直接基于位移設計的高強鋼組合K形偏心支撐鋼框架的抗震性能研究
發(fā)布時間:2018-05-16 02:18
本文選題:偏心支撐鋼框架 + 高強鋼 ; 參考:《地震工程學報》2016年05期
【摘要】:K形高強鋼組合偏心支撐(K-HSS-EBF)是指耗能連梁和支撐采用Q345鋼,而框架梁、框架柱采用高強度鋼(如Q460)。為研究其在罕遇地震作用下的抗震性能,在試驗研究的基礎上,采用直接基于位移的抗震設計方法設計了5層、8層和12層算例,分別進行靜力推覆分析和動力彈塑性分析,研究高強鋼組合偏心支撐鋼框架在罕遇地震作用下層間側移分布和破壞模式。研究結果表明:直接基于位移的抗震設計方法設計的算例在罕遇地震作用下,結構的層間側移滿足我國現(xiàn)行抗震規(guī)范的要求,結構呈理想的漸進式梁鉸屈服機構,并證明該設計方法的合理性和可靠性。
[Abstract]:K-HSS-EBF (K-HSS-EBF) means that the energy dissipation beam and the bracing are Q345 steel, while the frame beam and frame column adopt high strength steel (such as Q460). In order to study its seismic performance under the action of rare earthquake, based on the experimental study, five stories 8 stories and 12 stories were designed by direct displacement-based seismic design method, and the static force nappe analysis and dynamic elastoplastic analysis were carried out, respectively. The lateral distribution and failure mode of eccentrically braced steel frame with high strength steel under rare earthquake are studied. The results show that the seismic design method based on displacement can meet the requirements of the current seismic code in our country, and the structure is an ideal progressive beam hinge yield mechanism. The rationality and reliability of the design method are proved.
【作者單位】: 大連理工大學建設工程學部;西安建筑科技大學土木工程學院;中國建筑標準設計研究院有限公司;
【基金】:“十二五“科技支撐計劃課題(2013BAJ10B03-0)
【分類號】:TU352.11;TU391
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