碎石桩处理液化地基效果评价

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英文篇名：Evaluation method for liquefaction discrimination of gravel columns composite ground 中文刊名：地震工程与工程振动 英文刊名：Earthquake Engineering and Engineering Vibration 作者：方磊 ; 许明军 英文作者：Fang Lei~(1) ; Xu Mingjun~(2)(1.Transportation College ; Southeast University ; Nanjing 210096 ; China ; 2.Jiangsu Provincial Planning andDesign Institute of Communication ; Nanjing 210005 ; China) 中文关键词：碎石桩 ; 砂土地基 ; 液化判别 英文关键词：gravel columns ; sand soil ; liquefaction discrimination 出版日期：2006-02-28 机构：东南大学交通学院,江苏省交通规划设计院 江苏南京210096,江苏南京210002 年：2006 期：01 出版单位：地震工程与工程振动

摘要

本文在考虑碎石桩排水和应力集中作用的基础上分析了碎石桩处理液化地基后复合地基的抗液化能力,并与自由场液化地基的抗液化能力进行了对比,提出了一种适用于碎石桩复合地基修正“Seed简化法”,可应用标准贯入试验对液化地基的处理效果进行评价。
In this article the potential for the liquefaction of gravel column composite foundation is evaluated by treating the soil as if it were sand field.Theory research indicates that the drainage and the stress concentration of gravel column have a substantial influence on the liquefaction resistance of sands.Modifications of the typical free-field liquefaction analysis procedure to account for existence in the drainage and the stress concentration of gravel column are suggested.At last,an example is calculated by the modification procedure,which indicates the potential for liquefaction damage is lesser in the gravel column foundation.

引文

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