巢湖至马鞍山铁路跨越长江桥隧方案比选研究

Comparison and Selection of Bridge and Tunnel Schemes of Chaohu-Ma’anshan Railway Across the Yangtze River

巢湖至马鞍山铁路是马鞍山通往巢湖的铁路通道,项目跨越长江部分采用公铁合建形式,在跨越长江位置的选择中,推荐江心洲姑孰过江线位。论文对上述过江线位的桥梁越江方案和隧道越江方案进行深入研究,经过比较,隧道方案工程投资相对较少,但综合考虑全寿命周期养护维修费用,桥梁方案可节省14.7亿元,同时桥梁方案行政审批难度相对较小,施工、运营方面条件相对较好,与地方规划吻合,故本项目推荐公铁合建桥梁越江方案。

The Chaohu-Ma’anshan Railway is a railway corridor from Ma’anshan to Chaohu.Crossing the Yangtze River,the project adopts the form of railway and road construction.In the selection of the river crossing location,the Jiangxinzhou-Gushu crossing line location is recommended.This paper conducts an in-depth study on the bridge crossing scheme and tunnel crossing scheme of the river crossing line.After comparison,The investment in the tunnel crossing scheme is relatively low,while the overall life cycle maintenance and repair can save 1.47 billion yuan higher than the bridge scheme.At the same time,the administrative investigation and approval of the bridge plan is expected to be relatively easier,and the construction and operation conditions are relatively better,which is consistent with local transportation planning.As a result of this research,the highway-rail joint construction of the bridge across the river is recommended.