PC工法组合钢管桩在超大深基坑工程中的应用

Application of PC Construction Method Combined Steel Pipe Pile in Super Deep Foundation Pit Engineering

通过对杭州某大学项目超大深基坑工程案例背景的分析、围护体系的比选、实际施工过程中的各类监测等方面的研究,证明PC工法组合钢管桩体系能有效地解决小止口拉森钢板桩截面刚度小带来的局限性,是小止口拉森钢板桩的升级和延伸。同时,与传统的围护体系相比,PC工法组合钢管桩具有轻量简便、工期短、成本低、绿色环保等特点,可为后续同类工程的施工运用提供理论和实践基础。

Through the analysis of the case background of a university project in Hangzhou,the comparison and selection of enclosure system and various monitoring in the actual construction process,it is proved that the PC construction method combined steel pipe pile system can effectively solve the limitations caused by the small section stiffness of Larsen steel sheet pile with small stop.It is the upgrading and extension of Larsen steel sheet pile with small stop.At the same time,compared with the traditional enclosure system,PC construction method combined steel pipe pile has the characteristics of light weight,simple,short construction period,low cost and green environmental protection,which can provide a theoretical and practical basis for the construction and application of subsequent similar projects.