A piled raft refers to a shallow foundation that is structurally connected to the piles while composite ground refers to a soil pile matrix where the piles are not structurally connected. The design objectives for both a piled raft and composite ground are ...

The site of a warehouse expansion in Tampa, Florida was underlain by sand overlying limestone. The performance criteria required ground improvement to densify the upper sand in order to maintain a maximum total settlement of 25 mm (1 inch) for an applied subgrade ...

Unload-reload cycles induce additional non-uniform internal axial loads within the pile which complicate interpretation of the strain gage data and increase the potential for errors. Attempts to maintain a constant top load during the hold period can lead ...

Accurate representation of the geotechnical resistance distribution is critical in evaluating the performance of piles and pile groups for design. A current practice is to infer the geotechnical resistance distribution based on measured changes in strain during ...

Since its introduction in 1973, the Davisson Offset Limit has been widely used in the United States for interpretation of axial compressive load tests on pile foundations and is one of three methods explicitly accepted by the 2006 International Building Code. ...

Drilled displacement piles are installed by the displacement of soil and subsequent placement of fluid cement grout within the evacuated volume. Depending on the soil grain-size characteristics, soil behavior, in situ soil density, pile spacing, and pile diameter, ...

The design problem of piles is to address not the drag load but the location of the neutral plane and the settlement of the soil at the neutral plane.

<p>Sandy soil layers may undergo compression during liquefaction. Areview of published design manuals, including the 2004AASHTO LRFD Bridge Design Specifications, indicates that some recommendations for pile design may not represent the pile response in a ...

Micropiles are small diameter replacement piles that are capable of developing high axial capacities. Their installation equipment can penetrate hard rock with greater efficiency than tools used for other more conventional foundation types. It is due, in part, ...

Drilled displacement piles (also known as augured cast-in-place displacement piles or augured, pressure-injected displacement piles) are installed by the displacement of soil and subsequent placement of cement grout within the evacuated volume. Depending on ...