无粘结部分预应力梁抗弯性能的试验研究  

EXPERIMENTAL STUDY ON FLEXURE PROPERTIES OF UNBONDED PARTIALLY PRESTRESSED CONCRETE BEAMS

作　　者：白力更[1] 束继华[1] 

机构地区：[1]冶金部建筑研究总院

出　　处：《工业建筑》1992年第2期22-26,共5页Industrial Construction

摘　　要：本文通过对纯弯段内配有腹筋的8根无粘结及2根有粘结(部分)预应力混凝土梁的试验,就无粘结梁在不同预应力度下的抗弯性能,配置与不配非预应力筋的无粘结梁性能对比以及箍筋的作用等因素进行了研究。通过分析,提出了以(?)及(?)为参数的无粘结筋极限应力增量公式。In this paper, by the tests of 8 unbonded and 2 bonded partially prestressed reinforced concretebeams with stirrups along the range of pure flexure, the flexure strength of unbonded beams at the differ-ent prestressing degree, the comparison between the properties of unbonded beams with and withoutunprestressed reinforcement, the effect of stirrup and other factors have been studied. An equation to cal-culate the limit stress increment of unbonded tendons based on the parameters q_(pc) and q_0 is proposed inthe paper.

关 键 词：无粘结 预应力 抗弯性能 混凝土 

分 类 号：TU378.203[建筑科学—结构工程]