预应力对预应力混凝土管桩和空心方桩轴心受压承载力的影响

Influence of Prestress on Axial Compression Bearing Capacity of Prestressed Concrete Piles and Hollow Square Piles

介绍了目前预压应力对预应力混凝土管桩和空心方桩桩身轴心受压承载力设计值的影响所持有的两种不同观点,并指出按照文中公式(4)计算的预应力桩轴压承载力设计值与实际情况较为相符,值得推广使用。

Two different views about the influence of the preloading stress on pile body axial compression bearing capacity design value of prestressed concrete piles and hollow square piles at present are introduced. Meanwhile, it points out that prestressed pile axial compression bearing capacity design value got by the equation （4） in this paper is consistent with actual situation, and the calculate method is worthy of promoting for standard design and engineering design.