预应力混凝土框架顶层边柱的合理设计

Reasonable Design of Top-Exterior Columns of PC Frames

本文分析了预应力混凝土框架顶层梁柱线刚度比和预应力引起的次弯矩对框架顶层边柱的内力与截面配筋的影响,研究了框架柱中施加预应力对截面承载力的作用,随后,提出了解决预应力混凝土框架顶层边柱配筋过多这一难题的有效途径。

This paper analyses the influence of the stiffness ratio of top-beam to exterior-column and the secondary moments caused by post-tensioned tendons in PC frames on internal forces and the amount of reinforcement in top-exterior column, and the effect of prestressing in column upon carrying capacity of cross-section. The effective ways to solve the problem of excessive reinforcement for designing top-exterior column of PC frames are presented.