(19)
(11) EP 1 403 436 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.11.2005 Bulletin 2005/47

(43) Date of publication A2:
31.03.2004 Bulletin 2004/14

(21) Application number: 03250907.7

(22) Date of filing: 14.02.2003
(51) International Patent Classification (IPC)7: E02D 5/24, E02D 5/28, E02D 5/52
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
Designated Extension States:
AL LT LV MK RO

(30) Priority: 06.09.2002 JP 2002261448

(71) Applicants:
  • Nishiwaki, Atsushi
    Chuo-ku, Osaka-shi, Osaka (JP)
  • Geotop Corporation
    Chuo-ku, Osaka (JP)

(72) Inventors:
  • Nishiwaki, Atsushi
    Chuo-Ku Osaka (JP)
  • Yabuuchi, Sadao c/o Geotop Corporation
    Chuo-Ku Osaka (JP)

(74) Representative: Marles, Alan David 
Stevens, Hewlett & Perkins 1 St Augustine's Place
Bristol BS1 4UD
Bristol BS1 4UD (GB)

   


(54) Pile connecting structure


(57) The present invention, the objective of which is to provide a pile connecting structure of high workability capable of connecting upper pile 1 and lower pile 3 to each other simply and accurately, and preventing the pile diameter from becoming a large diameter even at this connecting portion, concerns a pile connecting structure for connecting upper pile 1 and lower pile 3 to each other, by interposing a connecting plate 5 of about the same diameter as the piles, at the connecting portion between the upper pile 1 and the lower pile 3, wherein the end plate 4 of either one 3 of the upper pile 1 or lower pile 3 and the connecting plate 5 are fixed by screwing bolts 6 inserted in circular-shaped bolt inserting holes 51 formed in the connecting plate 5 to the bolt hole 41 in the end plate 4 of the pile 3 on one side, and the end plate 2 of the other pile 1 and the connecting plate 5 are fixed, in the state where the head 71 of the bolts 7 screwed to the end plate 2 of the pile 1 on the other side is inserted in the large diameter portion 52d of heteromorphic bolt insertion holes 52 communicating between a large diameter portion 52d which the head 71 of the bolts 7 formed on the connecting plate can pass through and a small diameter portion 52c which the head 71 of the bolts 7 cannot pass through, by making the other pile 1 and the connecting plate 5 move relatively so that the bolts 7 may shift from the large diameter portion 52d of the heteromorphic bolt insertion holes 52 to the small diameter portion 52c.









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