城市复杂条件下过江通道桥隧方案比选研究——以宁波市四明路跨奉化江通道为例

随着城市化进程的加快，城市过江通道规划的数量越来越多。在城市建成区内，过江通道的建设条件越来越复杂，通常要处理好过江通道与交通路网、地块开发、地铁建设、河道通航等重要制约因素的之间的关系。过江通道在桥隧形式上各有利弊，以宁波市四明路跨奉化江通道为例，分别研究了桥梁、隧道过江方案的总体布置，桥隧方案与地铁的关系，通过对桥隧方案各自的优缺点进行对比分析，得出了采用桥梁方式过江为最优方案，为类似过江通道工程提供借鉴。

Comparison and Study on Bridge and Tunnel Schemes for Cross-river Channels under Complex Urban Conditions in Ningbo

With the acceleration of urbanization, there is a growing number of cross-river channels across cities. In the urban built-up areas, the construction conditions of the cross-river channels have become more complex. Generally, the relationship among the cross-river channels and the traffic network, land development, subway construction, river navigation and other significant constraints should be treated with caution. The cross-river channels have their pros and cons whether in the form of a bridge or tunnel. Taking the Tunnel across Fenghua River, Siming Road, Ningbo as an example , this paper is designed to study the general layout of the bridges and tunnels across the river, and the relationship between the bridge and tunnel schemes and subways. Through the comparative analysis of the advantages and disadvantages of the bridge and tunnel schemes, it is concluded that the bridge across river is recommended. The research ideas in this paper can be used as a reference for similar cross-river tunnels.