The design of the Alto Tâmega dam in Portugal. A 106 m high double curvature arch dam

2019 ◽  
pp. 589-597
Author(s):  
F. Hernando ◽  
C. Granell ◽  
C. Baena
Keyword(s):  
Arch Dam ◽  
Double Curvature

Blasting Excavation and Vibration Monitoring Design for Diversion Tunnel

2013 ◽  
Vol 639-640 ◽  
pp. 969-973
Author(s):  
Qi Gao Hu ◽  
Wei Feng Cui ◽  
Jing Wei Gao ◽  
Fei Wei Zhao ◽  
Qian Fu Liang
Keyword(s):  
Optimization Design ◽  
Theoretical Calculations ◽  
Concrete Block ◽  
Arch Dam ◽  
Vibration Monitoring ◽  
Jiangxi Province ◽  
Diversion Tunnel ◽  
Monitoring Design ◽  
Double Curvature ◽  
Blasting Excavation

Because of the local crack and seepage, a double curvature arch dam of concrete block in Jiangxi Province was urgently needed to strengthen, and the construction period was limited seriously. In order to solve the problem of drainage, a diversion tunnel about 24m must get throng in two weeks, and it is proved that the blasting excavation scheme is the only choice. Meanwhile, monitoring measurement must be taken to ensure the dam’s safety. In this article, the optimization design of blasting excavation and a vibration monitoring are completed and carried out respectively. Theoretical calculations and monitoring results showed that, those design schemes are scientific and rational, and disadvantageous effect of blasting vibration is under the control fully.

THE SEISMIC DESIGN STUDY OF A DOUBLE CURVATURE ARCH DAM.

1969 ◽  
Vol 43 (2) ◽  
pp. 217-248 ◽  
Author(s):  
PAA BACK ◽  
DR GAUKROGER ◽  
AC CASSELL ◽  
RT SEVERN ◽  
R DUNGAR
Keyword(s):  
Seismic Design ◽  
Arch Dam ◽  
Design Study ◽  
Double Curvature

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.

scholarly journals Mechanism Research of Arch Dam Abutment Forces during Overload

2015 ◽  
Vol 2015 ◽  
pp. 1-12
Author(s):  
Yu Xia ◽  
Chuangdi Li ◽  
Xiaolian Zhao ◽  
Zhongqing Zhang
Keyword(s):  
Finite Element Method ◽  
Bending Moment ◽  
Arch Dam ◽  
Simple Method ◽  
Double Curvature ◽  
Mechanism Research ◽  
Calculation Results ◽  
Left And Right ◽  
The Operating Mechanism ◽  
Bearing Loads

This paper presents research on the abutment forces of a double-curvature arch dam during overload based on numerical calculation results obtained through finite element method by Ansys. Results show that, with an increase in elevation, the abutment forces and bending moment of the arch dam increase first and then decrease from the bottom to the top of the dam. Abutment forces and bending moment reach their maximum at the middle or middle-down portion of the dam. The distributions of abutment forces and moment do not change during overload. The magnitude of each arch layer’s forces and moment increases linearly during overload. This result indicates that each arch layer transmits bearing loads to the rocks of the left and right banks steadily. This research explains the operating mechanism of an arch dam under normal and overload conditions. It provides a simple method to calculate the distribution of forcesFxandFyand a new method to calculate the overload factor of an arch dam through the estimation of arch layers based on the redistribution characteristic of arch abutment forces.

scholarly journals Budhigandaki Hydroelectric Project is Unlikely to be Implemented as Recommended by Tractebel Engineering

2015 ◽  
Vol 17 ◽  
pp. 3-7
Author(s):  
Hari Man Shrestha
Keyword(s):  
Feasibility Study ◽  
Investment Decision ◽  
Flow Regulation ◽  
Arch Dam ◽  
Irrigation Project ◽  
Hydroelectric Project ◽  
Detail Design ◽  
Double Curvature ◽  
Hydroelectric Projects ◽  
The Government

Tractebel Engineering SA France has recommended 263 m high double curvature arch dam for the Budhigandaki Hydroelectric Project for generation of 1200 MW. The author, based on findings of the Tractebel’s feasibility study itself, gives reasons why the project is unlikely to be implemented as recommended by the consultant. Further, the author raises the question with the government why this project was declared as one of the projects of national pride and was ready for committing to funding beforehand for the preparation of detail design, tender documents and tender drawings in a single package contract along with the feasibility study when the investment decision could only be taken after ascertaining the soundness/ attractiveness of the project on technical, economical, financial and socio-environmental grounds through feasibility and Environmental Impact Assessment (EIA) studies. The author also believes that the project could become more attractive if the downstream benefits from flow regulation in existing irrigation project in India could be accounted for and two potential hydroelectric projects in Nepal at the downstream reaches could be implemented first to derive additional power benefits in these two projects from flow regulation. HYDRO Nepal JournalJournal of Water, Energy and EnvironmentIssue: 17, July 2015 

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