Experimental study on the lateral behavior of DSCT columns with corrugated inner tube

Taek Hee Han, Deokhee Won, Seungjun Kim, Young Jong Kang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A double-skinned composite tubular column with a corrugated internal tube (DSCT-CT) was suggested to reduce the thickness of the inner tube while maintaining the required buckling strength. The DSCT-CT was studied to evaluate its behavior under lateral loading, and its lateral behavior was compared with that of a DSCT column with a flat internal tube (DSCT-FT). Quasi-static tests were performed by applying cyclic lateral loadings to the two different DSCT columns. Their test results were compared to each other and to those of a solid RC column from other research. The test results showed that the DSCT-CT column had larger ductility than the DSCT-FT column, with an equivalent damping ratio. However, the DSCT-CT column showed a smaller bending moment resistance and energy-absorbing capacity than the DSCT-FT column. Overall, the test results showed that the performances of the DSCT columns were superior to that of the solid RC column in terms of strength, yield energy, ultimate energy, and energy-absorbing capacity. As a result of their superior moment capacities, the DSCT columns absorbed about 50 % more energy than the solid RC column. However, the DSCT columns showed lower energy ductility factors than the solid RC column because of their high yield energies.

Original languageEnglish
Pages (from-to)2855-2867
Number of pages13
JournalMaterials and Structures/Materiaux et Constructions
Volume48
Issue number9
DOIs
Publication statusPublished - 2014 Jul 23

Keywords

  • Column
  • Composite
  • Concrete
  • Corrugate
  • Double skinned
  • DSCT

ASJC Scopus subject areas

  • Building and Construction
  • Civil and Structural Engineering
  • Mechanics of Materials
  • Materials Science(all)

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