TY JOUR TI On the issue of ensuring the safety of buildings on permafrost soils KW permafrost soil KW bored piles KW deformation KW shell foundations KW load-bearing structures JO Siberian Fire and Rescue Bulletin AU Amelchugov, S.P. AU SHubkin, R.G. AU Amelchugov, S.V. AU Elfimova, M.V. AU Nikulin, M.A. PY 2021 IS 2021 PB FSBEE HE Siberian Fire and Rescue Academy EMERCOM of Russia