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Field Testing of Jet-Grouted Piles and Drilled Shafts.

机译:喷射灌注桩和钻孔井的现场试验。

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A field study of deep foundations supporting high mast lighting and signage was undertaken in typical Florida soils. Three drilled shafts (48 in x12 ft and two 48 in x 18 ft) and two jet-grouted piles (28 in x 18 ft) were constructed in Keystone Heights, and subject to axial as well as combined lateral with torsional loading. In the case of combined loading, a heavy-duty mast arm equivalent to FDOT's E7-T6 type was placed on the top of each foundation and loaded with a crane. In situ as well as laboratory data were collected for the sand, silt, and clay layers to measure properties in order to predict capacities (axial and torsional) based on FDOT and FHWA methods.

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