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 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...
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