根据运营线路实际情况，对既有地铁道床浮置改造施工方案进行了研究，提出了地铁列车在规定速度下安全平稳不间断的道床浮置改进施工工艺，为今后既有线浮置改造道床施工提供参考。%According to actual operation route conditions,the paper studies existing subway ballast bed floating transformation scheme,and puts forward safe and continuous subway train ballast bed floating transformation technology under scheduled speed,which has provided some guidance for future existing subway floating transformation.
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