Investigation of Framework Behaviour Depending on the Selected Material in Permafrost and Seismic Conditions

Abstract

AbstractDifficult construction conditions arise in areas of combined permafrost and high seismic activity. The difficulties do not only arise in the selection of foundations and structural substrate but also in adopting the appropriate structural building system being very varied. Frame systems are known to be the most common in the construction of buildings, with significant advantages. These systems, however, have serious drawbacks most pronounced during earthquakes in the form of damage to frame joints. The article assesses the earthquake resistance of the framework with permafrost soils in its base. Five-story frame buildings made of reinforced concrete, metal and wood were selected for the study. Permafrost soils are represented by loams. Soil thawing has been found to have an effect on the earthquake resistance of the frame. A steel frame was found to be the most stable of the frame types examined. The stress-strain state of the different frame types, however, varies in the process of soil thawing, indicating the need to provide for monitoring of the building structures and, if necessary, to apply additional structural measures to increase their seismic resistance.KeywordsFramesReinforced concreteMetalWoodPermafrostSeismic