Most of the existing studies on high dams under seismic action use stable ground motions, which cannot simulate non-stationary process practical motions well. Although many scholars have studied special characteristics motion frequency and intensity lately, relatively few systematic been carried out for residual deformation dam projects. In this paper, considering 144 stochastic acceleration ti...

Concrete-face slabs are the primary anti-permeability structures of concrete-face rockfill dam (CFRD), and resistance face slab concrete to permeability is key factor affecting operation safety CFRDs. Herein, influences five fly ash dosages (namely 10%, 20%, 30%, 40% 50%) on property concretes were investigated. Moreover, difference in caused by dosage variations revealed terms pore structure f...

Abstract The concrete face rockfill dam (CFRD) generally encounters structural health problems during long-term operation. Therefore, it is necessary to study the safety evaluation of CFRDs. This paper proposes a comprehensive method for behavior CFRDs on basis regression relationship and fuzzy recognition model. sub-index established by using method. multiplication scale was adopted determine ...

The rockfill structures are widely constructed throughout the world and rockfills are largely used in these structures as main materials or filler materials. In the crust of earth dams, the rockfill materials role is to stabilize the body of the dam, however, the behavior of these materials in Particular their shear strength is not fully understood. In this study, different tests have been cond...

pure rockfill dams have been found specific attention in watershed management and flood control, recently. in addition to hydraulic specific features, one of the important advantages of these structures is their consistency with nature and environment. normally, floods are accompanied with high sediment loads which may enter the body of dam. when flow through dam body governed by hydraulic grad...

The western region of China is rich in hydropower resources and characterized by unique geological conditions. For the construction or planned high dams this region, different types cover layers are formed due to special structures, most which located seismic intensity zones. This study focuses on four site conditions: hard ground, medium–hard medium–soft weak ground. By simulating dynamic resp...