铁道标准设计2019，Vol.63Issue(1)：65-69,5.DOI:10.13238/j.issn.1004-2954.201809110002
三门峡黄河公铁两用大桥总体设计及创新
Overall Design and Innovation of Sanmenxia Yellow River Rail-road Bridge
刘俊锋 1宁伯伟 1李华云1
作者信息
- 1. 中铁大桥勘测设计院集团有限公司, 武汉 430056
- 折叠
摘要
Abstract
The Sanmenxia Yellow River rail-road bridge is a control project of the railway coal transport corridor from Mengxi to Central China across the Yellow River. It carries double-track heavy-haul railway, double-track I-grade railway and six-lane expressway with a total length of 5 663. 754 m. The length of the rail-road joint construction section is 1 762. 733 m. The main bridge is a continuous steel truss composite girder bridge with a span of (84+9×108+84) m. The steel truss girder is a three-piece main truss structure and the center distance between the middle truss and the side truss is 13. 6 m. Each piece of the main truss adopts triangular truss without vertical bar, the truss height is 15 m and the length of segment is 12 m. The lower railway deck is orthotropic integral steel deck, and the upper highway deck is a combined structure of concrete slab and main truss. The steel material is Q370 qE. The total design live load is 473. 2 k N/m. The pier is round end hollow structure and the foundation is constructed with bored piles. Hyperboloid seismic isolation bearings and reasonable structural treatment are adopted in main bridge, which effectively improves the seismic performance of the structure. The steel truss girder is constructed by incremental launching method and the highway deck is completed by precast erection method.关键词
重载铁路/连续钢桁结合梁/顶推法施工/桥面板结合/减隔震支座Key words
Heavy haul railway/Continuous steel truss composite girder/Incremental launching method construction/Combined bridge deck/Seismic isolation bearing分类
交通工程引用本文复制引用
刘俊锋,宁伯伟,李华云..三门峡黄河公铁两用大桥总体设计及创新[J].铁道标准设计,2019,63(1):65-69,5.
