[논문]부석사 무량수전 배흘림 목재 기둥의 좌굴강도

윤순종; 김희수; 유형주; 한민혁; 김진경; 지해인

doi:10.11004/kosacs.2015.6.1.006

부석사 무량수전 배흘림 목재 기둥의 좌굴강도
Buckling Strength of Wooden Column with Entasis at the Muryangsugeon in Buseoksa-Temple 원문보기

복합신소재구조학회 논문집 = Journal of the Korean Society for Advanced Composite Structures, v.6 no.1, 2015년, pp.6 - 13

윤순종 (홍익대학교 건설도시공학부 토목공학전공) , 김희수 (홍익대학교 건설도시공학부 토목공학전공) , 유형주 (홍익대학교 건설도시공학부 토목공학전공) , 한민혁 (홍익대학교 건설도시공학부 토목공학전공) , 김진경 (홍익대학교 건설도시공학부 토목공학전공) , 지해인 (홍익대학교 건설도시공학부 토목공학전공)

Abstract ▼ AI-Helper

In this paper we present the result of investigations pertaining to the buckling strength of Zelkova Serrata (Elm-like) tree column with entasis at the Muryangsujeon in Buseoksa-Temple, Korea. Wooden columns with entasis had been used in the construction of ancient architectural buildings in Korea. It was not known why did they design columns with entasis of the buildings. It is just presumed that the reason may be the compensation of optical illusion, aesthetics, and/or structural safety. The question is not answered even today and it may not be possible to answer clearly and easily. In the paper, the buckling analyses are conducted on both of the wooden column with entasis and the prismatic wooden column by the successive approximations technique and the finite element methods, respectively. The results of analyses are compared and discussed.

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, prismatic column), average diameter of the column cross-section is used. The buckling analysis on the prismatic column with the same mechanical properties of the material is conducted for comparison purposes and to investigate the effect of entasis on the column buckling strength. The results are shown in Fig.
This study was conducted as a group study of structural engineering with undergraduate students. The financial and technical supports for the site trip and manuscript preparation provided by graduate students in the structural engineering laboratory are acknowledged.

가설 설정

The word “Entasis”, which is originated from Greek word, means the application of a convex curve to a surface for aesthetic purposes (Wikipedia/Entasis 2014). Definition of entasis is a slight convexity especially in the shaft of a column (Webster/Entasis 2014). This type of columns with entasis was used in an architecture early from Egyptian pyramids, but it continues to use in Greek column designs (i.

성능/효과

If we concluded the discussion for the effect of entasis on the column buckling load (hence strength), it can say that the buckling strength of column with entasis is 15%, approximately, larger than that of parallel sided column based on the result obtained by the method of successive approximations which is the most accurate and almost exact one.
Buckling analyses on the simply supported prismatic column with ten evenly spaced segments are conducted by the Euler buckling analysis (P_cr = π²EI/l²) and the successive approximations technique, respectively, and the results are compared. It was found that the buckling load by the successive approximations technique is 99.984% of the Euler buckling load. Therefore, it can be said that the result obtained by the method of successive approximations yields virtually the same as exact one.
The buckling loads obtained by the method of successive approximations, MIDAS®, ANSYS®, and GTSTRUDL® are larger about 15.2%, 9.2%, 14.2%, and 10.3%, respectively.

참고문헌 (14)

ANSYS $^{(R)}$ (2013), ANSYS Workbench 14.5.
Cheyenne, PVC Columns (2014), Available from: http://www.cheyennecompany.com, Accessed Aug. 24.
Google, Muryangsugeon (2015), Available from: http://www.google.co.kr, Accessed Jan. 17.
Google, Entasis Architecture (2015), Available from: http://www.google.co.kr, Accessed Jan. 17.
GTSTRUDL $^{(R)}$ (2013), GTSTRUDL Ver. SE13.
Kiaei, M. (2011), "Variation in the Wood Physical and Mechanical Properties of Zelkova Carpinifolia Trees along Longitudinal Direction," Middle-East Journal of Scientific Research, Vol. 9, No. 2, pp. 279-284.
Kim, K.-M. (2012), "Understanding of Wood as a Structural Member for Timber Bridge," Special Article, KSCE Magazine, Vol. 60, No. 9, pp. 10-20.
MIDAS $^{(R)}$ (2012), MIDAS Civil 2012+ Academic.
Nam, J.-H., Son, K.-W., and Yoon, S.-J. (2004), "Flexural Analysis of Radiata Pine Plywood Plate for the Concrete Form by the Laminate Plate Theory," Mokchae Konghak, Vol. 32, No. 4, pp. 36-45.
Timoshenko, S. P. and Gere, J. M. (1961), Theory of Elastic Stability, Second Edition, McGraw-Hill, Inc., New York, USA.
Thomson, P., Papadopoulou, G., and Vassiliou, E. (2007), "The Origins of Entasis: Illusion, Aesthetics or Engineering?," Spatial Vision, Vol. 20, No. 6, pp. 531-543.

상세보기
Wikipedia, Entasis (2014), Available from: http://en.wikipedia.org, Accessed Aug. 24.
Webster, Entasis (2014), Available from http://www.merriam-webster.com, Accessed Aug. 24.
Wikipedia, Geometric Mean (2014), Available from:http://en.wikipedia.org, Accessed Sep. 5.

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부석사 무량수전 배흘림 목재 기둥의 좌굴강도
Buckling Strength of Wooden Column with Entasis at the Muryangsugeon in Buseoksa-Temple 원문보기

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부석사 무량수전 배흘림 목재 기둥의 좌굴강도 Buckling Strength of Wooden Column with Entasis at the Muryangsugeon in Buseoksa-Temple 원문보기

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부석사 무량수전 배흘림 목재 기둥의 좌굴강도
Buckling Strength of Wooden Column with Entasis at the Muryangsugeon in Buseoksa-Temple 원문보기

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