坑边不均衡堆载对基坑围护结构及周边环境影响分析  

Influence Analysis of Building Envelope and Surrounding Environment Under the Excavation Unbalanced Heaped Loading

作　　者：程群[1] 刘芳玲[1] 王强[2] 

机构地区：[1]中建四局第六建筑工程有限公司,安徽合肥230011 [2]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《施工技术》2015年第19期68-73,共6页Construction Technology

基　　金：中国建筑总公司项目(CSCEC-2013-Z-10)

摘　　要：为了深入研究基坑底板施工过程中坑边不均衡堆载对基坑围护结构的内力和位移及周边环境的影响,运用岩土有限元软件MIDAS/GTS模拟了不均衡堆载下深基坑开挖过程,从而得到了不均衡堆载条件下基坑围护结构内力、变形及地表沉降的分布规律。计算和分析结果表明:坑边不均衡堆载对基坑围护结构的内力和位移及地表沉降产生了较大影响,尤其是围护结构水平位移及地表沉降,这使得基坑的稳定性处于不利的状态。In order to research the influence of internal force of retaining structures, the deformation and the surrounding environment under the excavation side loading, during construction of foundation excavation bottom, MIDAS/GTS was used to simulate the unbalanced heaped load under deep excavation process, which obtained internal force of retaining structure, deformation and subsidence. The results show that building envelop and surrounding environment under the excavation side loading has a larger influence, especially the horizontal displacement of retaining structure and the settlement of ground, which makes the foundation excavation in unfavorable state.

关 键 词：地下工程 基坑 不均衡堆载 围护结构 内力 位移 

分 类 号：TU43[建筑科学—岩土工程]