高速铁路钢桁梁-拱组合结构桥面系设计——以重庆至黔江高铁清水坪乌江大桥为例

Design of Bridge Deck System for Steel Truss Girder-arch Composite Structure of High-speed Railway——Taking Qingshuiping Wujiang Bridge of Chongqing-Qianjiang High-speed Railway as an Example

文章以重庆至黔江高铁清水坪乌江大桥(96+240+96)m连续钢桁梁-拱组合体系桥面系设计为工程实例,从荷载效应、材料用量等多个方面,对比分析了钢-混凝土板组合桥面系和正交异性板桥面系,结合受力特点和工期、工艺等要求,提出正交异性板方案是一个合理的选择,进而提出正交异性板桥面系的设计方法,以供参考。

Taking the bridge deck system design of(96 + 240 +96) m continuous steel truss girder-arch composite system of Qingshuiping Wujiang Bridge of Chongqing-Qianjiang High-speed Railway as an engineering example,this paper compares and analyzes the steel-concrete slab composite bridge deck system and orthotropic plate bridge deck system from the aspects of load effect and material consumption,etc.Combined with the stress characteristics,construction period and process requirements,it is proposed that the orthotropic plate scheme is a reasonable selection,and then the design method of orthotropic plate bridge deck system is proposed for reference.