Research of air-cushion isolation effects on high arch dam reservoir  

作　　者：Shao-Jie Zhang Jiang Chen Yuan-Ze Zhang Hao-Wu Liu 

机构地区：[1]College of Hydraulic ＆ Hydroelectric Engineering,Sichuan University,610065 Chengdu, China [2]Scientific Research Institute of Kunming Investigationand Design Institute,China Hydropower Engineering Consultation Group Company,650033 Kunming, China [3]Institute of Mountain Harzards and Environment,Chinese Academy of Sciences,610041 Chengdu, China

出　　处：《Acta Mechanica Sinica》2011年第5期675-686,共12页力学学报（英文版）

基　　金：supported by the National Natural Science Foun-dation of China (90715026)

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.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.

关 键 词：Air-cushion · Gas-liquid-solid multi-field coupling · Contraction （transverse） joint · Hydrodynamic pressure · Wenchuan Earthquake 

分 类 号：TV642.4[水利工程—水利水电工程] TD528.1[矿业工程—矿山机电]