北京昌平西关环岛1号立交桥梁改造工程的设计

首先对昌平西关环岛1号立交旧板病害原因进行分析,根据旧板破坏状态和快速施工要求进行改造方案比选,然后介绍平面异形正交异性桥面板钢箱梁的结构受力特性及本桥的整体设计和细节设计,可为类似的城市弯、坡、斜异形桥梁改造提供新思路,更好地满足城市旧桥改造需求,降低其对交通的影响。

Design of Beijing Changping Xiguan Ring Island No.1 Interchange Reconstruction Project

This paper firstly analyzes the disease reasons of the old deck slabs for Changping Xiguan Ring Island No.l Interchange,compares and selects the reconstruction schemes based on the damage status of old deck slab and the requirements of rapid construction,and then introduces the structure stress characteristics of the steel plane special-shaped orthotropic deck slab box girder and the overall and detail designs of this bridge,which can provide the new idea for the reconstruction of the similar urban curved, slope and oblique-shaped bridges,better satisfy the reconstruction requirements of old urban bridges and reduce its influence on the traffic.