摘要
在推导斜拉桥体系面内弯曲频率的基础上,引入斜拉桥体系拉索影响系数,反映斜拉桥体系的拉索对面内弯曲频率的影响,通过斜拉索影响度的概念定量分析拉索对斜拉桥体系弯曲频率影响的相对量值。通过对四座斜拉桥体系的对比分析,证明用斜拉索影响系数及斜拉索影响度的概念可以更直观反映矮塔斜拉桥与常规斜拉桥动力性能的差异。这个结论对认识矮塔斜拉桥与常规斜拉桥二者的受力特性有一定的参考意义。
On the basis of deriving the bend frequency in cable-stayed bridge system it introduces the influence coefficient of cable-stayed bridge system cables to reflect the influence of the cable-stayed bridge system cables on the bend frequency in the surface. Through quantity of the concept of cable-stayed cable influence degree it analyzes the corresponding quantity value of the influence of cables on cable-stayed system bend frequency. Through the comparison and analysis of four cable-stayed bridge system it proves that it can in object reflect the difference in dynamical performance between the cable-stayed bridge with a low pylon and the conventional cable-stayed bridge by the concept of cable-stayed cable influence coefficient and influence degree. This conclusion has a certain significance for reference in knowing the forced characteristics of the cable-stayed bridge with low pylon and the conventional cable-stayed bridge.
出处
《城市道桥与防洪》
2005年第2期41-43,共3页
Urban Roads Bridges & Flood Control
关键词
斜拉桥
矮塔
动力特性
弯曲频率
自振
cable-stayed bridge, low pylon, dynamical characteristics, band frequency, self-vibration
