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大直径圆形地下连续墙墙体厚度对基坑水平位移的影响

发表时间:2014-07-31  浏览量:1403  下载量:585
全部作者: 刘贺丰,周仲华,朱军昌,吴_"
作者单位: 兰州大学西部灾害与环境力学教育部重点实验室;兰州大学土木工程与力学学院;上海建科工程咨询有限公司
摘 要: 借助ANSYS软件建立了带环撑与无环撑2类大直径圆形地下连续墙模型,在这2类围护结构采用多种墙体厚度的情况下,运用空间弹性地基板法对基坑的水平位移进行了计算分析,结果表明:适当增加墙体厚度可以有效减小基坑水平位移,但当厚度超过一定数值后,继续增加厚度对减小位移的作用并不明显。对变形结果进一步分析,得到了墙体厚度与基坑水平位移,以及墙体厚度与位移减小率的函数关系,为墙体厚度的取值提供了一些参考。
关 键 词: 地基基础工程;岩土工程;圆形地下连续墙;墙体厚度;空间弹性地基板法;水平位移
Title: Influence of wall thickness of large diameter circular diaphragm wall on the horizontal displacement of foundation pit
Author: LIU Hefeng, ZHOU Zhonghua, ZHU Junchang, WU Tao
Organization: Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education, Lanzhou University; College of Civil Engineering and Mechanics, Lanzhou University; Shanghai Jianke Engineering Consulting Co. Ltd.
Abstract: By ANSYS software, the two models of circular diaphragm walls which had or not had ring beam were established. By using the method of 3D spring-slab, the variation of maximum horizontal displacement of the foundation pit was studied when the thickness of these large diameter circular diaphragm walls changed. The calculation results showed that increasing the thickness of the wall could effectively reduce the horizontal displacement of foundation pit when the thickness was thin. But when the thickness exceeded a certain value, the horizontal displacement would not be reduced significantly, if the thickness of the wall continued to be increased. Through further analysis of the deformation results, the functional relations of wall thickness-maximum horizontal displacement and wall thickness-the rate of decrease of displacement were got. This research could provide some references for taking value of the wall thickness.
Key words: foundation engineering; geotechnical engineering; circular diaphragm wall; thickness of diaphragm wall; 3D spring-slab method; horizontal displacement
发表期数: 2014年7月第14期
引用格式: 刘贺丰,周仲华,朱军昌,等. 大直径圆形地下连续墙墙体厚度对基坑水平位移的影响[J]. 中国科技论文在线精品论文,2014,7(14):1363-1370.
 
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