The purpose of this document is to compare a pipeline's natural frequencies obtained from finite element analysis (FEA) and those derived from the vibration data obtained in the field. The FEA model was developed from inputs such as elevation of…
Channel hydrology, hydraulics, and sediment composition are key variables to calculate vertical and horizontal channel movement. There are a variety of published methods available for estimating channel bed scour that were highlighted in the PRCI…
The focus of this project is on the use of Type-B sleeves to enhance the strain capacity of girth welds. This enhancement option was selected by the project team at the start of the project. In addition, the project team chose to examine this…
Channel hydrology, hydraulics, and sediment composition are key variables to calculating vertical and horizontal channel movement. A variety of methods are available for estimating channel bed scour, bank erosion, and channel migration with fewer…
The goal of the GHZ-2-01 Project is to develop and lab-test a system for monitoring underground pipeline facilities at remote river crossings where access to power and wireline communications is not readily available. A next generation real-time…
Excavation and backfill of in-service pipelines in areas of geohazards could face some unique challenges. The buried pipelines could be subjected to moderate to high levels of longitudinal/axial strains and stresses at the time of excavation. …
Reviews the available sensors for monitoring hazardous ground movement. Our review was limited to airborne and spaceborne sensors for access, performance, and productivity considerations. It was observed that certain ground movement is comparatively…
The project objective was to demonstrate the feasibility of a pipeline right-of-way defense system based on a suite of stationary sensors mounted on, and adjacent to, the pipeline. The sensor data from multiple locations along the pipe are wirelessly…
Describes a finite element analysis program for the static and transient response of linear and nonlinear two and three-dimensional systems with applications in geotechnical engineering. Specifically, it offers transient analysis capabilities for…
In certain situations, frost heave, that settlement, landslides, mining subsidence, lowering, or flooding may cause movement that induces longitudinal stresses in a pipe which may be large enough to warrant intervention to relieve the stress. There…