中小跨径钢与组合结构桥梁选型研究

Study on Selection of Medium-span and Small-span Steel and Composite Structure Bridges

综合考虑实际工程的建设需要,针对拆除重建引桥、净空受限拼宽桥、互通支线上跨桥几种典型的改扩建应用场景,分别从桥梁适用性、经济性、耐久性等方面对潜在的应用桥型进行方案比选,从而确定不同应用场景中合理的桥梁选型,对钢与组合结构桥梁在中小跨径建造和应用领域进行了有益的探索。

By comprehensively considering the actual engineering construction needs for several typical reconstruction and expansion application examples of an approach bridge removed and rebuilt,a assembled wide bridge with limited headroom,and an overpass of interconnecting branch line,the schemes of potential application bridge types are compared from the aspects of bridge applicability,economy and durability so as to determine the reasonable bridge types in the different application scenarios,which carry out the beneficial exploration for the construction and application of small-span and medium-span steel and composite structure bridges,provide the rich reference cases for the application of the similar projects,and play certain role in the development and promotion of small-span and medium-span steel and composite structure bridges.