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MANUFACTURING METHOD OF ROTARY PENETRATION STEEL PIPE PILE WITH TIP BLADE
To provide a manufacturing method that can reliably and easily manufacture a rotary penetration steel pipe pile with a tip blade with improved fixing strength between a steel pipe pile body and a blade member.SOLUTION: The manufacturing method comprises the steps of: forming two inclined notch grooves 21 and 26 that are symmetrically inclined with respect to a virtual plane D including a central axis C near a tip of a steel pipe pile main body 20; welding and fixing a thick surface of an excavation member 30 to a mounting position F near the tip where a peripheral surface of the steel pipe pile main body 20 and the virtual plane D intersect so that the tip of the excavation member 30 protrudes from a tip opening 20a of the steel pipe pile main body 20; forming two semicircular blade members 40 and 50 having a flat semicircular shape having a diameter 1.5 to 6 times a diameter of the steel pipe pile main body 20; inserting the two semicircular blade members 40 and 50 into the inside of the pipe body in an intersecting manner via the two inclined notch grooves 21 and 26, and welding and fixing a contact portion between the semicircular blade members 40 and 50 and the excavation member 30 and insertion portions 22 and 27 of the notch grooves 21 and 26.SELECTED DRAWING: Figure 3
【課題】鋼管杭本体と翼部材との固定強度を向上させた先端翼付回転貫入鋼管杭を確実かつ簡易に製造可能な製法を提供する。【解決手段】鋼管杭本体２０の先端近傍の中心軸Ｃを含む仮想平面Ｄに対し互いに対称に傾斜する２つの傾斜状切欠き溝２１，２６を形成する工程と、掘削部材３０の先端部が鋼管杭本体２０の先端開口２０ａから突出するように、鋼管杭本体２０の管体内周面と仮想平面Ｄが交差した先端近傍の取付位置Ｆに掘削部材３０の板厚面が溶接固定される工程と、鋼管杭本体３０の直径に対して１．５ないし６倍の直径を有する平面半円形状の２つの半円盤状翼部材４０，５０を形成する工程と、２つの半円盤状翼部材４０，５０を２つの傾斜状切欠き溝２１，２６を介して管体内部に交差状に挿入するとともに半円盤状翼部材４０，５０と掘削部材３０との当接部及び前記切欠き溝２１，２２の挿入部２２，２７とを溶接固定する工程とを含む。【選択図】図３
MANUFACTURING METHOD OF ROTARY PENETRATION STEEL PIPE PILE WITH TIP BLADE
To provide a manufacturing method that can reliably and easily manufacture a rotary penetration steel pipe pile with a tip blade with improved fixing strength between a steel pipe pile body and a blade member.SOLUTION: The manufacturing method comprises the steps of: forming two inclined notch grooves 21 and 26 that are symmetrically inclined with respect to a virtual plane D including a central axis C near a tip of a steel pipe pile main body 20; welding and fixing a thick surface of an excavation member 30 to a mounting position F near the tip where a peripheral surface of the steel pipe pile main body 20 and the virtual plane D intersect so that the tip of the excavation member 30 protrudes from a tip opening 20a of the steel pipe pile main body 20; forming two semicircular blade members 40 and 50 having a flat semicircular shape having a diameter 1.5 to 6 times a diameter of the steel pipe pile main body 20; inserting the two semicircular blade members 40 and 50 into the inside of the pipe body in an intersecting manner via the two inclined notch grooves 21 and 26, and welding and fixing a contact portion between the semicircular blade members 40 and 50 and the excavation member 30 and insertion portions 22 and 27 of the notch grooves 21 and 26.SELECTED DRAWING: Figure 3
【課題】鋼管杭本体と翼部材との固定強度を向上させた先端翼付回転貫入鋼管杭を確実かつ簡易に製造可能な製法を提供する。【解決手段】鋼管杭本体２０の先端近傍の中心軸Ｃを含む仮想平面Ｄに対し互いに対称に傾斜する２つの傾斜状切欠き溝２１，２６を形成する工程と、掘削部材３０の先端部が鋼管杭本体２０の先端開口２０ａから突出するように、鋼管杭本体２０の管体内周面と仮想平面Ｄが交差した先端近傍の取付位置Ｆに掘削部材３０の板厚面が溶接固定される工程と、鋼管杭本体３０の直径に対して１．５ないし６倍の直径を有する平面半円形状の２つの半円盤状翼部材４０，５０を形成する工程と、２つの半円盤状翼部材４０，５０を２つの傾斜状切欠き溝２１，２６を介して管体内部に交差状に挿入するとともに半円盤状翼部材４０，５０と掘削部材３０との当接部及び前記切欠き溝２１，２２の挿入部２２，２７とを溶接固定する工程とを含む。【選択図】図３
MANUFACTURING METHOD OF ROTARY PENETRATION STEEL PIPE PILE WITH TIP BLADE
先端翼付回転貫入鋼管杭の製法
YAMASHITA KOJI (author)
2021-04-22
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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