摘要
结合小西湖双塔三跨单索面矮塔斜拉桥地震荷载作用下的结构动力反应,引入“斜拉索动力荷载效应影响度”的概念定量分析了矮塔斜拉桥斜拉索在地震荷载下的实质作用,并据此提炼出能综合反映矮塔斜拉桥结构动力特征的参数———“矮塔斜拉桥动力特征参数”;用“斜拉索动力荷载效应影响度”与“矮塔斜拉桥动力特征参数”的相关性定量描述矮塔斜拉桥的动力特点,对进一步认识矮塔斜拉桥的动力性能有一定的参考意义。
According to structural response of a double pylons 3-span cable-stayed bridge with single cable plane under seismic load,a concept of 'the influence degree of cable dynamic load effect'is put forward and used to quantitatively analyze real function of cables of an extradosed cable-stayed bridge.In view of these analyses,a concept of 'the characteristic parameter of the extradosed cable-stayed bridge'which can comprehensively reflect its structural and mechanical properties is put forward.Using the correlation between'the influence degree of cable dynamic load effect'and 'the characteristic parameter of the extradosed cable-stayed bridge',the dynamic features of the extradosed cable-stayed bridge are described quantitatively,the conclusions are valuable to further understand dynamic properties of extradosed cable-stayed bridges.
出处
《振动与冲击》
EI
CSCD
北大核心
2006年第6期150-153,共4页
Journal of Vibration and Shock
基金
甘肃省自然科学基金资助项目(3ZS042-B25-032)
兰州交通大学"青蓝"人才工程基金计划资助
关键词
矮塔斜拉桥
斜拉桥
荷载效应
特征参数
动力性能
extradosed cable-stayed bridge,cable-stayed bridge, load effect,characteristic parameter,dynamic property
