Transport infrastructure, such as tunnels and underground structures, are usually built using reinforced concrete solutions. Since the 1970s, many transport structures (culverts, bridges, tunnels and animal crossings) have been made from corrugated steel plates and surrounding backfill (also known as soil-steel structures). These structures are a good alternative to reinforced concrete solutions because they can be built rapidly with substantial 40–50% cost savings. The behaviour of soil-steel structures under typical static and dynamic loads is reasonably well recognised. However, the seismic analysis of these structures is usually conducted in a limited range, mainly for small culverts. Therefore, it is important to know how soil-steel composite tunnels behave under seismic excitations. The analysis in this work was made for the Tolpinrud railway tunnel in Norway. The paper presents the numerical analysis under seismic excitations using the DIANA FEA program based on the finite element method. Non-linear models with the El Centro and Ancona records were used to analyse the problem. Four different numerical models of the tunnel were considered. The paper analyses two methods of modelling the steel shell of the tunnel and the impact of using reinforced concrete (RC) beams to strengthen the shell. In models I and II, the shell was modelled as corrugated, and in models III and IV as flat. Additionally, it was found that the influence of additional RC beams (models II and IV) is negligible. Moreover, significant frequencies caused by given seismic excitations were determined. It was also found that the use of destructive earthquakes of similar intensity and different duration caused a low level of stresses in the soil-steel tunnel models. As a result of the conducted research, it was recommended that model I is the most suitable for this type of analysis. The obtained results can help recognise the behaviour of such tunnels located in seismic areas.

通常使用钢筋混凝土解决方案来建设运输基础设施，例如隧道和地下结构。自1970年代以来，许多运输结构（涵洞，桥梁，隧道和动物过境点）都是由波纹钢板和周围的回填物（也称为土壤钢结构）制成的。这些结构可以很好地替代钢筋混凝土解决方案，因为它们可以快速建造，节省了40％至50％的成本。可以很好地认识到土-钢结构在典型的静态和动态载荷下的行为。但是，这些结构的地震分析通常在有限的范围内进行，主要是针对小涵洞。因此，重要的是要了解土-钢复合隧道在地震激励下的行为。这项工作是针对挪威的Tolpinrud铁路隧道进行的分析。本文利用基于有限元方法的DIANA FEA程序，给出了地震激励下的数值分析。使用带有El Centro和Ancona记录的非线性模型来分析问题。考虑了四种不同的隧道数值模型。本文分析了隧道钢壳建模的两种方法以及使用钢筋混凝土（RC）梁加固壳的影响。在模型I和II中，壳体建模为波纹状，在模型III和IV中，壳体建模为扁平状。此外，还发现附加的RC梁（模型II和IV）的影响可以忽略不计。此外，确定了由给定地震激励引起的显着频率。还发现使用相似强度和不同持续时间的破坏性地震在土-钢隧道模型中引起了较低的应力水平。作为进行研究的结果，建议模型I最适合这种类型的分析。获得的结果可以帮助识别位于地震区域的这种隧道的行为。