Load Tests of a Pretensioned Girder Bridge Near Happy, Texas

Poston, R. W.; Bradberry, T. E.; Breen, J. E.

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Load Tests of a Pretensioned Girder Bridge Near Happy, Texas

1985-04-01
By Poston, R. W. ; Bradberry, T. E. ; Breen, J. E.

File Language:

English

Details

Creators:

Poston, R. W. ; Bradberry, T. E. ; Breen, J. E.
Corporate Creators:

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

Texas State Department of Highways and Public Transportation
Subject/TRT Terms:

Cracking Deflection Girder Bridges Load Tests Monitoring Pretensioning
Publication/ Report Number:

921-1F
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Corporate Publisher:

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

At the request of the Bridge Division of the Texas State Department of Highways and Public Transportation (TSDHPT), a research study was conducted to investigate the load-deflection behavior of the middle two interior 135-ft spans of a bridge near Happy, Texas. Figure 1 shows this four-span bridge which was designed as a unidirectional single-lane ramp for access to U.S. 87. The structural capacity and serviceability of the middle two spans were in question because of excessive dead load sag. The objectives of this study were: 1. To conduct a load test of the two interior 135-ft spans using vehicles which simulated service plus impact load allowance magnitudes for a single lane bridge. 2. To monitor the load-deflection behavior of typical exterior and interior girders of the loaded spans. 3. To visually inspect the instrumented girders for cracks before and after the load test. 4. To calculate probable deflections from material properties and stressing histories reported by TSDHPT. 5. To report the test results and to assess the structural performance of the bridge based on these test results. This report describes the load test of the bridge near Happy, Texas, and summarizes the results.
Format:

PDF
Funding:

3-40-85-921
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:6239775c1a579cf3099a79a7f087b81b6ba7483c93606d8275482e07b2cd8d6e0e624053170925f1c2738267373a0da6acfb78024e87891f63692643c7a43c35
Download URL:

https://rosap.ntl.bts.gov/view/dot/86193/dot_86193_DS1.pdf
File Type:

[PDF - 1.11 MB ]

File Language:

English

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