Concrete temperature control during dam construction (e.g., concrete placement and curing) is important for cracking prevention. In this study, a short-term forecast model mass cooling developed using artificial neural networks (ANN). The development workflow the consists of data integration, preprocessing, construction, application. More than 80 000 monitoring samples are collected by intellig...

An improved form of a recently derived energetic-statistical formula for size effect on the strength of quasibrittle structures failing at crack initiation is presented and exploited to perform stochastic structural analysis without the burden of stochastic nonlinear finite-element simulations. The characteristic length for the statistical term in this formula is deduced by considering the limi...

Cracked concrete arch dam’s behavior due to moderate earthquake magnitude and water pressure variation was investigated. Plain used cast the models with 45 Mpa design strength. A shake table has been planned, manufactured, built create a dynamic testing facility. The experimental work included of four scaled-down dams’ models, which is divided into two groups, each group contains different degr...

Prototype vibration response data of high arch dam discharge structures inevitably mix various noises under the excitation, which adversely affects accuracy working modal identification structure. To effectively filter noise and reduce aliasing for better accuracy, this study proposes an improved threshold method based on wavelet threshold–empirical mode decomposition (EMD) random decrement tec...

Temperature is one of the main loads super-high arch dams. (1) Background: a dam in southwest China was taken as an example this paper and temporal-spatial evolution law temperature analyzed based on monitoring data. (2) Methods: finite element simulation analysis method adopted to invert boundary conditions upstream surface thermal parameters concrete, process long-term operation simulated ana...

Evaluation of the sliding stability concrete dams requires use numerical tools not only able to simulate coupled hydromechanical behavior but also adequately represent foundation discontinuities and specific features dam foundations. The formulation a three-dimensional (3D) small displacement finite element model based on interface elements is presented. In this model, hydraulic simulated assum...