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| Study on dynamic analysis method of large aqueduct structures |
| Revised:December 26, 2004 |
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| DOI：10.7511/jslx20066145 |
| KeyWord:aqueduct structure,pseudo three dimensional,ALE(Arbitrary Lagrangian Eulerian),FSI(Fluid Structure Interaction),earthquake response |
| WU Yi MO Hai-hong YANG Chun |
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| Abstract: |
| Based on characteristics of large aqueduct structures and situations of lacking reasonable analysis method for seismic analysis of large aqueduct structures,pseudo three dimensional dynamic analysis method of high frame supported large aqueduct water coupling system is proposed,the theories of which are based on structural dynamic analysis and fluid structure interaction.Newmark method is employed in integral structural analysis,in which integral performances of load bearing of the aqueduct structure,including the effects of supports,foundation and so on are taken into account;while Arbitrary Lagrangian Eulerian FEM is employed to carry out dynamic analysis on aqueduct-water coupling substructure,in which aqueduct-water coupling effects and large water sloshing effects are considered,the value and distribution of hydrodynamic pressure can be obtained.A high frame supported rectangular aqueduct structure is analyzed by employing pseudo three-dimensional model,which yield much close results compared those using 3D finite element model.Therefore the pseudo three-dimensional dynamic analysis method is proved to be a practical static and dynamic analysis method for dynamic analysis and seismic design of large aqueduct structures with high efficiency. |
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