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作者:

Cao, Wanlin (Cao, Wanlin.) (学者:曹万林) | Niu, Haicheng (Niu, Haicheng.) | Zhou, Zhongyi (Zhou, Zhongyi.) | Dong, Hongying (Dong, Hongying.)

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摘要:

The eccentric compression performance of concrete filled circular steel tubular (CFCST) columns using high-strength recycled aggregate concrete (RAC) instead of normal concrete (NC) was studied through repeat load tests on four specimens in this paper. Four specimens were divided into two groups; the first set of two specimens included a CFCST column filled with RAC and a normal CFCST column, the eccentricity was 100 mm. The second group had the same specimens and the difference was that the eccentricity was 160 mm. Load-deformation and stress-strain curves as well as the strain distribution over the cross section were obtained through the experiment. The failure characteristic, load-bearing capacity, stiffness, ductility, energy dissipation and residual deformation of the specimens were analyzed. The obtained results are compared with the ultimate strengths of CFCST columns predicted by existing design codes. The test results indicate that damage development and failure mode of CFCST columns with RAC are similar to those of normal CFCST columns. The replacement of NC with RAC has beneficial effects on the load-carrying capacity and deformation properties. The strain distribution was found to accord well with the plane section assumption. With the incensement of eccentricity, the load-carrying capacity decreased, the stiffness degradation intensified, and the deformation ability improved. © 2015, Editorial Board of Journal of Harbin Institute of Technology. All right reserved.

关键词:

Aggregates Composite structures Compressive strength Concrete aggregates Deformation Energy dissipation High performance concrete High strength steel Load limits Loads (forces) Load testing Recycling Steel research Stiffness Stress-strain curves Tubular steel structures

作者机构:

  • [ 1 ] [Cao, Wanlin]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 2 ] [Niu, Haicheng]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 3 ] [Niu, Haicheng]School of Civil Engineering, Henan Polytechnic University, Jiaozuo; Henan; 454000, China
  • [ 4 ] [Zhou, Zhongyi]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
  • [ 5 ] [Dong, Hongying]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China

通讯作者信息:

  • [niu, haicheng]school of civil engineering, henan polytechnic university, jiaozuo; henan; 454000, china;;[niu, haicheng]college of architecture and civil engineering, beijing university of technology, beijing; 100124, china

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来源 :

Journal of Harbin Institute of Technology

ISSN: 0367-6234

年份: 2015

期: 12

卷: 47

页码: 31-36

被引次数:

WoS核心集被引频次: 0

SCOPUS被引频次: 6

ESI高被引论文在榜: 0 展开所有

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