论文部分内容阅读
随着我国交通事业的发展,铁路经过城市郊区,采用轻型短跨的旱桥代替路堤和大跨度梁以及采用建筑高度低的槽型梁等新型桥梁结构作立交桥是可行的,合理的。文中介绍的新荷线跨越京广铁路立交特大桥,全长3016m,代替路堤部分为326孔跨度8m钢筋混凝土简支梁、位于京秦线上跨越京承线的2孔跨度24m单线槽型梁和位于京秦线上跨越京丰公路的双线单孔跨度20m槽型梁,都在少占良田、降低工程造价,提高经济效益上取得较好成绩。
With the development of transportation in our country, it is feasible and reasonable that the railway passes through the outskirts of the city, and the new type of bridge structure such as the light and short span dry bridge instead of the embankment and the large span beam and the trough beam with low building height are adopted. The new load line introduced in this article covers a total length of 3016m and covers an area of 3016m instead of the embankment of 326m span span 8m reinforced concrete simply supported girder. The 2-hole span 24m single-line grooved girder And the double-track single-hole span 20m groove beam located on the Jing-Qin line across Beijing-Fengfeng Highway achieved good results with less occupation of farmland, lower construction cost and higher economic efficiency.