公铁同层桥梁列车轨道优化布置风洞试验研究

Wind Tunnel Test Research on Optimal Train Track Arrangement the Highway and Railway Combined Bridge

公铁同层桥梁桥面一般设置较宽,列车轨道在桥面有多种布置方式,横风作用下列车在桥面位置的不同势必会引起车桥结构周围流场的变化,进而导致其横风作用受力的不同.文中以金海大桥为背景,基于风洞试验,研究了公铁同层桥上列车横向布置为对车桥系统气动特性的影响规律,确定了列车轨道最优布置方案.

Bridge decks on the same floor of public railways are generally set wider,and train tracks are arranged in various ways on the bridge deck.Different positions of trains on the bridge deck under the action of cross wind will inevitably cause changes in the flow field around the axle structure,which will lead to different forces under the action of cross wind.Taking Jinhai Bridge as the background and based on wind tunnel tests,this paper investigated the influences of the lateral arrangement of train tracks on the aerodynamic characteristics of the train-bridge systems,and the optimal train track arrangement schemewas determined.