综合国内研究现状及相应规范，对某吊桥锈蚀后的钢绞线主缆进行了现场外观检测，确定了钢绞线锈蚀等级的标准及锈蚀钢绞线强度公式，提出了确定主缆剩余承载力方法，并通过抗拉强度试验，证明了该方法在工程实践中的有效性。%This paper comprehensive domestic research situation and the corresponding norms,undertakes the site outlook test on the main cable of the steel strand of some suspension bridge after corrosion,the field detection of the appearance of determine the corrosion of steel strand grade standard and corrosion of steel strand strength formula,is presented for determining residual capacity method of main cable,and verified by ten-sile strength test. The test shows that this method is effective in engineering practice.
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