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| Design of Large-span Purlin for Platform Canopy without Post of Beijing Railway Station |
| WANG Yan-fang1 , LI Shu-liang2 |
| 1. The Third Railway Survey and Design Institute Group Corporation, Tianjin 300251，China; 2. Tianjin Railway Power Supply Section, Tianjin 300232, China |
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Abstract Research purposes： The posts of station platform will be installed between tracks, which can make the platform more open and bright and provide comforts to the passengers and reference to the similar works.
Research conclusions : Adopting the H-beam light solid consecutive purlin and long cantilever purlin structure are the effective ways to lower the structure weight and roof thickness, reduce deflection and inter-bending and realize the large-span. Providing horizontal support to purlin is the effective measure for guaranteeing purlin plane stability.
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Received: 23 April 2008
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[1] 汪一骏.钢结构设计手册[K]. 3版.北京:中国建筑工 业出版社，2004.
[2] GB 50017—2003，钢结构设计规范[S].
[3] CECS 102:2002，门式刚架轻型房屋钢结构技术规程[S].
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2008, Vol. 25 
