Abstract：Research purposes：This paper，associated with a certain engineering project of differential settlement on ballastless track long-span bridge in high-speed railway，analyzes the bridge structure and ballastless track stress on bridge under operation condition with diverse differential settlement value．Through comprehensive analysis of structure safety and adaptability，the relevant solutions and suggestions are proposed．Through targeted research，this paper is aimed at providing the reference for remediation processing of large-span continuous beam differential settlement in the future． Research conclusions：When long-span continuous beam differential settlement value is more than a certain range of the current design code，the stress influence on the pier is less，the effect on continuous beam girder and rail is controllable．The current code limit value for long-span continuous beam differential settlement should be appropriate to relax，to guarantee the safety of the structure and save the construction cost．At the same time，the larger differential settlement should be taken timely measures to carry out comprehensive improvement．The research results can be applied to differential settlement remediation of the railway long-span continuous beam pier caused by soft soil，groundwater level changes and other factors．
Sun Zonglei．Analysis of Settlement Influence on Beijing-Shanghai High-speed Railway Caused by Under-passing of Shijiazhuang-Jinan Passenger Dedicated Line 7S Bridge[J]．Journal of Railway Engineering Society。2013(2)：53-57．
2014, Vol. 31 
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