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School of Railway Engineering- Hiden
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Tale Zang railway bridge load test
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| Clear images and colors |
| Client : IRAN Railway Research Center
Consultant : The Educational chancellor of the School of Technology, the
University of Tehran
Contractor : Dr. Mohammad Sadegh Ma’refat
Tale Zang railway bridge is located in the 587th km. of Lorestan Railway route, between Dorood and Andimeshk. The bridge is 640 m. far from Tele Zang railway station and creates a route for trains to pass over a deep valley. The main span of the bridge is composed of six post-tensioned steel plate girders with the length and height of 72 and 2/5 meters, respectively. The 72-meter span was decreased into two spans of 15 and 42 meters by the use of two inclining columns (Picture 1). The route of the train over the bridge is a curve with a radius of 250 m. Both static and dynamic load tests were conducted on the bridge to investigate the reasons of the deck lateral vibration produced when a train passes over the bridge. Such a vibration has brought about a sense of insecurity among operators and reduced the operation speed. The loading was carried out by an 80-ton four-axle locomotive along with three freight cars. In its most critical load condition, the bridge was loaded by 307 tons and the structure response was measured by 88 strain gauge, LVDT, and accelerometer sensors.
Picture (1.A): Tale Zang Railway Bridge
Picture (1.B): Loading Tale Zang Railway Bridge with a 80-ton four-axle diesel
Picture (1.C): Loading Tale Zang Railway Bridge with the diesel and three freight cars
The presented papers:
1. Controlling the vibrations of Tale Zang Railway Bridge with tuned mass damper., Ataei, Agha Koochak, Zahrai, Marefat. The 6th international conference on Civil Engineering, Ordibehesht 1382, p. 473-80.
2. Tale Zang structural condition monitoring through load test. Marefat, M.S., Ataei, SH.. The 7th conference on railway transportation and infrastructures. Ordibehessht 1383. |
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