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RISTechnical Challenges and Design Features of the 247-m DaShiXia Concrete-Faced Sand-Gravel Dam
Publisher: ASCE
Abstract: The 247-m DaShiXia (DSX) concrete-faced sand-gravel dam (CFSGD) is currently the highest structure of its type under construction in the world. By reviewing the specific conditions of this dam and common problems that have ...
Experimental Investigations on the Residual Strain Behavior of a Rockfill Material Subjected to Dynamic Loading
Publisher: American Society of Civil Engineers
Discrete Element Simulations of Shallow Plate-Load Tests
Publisher: American Society of Civil Engineers
Abstract: Shallow plate-load tests were simulated using a two-dimensional discrete element procedure together with parameters calibrated from a series of biaxial compression experiments on aluminum rods. The deformation and force ...
Discrete Element Simulations of Shallow Plate-Load Tests
Publisher: American Society of Civil Engineers
Abstract: Shallow plate-load tests were simulated using a two-dimensional discrete element procedure together with parameters calibrated from a series of biaxial compression experiments on aluminum rods. The deformation and force ...
Modeling Cyclic Behavior of Rockfill Materials in a Framework of Generalized Plasticity
Publisher: American Society of Civil Engineers
Abstract: Typical triaxial compression experiments were revisited to investigate the essential mechanical behavior of rockfill materials to be reflected in constitutive modeling, such as the nonlinear dependence of the strength and ...
Distribution and Variation of Earth Pressure Applied on Submerged Toe-Retaining Walls in Rockfill Dam Engineering
Publisher: ASCE
Abstract: A high concrete gravity retaining wall is usually built at the toe of concrete face rockfill dams to accommodate the toe plinth, to avoid adverse natural conditions or excessive excavation. However, earth pressure on the ...
Failure of Concrete-Face Sand-Gravel Dam Due to Water Flow Overtops
Publisher: American Society of Civil Engineers
Abstract: Based on field investigations and model tests on Gouhou concrete-face sand-gravel dam (CFSGD) breach case, a simplified numerical model for CFSGD breach was developed. The two major highlights of the model are the adoption ...
Large-Scale Triaxial Experiments on the Creep Behavior of a Saturated Rockfill Material
Publisher: American Society of Civil Engineers
Abstract: Large-scale triaxial compression and creep experiments were conducted with a saturated limestone rockfill material. The relationships between dilatancy ratio and stress ratio during loading and creeping were analyzed. It ...
Predicting the Earthquake-Induced Permanent Deformation of Concrete Face Rockfill Dams Using the Strain-Potential Concept in the Finite-Element Method
Publisher: American Society of Civil Engineers
Abstract: Presented in this paper is a modified strain-potential method for the prediction of earthquake-induced permanent deformation of concrete face rockfill dams (CFRDs). The concept of decomposing the total strain of rockfill ...
New Empirical Model for Breaching of Earth-Rock Dams
Publisher: ASCE
Abstract: Empirical models are widely used in dam risk analysis because they can estimate the dam breach parameters easily, which enables a quantitative analysis of the breach process to be conducted. In this study, by applying a ...