A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
BOTH-END TAPERED PILE, CONNECTED TAPERED PILE, CONSTRUCTION METHOD OF CONNECTION TAPERED PILE AND LIQUEFACTION COUNTERMEASURE STRUCTURE
PROBLEM TO BE SOLVED: To provide a both-end tapered pile and a connected tapered pile each of which dispenses with an on-site welding work and can be formed into shape having a relatively large pile diameter, and can prevent lift of a pile body when liquefaction occurs in an earthquake, and to provided a construction method of the connected tapered pile and liquefaction countermeasure structure.SOLUTION: A connected tapered pile 10 is configured by connecting a plurality of both-end tapered piles 1 in the pile axial direction. A steel pipe pile body 2 of an upper both-end tapered pile 1 adjacent to lower both-end tapered pile 1 in the pile axial direction has a diameter larger than that of the steel pipe pile body 2 of the lower both-end tapered pile 1. An outer diameter portion 4b of a diametrically upwardly enlarged tapered portion 4 of the lower both-end tapered pile 1 is engaged with an inner diameter portion of a diametrically downward reduced tapered portion 3 of the upper both-end tapered pile 1, and thereby both-end tapered piles 1, 1 are connected together. As a result, an on-site welding work becomes unnecessary and the connected tapered pile can be formed into shape having a relatively large shape, and further a lift of a pile body can be prevented when liquefaction occurs in an earthquake.
【課題】現場での溶接作業が不要となるとともに、比較的杭径が大きな形状とすることができ、さらに、地震時に液状化が発生した際も杭体の浮き上がりを防止できる両端テーパー杭、接続テーパー杭、接続テーパー杭の施工方法および液状化対策構造を提供する。【解決手段】両端テーパー杭１を杭軸方向に複数接続することによって接続テーパー杭１０が構成され、杭軸方向に隣り合う上方の両端テーパー杭１の鋼管杭本体２が下方の両端テーパー杭１の鋼管杭本体２より大径となっており、上方の両端テーパー杭１の先細りテーパー部３の内径部３ａに、下方の両端テーパー杭１の先太りテーパー部４の外径部４ｂが係合することによって、両端テーパー杭１，１が接続されているので、現場での溶接作業が不要となるとともに、比較的杭径が大きな形状とすることができ、さらに、地震時に液状化が発生した際も杭体の浮き上がりを防止できる。【選択図】図２
BOTH-END TAPERED PILE, CONNECTED TAPERED PILE, CONSTRUCTION METHOD OF CONNECTION TAPERED PILE AND LIQUEFACTION COUNTERMEASURE STRUCTURE
PROBLEM TO BE SOLVED: To provide a both-end tapered pile and a connected tapered pile each of which dispenses with an on-site welding work and can be formed into shape having a relatively large pile diameter, and can prevent lift of a pile body when liquefaction occurs in an earthquake, and to provided a construction method of the connected tapered pile and liquefaction countermeasure structure.SOLUTION: A connected tapered pile 10 is configured by connecting a plurality of both-end tapered piles 1 in the pile axial direction. A steel pipe pile body 2 of an upper both-end tapered pile 1 adjacent to lower both-end tapered pile 1 in the pile axial direction has a diameter larger than that of the steel pipe pile body 2 of the lower both-end tapered pile 1. An outer diameter portion 4b of a diametrically upwardly enlarged tapered portion 4 of the lower both-end tapered pile 1 is engaged with an inner diameter portion of a diametrically downward reduced tapered portion 3 of the upper both-end tapered pile 1, and thereby both-end tapered piles 1, 1 are connected together. As a result, an on-site welding work becomes unnecessary and the connected tapered pile can be formed into shape having a relatively large shape, and further a lift of a pile body can be prevented when liquefaction occurs in an earthquake.
【課題】現場での溶接作業が不要となるとともに、比較的杭径が大きな形状とすることができ、さらに、地震時に液状化が発生した際も杭体の浮き上がりを防止できる両端テーパー杭、接続テーパー杭、接続テーパー杭の施工方法および液状化対策構造を提供する。【解決手段】両端テーパー杭１を杭軸方向に複数接続することによって接続テーパー杭１０が構成され、杭軸方向に隣り合う上方の両端テーパー杭１の鋼管杭本体２が下方の両端テーパー杭１の鋼管杭本体２より大径となっており、上方の両端テーパー杭１の先細りテーパー部３の内径部３ａに、下方の両端テーパー杭１の先太りテーパー部４の外径部４ｂが係合することによって、両端テーパー杭１，１が接続されているので、現場での溶接作業が不要となるとともに、比較的杭径が大きな形状とすることができ、さらに、地震時に液状化が発生した際も杭体の浮き上がりを防止できる。【選択図】図２
BOTH-END TAPERED PILE, CONNECTED TAPERED PILE, CONSTRUCTION METHOD OF CONNECTION TAPERED PILE AND LIQUEFACTION COUNTERMEASURE STRUCTURE
両端テーパー杭、接続テーパー杭、接続テーパー杭の施工方法および液状化対策構造
ABE YUKIO (author) / MYONAKA SHINJI (author) / ISHIHAMA YOSHIRO (author) / MATSUMIYA HIRONOBU (author)
2015-10-05
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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LIQUEFACTION COUNTERMEASURE FOUNDATION PILE AND LIQUEFACTION COUNTERMEASURE FOUNDATION STRUCTURE
| European Patent Office | 2015