Live load effect in reinforced concrete box culverts under soil fill.

Orton, Sarah; Loehr, Erik; Boeckmann, Andrew; Havens, Garrett

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Live load effect in reinforced concrete box culverts under soil fill.

2013-08-01
By Orton, Sarah ; Loehr, Erik ; Boeckmann, Andrew

File Language:

English

Details

Creators:

Orton, Sarah ; Loehr, Erik ; Boeckmann, Andrew ; Havens, Garrett
Corporate Creators:

University of Missouri--Columbia
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

cmr14-009
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Missouri. Dept. of Transportation. Research, Development and Technology Division
Abstract:

Live load effects in box culverts generally diminish with soil fill thickness. In addition, the effect of ; the live load may be nearly negligible compared to the dead loads when significant fill is placed above the ; crown of the culvert. The objective of this study is to determine the effects of live load (truck loads) on ; bridge-size (spans greater than 20 ft) reinforced concrete box culverts under soil fills of different thickness. ; The study considered the field testing of 10 existing reinforced concrete box culverts with fill depths ; ranging from 2.5 ft to 13.5 ft. Instrumentation of the culvert consisted of 12 reusable strain transducers and ; 12 LVDTs. The instrumentation was designed to be applied, used, and removed in one day of testing. ; Loaded trucks were driven over the culvert to provide live load. The results of the testing show that live load ; effect does diminish with increasing fill depth. The AASHTO LRFD and LFD Standard Specifications ; were both overly conservative in predicting strains and displacements compared to the field data for fill ; depths less than 8 ft. At above 6 ft of fill the measured effect of the live load was less than 10% of the dead ; load effect. This could be considered as a point at which to ignore the live load effect and therefore not load ; rate the culvert.
Format:

PDF
Alternate URL:

http://ntl.bts.gov/lib/51000/51400/51438/cmr14-009AppA.pdf
Funding:

TR201314
Download URL:

https://rosap.ntl.bts.gov/view/dot/27024/dot_27024_DS1.pdf
File Type:

[PDF - 1.93 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:7832b4dd4ea6f441222ca7141577f266216e80d00be10b013642a7bc872e0250

File Language:

English

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