当前中国处于轨道交通发展的黄金时期中国区域均衡化和一体化进程加速,中心城市之间、城市群内部的人流和物流需求强劲,对交通基础设施承载能力提出更高要求。以高速铁路、城市轨道交通为代表的轨道交通具有运量大、速度快、安全、准点等优势,可以有效缓解城市人口不断增加带来的交通运输压力;高速铁路安全、快 At present, China is in a golden period of rapid development of rail transport. The process of regionalization and integration in China is accelerating. The demand for people and logistics inside central cities and within urban agglomerations is strong, putting higher demands on the carrying capacity of transportation infrastructure. Rail transit, represented by high-speed railway and urban rail transit, has the advantages of large capacity, fast speed, safety and punctuality, which can effectively relieve the traffic pressure brought by the increasing urban population. The safety of high-speed railway