梁拱组合连续刚构桥方案设计

Scheme Design of a Beam-Arch Combination Continuous Rigid Frame Bridge

铜川市玉皇阁二号桥主桥采用(90m+4×170m+90m)预应力混凝土梁拱组合连续刚构,拱轴线采用正弦曲线拟合而成以提高结构的景观效果。结合该桥的设计,主要介绍了梁拱组合连续刚构方案的构思、特点及推荐方案设计要点。比选结果表明,梁拱组合连续刚构在大跨径公路桥梁中具有较好的适用性,且具备推广至200~300m跨径范围公路桥梁的条件。

The main bridge of Yuhuangge No.2 Bridge in Tongchuan City adopts(90m+4×170m+90m)prestressed concrete beam arch combination continuous rigid frame,the arch axis is sinusoidal curve to improve the structural landscape effect.Being combined with the design work of the bridge,the concept,characteristics and design points of the recommended design of the beam-arch combination continuous rigid frame scheme have been introduced.The comparison results have shown that the beam-arch combination continuous rigid frame has good applicability in large-span highway bridges,and has the conditions for extending to 200-300m span road bridges.