轨道交通明挖矩形隧道曲线地段建筑限界的计算

在总结目前国内轨道交通限界计算方法研究的基础上,说明了建筑限界计算方法研究的必要性和重要性。提出了明挖矩形隧道直线段、平曲线地段建筑限界计算方法, 给出了缓和曲线地段建筑限界计算的方法和公式的推导,并结合算例进行了探讨。

Calculation of the Structure Clearance for Rectangular Tunnel in Urban Rail Transit

Based on the studies of clearance calculation in urban rail transit, this paper discusses the importance of the calculation methods, such as the calculation of the structure clearance on the lines and plane curves,especially on the transition zones of curve in the open-cut rectangular tunnel, and the pertinent formula combined with practical examples. The author argues that this method,because of the scientific and economic advantages, will have some reference value.