Pre-load jack system and method of driving element into the grou

Details Pre-load jack system and method of driving element into the grou Pre-load jack system and method of driving element into the grou

1979-11-07

1982-01-19

Purser, Ernest R.

Hydraulic and earth engineering

Foundation

Columnar structure

173 1, 173 46, 173 23, 254 29R, E02D 706, E02D 720

Patent

active

043114164

ABSTRACT:
A pile driving rig is used to pre-drill a hole into which an elongate element, such as a pile or a hollow mandrel is inserted. A large portion of the weight of the rig is imposed upon the elongate element by a jack system, one part of which rests upon the pile element and the other part of which jacks up one end of the rig. If further seating of the pile is desired the jacking force is momentarily released so as to drop the superimposed weight of the rig onto the elongate element.

REFERENCES:
patent: 337119 (1886-03-01), Bigelow
patent: 2209660 (1940-07-01), Oka
patent: 2711880 (1955-06-01), McKenzie
patent: 3198263 (1965-08-01), Reischl
patent: 3204534 (1965-09-01), Spannhake
patent: 3696625 (1972-10-01), Alexander
patent: 3734202 (1973-05-01), Gyongyosi
patent: 3846991 (1974-11-01), Wisotsky
patent: 3847230 (1974-11-01), Blomquist

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