中文摘要：

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PSSCED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，PSSCED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．

英文摘要：

The hysteretic behavior of a new type of pre-pressed spring self-centering energy dissipation(PSSCED)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.