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Author:

Jia, Junfeng (Jia, Junfeng.) (Scholars:贾俊峰) | Wei, Bo (Wei, Bo.) | Ou, Jinping (Ou, Jinping.) | Li, Yisong (Li, Yisong.) | Cheng, Shoushan (Cheng, Shoushan.)

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EI Scopus CSCD

Abstract:

Based on the concept of seismic resilience design, combined with prefabricated structure technology, a self-centering prefabricated bridge pier structure with external replaceable energy dissipator was developed. The quasi-static cyclic loading tests for two groups of self-centering prefabricated pier model structures were conducted. The load-bearing behavior and damage process of a self-centering prefabricated pier in cyclic loading process were introduced, and its seismic performances, such as, force-displacement hysteresis curve, skeleton curve, energy dissipation capacity, tension change of prestressed reinforcement, residual displacement, joint opening, height of compression zone at the bottom of pier were analyzed. The results showed that the external energy dissipation components have good replaceability and energy dissipation capacity, pier seismic performance before and after replacement is basically the same; the force-displacement hysteretic curve of self-centering pier has obvious 'flag' shape with smaller residual displacement and good self-centering ability; with increase in horizontal displacement of pier top, tension of axial prestressed reinforcement inside pier increases linearly, and the prestress loss of prestressed reinforcement decreases after energy dissipator is replaced; the steel pipe wrapped around pier bottom can effectively restrain local concrete collapse, and the steel pipe has no damage, such as, local bulge. © 2021, Editorial Office of Journal of Vibration and Shock. All right reserved.

Keyword:

Reinforcement Seismology Steel pipe Energy dissipators Hysteresis Seismic design Model structures Cyclic loads Seismic waves Energy dissipation Bridge piers Connectors (structural)

Author Community:

  • [ 1 ] [Jia, Junfeng]MOE Key Lab of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 2 ] [Wei, Bo]MOE Key Lab of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 3 ] [Ou, Jinping]MOE Key Lab of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 4 ] [Ou, Jinping]School of Civil Engineering, Harbin Institute of Technology, Harbin; 150090, China
  • [ 5 ] [Li, Yisong]MOE Key Lab of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 6 ] [Cheng, Shoushan]Research Institute of Highway Ministry of Transport, Beijing; 100070, China

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Source :

Journal of Vibration and Shock

ISSN: 1000-3835

Year: 2021

Issue: 5

Volume: 40

Page: 154-162

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 17

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 13

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