摘要
Abstract
The paper studies the scheme and layout of the long-span highway and light rail suspension bridge, analyzes the bridge structure force characteristics, puts forward the control factors of rail traffic safety and technical measures for design, determines the reasonable vertical stiffness and summarizes the design standard and key technical measures.The research results show that with the increase of the span of suspension bridge structure and its structural mass, the main beam bending contribution rate decreases gradually, while the main cable gravity stiffness contribution rate increases little by little;the main factors controlling the stiffness of suspension bridge include span, main cable cross-section, rise span ratio and tower anti push rigidity;by controlling such parameters as main beam vertical stiffness, beam angle and torsional stiffness, the smoothness of the track can be ensured and reasonable arrangement of track bridge deck system can make the structural force of the track more reasonable.关键词
公轨两用桥/单跨悬索桥/桥面系布置/有轨电车/设计标准/技术措施/竖向刚度Key words
Highway and light rail bridge/Single-span suspension bridge/Deck system layout/Tramcar/Design standards/Technical measures/Vertical stiffness分类
交通工程
