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Improved GNSS/Acoustic Underwater Positioning with Between-Buoy Baseline Constraint
Publisher: ASCE
Abstract: Continuous seafloor transponder positioning with moored buoy observation system is an indispensable method for detecting seafloor crustal deformation. However, the between-buoy baseline information provided by the global ...
Experimental Investigation of Water Flow through Vesicular Fractures in Volcanic Rock
Publisher: ASCE
Abstract: The vesicular structure of volcanic rocks may disrupt the fluid flow in fractures and make the mechanism of fracture flow more complicated. This study evaluated the characteristics of fracture flow associated with vesicular ...
Generalized Analytical Solution for the Consolidation of Unsaturated Soil under Partially Permeable Boundary Conditions
Publisher: American Society of Civil Engineers
Abstract: Previous studies have usually idealized the boundary conditions of unsaturated soil as absolutely permeable or impermeable. However, this assumption is not sound for the majority of cases where the boundary is partially ...
Analytical Solutions to the Axisymmetrical Consolidation of Unsaturated Soils
Publisher: American Society of Civil Engineers
Abstract: In this study, analytical solutions are presented for the axisymmetrical consolidation of an unsaturated soil stratum on the basis of Fredlund and Hasan’s one-dimensional consolidation theory. Two different loading conditions, ...
Selection of Physical and Chemical Properties of Natural Fibers for Predicting Soil Reinforcement
Publisher: American Society of Civil Engineers
Abstract: Natural fibers are environment-friendly and efficient for soil reinforcement. Many studies have reported the influences of fiber percentage on the shear strength of fiber reinforced soil. However, different natural fibers ...
Semianalytical Solution for Dissipation Process of Partially Saturated Soils Considering Nonsmooth Boundary and Stress Level
Publisher: ASCE
Abstract: Partially saturated soils are commonly encountered in practice. To facilitate the construction and maintenance of infrastructure, it is important to estimate the dissipation of partially saturated soils reasonably, especially ...
Temporal Sound Speed Error Correction Model for Underwater Acoustic Positioning Based on In Situ Measurements
Publisher: American Society of Civil Engineers
Abstract: The error source related to sound speed variations in the ocean is the critical factor to limit the underwater ultra-short baseline (USBL) acoustic positioning system. Conventional positioning methods generally employ the ...
Multipoint Traveling Wave Decomposition Method and Its Application in Extended Pile Shaft Integrity Test
Publisher: ASCE
Abstract: Existing nondestructive pile integrity test (PIT) methods have certain limitations in the interpretation of test results for extended pile shafts supporting an existing structure. A novel multipoint traveling wave decomposition ...