Estimation of Ultimate Safety for Soil-structure Interaction System and its Application to Aseismic Design

土-结构相互作用系统极限安全估计及其在抗震设计中的应用

• 批准号: 01302039
• 负责人: TOKI Kenzo
• 金额: $ 3.07万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01302039/
• 关键词: Soil-structure interaction; Aseismic design; Foundation structures; Dynamic failure process; DEM; FEM; Substructure method; Hybrid experiment; 動的破壊規範; 最適配分; 地震観測; 耐震解析システム; 地盤-構造物系; 破壊現象; 有効入力; 入力地震動; 非線形復元力特性

We have proposed several analytical and experimental methods and theories in this project to develop earthquake resistant design which combines the elastic and ductile design methods of soil-structure interaction system. The following four topics has been investigated :(1) Evaluation of dynamic soil-structure interactionA computer program has been developed to analyze foundation structure systems by substructure method and FEM. We analyzed dynamic nonlinear behaviour of three dimensional soil-structure interaction system taking into account sliding and separation between soil and and structures as well as material nonlinearity.(2) Analysis of failure process of foundation structuresDynamic stability of granular structures and foundation structures were studied by use of experimental and analytical methods. A new experimental technique to visualize dynamic behaviour of particles interlocking in a model was developed. The efficiency of this technique was examined by Distinct Element Method (DEM). DEM was applied to the dynamic problem of bearing capacity of piles.(3) Experimental study of underground structures and foundation structuresNonlinear dynamic earth pressure acting horizontally on side walls of an underground conduit was investigated by the experiments and numerical simulation. A hybrid study has been done to measure and identify nonlinear restoring force characteristics of pile foundations. A simple analytical method to simulate the behavior of soil-pile systems has been developed.(4) Development of simplified model for soil-structure systemFor the purpose of a simple aseismic design of civil structure, the coupling system of soil-structure interaction was replaced to the simple sway-rocking (S-R) model. Simple estimation method of the vibration characteristics for the ground was developed by use of the spectrum ratio of microtremors.

本课题提出了几种分析和试验方法和理论，以发展土-结构相互作用体系弹性和延性设计方法相结合的抗震设计。（1）土-结构动力相互作用的计算本文编制了一个用子结构法和有限元法分析基础结构体系的计算程序。分析了三维土-结构相互作用体系的动力非线性特性，考虑了土与结构之间的滑移和分离以及材料非线性。(2)地基结构破坏过程分析采用试验和分析相结合的方法，对散体结构和地基结构的动力稳定性进行了研究。发展了一种新的可视化模型中颗粒联锁动态行为的实验技术。用离散元法（DEM）验证了该方法的有效性。将离散元法应用于桩基承载力的动力问题。(3)地下结构与基础结构的试验研究采用试验和数值模拟相结合的方法，研究了水平作用在地下管道侧壁上的非线性动土压力。采用混合方法研究了桩基非线性恢复力特性的测量与识别。本文提出了一种简单的分析方法来模拟桩-土系统的性状。(4)土-结构体系简化模型的建立为了简化土木结构的抗震设计，将土-结构相互作用的耦合体系简化为简单的摇摆-摇摆（S-R）模型。提出了利用地震动频谱比估算地基振动特性的简便方法。

项目成果

K TOKI,T SATO,J KIYONO,Nozar K G,S EMI,M YOSHIKAWA: "Hybrid Experiments on NonーLinear EarthquakeーInduced SoilーStructual Interaction" Earthquake Engneering and Strucyual Dynamics. 19. 709-723 (1990)

K TOKI、T SATO、J KIYONO、Nozar K G、S EMI、M YOSHIKAWA：“非线性地震引起的土壤-结构相互作用的混合实验”地震工程和结构动力学 19. 709-723 (1990)。

Toki,K.Sato,T.: "Seismic Behaviour of Pile Groups by Hybrid Experiments" Eartq.Eng.and Struc.Dyn.Vol.20. 895-909 (1991)

Toki,K.Sato,T.：“混合实验的桩群地震行为”Eartq.Eng.and Struc.Dyn.Vol.20。

Watanabe, H. et al.: "An Experimental Study on Dynamic Earth Pressure Acting on Side Walls on Underground Conduit" Proc. of JSCE. No. 432/I-16. 155-163 (1991)

Watanabe, H. 等人：“作用于地下管道侧壁的动态土压力的实验研究”Proc。

土岐 憲三・佐藤 忠信・清野 純史・吉川 正昭・Nozar KISHI G: "地盤ー抗基礎系の非線形動的相互作用に関するハイブリッド実験" 京都大学防災研究所年報. 第33号Bー2. 13-23 (1990)

Kenzo Toki、Tadanobu Sato、Junji Seino、Masaaki Yoshikawa、Nozar KISHI G：“土-阻力基础系统非线性动力相互作用的混合实验”京都大学防灾研究所年报第 33B-23 号。 ）

Sato, T. et al.: "Hybrid Experiments on Nonlinear Earthquake-Induced Soil-Structur Interaction" Proc. of 7th Int. Conf. on Computer methods and Advances in Geomech.881-886 (1991)

Sato, T. 等人：“非线性地震引起的土壤-结构相互作用的混合实验”Proc。