大型排水泵房基坑优化设计研究

目前大量排水工程的地下泵房采用基坑支护的方式施工。大型排水泵房的结构具有地下各层的层高比较高、内隔墙布置复杂等特点。因此，基坑支护工程的设计和施工存在内支撑布置和换撑困难的问题。以某大型排水泵房的基坑优化设计为例探讨了一种利用给排水地下构筑物的结构特征布置换撑的方法，减小基坑支护工程中的换撑难度，加快施工进度。

Study on Optimization Design of Foundation Pit for Large-sized Drainage Pumping House

At present, the underground pumping house in a lot of drainage projects is constructed by the way of foundation pit support. The structures in the large-sized drainage pumping houses have the characteristics of higher floor height and complex internal parting wall layout in each underground floor. Therefore, there are difficult problems of internal supporting layout and replacement in the design and construction of foundation pit supporting projects. Taking the optimization design of foundation pit for a large-sized drainage pumping house as an example, a method of utilizing the structural feature layout for the support replacement of underground structures for water supply and drainage is discussed in order to decrease the support replacement difficulty in the foundation pit supporting project and to speed up the construction schedule.