EXPERIMENTAL STUDY AND NOLINEAR FINITE ELEMENT ANALYSIS OF NEW STEEL TRUSS COUPLING BEAMS
Adopting improved RC coupling beams in the research of coupled shear walls is effective for improving the energy dissipation capability, but it cannot solve other problems such as complicated distribution of reinforcements, difficulties of construction, and oversize stiffness degradation. In order to find the solution to these problems, new steel truss coupling beams were designed and studied in this thesis. Based on the pseudo-static test of 4 small span-depth ratio steel truss coupling beams, the author studied on the beams failure process and failure mode, analyzed their bearing capacity, hysteretic curve, ductility, energy dissipation, stiffness degradation and reasonable truss style, etc. Meanwhile, finite element method (FEM) analysis for evaluating the elasto-plastic performances was presented. The analytical and experimental results indicate that the steel beams with cross abdominal trusses have fairly good mechanisms and seismic behavior, and they have bigger shear-bearing capacity and better ductility and energy dissipation capability than those beams without cross abdominal trusses. Comparing with improved RC coupling beams, new steel truss coupling beams are superior in structural strength, ductility, and convenient construction.
steel truss coupling beam finite element analysis hysteretic curve
Qian Lin Zhi-Heng Deng Qiang Hu Zhi-Ming Pan Dong-Xiao Xu
College of Civil and Architectural Engineering, Guangxi University, Nanning 530004, P.R. China
国际会议
广州
英文
586-591
2009-11-28（万方平台首次上网日期，不代表论文的发表时间）