摘要
本文结合试验梁阐述了预弯预应力复合梁从制作到使用的各阶段正截面应力计算方法,提出了预弯预应力复合梁开裂后的强度计算公式,并对日本现行规范所荐用的计算方法进行了比较、讨论和分析。
According to the behavior of a testing beam, the paper prsents the flexural stress distribution of preflexed composite beam at various stages from construction to service, a formula used for calculating the pose-cracking strength of preflexed composite beams is developed and the calculation menthod proposed in the code of Japan is diseussed as well
关键词
预弯力
预弯复合梁
开裂弯矩
preloading
preflexed composite beams
first (second) concrete
crack moment
