摘要
文章针对基坑工程中盖挖荷载的确定方法进行了研究,根据车辆行驶方向与路面盖板铺设方式的不同,给出了各自的取值方式。同时以一个盖挖施工的地下通道为例,采用有限元和现场监测的方法研究了不同路面盖板布置形式下基坑盖挖施工对邻近框架结构变形以及内力的影响。研究表明盖板全铺设施工导致的建筑底板附加沉降量最大,较非盖挖法大21%;盖板全铺设施工对坑底隆起控制能力最强,开挖完成后坑底隆起较非盖挖法小7.3%。
This paper presents the method for construction load determination in cover - cut method. The calculating method is presented according to the travel orientation of automobile ar, d the pave mode of pavement plate. Also, a finite element method is employed to analyze different of types excavation （ namely full cover - cut, half - cover -cut, and non -cover- cut ） for induced neighboring building＇ s displacement and internal force. The results show that the building＇s vertical displacement induced by full - cover excavation is 21% bigger than that by non - cover excavation, full - cover excavation has the strongest ability to control the heave of foundation pit and the heave of foundation pit is 7.3% smaller than that by non - cover excavation.
出处
《地下空间与工程学报》
CSCD
北大核心
2009年第A02期1675-1680,共6页
Chinese Journal of Underground Space and Engineering
基金
上海市科委资助
项目编号:072112010&08201201501
关键词
盖挖法
基坑开挖
路面荷载
地层变形
cover-cut method
deep excavation
pavement load
excavation induced ground movement
