关于旧桥承载力评定方法适应性的探讨

根据旧桥承载力评定方法新体系，结合多座二、三、四类桥的承载力计算评定实例，对各种评定系数及承载力计算进行对比，指出新体系对二类桥承载能力评定具有不合理因素，主要因检算系数取值范围偏大所致，进而对检算系数取值进行探讨，并提出了改进建议。

Discussion on the evaluating method of bearing strength to existing bridge

According to the new evaluating method of bearing strength to existing bridge,combined with bearing strength evaluation instances of many second-class、third-class and fourth-class bridges,every kind of evaluation coefficient and bearing strength calculations are compared.The result indicates that with regard to second-class bridges the new systerm has unreasonable factor,mianly for checking coefficient ranging larger. And then further discussed the checking coefficient,and proposed some improved suggestion.