腹板摩擦式钢框架节点震后可更换性能的试验研究  

Experimental study on post-earthquake replaceable of steel frame joint with friction bolts on web plate

作　　者：李天祺[1] 邹昀[1] 蔡鑫 郑黎君 丁杰 赵桃干 LI Tianqi;ZOU Yun;CAI Xin;ZHENG Lijun;DING Jie;ZHAO Taogan(School of Environment and Civil Engineering, Jiangnan University,Wuxi 214122, China)

机构地区：[1]江南大学环境与土木工程学院,江苏无锡214122

出　　处：《世界地震工程》2018年第2期140-146,共7页World Earthquake Engineering

基　　金：国家自然科学基金课题(51378240);2015年江苏省建筑节能与建筑产业现代化科技支撑项目;2016年江苏省建筑产业现代化示范基地项目

摘　　要：主要针对梁腹板带有摩擦耗能螺栓的自复位钢框架节点结构进行抗震性能和可更换性能的试验研究,探讨该类节点在往复荷载作用下的滞回性能以及节点域的变形特征。在参数选型的基础上,对5组钢框架节点试件进行了低周反复荷载作用下的拟静力试验,其中:4组试件具有自复位能力,分析了各试件的承载力、刚度、耗能性能和滞回特性等性能。综合研究结果表明:所提出的拼接节点能够利用摩擦螺栓的滑移提高节点的耗能能力,有效减少梁和柱主体构件的损伤,同时预应力筋提供了结构的自复位能力。试验结果表明:在地震作用之后,通过更换腹板及摩擦螺栓可以使结构的承载能力和耗能性能与震前基本一致,从而实现结构功能的快速恢复。The seismic performance and replaceable of self-centering steel frame joints with friction energy dissipation bolts were studied. The hysteretic behavior of this jointand the deformation characteristics of joint region under cyclic loading were discussed. On the basis of parameter selection, four specimens with self-centering capacity were made and pseudo-static test under low cyclic loading was conducted to analyze their bearing capacity, stiffness, energy dissipation ability, hysteretic behavior and other properties. The research show that the proposed splicejoints can improve the energy dissipation ability of the structure by using the slide of the friction bolts, and effectively reduce the damage of beams and columns. The pre-stressed reinforcement provides the self-centering capacity of the structure. Experimental results show that the bearing capacity and energy dissipation capacity of the joint can be ba- sically restored by replacing web plate and friction bolts after the earthquake, so as to achieve the quick restoration of the structural function.

关 键 词：钢框架节点 摩擦耗能螺栓 抗震能力 可更换性能 自复位性能 

分 类 号：TU391[建筑科学—结构工程]