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【答案】应助回帖
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感谢参与，应助指数 +1
woshiwbh(sunshan4379代发): 金币+20 2020-11-16 20:36:32
sunshan4379: LS-EPI+1, 感谢应助! 2020-11-16 20:36:37
Numerical Analysis on Seismic Response of Shiziping Earth-rockfill Dam
作者 ing, XM (Ding, Xuanming)[ 1,2 ] ; Kong, GQ (Kong, Gangqiang)[ 1 ] ; Liu, HL (Liu, Hanlong)[ 1 ] ; Zuo, WL (Zuo, Weilong)[ 3 ]
DISASTER ADVANCES
卷: 6 页: 94-101 特刊: 1
出版年: MAR 2013
文献类型:Article
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摘要
The Shiziping hydropower station locates at the Li county in Sichuan province in China. The distance from the epicenter of Wenchuan earthquake to dam site is only about 55km. It is a zone with high seismic intensity, so the safety of dam during earthquakes is of great importance. Three dimensional dynamic finite element method (FEM) analysis is employed to study the dynamic behaviour of the dam during earthquakes. The initial stress fields of the soil elements are computed by static calculation, in which the nonlinear elastic Duncan-Chang constitutive model has been adopted to simulate soil behavior. In dynamic calculation, the soil is considered to be viscoelastic material and the equivalent linearization dynamic constitutive model is also applied for simulation. The viscous-elastic boundary is set along the model boundaries. The results indicate that the acceleration response is symmetrical along dam axis, which decreases gradually from the center of valley to two banks. The acceleration response on top of dam at the center of valley is the largest. The maximum acceleration responses in X direction under seismic waves A and B are 3.61m/s(2) and 5.64m/s(2), the amplifications of which are 2.47 and 2.11, respectively The dynamic shear stress is increased as the distance from dam face increases. The maximum dynamic shear stress response in overburden is about 400kPa. The minimum dynamic stresses under seismic waves A and B are -1.10 MPa and -1.60 MP a, respectively The dynamic tension stress in grouting gallery is very large, so the local tension crack is possible. The vertical maximum permanent deformation occurs at the top of dam near the middle of riverbed. The maximum vertical permanent deformations under the action of seismic waves A and B are 44.5cm and 60.4cm, respectively. The shear stress varies during the process of earthquake, so the safety factor of dam slope is a function of time. The minimum safety factor of upstream dam slope under seismic wave B is 1.19 and that of downstream dam slope is 1.06. All the safety factors are greater than 1.0, thus the dam slope is steady during earthquake.
关键词
作者关键词:Earth-rockfill Dam; Dynamic Response; Finite Element Method; Acceleration Response; Permanent Deformation
作者信息
通讯作者地址:
Hohai University Hohai Univ, Minist Educ Geomech & Embankment Engn, Key Lab, Nanjing 210098, Jiangsu, Peoples R China.
通讯作者地址: Ding, XM (corresponding author)
显示更多 Hohai Univ, Minist Educ Geomech & Embankment Engn, Key Lab, Nanjing 210098, Jiangsu, Peoples R China.
地址:
显示更多 [ 1 ] Hohai Univ, Minist Educ Geomech & Embankment Engn, Key Lab, Nanjing 210098, Jiangsu, Peoples R China
显示更多 [ 2 ] Hohai Univ, Natl Engn Res Ctr Water Resources Efficient Utili, Nanjing 210098, Jiangsu, Peoples R China
[ 3 ] Water Resources Co Ltd, Jiangsu Surveying & Design Inst, Yangzhou 225009, Peoples R China
电子邮件地址:dxmhhu@163.com
基金资助致谢
基金资助机构显示详情 授权号
Program for Changjiang Scholars & Innovative Research Team in University (PCSIRT)
IRT1125
Ministry of Education, China - 111 Project
B13024
333 project of Jiangsu province of China
BRA2011146
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出版商
DISASTER ADVANCES, SECTOR AG-80, SCHEME NO 54, VIJAY NAGAR, A B RD, INDORE, 452010, INDIA
类别 / 分类
研究方向:Geology; Meteorology & Atmospheric Sciences; Water Resources
Web of Science 类别:Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Water Resources
文献信息
语言:English
入藏号: WOS:000317246200012
ISSN: 0974-262X
eISSN: 2278-4543
其他信息
IDS 号: 121LL
Web of Science 核心合集中的 "引用的参考文献": 17
Web of Science 核心合集中的 "被引频次": 1 |
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