摘要
钢吊车梁直角式突变支座在工业建筑中应用广泛,然而缺乏该类连接的疲劳强度评估数据。通过回顾直角式突变支座的演化历史,基于有限元分析,研究了截面参数对直角式突变支座应力集中区域的影响;通过缩尺模型疲劳试验,得出适用于该类构件疲劳强度评估的S-N曲线,直角式突变支座插入板与封板连接焊缝的疲劳强度相对于200万次的允许应力幅为80.2MPa,与GB50017-2017《钢结构设计标准》中的第Z7类相似。
The right-angle mutational support of steel crane beams has been widely used in industrial buildings, but lacks the fatigue strength evaluation data for this type of connection. The paper reviewed the evolution history of right-angle mutational support, studied the influence of cross-section parameters on stress concentration area of right-angled mutation support through the finite element analysis, and obtained S-N curve suitable for the fatigue strength evaluation of this kind of member through fatigue test of scale model. The fatigue strength of the welds between the insert plate and the sealing plate of the right-angle mutational support was 80.2 MPa relative to the allowable stress amplitude of 2 million times, which was similar to the Z7 class in GB 50017-2017 Standard for Design of Steel Structures .
作者
赵晓青
幸坤涛
常好诵
杨东磊
ZHAO Xiaoqing;XING Kuntao;CHANG Haosong;YANG Donglei(Central Research Institute of Building and Construction,MCC Group,Beijing 100088,China)
出处
《工业建筑》
CSCD
北大核心
2019年第5期166-169,102,共5页
Industrial Construction
基金
国家十三五重点研发计划课题(2016YFC0701303)
