超大基坑中环撑与桁架直撑的方案优选

随着超大异形深基坑在建筑工程中的出现越来越普遍,在深基坑开挖和结构回筑阶段如何保证基坑安全成为业界人士关注的重点,通过广佛环线城际铁路地下车站陈村站超长、超宽基坑设计支撑方案的比选,结合周边环境及地质水文情况,从基坑安全性、可行性和经济性等多方面出发,分为四种工况进行理论计算分析,得出基坑环形内支撑和桁架直撑的优缺点,为相似工程的设计提供借鉴.

Ring Beam and Truss Vertical Support of Super Foundation Plan Optimization

With super large special-shaped deep foundation pit appears more and more common in building engineering,how to guarantee the pit security in excavation and structure gyrus hole stage becomes the focus of the industry.Through the selection of Guang-Fo loop intercity railroad underground station Chencun station super-sized design of foundation pit support scheme,with the surrounding environment and geology and hydrology situation,through foundation safety,fea-sibility,economy and other aspects,calculating under four working condition,concluded the ad-vantages and disadvantages between ring beam support and truss vertical support of foundation pit,provide a reference for similar engineering design.