INFLUENCE OF BASE SUBSTANTIAL DIFFERENTIAL SETTLEMENTS ON STRUCTURAL SYSTEMS SEISMIC STABILITY LEVEL
Journal Title: Вісник Національного Авіаційного Університету - Year 2016, Vol 68, Issue 3
Abstract
Introduction: Urgent question of base substantial differential settlements influence by different origin on building structural systems seis mic stability is considered in the article. The aim of research is estimate of such influence degree. Selection of analysis method: It had been suggested to use of nonlinear static analysis by the spectrum capacity method for analysis and then this method was used. Numerical estimate of base substantial differential settlements influence on structural system seismic stability: Numerical experiment which shows degree of seismic stability reduc tion depending of base differential se ttlements level is introduced. The experiment was made on the ground of wall system model of complex masonry and also reinforced concrete constructions. Nonlinear analysis was done on the co nsecutive influence of base differential slumping deformations and horizontal seismic loads. Consideration of the analysis results and conclusions: Consequently it was revealed, that force influence of base substantial differential settlements is able to significant reduce seismic stability of construction systems (from 1 inte nsity degree down to practically completely loss of seismic st ability). This fact determines necessity of accounting of base substantial differential settlements and seismic force influence combination when there is capab ility of occurrence both of them. In this case, it is necessary to take into account sequential influence of th e loads and also recommended using of nonlinear analysis by the principles of the capacity spec trum method. It is also ne cessary to specify level of inelastic deformations and damages evoluti on by experimentally confirmed values
Authors and Affiliations
Denуs Khokhlin
Keywords
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- EP ID EP461401
- DOI 10.18372/2306-1472.68.10909
- Views 153
- Downloads 0
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