Numerical Simulation of Dynamic Response and Evaluation of Flexural Damage of RC Columns under Horizontal Impact Load

Applied Sciences

卷:11

Jiabin Ye¹  Bin Hu²  Jian Cai² 

[1] Guangzhou Jishi Construction Group Co., Ltd., Guangzhou 510725, China;

[2] School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China;

关键词: horizontal impact;    numerical model;    reinforced concrete column;    dynamic response;    evaluation method;   

DOI  :  10.3390/app112311223

来源: DOAJ

【 摘 要 】

By using the ABAQUS finite element (FE) model, which has been verified by experiments, the deformation and internal force changes of RC columns during the impact process are investigated, and a parametric analysis is conducted under different impact kinetic energies E_k. According to the development path of the bottom bending moment-column top displacement curve under impact, the member is in a slight damage state when the curve rebounds before reaching the peak and in a moderate or severe damage state when the curve exceeds the peak, in which case the specific damage state of the member needs to be determined by examining whether there is a secondary descending stage in the curve. Accordingly, a qualitative method for evaluating the bending failure of RC column members under impact is obtained. In addition, the damage state of RC columns under impact can also be quantitatively evaluated by the ratio of the equivalent static load F_eq and the ultimate static load-bearing capacity F_su.

【 授权许可】

Unknown