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A Flexural Performance Evaluation of CLT-Concrete Composite Floors Used Steel Shear Connectors

강재 전단 연결재가 사용된 CLT-콘크리트 합성바닥판의 휨성능 평가

  • 박금성 (한국건설기술연구원 건축연구본부) ;
  • 오근영 (한국건설기술연구원 건축연구본부)
  • Received : 2021.06.16
  • Accepted : 2021.09.23
  • Published : 2021.10.30

Abstract

The purpose of this study was to evaluate the flexural performance of CLT-concrete composite floors that used steel shear connectors for applying a light modular system. The proposed steel shear connectors are inverted U-shaped and T-shaped, and were installed in the notches of the CLT floor. As experimental variables, the shear connector types, the number and thickness of CLT layers were considered, and the flexural performance of six composite floor specimens was evaluated. As a result, the maximum loads of all specimens were determined by rolling shear fractures and the specimens using the inverted U-shaped shear connector showed excellent flexural performance. However, the composite effect between CLT and concrete was found to be insignificant, and it is considered that it is necessary to improve the shape of steel shear connector later.

Keywords

Acknowledgement

이 연구는 2021년도 국토교통과학기술진흥원의 도시건축연구사업 연구비 지원에 의한 결과의 일부임. 과제번호:No.20AUDP-B146511-04.

References

  1. Bae, K., Lee, S., Park, K., Heo, B., & Hong, S. (2014). Evaluation on Flexural Performance for Light-Weight Composite Floor with Sound Reduction System, Journal of Korean Society of Steel Construction, 26(3), 241~250. https://doi.org/10.7781/KJOSS.2014.26.3.241
  2. Deam, B., Fragiacomo, M., & Buchanan, A. (2008). Connections for composite concrete slab and LVL flooring systems, Materials and Structures, 41, 495~507. https://doi.org/10.1617/s11527-007-9261-x
  3. Khorsandnia. N., Valipour, H., Schanzlin, J., & Crews, K. (2016). Experimental Investigations of Deconstructable Timber-Concrete Composite Beams, Journal of Structural Engineering, 142(12), 04016130-1~13. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001607
  4. Khorsandnia, N., Valipour, H., & Bradford, M. (2018). Deconstructable timber-concrete composite beams with panelised slabs: Finite element analysis, Construction and Building Materials, 163, 798~811. https://doi.org/10.1016/j.conbuildmat.2017.12.169
  5. Korea Industrial Standards (2017a). Test Pieces for Tensile Test for Metallic Materials (KS B 0801), Korea.
  6. Korea Industrial Standards (2017b). Standard Test Method for Compressive Strength of Concrete (KS F 2405), Korea.
  7. Korea Industrial Standards (2018a). Structural Glued Laminated Timber (KS F 3021), Korea.
  8. Korea Industrial Standards (2018b). Rolled Steels for General Structure (KS D 3503), Korea.
  9. Korea Industrial Standards (2019). Standard Test Method for Making and Curing Concrete Specimens (KS F 2403), Korea.
  10. Korea Industrial Standards (2021). Cross Laminated Timber (KS F 2081), Korea.
  11. Lukaszewska. E., Johnsson, H., & Fragiacomo, M. (2008). Performance of connections for prefabricated timber-concrete composite floors, Materials and Structures, 41, 1533~1550. https://doi.org/10.1617/s11527-007-9346-6
  12. Mai. K., Park, A., Nguyen, K., & Lee, K. (2018). Fullscale static and dynamic experiments of hybrid CLT-concrete composite floor, Construction and Building Materials, 170, 55~65. https://doi.org/10.1016/j.conbuildmat.2018.03.042
  13. Park, A., & Lee, K. (2019). Experimental and Analytical Study of Shear Connectors for the CLT-Concrete Composite Floor System, Journal of Korean Association for Spatial Structures, 19(1), 65~73. https://doi.org/10.9712/KASS.2019.19.1.65