Title:
CONCRETE FLOOR SLAB AND CONCRETE FLOOR SLAB FORMING METHOD
Document Type and Number:
Japanese Patent JP2021063378
Kind Code:
A
Abstract:
To provide a concrete floor slab that can be repaired by removing a precast slab only to the extent of damage and replacing a remaining part with a new precast slab while maintaining prestress.SOLUTION: A plurality of standard parts 31 each consisting of a prescribed number of standard precast slabs 11, and a connecting precast slab 12 or a connecting part 32 made of cast-in-place concrete are alternately provided. A tension material that introduces prestress is arranged in the axial direction of a bridge girder 1 across each standard part and the connecting parts adjacent to both sides thereof. The tension material is obtained by connecting a standard part tension material 21 arranged in the standard parts and a continuous part tension material 22 arranged in the connecting part by a connector 23. Two connecting part tension materials are arranged within the connecting part so that the axial ranges of the bridge girder overlap. A joint part fixing tool 24 capable of fixing a tension force to the standard part is then arranged in the vicinity of a joint part between the standard part and the connecting part.SELECTED DRAWING: Figure 2
Inventors:
FUJIWARA YASUHISA
NISHIMURA KAZUHIRO
NAKATSUMI KENICHI
NAKAMURA MASATAKA
NAKAJIMA DAIKI
NISHIMURA KAZUHIRO
NAKATSUMI KENICHI
NAKAMURA MASATAKA
NAKAJIMA DAIKI
Application Number:
JP2019188547A
Publication Date:
April 22, 2021
Filing Date:
October 15, 2019
Export Citation:
Assignee:
SUMITOMO MITSUI CONSTRUCTION CO LTD
International Classes:
E01D19/12; E01D1/00; E01D22/00
Domestic Patent References:
| JP2017082496A | 2017-05-18 | |||
| JP2018076654A | 2018-05-17 | |||
| JP2019108725A | 2019-07-04 | |||
| JP2003027415A | 2003-01-29 |
Attorney, Agent or Firm:
Kiyoshi Miyakawa
Masahiro Koizumi
Masahiro Koizumi