高强次轻混凝土梁抗弯性能试验研究  

Flexural Performance of Reinforced High Strength Specified Density Concrete Beams

作　　者：刘沐宇[1] 李鸥[1] 丁庆军[2] 胡曙光[2] 

机构地区：[1]武汉理工大学道路桥梁与结构工程湖北省重点实验室,武汉430070 [2]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《武汉理工大学学报（交通科学与工程版）》2007年第1期9-12,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家863项目资助(批准号:2002AA335080)

摘　　要：通过高强次轻混凝土梁的抗弯试验,对高强次轻混凝土梁的极限抗弯承载力、荷载-挠度曲线、延性和裂缝进行了分析,结果表明:与同等强度的轻集料混凝土梁相比,次轻混凝土梁具有较高的刚度,但略小于普通混凝土梁;使用荷载作用下次轻混凝土梁的挠度和裂缝宽度都满足正常使用极限状态的要求.次轻混凝土梁在破坏时都表现出较好的延性.Specified density concrete is made of light weight aggregate and natural aggregate. Based on the flexural tests of high-strength specified density concrete beams, the ultimate flexural strength, the load-deflection, ductility and crack patterns are studied in this paper. The results show that highstrength specified density concrete beam has great rigidity. Its ductility is approximate to the normalweight concrete beam. High-strength specified density concrete beam satisfies the service-ability requirements of short-term deflection and maximum crack width, and exhibits sufficient ductility at failure.

关 键 词：次轻混凝土 轻集料 抗弯 挠度 延性 裂缝 

分 类 号：TU502.6[建筑科学—建筑技术科学]