Due to the space utilization and support requirements of shallow-buried rectangular tunnel in city, special treatment is needed for lining structure. More stable structure should be taken to prevent the influence of strong earthquake on the rectangular section of tunnel. ABAQUS finite element model was established to clarify the influence of fiber-reinforced concrete lining structure on the seismic performance of urban shallow-buried rectangular tunnel. Based on the design and engineering conditions, firstly C25 concrete was applied as lining structural materials. Then, the seismic effects of steel fiber concrete (SFRC) and steel-basalt hybrid fiber concrete (SBHFRC) as the lining structure are compared and analyzed. The influence of internal force is studied and compared by calculating the safety factors of the tunnel lining structure under the above three conditions. The results show that the seismic performance of the lining structure using SFRC is better than that of using SBHFRC. The results have important reference value for the seismic fortification design and related research of urban shallow-buried rectangle tunnels in strong earthquake area.

由于城市浅埋矩形隧道的空间利用和支护要求，衬砌结构需要特殊处理。为防止强地震对隧道矩形断面的影响，应采取更稳定的结构。建立ABAQUS有限元模型，阐明纤维混凝土衬砌结构对城市浅埋矩形隧道抗震性能的影响。根据设计和工程条件，首先采用C25混凝土作为衬砌结构材料。然后，对比分析了钢纤维混凝土（SFRC）和钢-玄武岩混合纤维混凝土（SBHFRC）作为衬砌结构的抗震效果。通过计算上述三种工况下隧道衬砌结构的安全系数，对内力的影响进行了研究和比较。结果表明，采用SFRC的衬砌结构抗震性能优于采用SBHFRC的衬砌结构。研究结果对强震区城市浅埋矩形隧道抗震设防设计及相关研究具有重要参考价值。