碎石桩复合地基的研究进展与分析  

ADVANCE IN RESEARCHES OF THE STONE COLUMN COMPOSITE FOUNDATION AND ITS ANALYSIS

作　　者：张艳美[1] 张鸿儒[1] 张旭东[2] 

机构地区：[1]北京交通大学土建学院隧道中心,北京100044 [2]石油大学(华东),东营257061

出　　处：《工程地质学报》2005年第1期100-106,共7页Journal of Engineering Geology

基　　金：国家自然科学基金资助项目(G50278003);铁道部科技研究开发项目资助(2003G06).

摘　　要：从碎石桩复合地基的抗液化机理、抗液化性能判别方法、动力分析方法等方面入手,对国内外研究现状做了简要介 绍和分析。结果表明,过去的研究主要集中在碎石桩的加密效应和排水效应方面。对水平剪应力分担情况的研究相对较少 碎石桩复合地基抗液化效果判别方法的研究还有待深入。目前,动力分析方法基本上以粘弹性理论为基础,应加强弹塑性及 粘弹塑性有效应力动力分析方面的研究。In this paper, the authors first review advances in research of anti-liquefaction mechanism, assessment methods for anti-liquefaction and dynamic analysis of stone column composite foundation. Past research focuses on the drainage effectiveness and densification effectiveness of stone columns. However, not enough attention has been paid to the horizontal shear stress introduced by stone columns in previous studies. The assessment method for anti-liquefaction of the stone column composite foundation should also be further emphasized. Dynamic analysis is still based on the visco-elastic theory. Therefore, elastic-plastic and visco-elastic-plastic effective stress dynamic analyses should be enhanced.

关 键 词：碎石桩复合地基 动力分析 抗液化性能 有效应力 粘弹塑性 剪应力 液化机理 粘弹性理论 判别方法 排水 

分 类 号：P642.131[天文地球—工程地质学] TU473[天文地球—地质矿产勘探]