Field test and finite element of I-345 bridge in Dallas.

Barrett, Amy Smith; Kim, Hyeong; Frank, Karl H.

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Field test and finite element of I-345 bridge in Dallas.

2009-07-01
By Barrett, Amy Smith ; Kim, Hyeong ; Frank, Karl H.

File Language:

English

Details

Creators:

Barrett, Amy Smith ; Kim, Hyeong ; Frank, Karl H.
Corporate Creators:

University of Texas at Austin. Center for Transportation Research
Corporate Contributors:

Texas. Dept. of Transportation ; United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA/TX-10/5-4124-01-2 ; 5-4124-01-2
Resource Type:

Tech Report
Geographical Coverage:

Texas
Edition:

Technical report.
Corporate Publisher:

University of Texas at Austin. Center for Transportation Research
Abstract:

This report documents a field test to determine the stresses at areas where fatigue cracks had formed in the ; bridges. Two bridges were instrumented and subjected to controlled truck traffic. In addition, the service fatigue ; stresses were evaluated by monitoring the stresses for a 1 week period after the controlled truck testing. A three ; dimensional finite element model was constructed of each bridge. The stresses from the field tests and the model ; were compared. The floor beams were found to behave as composite with the bridge deck when the truck loads ; were near floor beams. The local stress at the critical sections was in reasonable agreement between the field and ; analytical results. Proposed retrofit schemes were evaluated in the analytical model. In general, the proposed ; schemes appear to reduce the stresses at the critical locations, however high stresses are generated in other areas ; that have not cracked. The unsymmetrical support conditions of some of the girder units cause twisting of bridge ; section. Adding of additional supports to make the bridge support symmetrical will also improve fatigue ; performance of the bridge.
Format:

PDF
Funding:

5-4124-01
Download URL:

https://rosap.ntl.bts.gov/view/dot/18283/dot_18283_DS1.pdf
File Type:

[PDF - 3.49 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:9c7407346d878340de941340a30580f874ab3e2634ea965180f6ab52f21adc7f

File Language:

English

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