Calculation method of the deflection of circular concrete filled steel tubular members under transverse impact load

被引：0
|
作者：
Liu Y. [1 ]
Zhao Y. [1 ]
Ci W. [1 ,2 ]
Wang Z. [1 ]
Wang L. [1 ]
Zhu W. [1 ]
Han D. [3 ]
机构：
[1] School of Civil Engineering, Southwest Jiaotong University, Chengdu
[2] Anhui Transport Consulting and Design Institute Co., Ltd., Hefei
[3] Department of Civil Engineering and Energy Technology Faculty of Technology, OsloMet-Oslo Metropolitan University, Oslo
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2021年 / 40卷 / 19期
关键词：
Concrete filled steel tube(CFST); Correction factor; Deflection; Theoretical derivation; Transverse impact;
D O I：
10.13465/j.cnki.jvs.2021.19.036
中图分类号：
学科分类号：
摘要：
In order to investigate the deflection of circular concrete-filled steel tubular (CFST) members subjected to transverse impact at any position, a theoretical formula for calculating the deflection of the members was derived based on the rigid-plastic assumption. The deflection test data of 55 CFST members under lateral impact were selected as statistical samples, and the correction factor was then obtained to correct the error caused by the difference between the rigid plastic hypothesis and the actual situation such as energy loss and local deformation. The applicable scope of the modified formula is: impact mass between 193.35 and 920.00 kg, impact velocity between 3.96 and 14.48 m/s. for sensitive factor, when both ends are fixed, the confinement factor is between 0.500 and 2.0; when the two ends are simply supported, the confinement factor is between 0.500 and 1.617; when the ends are fixed and simply supported, the confinement factor is between 0.500 and 1.307. The samples were expanded by means of numerical simulation to verify the accuracy of the formula, and the results of the formula were compared with those of simulation. The results show that the proposed modified formula exhibits reasonable accuracy with errors within 10%. © 2021, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：286 / 294
页数：8
相关论文
共 21 条
  • [1] (2007)
  • [2] SHI Yanli, HE Jiaxing, WANG Wenda, Et al., Anti-impact performance analysis for circular CFST members with inner circular steel tube, Journal of Vibration and Shock, 38, 9, pp. 123-132, (2019)
  • [3] WANG Xiaoyu, Cristoforo Demartino, XU Jinjun, Et al., Dynamic response of concrete filled steel tube column under lateral impact load: experimental study and calculation method, China Civil Engineering Journal, 50, 12, pp. 28-36, (2017)
  • [4] YANG Runlin, NIE Ting, BAI Nani, Study on impact-resistant performance of reinforced concrete beam with composite laminates, Journal of Vibration and Shock, 35, 4, pp. 199-203, (2016)
  • [5] (2012)
  • [6] BAMBACH M R, JAMA H, ZHAO X L, Et al., Hollow and concrete filled steel hollow sections under transverse impact loads, Engineering Structures, 30, 10, pp. 2859-2870, (2008)
  • [7] QU H, LI G, CHEN S, Et al., Analysis of circular concrete-filled steel tube specimen under lateral impact, Advances in Structural Engineering, 14, 5, pp. 941-951, (2011)
  • [8] SHAKIR A S, GUAN Z W, JONES S W., Lateral impact response of the concrete filled steel tube columns with and without CFRP strengthening, Engineering Structures, 116, pp. 148-162, (2016)
  • [9] (2005)
  • [10] WANG Rui, LI Zhu, REN Gouping, Et al., Studies on dynamic response of concrete filled steel tube under lateral impact loading, Engineering Mechanics, 6, pp. 75-80, (2008)
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