【摘要】 基于对桩基的地震震害破坏特点的分析,指出在地震作用下,桩身破坏截面承受与弯矩同量级的剪力值;总结目前预应力高强混凝土管桩(PHC)设计规范、施工阶段存在的问题,指出其在地震作用下存在抗剪承载力不足的安全隐患。在总结国内外有关PHC桩身地震作用下的抗剪设计计算方法的研究的基础上,指出进一步研究的问题和方向。更多还原

【Abstract】 According to the analysis of destruction of piles under earthquake,it shows that the shear stress has nearly the same order of magnitude compared with the bending moment in the destroy section in piles under seismic load;the existing problems about the process of the design and construction of PHC is summarized,while the possibility of insecurity in shearing capability under seismic load is pointed out.Based on the research carried out by the professors both at home and aboard,some recommendations for future research are presented.更多还原