【摘要】 城市铁路为无缝线路,列车正常运营期间进行隧道下穿施工时对线路变形有严格要求。结合陕京天然气进京隧道下穿城铁施工等工程,介绍采用动态、静态测量相结合的方法,对运营中城市铁路进行准确监测,为城铁运行合理限速以及设计、施工单位完善施工工艺和有效控制施工进度,提供了监测方面的决策依据,保障了下穿施工期间城铁安全运营,并对该监测方法的应用和完善提出建议。更多还原

【Abstract】 Urban rail transit adopts jointless track that has strict requirements on track deformation during its operation when a tunnel construction is underway under it. An introduction is given to the monitoring method combining both dynamic and staticmeasurement, which was used for accurate monitoring of urban rail operation, providing basis for decision-making with respect to rational speed limit, improvement of construction technology, and effective control of construction schedule, and safeguarding the normal operation of urban rail transit during tunnel construction. Recommendations were raised on application and improvement of the monitoring method.更多还原