柔性荷载作用下的摩擦型桩复合地基沉降分析  

Settlement Analysis of the Composite Subgrade with Friction Pile under Flexible Load

作　　者：张威[1] 

机构地区：[1]安徽建筑工业学院,安徽合肥230022

出　　处：《安徽建筑》2008年第4期129-130,153,共3页Anhui Architecture

摘　　要：柔性基础或柔性荷载作用在复合地基上沉降计算与刚性基础有很大的不同,文章依据Alamgir等推荐的变形模型,在摩擦桩复合地基沉降计算方法方面进行了探讨,给出了柔性荷载下复合地基加固区压缩量计算的解析式。通过工程实例表明,复合模量法计算结果偏小,误差随着置换率和桩土模量比的提高而增大,而本文方法精度较之复合模量法要高。Setdement calculation of the flexible foundation or the composite subgrade with flexible load is very different from that of the rigid foundation, Based on the transmutative model recommended by Alamgir, this article approaches to the calculation methods of settlement in composite subgrade with friction pile and introduces the analytic solution to the settlement in flexible loading action on composite subgrade reinforced area. Engineering practice indicates that the result from subgrade moduhls method is lower than normal and error increases with the improvement of displacement rate and ratio of pile-soil modulus, And the accuracy with the method introduced in this article is higher than that with subgrade modulus method.

关 键 词：柔性荷载 复合地基 变形模型 沉降 

分 类 号：TU473.1[建筑科学—结构工程] TU433[建筑科学—土工工程]