Design of Buried Reinforced Concrete Pipes with SIDD Type IV Installation

Abstract

One of the most common and widely used methods of buried reinforced concrete pipe design is the direct design method (SIDD) which was started being developed in 1970’s. In SIDD Type IV pipe installation, there is no need to use a special bedding material under the pipe invert because a rock material is used in foundation soil. In this study, the behavior of the buried reinforced concrete pipe with SIDD Type IV installation is investigated. In this scope, a parametric investigation was conducted with numerical analysis to design a concrete pipe considering soil-structure interaction concept. In numerical analysis, the effects of varying design parameters are investigated such as properties like burial depths and diameter of pipes. Therefore, a reinforcement area chart has been created according to the SIDD Type IV design calculation results which includes internal forces obtained from pipe cross section. Furthermore, these obtained reinforcement areas are compared with reinforcement areas used by Iller Bankası A.Ş which are widely used in our country for buried pipe design. Hence, the main scope is to design concrete pipes practically by using this chart for SIDD Type IV conditions.

Keywords

• Buried reinforced concrete pipes
• finite element analysis
• direct design

Tip 4 Kurulum ile Betonarme Boru Tasarımı

Abstract

Gömülü betonarme boru tasarımında yaygın olarak kullanılan yöntemlerden birisi ACPA tarafından 1970’li yıllarda geliştirilmeye başlanılan doğrudan tasarım yöntemidir. Bu yöntemde (SIDD) Tip 4 boru kurulumunda tabanda kayaç malzeme olmadığında boru tabanında özel bir yatak malzemesine ihtiyaç yoktur ve gömülme için herhangi bir kontrol gerektirmemektedir. Bu çalışmada, doğrudan tasarım yöntemine göre Tip 4 kurulum ile gömülen bir betonarme borunun davranışı incelenmiştir. Bu kapsamda zemin-yapı etkileşimi dikkate alınarak beton bir borunun tasarımı için parametrik sayısal analizler yapılmıştır. Analizlerde gömme derinliği ve boru çapı değişimi dikkate alınarak hesaplanan kesit tesirlerine göre gerekli donatı alanları belirlenerek Tip 4 kurulum koşulları için bir abak oluşturulmuştur. Ayrıca belirlenen bu donatı alanları, ülkemizde gömülü boruların tasarımında yaygın olarak kullanılan İller Bankası A.Ş’nin kullandığı donatı alanları ile karşılaştırılmıştır. Böylece Tip 4 kurulum koşulları için bu abaktan yararlanılarak pratik olarak tasarım yapılabilmesi amaçlanmıştır.

Keywords

• Gömülü betonarme borular
• sonlu elemanlar analizi
• doğrudan tasarım

References

1. [1] Marston, A., Anderson, A. C, “The Theory of Loads on Pipes in Ditches and Tests on Cement and Clay Drain Tile and Sewer Pipe”, Bulletin 31, Iowa Engineering Experimental Station, Ames, Iowa, 1913.
2. [2] Janssen, H.A, ‘’Versuche über Getreidedruck in Silozellen. Zeitschrift des Vereinesdeutscher Ingenieurs’’, 1895.
3. [3] Sargand, S.M, Hazen, G.A., Vaithianathan, E, and Hurd, J.O, ‘’Performance verification of a concrete pipe’’, Concrete International, July, pp. 23-27, 1995.
4. [4] Spangler, M.G, ‘’The Supporting Strength of Rigid Pipe Culverts’’, Bulletin 112, Iowa State College, 1933.
5. [5] Marston, A.’’The Theory of External Loads on Closed Conduits in the Light of the Latest Experiments’’, Paper presented at the Proceedings of the Highway Research Board 30, Washington, D.C, 1930.
6. [6] Canadian Standards Association (CSA), ‘’ Design of concrete structures’’, CSA A23. 3–04. CSA, Rexdale, Ontario, 2004.
7. [7] Kılıç, H., Akınay E., ‘’ Gömülü HDPE Borularda Esneme Davranışının İncelenmesi ‘’, Teknik Dergi, 2019 9373-9398, Yazı 548, 2019.
8. [8] Rajah, S., McCabe, M., Plattsmier, J. ‘’Classification and Specification of Bedding and Backfill for Buried Pipelines’’, Pipelines Conference, Miami Beach, Florida, 2012.

9. [9] Erdogmus, E., Tadros, M, ‘’ Behavior and Design of Buried Concrete Pipes Phase II ‘’, Nebraska Department of Roads Research Reports, 75, 2009.
10. [10] Allard, E., Naggar, E., ‘’Pressure Distribution around Rigid Culverts Considering Soil-Structure Interaction Effects ‘’, Int. J. Geomech., ASCE, 2016.
11. [11] ACPA, ‘’Concrete Pipe Technology Handbook‘’, American Concrete Pipe Association, 1993.
12. [12] ASCE 15-98, ‘’ Standard practice for direct design of buried precast concrete pipe using standard installation (SIDD)’’, 2000.
13. [13] ACPA, ‘’ Concrete Pipe Design Manual ‘’, American Concrete Pipe Association, 2011.
14. [14] Wong, L., Allouche, E., Dhar, A., Baumert, M., ve Moore, I., ‘’Long Term Monitoring of SIDD Type IV Installations’’ Can. Geotech. J., 43(4), 392-408, 2006.
15. [15] ACPA, ‘’Design Data 5. Multiple Pipe Installations: Trench Condition.’’, American Concrete Pipe Association, 2011.
16. [16] ASTM, ‘’Standard test method for laboratory determination of water (moisture) content of soil and rock by mass (D-2216–98).’’, Annual book of ASTM standards, American Society for Testing and Materials (ASTM), West Conshohocken, Pa., 1998.
17. [17] ASTM, ‘’Standard test methods for laboratory compactions of characteristics of soil using standard effort (D-698–00).’’, Annual book of ASTM standards, American Society for Testing and Materials (ASTM), West Conshohocken, Pa., 2000.
18. [18] İller Bankası A.Ş., “Beton boru çaplarına göre sarmal donatı alanları’’, İller Bankası A.Ş, Ankara, Temmuz 2015.