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Journals / Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi / 2026 / Cilt: 7 Sayı: 2

The Determination of External Pressure Coeffcients on The Silo Surface According to Different Standards

Farklı Standartlara Göre Silo Yüzeyindeki Dış Basınç Katsayılarının Belirlenmesi

Hakan Kibar
Pages
107–114
Publication Date
2017-06-30
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

As a result, design must be made considering the C p coeffcients which can vary depending on the wind speed and the topographic conditions of the area in the calculation of the wind load which is one of the important environmental load groups in the silo design.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, wind external pressure coeffcient (C p ) values were investigated according to different height/diameter (h/d c ) and different wind arrival angles ( θ w ) to the silo surface in a steel cylindrical silo with 14 m height and 6 m diameter.
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Key Findings & Data:Depending on the EN and AS standards, positive C p coeffcients were obtained at different h/dc ratios up to a 20° wind arrival angle to the silo surface.
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Conclusion & Impact:As a result, design must be made considering the C p coeffcients which can vary depending on the wind speed and the topographic conditions of the area in the calculation of the wind load which is one of the important environmental load groups in the silo design.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Avustralya standardı · dış basınç katsayısı · Eurocode

Abstract

In this study, wind external pressure coeffcient (C p ) values were investigated according to different height/diameter (h/d c ) and different wind arrival angles ( θ w ) to the silo surface in a steel cylindrical silo with 14 m height and 6 m diameter. Eurocode (EN), Australian standard (AS) and British standard (BS) were used for the external pressure coeffcients in the study. In the study, coeffcient values were obtained calculating according to EN and AS standards and compared with the table values given for the BS standard. Depending on the EN and AS standards, positive C p coeffcients were obtained at different h/dc ratios up to a 20° wind arrival angle to the silo surface. Negative C p coeffcients were determined at higher values of the 20° wind arrival angle to the silo surface. Statistically signifcant differences (P<0.05) were found among the EN, AS and BS standards. As a result, design must be made considering the C p coeffcients which can vary depending on the wind speed and the topographic conditions of the area in the calculation of the wind load which is one of the important environmental load groups in the silo design.

Özet

Bu çalışmada 14 m yüksekliğinde ve 6 m çapa sahip çelik silindirik bir siloda farklı yükseklik/çap (h/d c ) ve silo yüzeyine farklı rüzgar geliş açılarına ( θ w ) göre rüzgar dış basınç katsayı (C p ) değerleri araştırılmıştır. Araştırmada dış basınç katsayıları için Eurocode (EN), Avustralya standardı (AS) ve İngiliz standardı (BS) kullanılmıştır. Araştırmada EN ve AS standartlarına göre hesaplamalar yapılarak katsayı değerleri elde edilmiş olup BS standardı için verilen çizelge değerleri ile karşılaştırmalar yapılmıştır. EN ve AS standartlarına bağlı olarak farklı h/d c oranlarında silo yüzeyine 20°’ lik rüzgar geliş açısına kadar pozitif C p katsayıları elde edilmiştir. Silo yüzeyine 20°’ lik rüzgar geliş açısından sonraki açı değerlerinde ise negatif C p katsayıları belirlenmiştir. İstatistik analiz sonucunda EN, AS ve BS standartları arasında istatiksel olarak P<0.05 düzeyinde önemli farklılıklar tespit edilmiştir. Sonuç olarak silo tasarımında önemli bir çevresel yük grubundan olan rüzgar yükünün hesaplanmasında rüzgar hızı, ve yörenin topoğrafk koşullarına bağlı olarak değişim gösterebilen C p katsayılarının dikkate alınarak tasarım yapılması gerekmektedir

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Cite This Article

Kibar, H. (2017). The Determination of External Pressure Coeffcients on The Silo Surface According to Different Standards. Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi, Cilt: 7 Sayı: 2, 107–114. https://ajindex.com/articles/1273021

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References (26)

  1. ACI 313-97, 1998. Standard Practice for Design and Construction of Concrete Silos and Stacking Tubes for Storing Granular Materials. American Concrete Institute.
  2. ACI 334, 1991. Reinforced Concrete Cooling Tower Shells-Practice and Commentary. American Concrete Institute, 334-2R.
  3. AS 3774, 1996. Loads on Bulk Containers. Sydney: Australian Standard.
  4. AS 1170.2: 1997, 2002. Structural Design Actions Part 2: Wind Actions. Sydney: Australian Standard.
  5. ASAE 1995, 2010. ANSI/ASAE EP545, Loads Exerted by Free-Flowing Grain on Shallow Storage Structures. American Society of Agricultural and Biological Engineers, ASABE, St. Joseph, MI 49085-9659, USA.
  6. BS 6399-2: 1997, 2002. Loading for Buildings - Part 2: Code of Practice for Wind Loads. British Standard.
  7. BS 5502-74: 1991, 2009. Buildings and Structures for Agriculture - Part 74: Code of Practice for Design and Construction of Bins and Silos for Combinable Crops. British Standard.
  8. Chen L, Rotter JM, 2012. Buckling of anchored cylindrical shells of uniform thickness under wind load. Engineering Structures, 41: 199-208.
  9. EN 1990, 2002. Basis of Structural Design. European Standard.
  10. EN 1991-1-4, 2005. Actions on Structures - Part 1-4: general Actions - Part 1-4, Wind Actions. European Standard.
  11. EN 1993-1-1, 2005. Design of Steel Structures - Part 1-1: General Rules and Rules for Buildings. European Standard.
  12. EN 1991-4, 2006. Actions on Structures - Part 4: Silos and Tanks. European Standard.
  13. EN 1993-4-1, 2007. Design of Steel Structures - Part 4-1: Silos. European Standard.
  14. Flores FG, Godoy LA, 1998. Buckling of short tanks due to hurricanes. Engineering Structures, 20(8): 752-760.
  15. Greiner R, Derler P, 1995. Effect of imperfections on wind-loaded cylindrical shells. Thin-Walled Structures, 23: 271-81.
  16. Greiner R, 1998. Cylindrical Shells: Wind Loading. Silos: Fundamentals of Theory, Behaviour, and Design. Taylor & Francis.
  17. Kibar H, 2016. Determining the functional characteristics of wheat and corn grains depending on storage time and temperature. Journal of Food Processing and Preservation, 40(4): 749-759.
  18. Macdonald PA, Kwok KCS, Holmes JD, 1988. Wind loads on circular storage bins, silos and tanks: I. Point pressure measurements on isolated structures. Journal of Wind Engineering and Industrial Aerodynamics, 31: 165-88.
  19. Portela G, Godoy LA, 2005a. Wind pressure sand buckling of cylindrical steel tanks with a conical roof. Journal of Construction Steel Research, 61(6): 786-807.
  20. Portela G, Godoy LA, 2005b, Wind pressure sand buckling of cylindrical steel tanks with a dome roof. Journal of Construction Steel Research, 61(6): 808-24.
  21. Purdy DM, Maher PE, Frederick D, 1967. Model studies of wind loads on flat-top cylinders. Journal of the Structural Division, ASCE, 93: 379-95.
  22. Sabransky IJ, Melbourne WH, 1987. Design pressure distribution on circular silos with conical roofs. Journal of Wind Engineering and Industrial Aerodynamics, 26: 65-84.
  23. TÜMAS, 2017. Meteorolojik veri arşiv sistemi. Meteoroloji İşleri Genel Müdürlüğü, http://tumas.dmi.gov.tr/wps/portal/. Erişim tarihi: 10 Nisan, 2017.
  24. Zhao Y, Cao OS, Su L, 2013. Buckling design of large circular steel silos subject to wind pressure. Thin-Walled Structures, 73: 337-349.
  25. Zhao Y, Lin Y, 2014a. Buckling of cylindrical open-topped steel tanks under wind load. Thin-Walled Structures, 79: 83-94.
  26. Zhao Y, Lin Y, Shen YB, 2014b. Wind loads on large cylindrical open-topped tanks in group. Thin-Walled Structures, 78: 108-120.