摘要
对地震下圆柱形桥墩上的动水压力,提出了一个半解析半数值方法,针对弹性桥墩结构,利用Trefftz完备函数分别构造了流体的弹性振动速度势和刚体运动速度势,采用梁单元有限元方法求解耦联运动方程,与其他方法相比,这一方法计算相对简单、有效,并可考虑表面波效应和流体的压缩影响.算例表明,这一方法具有较高的精度.
A semi-analytical and semi-numerical approach for earthquake induced hydrodynamic pressure on pier was developed. Trefftz-complete functions were used to form the potentials of rigid movement and those of elastic vibration. The coupling kinetic equations were solved by finite element method with beam elements. This method is a relatively simple and efficient approach, retaining the gravity waves on the water surface and the compressibility. Examples were presented to illustrated the accuracy of this method.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第1期1-5,共5页
Journal of Tongji University:Natural Science
基金
国家自然科学基金资助项目(40072088)
关键词
深水桥墩
地震
动水压力
pier in deep water
earthquake
hydrodynamic pressure
