JP2007056587A - Pile connecting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of parts and to simplify fastening work by the combined use of a fastening means for fastening a connecting body (corresponding to a connecting piece) to both connection parts (corresponding to both end face fittings) to connect both connection parts to each other by the connecting body. <P>SOLUTION: This pile connecting structure comprises the connection parts 3 provided at the mutual facing ends of both divided piles adjacent to each other; the connecting body 10 mounted to the outer peripheries of the connection parts 3 of both divided piles; and the fastening means M fastening the connecting body 10 to both connection parts 3 to connect both connection parts 3 to each other by the connecting body 10. The fastening means M performs mutual connection between inside fastening members arranged at both connection parts 3, and outside fastening members arranged to hold the connecting body 10 between themselves and the inside fastening members. The inside fastening member comprises a locking ring fitted into an annular locking groove 9 formed at the outer peripheries of both connection parts 3 facing each other, and a plurality of internal threads 15 provided at the locking ring 13. The outside fastening member comprises a bolt 14 screwed with each internal thread 15 of the locking ring 13. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a pile embedded in the ground in construction foundation work or the like, and relates to a structure for connecting a plurality of divided piles to each other according to a required length.

In the joint structure of Patent Document 1 below, end face metal fittings are fitted to opposite ends of the upper concrete pile and the lower concrete pile, respectively, and a plurality of connecting pieces are applied to the outer periphery of the end face metal fittings to form an annular shape. A plurality of bolts are inserted from the outside on both the upper and lower sides of each connecting piece and arranged in the circumferential direction. The upper bolts are screwed into the end metal fittings of the upper concrete pile, and the lower bolts are screwed into the end metal fittings of the lower concrete pile.
Japanese Patent No. 2664653

  However, in the joint structure of Patent Document 1, the upper bolts that fix the end face fittings of the upper concrete pile and the connecting pieces, and the lower bolts that fix the end face fittings of the lower concrete pile and the connecting pieces, respectively. Since bolts are required separately, the number of bolts increases, and there is a problem that the tightening work of those bolts becomes troublesome.

  According to the present invention, the number of parts can be reduced by using a fastening means for fastening the connecting body (corresponding to the connecting piece) to both connecting portions (corresponding to the metal fittings on both ends) and connecting the connecting portions to each other by the connecting body. The purpose is to reduce and simplify the tightening work.

The present invention will be described with reference to the drawings of the following embodiments (the first embodiment shown in FIGS. 1 to 3, the second embodiment shown in FIGS. 4 to 6, and the third embodiment shown in FIGS. 7 to 9). .
The connection structure of the pile concerning invention of Claim 1 respond | corresponds to 1st-3rd embodiment, and is comprised as follows.

  In the connection structure of this pile, the connection part 3 provided in the mutually opposing edge part of the both divided piles 1 and 2 mutually adjacent, and the coupling body 10 attached to the outer periphery of the connection part 3 of both the divided piles 1 and 2; The connecting body 10 is fastened to the connecting portions 3 and fastening means M for connecting the connecting portions 3 to each other by the connecting body 10 is provided. The tightening means M includes inner tightening members 13, 16, 18, and 20 disposed between the connecting portions 3, and the connecting body 10 between the inner tightening members 13, 16, 18, and 20. The outer fastening members 14 and 21 arranged so as to be sandwiched are connected to each other.

  In the invention of claim 1, tightening means M (inner tightening members 13, 16, 18, 20 and outer tightening members 14, 21) for coupling the connecting portion 3 of one divided pile 1 and the coupling body 10; Further, the fastening means M (the inner fastening members 13, 16, 18, 20 and the outer fastening members 14, 21) for connecting the connecting portion 3 of the other divided pile 2 and the connecting body 10 are also used. Therefore, the number of parts is reduced and the tightening operation is simplified.

  In the invention of claim 2 (corresponding to the first to third embodiments) based on the invention of claim 1, the inner fastening members 13, 16, 18, 20 and the outer fastening member 14 are used by the fastening means M. , 21 is a female screw member, and the other is a male screw member. In the invention of claim 2, by adopting the male and female screw mechanism, the tightening means M (inner tightening members 13, 16, 18, 20 and outer tightening members 14, 21) can be simplified.

  In the tightening means M according to the invention of claim 3 (corresponding to the first embodiment) based on the invention of claim 1, the inner fastening member of the connecting portion 3 of both split piles 1 and 2 facing each other A locking ring 13 fitted in an annular locking recess 9 formed on the outer periphery and a plurality of female screws 15 provided on the locking ring 13 are provided, and each female screw of the locking ring 13 is provided on the outer fastening member. A male screw member 14 screwed with the screw 15 is provided. In the invention of claim 3, the fastening means M can be simplified.

  In the fastening means M according to the invention of claim 4 (corresponding to the first to third embodiments) based on the invention of claim 1, the inner fastening member has a connection between the connecting portions 3 of both divided piles 1 and 2. The tightening bodies 13, 16, 18 arranged and female screws 15, 17, 18 provided on the tightening bodies 13, 16, 18 are provided. A male screw member 14 screwed into the female screws 15, 17, 18 is provided. In the invention of claim 4, the fastening means M can be simplified.

  In the tightening means M according to the invention of claim 5 (corresponding to the third embodiment) premised on the invention of claim 1, the inner fastening member of the connecting portion 3 of both split piles 1 and 2 facing each other A female screw member 18 fitted in a plurality of locking recesses 19 formed on the outer periphery is provided, and an outer screw member 14 is provided with a male screw member 14 screwed into each female screw member 18. In the invention of claim 5, the tightening means M can be simplified.

  The present invention can reduce the number of parts in the tightening means M and simplify the tightening operation.

First, the connection structure of the pile concerning 1st Embodiment of this invention is demonstrated with reference to FIGS. 1-2 and FIG. 3 (a).
This pile is formed of metal, and connecting portions 3 having the same structure are attached to opposite ends of the cylindrical outer peripheral walls 1a and 2a in both divided piles 1 and 2 adjacent to each other. The connecting portion 3 includes a reinforcing ring 4 fitted to the inner periphery of the end portions of the outer peripheral walls 1a and 2a, and an outer ring portion applied to the end portion and the reinforcing ring 4 from the outside and welded thereto. 5 and an inner ring portion 6 provided on the inner periphery of the outer ring portion 5. A locking groove 7 is formed on the outer periphery of the outer ring portion 5 so as to extend annularly in the entire circumferential direction. A plurality of (six) halved stop holes 8 extending in the radial direction are formed at the end of the outer ring portion 5 and are arranged at equal intervals in the circumferential direction. The inner ring portion 6 is formed with a locking groove 9 (locking recess) that extends annularly in the entire circumferential direction so as to communicate with the locking holes 8. In a state where the connection portions 3 of the two divided piles 1 and 2 are opposed to each other, the retaining holes 8 of the outer ring portions 5 overlap each other, and the locking grooves 9 of the inner ring portions 6 overlap each other. The divided connection bodies 10 divided into a plurality (three) are arranged in an annular shape on the outer periphery of the outer ring part 5 of both connection parts 3. A pair of locking projections 11 fitted in the locking grooves 7 of these outer ring portions 5 are extended in the circumferential direction on the inner side of each divided connecting body 10. A pair of retaining holes 12 are formed in each of the divided connectors 10 so as to be arranged in the circumferential direction. The tightening means M for connecting the connecting portions 3 of the two divided piles 1 and 2 with each divided connecting body 10 will be described in detail.

  The fastening means M includes a locking ring 13 (female screw member that is an inner fastening member) as an annular fastening body that is fitted and positioned in the locking grooves 9 of the inner ring portions 6, A plurality of (six) bolts 14 (male screw members, which are outer fastening members) inserted from the outside into the both stop holes 12 of the divided connecting body 10 and the respective stop holes 8 of both outer ring portions 5 are provided. . A plurality (six) female screws 15 are formed on the locking ring 13 and are arranged at equal intervals in the circumferential direction. When each bolt 14 is screwed and tightened to each female screw 15 of the locking ring 13, the outer ring portion 5 of each connecting portion 3 and each division between the head portion 14 a of the bolt 14 and the locking ring 13. The coupling body 10 is clamped so that the locking grooves 7 of the outer ring portions 5 and the locking projections 11 of the divided coupling bodies 10 are aligned with each other, and the connection portions 3 of the divided piles 1 and 2 are coupled to each other. Is done.

  Moreover, in another example of 1st Embodiment shown in FIG.3 (b), each said stop hole 8 and the annular locking groove 9 are put together in the connection part 3 of both division | segmentation piles 1 and 2, and each A step-shaped locking recess 9 is formed in an annular shape at a position where the stop hole 8 is present. In the state where the connecting portions 3 of the two divided piles 1 and 2 are opposed to each other, the stepped locking concave portions 9 overlap each other. A locking ring 13 is fitted and positioned in the stepped locking recess 9. When each bolt 14 is screwed and tightened to each female screw 15 of this locking ring 13, each divided connector 10 is sandwiched between the head 14 a of each bolt 14 and the locking ring 13.

  In addition, as shown in FIG.3 (c), the volt | bolt 20 is inserted in the latching ring 13, the both outer ring part 5, and each division | segmentation coupling body 10 from the latching groove 9 side of both the inner ring parts 6, and each division | segmentation is carried out. A nut 21 may be screwed onto the bolt 20 outside the connection body 10.

Next, the connection structure of the pile concerning 2nd Embodiment of this invention is demonstrated with reference to FIGS. 4-5 and FIG. 6 (a) centering on difference with 1st Embodiment.
The stop hole 8 in the first embodiment is not formed at the end of the outer ring portion 5. The inner ring portion 6 is not formed with the locking groove 9 in the first embodiment. Between the outer ring part 5 and the inner ring part 6 of both connection parts 3, a clamping ring 16 (female screw member which is an inner clamping member) as an annular clamping body is sandwiched. (Six) female screws 17 are formed and arranged in the circumferential direction at equal intervals. When the bolts 14 are screwed into the female threads 17 of the tightening ring 16 and tightened, the divided coupling bodies 10 are sandwiched between the heads 14a of the bolts 14 and the tightening ring 16, and both outer rings are clamped. The locking groove 7 of the part 5 and the both locking projections 11 of each divided connecting body 10 match each other, and the connecting portions 3 of both divided piles 1 and 2 are connected to each other.

  As shown in FIG. 6B, bolts 20 are inserted into the tightening ring 16 and each divided connecting body 10 from both inner ring portions 6 side, and nuts are attached to the bolts 20 outside each divided connecting body 10. 21 may be screwed together.

Next, the connection structure of the pile concerning 3rd Embodiment of this invention is demonstrated with reference to FIGS. 7-8 and FIG. 9 (a) centering on difference with 1st Embodiment.
Instead of the locking ring 13 having each female screw 15, a plurality (six) of nuts 18 (clamping bodies) are provided as female screw members which are inner fastening members. Instead of the locking groove 9 in the first embodiment, a plurality (six) of locking recesses 19 are formed in the inner ring portion 6 so as to communicate with the locking holes 8 of the outer ring portion 5, and in the circumferential direction. They are arranged at regular intervals. Each nut 18 is fitted and positioned in each locking recess 19. When the bolts 14 are screwed into the nuts 18 and tightened, the outer ring portions 5 of the connection portions 3 and the divided coupling bodies 10 are sandwiched between the heads 14 a of the bolts 14 and the nuts 18. The locking grooves 7 of the both outer ring portions 5 and the locking projections 11 of the divided connecting bodies 10 are aligned with each other, and the connecting portions 3 of the divided piles 1 and 2 are connected to each other.

  As shown in FIG. 9B, bolts 20 are inserted into both outer ring portions 5 and each divided connecting body 10 from the side of the locking groove 9 of both inner ring portions 6, and the outside of each divided connecting body 10. Then, the nut 21 may be screwed onto the bolt 20.

Next, technical ideas other than the claims will be described.
* In the sixth invention based on the invention of any one of claims 1 to 5, the connecting body 10 is a locking formed on the outer periphery of the connecting portion 3 of both split piles 1 and 2. It has a locking projection 11 fitted in the groove 7. In 6th invention, the connection part 3 of both the division | segmentation piles 1 and 2 can be reliably connected by the latching of the latching protrusion 11 with respect to this latching groove 7. FIG.

  * In the seventh invention based on the invention of any one of claims 1 to 5 or the sixth invention, a plurality of the connecting bodies are provided on the outer periphery of the connecting portion 3 of the two divided piles 1 and 2. The divided connecting body 10 is arranged in a ring shape. In 7th invention, each division | segmentation coupling body 10 can be easily arrange | positioned on the outer periphery of the connection part 3 of both division | segmentation piles 1 and 2. FIG.

(A) is a disassembled perspective view which shows the connection structure of the pile concerning 1st Embodiment, (b) is an assembly perspective view similarly. (A) is the longitudinal cross-sectional view of FIG.1 (b), (b) is a cross-sectional view similarly. 2A is a partially enlarged sectional view of FIG. 2A, FIG. 2B is a partially enlarged sectional view showing another example of the first embodiment, and FIG. 2C is another example of the first embodiment. It is a partial expanded sectional view shown. (A) is a disassembled perspective view which shows the connection structure of the pile concerning 2nd Embodiment, (b) is an assembly perspective view similarly. (A) is the longitudinal cross-sectional view of FIG.4 (b), (b) is a cross-sectional view similarly. (A) is a partial expanded sectional view of Drawing 5 (a), and (b) is a partial expanded sectional view showing another example of a 2nd embodiment. (A) is a disassembled perspective view which shows the connection structure of the pile concerning 3rd Embodiment, (b) is an assembly perspective view similarly. (A) is the longitudinal cross-sectional view of FIG.7 (b), (b) is a cross-sectional view similarly. (A) is a partial expanded sectional view of Drawing 8 (a), and (b) is a partial expanded sectional view showing another example of a 3rd embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1, 2 ... Split pile, 3 ... Connection part, 9 ... Locking groove, 10 ... Split coupling body, 13 ... Locking ring, 14 ... Bolt, 15 ... Female screw, 16 ... Fastening ring, 17 ... Female screw, 18 ... Nut, 19 ... locking recess, 20 ... bolt, 21 ... nut, M ... tightening means.

Claims (5)

A connecting part provided at the opposite end of both split piles adjacent to each other, a connecting body attached to the outer periphery of the connecting part of both split piles, and fastening the connecting body to both connecting parts to connect both connecting parts In the pile connection structure including the fastening means connected to each other by a body, the fastening means includes an inner fastening member disposed between the two connecting portions, and the connecting body between the inner fastening member. A pile connection structure characterized in that the outer fastening members arranged so as to be sandwiched between the two are connected to each other. The pile connection structure according to claim 1, wherein one of the inner tightening member and the outer tightening member is a female screw member and the other is a male screw member in the tightening means. . In the tightening means, in the inner tightening member, a locking ring fitted in an annular locking recess formed on the outer periphery of the connecting portion of both divided piles facing each other, and a plurality of female screws provided on the locking ring The pile connection structure according to claim 1, wherein the outer tightening member includes a male screw member screwed into each female screw of the locking ring. In the tightening means, the inner tightening member includes a tightening body disposed between the connecting portions of the two divided piles, and a female screw provided on the tightening body, and the outer tightening member includes the tightening body. The pile connection structure according to claim 1, further comprising a male screw member screwed into the female screw. In the tightening means, the inner tightening member includes a female screw member fitted in a plurality of locking recesses formed on the outer periphery of the connecting portion of both split piles facing each other, and the outer tightening member includes each female screw member. The pile connection structure according to claim 1, further comprising a male screw member screwed onto the pile.

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