某桥梁深基坑开挖支护技术探讨

Discussion on Support Technology of Deep Foundation Pit Excavation of a Bridge

广州北三环高速公路挂绿湖大桥承台深基坑采用钢板桩+钢支撑支护结构方案,本文阐述了该桥梁承台深基坑支护设计方法,运用有限元计算方法对基坑支护结构的位移、内力进行了计算与分析,对基坑支护结构的强度及稳定性进行了验算,并提出了下一步的施工建议,以期对类似工程起到参考和借鉴作用。

The steel sheet piles and steel supports are employed in the supporting structure of the deep excavation of the pile caps of the Gualv Lake Bridge in Guangzhou North Third Ring Expressway foundation The design method of this deep foundation pit is elaborated in detail, where three-dimensional finite element method is used to calculate the displacement and internal force of its supporting structure. The strength and stability of the excavation supporting structure are also checked. Accordingly, the suggestions for further construction are proposed to provide reference for similar projects.