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(1 中國建筑標準設計研究院, 北京 100044; 2 山東大學, 濟南 250061)
[摘要]新頒布的《建筑抗震設計規(guī)范》(GB 50011—2010)在“鋼框架結構的抗震構造措施”中所推薦的框架梁與柱的現(xiàn)場連接和框架柱與梁懸臂段的連接,是屬于弱連接構造而非強連接構造。分析了造成差錯的根本原因,指出了規(guī)范中推薦的連接構造和采用的極限承載力計算公式均存在缺陷。用極限承載力計算方法驗證了規(guī)范推薦的上述連接抗力不足,存在安全隱患。據此,提出了加強連接的構造做法及其相應的計算建議。
[關鍵詞]抗震設計;鋼結構;抗側力;屈服強度;抗拉強度;強屈比;連接的極限承載力
中圖分類號:TU391文獻標識碼:A文章編號:1002-848X(2012)02-0107-06
Safety problems-of lateral force resistance joint construction about multi-story and tall steel structures in Code for seismic design of buildings
Liu Qixiang1, Chen Qinglai2,Chen Youfan1(1 China Institute of Building Standard Design & Research, Beijing 100044,China; 2 Shandong University, Jinan 250061,China )
Abstract: The frame beam and column-connections and frame column and cantilever beam connections recommended by-Code for seismic design of buildings (GB 50011—2010), are not strong but weak joints-Through using the ultimate bearing capacity calculation method, it is verified that the resistance force of the joints above-mentioned is insufficiency and exists hidden safety danger. The fundamental reasons for-errors were analyzed. The connection structure and the formula of the ultimate bearing capacity calculation method recommended by the code have faults. The method of enhancing connect structure and the corresponding calculating suggestion are put forward.
Keywords:seismic design; steel structure; lateral force resistance; yield strength; tensile strength; ratio of strength and yield; ultimate bearing capacity of joint
作者簡介:劉其祥,教授級高級工程師,Email:lqx3960@sina.com。
參考文獻
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