The elastic modulus and deadweight of carbon fiber-reinforced polymer (CFRP) cables are different from those of steel cables.\nThus, the static and dynamic behaviors of cable-stayed bridges using CFRP cables are different from those of cable-stayed bridges\nusing steel cables. The static and dynamic performances of the two kinds of bridges with a span of 1000m were studied using the\nnumerical method. The effects of geometric nonlinear factors on static performance of the two kinds of cable-stayed bridges were\nanalyzed.The live load effects and temperature effects of the two cable-stayed bridges were also analyzed.The influences of design\nparameters, including different structural systems, the numbers of auxiliary piers, and the space arrangement types of cable, on the\ndynamic performance of the cable-stayed bridge using CFRP cables were also studied. Results demonstrate that sag effect of the\nCFRP cable ismuch smaller than that of steel cable. The temperature effects of CFRP cable-stayed bridge are less than those of steel\ncable-stayed bridge. The vertical bending natural vibration frequency of the CFRP cable-stayed bridge is generally lower than that\nof steel cable-stayed bridge, whereas the torsional natural vibration frequency of the former is higher than that of the latter.
Loading....