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作者:

Zhang, Jianwei (Zhang, Jianwei.) (学者:张建伟) | Yang, Hong (Yang, Hong.) | Zhang, Man (Zhang, Man.) | Liu, Xiao (Liu, Xiao.)

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Scopus SCIE

摘要:

A type of recycled aggregate concrete shear wall was proposed in this work, which used the painted ultra-high-strength steel (UHSS) reinforcements with low bond strength and high yield strength in the boundary elements. For investigating the seismic resistance and resilient performance of this shear wall, six shear walls with the shear-to-span ratio of 1.5 were fabricated and tested under the cyclic loads. The variables studied in this paper were the types of the longitudinal reinforcement in the boundary elements, the existence of steel fibers, the presence of the concealed bracings (X-shaped) and the different axial compression ratios. The test results indi-cated that specimens with the UHSS reinforcement in the boundary elements decreased the residual deformation substantially and improved the resilient properties. The higher axial compression ratio enhanced lateral force resistance of shear wall but aggravated concrete damage which was adverse to the resilience. In addition, the utilization of steel fibers in concrete significantly reduced the crack width. The shear wall including concealed bracing not only showed much higher lateral force resistance, but also had desirable resilient performance under the large deformation. Finally, a simplified calculation model for such shear walls was proposed on the basis of experiment. And the good accuracy of the calculation model was verified by comparing the calculation results and the measured results.

关键词:

Ultra-high-strength reinforcement Seismic performance Resilience Mid-rise shear wall High strength recycled aggregate concrete

作者机构:

  • [ 1 ] [Zhang, Jianwei]Beijing Univ Technol, Key Lab Urban Secur, Disaster Engn Minist Educ, Beijing, Peoples R China
  • [ 2 ] [Yang, Hong]Beijing Univ Technol, Key Lab Urban Secur, Disaster Engn Minist Educ, Beijing, Peoples R China
  • [ 3 ] [Zhang, Man]Beijing Univ Technol, Key Lab Urban Secur, Disaster Engn Minist Educ, Beijing, Peoples R China
  • [ 4 ] [Liu, Xiao]Beijing Univ Technol, Key Lab Urban Secur, Disaster Engn Minist Educ, Beijing, Peoples R China

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来源 :

STRUCTURES

ISSN: 2352-0124

年份: 2022

卷: 41

页码: 36-50

4 . 1

JCR@2022

4 . 1 0 0

JCR@2022

JCR分区:2

中科院分区:3

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