部分预应力混合配筋框支转换梁结构拟静力试验研究  

PSEUDO-STATIC TEST OF PARTIALLY PRESTRESSED HYBRID REINFORCED FRAME-SUPPORTED TRANSFER BEAM STRUCTURE

作　　者：徐莱[1] 陈进[1] 王仲刚[1] 吴世娟[1] 陆言洲 江正[2] 

机构地区：[1]后勤工程学院,重庆401311 [2]西昌卫星发射中心司令部工程处,四川西昌615000

出　　处：《工业建筑》2017年第3期83-88,共6页Industrial Construction

基　　金：重庆市前沿与基础项目(cstc2014jcyjA30010);重庆市社会民生科技创新专项(cstc2015shmszx30006)

摘　　要：通过对1榀转换梁下部1根碳纤维复材筋施加预应力的框支转换梁结构进行拟静力试验,分析部分预应力混合配筋框支转换梁结构在竖向和水平荷载作用下的裂缝发展规律、筋材应变规律,研究试件的承载能力、延性和滞回曲线等抗震性能。试验结果表明:对转换梁施加预应力能够有效抑制转换梁在跨中区域裂缝开展,使试件有较高的承载力;试件延性系数大于3,强屈比达到1.31以及滞回曲线较为丰满,说明部分预应力混合配筋框支转换梁结构具有较好的延性和抗震性能。Through pseudo-static test of one piece of hybrid reinforced frame-supported transfer beam structure with a prestressed CFRP bar,the specimen cracks development law and the rule of reinforcement strain under vertical load and horizontal loads were analyzed. Further,bearing capacity,ductility,hysteretic curve etc of the specimen were also studied. The test results indicated that prestressed transfer beam with CFRP bars could effectively restrain cracks development in the middle of the transfer beam,which made the frame-supported transfer beam structure have higher bearing capacity. In addition,the ductility coefficient of the specimen was greater than 3,yield-to-tensile ratio of1. 31 and the plump hysteresis curve showed that partially prestressed hybrid reinforced frame-supported transfer beam structure had better ductility and seismic performance.

关 键 词：预应力 混合配筋 框支转换梁 拟静力 抗震性能 

分 类 号：TU317[建筑科学—结构工程]