预应力钢带加固钢筋混凝土柱抗震性能试验研究  

EXPERIMENTAL STUDY ON REINFORCED CONCRETE COLUMN RETROFITTED BY PRESTRESSED STEEL STRIPS

作　　者：杨勇[1] 赵飞[1] 刘义[1] 薛建阳[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《工业建筑》2013年第2期45-48,共4页Industrial Construction

基　　金：西安市碑林区科技计划项目

摘　　要：提出一种预应力钢带加固钢筋混凝土柱的新技术,并通过预应力钢带加固高轴压比钢筋混凝土矩形截面柱的拟静力试验,对该预应力钢带加固方法进行初步研究。在试验中主要考察轴压比和预应力钢带间距两个主要参数对加固后钢筋混凝土矩形截面柱抗震性能的影响规律。结合试验研究结果,对加固试件和未加固的对比试件的滞回曲线、骨架曲线、位移延性、刚度退化和耗能性能等抗震性能指标进行了比较研究。研究结果表明,预应力钢带加固技术可以明显改善钢筋混凝土柱抗震性能,具有良好应用前景。A innovative technique for retrofitting reinforced concrete（RC） columns using prestressing steel strips（PSS） was introduced,and quasi-static tests of reinforced concrete column retrofitted by this new method under high axial-compression ratio were conducted.In the quasi-static test of these four retrofitted concrete column specimens,the influence on specimens＇ seismic performance of axial-compression ratio and spacing of the steel strips were studied.And based on the test results,the seismic performance indexes such as characteristic of resilience,skeleton curve,ductility coefficient and energy consumption were all analyzed and discussed.It could be concluded that this innovative retrofit technique could markedly improve the column＇s deformation ability and ductility,so as to improve the column seismic performance.

关 键 词：预应力钢带 加固 钢筋混凝土柱 抗震性能 试验研究 

分 类 号：TU375.3[建筑科学—结构工程] TU352.11