无粘结部分预应力混凝土梁的延性分析  

Ductility Analysis of Unbonded Partially Prestressed Concrete Beams

作　　者：王逸[1] 

机构地区：[1]中国建筑科学研究院建筑结构研究所

出　　处：《建筑科学》1993年第1期19-24,共6页Building Science

摘　　要：本文根据无粘结部分预应力混凝土梁的试验结果,研究了影响该类梁延性的主要因素,验证了在计算机上用弯矩—曲率法对该类梁进行计算分析是可行的、足够精确的。根据试验及计算结果,证明《无粘结预应力混凝土结构设计与施工规程》(报批稿)中关于受压区高度限制的取值是合适的,并提出了计算位移延性比的公式。Based on the experimental results of unbonded partially prestressed concrete beams, this paper shows the effect of various factors on the ductility of the beams. The whole tested process of the load versus displacement presents that theoretical analysis of the beams by means of the moment-curvature method using computer is fitted. According to the experimental data and calculations, it is proved that the limiting value of the depth of compression zone in the beams section proposed in 'Specification for Design and Construction of Unbonded Prestressed Concrete Structures' (final draft) is applicable. A formula for estimating the displacement ratio of ductility is also presented in this paper.

关 键 词：预应力混凝土 梁 无粘结 延性分析 

分 类 号：TU378.2[建筑科学—结构工程]