客运专线桥上无缝道岔设计方法研究

Research on the Design Method for Welded Turnout on Bridge of Passenger Dedicated Line

研究目的:桥上无缝道岔设计已成为客运专线的关键技术之一。目前国内桥上无缝道岔研究刚刚起步,尚未形成系统计算理论和设计方法。开展桥上无缝道岔计算理论和设计方法研究,具有重要理论和现实意义。本文旨在建立一种桥上无缝道岔计算模型和计算方法,提出桥上无缝道岔设计流程和设计方法,探索我国无缝道岔技术发展方向。研究结论:引进技术和自主创新相结合,在消化吸收国外先进设计理念的基础上,初步建立了桥上无缝道岔设计方法和设计体系,为桥上无缝道岔设计提供依据。本文建立的"岔-梁-墩一体化"计算模型能够真实反应道岔和桥梁的相互作用,桥上无缝道岔设计方法具有很强的可操作性,研究成果对于我国客运专线桥上无缝道岔设计和施工有重要指导意义。

Research purposes： The design of wielded turnout on bridge is one of key technologies for passenger dedicated line. At present, the research on welded turnout on bridge just begins in China, the systemic calculation theory and design methods are not yet formed, so it is very important to do the researches on the calculation theory and the design methods of welded turnout on bridge of Chinese passenger dedicated line. This paper puts forward the design methods for the purposes of establishing the calculation model and explores the development trend of technology for welded turnout on bridge. Research conclusions： By means of introduction of technology along with independent innovation and on the basis of absorption and digestion of advanced foreign design concepts, a design method and design system of welded turnout on bridge have been established primarily, which can provides the basis for designing of welded turnout on bridge. The integrated calculation model of ＂Welded Turnout -Bridge -Pier t＂ presented in this paper can describe action between welded turnout and bridge in truth. This design method of welded turnout on bridge is very feasible and the research results can provide important guidance for the design and construction of welded turnout on bridge for Chinese passenger dedicated line.