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地震时壳体内外的异重流体压力

Nonuniform fluid pressure on cylindrical shells during an earthquake

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【作者】 马吉明谢省宗徐逸群

【Author】 MA Jiming1, XIE Shengzong2, XU Yiqun2(1. Dept. of Hydraulic Engineering, Tsinghua University, Beijing 100084, China; 2. China Institute of Water Conservancy andHydroelectric Research, Beijing 100038, China)

【机构】 清华大学水利水电工程系中国水利水电科学研究院水力学所中国水利水电科学研究院水力学所 北京 100084北京 100038北京 100038

【摘要】 从柱座标系下的势流方程出发,推导了异重流体在谐振情况下的势流方程的解,得到了柱内外与环域中的异重流体压力的理论计算公式。给出了壳体内外表面压力系数的计算式。依据所推公式进行了计算,绘制了曲线图,曲线显示了合理的变化趋势。

【Abstract】 This paper presents a study of the nonuniform fluid pressure on cylindrical surfaces during an earthquake. The density of fluid varies with the depth, or changes in different layers. In the study, the vibration of the earthquake is assumed to be in the horizontal direction. Formulae considering the potential fields of fluid, pressure and pressure coefficients are derived. The curves derived from computations show that the pressure on the cylindrical surface under conditions of nonuniform density fluid is greater than that of clean water. The pressure on the surface is influenced by the ratio of bottom to surface densities as well as the ratio of radium to water depth.

【关键词】 地震异重流体动水压力
【Key words】 earthquakenonuniform density fluidhydrodynamic pressure
  • 【文献出处】 海洋工程 ,The Ocean Engineering , 编辑部邮箱 ,2003年01期
  • 【分类号】TV131
  • 【下载频次】30
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