南广铁路西江桥位、桥式方案的选择  

Selection of the Site and Type of Xijiang River Bridge on Nanning-Guangzhou Railway

作　　者：陈达建 

机构地区：[1]中铁工程设计咨询集团有限公司,北京100055

出　　处：《铁道标准设计》2011年第8期47-50,共4页Railway Standard Design

摘　　要：为了使南广铁路以较经济合理的桥位、桥式跨越西江,并满足国家内河Ⅱ级通航等级要求,对适合设桥的小湘河段和三榕峡河段两桥位根据水文地质、通航条件、桥墩防撞设置、施工难易程度等方面进行比选。小湘河段桥位设计桥式为1跨450 m钢箱拱桥,三榕峡河段桥位设计桥式为连续钢桁梁斜拉桥。比较结论为:南广铁路宜在肇庆市内小湘河段跨越西江,设计为1跨过江的450 m钢箱提篮拱桥,提篮拱采用缆索吊机分段吊装。In order to find out economic and rational bridge site and type for Nanning-Guangzhou Railway to traverse Xijiang river and to satisfy the II class nevigation requirements of domestic rivers, comparative selection has been carried out between two suitable bridge sites： Xiaoxiang river section and Sanrongxia river section, in terms of hydrogeology, nevigation condition, impact-protection installation of piers, construction feasibility, etc. Bridge type of Xiaoxiang site will be a simple span 450 m steel box arch bridge, bridge type of Sanrongxia site will be continuous steel truss cable stayed bridge. It has been concluded that, Naning- Guangzhou railway is recommended to traverse Xijiang river at Xiaoxiang river section in Zhaoqin city, the designed bridge will be a 450 m steel box basket arch bridge, the basket arch will be erected by cable crane by sections.

关 键 词：南广铁路 西江 桥位桥式选择 地形条件 通航要求 设计 

分 类 号：U442.54[建筑科学—桥梁与隧道工程]