城际铁路隧道下穿客运专线铁路桥梁方案设计

Scheme Design of Intercity Railway Tunnel Crossing under the Bridge of Railway Passenger-dedicated Line

新建工程与既有高速铁路的交叉处是影响高速铁路运营安全的重要敏感点,交叉方案的设计非常关键。通过广佛环线陈村2号隧道下穿客运专线广州南站矿山法方案及盾构法方案的比较,提出类似工程应优先推荐盾构法进行施工,并对盾构法方案进行数值模拟计算,结果表明盾构方案是安全、经济、合理的。

The intersection point between new project and existing high-speed railway is one of the most sensitive points which exerts influence on the operation safety of high-speed railway, therefore, the scheme design for the intersection point is especially important. In regard to the intersection project of Chenchun No. 2 Tunnel of Guangzhou-Foshan Intercity Loop Line crossing under Guangzhou South Station of passenger dedicated line, the author conducted the scheme comparison between the mining method and the shield method. After comparison, the author suggested that the shield method should be regarded as the first priority for all similar projects. Finally, by numerical simulation calculation on the scheme of shield method, it was concluded that the scheme of shield method would be safe, economical and reasonable.