论文信息 - Thermal Behavior of Steel Cables in Prestressed Steel Structures

Thermal Behavior of Steel Cables in Prestressed Steel Structures

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 1.92×10-5, 1.38×10-5, 1.87×10-5, and 1.195×10-5/°C, 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 beca...

[1] Naofumi Yamada,et al. Ultra-precise thermal expansion measurements of ceramic and steel gauge blocks with an interferometric dilatometer , 2000 .

[2] Satoru Toyooka,et al. Use of dynamic electronic speckle pattern interferometry with the Hilbert transform method to investigate thermal expansion of a joint material. , 2006, Applied optics.

[3] Gang-Ding Peng,et al. Measurement of the coefficient of thermal expansion of ultra-high strength cementitious composites using fibre optic sensors , 2007 .

[4] Harry E. Stewart,et al. Thermal and Mechanical Properties of Polyethylene Pipes , 2007 .

[5] Stanislav Kmet,et al. Nonlinear Analytical Solution for Cable Truss , 2006 .

[6] Robert Černý,et al. Measurement of linear thermal expansion coefficient of alkali-activated aluminosilicate composites up to 1000 °C , 2009 .

[7] Libo Yuan,et al. Model for measurement of thermal expansion coefficient of concrete by fiber optic sensor , 2002 .

[8] C. Boulay,et al. Evolution du coefficient de dilatation thermique du béton en fonction de sa maturité aux tout premiers âges , 1994 .

[9] null null. Structural Applications of Steel Cables for Buildings , 1997 .

[10] D. A. Gasparini,et al. Geometrically Nonlinear Static Behavior of Cable Structures , 2002 .

[11] P. Koudelova,et al. A measuring method for the determination of linear thermal expansion of porous materials at high temperatures , 1999 .