Advanced Steel Construction

Vol. 14, No. 4, pp. 694-703(2018)


BEHAVIOR OF PLASTIC GREENHOUSES UNDER

SYMMETRIC LOADING BEFORE AND AFTER

STRENGTHENING WITH TENSION TIES

 

S.H. Lee1, K.J. Shin2,* and H.D. Lee3

1  Assistant Professor, School of Convergence & Fusion System Engineering,

Kyungpook National University, 2559, Gyeongsang-daero, Sangju-si, Gyeongsangbuk-do, 37224, Republic of Korea

2  Professor, School of Architectural Engineering,

3  Associate Research Engineer, School of Architectural Engineering, 

Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea

*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it. )

Received:1 October 2017; Revised: 21 November 2017; Accepted: 13 December 2017

 

DOI:10.18057/IJASC.2018.14.4.10

 

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ABSTRACT

In recent years, climate anomalies have led to major snowfall and heat waves causing immeasurable loss of life and property. Particularly, sudden snowfall led to the collapse of several plastic greenhouse in South Korea within the last five years. This study proposes a strengthening method that uses tension ties to prevent the collapse of plastic greenhouses. Five full-scale frames were prepared to investigate the strengthening effect of the ties. A frame included a controlled specimen without tension ties, and the other frames were strengthened frames. The variables in this study were divided into two categories: (a) tension tie materials consisting of a fiber rope and a steel wire and (b) pretension forces of 100 N and 200 N. The testing results revealed that the normal frame failed in flexure, and that the failure of the strengthened frames occurred through out-of-plane buckling. The load capacities of the strengthened frames exceeded those of the reference frames without tension ties by 30% to 65%.

 

KEYWORDS

Plastic greenhouse, strengthening, tension tie, heavy snowfall, plastic hinge, flexure, collapse


REFERENCES

[1] National Disaster Information Center (NDIC), http://www.safekorea.go.kr (in Korea).

[2] Ministry for Food, Agriculture, Forestry and Fisheries (MIFAFF) and Rural Development Administration (RDA), “Standard Plan and Specification of Horticulture Facilities against Disaster”, 2010, http://www.rda.go.kr (in Korea).

[3] Lee, T.-H., Lee, D.-G. and Ahn, S.-K., “The Repair and Strengthening of Vinyl-house Providing Against Heavy Snow”, Proceedings of Architectural Institute of Korea, Seoul, South Korea, 2001, Vol. 21, No. 1, pp. 119-122.

[4] Lee, S.-G., Lee, J.-W. and Lee, H.-W., “Development of Reinforcement Strategy of One-span Vinyl House for Reduction of Damage by Heavy Snow”, Journal of Bio-Environment Control, 2005, Vol. 14, No. 2, pp. 131-137.

[5] Kim, B.-K., Lee, S.-H. and Shin, K.-J., “Reinforcing Method of Plastic-house Frame for Heavy Snow using Pretension Tie”, Proceeding of 7th International Symposium on Architectural Interchanges in Asia (ISAIA 2008), Beijing, China, 2008, pp. 876-879.

[6] Shin, D.-H., Lim, B.-H., Ju, G.-S. and Chae, S.-H., “Experimental Study on Strengthening Effect of Plastic Greenhouse using Tension-tie”, Proceeding of 9th Pacific Structural Steel Conference (PSSC 2010), Beijing, China, 2010, pp. 1573-1580.

[7] ASCE/SEI 7-10, Minimum Design Loads for Buildings and Other Structures, American Society of Civil Engineering (ASCE), 2010.

[8] KBC 2009, Korean Building Code and Commentary, Architectural Institute of Korea (AIK), 2009.

[9] MIDAS IT, MIDAS/GEN 2016 User’s Manual, MIDAS Information Technology Co., Ltd.,

[10] Kim, H.-J., Shin, K.-J., Kim, W.-J. and Huh, P.-S., “A Loading Apparatus for Frame of Arch Type (Patent No.1010434940000)”, Korean Intellectual Property Office (KIPO), 2011.

[11] Kassimali, A., “Structural Analysis. 3rd ed”, Nelson, 2005.

[12] Lee, S.-G., Shin, K.-J. and Lee, S.-H., “Plastic Analysis of Structure”. Kimoondang, 2012 (in Korea).