Development of screening procedure for earthquake induced damage of embankment with considering effect of subsoil liquefaction

考虑地基土液化影响的路堤震害筛选程序开发

• 批准号: 22760362
• 负责人: NAKAJIMA Susumu
• 金额: $ 2.66万
• 依托单位: 公益財団法人鉄道総合技術研究所 (2011)Public Works Research Institute (2010)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22760362/
• 关键词: 地盤の挙動; 盛土; 液状化; 地震; スクリーニング; 液状化層厚; 基礎地盤

Earthquake induced damage of embankment could be divided into two patterns. One is the damage due to subsoil liquefaction and the other one is damage due to failure of embankment itself due to seismic inertia force. In this study, it is attempted to develop a screening procedure for former type of damages based on the results from dynamic centrifuge model tests and analyses of earthquake caused damage of embankment. It is found from the model test and analyses that the ratio of the thickness of liquefiable layer and not liquefiable layer could be effective indexes for the screening. As the end of this research, a screening procedure was proposed by using the ratio of the thickness of liquefiable layer to the not liquefiable layer, and settlement of embankment to the subsoil as the indexes.

地震引起的路堤破坏可分为两种类型。一种是地基土液化造成的破坏，另一种是地震惯性力作用下路堤本身破坏造成的破坏。在这项研究中，试图根据动态离心模型试验和地震引起的路堤损坏分析的结果，开发一种针对前一种损坏的筛选程序。模型试验分析发现，可液化层厚度与不可液化层厚度之比可作为筛选的有效指标。作为研究的最后，提出了以可液化层与不可液化层厚度之比、路堤对地基沉降量为指标的筛选程序。

项目成果

堤防の地震被害と基礎地盤条件の関係に関する分析

路堤震害与地基条件关系分析

• 发表时间: 2011
• 作者: 中田芳貫; ら
• 通讯作者: ら