Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Buried Pipes"”.
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Soil thermal properties and heat loss from buried pipes
… requires a knowledge of the heat loss from buried pipes under diverse conditions. The heat loss can be estimated by various theoretical equations provided the thermal conductivity of the soil (k) and a temperature difference (Äè) between the pipes and the surrounding soil are known. …
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Application and Evaluation of Non-Destructive Testing Methods for Buried Pipes
… assessment methods for both cast iron water pipes and large diameter sewer and culvert systems. A state-of-the-art review of Non-destructive Testing (NDT) technologies available for cast iron water pipes and corrugated steel culverts identified the strengths and weaknesses of each technology. …
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Behaviour of buried pipes adjacent to ground voids under dynamic loading
Protection of buried pipes is a serious issue that concerns countries around the world. Therefore, there is a need for new soil improvement techniques such as geosynthetic materials installation to protect these pipes from damage. This study used large-scale laboratory tests to study the behaviour …
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Reliability-based analysis and maintenance of buried pipes considering the effect of uncertain variables
The failure of the buried pipeline are rare events, and when it occurs, it poses a significant threat to the environment, human lives, and nearby assets. The performance of the buried pipeline is analysed based on the pipe failure modes such as pipe ovality, buckling pressure, and total axial and …
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Cálculo estructural de tuberías enterradas por el método de elementos finitos, con base en el informe técnico CEN/TR 1295-3
… method for the structural calculations of buried pipes as a “common sizing method” in Europe. The constitutive equations used in the model are based on the pipe’s elastic behaviour and the soil’s elastoplastic behaviour, modelling the latter using the five-parameter Drucker-Prager model …
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The seen, the unseen, and the aesthetics of infrastructure
… workings of the built environment; bodies, like pipes, are put to use in an underground that is equally seen/unseen literally as well as figuratively. Domestic laborers on the street, buried pipes, underground. There are visual, sonic, physical, and linguistic relationships between informal …
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Reliability analysis and service life prediction of pipelines
… both the strength and serviceability analysis of pipes. The study in this research focuses on two different types of buried pipes including concrete pipes in sewage systems (concrete sewers) and cast iron water pipes used in water distribution systems. This research firstly investigates how to …
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Multiphysics Simulation and Innovative Characterization of Freezing Soils
… on instrumented pavement sections and in typical buried pipe scenarios. For pavements, both flexible and rigid pavements were simulated. The simulation results were compared with instrumented data on these test pavements. For pipes, cases involving static and dynamic loads were studied, …
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Development of GPR data analysis algorithms for predicting thin asphalt concrete overlay thickness and density
… were validated on GPR signals reflected from buried pipes using finite difference time domain (FDTD) simulation. Second, as a special case of the 2-D GPR imaging and linear inversion reconstruction, regularized deconvolution was applied to GPR signals reflected from thin AC overlays. Four …
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Current Ground Motions Along the Long-Point Fault Derived from Continuous GPS Observations (2012-2014)
… This fault causes recurring damage to roadways, buried pipes, and buildings along the fault trace, resulting in a financial burden for taxpayers. This study employed a high-resolution LiDAR map depicting precise locations of principal fault systems within the greater Houston metropolitan area. …
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Condition assessment of polyethylene pipeline systems
… of in-service naturally aged polyethylene (PE) buried pipes and to define procedures or techniques available to facilitate the condition assessment programme of PE pipelines systems. The primary goal of this study was to establish a better understanding of the ageing process in commercial piping …
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Modelling of linebreak in high-pressure gas pipes
… the heat transfer i. e. one for the case of pipes exposed to the atmosphere and buried pipes have been incorporated with the model. Experimental data from full-scale pipeline tests is used to validate the computer models. Results from the computer model simulations show good agreement with …