STUDY ON FATIGUE PERFORMANCE AND STRENGTHENING METHOD OF RIGHT-ANGLE CATASTROPHE STEEL CRANE BEAM

被引：0
|
作者：
Zheng Y. [1 ]
Sun J.-W. [2 ]
Zhao X. [3 ]
Cui T. [1 ,4 ]
机构：
[1] MCC Construction Research Institute Co., Ltd, Beijing
[2] CABR Testing Center Co., Ltd, Beijing
[3] School of Civil Engineering, Hebei University of Technology, Tianjin
[4] Department of Civil Engineering, Tsinghua University, Beijing
来源：
Gongcheng Lixue/Engineering Mechanics | 2024年 / 41卷
关键词：
crane beam; fatigue life; fatigue performance; fatigue reinforcement; industrial buildings;
D O I：
10.6052/j.issn.1000-4750.2023.07.S030
中图分类号：
学科分类号：
摘要：
The fatigue failure of steel crane beams has caused many safety accidents and has become one of the hot issues in the field of industrial buildings. A right-angle crane beam is the most common form of crane beams. In order to study the fatigue damage mechanism and reinforcement method of right-angle crane beams and improve the fatigue resistance of traditional steel right-angle crane beams, the reinforcement measures of one three-web structure are proposed on the basis of clarifying the stress concentration position of a crane beam support. Through finite element simulation analysis and experimental research, the reinforcement effect of the setting method and the three-web structure on the cracked bearing is explored; the structural stress distribution along the weld length at the stress concentration position before and after reinforcement at the support is analyzed, and the reinforcement effect of the three-web structure is verified. The study results show that compared with the traditional right-angle bearing, the maximum structural stress at each position of the three-web bearing decreases by 60%, and the stress intensity factor at the crack decreases by about 50%; The fatigue life of crane beam can be greatly increased under both no cracked and cracked conditions. © 2024 Tsinghua University. All rights reserved.
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页码：275 / 281
页数：6
相关论文
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