带板托预应力钢-混凝土连续组合梁抗裂度计算  

The Calculation of Crack Resistance in Prestressed Steel-concrete Continuous Composite Beams with Bracket

作　　者：郭风琪[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《长沙铁道学院学报》2003年第1期13-18,共6页Journal of Changsha Railway University

基　　金：国家自然科学基金资助项目(59878007)

摘　　要：根据文中的基本假设,推导了带板托预应力钢 混凝土连续组合梁的抗裂度计算公式及简化计算公式,其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;经过计算统计,提出了简单实用的带板托钢 混凝土组合梁负弯矩区截面塑性系数表,其计算结果与11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 in this paper,the crack resistance formula and predigestion formula of prestressed steelconcrete continuous composite beams with bracket are deduced.The two formulas coordinate with nowexisting formula of concrete construction crack resistance in form.From this paper,a simple and practical table for plastic factor of section is put forward through statistical analysis.The calculated results go well with the experimentation of the 11 pieces prestressed steelconcrete continuous composite beams.The research results have been applied to engineering design.Keywords:prestressed steelconcrete continuous composite beam;negative bending moment area;crack resistance

关 键 词：预应力钢-混凝土连续组合梁 负弯矩区 抗裂度 

分 类 号：TU398.9[建筑科学—结构工程]