温州瓯江北口公铁合建特大桥总体方案研究

Study on Overall Scheme of Highway-Railway Co-constructed Bridge at North Estuary of Oujiang River in Wenzhou

摘要:

公铁合建桥梁相较于单独建设，能有效节约土地和海域资源，减少时间和资金投入，提升项目的经济性和环境友好性。以温州跨瓯江北口公铁合建特大桥为例，通过对车行通道建设需求、桥位资源稀缺性、岸线保护和工程投资节约等方面的分析，印证了公铁合建的必要性、合理性和经济性；同时，论述了该工程总体布置方案，并在对比公铁分层和平层2种方案的优劣后，推荐了平层方案。此外，还对桥梁两侧的接线道路工程方案进行了研究。

Abstract:

Compared to individual construction, the co-construction of highway and railway bridges can effectively save the land and sea resources, reduce the time and capital investment, and enhance the economic and environmental friendliness of the project. Taking the highway-railway co-constructed bridge at the north estuary of Oujiang River in Wenzhou as an example, the necessity, rationality and economy of the co-construction of highway and railway are confirmed through the analysis of the construction demand of vehicle lanes, scarcity of bridge position resources, shoreline protection, and engineering investment savings. At the same time, the overall layout scheme of the project is discussed, and the leveling scheme is recommended after comparing the advantages and disadvantages of two schemes, such as layering and leveling of highway and railway. In addition, the connection road engineering schemes on both sides of the bridge are studied.