Title:
PREFABRICATED MANHOLE STRUCTURE AND CONSTRUCTION METHOD FOR THE SAME
Document Type and Number:
Japanese Patent JP2023086190
Kind Code:
A
Abstract:
To provide a new construction method for a prefabricated manhole which fundamentally reviews a conventional prefabricated manhole structure, and reduces the size.SOLUTION: A prefabricated manhole structure is composed of a plurality of concrete segments that are mutually connected. The prefabricated manhole structure includes a section 21 for lifting work having a bottom part 12, a wall part 13 and a top part 14, and a tunnel section 31. The section 21 for the lifting work includes a lid support cylinder part 49 for a hole for lifting. The tunnel section 31 is arranged between right and left sections 21 for lifting work. The height from the bottom part 12 and the top part 14 of the tunnel section 31 is lower than the height of the top part 14 of the section 21 for the lifting work, is lower than the height of the conventional top part 14 of (B), but a distance between the ground surface and the top part 14 of the tunnel section 31 is substantially equal to the conventional distance between the ground surface and the top plate 14 of (B).SELECTED DRAWING: Figure 1
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Inventors:
KAWAMURA HIROSHI
Application Number:
JP2021200541A
Publication Date:
June 22, 2023
Filing Date:
December 10, 2021
Export Citation:
Assignee:
SUMITOMO DENSETSU CORP
TATSUNO KK
FUJIMURA CREST CO LTD
TATSUNO KK
FUJIMURA CREST CO LTD
International Classes:
E02D29/12
Attorney, Agent or Firm:
Takenobu Samejima
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