Effect of Interfacial Strength on Bending Properties of Reinforced Concrete Beams  

作　　者：ZHANG Yafang YANG Wenlong LIU Hao 

机构地区：[1]Faculty of Civil Engineering,Guangzhou University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2013年第6期1161-1166,共6页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(No.51278136);the S&T Planning of Guangdong Province(No.2011B050300019);the Financial Support for Top Levels of Guangdong Universities(No.2050205);the Yangcheng Scholars Research Fund for Guangzhou Municipal Universities(No.12A007G)

摘　　要：By taking into consideration of meso-scopic level, four-point bending numerical model of different interfaces was established to analyze the effect of interracial strength on the bending properties of reinforced concrete beams with the diagrams of crack pattern, the load- step curve and the cumulative AE- loading step curve. The experimental result shows that the peak load, the cracking load and the stiffness before cracking increase with the interfacial strength. Furthermore, the specimen with strong interface presents high brittleness during the failure process, while both bearing capability and ductility could be found in the specimen with moderate interfacial strength.By taking into consideration of meso-scopic level, four-point bending numerical model of different interfaces was established to analyze the effect of interracial strength on the bending properties of reinforced concrete beams with the diagrams of crack pattern, the load- step curve and the cumulative AE- loading step curve. The experimental result shows that the peak load, the cracking load and the stiffness before cracking increase with the interfacial strength. Furthermore, the specimen with strong interface presents high brittleness during the failure process, while both bearing capability and ductility could be found in the specimen with moderate interfacial strength.

关 键 词：reinforced concrete interfacial strength peak load acoustic emission 

分 类 号：TU375.1[建筑科学—结构工程] TB333[一般工业技术—材料科学与工程]