Stucy of Liquefaction Protection of Ground Supporting Infrastractures

地面支撑基础设施液化防护研究

• 批准号: 06555138
• 负责人: MATSUO Minoru
• 金额: $ 0.7万
• 依托单位: NAGOYA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06555138/
• 关键词: Earthquake; Liquefaction; Embankment; Stability Analysis; Factor of Safety; Residual Deformation; 断層; 社会基盤施設; 破壊; 地震発生周期

This sutdy developed two methods to evaluate the stability of soil structures. One is a stability analysis which deals with the limit state of structures and the other is a dynamic deformation analysis to examine the residual deformation of structures against earthquakes. In stability analysis, a new safety concept is proposed against dynamic loads and shown to give rational factors of safety through some numerical examples. It could consider the effect of acceleration time history of earthquakes. On the other hand, in dynamic deformation analysis rigid perfectly plastic assumption is employed. It is exhibited to yield good solutions for large deformation problems. The effect of geometrically change of structures on the deformation is discussed. For liquefaction problems, an excess pore water model for earthquake is introduced after Carter et al.. The liquefaction process is well simulated with this method.

本文提出了两种评价土结构稳定性的方法。一个是稳定性分析，处理结构的极限状态，另一个是动态变形分析，检查结构对地震的残余变形。在稳定性分析中，提出了一种新的动力安全概念，并通过算例说明了该概念的合理性。它可以考虑地震加速度时程的影响。另一方面，在动力变形分析中，采用刚塑性假设。结果表明，该方法能很好地解决大变形问题。讨论了结构的几何变化对变形的影响。对于液化问题，在Carter等人的研究基础上，引入了一个地震时的过剩孔隙水模型。该方法能较好地模拟液化过程。

项目成果

大塚悟他2名: "動的荷重に対する土構造物の安定性評価とその考察" 第40回地盤工学シンポジウム論文集. 1. 265-270 (1995)

Satoru Otsuka 等人 2：“土结构对动荷载的稳定性评估及其考虑”第 40 届岩土工程研讨会论文集 1. 265-270 (1995)。

Ohtsuka,Satoru and Matsuo,Minoru: "Rigid Plastic Dynamic Deformation Analysis of Soil Structures" Proc.of International Conference on earthquake geotechnical Engineering,IS-Tokyo. 1147-1152 (1995)

Ohtsuka，Satoru 和 Matsuo，Minoru：“土壤结构的刚性塑性动态变形分析”，地震岩土工程国际会议论文集，IS-Tokyo。

山腰勝也,大塚悟,松尾稔: "土構造物の動的変形解析" 第29回土質工学研究発表会講演集. 3分冊の2. 1,037-1,040 (1994)

Katsuya Yamakoshi、Satoru Otsuka、Minoru Matsuo：“土结构的动态变形分析”第29届土壤工程研究会议论文集第3卷第2卷。1,037-1,040（1994年）。

Ohtsuak,Satoru and Matsuo,Minoru: "Residual deformation Assessment Against Dynamic Loading" Proc.of Asia-Pacific Conference on Shock and Impact Loads on Structures. 363-368 (1996)

Ohtsuak,Satoru 和 Matsuo,Minoru：“针对动态载荷的残余变形评估”亚太结构冲击和冲击载荷会议论文集。

Ohtsuka, S., Yamada, E.and Matsuo, M.: "Examination on evaluation of stability of soil structures against dynamic loads and its application to dynamic bearing capacity analysis" Proc.of Symposium on Dynamic Properties of Clays. 221-226 (1995)

Ohtsuka, S.、Yamada, E. 和 Matsuo, M.：“土结构抗动荷载稳定性评价及其在动承载力分析中的应用”Proc.of Symposium on Dynamic Properties of Clays。