波浪力作用下桥梁设计以及安全性分析

Bridge Design and Safety Analysis under Wave Force

以珠海市横琴岛西南侧峡湾内一座桥面标高仅5.5 m,长约2.2 km的低桥位环岛桥梁为例,重点论述了低桥位桥梁结构的体系选择、上部结构截面设计、下部结构设计等,并对波浪力计算、考虑或不考虑波浪力对低桥位桥梁结构的影响进行了有限元分析。结果表明,考虑或不考虑波浪力情况下,该桥梁结构均满足规范要求。所述案例可为近海环岛低桥位桥梁建设提供参考。

Taking a bridge with a deck elevation of only 5.5 m and a length of about 2.2 km at the low bridge position around the island within the fjord at the southwest side of Hengqin Island in Zhuhai as an example,the system selection of bridge structure at the low bridge position,the section design of superstructure and the design of substructure are specially discussed.The finite element analysis is carried out for the calculation of wave force,and the influences of considering or not considering wave force on the bridge structure at the low bridge position.The results show that the bridge structure all meets the requirements of the code under the conditions of considering or not considering the wave force.This bridge case can provide a reference for the construction of low-position bridges around offshore islands.