Asian Journal of Civil Engineering

, Volume 19, Issue 3, pp 343–354 | Cite as

Experimental study on seismic behavior of repaired tunnel form building under cyclic loading

Original Paper
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Abstract

It is very important to determine the seismic behavior of the multi-story tunnel form buildings especially in medium and high seismic regions. The aim of this study is to determine the overall seismic behavior of unrepaired and repaired specimens under the in-plane lateral cyclic loading. The damaged specimen was repaired by enlarging the external shear wall, affixing the joints with steel plate and steel angle and finally wrapping the specimen with CFRP. A one-third scale double unit of tunnel form buildings was designed using non-seismic code of practice (BS8110), constructed and tested under in-plane lateral cyclic loading. The specimen was tested starting from ± 0.01, ± 0.1, ± 0.25, ± 0.5, ± 0.75%, until ± 2.3% drift. The repaired specimen was retested following a similar pattern of drifts as before repaired. The hysteresis loops of repaired specimen were modeled using HYSTERES program in Ruaumoko 2D. Experimental results showed that the repaired specimens improved in term of damages, 19.35% of lateral strength capacity, 6.79% of stiffness, 34.87% of ductility and 31.11% of equivalent viscous damping. There was good agreement between experimental hysteresis loops and modeling hysteresis loops. Thus, the damaged tunnel form buildings can be repaired, retrofitted and strengthened using the combination materials of steel plate, steel angle and CFRP.

Keywords

Ductility Hysteresis loops Repaired Stiffness Tunnel form building Stiffness 

Notes

Acknowledgements

Special thanks to e-Science Fund, Ministry of Science and Innovation (MOSTI), Putrajaya, Malaysia and RMC (Research Management Center) for funding this research work. Gratitude and appreciation to the laboratory staff of Faculty of Civil Engineering for their invaluable assistance during the course of this experimental research work.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • N. H. Hamid
    • 1
  • S. A. Anuar
    • 2
  • H. Awang
    • 1
  • M. E. Kori
    • 3
  1. 1.Institute for Infrastructure Engineering and Sustainability Management, Universiti Teknologi MARAShah AlamMalaysia
  2. 2.School of Environmental EngineeringUniversiti Malaysia PerlisArauMalaysia
  3. 3.Department of Civil EngineeringUniversitas Negeri SemarangKota SemarangIndonesia

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