（江苏科技大学土木工程系,  镇江 212003）

［摘要］在现有门式刚架和预应力技术研究的基础上，提出全局布索预应力刚架体系，该结构相比索支承刚架增设了预应力隅撑系统。采用数值分析方法研究了全局布索预应力刚架体系在各种工况作用下的工作机理，并与门式刚架、索支承刚架的受力性能进行了对比研究。研究表明，索支部分对刚架在竖向荷载下的受力、变形性能影响较大，隅撑部分能有效改善刚架在风荷载作用下的受力和变形性能，并在一定程度上提高结构抗侧能力，因此全局布索预应力刚架体系适用于风荷载占较大比例的情况。

［关键词］门式刚架; 预应力; 索支承; 隅撑

中图分类号：TU394        文献标识码：A        文章编号：1002-848X(2014)12-0100-04

Study of prestressed steel frame structural system with overall cable-supported plan

Yang Siqi, Guo Junyuan, Tang Baijian

 (Civil Engineering Department, Jiangsu University of Science and Technology, Zhenjiang 212003, China)

Abstract: Based on the existing study of portal frame and prestressed technology, the prestressed  steel frame structural system with overall cable-supported plan was proposed and prestressed knee-braced structural system was added compared with prestressed cable-supported steel frame. By the numerical analysis method, the working mechanism of prestressed steel frame structural system with overall cable-supported plan under various working conditions was studied. The mechanism performance of the structure was compared with portal steel frame and prestressed cable-supported steel frame. The study shows that the cable-supported part has great influence on force and deformation properties of the steel frame under vertical load. The knee-braced part effectively improves force and deformation properties under the wind load and improves the lateral resistance performance of the steel frame to a certain extent. In conclusion, prestressed steel frame structural system with overall cable-supported plan is suitable for the structure supported a large proportion of wind load in the whole loads.

Keywords: portal steel frame; prestressed; cable-support; knee-brace

*住建部科技计划项目(2012-K2-28)。

作者简介：杨思琦，硕士研究生，Email：mulan_sunny@126.com。

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