Earthquake-Induced Added Hydrodynamic Pressure on Circular Hollow Piers in Deep Water
-
摘要: 基于辐射波浪理论建立了圆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和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圆形空心桥墩内域水体速度势的一般解,进而导出了圆形空心桥墩内域水体附加动水压力的解析式,对希腊Rion-Antirion Bridge桥塔内力响应的计算结果表明,附加动水压力使桥墩的弯矩和剪力明显增大,内域水对桥墩地震响应的影响不可忽略.Abstract: Based on the radiation wave theory,a liquid control equation for hollow circular piers was deduced under the condition of free surface wave,the movement boundary condition of bottom water particles,and the continuity condition of structure and water velocities.By applying the variable separation method,a method of calculating the velocity of water in the inner area of a hollow circular pier was gained.Furthermore,an analytical method for added hydrodynamic pressure of water in the inner area of a hollow circular pier was proposed.A calculation of the added hydrodynamic pressure for Rion-Antirion bridge in Greece shows that the added hydrodynamic pressure will result in the increases of bent moment and shear force,and the effect of water in the inner area of a hollow circular pier can not be neglected.
-
Key words:
- deep-water bridge /
- circular hollow pier /
- hydrodynamic pressure /
- earthquake response
-
赖伟,王君杰,韦晓,等.桥墩地震动水效应的水下振动台试验研究[J].地震工程与工程振动,2006,26(6):164-171.LAI Wei,WANG Junjie,WEIXiao,et al.The shakingtabletestfor submerged bridgepier[J].Earthquake Engineeringand Engineering Vibration,2006,26(6):164-171.[2] 袁迎春,赖伟,王君杰,等.Morison方程中动水阻力项对桥梁桩柱地震反应的影响[J].世界地震工程,2005,21(4):88-94.YUAN Yingchun,LAJ Wei,WANG Junjie,et al.The effects of hydrodynamic damping on seismic response of bridge pfies[J].World Information on Earthquake Engineering,2005,21(4):88-94.[3] 赖伟,王君杰,胡世德.桩基础承台水平附加质量分析[J].同济大学学报,2004,32(10):1 339-1 343.LAI Wei,WANG Junjie,HU Shide.Analysis of horizontM added mass on pile cap[J].Journal of Toni University,2004,32(10):1 339-1 343.[4] 郑史雄.水桥墩考虑液固相互作用的地震反应分析[J].桥梁建设,1998(2):52-54.[5] 赖伟,王君杰,胡世德.地震下桥墩动水压力分析[J].同济大学学报,2004,32(1):1-5.LAI Wei,WANG Junjie,Hu Shide.Earthquake induced hydrodynamic pressure on bridge pier[J].Journal of Tongji University,2004,32(1):1-5.[6] 居荣初,曾心传.弹性结构与液体的耦联振动理论[M].北京:地震出版社,1983:128-159.[7] 刘振宇.地震作用下深水桥梁的动力响应研究[D].成都:西南交通大学土木工程学院,2007.[8] 郭敦仁.数学物理方法[M].北京:人民教育出版社,1965:76-92.[9] 奚定平.贝塞尔函数[M].北京:高等教育出版社,1998:12-21.[10] GOYAL A,CHOPRA A K.Hydrodynamic mass for intake towers[J].Journal of Engineering Mechanics,ASCE,1989,115(7):1 393-1 412.[11] GOYAL A,CHOPRA A K.Earthquake response spectrum analysis of intake-outlet towers[J].Journal of Engineering Mechanics,1989,115(7):1 413-1 433. -
点击查看大图
计量
- 文章访问数: 1856
- HTML全文浏览量: 75
- PDF下载量: 346
- 被引次数: 0
下载: