摘要
以某高桩承台连续刚构桥为工程背景,采用Morison方程计算不同水深时的动水压力,并利用纤维模型对地震作用进行非线性时程反应分析。结果表明:动水压力会改变桥梁的自振特性,随着水深的增加,桥梁地震反应也越来越大,在进行桥梁设计时应考虑动水压力的影响。
Take a continuous rigid frame bridge with elevated pile pier as an engineering background, hydrodynamic pressure are calculated with Morison equation under the condition of different water depth, on this base, the nonlinear time history response is analyzed by establishing fiber model. Results show that hydrodynamic pressure can change the natural vibration characteristics of bridge, and seismic response increases with the increase of water depth, therefor the effect of hydrodynamic pressure must be considered.
出处
《现代交通技术》
2016年第5期30-32,39,共4页
Modern Transportation Technology
关键词
桥梁工程
连续刚构桥
动水压力
Morison方程
地震反应
bridge engineering
continuous rigid frame bridge
hydrodynamic pressure
Morison equation
seismic response
