Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Suitability Evaluation of Design Methods for Lateral Confinement Region of L, U-Shaped Walls in Domestic High-Rise Apartments Based on Finite Element Analysis

유한요소해석에 기반한 국내 고층아파트 L, U형 벽체의 횡보강 영역 산정방법의 적합성 평가

  • Received : 2025.02.03
  • Accepted : 2025.04.10
  • Published : 2025.07.01
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Abstract

In apartment buildings in Korea, irregular walls, such as T-, L-, and U-shaped walls, are commonly used. However, in practical design, the geometric irregularities of walls are often neglected when determining the length of the lateral confinement region. Further, although earthquake loads apply from various directions, the lateral confinement region is typically determined for the in-plane direction of the web. Thus, using finite element analysis, this study investigated the structural performance of irregular walls subjected to various loading directions. As the design parameters, wall shape, cross-sectional aspect ratio, and loading direction were addressed. According to the parametric analysis results, as the length of flange in tension increased, the lateral confinement region should be evaluated with consideration of the geometric irregularity. Further, for the L- and U-shaped walls, it is recommended to evaluate the lateral confinement region for various loading directions. Based on these results, a design method to determine the lateral confinement region of irregular walls was suggested.

Keywords

Acknowledgement

본 연구는 한국연구재단 중견연구지원사업(No. RS-2025-00514317, No. 2021R1A2C1012314)과 창의·도전연구기반지원사업(No. RS-2023-00247089)의 지원을 받아 수행되었습니다.

References

  1. Ha HR. A study on the recognition types of adults who experienced Gyeongju earthquake. Journal of Korean Association for Crisis and Emergency Management. 2020 Jun;9(1):1-13.
  2. Statics Korea. 2023 Population and housing census results. Daejeon (KR): Statics Korea; c2023.
  3. Ministry of Land, Infrastructure and Transport. Seismic design code for buildings (KDS 41 17 00); c2019.
  4. Thomsen IV JH. Displacement based design of reinforced concrete structural walls: An experimental investigation of walls with rectangular and T-shaped cross-sections. Clarkson University; c1995.
  5. Bang JS, Gang GS. Application of building using optimal design of irregular wall. J Comput Struct Eng. 2015;28(1):47-52.
  6. Beyer K, Dazio A, Priestley MJN. inelastic wide-column models for u-shaped reinforced concrete walls. J Earthquake Eng. 2008 Apr;12(S1):1-33. https://doi.org/10.1080/13632460801922571
  7. Benbellil B, Kebdani S, Kettab R, Abdessemed M, Benbouras MA. Modeling of of L-shaped Reinforced Concrete Wall Using ANSYS. Aust J Basic Appl Sci. 2017 Jan;8(4):133-142.
  8. Nam HS, Eom TS. Biaxial interaction and load contour method for reinforced concrete C- and H-shaped structural walls. J Korea Concr Inst. 2017 Apr;29(2):189-200. https://doi.org/10.4334/JKCI.2017.29.2.189
  9. Yun SJ, Kim SH, Kang SM, Lee DH, Lee WJ. Suitability evaluation of design methods for lateral confinement region of t-shaped walls based on finite element analysis. J Earthq Eng Soc Korea. 2024 Nov;28(6):355-364. https://doi.org/10.5000/EESK.2024.28.6.355
  10. Jiaxing M, Bing L. Seismic behavior of l-shaped rc squat walls under various lateral loading directions. J Earthquake Eng. 2017 Sep;23(2):422-443. https://doi.org/10.1080/13632469.2017.1326424
  11. Zhong WZ, Bing L. Evaluation Of Seismic Performance of Slender L-Shaped And T-Shaped RC Structural Walls-Second European Conference On Earthquake Engineering And Seismology; Aug 25-29; Istanbul, TK: c2014.
  12. Beyer K, Dazio A, Priestley. quasi-static cyclic tests of two u-shaped reinforced concrete walls. J Earthquake Eng. 2008 Sep;12(7):1023-1053. https://doi.org/10.1080/13632460802003272
  13. Constantin R, Beyer K. Behaviour of U-shaped RC walls under quasi-static cyclic diagonal loading. Eng Struct. 2016 Jan;106(1):36-52. https://doi.org/10.1016/j.engstruct.2015.10.018
  14. Chaouch AA, Boutemeur R, Bechtoula H, Bali A. Numerical study on shear stress variation of RC wall with L shaped section. Periodica Polytechnica Civil Engineering. 2015 Jan;59(1):15-25. https://doi.org/10.3311/PPci.7575
  15. Xiaolei H, Binbin C, Jing J, Shunguang X, Huaikun L. Deformation limits of L-shaped reinforced concrete shear wall: Experiment and evaluation. The Structural Design of Tall and Special Buildings. 2019 Sep;28(13):1-20. https://doi.org/10.1002/tal.1627
  16. Kim MS, Kim SH, Kang SM, Lee JW. Cyclic loading test for reinforced concrete wall confined with prefabricated rectangular continuous hoops. J Build Eng. 2024 Nov;97:110681. https://doi.org/10.1016/j.jobe.2024.110681
  17. Ministry of Land, Infrastructure and Transport. Structural design code for buildings (KDS 14 20 00); c2019.
  18. ACI Committee 318, Building Code Requirements for Structural Concrete and Commentary (ACI 318-19). American Concrete Institute; c2019.
  19. Kim MS. Seismic performance evaluation of RC structural walls with prefabricated rectangular continuous hoops [master's thesis]. Soongsil University; c2024. 65 p.
  20. Han SW, Oh YH, Lee LH. Effect of edge confinement on deformation capacity in the isolated RC strcutural walls. J Korea Concr Inst. 1999 Dec;11(6):101-112.
  21. ATENA Program Documentation Part1 Theroy. Vladimír Červenka, Libor Jendele, and Jan Červenka; c2022 Sep.
  22. Ile N, Reynouard JM. Behavior of U-shaped walls subjected to uniaxial and biaxial cyclic lateral loading. J Earthquake Eng. 2008 Sep;9(1):67-94. https://doi.org/10.1080/13632460509350534
  23. Kupfer H, Hilsdorf HK, Rüsch H. Behavior of concrete under biaxial stresses. Journal ACI, Prooeedings. 1969 Aug;66(8):656-666. https://doi.org/10.14359/7388