半刚性钢-混凝土组合节点抗震性能研究概述

半刚性节点具有良好的塑性,可以增加结构的阻尼,延长结构自振周期,减小震幅,从而降低震害,是抗震的理想选择之一.由于半刚性组合节点的研究资料相对较少,人们对其受力性能和破坏机理的认识还远远不足,为了避免和减小地震灾害,分析半刚性钢-混凝土梁柱节点破坏机理并提出抗震设计对策和建议,具有重要的理论和工程意义.笔者介绍了国际上对半刚性组合节点抗震性能的研究状况和近年来取得的主要研究成果,探讨了地震荷载作用下组合节点力学模型的建立,指出了半刚性组合节点抗震性能研究存在的一些问题以及今后的研究重点.

Overview of Research on Seismic Behavior of Semi-Rigid Composite Joints

The problem of connection seismic behaviors is of great importance for structure field, and the foreground of study and application is very wide. The semi-rigid connections have definite flexibility, which can increase damp, prolong periods, and decease the swing of structure, so as to reduce the damage, and it is one of the best choices for resisting earthquakes. Since experiments on this kind of composite joints are very limited, the cognition of the damage mechanism of this type of joints was rather inadequate. To avoid casualties and decrease the loss in the future, the analysis of and response to the damage mechanism of the semi-rigid composite joints under seismic load is significant both in theory and practice. The research on seismic behavior of semi-rigid composite joints abroad in resent years is reviewed in this paper. The mechanical models of semi-rigid composite joints under cyclic loads are discussed and some problems have been pointed out.