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在既有铁路线上保证在不中断行车的情况下修建跨线桥,最简便的施工方法是采用顶进法。北京铁路管理局在七十年代修建了60余座跨线桥,其中大部分是采用顶进法施工的。北京市广渠门跨线桥,是国内第一座采用斜交形式斜顶进施工方法修建的跨度较大的连续刚构桥(图1)。本桥从1971年元旦开始施工,同年7月1日主桥快车道即建成通车。它的建成,
In the existing railway line to ensure that without interruption in the case of construction overpass, the easiest way to construct is the use of jacking method. Beijing Railway Administration built more than 60 flyovers in the 1970s, most of which were constructed by the jacking method. Beijing Guangqumen Overpass Bridge is the first continuous rigid frame bridge in China spanned by a diagonal cross-heading construction method (Figure 1). The bridge started construction on New Year’s Day from 1971, and the fast lane of the main bridge was completed and opened to traffic on July 1 of the same year. It’s built,