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1985年在修订铁道部标准设计规范时,明文规定了“……行车速度高于120 km/h的铁路,应在设计任务书中提出要求,其设计标准另行规定”。意思非常明确,按现行规范设计的桥隧建筑物只适应车速小于或等于120km/h。
When it revised the Ministry of Railways standard design specifications in 1985, it explicitly stipulated that “... a railway with a traveling speed higher than 120 km / h shall make a request in the design task book and its design standards shall provide otherwise.” The meaning is very clear, according to the current design of the bridge and tunnel buildings only adapt to the speed less than or equal to 120km / h.