钢筋接头率对混凝土柱抗震性能影响研究  

THE INFLUENCE OF REINFORCEMENT JOINT RATIO ON SEISMIC BEHAVIOR OF CONCRETE COLUMNS

作　　者：田忠诚 王广义[1] 徐阳 姬国梁 杨广晖[3] TIAN Zhongcheng;WANG Guangyi;XU Yang;JI Guoliang;YANG Guanghui(Engineering Research Institute of Appraisal and Strengthening of Shandong Jianzhu University Co.,Ltd.,Jinan 250101,China;Shandong Jiangu Special Engineering Co.,Ltd.,Jinan 250101,China;Shandong Jianzhu University,Jinan 250101,China)

机构地区：[1]山东建筑大学工程鉴定加固研究院有限公司,济南250101 [2]山东建固特种专业工程有限公司,济南250101 [3]山东建筑大学,济南250101

出　　处：《低温建筑技术》2022年第11期87-91,共5页Low Temperature Architecture Technology

摘　　要：为考察钢筋机械连接接头面积百分率对钢筋混凝土柱抗震性能的影响,文中开展了12个不同接头率的钢筋混凝土柱低周往复加载试验,得到了该类试件的滞回曲线、荷载-应变曲线等,研究了钢筋机械连接接头面积率对混凝土柱抗震性能的影响。结果表明如连接接头不发生破坏,试件的破坏形式、受力特性、承载力和变形性能与无钢筋接头的试件相同,且与钢筋的接头率无关,此时钢筋的接头率对结构的抗震性能没有影响;如接头不满足要求,试件在荷载作用下接头易发生滑移破坏,此时试件发生突然“脆性”破坏,显著影响其抗震性能。To investigate the effect of the area percentage of mechanical joint of steel bars on the seismic behavior of reinforced concrete columns,12 low cycle cyclic loading tests of reinforced concrete columns with different joint rates were carried out,and the hysteresis curves and load-strain curves of such specimens were obtained.The influence of the area ratio of mechanical joint of steel bar on the seismic behavior of concrete columns is studied.The results show that if the connection joint does not fail,the failure mode,stress characteristics,bearing capacity,and deformation performance of the specimen are the same as those of the specimen without steel joints,and have nothing to do with the joint ratio of steel bars,whereas the seismic performance of the specimen has not been affected.If the joint does not meet the requirements,it is prone to slip failure under the load,and the specimen suffers a sudden brittle failure,which significantly affects its seismic performance.

关 键 词：钢筋连接接头率 机械连接 混凝土柱 抗震性能 

分 类 号：TU375.3[建筑科学—结构工程]