高温后钢筋混凝土粘结性能试验研究  

EXPERIMENTAL INVESTIGATION ON BOND PERFORMANCE BETWEEN REINFORCEMENT AND CONCRETE AFTER FIRE

作　　者：吴昊[1] 陈礼刚[1] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033

出　　处：《工业建筑》2010年第2期105-108,共4页Industrial Construction

基　　金：国家自然科学基金资助项目(50578078);青岛理工大学博士基金资助项目(2007-035)

摘　　要：为了提高建筑物火灾后加固设计的可靠性,探究高温后钢筋混凝土的粘结性能成为过火后钢筋混凝土性能研究的关键。通过中心拔出试验,研究了经历不同温度后钢筋和混凝土粘结性能的变化情况,得到不同温度下的τ-s曲线,并给出温度因素影响下的粘结应力-滑移本构方程。In order to raise the reliability of the strengthening design of a building after a fire, the exploration of the bond performance of a reinforce concrete after a fire becomes the key to the study on the behavior of the reinforced concrete after a fire. It is studies the changes in the bond performance between rebar and concrete under different temperatures by way of a central pull-out test. The rebar and the concrete cementing force＇ s τ - s curves under different temperatures are obtained and the bond-slip constitutive equation under temperature influence is also given.

关 键 词：高温后 钢筋混凝土 粘结力 τ-s曲线 本构方程 

分 类 号：TU375[建筑科学—结构工程] TU458.3