钢-UHPC组合梁在大跨径桥梁中的设计与应用分析

Analysis on Design and Application of Steel-UHPC Composite Girder in Long-span Bridge

摘要:

嘉兴市市区快速路环线工程跨越京杭大运河地面老桥（龙凤桥）拟采用钢-UHPC 组合梁方案，与常规的预应力混凝土连续梁、波形钢腹板连续梁和系杆拱桥方案在经济性、施工方案和耐久性方面进行对比分析。结果表明，钢-UHPC 组合梁在大跨径桥梁工程中具有较显著的优势和良好的应用前景。

Abstract:

Jiaxing Urban Expressway Ring Line Project crosses the olg ground bridge (Longfeng Bridge) of Beijing-Hangzhou Grand Canal. It is proposed to use the steel-UHPC composite girder scheme. Compared with conventional prestressed concrete continuous beams, corrugated steel web continuous beams and bowstring arch bridge schemes, the aspects of economy, construction scheme and durability are compared and analyzed. The results show that steel -UHPC composite beams have obvious advantages and good application prospects in long-span bridge projects.