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INSERTION METHOD OF COMPRESSED NET-LIKE REINFORCEMENT WITH MOUTH REINFORCEMENT PIPE
To provide a novel root pile component used for an insertion method of a compressed net-like reinforcement.SOLUTION: A downward drilling is performed by a double pipe drilling using an outer pipe 16 with a ring bit 15 and an inner rod 20 with a center bit 19, by a small pitch of 7 times or less a nominal diameter of φ115 mm or φ135 mm in a construction extending direction and by multiple row arrangement in a transverse direction. After the drilling reaches a predetermined depth, the inner rod 20 and the center bit 19 are recovered. A steel rod 23 in which a plurality of hook spacers 22 are disposed is inserted into the outer pipe 16 along an injection hose. A cement grout 27 is filled into the drilled hole from a lower side toward an upper part. A fall preventing nut 25 is mounted on a top of the steel rod. A mouth reinforcement pipe 29 of a general purpose steel pipe which has a diameter of φ76.3 mm to φ101.6 mm and a length of 2 to 3 m and a fall preventing lid at its one end is inserted into the drilled hole. Then, the outer pipe 16 is recovered while pressure-filling the cement grout 27.SELECTED DRAWING: Figure 4
【課題】圧縮型網状鉄筋挿入工法に用いるルートパイルの新しい構成部材を提供する。【解決手段】施工延長方向に呼び径φ１１５ｍｍ、φ１３５ｍｍの７倍以下の小ピッチで、また横断方向にも複列配置となるように、リングビット１５付きアウターパイプ１６とセンタービット１９付きインナーロッド２０による２重管削孔により、下向き削孔を実施し、所定の深さに到達したらインナーロッド２０とセンタービット１９を回収し、複数のフックスペーサ２２を配置した鋼棒２３に注入ホースを添わせてアウターパイプ１６内に挿入し、セメントグラウト２７を前記削孔にその下側から上方に向かって充填し、その各鋼棒の頂部には落下防止ナット２５が設けられ、片端に落下防止蓋のついた直径φ７６．３ｍｍ〜φ１０１．６ｍｍ、長さ２〜３ｍの汎用鋼管の口元補強管２９を鋼棒２３に挿入し、さらに、アウターパイプ１６をセメントグラウト２７を加圧充填しながら回収する。【選択図】図４
INSERTION METHOD OF COMPRESSED NET-LIKE REINFORCEMENT WITH MOUTH REINFORCEMENT PIPE
To provide a novel root pile component used for an insertion method of a compressed net-like reinforcement.SOLUTION: A downward drilling is performed by a double pipe drilling using an outer pipe 16 with a ring bit 15 and an inner rod 20 with a center bit 19, by a small pitch of 7 times or less a nominal diameter of φ115 mm or φ135 mm in a construction extending direction and by multiple row arrangement in a transverse direction. After the drilling reaches a predetermined depth, the inner rod 20 and the center bit 19 are recovered. A steel rod 23 in which a plurality of hook spacers 22 are disposed is inserted into the outer pipe 16 along an injection hose. A cement grout 27 is filled into the drilled hole from a lower side toward an upper part. A fall preventing nut 25 is mounted on a top of the steel rod. A mouth reinforcement pipe 29 of a general purpose steel pipe which has a diameter of φ76.3 mm to φ101.6 mm and a length of 2 to 3 m and a fall preventing lid at its one end is inserted into the drilled hole. Then, the outer pipe 16 is recovered while pressure-filling the cement grout 27.SELECTED DRAWING: Figure 4
【課題】圧縮型網状鉄筋挿入工法に用いるルートパイルの新しい構成部材を提供する。【解決手段】施工延長方向に呼び径φ１１５ｍｍ、φ１３５ｍｍの７倍以下の小ピッチで、また横断方向にも複列配置となるように、リングビット１５付きアウターパイプ１６とセンタービット１９付きインナーロッド２０による２重管削孔により、下向き削孔を実施し、所定の深さに到達したらインナーロッド２０とセンタービット１９を回収し、複数のフックスペーサ２２を配置した鋼棒２３に注入ホースを添わせてアウターパイプ１６内に挿入し、セメントグラウト２７を前記削孔にその下側から上方に向かって充填し、その各鋼棒の頂部には落下防止ナット２５が設けられ、片端に落下防止蓋のついた直径φ７６．３ｍｍ〜φ１０１．６ｍｍ、長さ２〜３ｍの汎用鋼管の口元補強管２９を鋼棒２３に挿入し、さらに、アウターパイプ１６をセメントグラウト２７を加圧充填しながら回収する。【選択図】図４
INSERTION METHOD OF COMPRESSED NET-LIKE REINFORCEMENT WITH MOUTH REINFORCEMENT PIPE
口元補強管付き圧縮型網状鉄筋挿入工法
TANIYAMA SHINGO (author)
2021-11-01
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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