高速公路宽幅空心板梁桥横向拓宽结构形式的比较  

Comparison of Transverse Widened Structure of Wide-size Voided Slab Beam Bridge on Expressway

作　　者：吴文清[1] 付佳佳 单宏伟[3] 韩大章[3] 

机构地区：[1]东南大学交通学院,江苏南京210096 [2]无锡市政设计研究院,江苏无锡214072 [3]江苏省交通规划设计院股份有限公司,江苏南京210005

出　　处：《公路交通科技》2012年第3期92-97,117,共7页Journal of Highway and Transportation Research and Development

基　　金：交通运输部交通行业省部联合攻关项目(2008353334220)

摘　　要：对高速公路中宽幅空心板梁桥(板宽1.5 m)的上部结构横向拓宽方案进行了分析研究。在高速公路扩建工程中,宽幅空心板梁桥的横向拓宽时,新建桥梁原则上采用宽幅空心板梁结构,但是旧桥宽幅空心板梁在运营使用中产生了诸多结构性病害,拓宽设计时需要研究新建拓宽结构采用普通空心板梁结构的可行性,以此作为一种替代性拓宽方案。对于该替代性方案的可行性采用结构比选方法进行理论分析研究,研究表明替代性拓宽方案是可行的,并在此基础上提出了新建桥梁结构普通空心板梁的设计内力简化计算方法。Research on the transverse widening scheme of superstructure of wide-size voided slab beam bridge（1.5 m wide for single slab） on expressway was conducted in the paper.The existing wide-size voided slab beam bridge on expressway should be widened and jointed with the wide-size voided slab beam by the primary bridge widening principle,if the bridge widening project is necessary,but a lot of structural damage was founded in existing wide-size voided slab beam during service period,the widened superstructure may be constructed with the ordinary voided slab beam as an alternative widening scheme.The feasibility of this kind of bridge widening scheme was analysed by comparative selection of structures.The result indicates that the alternative widening scheme is practicable.On this basis,the simplified calculation method of internal force for designing ordinary voided slab beam in new-constructed superstructure was put forward.

关 键 词：桥梁工程 拓宽结构 结构比选 拓宽方案 宽幅空心板 普通空心板 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]