摘要
基于辐射波浪理论建立了矩形空心桥墩流体控制方程,以自由表面波动条件、水底水质点运动边界条件、结构与水的速度连续条件为边界条件,采用分离变量法推导了矩形空心桥墩内、外域水体速度势一般解,进而导出了矩形空心墩内、外域水体的附加动水压力的解析式,对某桥墩自振特性的计算表明,该附加动水压力解析式具有较高的计算精度。
Based on the radiatire wave theory,a liquid control equation to hollow rectangular piers is deduced.With the condition of free surface wave,the movable boundary condition of a water particle of bottom water,and the continuity condition of structure and water speed being boandary conditions,then applying separation of variables,a general solution to liquid speed potential for inner and outer fields of hollow rectangular piers is gained.Further-more,an analytical solution to additional hydrodynamic pressure due to earthquake for inner and outer fields of hollow rectangular piers is developed.A typical example shows that this analytical solution to additional hydrodynamic pressure due to earthquake gains a relatively high calculating accuracy.
出处
《振动与冲击》
EI
CSCD
北大核心
2008年第2期53-56,共4页
Journal of Vibration and Shock
基金
国家自然科学基金资助项目(50678156)
交通部西部交通建设科技项目(2003-318-78011)
关键词
深水桥梁
矩形空心墩
动水压力
墩-水耦联振动
地震
deep-water bridge,rectangular hollow piers,hydrodynamic pressure,pier-water coupled vibration,earthquake
