共用围护结构的临近基坑开挖数值模拟研究  

Numerical simulation study on the adjacent foundation pit excavation with shared support structure

作　　者：汤善彪 TANG Shanbiao(China Railway SIYUAN Survey and Design Group Co.,Ltd Wuhan 430063)

机构地区：[1]中铁第四勘察设计院集团有限公司隧道院,武汉430063

出　　处：《铁道勘测与设计》2024年第2期86-88,100,共4页Railway Survey and Design

摘　　要：为研究临近基坑开挖对共用围护结构的已建工程的影响,基于MidasGTS有限元数值模拟软件,开展了沈阳至海口高速公路荷坳至深圳机场段改扩建高尔夫明挖段工程的结构变形及内力研究。计算结果表明:由于双重土压力作用以及悬臂长度影响,共用围护结构的变形和内力相对较大。预留堆土措施在减小一期围护和主体结构的变形和内力方面都具有显著的效果,文章结论可为相关工程提供参考。In order to study the influence of adjacent foundation pit excavation on the built project with common envelope structure,based on Midas GTS finite element numerical simulation software,the structural deformation and internal forces of golf excavation project in Jihe section of Shenhai Expressway are studied.The calculation results show that the deformation and internal force of the common enclosure structure are relatively large due to the effect of double earth pressure and cantilever length.The measures of soil reservation have significant effect on reducing the deformation and internal force of the enclosure and main structure in the first stage.The conclusions of this paper can provide reference for related projects.

关 键 词：临近基坑 共用围护结构 数值模拟 位移 内力 

分 类 号：TU7[建筑科学—建筑技术科学]