碎石桩处理高液限土地基的离心试验研究  

Research on Simulating Settlement of Disposing Foundation of High Liquid Limit with Gravel Pile by Centrifugal Test

作　　者：吴国雄[1] 左杨[1] 廖俊棠[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2008年第6期1090-1094,共5页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：重庆市交通委员会科技项目(2006038)

摘　　要：高液限土是一种对工程有害的特殊土。为了处治高液限土地基,对室内土工离心模型试验进行分析,利用离心机产生离心力场,提高模型土体的体积力,形成人工重力。模拟高液限土地基在碎石桩处理后的固结性状,观测地基模型的变形和沉降。试验结果表明,碎石桩复合地基措施确实能改善地基的受力和变形性状,极大增强地基的稳定性。High liquid limit soil is a special kind of soil which is harmful to the engineering. In order to dispose the foundation of the high liquid limit soil, a centrifugal model test has been chosen, which uses the centrifugal power brought by centrifugal machine to improve the bulk power of the model and to form the man made gravity. The consolidation state of high liquid limit soil after the gravel pile is simulated, and meanwhile the deformation and subsidence of foundation model is observed. Through analysis of centrifugal model test, it is showed that the measure of gravel pile compound foundation improves stress and deformation behavior of foundation, and enhances the stability of foundation greatly.

关 键 词：高液限土 地基处治 土工离心模型试验 碎石桩 

分 类 号：U416.1[交通运输工程—道路与铁道工程] TU472.35[建筑科学—结构工程]