Experimental Study on Mechanical Properties of Larch Glulam Columns under Axial Compression

Abstract:

At present, the relevant researches of Glulam columns in China are mainly restricted to short columns. In order to study the mechanical properties of long columns under axial loading, an experimental study on five different slenderness ratios of Larch Glulam columns was carried out. With slenderness ratio changing, the variations of experimental data such as axial strain, lateral deflection at mid-height, ultimate bearing capacity, and peak strain were comparatively analyzed. The failure pattern and failure mechanism of long columns were discussed. The results indicate that the ultimate bearing capacity of Larch Glulam columns gradually decreases as the slenderness radio increases and the failure mode is gradually converted from strength failure to instability failure. The ultimate load reduction factor is obtained by regression analysis based on the experiment results of Larch Glulam short columns. The basis for design and application of Larch Glulam columns are provided.

• Periodical: Applied Mechanics and Materials (Volume 847)
• Pages: 38-45
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.847.38
• Online since: July 2016
• Authors: Xian Yan Zhou*, Dan Zeng, Zhi Feng Wang
• Keywords: Larch Glulam Columns, Local Buckling, Reduction Factor, Slenderness Ratio, Ultimate Bearing Capacity

References

[1] Jochen Kohler, Staffan Svensson, Probabilistic representation of duration of load effects in timber structures, Engineering Structures, Vol. 33, No. 2, 2011, pp.462-467.

DOI: 10.1016/j.engstruct.2010.11.002

[2] Wei Guo, Ben-hua Fei, En-ling Chen, Hai-qing Ren, Hai-bin Zhou. Wood Structural Construction Industry in China, China wood industry, Vol. 2, 2009, pp.19-22.

[3] Shaoyin Huang. A Report of Experimental Research on Stability of Timber Members in Axial Compression (I). Journal of chongqing institute of architecture and engineering, Vol. 3, 1986, pp.42-52.

[4] Zhengzhong Wang, Yalin Li, Wugang Ren, A direct Computational Method for Stability Design of Wood Compression Roads, Journal of sichuan united university, Vol. 6, 1998, pp.51-53+58.

[5] Bo Zhou, Jia Cui, Shurong Zhou, Zhifu Li, Numerical Analysis on Stability Bearing Capacity of Glulam Axial Compressive Column, China steel structure association structure stability and fatigue branch, Steel structure engineering research (ten)—the 14th (ISSF-2014) conference on international academic communication and teaching China steel structure association structure stability and fatigue branch. China steel structure association structure stability and fatigue branch, Vol. 7, (2014).

DOI: 10.18057/icass2018.p.098

[6] Bruce G. Johnston, Column buckling theory: historic highlights, J. Struct. Eng, Vol. 109, 1983. p.2086-(2096).

DOI: 10.1061/(asce)0733-9445(1983)109:9(2086)

[7] Ryan Chancey, Stewart M. Verhulst, David W. Fowler, Deepak Ahuja. Built-up Column Stability in Wood Construction, Forensic Engineering Congress, 2009, pp.49-56.

DOI: 10.1061/41082(362)15

[8] G/T1931-2009, Measuring method of lumber moisture content, China building industry press, (1931).

[9] GB/T1933-2009, Measuring method of wood density, China building industry press, (1933).

[10] GB/T50329-2012, Standard for methods testing of timber structures, China building industry press, (2012).

[11] Feng Zhou, Ben Young. Strength and Behavior of Cold-Formed Steel Z-Sections Subjected to Major Axis Bending, Journal of structural engineering, Vol. 4, 2006, pp.41-43.

[12] Ben Young. Experimental Investigation of Cold-Formed Steel Lipped Angle Concentrically Loaded Compression Members, Journal of structural engineering, Vol. 6, 2005, pp.23-25.

DOI: 10.1061/(asce)0733-9445(2005)131:9(1390)

[13] Ben Young. Tests and Design of Fixed-Ended Cold-Formed Steel Plain Angle Columns, Journal of structural engineering, Vol. 11, 2004, pp.18-20.

DOI: 10.1061/(asce)0733-9445(2004)130:12(1931)

[14] Da-lin Liu. Comparison of Column Curves Employed in the American, European, and Chinese Relevant Codes. Progress in Steel Building Structures, Vol. 4, 2007, pp.52-56.

[15] GB 50005-2003, Code for design of timber structures, China building industry press, (2003).

[16] ANSI/AF&PA NDS-2005, National design specification for wood construction ASD/LRFD. America Forest and Paper Association. Washington: 2005, 1990-(1992).