预制钢筋混凝土梁受压区侧面粘钢对短期刚度的影响  

Effect of short-term rigidity on precast reinforced concrete beam of side stuck steel in compression zone

作　　者：李玉[1] 

机构地区：[1]平顶山工学院土木工程系,河南平顶山467001

出　　处：《西安建筑科技大学学报（自然科学版）》2007年第5期646-651,共6页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：国家自然科学基金项目(59878044)

摘　　要：对12根预制钢筋混凝土梁压区粘贴钢板加固后的受力特性进行了试验研究,通过分析受压区粘钢对预制钢筋混凝土梁在正常使用极限状态下短期刚度和挠度的影响,并结合《混凝土结构加固设计规范》(GB50367-2006)给出的粘贴钢板加固受弯构件正截面计算承载力计算方法,本文提出了压区粘钢加固钢筋混凝土梁短期刚度的计算方法,供工程实践参考.理论计算与试验结果对比表明,所提出的计算方法具有较高精度.An experimental study is carried on about 12 reinforced concrete beam strengthened with bonded steel in compression zone, and the effect of the short period rigidity and deflection of bonding steel plate in compression zone are analyzed for concrete beams under ultimate state of normal service. Considering the computational method of nominal section for bonded steel plates for strengthening to the bended components supplied by Design code for strengthening concrete structure （GB50367-2006）. This article, based on the test results, proposed the formula of short-term rigidity. The contrast of theoretical calculation and experimental results shows the method has a good precision.

关 键 词：粘贴钢板 加固 受弯构件 短期刚度 

分 类 号：TU375.1[建筑科学—结构工程]