pass through mechanical model calculate, discover the vault and arch foot part in the tunnel secondary lining thickness is weakness part, so at the design and construction must strengthen these part.
通过力学模型计算,结构在拱脚与仰拱交接处以及拱顶部位为隧道二次衬砌混凝土结构的薄弱部位,设计和施工时应着重加强。