预应力混凝土框架梁裂缝控制实用方法的探讨

A Practical Approach to Crack Control in Prestressed Concrete Frame Beams

我国现行规范中给出关于裂缝宽度的计算方法较为繁琐复杂,导致一定程度上限制了预应力混凝土结构的发展。本文叙述了部分学者对于裂缝控制提出的一些简化的计算方法及预防产生裂缝的措施。对于提出的简化计算方法,主要围绕钢筋应力控制法进行展开,并主要针对其裂缝产生的原因和危害提出预防措施和控制办法。

The calculation methods given in China's current codes for crack widths are rather cumbersome and complicated,leading to a certain degree of restriction on the development of prestressed concrete structures.This paper describes some simplified calculation methods proposed by some scholars for crack control and some measures to prevent the generation of cracks.For some of the simplified calculation methods proposed,the paper mainly focuses on the reinforcement stress control method,and the preventive measures and control methods proposed mainly for the causes and hazards of crack generation.