Effects of Openings on Steel Beams and its Design Suggestions

ZHU Qunhong; TONG Ji; TONG Genshu

doi:10.13204/j.gyjzG21122107

Volume 52 Issue 1

Apr. 2022

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Abstract

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(1): 90-97

Tao Zhong, Yu Qing. SUMMARY OF-STATE-OF-THE ART OF FRP-CONFINED CONCRETE COLUMNS[J]. INDUSTRIAL CONSTRUCTION, 2005, 35(9): 1-4,37. doi: 10.13204/j.gyjz200509001

Citation:

ZHU Qunhong, TONG Ji, TONG Genshu. Effects of Openings on Steel Beams and its Design Suggestions[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(1): 90-97. doi: 10.13204/j.gyjzG21122107

Tao Zhong, Yu Qing. SUMMARY OF-STATE-OF-THE ART OF FRP-CONFINED CONCRETE COLUMNS[J]. INDUSTRIAL CONSTRUCTION, 2005, 35(9): 1-4,37. doi: 10.13204/j.gyjz200509001

Citation:

ZHU Qunhong, TONG Ji, TONG Genshu. Effects of Openings on Steel Beams and its Design Suggestions[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(1): 90-97. doi: 10.13204/j.gyjzG21122107

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Effects of Openings on Steel Beams and its Design Suggestions

doi: 10.13204/j.gyjzG21122107

1. Zhejiang College of Construction, Hangzhou 310000, China;
2. The Architectural Design and Research Institute of Zhejiang University, Hangzhou 310000, China;
3. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310000, China

Received Date: 2021-12-21
Available Online: 2022-04-24

Abstract

Abstract

Taking the example of simply-supported beams under uniform load, the elastic analysis of the effects of web opening and stiffening method on the steel beam was conducted. The analysis revealed that:the increment of deflection due to openings was a trilinear curve, the openings at mid-span had little effect on the defection of the beam; when the openings with the same size were eccentrically positioned, the deflection increment was smaller, the stresses in the opening segments were also smaller;however, the opening had a significant effect on the local buckling of the web. After analysis,an equation for the increased deflection of simply-supported beams was proposed;the width-to-thickness ratio of the unstiffened opening should be limited.For the sizes of the openings in high-shear or low-shear segments, the British SCI regulations were introduced for reference; the openings in high-shear segment had significant effect on the strength and local buckling of the beam, it was suggested that horizontal stiffeners should be used to avoid local buckling and increase the strength.
- steel beam,
- opening,
- deflection,
- web stability

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References(6)

References

[1]	中华人民共和国住房和城乡建设部.高层民用建筑钢结构技术规程:JGJ 99-2015[S].北京:中国建筑工业出版社,2015.
[2]	中华人民共和国住房和城乡建设部.钢结构设计标准:GB 50017-2017[S].北京:中国建筑工业出版社,2018.
[3]	LAWSONR M, HICKS S J.Design of composite beams with large web openings[M]. Berkshire:Steel Construction Institute, 2011.
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