摘要
电力电缆工程浅基坑机械化施工时,无专项支护设计方案,多存在简易支护措施不当或过度使用钢板桩支护的乱象发生。参照相关规程规范并结合实际工程经验,对浅基坑的边界条件进行研究梳理,确定浅基坑支挡结构安全等级、超载取值等参数。通过位于天津典型软土地区的工程实例,以控制变量法分别对超限值、地基加固以及钢板桩内撑的影响效果进行研究,确定拉森钢板桩支护结构的形式选择,对沟槽浅基坑支护优化设计给予一定的技术引导与参考。
During the mechanized construction of shallow foundation pit for power cable projects,there is no special support design scheme,and there are often chaotic phenomena such as improper simple support measures or excessive use of steel sheet pile support.Referring to relevant regulations and specifications and combining practical engineering experience,the boundary conditions of shallow foundation pits are studied and sorted out to determine the safety level,overload value,and other parameters of the shallow foundation pit retaining structure.Through the engineering example located in the typical soft soil area of Tianjin,the Control variates is used to study the influence effect of the over limit value,foundation reinforcement and steel sheet pile internal support,determine the type selection of Larsen steel sheet pile support structure,and provide some technical guidance and reference for the optimization design of trench shallow foundation pit support.
作者
邵冰然
张海威
唐继朋
秦涛
白苏娜
雷铮
左焦
于江浩
SHAO Bingran;ZHANG Haiwei;TANG Jipeng;QIN Tao;BAI Suna;LEI Zheng;ZUO Jiao;YU Jianghao(State Grid Tianjin Economic Research Institute,Tianjin 300010,China;China Energy Construction Group Tianjin Electric Power Design Institute Co.,Ltd.,Tianjin 300180,China;State Grid Tianjin Electric Power Company,Tianjin 300010,China)
出处
《建筑结构》
北大核心
2023年第S02期2636-2640,共5页
Building Structure
关键词
机械化施工
典型软土地区
边界条件
拉森钢板桩支挡结构
mechanized construction
typical soft soil area
boundary condition
larsen steel sheet pile retaining structure
