论文部分内容阅读
试验测试了循环荷载作用下的一组8个足尺的钢梁柱端板连接弯矩。研究的参数有端板厚度、螺钉直径、外伸端板加劲肋、柱加劲肋、齐平/外伸端板的类型。试验结果反映在弯矩能力曲线、转角刚度、转动能力和滞回曲线上。试验结果显示:延伸的端板连接有足够的强度、节点转动刚度、延性和抗震结构中要求的耗能能力。基于试验结果和分析,提出了在钢结构抗震设计中对端板连接弯矩的一些详细要求,为保证在地震作用下端板连接能够提供足够的转动能力和耗能能力,并使最终破坏模式为延性破坏,推荐了三种失效模式和相应的抵抗能力。为考虑端板连接向两侧延伸,本文还提出了一种双线性的运动硬化弯矩-转角(M-R)滞回模型。
The test tested the bending moment of a group of 8 full-length steel beam column end plates under cyclic loading. The parameters studied are end plate thickness, screw diameter, overhanging end plate stiffeners, column stiffeners, flush / overhanging end plate types. The test results are reflected in the bending moment capacity curve, the corner stiffness, the turning ability and the hysteresis curve. The test results show that the extended end plate connection has sufficient strength, node rotation stiffness, ductility and energy dissipation capability required in the seismic structure. Based on the test results and analysis, some detailed requirements on the bending moment of the end plate in the seismic design of steel structures are put forward. In order to ensure that the end plate connection can provide sufficient rotation capacity and energy dissipation capacity under earthquake action, the final failure mode is Ductile damage, recommended three failure modes and the corresponding resistance. In order to consider the extension of the end plate to both sides, a bilinear kinematic hardening moment-rotation (M-R) hysteresis model is also proposed.