石積擁壁の補強工法

Japanese Patent JP7306637

B2

To provide a reinforcement method of a masonry retaining wall with excellent appearance which can rigidly connect a masonry retaining wall to a sloped natural ground while effectively forming a hardened layer of an urethane foam in a gap in back-filling cobble stone.SOLUTION: A head storing recessed portion 12 with a predetermined depth is formed at a predetermined place in wedge stones 4 becoming a masonry retaining wall 2. A drilling rock bolt 20 drills from a bottom portion of the head storing recessed portion 12 to a predetermined depth reaching a sloped natural ground 10. A head portion of the drilling rock bolt 20 is made to remain in a drilled hole 14 so as not to protrude to an outside from the head storing recessed portion 12. After a hardened layer of an urethane foam 34 is formed around the drilled hole 14, a caulking material is filled into the head storing recessed portion 12, and the head portion of the drilling rock bolt 20 is embedded in a caulking portion 44, to be fixed to the masonry retaining wall 2 where the head storing recessed portion 12 is formed.SELECTED DRAWING: Figure 3

Manabu Kaneda
Masato Miyazawa
Shoichi Takeuchi
Yukihiro Ohata

JP2020178644A

July 11, 2023

October 26, 2020

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Nakamura Construction Co., Ltd.
Ever Traction Co., Ltd.
Applied Development Co., Ltd.
ST Engineering Co., Ltd.

E02D29/02; E02D17/20

JP2007070980A
JP2012057328A
JP2003119790A
JP11256572A
JP2007039974A
JP2015001084A
JP2000034839A
JP2020023819A
JP60033925A
JP5222717A
JP3032648U
JP2021042542A

Michio Nakajima
Masahiro Nakashima

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