自恢复耗能支撑框架结构滞回特性模拟分析
Simulation of Hysteretic Behavior of Self-Centering Energy Dissipation Braced Frame Structure

介绍了新型预压弹簧自恢复耗能(PS-SCED)支撑在低周反复荷载作用下的滞回特性, 并对采用新型PS-SCED支撑与普通支撑的单层单榀框架结构的抗震性能进行了对比分析．结果表明, PS-SCED支撑框架结构在动力荷载作用下可展现出稳定的旗形滞回曲线, 具备良好的耗能能力及自恢复性能．与普通支撑框架结构相比, PS-SCED支撑框架结构承载能力至少提高44% , 累积滞回耗能能力提高20% , 残余变形角减小64% , 故PS-SCED支撑可有效提高结构的整体抗震性能．
The hysteretic behavior of a new type of pre-pressed spring self-centering energy dissipation(PS-SCED)brace under the low cyclic reversed loading is described，and，taking a single-story single-span frame structure as a numerical example，comparisons of the seismic performances between structure with PS-SCED braces and structure with common braces are conducted. Results indicate that the PS-SCED braced frame structure exhibits stable flag-shaped hysteretic performances with good energy dissipation capacity and self-centering behavior under dynamic load. The load-bearing capacity has increased by 44% ，the accumulated energy dissipation capacity has increased by 20% and the residual drift ratio has dropped by 64% as compared with the common braced structure. The overall seismic performance of structure has been improved effectively by PS-SCED braces