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作者:

Zhang, Jianwei (Zhang, Jianwei.) (学者:张建伟) | Li, Xiangyu (Li, Xiangyu.) | Cao, Wanlin (Cao, Wanlin.) (学者:曹万林) | Yu, Cheng (Yu, Cheng.)

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EI SCIE

摘要:

An innovative shear wall was proposed, which was composed of high-strength concrete and steel rebars, as well as concrete-encased CFST columns embedded at boundary elements. To study the cyclic and resilient behavior of the proposed wall, four walls with shear span ratios of 2.2 were designed and tested under quasi-static cyclic loads. The test parameters were the type of longitudinal bars at boundary elements, the presence of steel fibers, and the axial compression ratio. As test results showed, within the limit of axial compression ratio, the proposed shear walls had small residual deformation until a 2% loading drift ratio; after that, the hysteresis curve became full and the energy dissipation capacity increased, indicating the desirable collapse resistance. Specifically, the use of ultra-high strength longitudinal bars at boundary elements significantly decreased the residual de-formation and improved the reparability. In addition, steel fibers effectively enhanced the deformation capacity of the proposed walls. Finally, given the confined effects of CFST columns and stirrups on concrete, a prediction model for the lateral load-bearing capacity was established. The comparison between predicted and test results from this study and existing research verified the good accuracy of this model.

关键词:

Composite shear wall Concrete-encased concrete filled steel tube (CFST) columns High-strength steel rebars Reparability Seismic performance Steel fiber reinforced high-strength concrete

作者机构:

  • [ 1 ] [Zhang, Jianwei]Beijing Univ Technol, Fac Urban Construct, Beijing, Peoples R China
  • [ 2 ] [Li, Xiangyu]Beijing Univ Technol, Fac Urban Construct, Beijing, Peoples R China
  • [ 3 ] [Cao, Wanlin]Beijing Univ Technol, Fac Urban Construct, Beijing, Peoples R China
  • [ 4 ] [Yu, Cheng]Univ North Texas, Dept Engn Technol, Denton, TX 76207 USA

通讯作者信息:

  • 张建伟

    [Zhang, Jianwei]Beijing Univ Technol, Fac Urban Construct, Beijing, Peoples R China;;[Li, Xiangyu]Beijing Univ Technol, Fac Urban Construct, Beijing, Peoples R China

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来源 :

ENGINEERING STRUCTURES

ISSN: 0141-0296

年份: 2020

卷: 220

5 . 5 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:28

JCR分区:1

被引次数:

WoS核心集被引频次: 19

SCOPUS被引频次: 15

ESI高被引论文在榜: 0 展开所有

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