Time Analysis of Building Dynamic Response Under Seismic Action. Part 2: Example of Calculation

International Conference on Construction, Architecture and Technosphere Safety 2017

土木建筑工程

Ufimtcev, E.M.^1

Department of Construction Industry and Theory of Structures, South Ural State University, Lenin Avenue, 76, Chelyabinsk

454080, Russia^1

关键词: Building dynamics;    Cantilever rod;    Computational model;    Forced oscillations;    Natural oscillation;    Numerical approaches;    Reaction parameters;    Seismic regions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/262/1/012034/pdf
DOI  :  10.1088/1757-899X/262/1/012034

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The second part of the article illustrates the use of the time analysis method (TAM) by the example of the calculation of a 3-storey building, the design dynamic model (DDM) of which is adopted in the form of a flat vertical cantilever rod with 3 horizontal degrees of freedom associated with floor and coverage levels. The parameters of natural oscillations (frequencies and modes) and the results of the calculation of the elastic forced oscillations of the building's DDM - oscillograms of the reaction parameters on the time interval t ∈ [0; 131,25] sec. The obtained results are analyzed on the basis of the computed values of the discrepancy of the DDS motion equation and the comparison of the results calculated on the basis of the numerical approach (FEM) and the normative method set out in SP 14.13330.2014 "Construction in Seismic Regions". The data of the analysis testify to the accuracy of the construction of the computational model as well as the high accuracy of the results obtained. In conclusion, it is revealed that the use of the TAM will improve the strength of buildings and structures subject to seismic influences when designing them.