Seismic design of steel building with H-section columns and energy absorbing elements

本研究的目的是试验研究具有h型柱和半刚性梁端连接的钢框架的结构性能。本文的研究将有助于促进h型钢结构建筑抗震设计的力学和经济合理性。本研究的结论总结如下：1。通过拉伸加载试验，对法兰- t型和腹板- t型拉伸连接的结构性能进行了试验研究。通过塑性分析可以很好地估计观察到的节点的全塑性强度和极限强度。通过循环加载试验，研究了法兰-劈开- t型半刚性弯矩连接组合的结构性能。亚组合试样中的拉伸连接行为与拉伸试样中的拉伸连接行为吻合较好；这表明，利用对法兰-劈开- t型半刚性弯矩连接的了解，可以预测钢框架的结构性能。在组合加载试验中还观察到，面板区域的平板和法兰处的角构件用高强度螺栓连接，对h型钢柱的板构件具有良好的面外加固效果。通过循环加载试验，研究了网裂- t弯矩连接子组合的结构性能。亚组合试样中的拉伸连接行为与拉伸试样中的拉伸连接行为吻合较好；这是相同的法兰-分裂- t连接。

The purpose of this research is to experimentally investigate structural behavior of a steel framework with H-section columns and semi-rigid beam-end connections. This research will help to promote mechanically and economically rational seisimic design of steel buildings using H-section columns. The conclusions of this research are summarized as follows.1.Structural behaviors of flange-split-T and web-split-T tensile connections are experimentally investigated by tensile loading tests. Observed full plastic strength and ultimate strength of the connections can be estimated well by plastic analysis.2.Structural behavior of a subassemblage with flange-split-T semi-rigid moment connections is experimentally investigated by cyclic loading tests. The tensile connection behavior in the subassemblage specimen is in good agreement with that in the tensile specimens ; this indicates that the structural behavior of steel frameworks with the flange-split-T semi-rigid moment connections can be predicted by using the knowledge about the flange-split-T tensile connections. It is also observed at the subassemblage loading test that flat plates in a panel zone and angle members at the flange attached with high-strength bolts show good out-of-plane reinforcement effect on plate elements in the H-section columns.3.Stmctural behavior of a subassemblage with web-split-T moment connections is experimentally investigated by cyclic loading test. The tensile connection behavior in the subassemblage specimen is in good agreement with that in the tensile specimens; this is the same as the flange-split-T connections.