Lateral Resistance Enhancement of Reinforced-Concrete Columns by RC Jacketing under Cyclic Loading

Authors

  • Pohnthep Nanta Student, Master of Engineering Program in Civil Engineering, Faculty of Engineering, Khon Kaen University, Thailand
  • Piyawat Foytong Sustainable Infrastructure Research and Development Center (SIRDC), Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Thailand
  • Maetee Boonpichetvong Sustainable Infrastructure Research and Development Center (SIRDC), Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Thailand
  • Natthapong Areemit Sustainable Infrastructure Research and Development Center (SIRDC), Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Thailand
  • Tanyada Pannachet Sustainable Infrastructure Research and Development Center (SIRDC), Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Thailand
  • Apichat Janpila Sustainable Infrastructure Research and Development Center (SIRDC), Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Thailand
  • Pochara Kruavit Department of Civil Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok
  • Anat Ruangrassamee Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok

Keywords:

Lateral resistance enhancement, RC column, RC jacketing, Cyclic loading

Abstract

The occurrence of earthquakes in Thailand significantly impacts building structures, resulting in damage to property and loss of life. Most buildings in Thailand are not designed to withstand earthquakes, making it necessary to strengthen their structural resistance against seismic forces. This research aimed at investigating the enhancement of the lateral resistance of RC columns through full-scale experimental testing. Ordinary RC columns and enhanced RC columns with RC jacketing were tested under cyclic lateral loading with constant axial loading. The ordinary RC column had a 325 x 325 mm cross-section with 20-DB16 reinforcement bars. The cross-sectional dimensions of the strengthened column was 425 x 425 mm with 32-DB16 reinforcement bars. The results indicated that the RC columns with the RC jacketing had been able to increase lateral resistance and stiffness against earthquakes by approximately two times. However, this enhancement was not able to significantly affect the ductility and energy dissipation capacity of the experimental columns.

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Published

2024-04-13

Issue

Vol. 24 No. 1 (2024)

Section

บทความวิจัย

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