| Research of air-cushion isolation effects on high arch dam reservoir |
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| 基金项目： | supported by the National Natural Science Foun-dation of China （90715026） |
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| 摘 要： | A three-dimensional (3D) finite element model of air-cushion isolated arch dam is presented with the nonlinear gas-liquid-solid multi-field dynamic coupling effect taken into account.In this model,the displacement formulation in Lagrange method,pressure formulation in Euler method,nonlinear contact model based on Coulomb friction law are applied to the air-cushion,reservoir and contraction joint domain,respectively.The dynamic response of Jinping I arch dam with a height of 305 m is analyzed using the seismic records of the Wenchuan Earthquake in 2008.Numerical results show that the air-cushion isolation reduces significantly the hydrodynamic pressure as well as the opening width for the contraction joints of high arch dam.
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| 关 键 词： | 高拱坝 气垫 水库 有限元模型 拉格朗日法 动态耦合 接触模型 动态响应 |
| 收稿时间： | 4 June 2009 |
Research of air-cushion isolation effects on high arch dam reservoir |
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| Authors: | Shao-Jie Zhang Jiang Chen Yuan-Ze Zhang Hao-Wu Liu |
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| Institution: | (1) China Geological Survey, 100037 Beijing, China;(2) Chengdu Center, China Geological Survey, Chengdu, China;(3) Key Laboratory of Neotectonic Movement & Geohazard, Ministry of Land and Resources, 100081 Beijing, China |
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| Abstract: | A three-dimensional (3D) finite element model of air-cushion isolated arch dam is presented with the nonlinear gas-liquid-solid
multi-field dynamic coupling effect taken into account. In this model, the displacement formulation in Lagrange method, pressure
formulation in Euler method, nonlinear contact model based on Coulomb friction law are applied to the air-cushion, reservoir
and contraction joint domain, respectively. The dynamic response of Jinping I arch dam with a height of 305 m is analyzed
using the seismic records of the Wenchuan Earthquake in 2008. Numerical results show that the air-cushion isolation reduces
significantly the hydrodynamic pressure as well as the opening width for the contraction joints of high arch dam. |
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| Keywords: | Air-cushion · Gas-liquid-solid multi-field coupling · Contraction （transverse） joint · Hydrodynamic pressure · Wenchuan Earthquake |
| 本文献已被 CNKI 维普 SpringerLink 等数据库收录！ |
