既有线多股道高落差线路加固施工

Reinforcement Construction of Existing Railway with Multiple Tracks And Large Height Difference

随着交通运输业的快速发展,机动车数量的增加和行车速度的提高使得道路、铁路在平交道口的矛盾日益突出,因此平交道口改立交的需求越发迫切。根据京通铁路电化改造工程高各庄北框构桥(中心里程K60+795.14)的特点及难点,介绍既有线为多股道、高差大、线间距窄、受接触网杆影响情况下的线路加固体系施工方法及施工工艺、加固过程中的安全保证措施。多股道大高差既有线顶进框架桥的实践可为今后类似工程提供参考。

With the rapid development of the transportation industry, the huge increase in the number of motor vehicles and the rising driving speed lead to increasingly prominent contradiction between roads and railways at level crossings, so the demand for the transformation of level crossings into interchanges becomes more and more urgent.In view of the characteristics and difficulties of Gaogezhuang North Framed Bridge(center mileage of K60+795. 14)in the Electrification of Beijing-Tongliao Railway, the paper presents the construction method, construction technology and safety assurance measures during the reinforcement process in the track reinforcement system of the existing railway with multiple tracks and large height difference, at a narrow distance between centers of tracks and under the effect of OCS poles. The practice of jacking frame bridge on the existing railway with multiple tracks and large height difference provides a reference for similar projects in the future.