Thermal Behavior of Steel Cables in Prestressed Steel Structures
Publication: Journal of Materials in Civil Engineering
Volume 23, Issue 9
Abstract
Steel cable is the key component of prestressed steel structures. However, the thermal expansion coefficients of steel cables have not been adequately evaluated yet. This paper presents an experimental study on this topic. A total of 15 groups of specimens were tested, including steel-wire rope cable, steel strand cable, semiparallel steel tendon cable, and steel rod. The thermal expansion coefficients were measured by a manufactured testing instrument. The examined coefficients of the cables were , , , and , respectively. Subsequently, a cable-supported beam was further numerically analyzed considering temperature effects. The numerical results showed that temperature has a significant effect on the mechanical behavior of the beam when either steel-wire rope cable or semiparallel steel tendon cable is employed. When steel strand cable is adopted, the temperature effect is moderate. For steel rod, the effect is less. Therefore, the influence of prestress losses because of temperature changes should be considered for different types of steel cables in practical design.
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Acknowledgments
The authors would like to acknowledge the financial support of the National Natural Science Foundation of China (NSFCNo. 50778122) and the Program for New Century Excellent Talents in University (UNSPECIFIEDNCET-06-0228).
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 23 • Issue 9 • September 2011
Pages: 1265 - 1271
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Jun 16, 2009
Accepted: Feb 15, 2011
Published online: Feb 16, 2011
Published in print: Sep 1, 2011
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