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为给出循环荷载作用下底板连接扭转性能的力学模型,萨勒诺大学对其进行了试验研究。首先对用于预测破坏前单调荷载作用下底板连接扭转性能的组件法的精确性进行评估。基于萨勒诺大学的试验结果,对欧洲规范3组件法给出的连接节点转动刚度、抗弯承载力、弯矩-转角曲线的精确性进行了评估。特别地,试验中先在弹性范围内对柱进行不同级别的轴向加载,对试件进行测试,继而加载至破坏。为了扩大影响底板连接节点性能的几何和力学参数的考察范围,不仅将组件法的预测结果与该文的试验结果进行了比较,而且还与其他科技文献中的试验结果进行了比较。
In order to give the mechanics model of the torsional behavior of the bottom plate under cyclic loading, Salerno University conducted an experimental study. First, the accuracy of the component method used to predict torsional behavior of floor connections under monotonic loading prior to failure was evaluated. Based on the test results of Salerno University, the rotational stiffness, flexural capacity and moment-moment curve accuracy of the connected joints given by the European Code 3-component method were evaluated. In particular, in the test, the column is first subjected to different levels of axial loading within the elastic range, the test piece is tested, and then the test piece is loaded to breakage. In order to expand the range of geometrical and mechanical parameters that affect the performance of the connecting joints of the backplane, not only the predicted results of the component method are compared with the experimental results of this paper, but also the results of the tests in other scientific and technical documents are compared.