Through analysis and optimized design, the construction technology of monolithic track bed in Beijing urban rail transit will be changed from assembling on-site to separately assembling method. This change may improve the quality as well as shortening the construction period.%针对目前北京地铁所采用的整体道床道岔类型，通过分析研究，采取优化设计，将整体道床道岔现场散铺施工改为分体组装施工，提高了整体道床道岔铺设质量，同时缩短了施工周期。
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