基于新型全螺栓连接方钢管尺寸对节点的抗震性能研究

Analysis on Effect of Section Size of Square Steel Tube on Seismic Behavior of New Type All-Bolt Joint

新型全螺栓梁柱连接节点具有很高的延性和承载能力,随着相关实验和理论研究的深入,影响新型全螺栓连接结构抗震性能的因素成为新型全螺栓结构推广和研究的关键问题。为了研究不同方钢管尺寸对新型全螺栓梁柱节点的影响,对两个不同方钢管尺寸运用新型全螺栓连接的十字节点试件进行拟静力试验研究。通过试验研究,得到方钢管尺寸不同时梁柱节点的滞回曲线、骨架曲线、能量耗散曲线等,通过对不同曲线和数据深入分析研究。结果表明:方钢管尺寸较大试件的滞回曲线比较饱满,耗能能力优越,且两组试件的位移延性比均超过4. 0,表明采用新型全螺栓连接的试件具有良好的延性。

The connection mode of new single-side full bolt joint’s beam-column joint has higher ductility performance and bearing capacity. With the development of related experiment and theoretical research,the factor of effecting new full threaded bolt has became the important problem of new full bolt joint’s popularize and study. In order to study the influence of different square steel tube on new full threaded bolt’s beam-column joint,a quasi-static test of cruciform specimen that two different size rectangular steel tubes is connected by new type all-bolt is carriedout. Though experimental study,the beam-column joint’s hysteretic curve,skeleton curve,energy consumption curve etc are derived. Analyzing different curve and date deeply,it shows that the hysteretic curve of the higher size of square steel tube specimen is fuller,the energy dissipation capacity is more superiority,and the displacement ductility ratio of two specimens are beyond 4. 0,so the specimen of using new full threaded bolt has good ductility.