Seismic response of circular hollow section braces with slotted end connections
During severe earthquakes, brace members supply lateral resistance to structural frames while also dissipating energy through cyclic inelastic deformations. However, this performance may be negated by a sudden fracture at an end connection, or at the brace mid-length. As a result, the use of a structural section that shows excellent behaviour under such loading is invaluable and Circular Hollow Sections (CHS) have shown promising characteristics. However, the lack of a simple end connection detail has limited their use to date. A novel connection detail that is capable of preventing premature brittle failure at the brace end, and thus turning all attention to the brace mid-length, is presented here. The capacity of this detail has been previously demonstrated by means of two large-scale specimen tests under pseudo-dynamic loading. A Finite Element (FE) analysis of these connections has been undertaken and is presented herein. Results from the numerical analysis compared well with the experimental tests. A failure criterion is also included as a means of success-fully predicting the location and time of crack initiation, validating the use of the FE models for a subsequent parametric analysis.
G.Martinez-Saucedo R.Tremblay J.A.Packer
Ecole Polytechnique, Montreal, Canada University of Toronto, Toronto, Canada
国际会议
第12届钢管结构国际学术会议(The 12th International Symposium on Tubular Structures)
上海
英文
227-233
2008-10-08（万方平台首次上网日期，不代表论文的发表时间）