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http://dx.doi.org/10.9712/KASS.2022.22.3.25

Characteristics of Static Buckling Load of the Hexagonal Spatial Truss Models using Timber  

Ha, Hyeonju (Dept. of Architectural Eng., Koreatech University)
Shon, Sudeok (Dept. of Architectural Eng., Koreatech University)
Lee, Seungjae (Dept. of Architectural Eng., Koreatech University)
Publication Information
Journal of Korean Association for Spatial Structures / v.22, no.3, 2022 , pp. 25-32 More about this Journal
Abstract
In this paper, the instability of the domed spatial truss structure using wood and the characteristics of the buckling critical load were studied. Hexagonal space truss was adopted as the model to be analyzed, and two boundary conditions were considered. In the first case, the deformation of the inclined member is only considered, and in the second case, the deformation of the horizontal member is also considered. The materials of the model adopted in this paper are steel and timbers, and the considered timbers are spruce, pine, and larch. Here, the inelastic properties of the material are not considered. The instability of the target structure was observed through non-linear incremental analysis, and the buckling critical load was calculated through the singularities and eigenvalues of the tangential stiffness matrix at each incremental step. From the analysis results, in the example of the boundary condition considering only the inclined member, the critical buckling load was lower when using timber than when using steel, and the critical buckling load was determined according to the modulus of elasticity of timber. In the case of boundary conditions considering the effect of the horizontal member, using a mixture of steel and timber case had a lower buckling critical load than the steel case. But, the result showed that it was more effective in structural stability than only timber was used.
Keywords
Hexagonal spatial truss; Rise-span ratio; Timber element; Hybrid structure; Critical point; Buckling load level; Snap-through; Nonlinear analysis;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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1 Misztal, Barbara, & MISZTAL. Wooden domes. Springer, 2018.
2 Shon, S., Kim, S., Lee, S. & Kim, J., "A Study on the critical point and bifurcation according to load mode of dome-typed space frame structures," Journal of Korean Association for Spatial Structures, Vol. 11(1), 121-130, 2011, doi: 10.9712/KASS.2011.11.1.121   DOI
3 Shon, S. & Lee, S., "Critical Load and Effective Buckling Length Factor of Dome-typed Space Frame Accordance with Variation of Member Rigidity," Journal of Korean Association for Spatial Structures, Vol. 13(1), 87-96, 2013, doi: 10.9712/KASS.2013.13.1.087   DOI
4 Zhang, C., Chun, Q., Wang, H., Lin, Y. & Shi, J., "Experimental study on the flexural behaviour of timber beams strengthened with high ductility and low cost hybrid fibre sheets," Construction and Building Materials, Vol. 322, 2022, 126514, doi: 10.1016/j.conbuildmat.2022.126514   DOI
5 Ashby, M., Gibson, L., Wegst, U. & Olive, R., "The Mechanical Properties of Natural Materials. I. Material Property Charts," Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 450, pp.123-140, 1995, doi: 10.1098/rspa.1995.0075   DOI
6 Ashby, M., The CES EduPack Database of Natural and Man-Made Materials, 2008, https://www.grantadesign.com/download/pdf/biomaterials.pdf
7 Kwak, E. S., Shon, S. D., & Lee, S. J., "A Study of Modular Dome Structural Modeling with Highly Filled Extrusion Wood-Plastic," Journal of the Korea Institue for Sturcutral Maintenance and Inspecton, Vol.19, No.2, pp.076-083, 2015, doi: 10.11112 /jksmi.2015.19.2.076   DOI
8 Gutman, S., Ha, J. & Shon, S., "Estimation algorithm for physical parameters in a shallow arch," Journal of the Korean Mathematical Society, Vol.58(3), pp.723-740, 2020, doi: 10.4134/JKMS.j200226   DOI
9 Jurkiewiez, B., Durif, S., Bouchair, A. & Grazide, C., "Experimental and analytical study of hybrid steel-timber beams in bending," Structures, Vol. 39, pp.1231-1248, 2022, doi: 10.1016/j.conbuildmat. 2016.05.052   DOI
10 Shon, S. & Hwang, K., "Dynamic buckling characteristics of 3-free-nodes spatial truss model under the step load," Journal of Korean Association for Spatial Structures, Vol. 20(2), 59-68, 2020, doi: 10.9712/KASS.2020.20.2.59   DOI
11 Ansys, Materials: Granta Materials Data for Simulation, 2020, https://www.ansys.com/products/materials/materials-data-for-simulation
12 IDS, YoungJu CLT Apt, 2021, http://idsgrape.com/1415130413
13 Abrahamsen, R., Mjostarnet-Construction of an 81m tall timber building." Internationales Holzbau-Forum IHF, 2017.
14 Weill, J. "Complex Structural Timber Design", SOFisTiK Seminar 2018, https://sofistikforyou.com/complex-structural-timber-design/, 2018.
15 National Institute of Forest Science (Korea), "Eco-friendly material, Wook," Sep. 2018, http://know.nifos.go.kr/webzine/201808/bigdata.do, 2018.
16 Murray Grove, The original timber tower, waughthistleton.com. Retrieved 11 May 2021, https://waughthistleton.com/murray-grove