Numerical analysis on dynamic responses of single-storey buildings under seismic effects

• Main Authors: Feng Hui Dong, Can Hong Lou, Yuan Liu, Bao Jiang Sun
• Format: Article
• Language: English
• Published: JVE International 2017-08-01
• Series: Journal of Vibroengineering
• Subjects: single storey building; power amplitude factors; damage analysis; dynamic characteristics; reinforced model
• Online Access: https://www.jvejournals.com/article/17392
• ISSN: 1392-8716; 2538-8460

The paper applies the commercial software ABAQUS to establish numerical models of an original single-storey building and a reinforced building, and conducts experimental test to verify correctness of the computation models. Damages and dynamic characteristics of two kinds of models under seismic effects are studied systematically. X-direction acceleration amplitudes of the wall obviously exceeded those in Y direction. In the same horizontal direction, accelerations of the left wall obviously exceeded those of the right wall. Compared with the original model, the X-direction acceleration amplitude is decreased by 15.4 %, and the Y-direction acceleration amplitude is decreased by 49 % in the left wall of the reinforced model. As for right wall of the reinforced model, the X-direction acceleration amplitude is decreased by 30.4 %, and the Y-direction acceleration amplitude is decreased by 17.6 %. In the X direction, the power amplification factors of the reinforced model were less than those of the original model, and the value was decreased by 30 % for the power amplification factors corresponding to 1.3 g. In the Y direction, the power amplification factors of the reinforce model were less than those of the original model under different seismic effects, wherein the value of the reinforced model was decreased by 33 % for the power amplification factors corresponding to 1.3 g compared with the original model. Under the seismic effect of 0.1 g, damages took place to four wall bodies of the model at earliest, but its value was small. With increased seismic input excitation, damage degree of the wall bodies was also gradually increased. Under the seismic effect of 0.8 g, damages to four wall bodies were serious. Under seismic effect of 1.3 g, damage values of 4 wall bodies reached the maximum value 0.99, and the single-storey building will fail. Damages values of four wall bodies of the original model were relatively concentrated; while damage values of four wall bodies of the reinforced model were disperse. Under each seismic effect, the overall damage value was smaller than that of the reinforced model. This result fully indicates that reinforcement can reduce damages of wall bodies and generate anti-seismic effects.