JP2012067599A - Construction method for connecting foundation pile, foundation pile set, and key member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily eliminate a state in which any one of split key members is caught in something, when the split key member can not be inserted by getting caught therein.SOLUTION: In a construction method for connecting a columnar body, after outer and inner fitting members 2 and 3 are fitted to each other, a plurality of split key members 15 are inserted between inward and outward peripheral grooves 11 and 8 through an opening 16, so that the outer and inner fitting members can be engaged with each other in the longitudinal direction of the columnar body. The plurality of split key members are prelinked to one another so that an attitude of each of the split key members can be freely changed into such an attitude that it can be inserted between the inward and outward peripheral grooves, and mounted across the inward and outward peripheral grooves in sequence.

Description

  The present invention provides a pair of foundation piles each having an outer fitting member and an inner fitting member distributed to both ends, the outer fitting member of one foundation pile and the inner fitting member of the other foundation pile. After being fitted to each other, in order to engage and connect with each other in the longitudinal direction of the foundation pile, an inward circumferential groove is formed on the inner circumferential side of the outer fitting member, and on the outer circumferential side of the inner fitting member An outer circumferential groove is formed, and the key member is mounted over the inward circumferential groove and the outward circumferential groove in a state where the outer fitting member and the inner fitting member are fitted to each other. And a plurality of split key members in the circumferential direction of the foundation pile, and with the outer fitting member and the inner fitting member fitted to each other, a part of the outward circumferential groove is exposed outward. An opening for bending is formed in the outer fitting member, and the outer fitting member and the inner fitting member are fitted to each other. Each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove by inserting the split key member between the inward circumferential groove and the outward circumferential groove through the opening. A foundation pile connection method for engaging the outer fitting member and the inner fitting member with each other in the longitudinal direction of the foundation pile, and the outer fitting member and the inner fitting member are provided at both ends. A foundation pile having an inward circumferential groove formed on the inner peripheral side of the fitting member and an outer circumferential groove formed on the outer peripheral side of the inner fitting member, and a pair of foundation piles in the longitudinal direction of the foundation pile In order to engage and connect to each other, the inward circumferential groove and the outward circumference in a state where the outer fitting member of one foundation pile and the inner fitting member of the other foundation pile are fitted to each other. A key member that is mounted across the groove, and the key member includes a plurality of divided key portions in the circumferential direction of the foundation pile. The outer fitting member has a part in the longitudinal direction of the outward circumferential groove facing outward in a state where the outer fitting member and the inner fitting member are fitted to each other. An opening is formed, and after the outer fitting member and the inner fitting member are fitted to each other, each of the split key members is passed through the opening to the inward circumferential groove and the outward direction. By inserting it between the circumferential grooves, it can be mounted across the inward circumferential grooves and the outward circumferential grooves, and the outer fitting members and the inner fitting members can be engaged with each other in the longitudinal direction of the foundation pile. It is related with the key member with which the foundation pile set comprised in 1 and the foundation pile set was equipped.

In the connection method of the foundation pile and the foundation pile set, conventionally, in order to connect the pair of foundation piles to each other in the longitudinal direction of the foundation pile, the external fitting member of one foundation pile and the other foundation pile are connected. In a state in which the inner fitting members of the first and second inner fitting members are fitted to each other, each of the divided key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, and subsequently mounted. In a state in which the preceding divided key member that has been mounted in advance by the divided key member is inserted, it can be mounted across the inward circumferential groove and the outward circumferential groove.
In addition, when inserting the preceding divided key member with the subsequent divided key member, the subsequent divided key member is attached and then inserted into the preceding divided key member by bolt connection (see, for example, Patent Document 1). .

Japanese Patent No. 3228691

With the outer fitting member and the inner fitting member fitted to each other, each of the split key members is inserted one by one, and the preceding split key member is inserted by the subsequent split key member, and the inward circumferential groove and the outward circumferential groove If any of the preceding divided key members is caught in the circumferential surface of the inward circumferential groove or the outer circumferential groove and cannot be inserted, the preceding divided key member is opened. There is a possibility that it cannot be pulled back to the side, and other preceding divided key members and subsequent divided key members cannot be mounted at predetermined positions.
In this regard, when the subsequent split key member is inserted after being bolted to the preceding split key member, if the preceding split key member is caught and cannot be inserted, the subsequent split key member is to be removed to eliminate the catch. It is possible to move the preceding divided key member using the key member, but it is necessary to attach each divided key member to the outward circumferential groove part facing outward, and then connect the bolt to the preceding divided key member There is a drawback that the work of attaching the split key member becomes complicated.
The present invention has been made in view of the above circumstances, and any of the divided key members is caught between the inward circumferential grooves and the outer circumferential grooves without complicating the mounting operation of the divided key members. It is intended to make it easier to eliminate the catch when it becomes impossible to insert.

The characteristic configuration of the foundation pile connection method according to the present invention is that a pair of foundation piles each having an outer fitting member and an inner fitting member distributed to both ends are provided, and the outer fitting member of one foundation pile and the other After the inner fitting members of the foundation piles are fitted to each other, inward circumferential grooves are formed on the inner circumference side of the outer fitting members in order to engage and connect with each other in the longitudinal direction of the foundation pile. In addition, an outward circumferential groove is formed on the outer peripheral side of the inner fitting member, and the inward circumferential groove and the outward direction are further fitted in the outer fitting member and the inner fitting member. The key member to be mounted over the circumferential groove is constituted by a plurality of split key members in the circumferential direction of the foundation pile, and the outward direction in a state where the outer fitting member and the inner fitting member are fitted to each other. An opening for allowing a part of the circumferential groove to face outward is formed in the outer fitting member, and the outer fitting member After the inner fitting members are fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, thereby the inward circumferential groove. And a method for connecting foundation piles that are fitted across the outer circumferential groove and the outer fitting member and the inner fitting member are engaged with each other in the longitudinal direction of the foundation pile,
In each of the split key members, the front surface in the insertion direction front side and the rear surface in the insertion direction rear side are formed in an arc shape that curves toward the front side in the insertion direction,
A plurality of the split key members are linked in advance to each other so that each split key member can be inserted between the inward circumferential groove and the outward circumferential groove so that the posture can be freely changed. It is in the point which mounts in order over a circumferential groove and the said outward circumferential groove.

Another characteristic configuration of the connection method of the foundation pile according to the present invention is that the outer fitting member and the inner fitting member are distributed to both ends, and a pair of foundation piles are provided, and the outer fitting member of one foundation pile is provided. In order to engage and connect each other in the longitudinal direction of the foundation pile, an inward circumferential groove is formed on the inner circumference side of the outer fitting member. In addition, an outward circumferential groove is formed on the outer peripheral side of the inner fitting member, and the inward circumferential groove and the inner fitting member are fitted in the outer fitting member and the inner fitting member. The key member to be mounted across the outer circumferential groove is composed of a plurality of split key members in the circumferential direction of the foundation pile, and the outer fitting member and the inner fitting member are fitted to each other, An opening for allowing a part of the outward circumferential groove to face outward is formed in the outer fitting member, and the outer fitting portion And the inner fitting member are fitted to each other, and then each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, thereby It is a connecting method of a foundation pile that is mounted across a groove and the outward circumferential groove, and engages the outer fitting member and the inner fitting member with each other in the longitudinal direction of the foundation pile,
By connecting adjacent divided key members with connecting members that are separate from the divided key members, a plurality of the divided key members are connected to each other by the divided key members. The position is such that the posture can be inserted between the circumferential groove and the circumferential groove so that the posture can be freely changed, and the inward circumferential groove and the outward circumferential groove are sequentially mounted.

Yet another characteristic configuration of the foundation pile connection method according to the present invention is that the outer fitting member and the inner fitting member are distributed to both ends, and a pair of foundation piles are provided, and the outer fitting of one foundation pile is provided. After the member and the inner fitting member of the other foundation pile are fitted to each other, an inward circumferential groove is formed on the inner circumferential side of the outer fitting member in order to engage and connect with each other in the longitudinal direction of the foundation pile. In addition, an outward circumferential groove is formed on the outer peripheral side of the inner fitting member, and the inner circumferential member is further fitted with the outer fitting member and the inner fitting member. While configuring the key member to be mounted across the outward circumferential groove with a plurality of split key members in the foundation pile circumferential direction, in a state in which the outer fitting member and the inner fitting member are fitted to each other, An opening for allowing a part of the outward circumferential groove to face outward is formed in the outer fitting member, After the fitting member and the inner fitting member are fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, thereby It is a connecting method of a foundation pile that is mounted across a facing circumferential groove and the outward circumferential groove, and the outer fitting member and the inner fitting member are engaged with each other in the foundation pile longitudinal direction,
A through hole is formed concentrically in each of the split key members,
A knot that is engageable with an end of the through-hole between the adjacent split keys is provided between the adjacent split keys while inserting the strip into the through-hole, and a plurality of the split key members are attached. The split key members are linked in advance to each other in such a manner that the split key members can be inserted between the inward circumferential grooves and the outward circumferential grooves, and the inward circumferential grooves and the outward circumferential grooves. It is in the point of mounting in order.

Yet another characteristic configuration of the foundation pile connection method according to the present invention is that the outer fitting member and the inner fitting member are distributed to both ends, and a pair of foundation piles are provided, and the outer fitting of one foundation pile is provided. After the member and the inner fitting member of the other foundation pile are fitted to each other, an inward circumferential groove is formed on the inner circumferential side of the outer fitting member in order to engage and connect with each other in the longitudinal direction of the foundation pile. In addition, an outward circumferential groove is formed on the outer peripheral side of the inner fitting member, and the inner circumferential member is further fitted with the outer fitting member and the inner fitting member. While configuring the key member to be mounted across the outward circumferential groove with a plurality of split key members in the foundation pile circumferential direction, in a state in which the outer fitting member and the inner fitting member are fitted to each other, An opening for allowing a part of the outward circumferential groove to face outward is formed in the outer fitting member, After the fitting member and the inner fitting member are fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, thereby It is a connecting method of a foundation pile that is mounted across a facing circumferential groove and the outward circumferential groove, and the outer fitting member and the inner fitting member are engaged with each other in the foundation pile longitudinal direction,
One of an engaging convex portion and an engaging concave portion that can be engaged with each other is integrally formed on the front side in the insertion direction of the split key member, and the engaging convex portion is formed on the rear side in the insertion direction of the split key member. A plurality of the divided key members are formed by integrally forming the other of the engaging portions and the engaging concave portions, and engaging the engaging convex portions with the engaging concave portions to connect the divided key members adjacent to each other. The split key members are preliminarily linked to each other in such a manner that the split key members can be inserted between the inward circumferential grooves and the outward circumferential grooves. It is in the point of mounting in order over the circumferential groove.

[Action and effect]
A plurality of split key members are linked in advance to each other so that each split key member can be inserted between an inward circumferential groove and an outward circumferential groove so that the posture can be freely changed. By inserting between the inward circumferential groove and the outward circumferential groove, the inner circumferential groove and the outward circumferential groove are sequentially mounted.
Therefore, it is possible to install the divided key members one by one in the outward circumferential groove portion facing outward, and then to perform a complicated operation such as bolt connection to the preceding divided key member, that is, the divided key member. If any of the split key members is caught and cannot be inserted without complicating the mounting work of the machine, it is necessary to remove the catch before inserting it between the inward circumferential groove and the outward circumferential groove. Using the split key member, the preceding split key member is moved to easily eliminate the catch.

The characteristic configuration of the foundation pile set according to the present invention is such that the outer fitting member and the inner fitting member are distributed to both ends, and an inward circumferential groove is formed on the inner circumferential side of the outer fitting member. In order to connect a foundation pile having an outward circumferential groove on the outer peripheral side of the inner fitting member and a pair of foundation piles to engage with each other in the longitudinal direction of the foundation pile, In a state in which the fitting member and the inner fitting member of the other foundation pile are fitted to each other, the key member is mounted over the inward circumferential groove and the outward circumferential groove, and the key member is A plurality of split key members are arranged in the circumferential direction of the foundation pile, and the outer circumferential groove is formed by fitting the outer fitting member and the inner fitting member to each other. An opening for allowing a part in the longitudinal direction to face outward is formed, and the outer fitting member and the inner fitting member are connected to each other. And then inserting each of the split key members between the inward circumferential groove and the outward circumferential groove through the opening, thereby the inward circumferential groove and the outward circumferential groove. A foundation pile set configured to be able to engage with each other in the longitudinal direction of the foundation pile with the outer fitting member and the inner fitting member,
The plurality of split key members are preliminarily linked with each other via a linkage mechanism so as to be insertable between the inward circumferential groove and the outward circumferential groove.
In each of the divided key members, the front surface on the front side in the insertion direction and the rear surface on the rear side in the insertion direction are formed in a circular arc shape that curves toward the front side in the insertion direction.

Another characteristic configuration of the foundation pile set according to the present invention is that the outer fitting member and the inner fitting member are distributed to both ends, and an inward circumferential groove is formed on the inner circumferential side of the outer fitting member. In addition, in order to connect a foundation pile having an outward circumferential groove formed on the outer peripheral side of the inner fitting member and a pair of foundation piles to engage with each other in the longitudinal direction of the foundation pile, A key member mounted over the inward circumferential groove and the outward circumferential groove in a state in which the outer fitting member and the inner fitting member of the other foundation pile are fitted to each other; Is composed of a plurality of divided key members in the circumferential direction of the foundation pile, and the outer circumferential groove is formed by fitting the outer fitting member and the inner fitting member to each other in the outer fitting member. An opening for facing a part in the longitudinal direction of the groove to the outside is formed, and the outer fitting member and the inner fitting member After being fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, thereby the inward circumferential groove and the outward circumferential groove. A foundation pile set configured to be able to engage with each other in the longitudinal direction of the foundation pile with the outer fitting member and the inner fitting member,
The plurality of divided key members are connected to each other by connecting the adjacent divided key members with connecting members that are separate from the divided key members. The point is that they are linked in advance so that they can be inserted between them.

Still another characteristic configuration of the foundation pile set according to the present invention is that the outer fitting member and the inner fitting member are distributed to both ends, and an inward circumferential groove is formed on the inner circumferential side of the outer fitting member. In addition, in order to connect a foundation pile having an outward circumferential groove formed on the outer peripheral side of the inner fitting member and a pair of foundation piles to engage with each other in the longitudinal direction of the foundation pile, A key member that is mounted across the inward circumferential groove and the outward circumferential groove in a state where the outer fitting member and the inner fitting member of the other foundation pile are fitted to each other. The member is composed of a plurality of split key members in the circumferential direction of the foundation pile, and the outer fitting member is configured so that the outer fitting member and the inner fitting member are fitted to each other in the outer circumferential direction. An opening for allowing a part of the groove in the longitudinal direction of the groove to face outward is formed, and the outer fitting member and the inner fitting are formed. After the material is fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, so that the inward circumferential groove and the outer circumferential groove are inserted. It is a foundation pile set that is configured to be fitted over the circumferential groove, and the outer fitting member and the inner fitting member can be engaged with each other in the foundation pile longitudinal direction,
A through hole is formed concentrically in each of the split key members, and the plurality of split key members can be inserted between the inward circumferential grooves and the outward circumferential grooves. Inserted through the through-holes and linked to each other in advance,
Between the adjacent split keys, the rope is provided with a knot that can be engaged with the end of the through hole.

Still another characteristic configuration of the foundation pile set according to the present invention is that the outer fitting member and the inner fitting member are distributed to both ends, and an inward circumferential groove is formed on the inner circumferential side of the outer fitting member. In addition, in order to connect a foundation pile having an outward circumferential groove formed on the outer peripheral side of the inner fitting member and a pair of foundation piles to engage with each other in the longitudinal direction of the foundation pile, A key member that is mounted across the inward circumferential groove and the outward circumferential groove in a state where the outer fitting member and the inner fitting member of the other foundation pile are fitted to each other. The member is composed of a plurality of split key members in the circumferential direction of the foundation pile, and the outer fitting member is configured so that the outer fitting member and the inner fitting member are fitted to each other in the outer circumferential direction. An opening for allowing a part of the groove in the longitudinal direction of the groove to face outward is formed, and the outer fitting member and the inner fitting are formed. After the material is fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, so that the inward circumferential groove and the outer circumferential groove are inserted. It is a foundation pile set that is configured to be fitted over the circumferential groove, and the outer fitting member and the inner fitting member can be engaged with each other in the foundation pile longitudinal direction,
One of an engaging convex portion and an engaging concave portion that can be engaged with each other is integrally formed on the front side in the insertion direction of the split key member, and the engaging convex portion is formed on the rear side in the insertion direction of the split key member. Part and the other of the engaging recess are integrally formed,
The plurality of split key members are connected to each other by connecting the adjacent split key members by engaging the engaging convex portion and the engaging concave portion, so that the inward circumferential groove and the outward circumferential groove. In other words, they are linked in advance so that they can be inserted between the two.

[Action and effect]
The plurality of split key members are linked to each other in advance so that they can be inserted between the inward circumferential groove and the outward circumferential groove, so that each of the divided key members faces outward through the opening. Without attaching the split key member without complicating the conventional work, such as attaching the bolt to the preceding split key member after being attached to the outer circumferential groove portion, When any of the split key members is caught between the inward circumferential groove and the outward circumferential groove and cannot be inserted, the plurality of split key members linked in advance are moved to change the posture. , Easy to eliminate the catch.

  The characteristic structure of the key member which concerns on this invention exists in the point which is a key member with which the foundation pile set as described in any one of Claim 5 to 8 was equipped.

[Action and effect]
The split key members that are linked to each other can move either the inward peripheral groove or the outward peripheral groove by moving the posture between the inward peripheral groove and the outward peripheral groove at least up and down. If you can't insert it due to being caught between the two, you can eliminate the condition.

  As used in the present invention, “a plurality of split key members are linked in advance to each other so that each split key member can be inserted between an inward circumferential groove and an outward circumferential groove. And the phrase “the plurality of split key members are linked in advance so that they can be inserted between the inward circumferential groove and the outward circumferential groove” are at least the following a It is meant to include the forms described in -d.

a. A form in which a plurality of divided key members are simply connected by a connecting member such as a connecting tool, or a form in which the divided key members are connected.
b. A plurality of split key members are connected by a connecting member, and among the split key members connected by the connecting member, a split key member located at one end of the split key member row or a split key member located at both ends A form in which the striated bodies are connected to each other, or a form that is connected.
c. A split key member in which a through hole is formed in each of the plurality of split key members, the strip body is inserted through the through holes, and both end portions of the strip body are positioned at both ends of the split key member row A form that is pulled out from or a form that is pulled out.
d. A through-hole is formed in each of the plurality of split key members, and the strip body is inserted through the through-holes, and both end portions of the strip body are pulled out from the split key members at both ends of the split key member row. Then, either one or both ends of the cable body pulled out from the split key member are restricted from a regulating member that prevents the cable body from coming out of the split key member, or from the split key member of the cable body A form in which a regulating member that provides resistance to slipping out is provided, or a form in which a restricting member is provided.

Perspective view of foundation pile set Cross section of the main part Longitudinal section of main pile set Perspective view of main parts Cross section of the main part of the foundation pile set Cross section of the main part Cross-sectional view of main parts showing a second embodiment The principal part cross-sectional view which shows 3rd Embodiment The principal part side view which shows 4th Embodiment The principal part cross-sectional view which shows 5th Embodiment The principal part top view which shows 6th Embodiment (A) Main part longitudinal cross-sectional view showing the seventh embodiment (B) Main part lateral view showing the seventh embodiment (A) Main part longitudinal cross-sectional view which shows 8th Embodiment (B) Main part top view which shows 8th Embodiment

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
FIG. 1 shows a foundation pile set according to the present invention used for a foundation pile connection method according to the present invention. A steel pipe pile A having an outer peripheral surface shape as an example of a foundation pile and a pair of steel pipe piles A are arranged in a longitudinal direction. And a key member 15 to be attached to be engaged with each other in the direction.

  The said steel pipe pile A (A1, A2) distributes the outer fitting member 2 and the inner fitting member 3 which are made of cast steel to the both ends of the steel pipe 1 and welds them concentrically, and the inner fitting member 3 is positioned on the upper side. It can be buried in the ground.

  As shown in FIG. 2, the inner fitting member 3 is formed by extending an inner fitting portion 5 having an outer diameter smaller than that of the base portion 4 to a base portion 4 having an outer diameter substantially the same as the outer diameter of the steel pipe 1. An end surface 6 that is formed in a substantially cylindrical shape and faces the inner fitting portion 5 side of the base portion 4 is formed on an inner fitting side abutting surface that contacts the distal end portion of the outer fitting member 2, and the inner fitting side abutting surface thereof 6, an inner fitting side engaging recess 7 is formed in an annular shape, and two outer circumferential grooves 8 are formed in an annular shape on the outer peripheral side of the inner fitting portion 5. The internal fitting side engaging convex portion 9 is formed in an annular shape.

  As shown in FIG. 2, the outer fitting member 2 is formed in a substantially cylindrical shape having an outer diameter substantially the same as the outer diameter of the steel pipe 1, and an outer fitting for fitting the inner fitting portion 5 on the inner peripheral side thereof. The inner fitting side engaging recess 7 is formed at the tip portion that forms the portion 10, forms two inward circumferential grooves 11 having substantially the same depth as the outward circumferential groove 8, and makes contact with the inner fitting side contact surface 6. The outer fitting side engaging convex portion 12 is formed in an annular shape, and the outer fitting side engaging convex portion 9 is engaged with the outer fitting side contact surface 13 that contacts the tip portion of the inner fitting portion 5. The fitting side engaging recess 14 is formed.

  The inward circumferential groove 11 is formed in an annular shape so as to face the outward circumferential groove 8 in a state where the inner fitting portion 5 is fitted to the outer fitting portion 10, and connects a pair of steel pipe piles A. In order to do this, in the state where the outer fitting member 2 of one steel pipe pile A and the inner fitting member 3 of the other steel pipe pile A are fitted to each other, the inner circumferential groove 11 and the outer circumferential groove 8 are spanned. By attaching the key member 15, the outer fitting member 2 and the inner fitting member 3 can be engaged with each other in the longitudinal direction of the steel pipe pile.

  As shown in FIG. 4, the key member 15 is composed of a plurality of substantially rectangular parallelepiped divided key members in the pile circumferential direction, and the outer fitting member 2 and the inner fitting member 3 are fitted to each other. In order to insert these split key members 15 between the inward circumferential groove 11 and the outward circumferential groove 8, as shown in FIG. 1 and FIG. An opening 16 for allowing a part to face outward over the entire width of the outward circumferential groove 9 was cut out along the formation position of each inward circumferential groove 11 over the entire width of the inward circumferential groove 11. The shape is formed in advance at a plurality of locations (four locations in the present embodiment) in the circumferential direction of the outer fitting member 2.

  Then, as shown in FIG. 3 (a), the inner fitting member 3 of the other steel pipe pile A2 is fitted into the outer fitting member 2 of one steel pipe pile A1, and then fitted together. As shown in FIG. 2, each of the plurality of split key members 15 is exposed outwardly through the opening 16 between the inward circumferential groove 11 and the outward circumferential groove 8 between the adjacent openings 16. The inner circumferential groove 11 and the outer circumferential groove 8a are inserted between the inner circumferential groove 11 and the outer circumferential groove 8 along the outer circumferential groove portion 8a. A pair of steel pipe piles A (A1, A2) can be connected to each other by a connection method in which the outer fitting member 2 and the inner fitting member 3 are engaged with each other in the longitudinal direction of the pile. It is constituted as follows.

  In addition, the code | symbol 17 in FIG. 1 is a screw | thread so that it may engage over the outer fitting member 2 and the inner fitting member 3 in order to suppress the relative rotation of the mutually connected steel pipe pile A (A1, A2). This is a rotation suppression key that has been stopped.

  As shown in FIG. 4, the plurality of split key members 15 to be mounted between the openings 16 adjacent in the pile circumferential direction are formed with through-holes 32 for wire insertion in each split key member 15. A wire 18 as a series of cords is inserted in advance across the split key member 15.

  Of the split key member 15 inserted through the wire 18, the wire 18 has a restricting portion for restricting relative movement with the split key member 15 a in contact with the split key member 15 a on the front end side in the insertion direction. A first restricting member 19a as 19 and a second restricting member 19b as a restricting portion 19 that restricts relative movement between the first restricting member 19a and the divided key member 15b on the rear end side in the insertion direction are provided. The interval between the first restricting member 19a and the second restricting member 19b is set to a length equal to or greater than the total length of each of the divided key members 15, for example, twice as long as each divided key member 15. Is inserted between the inward circumferential groove 11 and the outward circumferential groove 8 so that the posture can be freely changed.

  Therefore, the plurality of split key members 15 can be inserted between the inward circumferential groove 11 and the outward circumferential groove 8 via the wire 18 as the linkage mechanism B and the restricting portion 19, and the inward circumferential circumference. The groove 11 and the outward circumferential groove 8 are linked in advance so as to be able to be pulled back, and the relative movement in the insertion direction between the inward circumferential groove 11 and the outward circumferential groove 8 and the pullback direction The relative movement to each other is linked with each other in advance so as to be controllable.

A method of mounting each of the divided key members 15 over the inward circumferential groove 11 and the outward circumferential groove 8 will be described.
As shown in FIG. 5 (a), the end of the wire 18 is inserted between the inward circumferential groove 11 and the outward circumferential groove 8 from one opening 16 between the adjacent openings 16. Then, as shown in FIG. 5 (b), each split key member 15 inserted through the wire 18 is inserted between the inward circumferential groove 11 and the outer circumferential groove 8. Are inserted in order across the inward circumferential groove 11 and the outward circumferential groove 8, and then the wire 18 is cut and pulled out from each split key member 15 as shown in FIG.

  Next, as shown in FIG. 6, an L-shaped slide key member 20 for preventing the movement of each divided key member 15 in the circumferential groove from the opening 16 to the inward circumferential groove 11 and the outward circumferential groove. 8 and a presser key member 21 between adjacent slide key members 20, and a connecting plate 22 for connecting and fixing the slide key members 20 to each slide key member 20 is screwed.

  According to the foundation pile set of the present embodiment, even if the wire 18 as a rope body is inserted between the inward circumferential groove 11 and the outward circumferential groove 8 from the opening 16, the wire 18 is divided. In order not to interfere with the mounting of the member 15, the split key member 15 is positioned so that the split key member 15 can be inserted between the inward circumferential groove 11 and the outward circumferential groove 8 over a plurality of the split key members 15. The wire 18 is inserted in a freely changeable manner, and the end of the wire 18 is inserted from the opening 16 between the inward circumferential groove 11 and the outward circumferential groove 8 and pulled out from the opening 16. A plurality of the split key members 15 through which the wires 18 are inserted are attached to the outward circumferential groove portion 8a facing outward, and the inward circumferential groove 11 and the outer side along the outward circumferential groove portion 8a. Inserting between the inward circumferential groove 8 and the inward circumferential groove 11 and the outward circumference It can be attached to order over the 8 and.

  Accordingly, it is necessary to perform a complicated operation that has been conventionally performed such that each of the divided key members 15 is attached to the outward circumferential groove portion 8a facing outward and then bolted to the preceding divided key member. In other words, when any of the split key members 15 is caught between the inward peripheral groove 11 and the outward peripheral groove 8 and cannot be inserted without complicating the mounting operation of the split key member 15, In order to eliminate the catch, the wire 18 drawn out from the opening 16 is moved up, down, left and right, so that the play (gap) portion between the split key member 15 and the inward circumferential groove 11 or the outward circumferential groove 8 is provided. It is easy to eliminate the catch of the split key member 15.

  Further, as the wire 18, the wire 18 provided with the restriction portion 19 that restricts the relative movement with the divided key member 15 in contact with the divided key member 15 inserted through the wire 18 is used. By moving the wire 18 in at least one of the front and rear directions, all or part of the split key member 15 inserted through the wire 18 can be actively moved, and the catch of the split key member 15 is further eliminated. Easy to do.

[Second Embodiment]
FIG. 7 shows another implementation of the method of mounting each divided key member 15 across the inward circumferential groove 11 and the outward circumferential groove 8 when connecting the steel pipe piles A using the foundation pile set according to the present invention. After each of the split key members 15 is mounted in order across the inward circumferential groove 11 and the outward circumferential groove 8 and the wire 18 is pulled out from each of the split key members 15, A long slide key member 20 is mounted between the inward circumferential groove 11 and the outward circumferential groove 8 from the opening 16, and a connecting plate 22 for connecting and fixing the slide key members 20 to each slide key member 20. Secure with screws.
Other configurations are the same as those of the first embodiment.

[Third Embodiment]
FIG. 8 shows another embodiment of a plurality of divided key members 15 to be mounted between adjacent openings 16 in the foundation pile set according to the present invention, and the shape of each divided key member 15 is changed in the insertion direction. An inward circumferential groove formed in an annular shape that is narrower toward the front side and is formed in an arc shape in which each of the front surface 23a on the front side and the rear surface 23b on the rear side is curved in the insertion direction front side. 11 and the outward circumferential groove 8 are easily inserted.
Other configurations are the same as those of the first embodiment.

[Fourth Embodiment]
FIG. 9 shows another embodiment of a plurality of split key members 15 to be mounted between adjacent openings 16 in the foundation pile set according to the present invention, and each split key member 15 is formed in a spherical shape. The split key members 15 are connected to each other in advance by a connecting member 24 such as a ring or a chain so that the split key members 15 can be inserted between the inward circumferential grooves 11 and the outward circumferential grooves 8 in a posture changeable manner. The relative movement in the insertion direction and the relative movement in the pull-back direction between the inward circumferential groove 11 and the outward circumferential groove 8 are connected to each other in advance so as to be able to be regulated.

  Of these split key members 15, the split key member 15 a that is mounted first across the inward circumferential groove 11 and the outward circumferential groove 8, that is, pulled by the split key member 15 a on the front end side in the insertion direction. By connecting the wire 25 as a cable body, a plurality of split key members 15 can be inserted between the inward circumferential groove 11 and the outward circumferential groove 8, and the inward circumferential groove 11 and the outside They are linked to each other in advance via a connecting member 24 as a linkage mechanism B and a wire 25 so that they can be pulled back from between the circumferential grooves 8.

Then, after the wire 25 is inserted between the inward circumferential groove 11 and the outward circumferential groove 8 from one opening 16 and pulled out from the other opening 16, a plurality of wires 25 are connected to each other while being pulled. The split key member 15 can be mounted in order across the inward circumferential groove 11 and the outward circumferential groove 8.
In this case, the opening 16 can be formed into a circular shape that can be easily processed.
Other configurations are the same as those of the first embodiment.

  According to the foundation pile set of the present embodiment, the posture of the plurality of split key members 15 can be freely changed to a posture in which each split key member 15 can be inserted between the inward circumferential groove 11 and the outward circumferential groove 8. The divided key members 15 are connected to each other in advance, and are attached to the outward circumferential groove portion 8a facing outward, and along the outward circumferential groove portion 8a, the inward circumferential groove 11 and the outside By being inserted between the facing circumferential groove 8, it can be mounted in order across the inward circumferential groove 11 and the outward circumferential groove 8.

  Accordingly, it is necessary to perform a complicated operation that has been conventionally performed such that each of the divided key members 15 is attached to the outward circumferential groove portion 8a facing outward and then bolted to the preceding divided key member. In other words, when any of the split key members 15 is caught between the inward peripheral groove 11 and the outward peripheral groove 8 and cannot be inserted without complicating the mounting operation of the split key member 15, In order to eliminate the catch, the split key member 15 and the inward peripheral groove 11 are moved between the inward peripheral groove 11 and the outward peripheral groove 8 by moving the split key member 15 and the wire 25 before insertion vertically and horizontally. Alternatively, it is easy to eliminate the catching of the split key member 15 at the play (gap) portion between the outward circumferential grooves 8.

  Of the plurality of split key members 15 connected to each other, the pulling wire 25 is connected to the split key member 15 that is mounted first across the inward circumferential groove 11 and the outward circumferential groove 8. A plurality of split key members that are connected to each other after the pulling wire 25 is inserted from the opening 16 between the inward circumferential groove 11 and the outward circumferential groove 8 and pulled out from the opening 16. 15 can be mounted in order across the inward circumferential groove 11 and the outward circumferential groove 8, and by pulling the plurality of split key members 15 in the insertion direction with the pulling wires 25, the insertion direction does not shift. Can be mounted in order while being guided between the inward circumferential groove 11 and the outward circumferential groove 8.

[Fifth Embodiment]
FIG. 10 shows another embodiment of a plurality of split key members 15 to be mounted between adjacent openings 16 in the foundation pile set according to the present invention, and each split key member 15 is formed in a spherical shape. The split key member 15 is formed with a truncated cone-shaped recess 26 and a through hole 27 that opens at the bottom of the recess 26 in a concentric shape, and in the through hole 27 of each split key member 15. The knot 29 formed by tightly tying the wire 28 is inserted into the concave portion 26 and engaged with the split key member 15 while the wire 28 is inserted, so that the split key members 15 are connected to each other inwardly. The relative movement in the insertion direction and the relative movement in the pullback direction between the circumferential groove 11 and the outward circumferential groove 8 are connected to each other in advance so as to be able to be regulated.

The wire portion 28a on the front end side in the insertion direction is extended from the split key member 15a, and a plurality of split key members 15 can be inserted between the inward circumferential groove 11 and the outward circumferential groove 8, and These are linked in advance through a wire 28 and a knot 29 as the linkage mechanism B so that they can be pulled back from between the inward circumferential groove 11 and the outward circumferential groove 8.
In this case, the opening 16 can be formed into a circular shape that can be easily processed.
Other configurations are the same as those of the first embodiment.

[Sixth Embodiment]
FIG. 11 shows another embodiment of a plurality of split key members 15 to be mounted between the adjacent openings 16 in the foundation pile set according to the present invention. Engaging convex portions 31 are formed, and the divided key members 15 are engaged with the engaging concave portions 30 by engaging the engaging convex portions 31 with each other. It is connected to each other in advance so that the posture can be inserted between the groove 8 and the groove 8 so that the posture can be freely changed. The movement is connected to each other in advance so that the movement can be regulated.

A plurality of split key members 15 can be inserted between the inward circumferential groove 11 and the outward circumferential groove 8, and can be pulled back from between the inward circumferential groove 11 and the outward circumferential groove 8. As the linkage mechanism B, the engagement recess 30, the engagement protrusion 31 that engages with the engagement recess 30, and the wire 25 are linked in advance.
Other configurations are the same as those of the first embodiment.

[Seventh Embodiment]
FIG. 12 shows another embodiment of the rotation restraining key 17 to be mounted to restrain the relative rotation of the steel pipe piles A (A1, A2) connected to each other in the foundation pile set according to the present invention. In the state where the inner fitting member 3 and the outer fitting member 2 are fitted to the inner fitting side contact surface 6 in 3 and the front end surface 33 of the outer fitting member 2 to be brought into contact with the inner fitting side contact surface 6, respectively. A plurality of pin holes 34a and 34b that are concentrically opposed to each other, and a rotation suppression pin 17 as a rotation suppression key is attached to each of the pin holes 34a and 34b and connected to each other. (A1, A2) The relative rotation between the two is prevented.
Other configurations are the same as those of the first embodiment.

[Eighth Embodiment]
FIG. 13 shows another embodiment of the rotation inhibition key 17 to be mounted to inhibit the relative rotation of the steel pipe piles A (A1, A2) connected to each other in the foundation pile set according to the present invention. The inner fitting member 3 and the outer fitting member 2 are fitted so that the inner fitting side contact surface 6 in 3 and the front end surface 33 in the outer fitting member 2 are in contact with each other, and the base portion of the inner fitting member 3 4 and the outer fitting member 2 are screwed to a substantially rectangular rotation inhibiting key 17.

The rotation suppression key 17 has two inner fitting member side insertion holes 35b for inserting an inner fitting member side screw 35a to be screwed to the base portion 4 of the inner fitting member 3, and an outer portion to be screwed to the outer fitting member 2. Two outer fitting member side insertion holes 36b for inserting the fitting member side screws 36a are formed, and as shown in FIG. 13B, the inner fitting member side insertion holes 35b extend along the pile circumferential direction. The outer fitting member side insertion hole 36b is formed with a relatively large inner diameter that forms a gap with the outer peripheral side of the outer fitting member side screw 36a.
Other configurations are the same as those of the first embodiment.

[Other Embodiments]
1. The foundation pile connection method or foundation pile set according to the present invention is a pin connection chain in which a plurality of link plates as split key members are connected by pins as linkage mechanisms, and are linked to each other in advance via the linkage mechanism. A plurality of split key members may be configured.
2. The foundation pile connection method or foundation pile set according to the present invention has an opening for facing a part of the outward circumferential groove in the longitudinal direction of the groove outward. It may be provided at one place in the circumferential direction.
3. Even if the foundation pile connection method or foundation pile set according to the present invention is used to detachably connect an erection jig used for erection of the foundation pile to the foundation pile. good.
That is, you may use in order to connect the erection jig provided with the connection part which formed the inward circumferential groove similar to an external fitting member to the internal fitting member of a foundation pile.
In this case, remove each split key member from the inward circumferential groove and the outward circumferential groove so that the erection jig can be easily removed from the foundation pile. It is desirable to leave the wire after mounting over the circumferential groove without cutting.
4). The foundation pile connection method or foundation pile set according to the present invention comprises a rope body as a linkage mechanism for linking a plurality of divided key members with metal chains, wires, strings made of fiber, ropes, etc. It may be.
5. The foundation pile connection method or foundation pile set according to the present invention may include a foundation pile having a rectangular cross-sectional shape.
6). The foundation pile connection method or foundation pile set according to the present invention may include foundation piles such as steel pipe sheet piles for earth retaining, landslide prevention piles, and pier columns, in addition to foundation piles for structure installation.

2 external fitting member 3 internal fitting member 8 outward circumferential groove 8a outward circumferential groove portion 11 inward circumferential groove 15 split key member 16 opening A foundation pile B linkage mechanism

Claims (9)

A pair of foundation piles each having an outer fitting member and an inner fitting member distributed to both ends are fitted together with the outer fitting member of one foundation pile and the inner fitting member of the other foundation pile. After that, in order to engage and connect with each other in the longitudinal direction of the foundation pile,
In addition to forming an inward circumferential groove on the inner peripheral side of the outer fitting member, forming an outward circumferential groove on the outer peripheral side of the inner fitting member,
In a state where the outer fitting member and the inner fitting member are fitted to each other, a key member to be mounted across the inward circumferential groove and the outward circumferential groove has a plurality of divided keys in the foundation pile circumferential direction. While composed of members,
In the state where the outer fitting member and the inner fitting member are fitted to each other, an opening for allowing a part of the outward circumferential groove to face outward is formed in the outer fitting member.
After the outer fitting member and the inner fitting member are fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, It is a connecting method of a foundation pile that is mounted across the inward circumferential groove and the outward circumferential groove and engages the outer fitting member and the inner fitting member in the longitudinal direction of the foundation pile,
In each of the split key members, the front surface in the insertion direction front side and the rear surface in the insertion direction rear side are formed in an arc shape that curves toward the front side in the insertion direction,
A plurality of the split key members are linked in advance to each other so that each split key member can be inserted between the inward circumferential groove and the outward circumferential groove so that the posture can be freely changed. A method for connecting foundation piles to be mounted in order across a circumferential groove and the outward circumferential groove. A pair of foundation piles each having an outer fitting member and an inner fitting member distributed to both ends are fitted together with the outer fitting member of one foundation pile and the inner fitting member of the other foundation pile. After that, in order to engage and connect with each other in the longitudinal direction of the foundation pile,
In addition to forming an inward circumferential groove on the inner peripheral side of the outer fitting member, forming an outward circumferential groove on the outer peripheral side of the inner fitting member,
In a state where the outer fitting member and the inner fitting member are fitted to each other, a key member to be mounted across the inward circumferential groove and the outward circumferential groove has a plurality of divided keys in the foundation pile circumferential direction. While composed of members,
In the state where the outer fitting member and the inner fitting member are fitted to each other, an opening for allowing a part of the outward circumferential groove to face outward is formed in the outer fitting member.
After the outer fitting member and the inner fitting member are fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, It is a connecting method of a foundation pile that is mounted across the inward circumferential groove and the outward circumferential groove and engages the outer fitting member and the inner fitting member in the longitudinal direction of the foundation pile,
By connecting adjacent divided key members with connecting members that are separate from the divided key members, a plurality of the divided key members are connected to each other by the divided key members. A method of connecting foundation piles that are linked in advance to each other so as to be freely changeable in a posture that can be inserted between the facing circumferential grooves and that are sequentially mounted across the inward circumferential grooves and the outward circumferential grooves. A pair of foundation piles each having an outer fitting member and an inner fitting member distributed to both ends are fitted together with the outer fitting member of one foundation pile and the inner fitting member of the other foundation pile. After that, in order to engage and connect with each other in the longitudinal direction of the foundation pile,
In addition to forming an inward circumferential groove on the inner peripheral side of the outer fitting member, forming an outward circumferential groove on the outer peripheral side of the inner fitting member,
In a state where the outer fitting member and the inner fitting member are fitted to each other, a key member to be mounted across the inward circumferential groove and the outward circumferential groove has a plurality of divided keys in the foundation pile circumferential direction. While composed of members,
In the state where the outer fitting member and the inner fitting member are fitted to each other, an opening for allowing a part of the outward circumferential groove to face outward is formed in the outer fitting member.
After the outer fitting member and the inner fitting member are fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, It is a connecting method of a foundation pile that is mounted across the inward circumferential groove and the outward circumferential groove and engages the outer fitting member and the inner fitting member in the longitudinal direction of the foundation pile,
A through hole is formed concentrically in each of the split key members,
A knot that is engageable with an end of the through-hole between the adjacent split keys is provided between the adjacent split keys while inserting the strip into the through-hole, and a plurality of the split key members are attached. The split key members are linked in advance to each other in such a manner that the split key members can be inserted between the inward circumferential grooves and the outward circumferential grooves, and the inward circumferential grooves and the outward circumferential grooves. A method of connecting foundation piles to be installed in sequence. A pair of foundation piles each having an outer fitting member and an inner fitting member distributed to both ends are fitted together with the outer fitting member of one foundation pile and the inner fitting member of the other foundation pile. After that, in order to engage and connect with each other in the longitudinal direction of the foundation pile,
In addition to forming an inward circumferential groove on the inner peripheral side of the outer fitting member, forming an outward circumferential groove on the outer peripheral side of the inner fitting member,
In a state where the outer fitting member and the inner fitting member are fitted to each other, a key member to be mounted across the inward circumferential groove and the outward circumferential groove has a plurality of divided keys in the foundation pile circumferential direction. While composed of members,
In the state where the outer fitting member and the inner fitting member are fitted to each other, an opening for allowing a part of the outward circumferential groove to face outward is formed in the outer fitting member.
After the outer fitting member and the inner fitting member are fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, It is a connecting method of a foundation pile that is mounted across the inward circumferential groove and the outward circumferential groove and engages the outer fitting member and the inner fitting member in the longitudinal direction of the foundation pile,
One of an engaging convex portion and an engaging concave portion that can be engaged with each other is integrally formed on the front side in the insertion direction of the split key member, and the engaging convex portion is formed on the rear side in the insertion direction of the split key member. A plurality of the divided key members are formed by integrally forming the other of the engaging portions and the engaging concave portions, and engaging the engaging convex portions with the engaging concave portions to connect the divided key members adjacent to each other. The split key members are preliminarily linked to each other in such a manner that the split key members can be inserted between the inward circumferential grooves and the outward circumferential grooves. A method for connecting foundation piles that are installed in sequence over the circumferential groove. An outer fitting member and an inner fitting member are provided separately at both ends, an inward circumferential groove is formed on the inner circumferential side of the outer fitting member, and the outer circumferential side of the inner fitting member is outward. A foundation pile with a circumferential groove;
In order to engage and connect a pair of foundation piles to each other in the longitudinal direction of the foundation pile, the outer fitting member of one foundation pile and the inner fitting member of the other foundation pile are fitted to each other, A key member mounted across the inward circumferential groove and the outward circumferential groove,
The key member is composed of a plurality of divided key members in the foundation pile circumferential direction,
The outer fitting member is formed with an opening for allowing a part in the longitudinal direction of the outward circumferential groove to face outward in a state where the outer fitting member and the inner fitting member are fitted to each other. And
After the outer fitting member and the inner fitting member are fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, A foundation pile set configured to be fitted over the inward circumferential groove and the outward circumferential groove so that the outer fitting member and the inner fitting member can be engaged with each other in the longitudinal direction of the foundation pile. ,
The plurality of split key members are preliminarily linked with each other via a linkage mechanism so as to be insertable between the inward circumferential groove and the outward circumferential groove.
In each of the divided key members, a foundation pile set in which a front surface on the front side in the insertion direction and a rear surface on the rear side in the insertion direction are formed in an arc shape that curves toward the front side in the insertion direction. An outer fitting member and an inner fitting member are provided separately at both ends, an inward circumferential groove is formed on the inner circumferential side of the outer fitting member, and the outer circumferential side of the inner fitting member is outward. A foundation pile with a circumferential groove;
In order to engage and connect a pair of foundation piles to each other in the longitudinal direction of the foundation pile, the outer fitting member of one foundation pile and the inner fitting member of the other foundation pile are fitted to each other, A key member mounted across the inward circumferential groove and the outward circumferential groove,
The key member is composed of a plurality of divided key members in the foundation pile circumferential direction,
The outer fitting member is formed with an opening for allowing a part in the longitudinal direction of the outward circumferential groove to face outward in a state where the outer fitting member and the inner fitting member are fitted to each other. And
After the outer fitting member and the inner fitting member are fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, A foundation pile set configured to be fitted over the inward circumferential groove and the outward circumferential groove so that the outer fitting member and the inner fitting member can be engaged with each other in the longitudinal direction of the foundation pile. ,
The plurality of divided key members are connected to each other by connecting the adjacent divided key members with connecting members that are separate from the divided key members. A set of foundation piles that are linked together in advance so that they can be inserted between them. An outer fitting member and an inner fitting member are provided separately at both ends, an inward circumferential groove is formed on the inner circumferential side of the outer fitting member, and the outer circumferential side of the inner fitting member is outward. A foundation pile with a circumferential groove;
In order to engage and connect a pair of foundation piles to each other in the longitudinal direction of the foundation pile, the outer fitting member of one foundation pile and the inner fitting member of the other foundation pile are fitted to each other, A key member mounted across the inward circumferential groove and the outward circumferential groove,
The key member is composed of a plurality of divided key members in the foundation pile circumferential direction,
The outer fitting member is formed with an opening for allowing a part in the longitudinal direction of the outward circumferential groove to face outward in a state where the outer fitting member and the inner fitting member are fitted to each other. And
After the outer fitting member and the inner fitting member are fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, A foundation pile set configured to be fitted over the inward circumferential groove and the outward circumferential groove so that the outer fitting member and the inner fitting member can be engaged with each other in the longitudinal direction of the foundation pile. ,
A through hole is formed concentrically in each of the split key members, and the plurality of split key members can be inserted between the inward circumferential grooves and the outward circumferential grooves. Inserted through the through-holes and linked to each other in advance,
A foundation pile set in which a knot that can be engaged with an end portion of the through hole is provided in the cable body between the adjacent split keys. An outer fitting member and an inner fitting member are provided separately at both ends, an inward circumferential groove is formed on the inner circumferential side of the outer fitting member, and the outer circumferential side of the inner fitting member is outward. A foundation pile with a circumferential groove;
In order to engage and connect a pair of foundation piles to each other in the longitudinal direction of the foundation pile, the outer fitting member of one foundation pile and the inner fitting member of the other foundation pile are fitted to each other, A key member mounted across the inward circumferential groove and the outward circumferential groove,
The key member is composed of a plurality of divided key members in the foundation pile circumferential direction,
The outer fitting member is formed with an opening for allowing a part in the longitudinal direction of the outward circumferential groove to face outward in a state where the outer fitting member and the inner fitting member are fitted to each other. And
After the outer fitting member and the inner fitting member are fitted to each other, each of the split key members is inserted between the inward circumferential groove and the outward circumferential groove through the opening, A foundation pile set configured to be fitted over the inward circumferential groove and the outward circumferential groove so that the outer fitting member and the inner fitting member can be engaged with each other in the longitudinal direction of the foundation pile. ,
One of an engaging convex portion and an engaging concave portion that can be engaged with each other is integrally formed on the front side in the insertion direction of the split key member, and the engaging convex portion is formed on the rear side in the insertion direction of the split key member. Part and the other of the engaging recess are integrally formed,
The plurality of split key members are connected to each other by connecting the adjacent split key members by engaging the engaging convex portion and the engaging concave portion, so that the inward circumferential groove and the outward circumferential groove. Foundation pile set that is linked with each other in advance so that it can be inserted between the two.   The key member with which the foundation pile set as described in any one of Claim 5 to 8 was equipped.

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