摘要
在载荷试验条件下，水泥土单桩与复合地基下的单桩及钢筋混凝土单桩应力传递，桩周应力分配，桩土相互作用形式及形成桩顶沉降的原因，均有很大差异。本文通过分析这些差异产生的原因，结合现场试验资料，对单桩荷载试验与复合地基试验条件下单桩进行了对比，表明不同试验方法对质量检测与评价的影响。同时，结合现场单桩载荷试验资料，说明水泥土桩单桩载荷试验的Ｐ－Ｓ曲线近似为一条双曲线，通过对双曲线的特征分析。
Under the load testing conditions, the transfer and distribution of stress, the interaction format with soil and the causes of settlement are quite different among cement soil piles, composite piles and concrete piles. Combined with testing records, the causes of the difference are analyzed. By comparing the load testing conditions, influence of different testing methods on quality inspection and their appraisal is demonstrated. According to the records, P-S curve of cement soil pile test can be approximately considered as a hyperbola, from which a method of determining the load bearing capacity can be concluded.
出处
《施工技术》
CAS
北大核心
1999年第9期28-29,共2页
Construction Technology
关键词
水泥土搅拌桩
应力
变形
单桩承载力
Cement soil pile
Stress
Deformation
Failure features
Load bearing capacity
