지구물리 (Journal of the Korean Geophysical Society)

한국지구물리·물리탐사학회 (Korean Society of Earth and Exploration Geophysicists)
권호 표지

보수 및 보강요소를 이용한 RC 부재의 비탄성 해석

Inelastic Analysis of RC Members Using Repair and Retrofitted Element

  • 발행 : 20060000
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 연구에서는 손상된 철근콘크리트 구조부재의 내진성능을 검토하기 위하여 탄소성 보수 및 보강요소를 개발하였다. 개발된 요소는 저하된 강도 및 강성의 상태를 유지한 부재상태에 보수 및 보강에 의한 특성치들의 증가분에 대한 효과를 반영할 수 있다. 이 요소는 활성시작시간과 활성끝시간을 갖는 요소로서 정적시간이력해석이나 동적시간이력해석의 경우, 사용자가 원하는 시간간격 내에서 자유롭게 활성화를 시킬 수 있다. 보수 및 보강된 철근콘크리트 부재에 대한 비교해석이 수행되었고, 개발된 요소를 이용한 해석결과는 실험결과와 비교하여 만족할만한 상관관계를 나타내었다. 즉, 본 연구에서 개발된 요소는 보수 및 보강된 철근콘크리트 부재의 내진수행능력 산정에 유용한 자료를 제공할 수 있을 것으로 사료된다.

In this short paper, an elasto-plastic repair and retrofit element is developed for the investigation of the seismic performance of damaged reinforced concrete members. The developed element is capable of reflecting the increased characteristics due to both repair and retrofitting for degraded strength and stiffness of the members. The element having both birth and death time can freely be activated within the user-defined time intervals during static and dynamic time-history analysis. Comparative studies are conducted for reinforced concrete members being repaired and retrofitted. Analytical predictions including the developed element display reasonable correlation with experimental results. In short, it is concluded that the developed element is capable of providing salient features for the healthy assessment of seismic performance of RC members being repaired and retrofitted.

키워드

참고문헌

  1. ATC, 1996. 'Seismic evaluation and retrofit of concrete buildings' , Vol. 1, ATC-40, Applied Technology Council, Redwood City, USA
  2. Broderick, B.M., Elnashai, A.S., Ambraseys, N.N., Barr, J.M., Goodfellow, R.G. and Higazy, E.M., 1994. 'The Northridge (California) Earthquake of 17 January 1994: Observations, Strongmotion and Correlative Response Analyses', ESEE research report, No. 94/4, Imperial College, London
  3. BSSC, 1997. 'NEHRP guidelines for the seismic rehabilitation of buildings', FEMA-273, developed by ATC for FEM, Washington, D.C., USA
  4. Chai, Y.H., Priestley, M.J.N. and Seible, F., 1991. 'Seismic retrofit of circular bridge columns for enhanced flexural performance', ACI Structural Journal, Vol. 88, No. 5, pp. 572-584
  5. Elnashai, A.S., Bommer, J.J, Baron, C.I., Lee, D.H. and Salama, A.I., 1995. 'Selected Engineering Seismology and Structural Engineering Studies of the Hyogo-Ken Nanbu (Great Hanshin) Earthquake of 17 January 1995', ESEE research report, No. 95-2, Imperial College, London
  6. Elnashai, AS., Papanikolaou, V. and Lee. D.H., 2001. 'ZeusNL-A program for inelastic dynamic analysis of structures', Mid-America Earthquake Center, University of Ilinois at Urbana-Champaign, USA
  7. Izzuddin, B.A. and Elnashai, A.S., 1993a. 'Adaptive space frame analysis Part I: a plastic hinge approach', Proceedings of Institution of Civil Engineers Structures & Buildings, Vol. 99, pp. 303-316
  8. Izzuddin, B.A. and Elnashai, A.S., 1993b. 'Adaptive space frame analysis Part II: a distributed plasticity approach', Proceedings of Institution of Civil Engineers Structures & Buildings, Vol. 99, pp. 317-326
  9. Lee, D.H., Choi, E. and Zi, G., 2005. 'Evaluation of earthquake deformation and performance for RC bridge piers', Engineering Structures, Vol. 27, No. 10, pp. 1451 -1464 https://doi.org/10.1016/j.engstruct.2005.04.009
  10. Priestley, M.J.N., Seible, F. and Calvi, G.M., 1996. 'Seismic design and retrofit of bridges' , John Wiley & Sons, INC
  11. Priestley, M.J.N., Seible, F., Xiao, Y and Verma, R., 1994. 'Steel jacket retrofitting of reinforced concrete bridge columns for enhanced shear strength-Part2: test results and comparison with theory', ACI Structural Journal, Vol. 91, No.5, pp. 537-551
  12. Whittaker, A., Constantinou, M. and Tsopelas, P., 1998. 'Displacement estimates for performance-based seismic design', Journal of Structural Engineering', Vol. 124, No. 8, pp. 905-912 https://doi.org/10.1061/(ASCE)0733-9445(1998)124:8(905)