(北京市建筑设计研究院，北京 100045)

［摘要］介绍了某剧院屋面结构选型和大跨度后张有粘结预应力井字梁的详细设计过程。讨论了预应力度、预应力筋束形和支承主梁抗扭等几个问题，并给出实际工程中的处理办法。针对大跨度预应力井字梁介绍了一些行之有效的构造措施，可供类似工程参考。

［关键词］剧院建筑；屋面结构；预应力井字梁；设计

Design and analysis of long-span post-tensioned bonded prestressed cross-beams of a theater

Huang Guohui, Wang Zhigang(Beijing Institute of Architectural Design, Beijing 100045, China)

Abstract:The detailed design process of floor structure and long-span post-tensioned bonded prestressed cross-beams is introduced. Some problems such as degree of prestress, tendon shape and torsion resistance of side main beam are discussed and the treating methods are put forward. Some construction measures for long-span prestressed cross-beams are suggested, and the design experience can be referred to similar engineering.

Keywords:theater architecture; roof structure; prestressed cross-beams; design

作者简介：黄国辉，Email:huanggh@biad.com.cn。

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