预应力钢-混凝土连续组合梁抗裂度计算  

THE CALCULATION OF PRESTRESSED STEEL-CONCRETE CONTINUED COMPOSITE BEAMS CRACK RESISTANCE IN NEGATIVE BENDING AREA

作　　者：郭风琪[1] 余志武[1] 

机构地区：[1]中南大学土木建筑学院,长沙410075

出　　处：《钢结构》2003年第2期21-24,共4页Steel Construction

基　　金：国家自然科学基金资助项目 ( 5 98780 0 7)

摘　　要：根据基本假设 ,推导了预应力钢 -混凝土连续组合梁的抗裂度计算公式及简化计算公式 ,这些公式形式上能与现行的混凝土结构抗裂度计算公式相协调 ,并经过计算统计 ,提出了简单实用的钢 -混凝土组合梁负弯矩区截面塑性系数表 ,其计算结果与 8片预应力钢 -混凝土连续组合试验梁的实测结果吻合较好。研究成果已应用于工程设计。According to the basic hypothesis,the crack resistance formula and predigestion formula of prestressed steel concrete continued composite beams are derived The two formulas assort the present formula of concrete construction crack resistance formally From this paper,a simple and practical table for plastic factor of section,which is presented by statistical analysis,is put forward The correlation between the calculated results and the experimental ones of the 8 pieces of prestressed steel concrete continued composite beams are very good The research results have been applied to design

关 键 词：预应力钢-混凝土连续组合梁 负弯矩区 抗裂度 混凝土结构 

分 类 号：TU398.9[建筑科学—结构工程]