Title:
TEMPORARY COFFERDAM STRUCTURE
Document Type and Number:
Japanese Patent JP3928225
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To carry out economical execution by simply ensuring the stability of temporary cofferdam works.
SOLUTION: Temporary cofferdam works have a plurality of precast panels 20 being parted along the vertical direction and peripheral direction of a pier and having the same constitution. The panels 20 have skin plates 20a, vertical beams, horizontal beams and vertical ribs 20d. The plates 20a are bent in an arcuate shape, and are formed in a cylindrical shape at the time of connection, and partition the outer circumferential surface of cofferdam works. Ring-shaped timberings 42 have internal ring materials 42a abutted against the outer circumferential surfaces of the pier 12, external ring materials (42b) abutted against the internal surfaces of the vertical beams and a plurality of struts 42c bridged among the internal and external ring materials 42a, (42b). The timberings 42 are parted in the peripheral direction in the same manner as the precast panels 20, and manufactured beforehand as precast products, and assembled annularly after transportation to the field of the execution of works.
Inventors:
Shozo Kato
Ken Tanaka
Moriyama Shin
Ken Tanaka
Moriyama Shin
Application Number:
JP27710497A
Publication Date:
June 13, 2007
Filing Date:
October 09, 1997
Export Citation:
Assignee:
Obayashi Corporation
International Classes:
E02D19/04; (IPC1-7): E02D19/04
Domestic Patent References:
| JP9221760A | ||||
| JP48002852B1 | ||||
| JP63151724A | ||||
| JP49010532A |
Attorney, Agent or Firm:
Masatoshi Matsumoto