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作者:

Zhang, Jianwei (Zhang, Jianwei.) (学者:张建伟) | Kan, Wenliang (Kan, Wenliang.) | Liu, Xiao (Liu, Xiao.) (学者:刘晓) | Cao, Wanlin (Cao, Wanlin.) (学者:曹万林) | Chen, Zeqiao (Chen, Zeqiao.)

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EI Scopus

摘要:

In this study,we investigated the seismic and resilience behaviors and damage controllability of steel-tube-reinforced high-strength concrete columns with different grades of high-strength steel bars. We conducted cyclic loading tests on three tube-reinforced high-strength concrete columns with a cross-section size of 600mm×600mm at a high axial force ratio. The steel bars used in the test specimens were HRB600 high-strength and 1200MPa ultra-high-strength steel bars. The ultra-high-strength longitudinal reinforcement configuration ratio and the stirrup spacing were the major variations in the design parameters of the test specimens. Based on the test results,we determined the failure mode,hysteretic behavior,bearing capacity,deformation capacity,stiffness degradation,energy dissipation capacity,and post-earthquake resilience behavior of each specimen. The results revealed that the steel-tube-reinforced high-strength concrete columns with the high-strength steel bars exhibited bending failure under cyclic loading. Increasing the ratio of the ultra-high-strength steel bars used in the longitudinal reinforcement could improve the ductility of the steel-tube-reinforced high-strength concrete columns and reduce the degree of damage after earthquake. Reducing the spacing of the stirrups could improve the seismic-energy-dissipation capacity of the steel-tube-reinforced high-strength concrete columns and also improve the ultimate deformation capacity,reduce the stiffness degradation rate,and suppress the development of concrete cracks. We provide a simplified method for calculating the bearing capacity of the steel-tube-reinforced high-strength concrete columns,the results of which show good agreement with the test results. © 2021, Editorial Board of Journal of Tianjin University(Science and Technology). All right reserved.

关键词:

Deformation Bearing capacity High strength steel Concrete testing Reinforced concrete Advanced high strength Steel Columns (structural) Stiffness Earthquakes Concrete construction Connectors (structural) Degradation Tubular steel structures Cyclic loads Hysteresis Bending strength High performance concrete Energy dissipation Steel testing Testing Bars (metal) Tubes (components)

作者机构:

  • [ 1 ] [Zhang, Jianwei]Key Laboratory of Urban and Engineering Security Disaster of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China
  • [ 2 ] [Kan, Wenliang]Key Laboratory of Urban and Engineering Security Disaster of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China
  • [ 3 ] [Liu, Xiao]Key Laboratory of Urban and Engineering Security Disaster of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China
  • [ 4 ] [Cao, Wanlin]Key Laboratory of Urban and Engineering Security Disaster of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China
  • [ 5 ] [Chen, Zeqiao]Key Laboratory of Urban and Engineering Security Disaster of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China

通讯作者信息:

  • 张建伟

    [zhang, jianwei]key laboratory of urban and engineering security disaster of china ministry of education, beijing university of technology, beijing; 100124, china

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来源 :

Journal of Tianjin University Science and Technology

ISSN: 0493-2137

年份: 2021

期: 2

卷: 54

页码: 144-153

被引次数:

WoS核心集被引频次: 0

SCOPUS被引频次: 2

ESI高被引论文在榜: 0 展开所有

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