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RISImproved Thermal Computations for Artificially Frozen Shaft Excavations
Publisher: American Society of Civil Engineers
Abstract: Artificial ground freezing (AGF) techniques are widely used by civil and mining engineers to assist in the construction of shafts, tunnels, and other structures. The ground is frozen by a coolant circulated through pipes ...
Finite Difference Formulations of Kinematic Equations
Publisher: American Society of Civil Engineers
Abstract: The accuracy of finite-difference solutions to the kinematic equations for runoff modeling is affected when numerical diffusion or instability occurs. The effect of grid ratio and the spatial and temporal weighting ...
Maximum Dynamic-Load Allowance of Bridge with GFRP-Reinforced Concrete Deck
Publisher: American Society of Civil Engineers
Seismic Performance of Precast Reinforced and Prestressed Concrete Walls
Publisher: American Society of Civil Engineers
Abstract: Two geometrically identical half-scale precast concrete cantilever wall units were constructed and tested under quasi-static reversed cyclic lateral loading. One unit was a code compliant conventionally reinforced specimen, ...
Direct Measurements of Vertical-Velocity Power Spectra with the Sousy-VHF-Radar Wind Profiler System
Publisher: American Meteorological Society
Abstract: We present power spectra of vertical velocities measured with the SOUSY-VHF-Radax wind profiler.over a 5-day period in October and November 1981. Most of the data consist of hourly vertical velocity profiles based on 12-rain ...
Finite Element Modeling of Inverted (Inside Out) Soft Contact Lenses
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Soft contact lenses (SCLs) can be inserted inside out with consequences for optical, mechanical, and on-eye comfort performance. Wearing lenses inside out may also cause corneal deformation ...
Frictional Pressure Losses for Annular Flow of Drilling Mud and Mud-Gas Mixtures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The calculation of single-phase and two-phase flowing pressure gradients in a well annulus is generally based on an extension of empirical correlations developed for Newtonian fluids in circular ...
Quantification of Hydrocarbon Contaminants in Meltwater and Sediment in a City Snow Pile
Publisher: American Society of Civil Engineers
Abstract: Snow collected from roadways in northern climates is not pristine and may contain sand or gravel, deicing agents, litter, and airborne pollutants. Although fate and transport of contaminants in snowmelt has been studied ...
Bridge Constructed with GFRP-Reinforced Precast Concrete Deck Panels: Case Study
Publisher: American Society of Civil Engineers
Abstract: Long-term monitoring of two precast deck panels constructed with glass fiber–reinforced polymer (GFRP) bars and six girders of a single-span bridge is reported. Each instrumented panel is 12.5 m long, 2.1 m wide, and 235 ...
Component-Based Modeling and Simulation of Nonlinear Drill-String Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this article, we present a dynamic model for a generic drill-string. The model is developed with the intention for component-based simulation with coupling to external subsystems. The performance of the drill-string is ...