Posttensioned energy dissipating connections for moment-resisting steel frames
Posttensioned energy dissipating connections for moment-resisting steel frames
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DOI：
10.1061/(asce)0733-9445(2002)128:9(1111
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发表时间：
2002-09-01
期刊：
影响因子：
--
通讯作者：
Folz, B
中科院分区：
文献类型：
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作者：
Christopoulos, C;Filiatrault, A;Folz, B
对钢框架后张耗能连接的抗震性能进行了理论分析和试验研究。PTED连接采用后张高强度钢筋，以提供自对中响应，沿着的是能够在轴向拉伸和压缩中屈服的耗能钢筋。分析研究涉及一个等效的迭代截面分析程序的发展，以预测的PTED连接的力矩-旋转关系。基于此分析模型，一个简单的设计程序PTED连接。在试验研究中，对两个耗能杆进行了循环分量试验，并对一个大型外部梁柱PTED连接进行了循环试验。试验结果表明，PTED试件能够承受较大的非弹性变形，梁或柱没有任何损伤，也没有残余位移。所提出的分析模型和设计方法也验证了对实验结果。
The seismic performance of a posttensioned energy dissipating (PTED) connection for steel frames is investigated analytically and experimentally. The PTED connection incorporates posttensioned high-strength bars to provide a self-centering response along with energy dissipating bars that are able to yield in axial tension and compression. The analytical study involves the development of an equivalent iterative sectional analysis procedure to predict the moment-rotation relationship of the PTED connection. Based on this analytical model, a simple design procedure for PTED connections is described. In the experimental study, a cyclic component test was performed on two energy dissipating bars and a cyclic test was conducted on a large-scale exterior beam-to-column PTED connection. The results of the tests show that the PTED test specimen was able to undergo large inelastic deformations without any damage in the beam or column and without residual drift. The proposed analytical model and design procedure were also validated against the experimental results.