软土深基坑多圆环梁临时支撑体系静力切割拆除施工技术的应用

Application of Static Cutting and Demolition Construction Technology for Multi-ring[HJ47x]Beam Temporary Support System in Soft Soil Deep Foundation Pit

多圆环梁临时支撑体系以其受力合理、支撑面积小、挖土方便、材料用量少、经济效益好等优点在变形控制严格、场地受限的地下空间施工中得到了广泛运用。本文阐述了以六合区方州广场人防工程为依托、通过方案比选后选用的静力切割工艺拆除多圆环临时支撑体系,其具有适应性强、速度快、无噪音污染、安全环保等优点,可为类似工程建设参考。

The multi-ring beam temporary support system has been widely used in underground space construction with strict deformation control and limited site due to its advantages of reasonable stress,small support area,convenient excavation,low material consumption,as well as good economic benefits.Taking the civil air defense project of Fangzhou Square in Liuhe District as example,this article explains the static cutting process selected after program comparison to dismantle the multi-ring temporary support system.It has the advantages of strong adaptability,high speed,no noise pollution,safety,environmental protection,etc.,and can provide reference for similar engineering construction in the future.