CFG桩湿陷性黄土地基物理力学性质研究  

Research on the Physical and Mechanical Properties of CFG Pile with Collapsibility Processing

作　　者：刘昭[1] 王吉庆[1] 平沙沙[2] 宋勇军[1,3] 

机构地区：[1]长安大学公路学院,西安710061 [2]西安交通大学理学院 [3]西京学院工程技术系

出　　处：《四川理工学院学报（自然科学版）》2012年第1期86-89,共4页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

摘　　要：目前高速铁路在基础设计方面存在两种主流方法,填方路基和桥墩路基。分析两种方式的利弊,阐述了经济效益好的填方路基处理前后其基本物理力学指标:密度、含水量、液限、塑限、粘聚力以及内摩擦角等的响应情况。讨论分析了湿陷性因素及经过CFG桩等处理后沉降的变化情况,阐明了基本物理力学指标之间的关系及湿陷性的影响因素和沉降的控制情况,为后期的研究提供本质的理论依据。At present, the foundation design of the high speed rail mainly exits two kinds of methods： filling subgrade construction and bridge pier roadbed. The advantages and disadvantages of the two ways are analyzed. The basic physical mechanics index of the filling subgrade construction with good economic performance before and after processing is expounded, which includes density, water content, liquid limit, plastic limit, internal cohesion, the response of internal friction angle. The coefficient of collapsibility and the sedimentation changes after CFG pile settlement are analyzed. The relationship between the basic the physical and mechanical indexes, the influence factors of the collapsibility and control of settlement are illustrated, which provides the theory basis for the Late-stage research.

关 键 词：高速铁路 CFG桩 湿陷性 

分 类 号：TU47[建筑科学—结构工程]