预制装配式波形钢腹板组合小箱梁的研究及应用

Study and Application of Prefabricated Assembled Corrugated Steel Web Composite Small-box Beam

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。

The corrugated steel web composite small-box beam bridge is a new steel-concrete composite structure by using the corrugated steel plate to replace the concrete web or stiffened plain plate.For the elevated bridges,the design scheme of prefabricated assembled corrugated steel web composite small-box beam is put forward,and its economy and technology are analyzed.Combined with Shanghai Riverside Channel West Extension(Fuchang Road-North Jiangyang Road) Reconstruction Project,the practical application is carried out.The study and application show that this kind of structure has the advantages of high prestressing efficiency,definite structural stress,fast construction speed,low comprehensive cost and attractive appearance,which is worthy of further promotion and application in the elevated bridges.