Dynamic analysis of multilayer-reinforced concrete frame structures based on NewMark-β method
Author:
Liu Yizhe1, Zhang Bofang1, Wang Ting1, Su Tian1, Chen Hanyang2
Affiliation:
1. Department of Civil Engineering, School of Civil and Architectural Engineering, Shandong University of Technology , 266 Xincun West Road, Zibo , Shangdong , 255000 , China 2. School of Computer Science and Technology, Shandong University of Technology , 266 Xincun West Road, Zibo , Shangdong , 255000 , China
Abstract
Abstract
The analysis method of the simplified structure formation model provides the basis for the analysis of the reinforced concrete (RC) structure under earthquake and dynamic load, which has important significance for seismic analysis of RC structure. In this paper, the three-layer RC frame structure is simulated and analyzed by MATLAB based on the NewMark-β method, considering the influence of time-varying simple harmonic loads and seismic waves on acceleration, displacement, and velocity of RC structure. The vibration response of the RC structure is analyzed by introducing the stiffness reduction coefficient. The results show that NewMark-β method provides a new idea for the seismic response of RC frame structures, making the seismic analysis of frame structures more practical; the variation range of its elastic modulus is obtained through the analysis of the constitutive model of RC, which provides the basis for the value of the stiffness coefficient; the application of the top load and the bottom load has different structural responses to the RC frame structure, and the impact of the load on the structure is more adverse when the load acts on the bottom; with the change of time, the binding stiffness coefficient will also change, and the stability of the structure will decrease greatly; the function relationship between the acceleration of the third floor and the reduction coefficient of rigidity is obtained by taking different values of the reduction coefficient of rigidity.
Publisher
Walter de Gruyter GmbH
Subject
Condensed Matter Physics,General Materials Science
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