In order to improve the problems of existing metal dampers,such as uneven force,low ductility,and difficulty in replacing them after earthquakes,an all sections yielding simultaneously energy dissipating steel bar damper is proposed to improve the seismic performance of building structures.The damper uses energy-dissipating steel bars as energy-consuming components.After the cross-section design,the energy-dissipating steel bars can achieve simultaneous yield of all sections,which can greatly improve the energy dissipation capacity and ductility performance of the steel bars,and facilitate post-earthquake replacement.Numerical simulations of the dampers were carried out using the finite element software ABAQUS to verify the design rationality of the dampers and to investigate the effect of the mechanical properties of the dampers on the radius,quantity and length of the steel rods.The results show that the new all sections yielding energy-dissipating steel bar damper is reasonably designed,with a full hysteresis curve and a strong energy dissipation capacity.The mechanical properties of the dampers are significantly influenced by the radius,quantity and length of the bars.The results show that the energy-dissipating fixed steel bar can realize full-section yielding,full hysteresis curve,and stable and superior performance.The radius,length and number of energy-consuming steel rods have significant effects on the performance of the damper.The energy dissipation performance of the damper is directly proportional to the radius and number of steel bars,and inversely proportional to the length of steel bars.
关键词
消能减震/耗能钢棒/金属阻尼器/抗震性能
Key words
energy dissipation damping/energy-dissipating steel bar/metal damper/seismic performance
维普
万方数据