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Dynamical Response of Qifeng-Lake Dam during Earthquake
Two dimensional dynamical finite element and effective stress method were used to analyze dynamical response of Qifenghu Lake earth-rock dam during earthquake. During analysis, the floodwater level in the upriver is 198.5 meter and 180 meter in the downriver. Peak acceleration of earthquake was 0.275g and it lasted 10s. Calculation results showed that pore water pressure after earthquake was as near twice as that before earthquake. Some region in the central clay wall and the silt groundsill where pore water pressure is equal to lateral consolidation pressure was found. This will endanger the stability of the dam. Through analyzing dynamical response of nodes on the dam surface, we find that absolute peak acceleration and peak displacement of D and E node in the middle of the dam is greater than others.
Dynamical Response of Qifeng-Lake Dam during Earthquake
Two dimensional dynamical finite element and effective stress method were used to analyze dynamical response of Qifenghu Lake earth-rock dam during earthquake. During analysis, the floodwater level in the upriver is 198.5 meter and 180 meter in the downriver. Peak acceleration of earthquake was 0.275g and it lasted 10s. Calculation results showed that pore water pressure after earthquake was as near twice as that before earthquake. Some region in the central clay wall and the silt groundsill where pore water pressure is equal to lateral consolidation pressure was found. This will endanger the stability of the dam. Through analyzing dynamical response of nodes on the dam surface, we find that absolute peak acceleration and peak displacement of D and E node in the middle of the dam is greater than others.
Dynamical Response of Qifeng-Lake Dam during Earthquake
Yang, Xiuzhu (author) / Lei, Jinshan (author)
GeoHunan International Conference 2009 ; 2009 ; Changsha, Hunan, China
2009-07-13
Conference paper
Electronic Resource
English
Dams , Earthquakes , Lakes , Pile foundations , Soil mechanics , China , Models , In situ tests , Dynamic response
Dynamical Response of Qifeng-Lake Dam during Earthquake
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