国内外门式刚架稳定设计方法简述

郁银泉; 童根树; 王喆

doi:10.13206/j.gjgS26081445

国内外门式刚架稳定设计方法简述

doi: 10.13206/j.gjgS26081445

1. 中国建筑标准设计研究院有限公司, 北京 100048;
2. 浙江大学高性能结构研究所, 杭州 310058

详细信息

作者简介:
郁银泉，教授级高级工程师，主要从事钢结构及结构抗震方面研究和设计工作。Email： yuyq@cbs.com.cn

计量
- 文章访问数: 15
- HTML全文浏览量: 4
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2026-08-14
- 网络出版日期: 2026-11-06

A Brief Review of Stability Design Approaches for Portal Frames with Tapered Members

1. China Institute of Building Standard Design & Research Co., Ltd., Beijing 100048, China;
2. Institute of High Performance Structures, Zhejiang University, Hangzhou 310058, China

摘要

摘要: 简要论述了美国和我国的门式刚架楔形变截面构件的设计方法的最新规定。美国2011年出版的AISC设计指南No.25完全放弃了1966—1981年期间发展起来的设计规定，另起炉灶。而我国的门式刚架设计标准也从CECS 102∶2002的协会标准升级为国标（2015年），稳定性设计方法更加接近门式刚架实际，隅撑对钢梁的约束作用有明确的计算公式，绕定点扭转屈曲成为门式刚架梁稳定性验算的最主要内容，轴力、弯矩联合作用下的内力和应力计算也取自同一个截面，更加合理。
- 门式刚架 /
- 楔形变截面构件 /
- 稳定性
Abstract: This paper presents a brief review of the latest design provisions for tapered members in portal frames used in the United States and China. AISC Design Guide 25， published in 2011， completely abandoned the design approach developed during 1966-1981 that had been adopted in earlier AISC specifications. It established an entirely new approach. In China， the earlier specification CECS 102：2002 was replaced by the national standard GB 51022-2015. The stability design approach in the Chinese standard is more consistent with the actual behavior of portal frames. The rotational restraint provided by fly braces to the compressive flange of the rafter is given by explicit formulas. Accordingly， the torsional buckling check about a fixed axis of rotation becomes the governing stability check for portal frame rafters. In addition， under combined axial force and bending moment， the internal forces and stresses are calculated at the same cross-section， which appears more rational.
- portal frame /
- tapered member /
- stability

HTML全文

参考文献(16)

[1]	Timoshenko S P. Theory of elastic stability［M］. New York：McGraw-Hill，1936：518.
[2]	Timoshenko S P，Gere J M. Theory of elastic stability［M］. New York：McGraw-Hill，1963：541.
[3]	Bleich F. Buckling strength of metal structures［M］. New York：McGraw-Hill，1952.
[4]	Kaehler R C，White D W，Kim Y D. Frame design using web-tapered members：MBMA/AISC design guide 25［M］. Chicago：MBMA and AISC，2011.
[5]	Dinnik A N. Design of columns of varying cross sections［J］. ASME Transactions，1929，51：165-171.
[6]	Dinnik A N. Design of columns of varying cross sections［J］ ASME Transactions，1932，54：105-109.
[7]	Newmark N M. A numerical procedure for computing deflections，moments and buckling loads［J］. Transactions ASCE，1943，108：1161-1188.
[8]	Butler D J，Anderson G C. The elastic buckling of tapered beam-columns［J］. Welding Journal Research Supplement，1963，42（1）：29-36.
[9]	Butler D J. Elastic buckling tests on laterally and torsionally braced tapered I-beams［J］. Welding Journal Research Supplement，1966，45（1）：41-48.
[10]	American Institute of Steel Construction（AISC）. Specification for the design，fabrication and erection of structural steel for buildings［S］. Chicago：AISC，1978.
[11]	American Institute of Steel Construction（AISC）. Load and Resistance factor design specification for structural steel buildings［S］. Chicago：AISC，1999.
[12]	Lee G C，Ketter R L，Hsu T L. The design of single story rigid frames［M］. Cleveland，OH：Metal Building Manufacturers Association，1981.
[13]	中国工程建设标准化协会. 门式刚架轻型房屋钢结构技术规程：CECS 102 ∶2002［S］. 北京：中国计划出版社，2002.
[14]	中国工程建设标准化协会. 门式刚架轻型房屋钢结构技术规范：GB 51022—2015［S］. 北京：中国建筑工业出版社，2015.
[15]	Marques L R S. Tapered steel members：flexural and lateral-torsional buckling［D］. Coimbra：Coimbra University，2012.
[16]	European Committee for Standardization. Eurocode 3-design of steel structures-part 1-1：general rules and rules for buildings：EN1993-1-1∶2022［S］. Brussels：European Committee for Standardization，2022.