胶轮有轨电车高架桥梁部结构形式研究

Research on rubber-tyred tram transit overpass beam structure

中国城市轨道交通迅猛发展,钢轮钢轨、跨座式单轨、有轨电车及胶轮路轨等多元化轨道交通制式在各大城市迎来建设高峰期。以贵阳市有轨电车T2线一期工程为例,对高架区间导轨梁的结构体系和梁型进行比选,从刚度、施工工法、工期、运营维护、景观效果等方面进行研究分析。研究结果表明,H型钢U形梁和预应力混凝土U形梁各项指标均满足设计规范要求,正线及出入段线宜采用H型钢U形梁作为标准段梁体形式;车辆基地内对导轨梁制作精度要求较低,景观效果要求不高,宜用预应力混凝土U形梁。

With the rapid development of urban rail transit in China,various rail transit systems such as steel-wheeled,straddle-type monorail,tram and rubber-tyred rail have ushered in a construction peak in major cities.Using the Guiyang tram line T2 phase I project as an example,the structural systems and beam types of overpass section guide rail beams are compared and analyzed in the areas of stiffness,construction method,construction time,operation maintenance,landscape and so on.The research results show that both H-shaped steel U-beams and the reinforced concrete U-beams meet the requirements of the design specifications.H-shaped steel U-beams are recommended to be used for the main line and depot entrance and exit line.As the requirements for the accuracy of the guide rail beam fabrication are lower in the vehicle depot,and the requirements for the landscape effect are not high,reinforced concrete U-shaped beams are recommended to be used in the vehicle depot.