Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Seismic Performance of an Existing Low-Rise Reinforced Concrete Piloti Building Retrofitted by Steel Rod Damper

강봉댐퍼로 보강한 기존 저층 철근콘크리트 필로티 건물의 내진성능

  • Baek, Eun Lim (Department of Architectural Engineering, Pusan National University) ;
  • Oh, Sang Hoon (Department of Architectural Engineering, Pusan National University) ;
  • Lee, Sang Ho (Department of Architectural Engineering, Pusan National University)
  • Received : 2014.05.08
  • Accepted : 2014.07.07
  • Published : 2014.09.02
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Abstract

In this study, shaking table test was carried out to evaluate the seismic behavior and performance of low-rise reinforced concrete (RC) piloti structures with and without retrofit. The specimens were designed considering the characteristics of existing building with pilotis such as natural period, distribution factor of strength and stiffness between columns and core wall on the first soft story. The test for the non-retrofit specimen showed that damage was concentrated on the stiffer member on the same floor as the core wall failed by shear fracture whereas columns experienced slight flexural cracks. Considering the failure mode of the non-retrofit specimen, the retrofit method using steel rod damper was presented for improving the seismic performance of piloti structures. The results of the test for retrofit specimen revealed that the retrofit method was effective for controlling the damage as the main RC structural members were not destroyed and most of input energy was dissipated by hysteretic behavior of the damper.

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References

  1. Ko DA. Shaking Table Tests and Analytical Studies on the Piloti-Type High-Rise RC Building Structures. Ph.D. thesis. Seoul. c2005.291 p.
  2. Structural Engineering Reconnaissance of the August 17, 1999 Earthquake : Kocaeli (Izmit), Turkey. PEERC; c2000.
  3. Tsai KC, Hsiao CP, Bruneau M. Overview of Building Damages in 921 Chi-Chi Earthquake. Earthquake Engineering and Engineering Seismology. 2000 Mar;2(1):93-108.
  4. Verderame GM, Luca FD, Ricci P, Manfredi G. Preliminary analysis of a soft-storey mechanism after the 2009 L'Aquila earthquake. Earthquake Engng Struct. Dyn. 2011;40:925-944. https://doi.org/10.1002/eqe.1069
  5. Das S, Nau JM. Seismic design aspects of vertically irregular reinforced concrete buildings. Earthquake Spectra. 2003 Aug;19(3):455-477. https://doi.org/10.1193/1.1595650
  6. Lamb PB, Londhe RS. Seismic behavior of soft first storey. IOSR-JMCE. 2012 Nov;4(5):28-33. https://doi.org/10.9790/1684-0452833
  7. Lee HS, Ko DW. Seismic response characteristics of high-rise RC wall buildings having different irregularities in lower stories. Engineering Structures. 2007 Apr;29(11):3149-3167. https://doi.org/10.1016/j.engstruct.2007.02.014
  8. Shin JU, Kim JH, Lee KH. Seismic assessment of damaged piloti-type RC building subjected to successive earthquakes. Earthquake Eng. Struct. Dyn[Internet]. 2014 Feb; DOI:10.1002/eqe.2412.
  9. Song SH. Cha MK, Ryu HS, Oh SH, Lee SH. Dynamic response characteristics of the base-isolated structure for shake table test. Journal of Architectural Institute of Korea. 2010 Apr; 26(4):21-30.
  10. Ministry of Construction and Transportation. Seismic Evaluation and retrofit of low-rise RC building in Korea. Korea University. Seoul; c2002.
  11. Korea Society of Seismic Isolation and Vibration Control. PEER-Review guideline for design of structures with damping systems. Seoul: Korea Society of Seismic Isolation and Vibration Control; c2012. 237 p.
  12. Oh SH, Kim JW, Moon TS. An experimental study of flexible-stiff mixed system of high yield ratio-high strength steel for the practical use. Journal of Korean Society of Steel Construction. 2005 Aug;17(4):395-405.
  13. Akiyama H, Takahashhi M, Shi Z. Ultimate energy absorption capacity of round-shape steel rods subjected to bending. J. Struct. Constr. Eng.. 1995 Sep;(475):145-154.
  14. Akiyama H. Earthquake-resistant design method for buildings based on energy balance. 1st ed. Oh SH. Seoul: Goomibook; c2002. 328 p.
  15. Architectural Institute of Korea. Guideline for design of vibration control system. Seoul: Architectural Institute of Korea; c2010. 136 p.