梅州市广州大桥主桥设计

摘要:

本研究以广州大桥主桥为例,作为一类(139+106)m独塔单索面不对称斜拉桥,该桥采用塔墩梁固结体系。主梁采用宽幅大挑臂近似三角形斜腹板整体预应力混凝土箱梁。桥塔采用带椭圆端头的矩形截面“一”字形预应力混凝土结构。主墩为混凝土双薄壁墩。选择应用Midas/Civil有限元分析软件采取全桥静力计算,结果表明该桥强度、刚度均满足规范要求。

Abstract:

In this study, the main bridge of Guangzhou Bridge is taken as an example. As a kind of (139+106) m asymmetric cable-stayed bridge with single tower and single cable plane, the bridge adopts the tower pier beam consolidation system. The main beam adopts the overall prestressed concrete box girder with wide and large cantilever and approximate triangular inclined web. The bridge tower is a rectangular section "I" shaped prestressed concrete structure with elliptical ends. The main pier is a concrete double thin-wall pier. Midas/civil finite element analysis software is selected for static calculation of the whole bridge. The results show that the strength and stiffness of the bridge meet the specification requirements.