超长桩单桩竖向抗压静载荷检测中桩身压缩量的研究  

Study on Compression of Pile in Vertical Compressive Static Load Test of Single Pile of Overlength Pile

作　　者：胡清华[1] 殷亚斌 孙建东[1] 张耀镭[1] 

机构地区：[1]天津市勘察院,天津市300191

出　　处：《勘察科学技术》2016年第4期5-8,共4页Site Investigation Science and Technology

摘　　要：钻孔灌注桩在进行单桩竖向抗压静载荷检测时,桩顶沉降量随着桩顶竖向荷载的增大而增大。桩顶沉降量包括桩身压缩量和桩的沉降量。本文利用有限元数学计算模型,算出了不同桩径、不同桩型在桩顶荷载作用下的桩身沉降量,并结合工程实例,通过对理论计算数据和实际检测数据的对比分析,得出了桩身压缩量占桩顶沉降量的比例。In the vertical compressive static load test of single pile of cast- in- place pile,the settlement of pile top increases with the increasing of vertical load of pile top. The settlement of pile top includes the compression of pile and the settlement of pile. In this paper,the settlement of pile of different pile diameter and different pile type under the action of pile top load are calculated by using the finite element mathematical calculation model. Combined with the engineering examples,through the comparative analysis of theoretical calculating data and real testing data,the proportion of the compression of the pile to the settlement of pile top is obtained.

关 键 词：超长桩 有限元 桩身压缩量 

分 类 号：TU473.1[建筑科学—结构工程]