钢框架梁柱节点恢复力模型的研究

为了研究高层钢结构梁柱节点的抗震性能 ,对钢框架节点在低周反复荷载作用下的性能进行了足尺模型试验研究。在试验研究的基础上 ,考虑了节点延性、耗能性能和强度、刚度退化等影响 ,建立了钢框架梁柱节点的恢复力模型 ,计算结果与试验结果吻合良好。建立的模型对高层钢结构的抗震设计具有较好的参考价值

STUDIES ON RESTORING FORCE MODELS OF BEAM-COLUMN CONNECTIONS OF STEEL FRAMES

In order to address the seismic performance of beam-column connections used in high-rising buildings, the experiments were conducted on full-scale specimens of beam-column connections subjected to reversed cyclic loading. Based on the test results and analysis, restoring force models of beam-column connections were established with consideration of the degree of ductility, the capacity of energy dissipation, the deterioration of stiffness and strength of the specimens. Good agreements between analytical results and experimental results were found. The proposed models can be applied to seismic analyses and the design of welded flange-bolted web connections of steel moment frames.