瞬态瑞雷面波检测碎石桩复合地基承载力研究  

Studies on bearing capacity of gravel-piled compound foundation detected by transient Rayleigh surface waves

作　　者：贺会团[1] 张献民[2] 赵维炳[1] 

机构地区：[1]南京水利科学研究院岩土工程研究所,江苏南京210024 [2]中国民航学院交通工程学院,天津300300

出　　处：《岩土工程学报》2006年第8期1039-1043,共5页Chinese Journal of Geotechnical Engineering

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。The relation between deformation modulus and velocity of shear was discussed. The deformation modulus of gravel pile was also studied, then the regression model was obtained. Based on the modulus ratio model, a new method which used Rayleigh velocity to calculate the stress ratio of compound foundation was established. The influencing factor of the stress ratio was discussed too. By comparison with the dead-load test, the reliability of the new method was verified.

关 键 词：复合地基 应力比 剪切波速 瑞雷波 变形模量 

分 类 号：TU470[建筑科学—结构工程]