预制装配式波形钢腹板组合小箱梁的研究及应用

马骉，徐航，苏俭，黄虹

摘要:

波形钢腹板组合小箱梁桥是一种新型钢－混凝土组合结构,采用波形钢板代替混凝土腹板或加劲平钢板。针对高架桥梁,提出了预制装配式波形钢腹板组合小箱梁设计方案,针对其进行经济技术分析,并结合上海市沿江通道西延伸(富长路~江杨北路)改建工程项目,进行了实际应用。通过研究及应用,表明该类型结构具有预应力效率高、结构各部分受力明确、施工速度快、综合造价低及造型美观等优点,值得进一步在高架桥梁中推广和应用。

Abstract:

A multi-small box-girder bridge with corrugated steel webs (MBB-CSW) is a new type of steel-concrete composite structures, which replaces the concrete webs or stiffened plane webs by the corrugated steel webs. Aiming at viaduct construction, an MBB-CSW design scheme is proposed, and the corresponding economic and technical analysis is carried out. Based on the river channel rehabilitation project in Shanghai (from Fuchang Road to Jiangyang North Road), the proposed scheme is applied in practice. The results show that MBB-CSW has the advantages of high prestressing efficiency, clear load transfer path, faster construction speed, lower cost, and elegant appearance, etc., which make it has great potential of benefiting future viaduct design and construction.