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RISRelationship between Porosity and the Constitutive Model Parameters of Rockfill Materials
Publisher: American Society of Civil Engineers
Abstract: In this study, triaxial tests are performed on rockfill material (weakly weathered fresh tuff) with different porosities in order to obtain the stress–strain curves of the test specimens. The confining pressure and porosity ...
Improved Method of Characterizing Fracture Resistance of Asphalt Mixtures Using Modified Paris’ Law: Development of Methodology
Publisher: ASCE
Abstract: It is crucial to accurately determine the coefficients of the modified Paris’ law to accurately characterize the fracture properties of an asphalt mixture. However, the current methods reported in the literature are ...
Turbulent Flow Past an Array of Bluff Bodies Aligned Along the Channel Axis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Computations and measurements of time mean velocities, total fluctuation intensities, and Reynolds stresses are presented for spatially periodic flows past an array of bluff bodies aligned along ...
Improving Performance of Genetic Algorithms for Transportation Systems: Case of Parallel Genetic Algorithms
Publisher: American Society of Civil Engineers
Abstract: Genetic algorithms (GAs) can be the tool of choice especially for optimizing combinatorial and complex problems in transport and infrastructure systems such as traffic signal control, pavement rehabilitation and design, ...
Drainage-Process Analyses for Agricultural Non-Point-Source Pollution from Irrigated Paddy Systems
Publisher: American Society of Civil Engineers
Abstract: The aim of this study was to investigate the effects of drainage processes on non-point-source pollution in a complex irrigation and drainage system. Field experiments were conducted to measure quality and quantity of ...
Shear-Transfer Mechanisms and Strength Modeling of RC Continuous Deep Beams
Publisher: ASCE
Abstract: Based on experimental results including the crack pattern and maximum applied strut stress, as well as on stress states obtained using a nonlinear finite-element analysis, it is identified that the typical critical shear ...
Shear Strength and Mesoscopic Characteristics of Basalt Fiber–Reinforced Loess after Dry–Wet Cycles
Publisher: ASCE
Abstract: Frequent dry–wet cycles induced uneven settlement and slope failure of transportation infrastructures in the Loess Plateau of China. Fiber reinforcement provides a method for solving these problems. In this study, a digital ...
Stability Analysis of Pressurized 3D Tunnel Face with Tensile Strength Cutoff
Publisher: ASCE
Abstract: The aim of this study is to propose an effective approach to evaluate the stability of a shield tunnel face with tensile strength cutoff by using the upper-bound limit analysis method. Based on the discretization and “point ...
Three-Dimensional Active and Passive Seismic Stability Analysis of Shallow Shield Tunnel Faces
Publisher: American Society of Civil Engineers
Abstract: Comprehensive assessment of the active/passive seismic stability of shallow tunnel faces is an urgent and complex task. This work establishes a promising three-dimensional (3D) approach using upper-bound limit analysis to ...
Long-Term Structural Behavior of Concrete Face Rockfill Dams Considering Fluid–Solid Coupling Effects and Spatial Parameter Variability
Publisher: American Society of Civil Engineers
Abstract: A numerical method is proposed to analyze the long-term structural behavior of concrete face rockfill dams (CFRDs), considering fluid–solid coupling and the spatial variability of model parameters. Initially, a method was ...