矮塔斜拉桥特征参数研究

INVESTIGATION OF CHARACTERISTIC PARAMETERS OF CABLE-STAYED BRIDGE WITH LOW TOWERS

结合一独塔两跨斜拉桥活载作用下的结构反应,引入“斜拉索荷载效应影响度”的概念定量分析了矮塔斜拉桥斜拉索作用的实质,并据此提出能综合反映矮塔斜拉桥结构及受力特征的参数“矮塔斜拉桥特征参数”;用“斜拉索荷载效应影响度”与“矮塔斜拉桥特征参数”的相关性定量描述矮塔斜拉桥的特点,对进一步认识矮塔斜拉桥的结构性能有一定的参考意义。

According to the structural responses of two span cable-stayed bridge with a single tower under live load, a conception of 搕he influence degree of cable load effect?is put forward and used to quantitatively analyze real function of cables of cable-stayed bridge with low towers. A parameter, 搕he characteristic parameter of cable-stayed bridge with low towers?which can comprehensively reflect the structural and mechanical properties of cable-stayed bridge with low towers, is put forward. With the coherency of ?the influence degree of cable load effect?and 搕he characteristic parameter of cable-stayed bridge with low towers? the properties of cable-stayed bridge with low towers are quantitatively described. Valuable conclusions are drawn which are helpful for further understanding the properties of cable-stayed bridge with low towers.