Reference Type: Journal Article Record Number: 1 Author: Kang, Xiang-jie, Liu, Yan-hui, Zhao, Lei, Yu, Zhi-xiang, Zhao, Shi-chun and Tang, Heng Year: 2019 Title: DYNAMIC RESPONSE ANALYSIS METHOD FOR THE PEAK VALUE STAGE OF CONCRETE-FILLED STEEL TUBE BEAMS UNDER LATERAL IMPACT Journal: Advanced Steel Construction Volume: 15 Issue: 4 Pages: 329-337 Date: Dec Type of Article: Article Short Title: DYNAMIC RESPONSE ANALYSIS METHOD FOR THE PEAK VALUE STAGE OF CONCRETE-FILLED STEEL TUBE BEAMS UNDER LATERAL IMPACT Alternate Journal: Adv. Steel Constr. ISSN: 1816-112X DOI: 10.18057/IJASC.2019.15.4.4 Keywords: Lateral impact Dynamic response Concrete filled steel tube Calculation method Peak value stage Abstract: This paper proposes a dynamic response analysis method of concrete-filled steel tube (CFST) beams at the peak value stage under lateral impact load. Targeted calculation of the peak value stage, finite element analysis (FEA) was carried out to determine the calculation model suitable for the analysis of the peak value stage and the simplified trend curve of beam acceleration at the impact point. Then, an analysis method for calculating the dynamic response of a fixed-fixed supported CFST beam is proposed, which consists of the travelling hinge theorem and a prediction model of the simplified trend curve. The predicted simplified trend curve is applied to replace the motion constraint assumption of the impactor and beam in the travelling hinge model. In the meantime, the elastoplastic behaviour of the CFST beams is considered in the analysis process. Through the comparison of experimental results and analysis results, this analysis method can predict the time history curves of the acceleration and impact force of CFST beams reasonably. Author Address: Xiang-jie Kang 1, Yan-hui Liu 1,*, Lei Zhao 2, Zhi-xiang Yu 1,3, Shi-chun Zhao 1,3 and Heng Tang 1 1 School of Civil Engineering, Southwest Jiaotong University, Chengdu, China 2 Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China 3 National Engineering Laboratory for prevention and control of geological disasters in land transportation, Chengdu, China * (Corresponding author: E-mail: liuyanhui00@126.com) Language: English