行车速度与建筑限界是盾构过江通道建设规模和运营安全的重要影响因素，以泰州过江通道为依托，并从隧道内的驾驶特性、交通安全、国内外实际情况、通行能力与工程造价等技术和经济的多个角度，对建筑限界的横向宽度进行对比论证，并结合实际交通组成，提出了泰州盾构过江通道的建筑限界与行车速度的可行方案。

Traveling speed and structure gauge are critical factors that have great impact on the construction scale and operation safety of Yangtze river crossing shield tunnels. Taking Taizhou Yangtze river crossing tunnel as project case, the paper makes expatiations on the transverse width of the structure gauge of the tunnel in respect of the driving features inside tunnels, traffic safety, foreign and domestic practices, traffic passing capacity and construction cost. On basis of the composition of the traffics, the paper furthermore recommends feasible options of structure gauges and traveling speeds for Taizhou Yangtze crossing shield tunnel.