南阳市张衡西路跨铁路立交桥工程总体方案设计

Overall Plan Design of the Railway Interchange Project Crossing Zhangheng West Road in Nanyang City

南阳市张衡西路跨铁路立交桥工程包含主线高架、环形匝道2座、地面桥4座、跨焦柳铁路桥1座。针对项目场地特点,提出以机动车上跨、人非下穿的形式来跨越焦柳铁路,使人、非过铁路的距离最短,并满足非机动车的骑行需求。针对跨铁主桥与铁路斜交的特点,采用分幅转体设计,既避免了主桥跨径过大,又避免了大吨位的转体施工,降低了工程风险。现重点介绍了该项目桥梁工程的总体设计、关键节点设计,以及景观设计等情况。

Nanyang Zhangheng West Road Railway Crossing Flyover Project includes the main line viaduct,2 ring ramps,4 ground bridges and the Jiaozuo-Liuzhou railway crossing bridge.According to the characteristics of the project site,it is proposed to cross Jiaozuo-Liuzhou railway in the form of motor vehicles spanning up and people not crossing down,so as to minimize the distance between people and people not crossing the railway and meet the riding needs of non-motor vehicles.In response to the characteristics of the oblique intersection between the main bridge and the railway,a segmented swivel design is adopted,which not only avoids excessive span of the main bridge but also avoids large tonnage swivel construction,reducing engineering risks.This article focuses on the overall design,key node design,and landscape design of the bridge project.