Seismic stress state of "Earth bed -foundation" system S. B. Shayakhmetov, S. B. Kystaubayev, K. S. Lesov and K. K. Umarov E3S Web of Conf., 401 (2023) 01083 Published online: 11 July 2023 DOI: 10.1051/e3sconf/202340101083