Fundamental Study on lateral Behavior of Piles in Slope during an Earthquake.

地震过程中边坡桩横向性能的基础研究。

• 批准号: 09650629
• 负责人: TOMINAGA Koji
• 金额: $ 1.66万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650629/
• 关键词: Slope; lateral Load; Pile Group Foundation; Model Test; Group Efficiency; Ultimate State; Analytical Program; 杭基礎; 地盤内応力; 地盤の進行性破壊; 杭体の全塑性曲げモーメント

The purpose of this study is to investigate the behavior of piles in slope up to failure under lateral load. The research results on the basis of both theoretical and experimental means can be summarized as follows.1.The lateral resistance of the given pile-soil system generally increases with increasing the plus angle of the slope on condition that the plus means the counterclockwise to the loading direction. The ultimate lateral resistance at the plus angle is greater than that at the minus, while the ultimate lateral displacement at the plus is less than that at the minus.2.The piles in the front row of the group carry greater lateral load than those in the back row, and the ratio of the difference increases with increasing the slope angle.3.The group efficiency is in a tendency that its value finally converges to the constant, increasing with the displacement, and also that its value at the plus angle is greater than that at the minus.4.Although the predictions by the analysis which has been developed by us agree to the test results under small loads, they somewhat diverge from the test results under larger loads.

本研究旨在探讨在侧向荷载作用下，斜坡中桩的性状直至破坏。通过理论分析和试验研究，得到以下结论：1.在加坡方向为逆时针方向的情况下，桩土体系的侧阻力一般随坡角的增大而增大。正倾角处的极限侧阻力大于负倾角处的极限侧阻力，而正倾角处的极限侧位移小于负倾角处的极限侧位移。2.群桩中前排桩的水平荷载大于后排桩的水平荷载。3.群效率有一个最终趋于常数的趋势，4.在小载荷下，本文的分析结果与试验结果吻合较好，但在较大载荷下，与试验结果有一定的偏差。

项目成果

SASAKI,Koryo: "Lateral Loading Tests of Model Pile Groups in Slope."Proceeding of AIJ Tyugoku Chapter Architectural Research Meeting,. 22. 33-36 (1999)

SASAKI，Koryo：“斜坡模型桩群的横向荷载试验”，AIJ Tyugoku 分会建筑研究会议论文集。

Xu,Ting: "Horizontal Loading Tests for Model Pile Group in Slope"Proceedings of 31st Japan National Conference on GE.. 1. 1457-1458 (1999)

徐婷：《边坡模型桩群水平荷载试验》第31届日本全国GE.. 1. 1457-1458会议论文集（1999）

佐々木網亮: "傾斜地盤中の群杭の水平加力模型実験" 日本建築学会中国支部研究報告書. 第22巻. 33-36 (1999)

佐佐木亮：《坡地群桩水平力模型试验》日本建筑学会中国分会研究报告第22卷33-36（1999）

佐々木綱亮: "傾斜地盤中の群杭の水平加力模型実験"日本建築学会中国支部研究報告書. 第22巻. 33-36 (1999)

佐佐木纲明：《坡地群桩水平力模型试验》日本建筑学会中国分会研究报告第22卷33-36（1999）

徐挺: "傾斜地盤中模型群杭の水平加力実験"第34回地盤工学会研究発表会. 第1巻. 1457-1458 (1999)

徐婷：《坡地模型群桩水平荷载试验》第34届岩土工程学会研究报告，第1卷，1457-1458（1999）。