中美隧道二次衬砌结构设计规范对比研究

隧道设计规范是开展设计工作的依据，将我国隧道相关设计规范与国际先进国家技术标准对标，有助于提高我国工程建设企业的国际化竞争力。通过文献调研和计算分析对比研究了中美隧道二次衬砌结构设计的异同，并且从设计准则、极限状态划分、设计使用年限、材料特性、荷载分类和组合以及结构设计方法等方面展开对比，结合工程实例研究分析，结果表明：《公路隧道设计规范》（JDG 3370.1—2018）的设计参数更加保守、安全，能更好的保证隧道衬砌结构的安全性和耐久性，更有利于隧道二次衬砌的长期安全服役。

Comparative Study on Design Specifications for Secondary Lining Structure of Tunnel between China and USA

Tunnel design specifications are the basis for carrying out design work. The comparison of the related design specifications of tunnel in China with the technical standards of the international advanced countries can be conductive to improve the international competitiveness of the engineering construction enterprises in China. By the literature research, calculation and analysis, the similarities and differences in the design of secondary lining structure of tunnel between China and the United States are analyzed and compared mainly from the design criteria, limit state division, design service life, material characteristics, load classification and combination, and structural design methods. And combined with the engineering examples, the research and analysis are carried out. The results indicate that the design parameters of the tunnel regulations in China are more conservative and safe, which can better ensure the safety and durability of the tunnel lining structure, and is more conducive to the long-term service safety of the tunnel secondary lining, which provides the technical reference for the domestic infrastructure industry to expand into the international market.