Joining structure of pile

Abstract

The present invention, the objective of which is to provide a pile connecting structure of high workability capable of connecting upper pile and lower pile 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 and lower pile to each other, by interposing a connecting plate of about the same diameter as the piles, at the connecting portion between the upper pile and the lower pile, wherein the end plate of either one of the upper pile or lower pile and the connecting plate are fixed by screwing bolts inserted in circular-shaped bolt inserting holes formed in the connecting plate to the bolt hole in the end plate of the pile on one side, and the end plate of the other pile and the connecting plate are fixed, in the state where the head of the bolts screwed to the end plate of the pile on the other side is inserted in the large diameter portion of heteromorphic bolt insertion holes communicating between a large diameter portion which the head of the bolts formed on the connecting plate can pass through and a small diameter portion which the head of the bolts cannot pass through, by making the other pile and the connecting plate move relatively so that the bolts may shift from the large diameter portion of the heteromorphic bolt insertion holes to the small diameter portion.

1 . A pile connecting structure for connecting upper and lower piles to each other, by interposing a connecting plate of approximately the same diameter as the piles at the connecting portion between the upper and lower piles, characterized in that the end plate on either one of the upper or lower piles and the connecting plate are fixed by screwing bolts inserted into circular-shaped bolt insertion holes formed on the connecting plate to the end plate of the pile on one side, and the end plate of the other pile and the connecting plate are fixed in a state where the heads of the bolts screwed to the pile on the other side are inserted into the large diameter portion of heteromorphic bolt insertion holes communicating between the large diameter portion at which the heads of the bolts formed on the connecting plate can pass through and the small diameter portion of which the heads of the bolts cannot pass through, by making the other pile and connecting plate move in a relative fashion so that the bolts may shift from the larger diameter portion of the heteromorphic bolt insertion holes to the smaller diameter portion.  
     
     
         2 . A pile connecting structure as defined in  claim 1 , wherein at the outer circumference of the connecting plate, a cylindrical body is integrally disposed in which the ends of the upper and lower piles may be inserted.  
     
     
         3 . A pile connecting structure as defined in  claim 1 , wherein on the connecting plate is formed an operating port for fastening, from the outer circumferential side of the connecting plate, the bolts shifted from the larger diameter portion of the heteromorphic bolt insertion holes to the smaller diameter portion.  
     
     
         4 . A pile connecting structure as defined in  claim 1 , wherein the connecting plate is formed by being split into a plurality of pieces.  
     
     
         5 . A pile connecting structure as defined in  claim 1 , wherein on the connecting plates of the piles is disposed an auxiliary member having a threaded hole different from that of the connecting plate, so as to allow the pile connecting bolt to be screwed into that auxiliary member.  
     
     
         6 . A pile connecting structure as defined in  claim 1 , wherein projections in the shape of bolts are provided in place of bolts, in a way that they can be fixed to either the end parts of the piles or the auxiliary members.