Abstract
Buried pipes and culverts installed under embankments supporting transport infrastructure are often designed to carry both static and cyclic loading. Earth pressures acting on these structures are affected by the installation conditions. The induced trench approach is used to reduce the contact pressure on rigid culvert’s walls under heavy embankments by utilizing the shear strength within the backfill. A compressible material, such as the EPS geofoam blocks, is generally placed above the buried structure and the overlying prism of soil is allowed to move downward. In this work, the distribution of the contact pressure on a pipe buried within granular material and experiencing cyclic loading is investigated. Results are presented at key locations on the pipe circumference and the changes in contact pressure during cyclic loading are examined. Results show that the installation of EPS geofoam block over the pipe resulted in overall enhanced performance of the soil–geofoam–pipe system with significant reduction in the measured radial pressure, particularly at the crown and invert locations. Less pronounced effect was found at the sides of the pipe. These results confirmed that the inclusion of EPS geofoam within the backfill material can significantly enhance the response of buried structures particularly for shallow-buried pipes under repeated loading.
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References
CSA (2006) Canadian highway bridge design code—CHBDC. Mississauga, Canada, Canadian Standards Association, p 930
AASHTO (2007) American Association of State Highway and Transportation Officials, LRFD Bridge Design Specifications, 4th edn. D.C., USA, Washington
McAffee RP, Valsangkar AJ (2008) Field Performance, centrifuge testing, and numerical modelling of an induced trench installation. Can Geotech J 45(1):85–101
Sladen JA, Oswell JM (1988) The induced trench method—a critical review and case history. Can Geotech J 25(3):541–549
Vaslestad J, Johansen TH, Holm W (1993) Load reduction on rigid culverts beneath high fills: long-term behavior. Transp Res Rec 1415:58–68
Liedberg NSD (1997) Load reduction on a rigid pipe: pilot study of a soft cushion installation. Transp Res Rec 1594:217–223
Sun L, Hopkins T, Beckham T (2011) Long-term monitoring of culvert load reduction using an imperfect ditch backfilled with Geofoam. Transp Res Rec 2212:56–64
Oshati OS, Valsangkar AJ, Schriver AB (2012) Earth pressures exerted on an induced trench cast-in-place double-cell rectangular box culvert. Can Geotech J 49(11):1267–1284
Meguid MA, Youssef T (2018) Experimental investigation of the earth pressure distribution on buried pipes backfilled with tire-derived aggregate. Transp Geotech 14(1):117–125
Meguid MA, Hussein M, Ahmed MR, Omeman Z, Whalen J (2017) Investigation of soil-geosynthetic-structure interaction associated with induced trench installation. Geotext Geomembr 45(4):320–330
Meguid MA, Ahmed MR, Hussein M, Omeman Z (2017) Earth pressure distribution on a rigid box covered with U-shaped geofoam wrap. Int J Geosynth Ground Eng 3(2):1–11
Moghaddas Tafreshi SN, Tavakoli Mehrjardi GH, Dawson AR (2012) Buried pipes in rubber-soil backfilled trenches under cyclic loading. J Geotech Geoenviron Eng 138(11):1346–1356
Sheil BB, Martin CM, Byrne BW, Plant M, Williams K, Coyne D (2012) Full-scale laboratory testing of a buried pipeline in sand subjected to cyclic axial displacements. Géotechnique 68(8):684–698
Kim K, Yoo CH (2002) Design loading for deeply buried box culverts. highway research center, Report No. IR-02-03. Auburn University, Alabama, USA, p 215
Kang J, Parker F, Kang YJ, Yoo CH (2008) Effects of frictional forces acting on sidewalls of buried box culverts. Int J Numer Anal Meth Geomech 32(3):289–306
McGuigan BL, Valsangkar AJ (2011) Earth pressures on twin positive projecting and induced trench box culverts under high embankments. Can Geotech J 48(2):173–185
Hazarika H (2006) Stress-strain modeling of EPS geofoam for large-strain applications. Geotext Geomembr 24(2):79–90
Ekanayake SD, Liyanapathirana DS, Leo CJ (2015) Numerical simulation of EPS geofoam behaviour in triaxial tests. Eng Comput 32(5):1372–1390
Meguid MA, Hussein MG (2017) A numerical procedure for the assessment of contact pressures on buried structures overlain by EPS geofoam inclusion. Int J Geosynth Ground Eng 3(2):1–14
Pressure Profile System Inc., Tactarray distributed pressure measurement system. https://www.pressureprofile.com/tact-array-sensors/
Ahmed M, Tran V, Meguid MA (2015) On the role of geogrid reinforcement in reducing earth pressures on buried pipes. Soils Found 5(33):588–599
ASTM D1621-10 Standard Test Method for compressive properties of rigid cellular plastics
Khan MI, Meguid MA (2018) Experimental investigation of the shear behavior of EPS geofoam. Int J Geosynth Ground Eng 4(2):1–12
Hoeg K (1968) Stresses against underground structural cylinders. Am Soc Civ Eng J Soil Mech Found Div 94(4):833–858
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This study was funded by Natural Sciences and Engineering Research Council of Canada (Grant no. RGPIN-2016-05263).
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Meguid, M.A., Ahmed, M.R. Earth Pressure Distribution on Buried Pipes Installed with Geofoam Inclusion and Subjected to Cyclic Loading. Int. J. of Geosynth. and Ground Eng. 6, 2 (2020). https://doi.org/10.1007/s40891-020-0187-5
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DOI: https://doi.org/10.1007/s40891-020-0187-5