FRACTURE ANALYSIS OF BEAM-COLUMN CONNECTIONS BASED ON GENERALIZED STRENGTH MODEL
In order to study fracture mechanism of beam-column connection, conventional joints and haunch joints (repaired with fractured beam flange and enhanced with haunches and ribs of conventional joints) were tested. Test results revealed that the conventional joints and the haunch joints fractured at beam flange and haunch flange near butt weld to columns, respectively. Plastic rotation of the haunch joints exceeded the minimum limit of 0.03 radian suggested by FEMA 350, but those of the conventional joints did not. Numericalsimulation and fracture analysis of beam-column connections were done based on ellipsoidal fracturecriterion of constructional steel. Analysis results revealed that beam/haunch flange near butt weld fractured when the eilipsoidal fracture function reached critical value of constructional steel. The ellipsoidal fracture function could accurately evaluate fracture of beam-column connections.
Constructional steel Beam-column connections Fracture mechanism Ellipsoidal fracture criterion
Wan-Zhen Wang Ming-Zhou Su Yu-Ping Sun Qiang Gu Jian Xu
School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730055,P. R. China School of Civil Engineering, Xian University of Architecture and Technology, Xian 730055,P.R. Chin School of Civil Engineering, Suzhou University of Science & Technology, Suzhou 215011,P.R. China School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, P.R. Chin
国际会议
第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)
长沙
英文
172-176
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）