地铁地面路基式下穿高速公路防撞护栏升级改造

Research on crash barrier upgraded of highway above the subway

结合城市地铁路由选择时存在与绕城高速立体交叉,地铁采用地面路基形式下穿方式这一特点,对该节点高速公路防撞护栏升级配筋及桥面板强度进行了结构验算,选取了合适的升级改造方案,以保障上跨高速公路结构的稳定性和下穿地铁的运营安全性。

Combining with when the subway choosing the subway route, there will be interchanged with the round high-speed, so subway use ground under embankment type to wear. For the problem of the node interchanges highway crash barrier upgrade, by the upgrade of crash barrier reinforcement and bridge structure and checking calculation of strength of panel, select the appropriate upgrade scheme, security the safety across the highway structure on the stability and wear under the subway operation.