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Experimental and numerical performance of shear connections in CLT–concrete composite floor

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Abstract

The hybrid cross-laminated timber (CLT) and concrete system has drawn attention as an attractive application for residential and commercial buildings. However, it is crucial to fully understand the mechanical characteristics of the CLT–concrete composite connections before such a hybrid structure becomes widely applicable. This paper assesses the structural performance (force–slip response, slip modulus, and failure mode) of a CLT–concrete composite by conducting fifteen pushout test specimens, which were designed by using the γ-method (Eurocode 5). In these composite specimens, the CLT floor panels were connected to concrete slabs using common mechanical connectors, and the effect of different connection types, connection angles, the penetration depth of the connector, and concrete topping thickness were investigated. The results show that all of the specimens had good trend in the failure mechanisms with a little crush occurred in the CLT and concrete. The finding revealed that the inclination connectors were appeared as an attractive connector layout for CLT–concrete composite components. Non-linear 3D finite element analysis was also developed to simulate the load-slip behavior of the CLT-concrete specimens under shear load. In general, a reliable non-linear finite element model using ANSYS is a great tool for capturing shear capacity and the overall behavior of the hybrid push-out specimens.

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References

  1. Karacabeyli E, Lum C (eds) (2014) Technical guide for the design and construction of tall wood buildings in Canada. FPInnovations, Pointe-Claire

    Google Scholar 

  2. ICC (2015) International building code. International Code Council, Washington, DC

    Google Scholar 

  3. Gelfi P, Giuriani E, Marini A (2002) Stud shear connection design for composite concrete slab and wood beams. J Struct Eng 128(12):1544–1550

    Article  Google Scholar 

  4. Deam BL, Fragiacomo M, Buchanan AH (2008) Connections for composite concrete slab and LVL flooring systems. Mater Struct 41(3):495–507

    Article  Google Scholar 

  5. Lukaszewska E, Johnsson H, Fragiacomo M (2008) Performance of connections for prefabricated timber–concrete composite floors. Mater Struct 41(9):1533–1550

    Article  Google Scholar 

  6. Jorge LF, Carvalho SM, Lopes R, Cruz HMP (2010) Interlayer influence on timber–LWAC composite structures with screw connections. J Struct Eng 137(5):618–624

    Article  Google Scholar 

  7. Yeoh D et al (2010) Experimental tests of notched and plate connectors for LVL–concrete composite beams. J Struct Eng 137(2):261–269

    Article  Google Scholar 

  8. Yeoh D et al (2009) Preliminary research towards a semi-prefabricated LVL–concrete composite floor system for the Australasian market. Aust J Struct Eng 9(3):225–240

    Article  Google Scholar 

  9. Frangi A, Knobloch M, Fontana M (2009) Fire design of timber–concrete composite slabs with screwed connections. J Struct Eng 136(2):219–228

    Article  Google Scholar 

  10. Hassanieh A, Valipour HR, Bradford MA (2016) Experimental and analytical behaviour of steel–timber composite connections. Constr Build Mater 118:63–75

    Article  Google Scholar 

  11. Khorsandnia N, Valipour HR, Crews K (2012) Experimental and analytical investigation of short-term behaviour of LVL–concrete composite connections and beams. Constr Build Mater 37:229–238

    Article  Google Scholar 

  12. Yeoh D, Fragiacomo M, Deam B (2011) Experimental behaviour of LVL–concrete composite floor beams at strength limit state. Eng Struct 33(9):2697–2707

    Article  Google Scholar 

  13. Lukaszewska E, Fragiacomo M, Johnsson H (2009) Laboratory tests and numerical analyses of prefabricated timber–concrete composite floors. J Struct Eng 136(1):46–55

    Article  Google Scholar 

  14. Ceccotti A, Fragiacomo M, Giordano S (2007) Long-term and collapse tests on a timber–concrete composite beam with glued-in connection. Mater Struct 40(1):15–25

    Article  Google Scholar 

  15. Dias AMPG, Luís FCJ (2011) The effect of ductile connectors on the behaviour of timber–concrete composite beams. Eng Struct 33(11):3033–3042

    Article  Google Scholar 

  16. Boccadoro L, Frangi A (2013) Experimental analysis of the structural behavior of timber–concrete composite slabs made of beech-laminated veneer lumber. J Perform Constr Facil 28(6):A4014006

    Article  Google Scholar 

  17. Hassanieh A, Valipour HR, Bradford MA (2016) Load-slip behaviour of steel–cross laminated timber (CLT) composite connections. J Constr Steel Res 122:110–121

    Article  Google Scholar 

  18. Mai KQ et al (2018) Full-scale static and dynamic experiments of hybrid CLT–concrete composite floor. Constr Build Mater 170:55–65

    Article  Google Scholar 

  19. ANSYS Inc 2017 ANSYS mechanical theory reference: release 18.1. Canonsburg PA, USA

  20. Korean Building Code Commentary (KBC, 2016). Architectural Institute of Korea

  21. Quang KM et al (2016) Behavior of high-performance fiber-reinforced cement composite columns subjected to horizontal biaxial and axial loads. Construct Build Mater 106:89–101

    Article  Google Scholar 

  22. Mai-Quang K et al (2017) Reduction of reinforcement congestion in slender coupling beam using bundled diagonal bars. Mag Concr Res 69:1157–1169

    Article  Google Scholar 

  23. European Committee for Standardization (CEN). (2004). “Design of timber structures. Part 1-1: General—Common rules and rules for buildings.” EN 1995—Eurocode 5, Brussels

  24. EN CENISO (1991) 26891–timber structures. Joints made with mechanical fasteners general principles for the determination of strength and deformation characteristics. ISO EN 26891

  25. Ollgaard JG (1971) Shear strength of stud connectors in lightweight and normal-weight concrete. AISC Eng J 1:55–64

    Google Scholar 

  26. Curve Fitting Toolbox: for Use with MATLAB®: User’s Guide. Natick, MA: MathWorks, 2001. Print

  27. EN BS. 338 (2016) Structural timber–strength classes. European Committee for Standardization, Brussels

  28. Kim, Seung Eock, and Huu Thanh Nguyen. “Evaluation of the connection efficiency of hybrid steel–concrete girder using finite element approach.” International Journal of Mechanical Sciences61.1 (2012): 8-23

    Article  Google Scholar 

  29. Xu X, Liu Y, He J (2014) Study on mechanical behavior of rubber-sleeved studs for steel and concrete composite structures. Constr Build Mater 53:533–546

    Article  Google Scholar 

  30. Dias AMPG et al (2007) A non-linear 3D FEM model to simulate timber–concrete joints. Adv Eng Softw 38(8-9):522–530

    Article  Google Scholar 

  31. Dias AMP (2005) Geraldes. Mechanical behaviour of timber-concrete joints. Dissertation TU Delft, Delft University of Technology

  32. Rijal R et al (2015) Experimental and analytical study on dynamic performance of timber–concrete composite beams. Constr Build Mater 75:46–53

    Article  Google Scholar 

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Acknowledgements

This research was supported by a grant (17CTAP-C115068-02) from Architecture and Urban Development Research Program funded by Ministry of Land, Infrastructure and Transport of Korean government.

Funding

This study was funded by Ministry of Land, Infrastructure and Transport of Korean government (Grant No. 17CTAP-C115068-02).

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Authors and Affiliations

  1. Department of Architectural Engineering, Sejong University, Seoul, Korea

    Khai Quang Mai, Aron Park & Kihak Lee

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  1. Khai Quang Mai
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  2. Aron Park
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Correspondence to Kihak Lee.

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Mai, K.Q., Park, A. & Lee, K. Experimental and numerical performance of shear connections in CLT–concrete composite floor. Mater Struct 51, 84 (2018). https://doi.org/10.1617/s11527-018-1202-3

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