Title:
円形水路の改修工法
Document Type and Number:
Japanese Patent JP6904542
Kind Code:
B2
Abstract:
To provide a method of renovating a circular water conduit by which, in the renovation of the circular water conduit where defects have occurred, construction can be performed with high construction efficiency and in a short time, the circular water conduit after renovation has the same strength and shape as an existing part so that it can have sufficient strength against long-term use as the circular water conduit.SOLUTION: The method of renovating the circular water conduit comprises: removing an upper part of an existing circular water conduit, where the defects have occurred, over a longitudinal direction so as to have at least a width of a water conduit part to provide a hollow part, installing a cylindrical frame having a circular cross section having a size along a curved surface of the water conduit part on the water conduit part remaining below the hollow part, providing a concrete layer in the hollow part which is to be the upper part of the frame, and then, removing the frame.SELECTED DRAWING: Figure 2
Inventors:
Yoshiaki Yamamoto
Keiki Nishida
Keiki Nishida
Application Number:
JP2018167758A
Publication Date:
July 21, 2021
Filing Date:
September 07, 2018
Export Citation:
Assignee:
Keikon Co., Ltd.
International Classes:
E03F3/06; E03F7/00
Domestic Patent References:
| JP2016044486A | ||||
| JP2001059258A | ||||
| JP2017082530A | ||||
| JP2018096097A | ||||
| JP3228999A | ||||
| JP2012241509A | ||||
| JP63284324A | ||||
| JP2011219960A | ||||
| JP49061918A | ||||
| JP52046614A | ||||
| JP62273309A | ||||
| JP2017166121A | ||||
| JP48065746A | ||||
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Foreign References:
| US4938627 |
Attorney, Agent or Firm:
Masaki Hirota
Seiji Ozawa
Yusaku Tokai
Kazuhiro Matsuda
Yasunori Matsuhashi
Makoto Horiuchi
Masako Yamauchi
Shuichi Sonomoto
Akihiro Yamamura
Hiroyuki Tomita
Seiji Ozawa
Yusaku Tokai
Kazuhiro Matsuda
Yasunori Matsuhashi
Makoto Horiuchi
Masako Yamauchi
Shuichi Sonomoto
Akihiro Yamamura
Hiroyuki Tomita