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结合上海软土地区4个场地15根单桩水平静载荷试验,研究预应力管桩在水平荷载作用下的受力性状。根据试验实测数据,探讨预应力管桩单桩水平承载力的试验判定标准,认为对于配筋率较低且不允许出现裂缝的预应力桩应结合临界荷载和水平允许变形值10 mm对应荷载综合确定。并通过ABAQUS有限元软件,探讨不同型号预应力管桩水平承载特性,从中得到一些结论为今后上海地区单桩水平承载力的设计和理论研究提供参考。
Combined with the static load test of 15 single piles at 4 sites in Shanghai soft soil area, the stress behavior of prestressed pipe piles under horizontal load is studied. Based on the experimental data, the test criteria for the horizontal bearing capacity of single pile of prestressed tubular piles are discussed. It is considered that for prestressed piles with low reinforcement ratio and not allowed to crack, critical loads and horizontal allowable deformation values should be combined with 10 mm. determine. Through ABAQUS finite element software, the horizontal bearing characteristics of different types of prestressed pipe piles are discussed. Some conclusions are drawn to provide references for the design and theoretical study of the horizontal bearing capacity of single piles in Shanghai in the future.