Earth Pressures on Reinforced Concrete Box Culverts

James, Ray W.; Brown, Dale E.; Bartoskewitz, Richard E.; Coyle, Harry M.

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Earth Pressures on Reinforced Concrete Box Culverts

1986-01-01
By James, Ray W. ; Brown, Dale E. ; Bartoskewitz, Richard E. ; ...

File Language:

English

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Creators:

James, Ray W. ; Brown, Dale E. ; Bartoskewitz, Richard E. ; Coyle, Harry M.
Corporate Creators:

Texas Transportation Institute. Texas A&M University
Corporate Contributors:

Texas State Department of Highways and Public Transportation ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Backfill Soils Box Culverts Bridges Deflection Earth Pressure Reinforced Concrete
Publication/ Report Number:

FHWA/TX-86/ 27+294-2F
Resource Type:

Tech Report
Geographical Coverage:

United States ; Texas
Edition:

Final Report: September 1980 - January 1986
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Abstract:

An 8 ft. by 44 ft. reinforced concrete box culvert was constructed and instrumented with twenty pressure cells on the top and side slabs, and with six resistance strain gauges on the tension reinforcing steel in the top slab. Earth pressures, reinforcing steel strains and top slab deflections were measured for various combinations of dead load and live load. Dead loads were due to backfill and earth covers up to 8 ft over the top slab. Live loads were applied by parking a test vehicle having a 48 kip (214 kN) tandem rear axle at various distances from the centerline of the culvert along a perpendicular roadway constructed on the embankment above the culvert. A set of empirical equations was developed to fit the measured earth pressures. These equations account for the effect of individual wheel loads applied at any point on the horizontal roadway above the culvert. Reinforcing steel stresses, calculated from the measured strains are also presented. A comparison of the measured pressures with the AASHTO design pressures is also presented, and a proposed design procedure is developed and presented.
Format:

PDF
Funding:

2-5-81-294
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:ba31763cdbc6b672e6de3f9d5b0664784003d76255d40ea6800da1aeae36d3532286613b3d1c055777bbfab45d70f159176a8bfeae8aec721e25711d1c6814da
Download URL:

https://rosap.ntl.bts.gov/view/dot/84841/dot_84841_DS1.pdf
File Type:

[PDF - 11.57 MB ]

File Language:

English

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