Evaluation of the Earth Pressure Acting on Concrete Box Culverts

Abstract

Earth pressure on concrete box culverts is a key component of design and load-rating decisions. The American Association of State Highway and Transportation Officials has revised the design guidelines over the years to impose greater design/rating earth pressures for buried structures. Currently, the Iowa Department of Transportation uses the maximum and minimum lateral earth pressure of 36/18 lb/ft3 specified for load factor design (LFD) and allowable stress design (ASD) and 60/30 lb/ft3 for load and resistance factor design (LRFD). The objective of this research is to monitor and evaluate the real earth pressures acting on deep-buried culvert structures. To achieve this objective, two concrete box culverts–one in Ida County and the other in Crawford County–were monitored for more than 2.5 years and 1 year, respectively, to identify the realistic design soil pressure. The captured pressure, strain, and temperature data were analyzed to find the relation between the temperature and earth pressure experienced by the culverts. The measured vertical and lateral pressures were compared with the specified design pressure loading. The monitoring results from both culverts led to the consistent conclusion that the earth pressure experienced by the culverts was two to six times that of the design values with the LRFD and LFD/ASD methods. This paper revealed that the earth pressure acting on the deeply embedded culvert could be higher than the design-specified value. Further research was recommended to investigate the relation between the soil weight and culvert vertical/lateral pressure for Iowa design specifications.

Keywords

infrastructure structures culverts buried bridges and soil–structure interaction box concrete soil mechanics

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References

AASHTO. Standard Specifications for Highway Bridges, 13th ed. American Association of State Highway and Transportation Officials, Washington, D.C., 1983.

AASHTO. Standard Specifications for Highway Bridges, 14th ed. American Association of State Highway and Transportation Officials, Washington, D.C., 1987.

Wood

Newhouse

C. D.

Jayawickrama

Lawson

W. D.

Evaluating Existing Culverts for Load Capacity Allowing for Soil Structure Interaction. Texas Department of Transportation, Austin, 2009.

AASHTO. Standard Specifications for Highway Bridges, 15th ed. American Association of State Highway and Transportation Officials, Washington, D.C., 1992.

AASHTO. Standard Specifications for Highway Bridges, 16th ed. American Association of State Highway and Transportation Officials, Washington, D.C., 1996.

Spangler

M. G.

Discussion to ‘The Modification of the Pressures on Rigid Culverts with Fill Procedures’. Highway Research Record, Vol. 249, 1968, pp. 41–43.

Penman

A. D. M.

Charles

J. A.

Nash

J. K. T. L.

Humphreys

J. D.

Performance of Culvert Under Winscar Dam. Geotechnique, Vol. 25, No. 4, 1975, pp. 713–730.

Dasgupta

Sengupta

Large-Scale Model Test on Square Box Culvert Backfilled with Sand. Journal of Geotechnical Engineering, Vol. 117, No. 1, 1991, pp. 156–161.

Woodbury

W. H.

Bayer

E. J.

Botts

A. E.

Daley

C. A.

Pettus

J. K.

Wilks

J. R.

Corrugated Metal Culverts for Railroad Purposes. Preparing Specifications, with Assistance of Committee on Iron and Steel Structures. Bulletin - American Railway Engineering Association, Vol. 27, No. 284, 1926, pp. 794–828.

10.

Spangler

M. G.

Underground Conduits—An Appraisal of Modern Research. Proceedings of the American Society of Civil Engineers, Vol. 73, 1947, pp. 855–884.

11.

Spangler

M. G.

Field Measurements of the Settlement Ratios of Various Highway Culverts. Iowa Engineering Experiment Station Bulletin, No. 170. Iowa Engineering Experiment Station, Ames, 1950.

12.

Bennett

R. M.

Wood

S. M.

Drumm

E. C.

Rainwater

N. R.

Vertical Loads on Concrete Box Culverts Under High Embankments. Journal of Bridge Engineering, Vol. 10, No. 6, 2005, pp. 643–649.

13.

Kitane

McGrath

T. J.

Three-Dimensional Modeling of Live Loads on Culverts. Proc., Pipelines 2006: Service to the Owner, Chicago IL, American Society of Civil Engineers, Reston, VA, 2006, pp. 1–8.

14.

Pimentel

Costa

Félix

Figueiras

Behavior of Reinforced Concrete Box Culverts Under High Embankments. Journal of Structural Engineering, Vol. 135, No. 4, 2009, pp. 366–375.

15.

James

R. W.

Brown

D. E.

Bartoskewitz

R. E.

Coyle

H. M.

Earth Pressures on Reinforced Concrete Box Culverts. Research Report Number 294-2F. Texas Transportation Institute, College Station, 1986.

16.

Awwad

e. Finite Element Analysis of Concrete Box Culverts. Computing in Civil and Building Engineering. Proc., 8th International Conference ASCE, American Society of Civil Engineers, 2000, pp. 1051–1053.

17.

Katona

M. G.

Vittes

P. D.

Soil-Structure Analysis and Evaluation of Buried Box-Culvert Designs. Transportation Research Board, Washington, D.C., 1982.

18.

Oswald

C. J.

Analysis of Reinforced Concrete Culvert Considering Concrete Creep and Shrinkage. Transportation Research Board, Washington, D.C., 1996.

19.

Yang

M. Z.

Evaluation of Factors Affecting Earth Pressures on Buried Box Culverts. PhD dissertation. University of Tennessee, Knoxville, 2000.

20.

Wood

S. M.

Internal Forces in a Reinforced Concrete Box Culvert. Master’s thesis. The University of Tennessee, Knoxville, 2000.

21.

AASHTO. Standard Specifications for Highway Bridges, 12th ed. American Association of State Highway and Transportation Officials, Washington, D.C., 1977.

22.

Seed

R. B.

Duncan

J. M.

C. Y.

Finite Element Analysis of Compaction Problems. In Advanced Geotechnical Analysis: Development in Soil Mechanics and Foundation Engneering-4 ( Banerjee

P. K.

Butterfield

, eds.), Elsevier Applied Science, London and New York, NY, 1991, pp. 72–76.

23.

Geokon, Inc. Instruction Manual–Models 4800, 4810, 4815, 4820, and 4830 VW Earth Pressure Cells. 2011. https://www.geokon.com/content/manuals/4800_Earth_Pressure_Cells.pdf.

24.

Liu

Freeseman

Phares

B. M.

Concrete Box Culvert Earth Pressure Monitoring. No. IHRB Project TR-766. Iowa Highway Research Board, Iowa Department of Transportation, Ames, 2022.