梅州市广州大桥主桥设计

Design of Main Bridge of Guangzhou Bridge in Meizhou City

作为一类(139+106)m独塔单索面不对称斜拉桥,广州大桥主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有限元分析软件进行全桥静力计算,结果表明该桥强度、刚度均满足规范要求。

As a kind of(139+106)m single-pylon single-plane asymmetric cable-stayed bridge,the pylon-pier-beam consolidation system is used for the main bridge of Guangzhou Bridge.The main beam is an integral prestressed concrete box girder with wide and large cantilever and approximate triangular inclined web.The bridge pylon 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 the static calculation of the whole bridge.The results show that the strength and stiffness of the bridge meet the specification requirements.