大安嫩江大桥主桥设计

The Design of the Nenjiang River Main Bridge in Da,an

大安嫩江大桥主桥是(70+2×120+70)m预应力混凝土半刚构连续箱梁,上部结构为单箱单室变截面连续箱梁,下部结构采用双薄壁墩,基础采用钻孔桩基础。简要介绍该桥的工程概况、结构设计、抗震分析、耐久性设计。

Combined with the Nenjiang River main bridge in Da＇an as an example, this paper expounded the design of this prestressed concrete half rigid frame continuous box beam bridge, whose upper structure was a single box, single room, variable cross-section continuous box beam, lower structure adopted double thin wall pier and the foundation was bored pile foundation. It also simply introduced the engineering general situation,structure design, seismic analysis and durability design of the bridge.