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南京河西某工程9号地块花园洋房采用预制预应力管桩基础,施工期间由于施工顺序及基坑周边超载等综合原因,工程桩大量倾斜偏位,最大偏位值达到2 000 mm,工程桩偏位严重超出规范要求。重新打桩已不可能。设计通过静载荷试验方法,取得了不同斜率偏位桩的残余承载力。确定了以倾斜桩作为工程桩承载主体并考虑长期荷载作用;部分位置适当补充树根桩,并适当增加基础刚度的方法,取得了良好的处理效果,保证了结构的安全,为业主节省了大量的桩基础费用和时间。通过处理过程中取得的数据,为类似工程提供参考。
The prefabricated prestressed pipe pile foundation is used in the garden house on the 9th block of a certain project in Hexi, Nanjing. Due to the construction sequence and overloading around the foundation pit during construction, the pile is inclined and deviated in a large amount with a maximum deviation of 2 000 mm. Deviation seriously exceeded the standard requirements. Re-piling has been impossible. Through the static load test method, the residual bearing capacity of different slope deviation piles was obtained. It is determined that the inclined pile is the main body of the engineering pile and considering the long-term load; the partial root position is properly supplemented by the root pile and the foundation rigidity is appropriately increased, the good treatment effect is obtained, the safety of the structure is ensured, Pile Foundation costs and time. Through the process of obtaining data for similar projects provide a reference.