Seismic Behavior of High-Strength Concrete Square Short Columns Confined in Thin Steel Shell

  • Han, Byung-Chan (Dept. of Architectural Engineering, Chungnam National University) ;
  • Yun, Hyun-Do (Dept. of Architectural Engineering, Konyang University) ;
  • Chung, Soo-Young (Dept. of Architectural Engineering, Chungnam National University)
  • 발행 : 2000.01.01

초록

Experiments were carried out to investigate the seismic behaviors, such as lateral strength, ductility and energy-dissipation capacity. of high-strength concrete (HSC) square short column confined in thin steel shell. The primary objective of the study was to investigate the suitability of using HSC square columns confined in thin steel shell in region of moderate-to-high seismic risk. A total of six columns, consisting of two ordinarily reinforced concrete square short columns and four reinforced concrete square short columns confined in thin steel shell was tested. Column specimens, short columns in a moment resisting frame with girder. were tested under a constant axial and reversed cyclic lateral loads. To design the specimens. transverse reinforcing methods, level of axial load applied, and the steel tube width-thickness ratio (D/t) were chosen as main parameters. Test results were also discussed and compared in the light of improvements in general behaviors, ductility, and energy-absorption capacities. Compared to conventionally reinforced concrete columns, the HSC columns confined in thin steel shell had similar load-displacement hysteretic behavior but exhibited greater energy-dissipation characteristics . It is concluded that, in strong earthquake areas, the transverse reinforcing method by using a thin steel shell (D/t=125) is quite effective to make HSC short columns with very strong and ductile.

키워드

참고문헌

  1. Standard for Structural calculations of Reinforced Concrete Structures
  2. Building Code Requirements for Structural Concrete(318-95) and Commentary - (318R-95) ACI Committee 318
  3. Journal of The Architectural Institute of Korea v.15 no.4 Elastoplastic Behavior of High Strength Reinforced Concrete Columns with Transverse Reinforcing Method Soo-Young Chung;Hyun-Do Yun
  4. Standard for Structural Calculations of Steel Reinforced Concrete Structures
  5. Bulletin of the Newzealand National Society for Earthquake Engineering v.16 no.2 Reinforced Concrete Bridge Piles Park R.J.T.;Priestley M.J.M.;Walpole W.R.
  6. Proceedings of the international Specialty conference on Concrete Filled Steel Tubular Structures Earthquake-Resisting Hysteretic Behavior of Reinforced Concrete Short Columns Confined by Steel Tube Experimental Results of Preliminary Research Tomii M.;Sakino K.;Xiao Y.;Watanabe K.
  7. Journal of Structural Engineering Composite Action and Bond Stress Transfer in Concrete Filled Tubes Roder C.W.Brad;Brown C.B.
  8. Proceeding of KCI v.7 no.2 An Experimental Study on the Stress-Strain Relation of Concrete-Filled Steel Tube Soo-Young Chung;Byung-Chan Han
  9. Structural Systems Research Project,Report No.SSRP 92/5 Steel Jacket Retrofit for Enhancing Shear Strength of Rectangular Short Reinforced Concrete Columns Xiao Y.;Priestley M.J.M.
  10. Journal of the Structural Division v.93 no.ST5 Strength of Steel-Encased Concrete Beam Columns Furlong R.W.