DOI QR코드

DOI QR Code

철근 콘크리트 전단벽에서 면외 하중이 면내 전단성능에 미치는 영향

The Effect of Out-of-Plane Load on the In-Plane Shear Capacity of Reinforcement Concrete Shear Wall

  • 신혜민 (한국원자력연구원 구조.지진안전연구부) ;
  • 박준희 (한국원자력연구원 구조.지진안전연구부)
  • Shin, Hye Min (Structural and Seismic Safety Research Division, Korea Atomic Energy Research Institute) ;
  • Park, Jun Hee (Structural and Seismic Safety Research Division, Korea Atomic Energy Research Institute)
  • 투고 : 2023.09.13
  • 심사 : 2023.12.02
  • 발행 : 2024.03.01

초록

The design shear strength equations of RC shear walls have been developed based on their performance under in-plane (IP) loads, thereby failing to account for the potential performance degradation of shear strength when subjected to simultaneous out-of-plane (OOP) loading. Most of the previous experimental studies on RC walls have been conducted in one direction under quasi-static conditions, and due to the difficulty in experimental planning, there is a lack of research on cyclic loading and results under multi-axial loading conditions. During an earthquake, shear walls may yield earlier than their design strength or fail unexpectedly when subjected to multi-directional forces, deviating from their intended failure mode. In this paper, nonlinear analysis in finite element models was performed based on the results of cyclic loading experiments on reinforced concrete shear walls of auxiliary buildings. To investigate the reduction trend in IP shear capacity concerning the OOP load ratio, parametric analysis was conducted using the shear wall FEM. The analysis results showed that as the magnitude of the OOP load increased, the IP strength decreased, with a more significant effect observed as the size of the opening increased. Thus, the necessity to incorporate this strength reduction as a factor for the OOP load effect in the wall design strength equation should be discussed by performing various parametric studies.

키워드

과제정보

본 연구는 산업통상자원부(MOTIE)와 한국에너지기술평가원(KETEP)의 지원을 받아 수행하였습니다(No. 20224B10200080).

참고문헌

  1. Kim DH, Lee KK, Koo JM. Evaluation of Nonlinear Seismic Response of RC Shear Wall in Nuclear Reactor Containment Building. J Comput Struct Eng Inst Korea. 2021;34(6):385-392. https://doi.org/10.7734/COSEIK.2021.34.6.385
  2. Dashti F, Dhakal RP, Pampanin S. Seismic Performance of Existing New Zealand Shear Wall Structures; 2015.10.8.-10.; The New Zealand Concrete Industry Conference 2015; Rotorua, New Zealand: Concrete Industry Conference NZ; c2015.
  3. Rosso A, Almeida JP, Beyer K. Stability of Th in Reinforced Concrete Walls under Cyclic Loads: State-of-The-Art and New Experimental Findings. Bulletin of Earthquake Engineering. 2016;14:455-484. https://doi.org/10.1007/s10518-015-9827-x
  4. Barda F, Hanson JM, Corley WG. Shear Strength of Low-Rise Walls with Boundary Elements. ACI Symposium on Reinforced Concrete Structures in Seismic Zones. Detroit, Michigan; ACI; c1976.
  5. ACI 318 Committee. Building Code Requirements for Structural Concrete (ACI 318-05) and Commentary (ACI 318R-05). Famington Hills, MI: American Concrete Institute; c2005.
  6. Kabeyasawa T, Kato S, Sato M, Kabeyasawa T, Fukuyama H, Tani M, Kim Y, Hosokawa Y. Effects of bi-directional lateral loading on th e strength and deformability of reinforced concrete walls with/without boundary columns. 2014 Jul 21-25; 10th U.S. National Conference on Earthquake Engineering; Anchorage, Alaska: Earthquake Engineering Research Institute; c2014.
  7. Niroomandi A, Pampanin S, Dhaka RP, Ashtiani MS, Nokes R, Experimental study on the effects of bi-directional loading pattern on rectangular reinforced concrete walls. Earthquake Engng Struct Dyn. 2021;50:2010-2030. https://doi.org/10.1002/eqe.3433
  8. Beyer K, Hube M, Constantin R, Niroomandi A, Pampanin S, Dhakal R, Sritharan S, Wallace JW, Reinforced concrete wall response under uni- and bi- directional loading. 2017 Jan 9-13; 16th World Conference on Earthquake Engineering; Santiago, Chile: WCEE; c2017.
  9. Electric Power Research Institute, TR3002012994-Seismic Fragility and Seismic Margin Guidance for Seismic Probabilistic Risk Assessments. Palo Alto, CA: EPRI; c2018.
  10. Siavash D, Tim G, Greg SH, John R, Out-of-plane shear capacity of reinforced concrete walls for use in fragility and margin calculation; 2022 Jul 10-15; 26th International Conference on Structrual Mechanics in Reactor Technology; Berlin/Potsdam, Germany, SMiRT; c2022.
  11. Park JH, Chae YB, Ahn KH. Seismic Capacity Evaluation of Reinforced Concrete Shear Wall under Multi Axis-Load, KAREI/TR-8426/2020; c2021.
  12. Dassault Systems. Abaqus Analysis User's Manual. Velizy-Villacoublay: Dassault Systems; c2014.
  13. Lubliner J, Oliver J, Oller S, Onate E. A Plastic-damage Model for Concrete. International Journal of Solids and Structures. 1989;25(3):299-326. https://doi.org/10.1016/0020-7683(89)90050-4
  14. Genikomsou AS, Polak MA. Finite element analysis of punching shear of concrete slabs using damaged plasticity model in ABAQUS. Engineering Structures. 2015;98:38-48. https://doi.org/10.1016/j.engstruct.2015.04.016
  15. European Committee for Standardization (CEN). Design of Composite Steel and Concrete Structures, Part 1.1 : General Rules and Rules for Buildings. EN1994-1-1; c2004.
  16. Mander JB, Priestley MJ, Park R. Theoretical stress-strain model for confined concrete, Journal of Structural Engineering. 1988;114(8):1804-1826. https://doi.org/10.1061/(ASCE)0733-9445(1988)114:8(1804)
  17. Kim KS, Gombosuren M, Han O. Numerical simulation of Y-type perfobond rib shear connectors using finite element analysis. Steel and Composite Structures. 2019;31(1):53-67.
  18. Wang T, Hsu TT. Nonlinear finite element analysis of concrete structures using new constitutive models. Comput Struct. 2001;79(32):2781-2791. https://doi.org/10.1016/S0045-7949(01)00157-2
  19. Loh HY, Uy B, Bradford MA. The effects of partial shear connection in th e h ogging moment regions of composite beams: PartI- Experimetal study. J Constr Steel Res. 2004;60(6):897-919. https://doi.org/10.1016/j.jcsr.2003.10.007