With the development of social economy and the improvement of people's living standards,bridge,as an important part of transportation infrastructure,bears the important responsibility of connecting regions and promoting economic exchanges.Therefore,the structural design and selection of bridges have become the key to ensuring the safety,economy,beauty of bridges and meeting functional requirements.In order to study and determine the key points of bridge structural design and selection,combined with a highway bridge project,this paper analyzes the design and selection process and key points of the upper and lower structure,and draws the conclusion that in the highway bridge project with 30 m span and 40 m span,the prestressed concrete box girder+rectangular single column pier+ribbed slab abutment has good applicability and economy.
highway bridgeupper structurelower structuredesign and selection
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