钢管混凝土柱核心混凝土膨胀性对钢管与混凝土黏结性能的影响  

Influence of Core Concrete Expansibility in Concrete-filled Steel Tube on Bond Behavior Between Steel Tube and Core Concrete

作　　者：张岩 李勇[2] 路一 ZHANG Yan;LI Yong;LU Yi(Department of Economics and Management,Sifang College of Shijiazhuang Tiedao University,Shijiazhuang,Hebei 051132,China;School of Civil Engineering,Huanghuai University,Zhumadian,He＇nan 463000,China;Department of Ship Engineering,Weihai Ocean Vocational College,Rongcheng,Shandong 264300,China)

机构地区：[1]石家庄铁道大学四方学院经济管理系,河北石家庄051132 [2]黄淮学院建筑工程学院,河南驻马店463000 [3]威海海洋职业学院船舶工程系,山东荣成264300

出　　处：《施工技术》2018年第21期75-78,共4页Construction Technology

基　　金：山东省高校科技计划项目(J16LJ55)

摘　　要：钢管与混凝土之间的黏结性能是保证钢管混凝土结构或构件共同工作的基础,但目前的试验中,极少考虑核心混凝土膨胀性。在保证各试件其他条件相同的情况下,在各试件的核心混凝土中掺入不同含量的膨胀剂,实现核心混凝土的不同膨胀性。通过试验得到各试件的黏结滑移相关数据,绘制荷载-滑移曲线,以此研究核心混凝土的膨胀性对钢管混凝土黏结性能的影响。研究表明,核心混凝土的膨胀性对钢管混凝土界面黏结性能影响较大,在一定范围内,核心混凝土膨胀性越大,钢管混凝土界面黏结性能越好。At present, the interracial bond behavior of concrete filled steel tube has been paid more and more attention, but in the introduction experiment, the influence factor of the expansion of core concrete is seldom considered. In order to study the concrete expansibility influence on the bonding properties of concrete filled steel tube, the other conditions of the specimens are the same, but different content of expansive agent is mixed to complete different expansibility of core concrete. The load-slip curves of the specimens are plotted to study the effect of expansibility of core concrete on the bond properties of concrete filled steel tubular （CFST）. The results show that the expansibility of core concrete has a great influence on the interracial bonding performance of concrete filled steel tubular. In a certain range, the greater the expansibility of core concrete, the better the interracial bonding performance of concrete filled steel tubular.

关 键 词：钢管混凝土 柱 膨胀性 黏结性能 试验 研究 

分 类 号：TU375[建筑科学—结构工程]