混凝土自锚式悬索桥模型试验研究

Research on experiments of concrete self-anchored suspension bridge model

抚顺市万新大桥全长476.15m,主桥为15m+70m+160m+70m+15m的双塔双索面混凝土自锚式悬索桥.模型试验对万新大桥主桥模型的静力性能和动力特性进行了详细研究,并与理论计算结果进行了比较,模型试验结果与理论分析相吻合.试验表明中小跨度混凝土自锚式悬索桥的受力基本符合线弹性,可以用线弹性理论进行分析;用现有的有限位移理论分析混凝土自锚式悬索桥的静力和动力特性,并进行抗风、抗震设计是可靠的.

Fushun Wanxin Bridge is a concrete self-anchored suspension bridge with a total length of 476.15 m. It has two towers and double cable planes, and the spans of the main bridge are 15 m ＋ 70m ＋ 160 m ＋ 70 m ＋ 15 m. A detailed research on the static force performance and dynamic characteristics of the bridge model was made during the experiments. The results of the experiments are consistent with those of theoretical analysis. The conclusions of the experiments indicate that the mechanic performance of middle-span and small-span concrete self-anchored suspension bridge presents linear elasticity, and linear elastic theory is applicable to it. The static force performance and dynamic characteristics of concrete self-anchored suspension bridge can be analyzed by finite displacement theory, based on which wind resistance design and earthquake resistance design are reliable.