Dan T. Jackson

Foundation Anchor Testing and Performance Evaluation in Varying Soil Environments

Paul Matthews, J. Brian Anderson, James S. Davidson, David B. Roueche et autres

Ground anchors have been used in construction for decades to provide tethering and uplift support to many types of construction and utility operations. New materials and design technology have allowed for a wide range of structures to be deployed in various industries …

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Load Paths in Fabric Membrane Structures Informed by Failure Analysis and Monitoring of an In-Service Structure

David B. Roueche, Justin D. Marshall, John W. Stiles, Dan T. Jackson et autres

Fabric structures have found widespread use due to their light weight, ease of erection, modularity, and flexible footprint sizes. Unfortunately, these structures have been observed to fail prematurely in below-design wind events in several cases, with severe life safety and financial consequences. …

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Integrating Surface-Based Geophysics into Landslide Investigations along Highways

Jack Montgomery, Michael Kiernan, Dan T. Jackson, Brannon W. McDonald

Characterizing active landslides is a significant challenge for geotechnical engineers and geologists, as issues of access, instability, and soft soils can impact the ability of heavy equipment to reach critical locations. Surface-based geophysical methods can be an important tool in these investigations, …

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Geotechnical Effects of 2018 Hurricane Florence

Richard Wooten, J. Brian Anderson, Gokhan Inci, Navid H. Jafari et autres

The Geotechnical Extreme Events Reconnaissance Association (GEER) Florence team of engineers deployed to southeastern North Carolina and northeastern South Carolina following Hurricane Florence with the GEER mission to “collect perishable postdisaster data that can be useful in advancing our understanding of extreme …

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Characterization of a Karst Site using Electrical Resistivity Tomography and Seismic Full Waveform Inversion

Michael Kiernan, Dan T. Jackson, Jack Montgomery, J. Brian Anderson et autres

ABSTRACT Karst geology is characterized by the presence of sinkholes and voids, which may pose significant risk to existing infrastructure. Sinkhole formation is often observed near active quarries, where dewatering operations can alter regional groundwater flow patterns leading to subsidence and increased …

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Use of Geophysical Methods for Sinkhole Exploration

Jack Montgomery, Dan T. Jackson, Michael Kiernan, J. Brian Anderson

Auburn University National Geotechnical Experimentation Site in Piedmont Residuum

J. Brian Anderson, Jack Montgomery, Dan T. Jackson, Michael Kiernan et autres

In 1995, a geotechnical experimentation site was established in rural Lee County, Alabama near the area often referred to as Spring Villa. The Auburn University National Geotechnical Experimentation Site (AUNGES) site is situated near the southern terminus of the Appalachian Piedmont Physiographic …

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Instrumentation and Monitoring of Distress Remediation Strategies at Alabama Highway 5

Dan T. Jackson, Dylan T. Jones, J. Brian Anderson

Alabama Highway 5 is a farm-to-market road built directly on an expansive clay subgrade. Moisture fluctuations cause the soil to shrink and swell, resulting in severe pavement distress. Laboratory testing was performed to characterize the shrink-swell behavior of the subgrade soil. Swell …

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The Use of Lime Columns as a Remediation Technique for Pavements on Expansive Clay Subgrades

Dan T. Jackson, J. Brian Anderson

Insitu Measurement of Pavement Distress and Causal Mechanisms in Expansive Soil along Alabama Highway 5

Dan T. Jackson

CFRP Mooring Lines For Modu Applications

Dan T. Jackson, Barry Shepheard, Elizbar Buba Kebadze, RP Teles et autres

Abstract Precise station keeping is a requirement of mobile offshore drilling units (MODUs) and production vessels operating in ultra-deepwater. DeepSea Engineering and Management in co-operation with Petrobras is undertaking a concept, feasibility development study and scale prototype testing of pultruded Carbon Fibre …

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Deepwater Installation Techniques for Pipe-in-Pipe Systems Incorporating Plastic Strains

Mark A.J. Dixon, Dan T. Jackson, Abed El Chayeb

Abstract This paper presents a numerical and analytical study of pipein- pipe installation in deepwater by the J-lay and Steep S-lay methods. In particular it examines the amount and location on plasticity that may be allowed to occur during the installation phase …