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在抗震设防烈度为8度及以上的地区,当建筑物的基础采用预应力高强混凝土管桩时,应验算桩的抗剪承载力能否满足较大底部剪力的要求。通过某小区预应力高强混凝土管桩的结构设计,结合桩的水平承载力试验,探讨8度区预应力高强混凝土管桩的适用性,并指出了布桩设计时应注意的关键问题。
In areas where the seismic fortification intensity is 8 degrees and above, when the prestressed high-strength concrete pipe pile is used as the foundation of a building, whether the shear capacity of the pile can meet the requirement of larger bottom shear force should be verified. Through the structural design of prestressed high strength concrete pipe piles in a district and the test of horizontal bearing capacity of piles, the applicability of prestressed high strength concrete pipe piles in 8th district is discussed, and the key problems that should be noticed in the design of piles are pointed out.