RC框架节点开角缝抗震性能拟静力试验研究
发布时间：2018-07-23 08:30
【摘要】：为了研究RC框架节点设置角缝后的抗震性能,对2个不同试件进行了试验研究,将2个试件在循环反复荷载下的响应进行了对比。根据试验分析了2个试件在地震作用下的破坏特征、滞回特性、骨架曲线、延性及刚度退化曲线等指标。结果表明:随着加载位移的不断增加,开角缝试件梁中应力要高于柱中应力,而普通试件却相反;开角缝试件滞回曲线的形状比较饱满,塑形变形能力比较强,可吸收较多的地震能量,而普通试件滞回曲线的形状不饱满,呈现反S形,具有"捏拢"效应且受到了滑移影响,延性和耗能能力均较差;开角缝试件的受压、受拉延性系数与普通试件相比分别提高了25.90%与22.77%;2个试件刚度都有退化但普通试件刚度退化更为明显。
[Abstract]:In order to study the seismic behavior of RC frame joints with angle joints, two different specimens were tested, and the responses of two specimens under cyclic loading were compared. According to the tests, the failure characteristics, hysteretic characteristics, skeleton curves, ductility and stiffness degradation curves of the two specimens under earthquake action are analyzed. The results show that with the increasing of loading displacement, the stress in the beam is higher than that in the column, but the common specimen is opposite, the shape of hysteretic curve is full and the deformation ability is stronger. More seismic energy can be absorbed, but the hysteretic curve of the ordinary specimen is not full, it is anti-S-shaped, it has the effect of "pinch" and is affected by slip, and its ductility and energy dissipation are both poor. The tensile ductility coefficient is 25.90% and 22.77% higher than that of the ordinary specimen, and the stiffness of the two specimens is degraded, but the stiffness of the ordinary specimen is more obvious.
【作者单位】： 华北理工大学建筑工程学院;河北省地震工程研究中心;
【基金】：国家自然科学基金项目(51078124)
【分类号】：TU375.4;TU352.11
[Abstract]:In order to study the seismic behavior of RC frame joints with angle joints, two different specimens were tested, and the responses of two specimens under cyclic loading were compared. According to the tests, the failure characteristics, hysteretic characteristics, skeleton curves, ductility and stiffness degradation curves of the two specimens under earthquake action are analyzed. The results show that with the increasing of loading displacement, the stress in the beam is higher than that in the column, but the common specimen is opposite, the shape of hysteretic curve is full and the deformation ability is stronger. More seismic energy can be absorbed, but the hysteretic curve of the ordinary specimen is not full, it is anti-S-shaped, it has the effect of "pinch" and is affected by slip, and its ductility and energy dissipation are both poor. The tensile ductility coefficient is 25.90% and 22.77% higher than that of the ordinary specimen, and the stiffness of the two specimens is degraded, but the stiffness of the ordinary specimen is more obvious.
【作者单位】： 华北理工大学建筑工程学院;河北省地震工程研究中心;
【基金】：国家自然科学基金项目(51078124)
【分类号】：TU375.4;TU352.11
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