Chapter
Apr 26, 2012
Dynamical Response of Qifeng-Lake Dam during Earthquake
Authors: Xiuzhu Yang [email protected] and Jinshan LeiAuthor Affiliations
Publication: Recent Advancement in Soil Behavior, in Situ Test Methods, Pile Foundations, and Tunneling: Selected Papers from the 2009 GeoHunan International Conference
Abstract
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.
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© 2009 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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ASCE Technical Topics:
- Consolidated soils
- Continuum mechanics
- Dams
- Dynamic response
- Dynamics (solid mechanics)
- Earthfill dams
- Earthquakes
- Embankment dams
- Engineering mechanics
- Geohazards
- Geomechanics
- Geotechnical engineering
- Lateral pressure
- Pore pressure
- Pressure (type)
- Soil dynamics
- Soil mechanics
- Soil pressure
- Soils (by type)
- Solid mechanics
- Water pressure
Authors
Affiliations
Institute of Tunnel and Underground Engineering, Central South University, 22# South Shaoshan Road, Changsha 410075, P R China;. E-mail: [email protected]
Jinshan Lei
Institute of Tunnel and Underground Engineering, Central South University, 22# South Shaoshan Road, Changsha 410075, P R China
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