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author:

Yan, Xueyuan (Yan, Xueyuan.) [1] (Scholars:颜学渊) | Lin, Cihang (Lin, Cihang.) [2] | Liu, Xuhong (Liu, Xuhong.) [3] | Zheng, Tianxiao (Zheng, Tianxiao.) [4] | Shi, Shen (Shi, Shen.) [5] | Mao, Huimin (Mao, Huimin.) [6]

Indexed by:

EI Scopus SCIE

Abstract:

A building may be subjected to a variety of accidental loads during its service life. Partially precast concrete (PC) beams are a primary structural component. Their impact resistance can have a substantial impact on the overall safety of a structure when it is subjected to an impact load. In this study, numerical analyses were performed on the dynamic response of PC beams strengthened with bonded steel plates subjected to impact loading. The model was verified from four aspects: energy conversion, failure form, impact force-time history curve, and midspan displacement-time history curve. The dynamic response eigenvalues of the peak impact force, peak midspan displacement, and residual midspan displacement were compared between the numerical simulations and experimental tests. The relative inaccuracy of the peak impact force ranged from 9.51% to 14.0%, with an average value of 11.9%. The average relative error for the midspan displacement was -0.09%, with the greatest relative errors varying between -0.64% and 0.3%. The residual value errors of the midspan displacement ranged from -0.95% to 2.38%, with an average relative error of 0.94%. On this basis, the effects of the impact mass, impact height, width, and length of the bonded steel plate on the impact resistance of the components were evaluated. Furthermore, the differences in the equivalent plastic strain contours, impact force-time history curves, and midspan displacement-time history curves under different parameters were compared. The results demonstrated that the failure modes and flexural deformations of the test beams were influenced by the impact mass and impact height. The increase in the length and width of the steel plate had no effect on the impact force response, but the peak and residual values of the midspan displacement decreased, which could significantly increase the impact resistance of the beams. Lastly, the impact mass m, the impact height h, the thickness t of the bonded steel plate, the length of the bonded steel plate h(s), and the width of the bonded steel plate b(s) were all taken into account in the fitting formula. These five parameters were used to predict the peak impact force response, the peak value of the midspan displacement, and the residual value of the midspan displacement. The results demonstrated that the fitting formula had small errors and could accurately reflect the dynamic responses of the PC beams strengthened with bonded steel plates under impact loading.

Keyword:

bonded steel plate impact resistance numerical analyses partially precast concrete beam

Community:

  • [ 1 ] [Yan, Xueyuan]Fuzhou Univ, Coll Civil Engn, Fuzhou 350116, Peoples R China
  • [ 2 ] [Lin, Cihang]Fuzhou Univ, Coll Civil Engn, Fuzhou 350116, Peoples R China
  • [ 3 ] [Zheng, Tianxiao]Fuzhou Univ, Coll Civil Engn, Fuzhou 350116, Peoples R China
  • [ 4 ] [Shi, Shen]Fuzhou Univ, Coll Civil Engn, Fuzhou 350116, Peoples R China
  • [ 5 ] [Liu, Xuhong]Fujian Univ Technol, Fujian Prov Key Lab Adv Technol & Informatizat Civ, Fuzhou 350118, Peoples R China
  • [ 6 ] [Mao, Huimin]Fujian Univ Technol, Sch Ecol Environm & Urban Construct, Fuzhou 350118, Peoples R China

Reprint 's Address:

  • [Liu, Xuhong]Fujian Univ Technol, Fujian Prov Key Lab Adv Technol & Informatizat Civ, Fuzhou 350118, Peoples R China;;

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Source :

BUILDINGS

ISSN: 2075-5309

Year: 2023

Issue: 3

Volume: 13

3 . 1

JCR@2023

3 . 1 0 0

JCR@2023

ESI Discipline: ENGINEERING;

ESI HC Threshold:35

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 2

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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