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Health Monitoring of the Veterans' Glass City Skyway: Vibrating Wire Strain Gage Testing, Study of Temperature Gradients and a Baseline Truck Test

Bosworth, Kyle Judson
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1197693985

Abstract Details

2007, Master of Science in Civil Engineering, University of Toledo, Civil Engineering.
The Veterans’ Glass City Skyway (VGCS) is the new prestressed, post-tensioned segmental concrete cable-stay bridge that opened in June of 2007 and carries I-280 over the Maumee River. The VGCS began construction in 2001 and was monitored during most of construction by the University Research Team (URT), which includes professors and students from both The University of Cincinnati and The University of Toledo. This thesis is composed of three separate studies related to the health and monitoring of the VGCS cable stay bridge. One task was to confirm that vibrating wire strain gages installed in the bridge, as well as the rest of the data collection system, worked properly during construction when data was being collected. In order to accomplish this, a test fixture was designed and manufactured. With this test fixture the URT was able to perform a chain calibration on the entire data acquisition system and confirmed the validity of the field results. The second task involved studying temperature gradients within the concrete box girders to preliminarily assess if the VGCS response is consistent with that of the AASHTO design code. To achieve this objective, the thermistors that are attached with the vibrating wire strain gages were studied in order to confirm their reliability. It was determined that the thermistors functioned reliably and then the temperature gradients within the bridge were compared to that of the AASHTO design code, finding that the VGCS falls within the temperature design envelope. The third task consisted of designing and executing a truck test, performing the initial data reduction and assessment of the bridge response. To accomplish this goal, prior construction load tests performed on the VGCS were studied, and output from the progressively-calibrated Larsa computer model was utilized. From this task it was found that the baseline data confirms the Larsa model and that it may be used in the future to monitor the health of the bridge. While each area of interest is separated in one sense, the three tasks all relate to the structural health and long-term monitoring of the VGCS.
Douglas Nims (Advisor)
143 p.
Engineering, Civil
Cable-stayed bridge; Prestressed concrete; Post-tensioned concrete; Vibrating wire strain gage; Temperature gradient; Truck test

Recommended Citations

Citations

  • Bosworth, K. J. (2007). Health Monitoring of the Veterans' Glass City Skyway: Vibrating Wire Strain Gage Testing, Study of Temperature Gradients and a Baseline Truck Test [Master's thesis, University of Toledo]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1197693985

    APA Style (7th edition)

  • Bosworth, Kyle. Health Monitoring of the Veterans' Glass City Skyway: Vibrating Wire Strain Gage Testing, Study of Temperature Gradients and a Baseline Truck Test. 2007. University of Toledo, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=toledo1197693985.

    MLA Style (8th edition)

  • Bosworth, Kyle. "Health Monitoring of the Veterans' Glass City Skyway: Vibrating Wire Strain Gage Testing, Study of Temperature Gradients and a Baseline Truck Test." Master's thesis, University of Toledo, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1197693985

    Chicago Manual of Style (17th edition)

toledo1197693985
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© 2007, all rights reserved.
This open access ETD is published by University of Toledo and OhioLINK.