碎石桩复合地基承载力瞬态面波测试技术  

Transient surface wave test on bearing capacity of gravel pile compound foundation

作　　者：李少波[1] 莫欣 唐利田 何智龙 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]江苏省无锡惠山经济开发区管委会,江苏无锡214171 [3]上海海城建筑工程公司,上海200072 [4]浦东公路管理署,上海201200

出　　处：《铁路工程造价管理》2006年第4期1-6,共6页Railway Engineering Cost Management

基　　金：国家自然科学基金资助项目(60572164)

摘　　要：讨论了土的变形模量同剪切波速之间的关系,并对碎石桩的变形模量进行了研究,通过对现场试验数据分析得到了碎石桩变形模量回归模型。在桩土应力比模量比公式的基础上,通过建立瑞雷波和地基土压缩模量之间的关系,建立一种利用瑞雷波确定碎石桩复合地基桩土应力比计算模型,并对其影响因素进行了讨论。通过工程实例,将计算值同静载试验值进行对比,证明了其可靠性。In this article a discussion is held on the relationship between the modulus of soil deformation and the shear wave velocity with a study performed as well of the moduli of gravel pile deformation. From the analysis of field test data, a regression model is obtained of the moluli of the pile deformation. Based on the formula of soil stress ratio and modulus ratio of the pile, and through establishing the relation Raleigh wave, of which the influential elements are also discussed. By way of engineering instances, a comparison is conducted between the computed value and the static load test value to prove the test reliable.

关 键 词：复合地基 应力比 剪切波速 瑞雷波 变形模量 

分 类 号：TU472.35[建筑科学—结构工程]