Analysis on Strong Motion Monitoring Data and Dynamic Characteristics of Xinfengjiang Reservoir Dam
Abstract：Xinfengjiang reservoir dam is the first dam which has withstood the test of an earthquake of magnitude 6 in the world.Nowadays earthquakes still occur frequently in the reservoir area.Therefore,it is necessary to carry out a seismic analysis for the purpose to estimate the safety level of the dam.Firstly,the data of dam strong motion array are used to conduct modal analysis.Then combined with modal analysis results,the finite element analysis software,i.e.ANSYS,is used to carry out statical and dynamical analysis of the typical diversion section to explore the deformation and stress distribution rules of the dam.The results show that dam modal frequency is inverse proportion with water level.Under earthquake action,the maximum tensile stress occurs the dam upstream surface's mutation.The phenomenon is consistent to that of the penetrating crack on the retaining dam upstream surfacers mutation.This should cause a certain value.Other parts have a certain safety stock under static and earthquake action.Dynamic time history analysis result is safer than the response spectrum analysis results.
Keywords：Xinfengjiang reservoir damStrong motion monitoringANSYSStatical analysisResponse spectrum analysisDynamic and time-historical analysis
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 34-41 )