结构工程师2024，Vol.40Issue(3)：95-106,12.
装配式冷弯厚壁型钢半刚性梁-柱节点抗震性能试验研究
Experimental Study on Seismic Performance of Prefabricated Cold-formed Thick-walled Steel Semi-rigid Beam-column Joints
摘要
Abstract
The application of cold-formed steel in prefabricated structures has inherent advantages.In order to expand the range of use of cold-formed thick-walled steel structures and avoid its shortcomings,this paper designed six new layered assembled"cross-shaped"beam-column joints and conducted cyclic loading tests to investigate the failure mode,initial stiffness,skeleton curve,equivalent viscous damping coefficient,energy dissipation coefficient,secant stiffness,hysteresis curve and.strain distribution in key parts of the beam-column joints.The main conclusions were drawn as follows:Through the sliding of bolts and node plates,semi-rigid nodes have a certain energy dissipation capacity.Adding high-strength bolts can improve the bearing capacity initial stiffness and energy dissipation capacity of beam column joints as well as avoid bearing pressure on the bolt hole between the beam end and the connecting plate.Adding replaceable node flange plates has no significant impact on the failure mode of beam column joints,but significantly improves their bearing capacity,energy dissipation capacity,and initial stiffness.关键词
冷弯厚壁型钢/梁-柱节点/半刚性/初始刚度/耗能能力Key words
cold formed thick-walled steel/beam-column nodes/semi-rigid/initial stiffness/energy consumption capacity引用本文复制引用
李占鸿,李元齐,白雪,伍福炜,马福栋..装配式冷弯厚壁型钢半刚性梁-柱节点抗震性能试验研究[J].结构工程师,2024,40(3):95-106,12.基金项目
国家自然科学基金重点项目(51538002) （51538002）
