Experimental study on three-dimensional reinforced concrete frames subjected to dynamic loading

Structures ◽  
2020 ◽  
Vol 24 ◽  
pp. 835-850
Author(s):  
Fatih Bahadir
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Dynamic Loading ◽  
Three Dimensional ◽  
Concrete Frames ◽  
Reinforced Concrete Frames

scholarly journals ANALYSIS OF NONLINEAR STATIC-DYNAMIC DEFORMATION OF REINFORCED CONCRETE FRAMES IN OUT-OF-LIMIT STATES

2021 ◽  
pp. 20-35
Author(s):  
N. V. Fedorova ◽  
Ngoc Tuyen Vu ◽  
M. D. Medyankin
Keyword(s):  
Experimental Data ◽  
Reinforced Concrete ◽  
Dynamic Loading ◽  
Computational Analysis ◽  
Dynamic Deformation ◽  
Limit State ◽  
Concrete Frames ◽  
Limit States ◽  
Reinforced Concrete Frames ◽  
Nonlinear Static

Statement of the problem. The article presents a computational model, an algorithm for computational analysis and the results of calculating the nonlinear static-dynamic deformation of reinforced concrete frames in out-of-limit states caused by the sudden removal of one of the supporting structures. Results. To design a numerical model of the static-dynamic loading mode of a structural system, the LS-DYNA software package was used that makes use of a detailed 3D model implementing an explicit finite element method. During the computational analysis, the physical and mechanical characteristics of the deformation of materials were taken in three variants: those obtained based on the experimental data by G. A. Geniev, the experimental data by N. V. Fedorova and M. D. Medyankin under the static-dynamic uniaxial testing mode of a limited number of standard samples of prisms and according to the Russian standards SP (СП) 385.1325800.2018. Conclusions. Numerical analysis of the static-dynamic deformation of the reinforced concrete framerod system of a multi-storey building has established that the differentiated accounting of the quantitative value of the concrete viscosity modulus and, accordingly, the time and level of static-dynamic loading of the structure allows one to identify the criteria for the special limit state of the elements of reinforced concrete structural systems of buildings and structures in a more rigid manner.

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