丰  磊，郭正兴，罗  斌
(东南大学土木工程学院，南京210096)

[摘要] 针对上海2010世博会主题馆张弦桁架预应力拉索工程，研究了拉索张拉施工分析及施工控制方法；讨论了利用应力松弛法（倒拆法）确定施工张拉力的方法、张拉施工顺序，阐述了施工控制要点。
[关键词] 预应力；张弦梁；施工分析

Construction Analysis of Prestressed Cable of Beam String Structure in Shanghai Exp0 2010 Theme Pavilion
Feng Lei, Guo Zhengxing, Luo Bin
(College of Civil Engineering of Southeast University, Nanjing 210096, China)

Abstract: Combining with the course of string beam construction in Shanghai Expo 2010 Theme Pavilion, authors study the cable tension analysis and construction control method. Using stress relaxation method, authors determine the construction strength and construction sequence, and present the construction control points.
Keywords: prestress; string beam; construction analysis