Results 211 to 220 of about 67,478 (268)

Effect of vertical contraction joints in concrete arch dams

Computers & Structures, 1993
Abstract The vertical joints between the blocks of concrete in arch dams allow for contraction as the concrete cools during construction. Linear analyses, which ignore the presence of these joints, indicate large horizontal tensile stresses near the joints particularly when seismic loading is included. The U.S.
J.R. Mays, L.H. Roehm
openaire   +1 more source

Dynamic monitoring of a concrete arch dam during the first filling of the reservoir

Engineering structures, 2018
The Baixo Sabor dam is a concrete double-curvature arch dam, 123 m high, located in the north-east of Portugal, which is being monitored by a dynamic monitoring system that comprises 20 uniaxial accelerometers.
S. Pereira, F. Magalhães, J. Gomes, Á. Cunha, J. V. Lemos   +4 more
semanticscholar   +1 more source

Modelling autogenous expansion for magnesia concrete in arch dams

Frontiers of Architecture and Civil Engineering in China, 2008
Magnesia Concrete is a kind of expansive concrete used in Chinese hydraulic engineering more and more widely. To evaluate the effects of autogenous expansion on the stresses of arch dams, a simple model of autogenous expansion for Magnesia Concrete in dam engineering is presented.
Feng Jin, Guoxin Zhang, Xiaoqing Luo, Chuhan Zhang   +3 more
openaire   +1 more source

Early-warning model of deformation safety for roller compacted concrete arch dam considering time-varying characteristics

Composite structures, 2018
During its long process of serving time, roller compacted concrete (RCC) arch dam effected by the comprehensive combination of many factors shows a typical time-varying characteristic on its structure and material properties, which is objectively ...
H. Su, Z. Wen, Yan Xiaoqun, Hongping Liu, Yang Meng   +4 more
semanticscholar   +1 more source

Combined prediction model of concrete arch dam displacement based on cluster analysis considering signal residual correction

Mechanical systems and signal processing, 2023
Bo Xu, Zeyuan Chen, Xuan Wang, Jingwu Bu, Zhenhao Zhu, Hu Zhang, Shida Wang, Junyi Lu   +7 more
semanticscholar   +1 more source

Finite Element Simulation Analysis of Concrete Hyperbolic Arch Dam

Applied Mechanics and Materials, 2014
Arch dam is a water retaining structure which has beautiful bodily form and reasonable structure form, in recent years, arch dam has been widely used. This paper adopts finite element method to carry out three-dimensional finite element simulation analysis for Haierwa reservoir concrete hyperbolic arch dam, researching variation law of the dams stress ...
openaire   +1 more source

Multi-point deformation monitoring model of concrete arch dam based on MVMD and 3D-CNN

Applied Mathematical Modelling, 2023
Shaoyang Luo, Bowen Wei, Liangjie Chen
semanticscholar   +1 more source

Optimization of the form of a concrete arch dam

Hydrotechnical Construction, 1990
1. An algorithm was developed for finding the optimal form of concrete arch dams on the basis of using the method of local variations for minimizing the functional of an expanded objective function consisting of the function of the volume of concrete and penalty function taking into account the conditions of the strength of the material and ...
openaire   +1 more source

Real measurement data-driven correlated hysteresis monitoring model for concrete arch dam displacement

Expert systems with applications, 2023
Bo Xu, Zhenhao Zhu, Xiaolong Qiu, Shida Wang, Zeyuan Chen, Hu Zhang, Junyi Lu   +6 more
semanticscholar   +1 more source

Predicting the Influence of Seasonal Thermally Induced Cracking on a Reinforced Concrete Arch Dam

KSCE Journal of Civil Engineering, 2022
J. Enzell, R. Malm, Markus Tollsten
semanticscholar   +1 more source