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作者:

Zhang, Jianwei (Zhang, Jianwei.) (学者:张建伟) | Li, Chen (Li, Chen.) | Feng, Caojie (Feng, Caojie.) | Lu, Dechun (Lu, Dechun.) (学者:路德春)

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摘要:

In order to investigate the seismic behavior of high-performance concrete columns with HRB600 steel bars, reversed cyclic load tests on six high-strength concrete columns with square section of 600 mm×600 mm were carried out under high axial compressive forces. The specimens included two normal concrete columns with HRB600 steel bars and four steel fiber concrete columns with HRB600 steel bars. The failure modes, hysteretic properties, bearing capacity, stiffness degradation, ductility and energy dissipation capacity of the test specimens were compared and analyzed. A restoring force model for steel fiber high-strength concrete column with HRB600 steel bars was established based on the test results. The results show that steel fibers can reduce the crack width of the high-strength concrete columns, prevent the concrete cover from peeling off, decrease the residual deformation of the columns and improve their restorability after earthquakes. The steel fiber high-strength concrete columns with HRB600 steel bars have good deformation capacity, and furthermore, the displacement ductility coefficient increases with the increase of the steel fiber content. The restoring force model of the steel fiber reinforced concrete columns with HRB600 steel bars based on experimental data is calculated accurately, and this kind of columns have good seismic performance and can satisfy the requirements of the seismic design code, making them suitable for engineering application. © 2019, Editorial Office of Journal of Building Structures. All right reserved.

关键词:

Bars (metal) Columns (structural) Concrete construction Concrete testing Connectors (structural) Cyclic loads Deformation Ductility Energy dissipation Fiber reinforced concrete High performance concrete High strength steel Load testing Seismic design Seismic response Seismic waves Steel fibers Steel testing Stiffness

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 ] [Li, Chen]Key Laboratory of Urban and Engineering Security Disaster of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China
  • [ 3 ] [Feng, Caojie]Key Laboratory of Urban and Engineering Security Disaster of China Ministry of Education, Beijing University of Technology, Beijing; 100124, China
  • [ 4 ] [Lu, Dechun]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 Building Structures

ISSN: 1000-6869

年份: 2019

期: 10

卷: 40

页码: 113-121

被引次数:

WoS核心集被引频次: 0

SCOPUS被引频次: 8

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

近30日浏览量: 4

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