SEISMIC RESPONSE OF LONG UNDERGROUND STRUCTURES: VALIDITY OF ENGINEERING APPROACHES AND INCOMPETENCE OF AN ANALOGY WITH OVER GROUND CONSTRUCTIONS

Authors:  
Rubric:     Seismic safety and seismic isolation of buildings   
Annotation:
The existing engineering approaches in seismodynamics of long underground structures are presented: the theory of full contact without relative displacement at soil-structure interface, the approaches are related to modeling of the soil-structure interaction by simple deformable elements, and the approaches based on hypotheses about nature of the "laws" describing this interaction. Based on the exact statement of the problems, ranges of applicability of the engineering approaches are clarified. It is shown, that translation of the methods developed for above ground constructions to underground structures is not competent and may introduce errors.