辽宁工程技术大学学报（自然科学版）2025，Vol.44Issue(1)：83-92,10.
超长悬挑钢支架锚固螺栓变参数力学分析及优化
Mechanical analysis and optimization for super-long steel cantilevered-frame with various design parameters and fixed by bolts
摘要
Abstract
In order to analyze and optimize the design scheme of anchoring bolts for super-long cantilever steel supports,a calculation model for the cross-sectional stress of each anchoring bolt under variable parameter conditions was established.The continuous change process of the cross-sectional stress of all anchoring bolts of two kinds of super-long cantilever steel supports was simulated,and the influence mechanism of parameter changes on the cross-sectional stress of bolts was analyzed.Based on the principle of minimum stress of each bolt cross section,the design scheme of cantilever steel support is optimized and applied to practical engineering.The calculated stress of the bolts of each anchoring device was compared with the simulated stress of COMSOL,and the stress distribution cloud map was obtained.The numerical calculation results show that no matter the super-long cantilever steel support is fixed on the column or the beam,when the diagonal bracing beam is fixed at the 3/4 length position of the extended beam,the maximum normal stress combination and the average shear stress combination of all the anchorage bolt cross sections are the smallest.The average shear stress of the bolt cross section of the fixed section of the horizontal beam is the largest,and the maximum normal stress of the bolt cross section of the diagonal bracing beam is the largest.The research results can provide guidance for the design of super-long cantilever steel support and its anchorage device.关键词
悬挑钢支架/锚固装置/最大正应力/平均切应力/螺栓Key words
steel cantilevered-frame/anchoring device/maximum normal stress/average shear stress/bolt分类
建筑与水利引用本文复制引用
张洪涛,方三陵,郭佳佳,刘明周,谢向东,张衡,杜国锋..超长悬挑钢支架锚固螺栓变参数力学分析及优化[J].辽宁工程技术大学学报（自然科学版）,2025,44(1):83-92,10.基金项目
国家自然科学基金项目(52078052) （52078052）
