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중저층 철근콘크리트 주거형 건축물의 내진성능평가를 위한 단자유도 모델 구축

Development of an SDOF Model for Seismic Performance Evaluation of Low to Mid-Rise Reinforced Concrete Residential Buildings

  • 박민석 (계명대학교 건축공학과) ;
  • 이서연 (계명대학교 건축공학과) ;
  • 최인섭 (계명대학교 건축공학과)
  • Minseok Park (Department of Architectural Engineering, Keimyung Univ) ;
  • Seoyoun Lee (Department of Architectural Engineering, Keimyung Univ) ;
  • Insub Choi (Department of Architectural Engineering, Keimyung Univ)
  • 투고 : 2024.06.20
  • 심사 : 2024.08.21
  • 발행 : 2024.10.31

초록

지진발생 시, 건물은 작게는 손상에서 크게는 붕괴까지 이어지므로 인명과 재산상의 피해가 생길 수 있다. 이러한 지진의 위험성에 대비하여 건물의 내진성능평가가 필요하다. 현재 내진성능평가 기법의 경우 개별 건물을 대상으로 하기에 많은 시간이 투자되어야 한다. 따라서, 지역규모의 건물들을 대상으로 하는 내진성능평가 기법의 개발이 필요한 실정이다. 본 연구는 RC 주거형 건물의 내진성능을 평가하고 보강계획을 수립하기 위해 비선형 Shear Spring을 가진 단자유도모델을 구축하였다. 구조물의 비선형 응답을 모사하기 위한 비선형 Shear Spring은 T-SR-μ를 매개변수로 정의된다. 해당모델에 100개의 PEER 지진을 적용하여, 최대층간변위비 응답으로 건물의 내진성능을 평가하였다. 제안기법의 적용성을 확인하기 위하여 상세모델과 비교하였을 때, 두 모델 모두 건물의 내진성능을 같은 수준으로 판단하였음을 확인하였다. 본 연구는 제안된 방식이 실제 건물의 내진성능을 예측할 수 있음을 보여주었다.

During earthquakes, buildings can suffer damage ranging from minor to severe, potentially leading to collapses and resulting in loss of life and property. To mitigate these risks, it is essential to evaluate the seismic performance of buildings. Current seismic performance evaluation techniques require significant time as they focus on individual buildings. Therefore, there is a need to develop evaluation techniques that can be applied on a regional scale. This study proposes a single-degree-of-freedom model with a nonlinear shear spring to assess the seismic performance and plan the reinforcement of reinforced concrete residential buildings. The nonlinear shear spring, defined by the T-SR-μ parameter, is used to simulate the nonlinear response of the structure. By applying 100-PEER ground motions to this model, the seismic performance of the buildings was evaluated based on the maximum inter-story drift ratio response. The applicability of the proposed technique was confirmed by comparing it with detailed models, where both models assessed the seismic performance of the buildings at similar levels. This results demonstrate that the proposed method can accurately predict the seismic performance of actual buildings.

키워드

과제정보

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. RS-2023-00220019).

참고문헌

  1. AIK (2018) Site Inspection and Damage Investigation of Buildings by Earthquakes in Gyeongju and Pohang, Seoul, Korea: Spacearts Co., Architectural Institute of Korea (AIK). (In Korean)
  2. ASCE (2023) Seismic Evaluation and Retrofit of Existing Buildings, ASCE/SEI 41-23, American Society of Civil Engineers.
  3. Bo, H., Chen, X., Zhen, X., Xin-zheng, L.U. (2014) A MultiStory Concentrated-Mass Shear Model for Urban Regional Seismic Damage Prediction and Associated Parameter Determination, Eng. Mech., 31, pp.73-78.
  4. Calvi, G.M., Priestley, M.J.N., Kowalsky, M.J. (2007) Displacement-based Seismic Design of Structures, In New Zealand Conference on Earthquake Engineering, IUSS press.
  5. Chopra, A.K., Chintanapakdee, C. (2004) Evaluation of Modal and FEMA Pushover Analyses: Vertically "Regular" and Irregular Generic Frames, Earthq. spectra, 20(1), pp.255~271.
  6. Dya, A.F.C., Oretaa, A.W.C. (2015) Seismic Vulnerability Assessment of Soft Story Irregular Buildings using Pushover Analysis, Proc. Eng., 125, pp.925~932.
  7. FEMA (2000) Prestandard and Commentary for the Seismic Rehabilitation of Building, Report No. FEMA-356, Federal Emergency Management Agency, Washington, D.C.
  8. FEMA (2005) Improvement of Nonlinear Static Seismic Analysis Procedures, FEMA-440, Redwood City, 7(9), 11.
  9. FEMA (2012) Hazus-MH 2.1 Technical Manual: Earthquake Model.
  10. Hori, M., Ichimura, T. (2008) Current State of Integrated Earthquake Simulation for Earthquake Hazard and Disaster, J. Seismol., 12, pp.307~321.
  11. Kim, J.C., Shin, S.H., Oh, S.H. (2019) Damage Investigation of Pilotis Structures and Analysis of Damage Causes by Pohang Earthquake, J. Archit. Inst. Korea Struct. & Constr., 35(3), pp.3~10.
  12. Kim, T., Chu, Y., Kim, S.R., Bhandari, D. (2018) Seismic behavior of Domestic Piloti-Type Buildings Damaged by 2017 Pohang Earthquake, J. Earthq. Eng. Soc. Korea, 22(3), pp.161~168.
  13. Kircher, C., Deierlein, G., Hooper, J., Krawinkler, H., Mahin, S., Shing, B., Wallace, J. (2010) Evaluation of the FEMA P-695 Methodology for Quantification of Building Seismic Performance Factors, NIST GCR 10-917-8, National Institute of Standards and Technology.
  14. Latcharote, P., Terada, K., Hori, M., Imamura, F. (2018) A Prototype Seismic Loss Assessment Tool using Integrated Earthquake Simulation, Int. J. Disaster Risk Reduct., 31, pp. 1354~1365.
  15. Lee, H.S., Ko, D.W. (2002) Shaking Table Tests of a High-Rise RC Bearing-Wall Structure with Bottom Piloti Stories, J. Asian Archit. & Build. Eng., 1(1), pp.47~54.
  16. Lee, H.S., Ko, D.W. (2007) Seismic Response Characteristics of High-Rise RC Wall Buildings Having Different Irregularities in Lower Stories, Eng. Struct., 29(11), pp.3149~3167.
  17. MOLIT (2021) Guideline for Seismic Performance Evaluation of Existing Buildings, Sejong, Korea: Ministry of Land, Infrastructure and Transport.
  18. MOLIT (2022) Seismic Design Code for Buildings (KDS 41 1700). Sejong, Korea: Ministry of Land, Infrastructure and Transport.
  19. Moon, E.C., Baek, E.R., Lee, S.H. (2018) Influence of Inter-Story Strength and Stiffness Ratios on the Seismic Performance of RC Pilotis Type Building, J. Korea Concr. Inst., 30(6), pp. 633~640.
  20. Sextos, A.G., Katsanos, E.I., Manolis, G.D. (2011) EC8-based Earthquake Record Selection Procedure Evaluation: Validation Study based on Observed Damage of an Irregular R/C Building, Soil Dyn. & Earthq. Eng., 31(4), pp.583~597.
  21. Shin, J., Choi, I., Kim, J.H. (2021) Rapid ,Decision-Making Tool of Piloti-Type RC Building Structure for Seismic Performance Evaluation and Retrofit Strategy using Multi-Dimensional Structural Parameter Surfaces, Soil Dyn. & Earthq. Eng., 151, p.106978.
  22. Shin, J., Kim, J.H., Lee, K. (2014) Seismic Assessment of Damaged Piloti-Type RC Building Subjected to Successive Earthquakes, Earthq. Eng. & Struct. Dyn., 43(11), pp.1603~1619.
  23. Sohn, J., Choi, I., Kim, J.H. (2020) Effect of Vertical Irregularity on Displacement Concentration in Building Seismic Design based on Linear Analysis, J. Archit. Inst. Korea, 36(6), pp. 193~200.
  24. Sohn, J.H., Choi, I., Kim, J.H. (2022a) Development of Limit States for Seismic Fragility Assessment of Piloti-Type Structures Verified with Observed Damage Data, Eng. Struct., 251, Part B, p.113562.
  25. Sohn, J., Choi, I., Kim, J.H. (2022b) Drift-based Limit States Through Seismic Fragility Assessment for Piloti-Type Building Structures, J. Archit. Inst. Korea, 38(6), pp.205~211.
  26. Zeng, X., Lu, X., Yang, T.Y., Xu, Z. (2016) Application of the FEMA-P58 Methodology for Regional Earthquake Loss Prediction, Nat. Hazards, 83, pp.177~192.