ARTICLE
Numerical study on the dynamic response of a concrete filled steel tubular long column under axial impact by a rigid-body
Han QI 1,   Shuohui CHEN 1,   Jianlei ZOU 2,   Huidi ZHANG 3,   Mengsha LIU 3,   Jinsan JU 3,   Xiuxing SANG 4  
 
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1
Beijing No. 3 Construction Engineering Co., Ltd., China
2
Beijing Mechanized Construction Group Co., Ltd, Beijing, China
3
China Agricultural University, Department of Civil Engineering, Beijing, China
4
Beijing Construction Engineering Group Co., Ltd, Beijing, China
CORRESPONDING AUTHOR
Xiuxing SANG   

Beijing Construction Engineering Group Co.,Ltd., Beijing, Beijing, China
Submission date: 2021-03-08
Final revision date: 2021-04-29
Acceptance date: 2021-05-17
Online publication date: 2021-10-01
Publication date: 2021-10-20
 
Journal of Theoretical and Applied Mechanics 2021;59(4):551–563
 
KEYWORDS
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ABSTRACT
In this study, refined finite element models of concrete filled steel tubular long columns with length diameter ratio (L/D) of 50 were established, and their dynamic responses under a rigid-body impact were explored. It is found that the form of impact load is only related to and can be predicted from the impact velocity of the rigid-body. The change of axial stress and strain with time is synchronous with that of the impact load. Furthermore, the variation characteristics of axial stress and strain with time are mainly related to the initial velocity of the rigid-body.
 
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