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近几年来,随着城市化进程的不断加快,人流、车辆日益增加,原有的路面交通已不能满足城镇化进程。因此,为了适应城市经济发展,方便人们出行,许多城市开始对旧路进行大修或扩建,下穿隧道已成为城市道路改造的一种趋势,可有效提升城市交通量。本文首先分析有限元法,然后阐述城市下穿隧道设计原则、标准及难点,最后实例探讨有限元法在城市下穿隧道设计中的应用。
In recent years, as the process of urbanization continues to accelerate, pedestrian flow and vehicles are increasing day by day, the original road traffic can no longer satisfy the urbanization process. Therefore, in order to adapt to the urban economic development and facilitate people’s travel, many cities began overhauling or expanding the old roads. The tunneling under the tunnels has become a trend of urban road reconstruction, which can effectively enhance urban traffic. In this paper, the finite element method is first analyzed, and then the design principles, standards and difficulties of underpass tunnels are elaborated. Finally, the application of finite element method in tunnel design of underpass tunnels is discussed.