型钢-再生混凝土界面黏结强度及其影响因素分析  

ANALYSIS OF INFLUENCE FACTORS AND BOND STRENGTH OF STEEL-RECYCLED AGGREGATE CONCRETE INTERFACE

作　　者：陈宗平[1] 陈宇良[1] 郑华海[2] 薛建阳[3] 

机构地区：[1]广西大学土木建筑工程学院,南宁530004 [2]同济大学建筑工程系,上海200092 [3]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9期1-6,共6页Industrial Construction

基　　金：国家自然科学基金项目(50908057);‘八桂学者’建设工程专项经费资助;广西自然科学基金项目(2012GXNSFAA053203;2013GXNSFDA019025);广西科技攻关项目(桂科攻12118023-3);广西理工科学实验中心重点项目(LGZX201102)

摘　　要：为研究各种再生粗骨料取代率下型钢-再生混凝土界面黏结性能,设计11个不同取代率型钢再生混凝土试件进行推出试验。通过试验,观察试件的破坏过程和裂缝发展形态,获取荷载-滑移全过程曲线以及各特征点参数;基于试验数据,分别从黏结强度、滑移特性、界面耗能、黏结抗剪刚度、损伤等角度分析取代率对型钢-再生混凝土界面黏结性能的影响。最后,对11个试件的黏结-滑移(τ-s)曲线进行拟合,得到了型钢再生混凝土界面黏结滑移本构方程,其计算值与试验实测值吻合较好。In order to study the influence of recycled coarse aggregate replacement rate on the bond behavior of steel reiforced recycled aggregate concrete, 11 specimens with different replacement rates were designed to do push out test. The failure patterns were observed and the characteristic point parameters on load-slip curves were obtained by the push-out test. Based on the experimental data, the influence of replacement rates on steel reinforced recycled concrete bonding performance was analysed such as the bonding strength, slip properties, energy dissipation, interface bonding shear stiffness and damage. Finally, the 11 specimens 7＂- s curves were fitted, and the constitutive equation of the interface bond-slip was got, whose Values had a good agreement with the measured ones.

关 键 词：型钢 再生混凝土 取代率 黏结强度 

分 类 号：TU398.9[建筑科学—结构工程]