工程力学 ›› 2018, Vol. 35 ›› Issue (7): 55-61.doi: 10.6052/j.issn.1000-4750.2017.03.0235

• 土木工程学科 • 上一篇    下一篇

考虑水体压缩性的椭圆柱体地震动水压力分析

王丕光, 赵密, 杜修力   

  1. 北京工业大学城市与工程安全减灾教育部重点实验室, 北京 100124
  • 收稿日期:2017-03-22 修回日期:2017-12-11 出版日期:2018-07-25 发布日期:2018-07-26
  • 通讯作者: 赵密(1980-),男,吉林人,教授,博士,博导,主要从事重大工程抗震领域研究(Email:zhaomi@bjut.edu.cn). E-mail:zhaomi@bjut.edu.cn
  • 作者简介:王丕光(1985-),男,山东人,助理研究员,博士,主要从事桥梁结构抗震领域的研究(E-mail:wangpiguang1985@126.com);杜修力(1963-),男,四川人,长江学者特聘教授,博士,博导,主要从事地震工程领域的研究(Email:duxiuli@bjut.edu.cn).
  • 基金资助:
    国家自然科学基金项目(51708010,51421005,51678015).

EARTHQUAKE INDUCED HYDRODYNAMIC PRESSURE ON ELLIPTICAL CYLINDER SURROUNDED BY COMPRESSIBLE WATER

WANG Pi-guang, ZHAO Mi, DU Xiu-li   

  1. Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China
  • Received:2017-03-22 Revised:2017-12-11 Online:2018-07-25 Published:2018-07-26

摘要: 地震作用下水与柱体结构的相互作用会对结构产生动水压力,该文研究椭圆柱体的地震动水压力。首先,基于椭圆坐标系推导了椭圆柱体地震动水压力的解析解;其次,通过ABAQUS声固耦合方法验证了提出的椭圆柱体地震动水压力的解析解,算例表明两者误差在1%左右;最后,引入无量纲参数数频率、宽深比和长短轴比,定量分析了水体压缩性对地震动水压力的影响。

关键词: 地震, 动水压力, 椭圆柱体, 水体压缩性, 辐射波浪理论

Abstract: Hydrodynamic pressure on cylinders would occur during water-cylinder interaction when the cylinders are subjected to earthquake actions. The hydrodynamic pressure on elliptical cylinders was investigated in this study. Firstly, the analytical solution for earthquake induced hydrodynamic pressure on the elliptical cylinder was derived in elliptical coordinate system. Secondly, the proposed analytical solution was verified by the acoustic-structure coupling method in commercial finite element software ABAQUS. The numerical examples indicated that the proposed analytical solutions were in good agreement with the numerical solutions. Thirdly, the influence of water compressibility on hydrodynamic pressure is analyzed quantitatively by introducing dimensionless parameters including the frequency ratio, width-depth ratio and ratio of long to short axis of the ellipse.

Key words: earthquake, hydrodynamic pressure, elliptical cylinder, water compressibility, radiation wave theory

中图分类号: 

  • U441.3
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