摘要
全桥结构仿真分析的技术思想是建立完整、统一的整座桥梁结构分析体系，在该体系下构造全桥所有承载构件的组合形式数学模型，由此克服传统桥梁计算由于计算体系假设、计算平面假设、铰接或刚接假设、边界条件假设和平截面变形假设等带来的不足，运用限制变形－还原内力原理确立结构仿真分析的初始形态，在此基础上进行大规模的全桥结构效应分析计算，使分析结果详尽、精确、可靠。本文建立大跨铁路钢桁梁桥和钢板梁桥全桥结构仿真分析数学模型，说明了钢桁梁桥杆件和节点板详细应力分布、平面框架详细变形与应力分布和有变形缺陷钢板梁桥重要部位应力的仿真分析结果等问题。
An analysis of structural simulation for entire bridge (SSEB) is to establish a unified analysis system of bridge structure, and to model all structural components of the complete bridge in detail under the system, which can get results of analysis with sufficient accuracy, thoroughness and reliability. The authors describe the modelling of a railway steel truss bridge with long span in order to analyse the detailed distribution of stress for members and nodal plates in main truss, the detailed deformation and stress distribution due to frame effect on transversal bracing plane in truss bridge, and the detailed distribution of stress in important parts of the steel plate girder bridge with initially transversal deformation by using SSEB in this article.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
1999年第1期62-66,共5页
Journal of the China Railway Society
基金
国家自然科学基金
关键词
桥梁工程
结构仿真
铁路钢桥
应力分析
bridge engineering
structural simulation
railway steel bridge
