摘要
桩土应力比与沉降是复合地基设计的2个重要参数,针对复合地基设计中难以考虑位移协调的情况,通过对地基基础共同作用方程进行简化,建立考虑桩土位移协调的设计分析方法,并结合广东地区3个不同类型刚性桩复合地基上建筑物在施工期间的沉降与桩土应力监测实例,得到桩土荷载分担以及沉降的变化规律。实测结果表明,所采用的地基承载力和沉降计算方法较好地反映了工程实际状况,比规范方法更加接近实际情况,研究成果可供今后类似工程设计参考。
The settlement and stress ratio between pile and soil are the two most important parameters of composite foundation.But it is not easy to consider displacement coordination between piles and ground.Aiming at this problem,the equation of interaction is simplified.And three different static loading tests and in-situ measurement are carried out to analyze the load-bearing behavior and working mechanism of various types of rigid pile composite foundations in Guangdong Province.The settlement and rule of stress ratio between pile and ground are obtained.The measurement results show that proposed method coincides well with the practice condition.This method has better practical result than that of the method presented in technical code.And the results presented could be used for reference in rigid pile composite foundation design.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2009年第A02期3850-3856,共7页
Chinese Journal of Rock Mechanics and Engineering
关键词
桩基工程
复合地基
桩土应力比
沉降
试验研究
pile foundations
composite foundation
stresses ratio of pile-soil
settlement
experimental research
