scholarly journals Advanced Nonlinear Dynamic Analysis of Arch Dams considering Joints Effects

2014 ◽  
Vol 6 ◽  
pp. 587263 ◽  
Author(s):  
Mohammad Amin Hesari ◽  
Mohsen Ghaemian ◽  
Abolfazl Shamsai
Keyword(s):  
Nonlinear Dynamic ◽  
Nonlinear Dynamic Analysis ◽  
Arch Dam ◽  
Dynamical Analysis ◽  
Dam Foundation ◽  
Arch Dams ◽  
Double Curvature ◽  
Reservoir Systems ◽  
Earthquake Performance

Influence of joints behavior on arch dams operation during the earthquakes is investigated. The case study is the Karun-1 double curvature arch dam with the height of 200 meters. The arch dam-foundation-reservoir systems are modeled with and without joints and estimate the effects of contraction and lift joints on stresses and displacements response histories for assessing the earthquake performance. According to nolinear dynamical analysis results, inclusion of the contraction and lift joints considerably influenced the dam response.

scholarly journals Investigation of Nonlinear Behavior of Concrete on Seismic Performance of an Arch Dam Using Finite Element Method

2016 ◽  
Vol 2 (6) ◽  
pp. 295-305
Author(s):  
Mortaza Ali Ghorbani ◽  
Majid Pasbani Khiavi ◽  
Parya Ahmadi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Seismic Performance ◽  
Nonlinear Dynamic Analysis ◽  
Arch Dam ◽  
Nonlinear Behaviour ◽  
Concrete Dam ◽  
Arch Dams ◽  
Element Method

In this paper the effect of nonlinear behaviour of concrete is investigated on seismic performance of a double curvature concrete dam. The Morrow Point concrete dam has been selected as the case study and dam-reservoir-foundation interaction considered in the model. Finite element method has been used for modelling and analysis of case study by applying the El Centro earthquake components considering nonlinear behaviour of concrete. The obtained results of nonlinear dynamic analysis illustrate the increasing of displacement of dam crest along the river and decreasing of maximum principle stresses in critical points. The results demonstrate the importance of consideration of nonlinear behaviour of material in seismic performance of arch dams to achieve the optimal design of models.

Evaluation of Groundwater Leakage into a Drainage Tunnel in Jinping-I Arch Dam Foundation in Southwestern China: A Case Study

2015 ◽  
Vol 49 (3) ◽  
pp. 961-979 ◽  
Author(s):  
Yi-Feng Chen ◽  
Jia-Min Hong ◽  
Hua-Kang Zheng ◽  
Yi Li ◽  
Ran Hu ◽  
...  
Keyword(s):  
Arch Dam ◽  
Southwestern China ◽  
Dam Foundation ◽  
Drainage Tunnel ◽  
Groundwater Leakage

scholarly journals Application of Spatiotemporal Hybrid Model of Deformation in Safety Monitoring of High Arch Dams: A Case Study

2020 ◽  
Vol 17 (1) ◽  
pp. 319 ◽  
Author(s):  
Chongshi Gu ◽  
Xiao Fu ◽  
Chenfei Shao ◽  
Zhongwen Shi ◽  
Huaizhi Su
Keyword(s):  
Hybrid Model ◽  
Data Representation ◽  
Arch Dam ◽  
Deformation Analysis ◽  
Arch Dams ◽  
Dam Operation ◽  
Representation Method ◽  
The Relationship ◽  
Safety And Stability

As an important feature, deformation analysis is of great significance to ensure the safety and stability of arch dam operation. In this paper, Jinping-I arch dam with a height of 305 m, which is the highest dam in the world, is taken as the research object. The deformation data representation method is analyzed, and the processing method of deformation spatiotemporal data is discussed. A deformation hybrid model is established, in which the hydraulic component is calculated by the finite element method, and other components are still calculated by the statistical model method. Since the relationship among the measuring points is not taken into account and the overall situation cannot be fully reflected in the hybrid model, a spatiotemporal hybrid model is proposed. The measured values and coordinates of all the typical points with pendulums of the arch dam are included in one spatiotemporal hybrid model, which is feasible, convenient, and accurate. The model can predict the deformation of any position on the arch dam. This is of great significance for real-time monitoring of deformation and stability of Jinping-I arch dam and ensuring its operation safety.

scholarly journals Performance of Fiber Optical Sensors in the Structure of Concrete Dams to Deal with the Impact Actions (Case Study: Seimare Dam)

2019 ◽  
Vol 15 (1) ◽  
pp. 42-47
Author(s):  
Sarah Bakhtiari ◽  
Mohammad Ali Nekooie
Keyword(s):  
Optical Sensors ◽  
Structural Control ◽  
Optical Fiber Sensor ◽  
Arch Dam ◽  
Double Curvature ◽  
Fiber Optical Sensors ◽  
Structural Responses ◽  
Control Criteria ◽  
The Impact

AbstractDue to the fact that dams are considered one of the strategic infrastructures of a country, it is very important to protect it against destructive acts. Accordingly, sensors were used at various points to record structural responses to the dam. Based on the questionnaires completed by experts, accuracy had the score of 3.8 so it was considered as the most important feature of the sensors and the optical fiber sensor with a mean score of 3.93 was selected as the best sensor type among the available ones. For this project, a questionnaire was prepared based on Likert scale and SPSS method was used in TOPSIS software. Then, Seimare concrete double curvature arch dam was simulated in ABAQUS 2017 software and the proper positioning of the sensors for optimum performance was determined based on Finite Element Method analysis and according to structural control criteria such as tension, displacement, strain, velocity and so one.

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