研究者詳細 - 柴田　俊文

論文 - 柴田　俊文

分割表示 >> ／全件表示 115 件中 1 - 115 件目

Quantitative risk assessment for overtopping of earth-fill dams in Japan using machine learning algorithms 査読

Shiying Zheng, Shin-ichi Nishimura, Toshifumi Shibata, Yimeng Chen

International Journal of Disaster Risk Reduction 113 104892 - 104892 2024年10月

Inversion for soil property through data assimilation of Rayleigh wave 査読

Yuxiang REN, Shinichi NISHIMURA, Toshifumi SHIBATA, Takayuki SHUKU

Journal of JSCE 12 ( 2 ) 2024年

A novel data-driven 3D site characterization method: Tucker decomposition-Bayesian compressive sensing and benchmarking study 査読

M. Huang, T. Shuku, T. Shibata, S. Nishimura

ICVRAM-ISUMA 2024 2024年

A novel data-driven 3D site characterisation method: Tucker decomposition-Bayesian compressive sensing and benchmarking study 査読

M. Huang, T. Shuku, T. Shibata, S. Nishimura

Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards 2024年

Quantitative risk assessment for overflow of earth-fill dam by flooding using machine learning method 査読

S. Zheng, S. Nishimura, T. Shibata, T. Shuku

ICVRAM-ISUMA 2024 2024年

Identification of density of earth-fill dam using muography 査読

T. Shibata, K. Takahashi, S. Nishimura, T. Shuku

7th International Conference on Geotechnical and Geophysical Site Characterization 2024年

Identification of random field for ground stiffness by data assimilation based on surface wave method and sounding tests 査読

S. Nishimura, Y. Ren, T. Shibata, T. Shuku

7th International Conference on Geotechnical and Geophysical Site Characterization 2024年

Effect of Permeability Random Field on Piping Risk of a River Dike 査読

Shin-ichi NISHIMURA, Go KUBOTA, Ryota OHASHI, Toshifumi SHIBATA, Takayuki SHUKU

Geotechnical Special Publication (GSP), ASCE 347 2023年7月

RBSMによる塑性圧が作用する農業用水路トンネルの模型実験の解析査読

田本敏之, 柴田俊文, 西村伸一, 珠玖隆行

農業農村工学会論文集 317 I_239 - I_247 2023年

Risk evaluation for earth-fill dams due to heavy rains by response surface method 査読

S. Zheng, S. Nishimura, T. Shuku, T. Shibata, T. Tateishi

Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards 17 ( 3 ) 572 - 585 2023年

Evaluation for Earth-Fill Dams by Response Surface Method 査読

S. Zheng, S. Nishimura, T. Shibata

8th International Symposium for Geotechnical Safety & Risk 2022年12月

Evaluation of Deformation Behavior of a Natural Slope using Particle Filter 査読

T. Shibata, S. Nishimura, T. Shuku

8th International Symposium for Geotechnical Safety & Risk 2022年12月

Data assimilation for surface wave method by ensemble Kalman filter with random field modeling 査読

Y. Ren, S. Nishimura, T. Shibata, T. Shuku

International Journal for Numerical and Analytical Methods in Geomechanics 46 ( 15 ) 2944 - 2961 2022年

SEISMIC RESPONSE ANALYSIS OF EARTH DAMS WITH GEOSTATISTICAL METHOD AND 3-D SURVEY

Ryota OHASHI, Shin-ichi NISHIMURA, Minoru KANESHIGE, Toshifumi SHIBATA, Takayuki SHUKU

Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) 78 ( 2 ) 140 - 152 2022年

Using the Ensemble Data Assimilation for Stiffness Evaluation of an Embankment 査読

Y. Ren, S. Nishimura, T. Shibata, T. Shuku

Proceedings of the 8th International Symposium on Reliability Engineering and Risk Management 419 - 425 2022年

Application of Response Surface Method for Risk Evaluation of Earth-fill Dams 査読

S. Nishimura, T. Tateishi, T. Shibata, S. Kuroda, T. Kato, K. Kuribayashi, N. Tanaya

Proceedings of the 8th International Symposium on Reliability Engineering and Risk Management 413 - 418 2022年

Piping Risk Evaluation Considering Permeability Random Field 査読

R. Ohashi, G. Kubota, S. Nishimura, T. Shibata, T. Shuku

Proceedings of the 6th International Conference on Materials and Reliability 2022年

Seismic Response Analysis of Earth Dam with Geostatistical Method and 3-D Survey 査読

R. Ohashi, S. Nishimura, M, Kaneshige, T. Shibata, and T, Shuku

Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG 387 - 394 2022年

地質統計手法と三次元計測に基づくため池堤体の地震応答解析査読

大橋亮太, 西村伸一, 金重稔, 柴田俊文, 珠玖隆行

土木学会論文集C（地圏工学） 78 ( 2 ) 140 - 152 2022年

Reliability-based design for earth-fill dams against severe natural disaster events 査読

Shin-ichi Nishimura, Toshifumi Shibata, Takayuki Shuku

Soils and Foundations 61 ( 2 ) 271 - 282 2021年4月

Evaluation of spatial distribution for permeability based on CPTU and geostatistics 査読

S. Nishimura, G. Kubota, T. Shibata, T. Shuku

6th International Conference on Geotechnical and Geophysical Site Characterization ISC2020-237 2021年

Soil classification and correlation between Swedish weight sounding test results and strength parameter 査読

T.Shibata, S. Nishimura, T. Shuku, S. Futatsugi, A. Nishimura

6th International Conference on Geotechnical and Geophysical Site Characterization ISC2020-84 2021年

Case history of risk evaluation of earth-fill dams due to heavy rain 査読

T. Shibata, S. Nishimura, T. Tateishi, S. Kuroda, T. Kato, K. Kuribayashi, N. Tanaya

International Journal of Geoengineering Case Histories 6 ( 4 ) 85 - 100 2021年

Evaluation of liquefaction probability of earth-fill dam over next 50 years using geostatistical method based on CPTU 査読

K. Imaide, S. Nishimura, T. Shibata, T. Shuku

2021年

3次元計測を利用した効率的な3次元有限要素モデル化法の提案

金重稔, 西村伸一, 柴田俊文, 珠玖隆行

岡山大学環境理工学部研究報告 25 ( 1 ) 1 - 4 2020年3月

農業用水路トンネルの模型実験に対する個別要素法の適用性査読

柴田俊文, 田本敏之, 西村伸一, 珠玖隆行, 福元豊

農業農村工学会論文集 88 ( 1 ) I_105 - I_116 2020年

3次元計測に基づくため池堤体の有限要素モデル化と地震応答解析査読

金重稔, 西村伸一, 柴田俊文, 珠玖隆行

農業農村工学会論文集 89 ( 1 ) I_181 - I_189 2020年

Disaster report of 2018 July heavy rain for geo-structures and slopes in Okayama 査読

S. Nishimura, Y. Takeshita, S. Nishiyama, S. Suzuki, T. Shibata, T. Shuku, M. Komatsu, B. Kim

Soils and Foundations 60 ( 1 ) 300 - 314 2020年

Evaluation of liquefaction probability of earth-fill dam over next 50 years using geostatistical method based on CPT 査読

Kazunari Imaide, Shin-ichi Nishimura, Toshifumi Shibata, Takayuki Shuku, Akira Murakami, Kazunori Fujisawa

Soils and Foundations 59 ( 6 ) 1758 - 1771 2019年12月

逆解析を用いた地盤の長期挙動予測における観測期間と構成式の影響査読

柴田俊文, 西村伸一, 珠玖隆行

構造物の安全性および信頼性Vol.9（JCOSSAR2019）論文集 343 - 349 2019年10月

CPTU を利用した透水係数の空間分布推定査読

窪田郷, 西村伸一, 柴田俊文, 珠久隆行

構造物の安全性および信頼性Vol.9（JCOSSAR2019）論文集 516 - 522 2019年10月

Evaluation of strength distribution at cut slope of decomposed granite with the use of sounding method and geophysical exploration method 査読

Tatsuya Ueta, Shin-Ichi Nishimura, Kazunari Imaide, Toshifumi Shibata, Takayuki Shuku

Paddy and Water Environment 17 ( 2 ) 291 - 297 2019年4月

Prediction of long-term settlement and evaluation of pore water pressure using particle filter 査読

Toshifumi Shibata, Takayuki Shuku, Akira Murakami, Shin-ichi Nishimura, Kazunori Fujisawa, Noritaka Hasegawa, Satoshi Nonami

Soils and Foundations 59 ( 1 ) 67 - 83 2019年2月

地質統計手法に基づくため池堤体強度の空間分布評価査読

今出和成, 西村伸一, 柴田俊文, 珠玖隆行

農業農村工学会論文集 87 ( 1 ) II_29 - II_38 2019年

機械学習に基づく室内試験用メタンハイドレートサンプルの自動選択査読

珠玖隆行, 津田大成, 西村伸一, 柴田俊文

構造物の安全性および信頼性 JCOSSAR2019論文集 9 523 - 524 2019年

Surrogate models based on sparse estimation for geotechnical reliability analysis 査読

T. Shuku, M. Nishio, S. Nishimura, T. Shibata

Proc. of 16ARC 2019年

Evaluation of the spatial variability of cone penetration resistance inside an earth-fill dam composed of materials with different particle sizes with use of geostatistics 査読

K. Imaide, S. Nishimura, T. Shibata, T. Shuku

Proc. of 16ARC 2019年

Evaluation of expected damage costs for earth-fill breaches due to heavy rains by response surface method 査読

S. Nishimura, T. Shuku, T. Shibata

Proc. of 16ARC 2019年

Identification of spatial distribution of permeability in dikes by CPTs

Shin-Ichi Nishimura, Kazunari Imaide, Toshifumi Shibata, Takayuki Shuku

13th International Conference on Applications of Statistics and Probability in Civil Engineering, ICASP 2019 2019年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Seoul National University

In this study, the spatial variability of the strength and permeability inside and underneath a river dike are addressed. Cone penetration tests (CPTs) were conducted at the river dike site, which has piping histries. In addition, CPTs were conducted in the laboratory as model tests on soil sampled from the river dike site, and permeability tests were also conducted on the same samples. Based on the laboratory tests, the relationship between the CPT results, which include the tip resistance, the side friction, and the pore pressure, and the permeability is derived. The relationship is applied to the in-situ test results. In conclusion, the spatial variability of the strength and permeability of the test site is evaluated with a geostatistical simulation technique.

Scopus

researchmap

Estimation of strength parameters and soil classification based on Swedish weight sounding results

T. Kanamoto, T. Shibata, S. Nishimura, T. Shuku, S. Futatsugi, A. Nishimura

7th Korea-Japan Geotechnical Engineering Workshop 31 - 34 2018年

弾粘塑性FEMと観測データに基づいた斜面の変形挙動評価査読

二木重博, 西村伸一, 珠玖隆行, 柴田俊文

農業農村工学会論文集 86 ( 1 ) II_9 - II_18 2018年

CPT結果とせん断波速度の合成による地盤強度の空間分布に対する換算誤差の影響査読

植田起也, 西村伸一, 今出和成, 柴田俊文, 珠玖隆行

土木学会論文集A2（応用力学） 74 ( 2 ) I_95 - I_104 2018年

平成 30 年 7 月豪雨での広島県と岡山県のため池の被害査読

柴田俊文, 西村伸一

第61回地盤工学シンポジウム発表論文集 2018年

粒度の異なる材料が混合されたため池堤体におけるコーン貫入抵抗の空間分布評価査読

今出和成, 西村伸一, 柴田俊文, 珠玖隆行

土木学会論文集C（地圏工学） 74 ( 2 ) 213 - 224 2018年

応答曲面法による豪雨時のため池破堤に関する信頼性設計査読

西村伸一, 水間啓慈, 珠玖隆行, 柴田俊文

地盤工学会誌 66 ( 4 ) 8 - 11 2018年

EVALUATION OF THE SPATIAL VARIABILITY OF CONE PENETRATION RESISTANCE INSIDE AN EARTH-FILL DAM COMPOSED OF MATERIALS WITH DIFFERENT PARTICLE SIZE DISTRIBUTION 査読

Kazunari IMAIDE, Shin-ichi NISHIMURA, Toshifumi SHIBATA, Takayuki SHUKU

Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) 74 ( 2 ) 213 - 224 2018年

EFFECT OF TRANSFORMATION ERRORS ON SPATIAL VARIABILITY OF GROUND STRENGTH WITH SYNTHESIZED APPROACH OF CPT RESULTS AND SHEARWAVE VELOCITY 査読

Tatsuya UETA, Shin-ichi NISHIMURA, Kazunari IMAIDE, Toshifumi SHIBATA, Takayuki SHUKU

Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 74 ( 2 ) I_95 - I_104 2018年

CPTU を利用した河川堤防弱部と透水性空間分布の同定査読

西村伸一, 今出和成, 植田起也, 柴田俊文, 珠玖隆行

第61回地盤工学シンポジウム発表論文集 2018年

Spatial Distribution of Strength - Comparison between Indian and Japanese Embankments 査読

S. Nishimura, K. Imaide, T. Ueta, T. Hayashi, K. Inoue, T. Shibata, B. Chaudhary

Proc. of 3rd Indo-Japan Workshop on Geotechnics for Natural Disaster Mitigation and Management 2017年12月

アントコロニー最適化手法による土木施工の効率化査読

原田文仁, 珠玖隆行, 西村伸一, 柴田俊文

地盤と建設 35 ( 1 ) 213 - 217 2017年

Risk Evaluation of Earth Dam Breaches due to Heavy Rains with Use of Response Surface Method 査読

S. Nishimura, K. Mizuma, T. Shuku, T. Shibata

12th International Conference on Structural Safety and Reliability 2300 - 2308 2017年

Geostatistical Analysis for Identifying Weak Soil Layers in Dikes 査読

S. Nishimura, T. Shibata, T. Shuku, K. Imaide

GEO-RISK 2017: GEOTECHNICAL RISK ASSESSMENT AND MANAGEMENT GSP285 ( 285 ) 529 - 538 2017年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：AMER SOC CIVIL ENGINEERS

The spatial distribution of the strength inside river dikes is generally identified through sounding tests. In this research, the electric Cone Penetration Test (CPT) is employed, and spatially long- and short-interval tests are mixed to efficiently evaluate the piping risk to a dike. The Indicator Simulation (IS) method is used as the geostatistical method to simulate the N value distribution and to predict the weak area inside the dike. The synthesized approach of the CPT and the Surface Wave Method (SWM), which is one of the geophysical methods, is proposed to compensate for the shortcoming of each approach when conducting the IS. Consequently, the correlation structure inside the dike can be identified accurately, the high resolution of the spatial distribution of the N values can be visualized, and the piping risk to the dike can be discussed based on the results of the investigation.

Web of Science

researchmap

模型実験結果を利用した圧密逆解析手法の検証

柴田俊文, 西村伸一, 珠玖隆行

地盤工学会誌 65 ( 10 ) 22 - 25 2017年

Reliability-based design for earth-fills against severe natural hazard events 査読

S. Nishimura, T. Shibata, T. Shuku

Proc. of the 19th International Conference on Soil Mechanics and Geotechnical Engineering 3273 - 3276 2017年

Diagnosis of earth-fill dams by synthesised approach of sounding and surface wave method 査読

Shin-ichi Nishimura, Toshifumi Shibata, Takayuki Shuku

Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards 10 ( 4 ) 312 - 319 2016年10月

Prediction of Long-term Consolidation Behavior Considering Nonlinearity and Spatial Variability of Soil Parameters 査読

S. Nishimura, T. Shibata, T. Shuku

Proc.of the 6th Asian-Pacific Symposium on Structural Reliability and its Applications, APSSRA2016 630 - 635 2016年5月

Reliability-based design of earth-fill dams to mitigate damage due to severe earthquakes 査読

Shin-ichi Nishimura, Takayuki Shuku, Toshifumi Shibata

Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards 10 ( 1 ) 83 - 90 2016年1月

乾湿繰り返しによる底泥の物理化学特性の変化査読

西村伸一, 吉田舞子, 大久保賢治, 珠玖隆行, 柴田俊文

農業農村工学会論文集 84 ( 3 ) II_45 - II_50 2016年

Prediction of long-term settlement and accurate analysis of horizontal displacement based on model test results

T. Shibata, S. Nishimura, T. Shuku

6th KGS-JGS Geotechnical Engineering Workshop 115 - 118 2016年

Application of mechanoluminescent sensors to visual inspections for existing geotechnical structures 査読

R. Murakami, T. Shuku, T. Shibata, S. Nishimura

Geotechnics for Sustainable Development – Geotech Hanoi 2016 1193 - 1196 2016年

水平変位の高精度な予測を目的とした圧密問題の逆解析査読

柴田俊文, 西村伸一, 珠玖隆行

土木学会論文集A2（応用力学） 72 ( 2 ) I_97 - I_107 2016年

長期圧密予測解析パラメータ同定法の検証査読

西村伸一, 柴田俊文, 珠玖隆行

土木学会論文集A2（応用力学） 72 ( 2 ) I_35 - I_43 2016年

応答曲面法によるため池破堤リスクの簡易評価査読

水間啓慈, 西村伸一, 柴田俊文, 珠玖隆行

農業農村工学会論文集 301 ( 1 ) I_47 - I_55 2016年

記述言語：日本語出版者・発行元：公益社団法人農業農村工学会

ため池の破堤は下流域に大きな洪水を発生させ, 農業水利施設の中で最も甚大な被害を生じさせる事象の一つである．したがって, ため池破堤時の被害額を適切に推定することは, 土地改良事業のリスク評価やリスク管理に取り組む上で非常に重要な課題となっている．ため池破堤リスクの評価には, 氾濫解析を行った上で氾濫域の資産データを収集整理し被害額を推定する手法が一般的に用いられている．しかしながら, この手法は複雑であり, 作業に多くの時間や労力が必要となるため, 計画段階で実施する概略検討に適用することは困難である．このような背景から筆者らは, 複雑な解析を簡易な代替モデルで置き換える応答曲面法に着目し, ため池破堤による被害額を算定する応答曲面（Response Surface）を先に提案した．本研究では, 筆者らが提案した応答曲面を集中豪雨時におけるため池破堤のリスク評価に適用し, その実用性について検証することを目的とする．実在する4つのため池地区の応答曲面による被害額と既定の手法による被害額との差の値は, 応答曲面を作成した21ケースの不偏分散よりも小さい結果となり, 提案した手法は集中豪雨によるため池破堤リスクの簡易評価への活用が期待される結果が得られた．

DOI： 10.11408/jsidre.84.I_47

CiNii Article

CiNii Books

researchmap

その他リンク： https://jlc.jst.go.jp/DN/JLC/20020753571?from=CiNii

Numerical simulation of embankment failure due to overflow by Moving Particle Semi-implicit method 査読

T. Shuku, K. Fujisawa, S. Nishimura, T. Shibata

IDRE Journal 84 ( 1 ) I_31 - -I_38 2016年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人農業農村工学会

Recently, the evaluation of the failure potential of earth-filled dams has become important because of the increasing occurrence of storm rainfall. Although most instances of earth-filled dam failure are caused by overflow, in-depth knowledge of the mechanism of the erosion and failure process of embankments due to overflow is still lacking. This paper presents a numerical method for simulating an embankment erosion and failure process by the moving particle semi-implicit (MPS) method. To reasonably simulate the erosion and failure process of an embankment due to overflow, a simple erosion model whose parameters can be determined through erosion tests on embankment materials was newly incorporated into the original MPS method. An embankment erosion and failure process observed in a model test was simulated by the proposed MPS method to confirm its practicability. Although the simulation accuracy for the erosion rate is slightly low at the beginning of the erosion, the average simulated values of the erosion rate are almost the same as the experimental values. The proposed MPS method can be a useful tool in embankment design practices to simulate embankment erosion due to overflow and to discuss remedial measures against overflow.

DOI： 10.11408/jsidre.84.I_31

CiNii Article

CiNii Books

researchmap

その他リンク： https://jlc.jst.go.jp/DN/JLC/20020753557?from=CiNii

Sensitivity analysis of earth-filled dams based on experimental design 査読

T. Shuku, S. Nishimura, T. Shibata

IDRE Journal 83 ( 4 ) II_77 - II_82 2015年

Risk Evaluation of Earth-fills Due to Severe Earthquakes and Heavy Rains 査読

S. Nishimura, T. Shibata, T. Shuku, K. Mizuma

Proceedings of Symposium on Reliability of Engineering Systems 115 - 124 2015年

Diagnosis of Earth-Fill Dams by Several Sounding Tests 査読

Shin-ichi Nishimura, Toshifumi Shibata, Takayuki Shuku

GEOTECHNICAL SAFETY AND RISK V 334 - 339 2015年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：IOS PRESS

The spatial distribution of the strength inside an earth-fill dam is identified by sounding tests. In this research, the Swedish Weight Sounding (SWS) test is employed, and the spatially high-density test is possible to identify the spatial correlation structure by the SWS. The correlation structure of an earth-fill could be identified accurately based on the sounding results, and the high resolution of the spatial distribution could be visualized by using the indicator simulation. Consequently, it has been verified the practical use of the spatial distribution of the probability that the N-value is lower than the threshold value, may be used for the maintenance of an earth-fill dam.

DOI： 10.3233/978-1-61499-580-7-334

Web of Science

researchmap

Reliability-based design for earth-fill dams against heavy rains 査読

Shin-Ichi Nishimura, Takayuki Shuku, Toshifumi Shibata, Kazunori Fujisawa

15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015: New Innovations and Sustainability 2 ( 71 ) 2440 - 2444 2015年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：Asian Regional Conference on Soil Mechanics and Geotechnical Engineering

To mitigate the disasters of decrepit earth-fill dams, improvement work is conducted. Since there is a recent demand for low-cost improvements, the development of a design method for optimum improvement work at a low cost is the final objective of this research. The reliability-based design approach is discussed as such a design method. Heavy rains are the most serious events for aged fill-dams, and sometimes overflows leading to breaching occur. From the estimated probability of overflow, the probability of submergence in the downstream is estimated for the reliability-based design. The remarkable point in this paper is that the probability of occurrences of heavy rains and the uncertainty of the soil properties are simultaneously considered for the design. Considering the disaster loss, the risk of submergence could be assessed.

DOI： 10.3208/jgssp.JPN-044

Scopus

researchmap

An eco-friendly design method for geotechnical structures based on LCC 査読

T. Shuku, S. Nishimura, Y. Shimokado, T. Shibata

LIFE-CYCLE OF STRUCTURAL SYSTEMS: DESIGN, ASSESSMENT, MAINTENANCE AND MANAGEMENT 1398 - 1404 2015年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：CRC PRESS-TAYLOR & FRANCIS GROUP

This study presents an eco-friendly design method for infrastructures based on contingent valuation method (CVM). First, a questionnaire survey based on the CVM was conducted to estimate monetary values of stream habitat which can be damaged by river improvement works such as flood prevention works. Second, a design method which can quantitatively evaluate impacts on stream habitat due to flood prevention works was proposed by combining computation of non-uniform flow with a method of stream habitat estimation called physical habitat simulation model (PHABSIM). Finally, monetary value of environmental loss due to flood prevention works was estimated by using results of CVM, and the effectiveness of the eco-friendly design method was discussed through a numerical example.

Web of Science

researchmap

Diagnosis of earth-fill dams by synthesized approach of sounding and surface wave method 査読

S. Nishimura, T. Shibata, T. Shuku

Proceedings of the 12th International Conference on Applications of Statistics and Probability in Civil Engineering 64 - 70 2015年

豪雨時の越流破堤に対するため池堤体の信頼性設計

西村伸一, 珠玖隆行, 柴田俊文, 藤澤和謙

地盤工学会誌 63 ( 5 ) 30 - 31 2015年

ため池破堤による想定リスクの簡易評価手法査読

水間啓慈, 西村伸一, 柴田俊文, 珠玖隆行

構造物の安全性および信頼性Vol.8（JCOSSAR2015）論文集 475 - 481 2015年

応答曲面法によるため池破堤時の被害額の簡易推定査読

水間啓慈, 西村伸一, 柴田俊文, 珠玖隆行

農業農村工学会論文集 299 ( 5 ) I_147 - I_153 2015年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：The Japanese Society of Irrigation, Drainage and Rural Engineering

我が国には江戸期以前に築造されたものも含め農業用ため池が数多く存在し, 地震や豪雨のリスクに常に直面している．このため, 遅滞なく効率的に改修等のハード対策や管理体制の強化等のソフト対策を講ずる必要があり, 破堤時の想定被害額を考慮しながら優先順位を決定し計画的に対応を図ることが求められている．しかしながら, 既定の氾濫解析に基づく被害額算定手法は複雑であり, 優先度を検討する数多くのため池の被害額を一度に算定することは難しいことから, 容易に被害額を推定できる簡略化された手法が必要となる．本研究では, このような課題に対応するため, 応答曲面法を用いて被害額を簡易に推定する手法を提案する．応答曲面法とは, 実験計画法に基づく回帰分析により, 因子と応答との定量的な関係を表現する回帰式を作成する手法であり, 得られた回帰式は応答曲面と呼ばれる．被害額算定に考慮すべき多くの因子について感度解析を行い, 被害額の値に大きく寄与する4つの因子を抽出した．これらの因子を用いて作成した応答曲面の決定係数R²は0.84と高く, 行政機関等が行う被害額の簡易推定への実用の可能性が示唆される結果が得られた．

DOI： 10.11408/jsidre.83.I_147

CiNii Article

CiNii Books

researchmap

その他リンク： https://jlc.jst.go.jp/DN/JLC/20015919326?from=CiNii

ため池破堤による想定被害額の簡易な比較手法査読

水間啓慈, 西村伸一, 柴田俊文, 珠玖隆行

農業農村工学会論文集 295 ( 1 ) 39 - 46 2015年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人農業農村工学会

地震や集中豪雨による農業用ため池の決壊は，下流域に大きな洪水を発生させ，農業水利施設の中で最も甚大な被害を生じさせる事象の一つである．このため，土地改良施設のリスクを評価しその機能を保全しようとする際に，ため池が決壊した場合の被害額を事前に想定することは非常に重要となる．一方，国が定める被害額算定手法は複雑であり，様々な資産データの収集・整理に多大な労力や時間を必要とする．そこで本研究では，ため池が決壊した場合の氾濫域における被害額を算定する簡易な手法を提案する．提案する手法は，対策を講ずる地区の選定時等に実際に適用できるよう容易に入手可能な資産データのみを用いることとした．3池の氾濫解析結果に提案する手法を適用し被害額を算定した．その結果，規定の方法と大差無く被害額を算定できたことから，提案する手法は有用との結論が得られた．

DOI： 10.11408/jsidre.83.39

CiNii Article

CiNii Books

researchmap

その他リンク： https://jlc.jst.go.jp/DN/JLC/20021009394?from=CiNii

Evaluation of Strength of Soft Ground Improved by Vacuum Consolidation 査読

T. Shibata, S. Nishimura, M. Fujii, A. Murakami

Geotechnical Engineering Journal of the SEAGS & AGSSEA 46 ( 1 ) 95 - 102 2015年

Prediction of the ground and dyke behavior with vacuum consolidation 査読

T. Shibata, A. Murakami, M. Fujii

Computer Methods and Recent Advances in Geomechanics 1223 - 1228 2015年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：CRC PRESS-TAYLOR & FRANCIS GROUP

The present paper addresses the prediction of the behavior of a ground and a reservoir dyke with a retaining wall at the site of a regulating reservoir whose soft soil foundation is improved by using both the usual em-bankment preloading and vacuum consolidation. To evaluate the settlement, a numerical analysis using an elasto-plastic FEM for soil-water coupled problems, incorporating the SYS Cam-clay model, is carried out, and an inverse analysis approach is adopted. The particle filter is used to identify the geomechanical parame-ters based on the measured settlement. A prediction of the surface deformation and the displacements at the crown of the precast retaining wall is performed using the identified parameters.

Web of Science

researchmap

地震と豪雨によるため池のリスク評価査読

西村伸一, 古宅瑞穂, 柴田俊文, 珠玖隆行, 水間啓慈

構造物の安全性および信頼性Vol.8（JCOSSAR2015）論文集 482 - 487 2015年

ため池の地震時リスク評価査読

西村伸一, 柴田俊文, 珠玖隆行, 水間啓慈

水土の知 83 ( 12 ) 1027 - 1030 2015年

地質統計学手法によるアースダム堤体におけるCPT先端抵抗分布の推定査読

今出和成, 西村伸一, 珠玖隆行, 柴田俊文, 村上章, 藤澤和謙

構造物の安全性および信頼性Vol.8（JCOSSAR2015）論文集 622 - 629 2015年

一次元圧密の逆解析査読

珠玖隆行, 西村伸一, 柴田俊文

構造物の安全性および信頼性Vol.8（JCOSSAR2015）論文集 454 - 458 2015年

鋼橋梁の腐食減耗量とLCC算定方法の提案査読

石故有生也, 柴田俊文, 大屋誠, 武邊勝道, 広瀬望

構造物の安全性および信頼性Vol.8（JCOSSAR2015）論文集 615 - 621 2015年

神戸空港島の地盤沈下予測に対する粒子フィルタの適用査読

柴田俊文, 珠玖隆行, 村上章, 西村伸一

構造物の安全性および信頼性Vol.8（JCOSSAR2015）論文集 459 - 465 2015年

Sensitivity analysis of slope stability based on orthogonal designs 査読

T. Shuku, S. Nishimura, T. Shibata

Computer Methods and Recent Advances in Geomechanics 1043 - 1048 2015年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：CRC PRESS-TAYLOR & FRANCIS GROUP

This study has investigated sensitivity of input parameters in stability analysis of earthen embankments to its factor of safety (F-s) using an experimental design approach. Computer experiments based on orthogonal designs were carried out to achieve efficient experiments, and a linear regression model was applied to analyze the results of the experiment. The Standardized Regression Coefficients (SRCs) obtained from the regression analysis was employed as indexes of the sensitivity of the input parameters to the F-s. The results of the sensitivity analysis showed that the parameters about the geometry of embankments such as height and slope gradient are more sensitive to F-s, although the parameters about hydraulic characteristics of embankment materials are less sensitive to the F-s. In addition, interaction effects between input parameters were also analyzed, and its sensitivity to F-s was discussed.

Web of Science

researchmap

Reliability-based design of earth-fill dams regarding heavy rains and earthquakes 査読

S. Nishimura, T. Shuku, T. Shibata, K. Fujisawa

LIFE-CYCLE OF STRUCTURAL SYSTEMS: DESIGN, ASSESSMENT, MAINTENANCE AND MANAGEMENT 1390 - 1397 2015年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：CRC PRESS-TAYLOR & FRANCIS GROUP

This research deals with a strategy for the maintenance of geotechnical structures such as earth fill dams. Standard penetration test (SPT) N-values are frequently used to determine the soil parameters. Firstly, based on the statistical model for the N-values, the shear strength parameters are derived through the empirical relationships. Secondly, a reliability analysis of the embankments is conducted considering the variability of the internal friction angle and the seismic hazard. Thirdly, the probability of overflow of earth fills during heavy rains is evaluated. The rainfall intensity is dealt with as a probabilistic parameter, and the various rainfall patterns are tested by the Monte Carlo method.

Web of Science

researchmap

Reliability-based design of earth-fill dams to mitigate damage due to severe earthquakes 査読

S. Nishimura, T. Shuku, T. Shibata

Computer Methods and Recent Advances in Geomechanics 1289 - 1294 2015年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：CRC PRESS-TAYLOR & FRANCIS GROUP

This research deals with a strategy for the maintenance of geotechnical structures such as earth-fill dams. Standard PenetrationTest (SPT) N-values are frequently used to determine the soil parameters. Firstly, a statistical model for the N-values is determined from sounding test results. In this research, however, Swedish Weight Sounding (SWS) tests are employed as they are simpler than SPT. Secondly, an indicator simulation is conducted to interpolate the spatial distribution of the N-values, and the results are utilized to find degraded areas inside the embankments and to maintain the embankments. Based on the statistical model for the N-values, the shear strength parameters are derived through the empirical relationships. Then, a reliability analysis of the embankments is conducted considering the variability of the internal friction angle and the seismic hazard.

Web of Science

researchmap

Prediction of embankment behavior of regulating reservoir with foundation improved by vacuum consolidation method 査読

Toshifumi Shibata, Akira Murakami, Makoto Fujii

SOILS AND FOUNDATIONS 54 ( 5 ) 938 - 954 2014年10月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：JAPANESE GEOTECHNICAL SOC

The present paper addresses the numerical prediction of the behavior of a ground and a reservoir dyke with a retaining wall at the site of a regulating reservoir whose soft soil foundation is improved by using both the usual embankment preloading and vacuum consolidation. To evaluate the settlement, the lateral deformation, and the dissipation of pore pressure during Vacuum preloading, a numerical analysis using an elasto-plastic FEM for soil water coupled problems, incorporating the SYS Cam-clay model, is carried out in two dimensions. However, a change in the soil parameters during the vacuum preloading leads to a less accurate computation. To account for the uncertainties in the input parameters of the constitutive model for the improved ground, an inverse analysis approach is adopted. The particle filter is used to identify the compression index of the clay layers and the coefficient of permeability of the organic soil layer based on the measured settlement at the bottom of the preloading embankment during the vacuum consolidation. The reservoir dyke with a retaining wall is constructed on an improved foundation after removing the preloading embankment, and an attempt is made to predict its performance after construction by an elasto-plastic FEM for soil water coupled problems using the identified parameters. (C) 2014 The Japanese Geotechnical Society. Production and hosting by Elsevier B.V. All rights reserved.

DOI： 10.1016/j.sandf.2014.09.008

Web of Science

researchmap

Numerical simulation of dyke breach process using MPS method 査読

T. Shuku, S. Hirayama, S. Nishimura, T. Shibata

Proceedings of the 24th International Ocean and Polar Engineering Conference 693 - 696 2014年

粒子群最適化法による最小安全率の探索査読

工藤賢司, 珠玖隆行, 西村伸一, 柴田俊文

32 ( 1 ) 61 - 68 2014年

Reliability-based design of earth-fill dams considering probability of heavy rains and uncertainty of soil properties 査読

S. Nishimura, H. Nagao, K. Fujisawa, T. Shuku, T. Shibata

Proceedings of 1st International Conference on Computational Engineering and Science for Safety and Environmental Problems 160 - 163 2014年

Reliability-Based Design of Earth-Fill Dams to Mitigate Damage Due to Severe Earthquakes 査読

S. Nishimura, T. Shuku, T. Shibata

Vulnerability, Uncertainty, and Risk: Quantification, Mitigation, and Management - Proceedings of the 2nd International Conference on Vulnerability and Risk Analysis and Management, ICVRAM 2014 and the 6th International Symposium on Uncertainty Modeling and Analysis, ISUMA 2014 2350 - 2359 2014年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：American Society of Civil Engineers (ASCE)

This research deals with a strategy for the maintenance of geotechnical structures such as earth-fill dams. Standard penetration test (SPT) N-values are frequently used to determine the soil parameters. Firstly, a statistical model for the N-values is determined from sounding test results. In this research, however, Swedish weight sounding (SWS) tests are employed as they are simpler than SPT. Secondly, an indicator simulation is conducted to interpolate the spatial distribution of the N-values, and the results are utilized to find degraded areas inside the embankments and to maintain the embankments. Based on the statistical model for the N-values, the shear strength parameters are derived through the empirical relationships. Then, a reliability analysis of the embankments is conducted considering the variability of the internal friction angle and the seismic hazard.

DOI： 10.1061/9780784413609.236

Scopus

researchmap

An eco-friendly design method for infrastructures based on CVM 査読

Y. Shimokado, T. Shuku, S. Nishimura, T. Shibata

Proceedings of the 24th International Ocean and Polar Engineering Conference 754 - 759 2014年

Observational Design Method for Earth Structures using Particle Filter 査読

Takayuki Shuku, Shin-Ichi Nishimura, Toshifumi Shibata

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：American Society of Civil Engineers (ASCE)

This study presents a reliability-based design method for geotechnical structures based on the observational method, which can be used as a methodology for the performance verification of geotechnical structures. In the proposed method, the soil-water coupled finite element analysis is utilized as a performance-verification method, and stochastic uncertainties inherent in the geotechnical parameters are evaluated by a Monte Carlo simulation. The proposed method can select the optimum design/construction method from several design alternatives, from the viewpoint of Life Cycle Cost, and the predictions at the initial design stage are sequentially updated by the particle filter. The proposed method is applied to a numerical example of the construction problem of embankment specified quantitative performance criteria, such as allowable settlements and the probability of their exceedance, and the feasibility of the method is examined in this example.

DOI： 10.1061/9780784413609.246

Scopus

researchmap

Parameter identification of elasto-plastic constitutive models using ensemble-based filter

T. Shuku, S. Nishimura, T. Shibata

5th KGS-JGS Geotechnical Engineering Workshop 69 - 80 2013年

Numerical simulation of embankment failure due to overflow using particle method

S. Hirayama, T. Shuku, S. Nishimura, K. Fujisawa, T. Shibata

5th KGS-JGS Geotechnical Engineering Workshop 27 - 36 2013年

Centrifuge evaluation of data assimilation for deformation behavior of clay foundation 査読

T. Shuku, S. Nishimura, T. Shibata

The 1st International Conference on Civil and Building Engineering Informatics 225 - 233 2013年

模型実験結果に基づく長期沈下予測法の検証査読

西村伸一, 珠玖隆行, 山田典弘, 柴田俊文

土木学会論文集A2（応用力学） 69 ( 2 ) I_29 - I_38 2013年

MPS法によるニューマチックケーソン施工時の地盤変形解析査読

珠玖隆行, 西村伸一, 川﨑元, 尾形恒夫, 柴田俊文

地盤と建設 31 ( 1 ) 37 - 46 2013年

A stabilization procedure for soil-water coupled problems using the element-free Galerkin method 査読

T. Shibata, A. Murakami

COMPUTERS AND GEOTECHNICS 38 ( 5 ) 585 - 597 2011年7月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCI LTD

The development of stability problems related to classical mixed methods has recently been observed. In this study, a soil-water coupled boundary-value problem, one type of stability problem, is presented using the element-free Galerkin method (EFG method). In this soil-water coupled problem, anomalous behavior appears in the pressure field unless a stabilization technique is used. The remedy to such numerical instability has generally been to adopt a higher interpolation order for the displacements than for the pore pressure. As an alternative, however, an added stabilization term is incorporated into the equilibrium equation. The advantages of this stabilization procedure are as follows: (1) The interpolation order for the pore pressure is the same as that for the displacements. Therefore, the interpolation functions in the pore pressure field do not reduce the accuracy of the numerical results. (2) The stabilization term consists of first derivatives. The first derivatives of the interpolation functions for the EFG Method are smooth, and therefore, the solutions for pore pressure are accurate. In order to validate the above stabilization technique, some numerical results are given. It can be seen from the results that a good convergence is obtained with this stabilization term. (C) 2011 Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.compgeo.2011.02.016

Web of Science

researchmap

Characteristics of Free Surface Oscillations in Open Channel Flows with a Side-cavity 査読

I. Kimura, S. Mino, T. Hosoda, Y. Shimizu, T. Shibata

International Conference on Water and Flood Management 2009 1 177 - 184 2009年

Estimation of horizontal subgrade reaction coefficient by inverse analysis 査読

N. Kobayashi, T. Shibata, Y. Kikuchi, A. Murakami

COMPUTERS AND GEOTECHNICS 35 ( 4 ) 616 - 626 2008年7月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCI LTD

The subgrade reaction coefficient of a foundation soil in an open pier has been identified using an extended Kalman filter (EKF) based on measurements taken during in situ horizontal loading tests on a pile. For the in situ tests, the surface clay layer was removed, and the diluvial clay layer was replaced by a rubble mound to reduce the length of the pile above the surface of the foundation deposit. The tests were carried out for both the existing diluvial clay deposit and the replacement rubble mound for purposes of comparing the identified subgrade reaction coefficients in Euler-Bernoulli's beam equation with nonlinear springs. The measured deflection and the bending moment determined in the tests were used as input data for the inverse analysis. Analysis revealed that the identified subgrade reaction coefficient of the rubble mound is less than that of the diluvial clay under the same level of loading. The numerical results will provide useful information for the future design of open piers and their foundations. (C) 2007 Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.compgeo.2007.11.002

Web of Science

researchmap

A Stabilization Procedure for Soil-water Coupled Problems Using the Mesh-free Method 査読

T. Shibata, A. Murakami

12th IACMAG 64 - 70 2008年

Inverse analysis for nonlinear problem by Unscented Kalman filter 査読

A. Murakami, S. Kasamatsu, S. Nishimura, T. Shibata, R. Takata

4th international conference on advances in Structural Engineering and Mechanics 1134 - 1141 2008年

Stabilizing mesh-free method for soil-water coupled problems 査読

T. Shibata, A. Murakami

International Society for Soil Mechanics and Geotechnical Engineering 13th Asian Regional Conference 12 ( 2 ) 1089 - 1092 2007年

A Stabilization Procedure for Soil-water Coupled Problems Using the Element-Free Galerkin Method 査読

T. Shibata, A. Murakami

7th World Congress on Computational Mechanics 1472 2006年

局所変形を考慮に入れた平板に作用する衝撃力の近似計算法の適用性査読

柴田俊文, 三上隆, 須藤敦史, 蟹江俊仁

応用力学論文集 7 ( 1 ) 39 - 45 2004年

衝撃力作用時における梁の減衰定数と剛性の同時同定査読

柴田俊文, 三上隆, 須藤敦史, 蟹江俊仁, 上田務

構造工学論文集 49A 1253 - 1258 2003年

Simultaneous Identification of Damping Factor and Stiffness on Beams under Impact Loading 査読

T. Shibata, T. Mikami, A. Sutoh

Proceedings of the 5th Asia-Pacific Conference on Shock & Impact Loads on Structures 347 - 352 2003年

カルマンフィルタによる梁の衝撃力の同定査読

柴田俊文, 三上隆, 須藤敦史, 蟹江俊仁

構造工学論文集 48A 1485 - 1491 2002年

梁に作用する衝撃力に関する研究

柴田俊文

北海道大学 2001年

剛球の梁への衝突における衝撃力の近似計算法査読

柴田俊文, 三上隆, 佐藤昌志, 須藤敦史

土木学会論文集 647 ( I-51 ) 167 - 176 2000年

An approximate method for estimating impact force on beams considering local deformation 査読

T. Shibata, T. Mikami, A. Sutoh

The 7th East Asia-Pacific Conference on Structural Engineering and Construction 267 - 272 1999年

梁に作用する非定常な衝撃荷重の同定査読

柴田俊文, 須藤敦史, 三上隆

応用力学論文集 1 ( 1 ) 91 - 98 1998年

An identification of impact load acting on beams by extended Kalman filter 査読

T. Shibata, T. Mikami, A. Sutoh, N. Nirasawa

The 6th East Asia-Pacific Conference on Structural Engineering and Construction 3 2213 - 2218 1998年

局所変形の影響を考慮した梁の衝撃力の一計算法査読

柴田俊文, 三上隆, 佐藤昌志, 須藤敦史, 韮澤憲吉

構造工学論文集 44A 1753 - 1759 1998年

Impact analysis of beams considering local deformation 査読

T. Mikami, T. Shibata, N. Nirasawa, A. Sutoh

2nd Asia-Pacific Conference on Shock & Impact Loads on Structures 363 - 368 1997年

　前のページ - 次のページ　

<柴田 俊文>

論文 - 柴田 俊文

<柴田　俊文>

論文 - 柴田　俊文