UPPER WORKING FLOOR AND INTERMEDIATE WORKING FLOOR FOR DEEP FOUNDATION WORK

摘要

PROBLEM TO BE SOLVED: To provide an upper working floor and an intermediate working floor by which a pillar body work of a deep foundation can be safely carried out. ;SOLUTION: An upper working floor for a deep foundation work is provided with a working floor body 21 that is supported by liner plates 7a in the upper position of an upper excavating hole 2a for forming a deep foundations and that has an open part 25 at the central part. The working floor is also provided with a cover for excavation that is detachably mounted on the working floor body 21 so as to close the open part 25 leaving the installation hole for the guide pipe supporting frame for discharging the earth in the lower excavation hole, cover bodies 41, 42 for pillar work that are detachably mounted on the working floor body 21 so as to close the open part 25 leaving the penetrating hole 44 for penetrating the form 43 for forming the pillar body, and a handrail 47 arranged so as to surround the penetrating hole 44.;COPYRIGHT: (C)1998,JPO