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研究目的:高速铁路线路要求标准高,受到地形条件的限制,有时不得不将道岔设置在框架桥上。为了最终实现岔区板式无砟轨道布设于框架桥上,研究总结具体的施工技术。研究结论:框架桥上岔区板式无砟轨道施工技术包括铺设高强度挤塑板和滑动层、浇筑底座板混凝土、铺设道岔板、灌注水泥乳化沥青砂浆、剪切连接道岔板和制作侧向挡块等。框架桥上岔区板式无砟轨道施工工序多,施工技术较为复杂,需要严格控制施工质量和施工精度,以满足岔区板式无砟轨道少维修和高平顺性的技术要求。
Research purposes: High-speed railway lines require high standards, subject to the constraints of the terrain conditions, and sometimes have to set the switch in the framework of the bridge. In order to achieve the ultimate realization of fork plinth slab track laying in the framework of the bridge, the study summarized the specific construction techniques. Research conclusions: The construction technology of the ballastless slab track in the fork section of the frame bridge includes laying high-strength extruded plates and sliding layers, pouring the concrete of the base plate, laying out the switchboard, pouring the cement emulsified asphalt mortar, cutting and connecting the switchboard and making the lateral block Block and so on. There are many construction procedures for the ballastless slab track in the fork section of the bridge. The construction technique is complicated and the construction quality and construction precision should be strictly controlled so as to meet the technical requirements of less maintenance and high ride comfort of the ballastless slab track.