Elastic Modulus Inversion Analysis of Gravity Dam Based on Multipoint Displacement Monitoring Data

2012 ◽  
pp. 73-79 ◽  
Author(s):  
Bao-Song Xu ◽  
Lan Chen ◽  
Bei-Bei Liu ◽  
Cong-cong Wu
Keyword(s):  
Elastic Modulus ◽  
Monitoring Data ◽  
Gravity Dam ◽  
Displacement Monitoring ◽  
Inversion Analysis

scholarly journals Hydro-Thermo-Mechanical Analysis of an Existing Gravity Dam Undergoing Alkali–Silica Reaction

2019 ◽  
Vol 4 (3) ◽  
pp. 55 ◽  
Author(s):  
Martina Colombo ◽  
Claudia Comi
Keyword(s):  
Damage Model ◽  
Heat Diffusion ◽  
Monitoring Data ◽  
Gravity Dam ◽  
Alkali Silica Reaction ◽  
Concrete Gravity Dam ◽  
Two Phase ◽  
The Real ◽  
Diffusion Analysis ◽  
Temperature And Humidity

The alkali–silica reaction is a chemical phenomenon that, by inducing expansion and the formation of cracks in concrete, can have a severe impact on the safety and functioning of existing concrete dams. Starting from a phenomenological two-phase isotropic damage model describing the degradation of concrete, the effects of alkali-silica reaction in an existing concrete gravity dam are evaluated and compared with real monitoring data. Considering the real temperature and humidity variations, the influence of both temperature and humidity are considered through two uncoupled diffusion analyses: a heat diffusion analysis and a moisture diffusion analysis. The numerical analyses performed with the two-phase damage model allow for prediction of the structural behaviour, both in terms of reaction extent and increase of crest displacements. The crest displacements are compared with the real monitoring data, where reasonably good agreement is obtained.

Structural Assessment of the Mignano Solid-Gravity Dam Based on the Monitoring Data

2012 ◽  
Vol 22 (1) ◽  
pp. 130-138 ◽  
Author(s):  
Francesco Ganelli ◽  
Adrian Beko ◽  
Andrea Mordini
Keyword(s):  
Monitoring Data ◽  
Gravity Dam ◽  
Structural Assessment

Seismic Response Analysis of Reservoir Water-Gravity Dam-Foundation System

2017 ◽  
Vol 737 ◽  
pp. 494-499
Author(s):  
Yu Yang Wang ◽  
Jun Yu Liu ◽  
Bao Kuan Ning ◽  
Ping Zhang
Keyword(s):  
Elastic Modulus ◽  
Seismic Response ◽  
Water Pressure ◽  
Time History ◽  
Gravity Dam ◽  
Response Analysis ◽  
Reservoir Water ◽  
Infinite Element ◽  
Infinite Element Method ◽  
Element Method

The Scaled boundary finite element method and finite-infinite element method are used to model the system of reservoir water – gravity Dam - infinite foundation. The effect of the reservoir water and the infinite foundation on the seismic response of the dam system is analyzed. In the paper, taking the Koyna gravity dam as the research object, the dynamic water pressure on the upstream face of the dam is calculated by SBFEM. The finite-infinite element method is used to model the infinite foundation. Finally, the time history of seismic displacement and the response of the dam under different elastic modulus are evaluated. By comparing the displacement response of the infinite element model of different elastic modulus, the conclusion is drawn that the response of the dam is increased with the increase of the elastic modulus of the foundation. In addition, the calculated results are compared with those of the model with no-mass foundation. It shows that the results of the model considering the radiation damping of the foundation are less than that of the model with no mass foundation.

Sign in / Sign up

Export Citation Format

Share Document