建筑结构学报2018，Vol.39Issue(2)：28-36,9.DOI:10.14006/j.jzjgxb.2018.02.003
高强度钢框架梁柱节点低周疲劳断裂性能试验研究
Experimental study on low-cycle fatigue fracture behavior of high strength steel beam-to-column connection
摘要
Abstract
Low-cycle fatigue fracture behavior of high strength steel (HSS) connection is crucial to its seismic performance.It is important for the seismic design of high strength steel structure and its application in seismic region.To investigate the low-cycle fatigue fracture behavior of HSS connections under rare earthquake,four beam-to-column connections of HSS moment resisting frame were tested under cyclic loads to simulate the earthquake induced loads.Two various welding access holes and four welding technologies were included.Specimens fracture failure modes and beating capacities were tested.Based on the test results,the influences of the welding technology details and welding access holes shape on the low-cycle fatigue fracture behavior were analyzed;the fracture mechanism of these connections were discussed;the effects of steel strength on connections fracture behavior were analyzed.The results indicate that the high strength steel beam-to-column connection can endure large plastic deformation before failure,if the improved construction details are employed and the flange weld quality is guaranteed.The fracture behavior related indices were obtained as well.关键词
高强度钢材/梁柱节点/低周疲劳/拟静力试验/断裂性能Key words
high strength steel/beam-column connection/low-cycle fatigue/quasi-static test/fracture behavior分类
建筑与水利引用本文复制引用
刘希月,王元清,石永久,谭清华..高强度钢框架梁柱节点低周疲劳断裂性能试验研究[J].建筑结构学报,2018,39(2):28-36,9.基金项目
国家自然科学基金项目(51378289,51678339,51708549). （51378289,51678339,51708549）
