| 深水桥梁墩水耦合抗震分析方法 |
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| 引用本文： | 刘浪,杨万理,李乔.深水桥梁墩水耦合抗震分析方法[J].西南交通大学学报,2015,28(3):449-453. |
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| 作者姓名： | 刘浪 杨万理 李乔 |
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| 基金项目： | 国家973计划资助项目(2011CB013605-5)国家自然科学基金资助项目(51108383) |
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| 摘 要： | 为正确采用动水压力计算方法,提出了一种新的深水桥梁墩水耦合计算方法结合法,即将Morison方程与计算流体力学相结合,分析深水桥梁墩水耦合抗震问题.ANSYS-CFX模型计算表明:结合法能较好地进行墩水耦合抗震分析;深水环境使墩顶最大弹性位移减小,最大刚体位移增大,结构整体变形增大;刚体运动附加动水力对桥墩起主要作用,但应同时考虑弹性振动引起的动水压力.
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| 关 键 词： | 深水桥梁 流固耦合 结合法 地震响应 |
| 收稿时间： | 2014-05-04 |
Seismic Analysis Method of Deep-Water Bridge Pier and Water Coupling |
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| LIU Lang,YANG Wanli,LI Qiao.Seismic Analysis Method of Deep-Water Bridge Pier and Water Coupling[J].Journal of Southwest Jiaotong University,2015,28(3):449-453. |
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| Authors: | LIU Lang YANG Wanli LI Qiao |
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| Abstract: | To adopt a right method to calculate hydrodynamic pressure, a novel method, combining the Morison equation with CFD (computational fluid dynamics), for calculating the seismic responses of a deep-water bridge under pier-water coupling was proposed. The results based on the ANSYS-CFX model show that the proposed method can calculate the seismic responses of a deep-water bridge under pier-water coupling effectively. A deep-water environment will decrease the maximum elastic displace-ment at pier top, but it will increase the maximum rigid displacement and the total stsructure displacement. Additional hydrodynamic pressure generated by rigid motion plays a major role, and the effect of elastic vibration must be considered. |
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