Abstract：Research purposes: The purposes are to be conducive to enhancing the knowledge of builders and clerks of works on observation and evaluation of settlement deformation after work and construction of passenger dedicated line by putting forward the integration concept on the key controls measures for the observation and evaluation of settlement deformation after work.
Research methods: Through making analysis of the information of foreign countries，first the analysis was made for the settlement deformation of independent units，then the systematic analysis was made for the integrated settlement deformation of different units according to the concrete conditions of building passenger dedicated line in China and the correlative codes.
Research conclusions: Through the analysis and systematic evaluation of inferences from the difference settlement deformation between the different units such as roadbed，bridge and culvert，tunnel etc.，the impact on the ballastless track by settlement deformation of every unit was determined so as to eliminate the impacts of settlement deformation by each unit and also the time of laying ballastless track was determined to ensure the ballastless's service lifecycle.
尤昌龙. 无碴轨道工后沉降变形观测、评估的集成理念[J]. 铁道工程学报, 2007, 24(3): 25-28.
YOU Chang-Long. The Integration Concept on Observation and Evaluation of Ballastless Track. 铁道工程学报, 2007, 24(3): 25-28.
2007, Vol. 24 
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