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 19 of 19 for “"pile cap"”.
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Laterally Loaded Pile Cap Connections
… appropriate connection details between driven piles and pile caps. Prior research on the subject suggests that given a proper embedment length, a specialized reinforced connection may not be necessary. Eliminating these costly connection details could save thousands of dollars on both labor and …
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Idealization of pile to pile-cap connection with respect to lateral loads
… thesis is concerned with study of behavior of pile to pile-cap connection with respect to lateral loads. In this connection prestressed precast concrete piles and reinforced concrete pile caps were given particular attention.
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Dynamic Full-Scale Testing of a Pile Cap with Loose Silty Sand Backfill
Pile caps are used in foundation design to aid multiple single piles to act as a pile group to resist lateral forces that may cause overturning moments. The pile cap and pile group resist these forces by pile-soil-pile interaction, base and side friction along the pile cap-backfill interface, and …
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Dynamic Testing of a Full-Scale Pile Cap with Dense Silty Sand Backfill
… dynamic lateral load tests were performed on a pile cap with a dense silty sand backfill condition. Two hydraulic load actuators connected a test pile cap with a reaction cap. The load actuators incrementally loaded the test cap up to 50 mm of displacement. After each load increment, the …
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The axial behaviour of piled foundations in liquefiable soil
… The axial resistance which can be mobilised by piled foundations in liquefiable soils when subjected to strong shaking remains highly uncertain, and a number of piled foundations have failed in strong earthquakes as recently as 2011 . The lack of visible foundation distress in many such cases …
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Impact of Jet Grouting on the Lateral Strength of Soil Surrounding Driven Pile Foundations
… used to strengthen the soft soil surrounding the piles and the pile cap of two full-scale driven pile foundations. Soilcrete columns, created by jet grouting, were placed underneath the pile cap and surrounding the piles of the first foundation. Two rows of soilcrete columns were placed around the …
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Behavior of Batter Piles in Sand
… of group interaction on behavior of small batter pile groups (3 x 3 and 4 x 4) were examined using the p-multiplier method proposed for the vertical piles. Average values of the p-multipliers appropriate for the small batter pile groups in sand were suggested. Investigations of various …
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System Reliability Analysis of Defected Pile group Foundations
… This thesis studies the behavior of defected pile group foundations installed in sand and calibrates the resistance factor of pile group foundation, utilizing a rational based system reliability analysis. This was achieved by conducting a comprehensive numerical parametric investigation using …
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Investigation of the Resistance of Pile Caps to Lateral Loading
… These foundations consist of groups of piles coupled together by concrete pile caps. These pile caps, which are often massive and deeply buried, would be expected to provide significant resistance to lateral loads. However, practical procedures for computing the resistance of pile caps …
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Finite element analysis of some soil-structure interaction problems
… foundations, building frame and foundation, and cap-pile-foundation interaction. The predictions are compared with closed form and laboratory observations. In the case of pile-cap-foundation analysis, a parametric study is performed to delineate the effects of the relative stiffness of the cap, …
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THE SHEAR BEHAVIOUR OF THE REINFORCED CONCRETE FOUR-PILE CAPS
… BS5400 and BS8110 in the prediction of the shear capacity of 2-way spanning reinforced concrete pile caps from bending theory-based empirical design formulae. This causes designers difficulty to predict an accurate shear capacity of the pile cap. The inherently empirical character of the formulae …
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Seismic Performance of Prestressed Concrete Piles In Cip Reinforced Concrete Pile Caps
<p>The behavior of precast prestressed piles in cast-in-place (CIP) reinforced concrete bent caps subjected to seismic loading is not well understood. Current standard SCDOT connection details require the plain embedment of the pile into the bent cap one pile diameter with a construction tolerance …
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Nondestructive detection of foundation pile embedment depths for high mast light towers
Records of pile lengths are not available for several hundred high mast light towers (HMLTs) throughout Minnesota. The foundation systems, typically steel H-piles or concrete-filled steel pipe piles connected to a triangular concrete pile cap, risk overturning in the event of peak wind loadings if …
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Rehabilitation of timber railroad bridges using glass fiber reinforced polymer composite wraps
… repairing substructure elements including a "Pile cap/pile" joint and an above ground pile with Glass Fiber Reinforced Polymer (GFRP) composite wraps, in combination with phenolic formaldehyde adhesives. Static and dynamic testing was performed to determine the dynamic behavior and the live …
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Vibration from underground railways: considering piled foundations and twin tunnels
… effects of nearby embedded structures such as piled foundations and neighbouring tunnels. Through the formulation of computationally efficient mathematical models, this dissertation examines the dynamic behaviour of these two particular types of structures. The effect of the dynamic behaviour …
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Three-Dimensional Analysis of Geogrid Reinforcement used in a Pile-Supported Embankment
Pile-supported geogrid-reinforced embankments are an exciting new foundation system that is utilized when sites are limited by a soft soil or clay. In this system, an embankment is supported by a bridging layer, consisting of granular fill and one or multiple layers of geogrid reinforcement. The …
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Centrifuge modelling of the impact of mechanised tunnelling on piled foundations using a miniature TBM
… in a growing development of the underground landscape within urban areas. This means that the construction of new tunnels often occurs close to existing piled structures. The majority of tunnelling projects are currently being carried out using tunnel boring machines or TBMs. Understanding the …
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Numerical modeling of a bridge system & its application for performance-based earthquake engineering
… bridge deck collapse due to joint unseating to pile and abutment foundation failure due to lateral spreading. In most of these cases, soil pile-structure interaction (SPSI) has played an important role. SPSI is affected by soil conditions (e.g., competent soil or liquefiable soil) and loading …
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Flood Disaster Resilient Bridge Structures For Sustainable Bridge Management Systems
… bridge girder-deck superstructure, bearings, pile caps and piers. The numerical results of finite element simulation shothat the bridge superstructure displaced 2.42 m under the lateral hydrodynamic force of floodwater. The dowel bars inserted at the bottom of each girder end through bearing …