钢结构体系中节点耗能能力研究进展与关键技术

钢结构节点的耗能能力是节点性能的一种表现，对结构整体的抗震性能有着重要影响。综述了钢结构连接节点耗能机制的研究现状，以及对高强度螺栓连接的端板式柱梁节点进行了试验研究。结果表明：节点耗能能力可由不同部件提供；不同部件耗能能力的发挥和发挥程度，与相关的变形模式以及不同破坏模式的出现顺序直接相关。指出了在一些承重功能与耗能功能集于同一构件的结构体系中，充分利用节点耗能能力有助于提高结构整体的抗震性能。提出必须对不同类型的结构深入研究其节点的耗能机制、节点耗能与构件耗能的关系，以及相关的设计原则和构造措施。图4表1参51

Development and key technical issues on energy dissipation capacity of joints in steel structures

The joint performance of steel structures relates to its energy dissipation capacity which plays an important role in seismic behavior of steel structures. In this paper, recent research progress concerning energy dissipation mechanism of joint was summarized, and the main results of experimental study by the authors on high-strength bolt connected end plate joint were reported. The research shows that the components of joint possess different energy dissipation potentials, but the yielding, fracture or buckling failure modes and the sequence of occurrence of these modes determine whether the potential can be used or not, as well as to what extent the potential can be fulfilled. The seismic behavior can be improved if the energy dissipation capacities of joints can be utilized in a steel structure which integrates the loading capacity and energy dissipation capacity into same structural members. Further study is necessary on the mechanism of energy dissipation of joint, the relationship of joints and members, design principles and details.51Refs.In Chinese.