STRESS-STRAIN STATE OF THE CONSTRUCTION OF A SUBWAY TUNNEL UNDER SEISMIC IMPACTS

Abstract

Abstract. The article presents a study of the stress–strain state of the construction
of a deep-laid subway distillation tunnel. The results of calculations of the tunnel lining
taking into account the seismic impact of the soil are presented. Based on the above
calculation results, the determination of 5 frequencies and forms of natural oscillations
of the tunnel lining system with soil. The results of calculations showed that the first
frequencies are low. They are taken into account when determining internal efforts and
movements. It can be seen that with increasing depth of laying, horizontal and vertical
movements over the tunnel decrease.