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STRUCTURAL
MONITORING OF THE
SOUTH BROADWAY OVERPASS
WICHITA, KANSAS
The first
consideration was to replace the structure at a cost of $12 million. The
Structural Integrity System instrumentation proved the bridge to be in excellent
condition. Repair of the deck and some of the piers, at a cost of $8000,000 million made the structure serviceable for decades
while saving the city millions of dollars.
This was the first bridge in the United States
to use carbon fiber reinforced polymer rods
to post tension the pier beams during rehabilitation.
| Installation of the On-Board Computer | Solar Panel, Antenna, Communications, Back-up Power |
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The structure was monitored for 18 months. One example of the data showed the bridge was reacting more to temperature fluctuations than it was to traffic loading. The following graph shows the movement of the structure over a 48 hour time span. The black line is the temperature in degrees Fahrenheit. The microstrain on Transducer 5 has a maximum change of 273. The 18 kip truck, the legal load limit at that time, had a microstrain change of 50. The conclusion was the bridge still had a great deal of inherit strength and stiffness indicating rehabilitation was a viable solution.
There is a detailed description of the rehabilitation of this structure in the November 2000 issue of Concrete International magazine. It is titled "City of Wichita Implements Pioneering Rehab Technologies" and is found on pages 38 to 42.
Projects
Sundial Bridge
California
Rolling Bascule
Florida
Royal Park Bridge
Florida
South Broadway Overpass
Kansas
US 24 Pottawatomie County
Kansas
Shawnee County Bridge
Kansas
Kemper Arena
Construction Missouri
Please call and talk to us concerning the monitoring of
bridges, buildings or other structures.
Thank you for visiting our web site.
Monica L. Svaty
Chief Executive Officer
Karl J. Svaty, Jr., PE, SE
President/Manager
316.634.1396
(NEW TELEPHONE NUMBER)
http://www.structuralintegritysys.com
U.S. Patent No. 5,421,204
U.S. Patent No. 5,507,188
Canadian Patent No. 2,163,653
all contents of these pages ©1996 Structural
Integrity Systems L.L.C. 5.96
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