| 考虑地基固结效应的储罐力学性能分析 |
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| 引用本文： | 赵福君,杜蓬娟.考虑地基固结效应的储罐力学性能分析[J].大连民族学院学报,2008,10(5). |
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| 作者姓名： | 赵福君 杜蓬娟 |
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| 作者单位： | 清华大学土木工程系,北京100084;大庆油田建设集团工程公司,黑龙江大庆163453;大连民族学院土木建筑工程学院,辽宁大连,116605 |
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| 基金项目： | 大庆石油管理局科技攻关资助项目 |
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| 摘 要： | 基于轴对称Biot固结理论,地基土采用Mohr-Coulomb理想弹塑性模型,对地基基础与储罐共同作用问题进行了非线性固结弹塑性有限元数值分析。计算结果表明,地基中孔隙水压力的消散与储罐底板的内力变形特性的时间效应具有密切的联系,底板的最大环向应力和最大径向应力都发生在边缘板附近,壁板最大环向应力发生在壁板底部,这和抗震计算中的"象足"现象相似,该位置容易发生屈曲破坏。所得结论对于地基基础储罐的设计具有一定的参考价值。
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| 关 键 词： | 固结 孔隙水压力 储罐底板 有限元分析 轴对称 |
The Mechanical Analysis of Liquid Storage Tank in consideration with the Consolidation Effect of Foundation |
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| ZHAO FU-jun,DU PENG-juan.The Mechanical Analysis of Liquid Storage Tank in consideration with the Consolidation Effect of Foundation[J].Journal of Dalian Nationalities University,2008,10(5). |
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| Authors: | ZHAO FU-jun DU PENG-juan |
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| Institution: | ZHAO FU-jun1,2,DU PENG-juan3 |
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| Abstract: | Based on axial symmetry Biot consolidation theory,and taking Mohr-Coulomb elastoplastic model to simulate the soil,the interaction between foundation and base plate is analyzed by nonlinear consolidation FE method.It is shown that the dissipation of aperture pressure in foundation is in close connection with the time-dependant stress of the base plate,the maximum hoop and axial stress of base plate are found in the vicinity of tank wall,and the maximum hoop stress of tank wall is found at the bottom area,which is prone to buckling damage similar to "elephant foot" in earthquake-proof calculation.The results are useful for the seismatic design of the foundation. |
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| Keywords: | consolidation aperture pressure base plate FE method axial symmetry |
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