ABSTRACT

Seismic response of liquid sloshing in horizontally baffled rectangular container on deformable ground is evaluated. An equivalent mechanical model of baffled sloshing is developed. The strip partition method is presented to analytically derive the foundation impedances reproduced by nested lumped-parameter model. The system equations of motion are constructed via applying Hamilton’s principle. The detailed validations are performed against the available solutions. Effects of soil and baffle parameters on surface wave elevation and base loads under three earthquake records with different frequency contents are examined. Results highlight that seismic behaviors of baffled container have a high sensitivity to earthquake frequency content.

摘要

评估了水平挡板矩形容器在可变形地面上液体晃动的地震响应。开发了折流板晃动的等效力学模型。提出了条带分割法来分析推导嵌套集中参数模型再现的地基阻抗。应用哈密顿原理构建系统运动方程。针对可用解决方案执行详细验证。在三个不同频率内容的地震记录下，研究了土壤和挡板参数对表面波高程和基础载荷的影响。结果表明，带挡板的容器的地震行为对地震频率内容具有很高的敏感性。