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Showing 1 to 16 of 16 for “"pile shaft"”.
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Seismic Performance of Bridge Column-Pile-Shaft Pin Connections for Application in Accelerated Bridge Construction
… connections may be used to connect columns to pile-shafts to reduce the overall force demand in the integral bridges, leading to smaller and more economical foundations. Additionally, prefabrication of structural elements facilitates accelerated bridge construction (ABC), which could improve …
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The Development of Shaft Friction and End Bearing for Piles in Homogeneous and Layered Soils
… of a 114.0 mm diameter segmental tubular steel pile jacked into loose sand, and loose sand overlying clay. The soil was placed under controlled conditions in a 3.0 m diameter by 3.0 m deep concrete tank.<br/><br/>The variation in local unit shaft friction and radial effective stress was …
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Analysis of consolidation around driven piles in overconsolidated clay
… for understanding and predicting the behavior of piles driven in highly overconsolidated clays (OCR24). The skin friction mobilized during pile loading to failure depends on the sequence of preceding events, i.e. pile installation and soil consolidation. This research utilizes the Strain Path …
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The Effect of Continuous Flight Auger Pile Installation on the Soil-Pile Interface in the Mercia Mudstone Group
… changes that occur to in situ soil at the soil-pile interface for continuous flight auger piles installed in the Mercia Mudstone Group. Four Continuous Flight Auger (CFA) piles were installed in the Gunthorpe Member of the Mercia Mudstone Group, central England. The effect on the soil-pile …
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A Hybrid Approach for Nonlinear Soil-Structure Interaction Analysis of Pile- Supported Bridges
The large-diameter reinforced concrete pile shafts are commonly designed as an economical solution for foundation of highway bridges in soft soils. The substructure method is a widely used technique for seismic SSI analysis of pile-supported bridges due to its remarkable computational efficiency. …
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Piles in Sand and in Sand Overlying Clay
… of single 60mm and 114mm segmented tubular steel piles driven and placed into loose sand and loose sand overlying clay. The soil was placed and instrumented under controlled conditions in a 3.0m diameter by 3.0m deep concrete tank. The 60mm pile was dynamically driven using a pneumatically …
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An axisymmetrical model for a single vertical pile in sand
… on the bearing capacity of a single pile in sand under axisymmetrical loading conditions. An extensive literature review for the existing theories is presented. The published reports showed a wide range of discrepancies exists among previous theories developed to predict bearing …
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Numerical analysis of test pile data from instrumented large diameter bored piles formed in keuper marl (mercia mudstone)
… behaviour of large diameter, bored, cast in-situ piles founded in Keuper marl (Mercia mudstone) is presented. The work is based on instrumented full-scale pile load tests carried out as part of the design of a major Highway communication project in Cardiff, U.K. This research also forms part of an …
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Investigating the performance of continuous helical displacement piles
The Continuous Helical Displacement (CHD) pile is an auger displacement pile developed by Roger Bullivant Ltd in the UK. The CHD pile is installed in-situ through the use of a drilling auger, in a similar fashion to European screw piles and as such, it has performance characteristics of both …
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Centrifuge modelling of high shear capacity ribbed piles in stiff clay
… The idea of the High Shear Capacity Ribbed Pile, whereby the construction of ribs along the length of the pile shaft might significantly increase the shaft capacity, has been considered by contractors in the past. Various tools with which to construct these ribs, using different methods, …
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The development of shaft friction and end bearing resistance for dynamically driven model piles
… study was initially undertaken using a 38 mm pile to check the proposed static and dynamic instrumentation. A sophisticated control programme was then developed for the main tests using an Orion Data Logger interfaced with a Commodore PET micro computer. The static load data was stored on …
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The development of shaft friction in semi-fullscale piles passing through granular soils
… soil displacements around a 0.114m diameter pile passing through a sand stratum.<br/><br/>The available literature on deep foundations is reviewed. It was found that the amount of literature pertaining to pile behaviour in layered soils was limited.<br/><br/>A model pilot study showed that …
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Response of piled buildings to the construction of deep excavations
… mechanisms of soil-structure interaction for piled buildings adjacent to deep excavations to be used in the design and monitoring of deep excavations in urban areas. Most methods to assess building response have originally been developed for tunnelling projects or buildings with shallow …
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Analyses and interpretation of tapered piezoprobe and application to offshore pile design
… to migration of pore water generated around the shaft of the drill rods; and III) long term response that converges to the behavior of a conventional piezocone and is not affected by the presence of the tip extension piece. Parametric studies show that the pore pressure dissipation is affected by …
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Experimentelle Untersuchungen zur Verformungsakkumulation und Tragfähigkeitsreduktion von zyklisch belasteten Pfählen
… In this respect, different types of driven pile foundations, either the monopile or the multi-pile foundation, are frequently envisaged as foundation systems. Depending on the chosen variant the piles transfer the loading in different ways into the subsoil. The monopile bears the lateral …
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Seismic Performance of Column-to-Drilled-Shaft Connections in Reinforced Concrete Bridges
Drilled shaft foundations are often used to support reinforced concrete bridge columns founded in soft soils or in locations where a small footprint is desired. Increasingly, the shaft is being built with a diameter larger than that of the column, to allow tolerance in the column placement and to …