有轨电车桥上纵向分体式轨道结构参数研究

Study on Structural Parameters of Longitudinal Split Track on Tram Bridge

当前,我国在有轨电车建设领域的相关施工技术依然方兴未艾,因此,对有轨电车轨道结构的受力特点进行详细分析十分必要。其中,桥上纵向分体式轨道结构作为新型的有轨电车轨道结构之一,现阶段主要被应用于城市道路交通中的简支变连续梁桥上,体现了较良好的适配性。基于某简支连续梁纵向分体式轨道结构,通过建立桥梁-轨道一体化力学计算模型,开展在温度荷载和列车荷载作用下,轨道板单元长度和轨道部件聚氨酯(PUR)填充材料弹性模量等关键参数对轨道结构力学性能的影响研究。

At present,the relevant construction technology in the field of tram construction in China is still incomplete,so it is necessary to make a detailed analysis of the force characteristics of the tram track structure.Among them,as one of the new tram track structures,the longitudinal split type track structure on the bridge is mainly applied to the simply supported variable continuous beam bridge in urban road traffic at present,which shows a better adaptability.In this paper,based on the longitudinal divided track structure of a simple supported continuous beam,and by establishing the integrated bridge-track mechanics calculation model,the influence of key parameters,including the length of track plate element and the piano model of track component polyurethane(PUR),on the mechanical performance of track structure under the action of temperature load and train load was studied.