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

Barrett, Amy Smith; Kim, Hyeong; Frank, Karl H.; University of Texas at Austin. Center for Transportation Research

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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.

[PDF-3.49 MB]

English

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Details:

Creators:

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

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

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

Texas. Dept. of Transportation ; United States. Federal Highway Administration

Texas. Dept. of Transportation ; United States. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Bridges Bridges--Testing Finite Element Method Structural Tests
Publication/ Report Number:

FHWA/TX-10/5-4124-01-2 ; 5-4124-01-2

FHWA/TX-10/5-4124-01-2 ; 5-4124-01-2 Less -
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
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:9c7407346d878340de941340a30580f874ab3e2634ea965180f6ab52f21adc7f
Download URL:

https://rosap.ntl.bts.gov/view/dot/18283/dot_18283_DS1.pdf
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Field test and finite element of I-345 bridge in Dallas.

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