欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为了揭示动力作用下型钢混凝土异形柱的粘结滑移性能，设计了17个试件进行低周反复荷载试验。通过在型钢翼缘外侧布置电阻应变片和滑移传感器，试验获得了粘结应力沿柱高的分布规律、水平荷载．滑移滞回曲线和骨架曲线；分析了荷载循环次数对粘结应力的影响，提出了粘结应力退化率的计算公式；并建立了型钢混凝土异形柱任意位置的粘结滑移本构关系。研究结果表明：型钢混凝土异形柱的粘结应力和滑移分别呈抛物线状、指数分布，柱肢上下端部和中部的粘结应力较大易发生滑移出现粘结失效，随着荷载循环次数的增加，粘结应力不断减小，滑移量不断增大，出现粘结退化现象，荷载．滑移滞回环也由加载初期较丰满逐渐变为Z形，出现明显的“捏拢”现象，整个粘结滑移破坏过程可分为无滑移阶段、弹性阶段、弹塑性阶段和塑性阶段四个阶段。
英文摘要：
In order to reveal the bond-slip behaviour between steel and concrete in SRC special-shaped columns under dynamic actions, 17 specimens were designed for experimental research. By the strain gauges and slip sensors embedded on the steel flange surface, the bond stress distribution along column, loading-slip hysteretic curves and skeleton curves were obtained. The influence of loading reversed times on bond stress was analyzed, calculation formula for bond degeneration was presented, and bond-slip constitutive relation in various places was established. Research results show that bond stress and exponential curve along columns. The maximum bond stress slip are respectively distributed in parabola and occurs in the upper, middle and lower of column, so these positions are vulnerable to bond failure. With the increasing of loading reversed time, bond stress decreased while slip increases gradually, indicating the occurring of bond degeneration. At the beginning of loading, loading-slip hysteretic curve is chubbiness, but it gradually becomes Z-shaped and pinched by the increasing of loading. The whole bond-slip failure can be divided into non-slip stage, elastic stage, elastic-plastic stage and plastic stage.
同期刊论文项目
同项目期刊论文
期刊信息
位置：