摘要
针对部分预应力 (PPC)梁裂缝控制问题 ,在实验梁数据的基础上 ,对PPC梁裂缝宽度的直接计算方法和用名义拉应力实施间接控制的方法进行了分析研究 ,解析了当今世界具有代表性的几种规范中裂缝宽度的计算模式及其对PPC梁的计算效果。同时结合裂缝宽度的计算 ,对已获审查通过的我国《混凝土结构设计规范》(GB5 0 0 10 )进行了分析。相关结论可供PPC梁设计参考。
Engaging in the problem of the crack-controlling of PPC beam,this paper analyzes and discusses two ways of crack-controlling by calculating directly and controlling indirectly through the nominal tension stress,based on the test results of some experimental beams.Several crack width calculation modes in the present typical codes in the world as well as their calculation effects for the PPC beams have been introduced and analyzed.Based on the calculation,the new Concrete Structure Design Code (GB50010),which will be promulgated as the substitute for GBJ10—89 ,has been analyzed also.Some conclusions can be applied to the structural design of the PPC beam.
出处
《建筑结构》
CSCD
北大核心
2001年第11期24-28,53,共6页
Building Structure
关键词
PPC梁
裂缝控制
预应力
计算
PPC beam
crack-controlling
codes
nominal tension stress
