双排预应力管桩与水泥土搅拌桩组合在基坑支护中的应用

Application of Double Row Prestressed Pipe and Cement Soil Mixing Pile in Foundation Pit Support

我国城市建设的步伐越来越快,出现了一些基坑开挖和支护的工程建设问题,各类组合支护体系也相应产生,而水泥土搅拌桩+双排预制桩的组合支护体系是相对新颖的支护形式之一。基于安庆市中心区某工程基坑支护案例,介绍双排预制桩与水泥土搅拌桩支护的设计方案、施工要点,为今后该地区双排预制桩与水泥土搅拌桩支护应用提供参考。

The pace of urban construction in our country is becoming faster and faster. At the same time, some excavation and supporting engineering construction problems have emerged,all kinds of composite supporting system are also produced correspondingly, and the composite support system of cement soil mixing pile and double row precast pile is one of the relatively new form of support.Based on a case of foundation pit support in a central district of Anqing, this paper introduces the design scheme and construction points of double row precast pile and cement soil mixing pile, which can provide reference for the application of double row precast pile and cement soil mixing pile support in the future.