蘇州太湖國際會議中心大跨度鋼桁架結構設計
戴雅萍，袁雪芬，張杜，廉浩良
- 摘 要
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［摘要］在大跨度鋼桁架結構設計中，采用倒放H型鋼能夠充分發(fā)揮桁架承受軸向力的優(yōu)勢；采用變高度桁架，在優(yōu)化結構受力性能的同時滿足建筑退臺高差的要求。詳細介紹了蘇州太湖國際會議中心層2和層4鋼桁架結構設計全過程，分析了大跨度鋼桁架結構變形對支承型鋼柱及整體結構的影響，并提出了鋼桁架支承型鋼柱及后連框架梁應考慮水平力對其不利影響。支承型鋼柱按考慮桁架變形后實際內(nèi)力復核配筋，后連框架梁按拉彎構件計算配筋，且構造上將上部縱筋全部貫通，以確保關鍵構件結構安全。
［關鍵詞］大跨度鋼桁架；變高度；結構變形；水平力中圖分類號：TU393-3文獻標識碼：A文章編號：1002-848X(2012)01-0001-05Structural design on large-span steel truss of Taihu International Conference Center in SuzhouDai Yaping, Yuan Xuefen, Zhang Du, Lian Haoliang（Suzhou Institute of Architectural Design Co., Ltd., Suzhou 215021, China）Abstract:H-shaped steel by upside down can be adopted to make full use of the advantage of steel truss which can bear axial forces in the design of large-span steel truss. Using the truss with variable height could optimize the mechanical performance of the structure while meeting the requirements of receded step with different height. The steel truss in the second and the fourth floor of Taihu International Conference Center in Suzhou was introduced in detail. The effects on the steel reinforced concrete columns and the whole structure caused by the deformation of large-span steel truss were analyzed. Also it brought forward that the horizontal forces must be considered while designing the steel reinforced concrete columns which support the steel trusses and the frame beams connected to them. The reinforcement of steel reinforced concrete columns which support the truss are checked by the effect of the deformation of trusses. The reinforcement of frame beams connected to the truss are calculated as stretch bending elements, and the bars on the top are running through in constructional detail to ensure the structural safety of the key components.Keywords:large-span steel truss; variable height; structural deformation; horizontal force作者簡介：戴雅萍，教授級高級工程師，一級注冊結構工程師，結構總工程師，Email:yaping.dai@siad.c.com。參考文獻［1］GB 50011—2001建筑抗震設計規(guī)范［S］.2008年版.北京:中國建筑工業(yè)出版社,2008.［2］GB 50017—2003 鋼結構設計規(guī)范［S］.北京:中國計劃出版社,2003.［3］戴雅萍，趙宏康，陳磊.蘇州國際博覽中心卸貨區(qū)鋼結構桁架設計［J］.建筑結構,2008,38(12):59-61.［4］陳紹蕃.鋼結構設計原理［M］.2版.北京：中國建筑工業(yè)出版社，1998.
