湿陷性黄土地区振动沉管灌注桩单桩承载力数值模拟  

Numerical simulation of bearing capacity of single pile of vibro sinking cast-in-place pile in collapsible loess area

作　　者：马岷成 王文博 杨彦霞 郑文博 樊娟 郑亚林 

机构地区：[1]甘肃省建设设计咨询集团有限公司,甘肃兰州730050 [2]兰州理工大学甘肃省土木工程防灾减灾重点实验室,甘肃兰州730050

出　　处：《中国建材科技》2020年第6期148-150,39,共4页China Building Materials Science & Technology

基　　金：甘肃省住房和城乡建设厅科研项目(JK2020-37)。

摘　　要：大直径振动沉管灌注桩在建筑场地的应用较为广泛,桩承台基础的设计及施工工艺也较成熟。本文基于天水客机改货机项目,依托工程完成原位试验,采集完整的桩基试验数据,进行相应的ABAQUS数值模拟,探讨了应用在黄土地区的大直径振动沉管灌注桩的单桩承载力确定方法,并通过数值模拟将振动灌注桩单桩承载力与试验测试结果对比,得到模拟结果与试验测试结果基本一致的结论,证明数值模拟的合理性和在黄土地区使用大直径振动沉管灌注桩的可行性。The large-diameter vibration driven cast-in-place pile is widely used in the construction site,and the design and construction technology of pile cap foundation are relatively mature.Based on Tianshui cargo airport project,the insitu test is completed,and the pile foundation test data is collected.According to the ABAQUS numerical simulation,this paper discusses the method to determine the bearing capacity of single pile of large diameter vibration driven cast-inplace pile applied in loess area,and compares the bearing capacity with the test result through numerical simulation,and obtains the conclusion that the simulation result is basically consistent with the test result,which proves the rationality of the numerical simulation and the feasibility to use large diameter bored piles in loess area.

关 键 词：湿陷性黄土 振动沉管灌注桩 单桩承载力 数值模拟 

分 类 号：TU44[建筑科学—岩土工程]