Open AccessThree-dimensional linear seismic analysis of normal concrete gravity dam
Author(s) -
Taolin He,
Bin Zhu,
Kui Ren
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/781/2/022081
Subject(s) - gravity dam , foundation (evidence) , response spectrum , structural engineering , displacement (psychology) , geotechnical engineering , superposition principle , response analysis , radiation damping , geology , finite element method , seismic analysis , earthquake shaking table , dynamic stress , seismic wave , engineering , seismology , physics , mathematics , mathematical analysis , psychology , archaeology , particle physics , psychotherapist , history
The three-dimensional linear finite element model is established for the bottom outlet dam section of concrete gravity dam. Mode-superposition response spectrum method and the massless foundation time history method are adopted to analyze the static and dynamic comprehensive stress response and displacement response of the dam under the action of the standard response spectrum of the design earthquake or the corresponding artificial wave under the action of design earthquake and check earthquake. The results show that the dam works well in seismic condition. In addition, the influence of radiation damping of infinite foundation on the dynamic response of the dam section under different seismic waves is analysed. By comparing the dynamic and static comprehensive stress changes of the dam, it shows that after considering the radiation damping effect of the infinite foundation, the dynamic response of the dam body is significantly reduced.