惠州范和港跨海大桥设计特点

惠州范和港跨海大桥是座主跨为300m双塔单索面混凝土斜拉桥。桥梁的抗风抗震与防船撞防腐蚀是设计的重点。本桥将抗震和防船撞结合在一起,采用结构自身抗船舶撞击,取消防撞钢套箱,降低工程造价;桥梁耐久性设计中在浪溅区部位采用克汰混凝土作为主要防腐蚀措施;主梁采用三角形断面,桥墩桥塔采用圆端型截面,从构造上减少阻力系数,提高桥梁的抗风稳定性。本文对该桥的结构设计技术特点进行介绍。

Design of Fanhe Bay Bridge of Huizhou

Huizhou Fanhe bay bridge is a concrete single cable plane cable-stayed bridge with the main span of 300 m.Seismic,wind resistance and vessel corrosion prevention are the key considerations of the design.Combination of both the seismic design and the vessel collision protection has been considered in this bridge.The vessel collision protection is provided by the structure itself and the project’s costs are reduced.CALTITE concrete are used in the splash zone for the durability design of the bridge.The triangular section is used in the girder,and the circular end type section is used in the piers and the bridge towers,which can reduce the drag coefficient of the structural and improve the wind stability of the bridge.A general introduction of the structural design features of the bridge is presented in the paper.