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研究目的:随着我国客运专线铁路的建设发展,受车站布置的影响,跨区间无缝线路道岔上桥已不可避免。本文从桥面布置、结构形式和施工方案3个方面,对设于道岔区的厦深铁路韩江特大桥主跨(48+3×80+48)m变宽度有砟轨道连续梁桥进行设计研究。研究结果:通过大跨变宽度连续梁有限元分析计算,梁部各项指标均满足桥梁规范及轨道专业要求,设计的施工方案也是切实可行的。韩江桥满足了车站布置和通航、防洪需要,在大跨度预应力混凝土连续梁桥上设置高速无缝道岔属于国内首次,也是我国客运专线建设中又一关键技术的突破和创新。
Research purposes: With the construction and development of the passenger dedicated railway line in our country, due to the influence of station layout, it is inevitable that the bridge on the cross-section seamless railway turnout must be avoided. This paper designs the continuous girder bridges of 48 ± 3 × 80 + 48 m with continuous girder bridges of the main span of the Hanjiang River Bridge in the turnout area from three aspects of the deck layout, the structure and the construction scheme. the study. Research results: Through the finite element analysis of continuous beam with large span and wide span, all the indexes of the beam meet the requirements of the bridge norms and the orbit professionals, and the designed construction scheme is feasible. Hanjiang bridge to meet the station layout and navigation, flood control needs, in the long-span prestressed concrete continuous beam bridge to set high-speed seamless turnout is the first time in China, but also the construction of China’s passenger dedicated line another key breakthrough in technology and innovation.