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Author:

Zhang, Jianwei (Zhang, Jianwei.) (Scholars:张建伟) | Wang, Siyuan (Wang, Siyuan.) | Zhang, Man (Zhang, Man.) | Sun, Yuping (Sun, Yuping.) | Wang, Hongwei (Wang, Hongwei.)

Indexed by:

EI Scopus SCIE

Abstract:

In this paper, weakly bonded ultra-high-strength steel bars (DHSS) were used as longitudinal reinforcement in recycled aggregate concrete shear walls to achieve resilient performance. The study evaluated the repairability and hysteresis performance of shear walls before and after retrofitting. Quasi-static tests were performed on recycled aggregate concrete (RAC) and steel fiber reinforced recycled aggregate concrete (FRAC) shear walls to investigate the reparability of resilient shear walls when loaded to 1% drift ratio. Results showed that shear walls exhibited drift-hardening properties. The maximum residual drift ratio and residual crack width at 1% drift ratio were 0.107% and 0.01mm, respectively, which were within the repairable limits. Subsequently, shear walls were retrofitted with bonded X-shaped CFRP strips and steel plates wrapped at the bottom and retested. Except for a slight reduction in initial stiffness, earthquake-damaged resilient shear walls retrofitted with a composite method still had satisfactory hysteresis performance. A revised damage assessment index D, has been proposed to assess of damage degree. Moreover, finite-element analysis for the shear wall before and after retrofit retrofitting was established in OpenSees and verified with experimental results. The finite element results and test results were in good agreement. Finally, parametric analysis was performed.

Keyword:

resilient shear walls retrofit hysteresis performance damage assessment carbon-fiber0reinforced polymers

Author Community:

  • [ 1 ] [Zhang, Jianwei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 2 ] [Wang, Siyuan]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Zhang, Man]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 4 ] [Wang, Hongwei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 5 ] [Sun, Yuping]Kobe Univ, Grad Sch Engn, Dept Architecture, Kobe 6578501, Japan

Reprint Author's Address:

  • [Zhang, Jianwei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China;;[Wang, Siyuan]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China;;

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Source :

STEEL AND COMPOSITE STRUCTURES

ISSN: 1229-9367

Year: 2024

Issue: 3

Volume: 52

Page: 357-376

4 . 6 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

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