JP2017179863A - Joining hardware guide device for pile foundation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize an improvement in workability and security of accuracy, by easily and accurately absorbing a construction error of a pile, when constructing a pile foundation structure 1 for joining the pile and a sill of a superstructure via joining hardware 2.SOLUTION: A joining hardware guide device 11 comprises a positioning engaging part 11b engageable with a positioning part of joining hardware 2 (a rib 7c of still side hardware 7) at a predetermined interval corresponding to a design pile interval in its longitudinal direction in a long-size body 11a of high rigidity for extending between a plurality of piles 3. The long-size body 11a of the joining hardware guide device is extended between both-side piles 3 (3) having the joining hardware 2 (2) positioned as a reference. In a positional adjustment of the joining hardware 2 on the plurality of piles 3 existing in the middle, the positional adjustment in the horizontal two-directions and the height direction is executed only by engaging the positioning part 7c of its joining hardware 2 with the positioning engaging part 11b. A construction error of the pile can be efficiently and accurately adjusted more than a method for stretching a leveling string.SELECTED DRAWING: Figure 1

Description

  The present invention provides a method for connecting a pile for foundation and a base of its superstructure via a joint hardware having a position adjusting function for absorbing a construction error of the placed pile. The present invention relates to a joint hardware guide device for a pile foundation for positioning the positioning portion of the joint hardware so that the construction error is correctly absorbed.

Concrete foundations are generally used for the foundations of structures such as buildings. If the ground is bad, piles for ground improvement are driven into the concrete foundation, and the foundation of the upper structure is placed on the concrete foundation. It is done to install.
However, in view of the recent decrease in formwork and rebar carpentry and the improvement of construction efficiency by shortening the concrete curing period, the concrete foundation is omitted, and the pile (steel pipe pile) and the foundation of the upper building are connected via joint hardware. Pile foundation structures that are directly joined are proposed.

As this type of pile foundation structure, for example, Patent Document 1 (Japanese Patent Laid-Open No. 2010-196286 "Building Foundation Bracket and Building Foundation Structure") and Patent Document 2 (Patent No. 5364882 "Solar Cell Module or Solar Cell Array Foundation" Structure ") etc.
Patent document 1 is a proposal about the structure of the metal fitting for building foundations which makes it possible to improve the earthquake resistance of a building.
Patent Document 2 is a configuration in which a long hole is provided in a disk-shaped connecting bracket fixed to the lower end of the leg of the gantry, and a connection shaft protruding from the steel pipe pile side is movably attached to the long hole. The connection fitting is moved and adjusted to adjust the misalignment between the axis of the gantry leg and the axis of the pile.

JP 2010-196286 Japanese Patent No. 5356482

By the way, in general, it is difficult to construct a pile at an exact position as designed, and construction errors in the horizontal direction and the height direction are unavoidable.
Therefore, in order to realize a pile foundation structure in which the concrete foundation is omitted and the pile and the base of the upper structure are joined through the joint hardware, it is necessary to provide a mechanism capable of absorbing this construction error.

In terms of absorbing construction errors, Patent Document 1 does not mention anything.
In Patent Document 2, it is possible to adjust the misalignment between the axis of the pedestal leg and the axis of the pile by moving and adjusting the connecting bracket. Two or more strings are crossed (orthogonal) on the steel pipe pile exposed from the center, and each intersection of the strings is positioned at the axis of the leg of the gantry, and the deviation position from the intersection is confirmed. Then, the method of moving and adjusting the disk-shaped metal fitting is described.
This adjustment method is a general method of adjusting the position by stretching a water thread. However, in order to stretch the water thread, a water pile or water runner ( The troublesome work of stretching the board is necessary.

Further, the adjustment method using the water thread has a problem that high accuracy cannot be expected in the position adjustment.
In particular, for the construction of a pile foundation structure that joins a pile and a base via a joint hardware, it is necessary to adjust the joint hardware with high accuracy with respect to the foundation, and positioning with water yarn is difficult to say.
Further, when the foundation is a wooden foundation, the fact that sufficiently high accuracy cannot be obtained is the biggest problem due to the circumstances described below.

In the case of a wooden base, a pre-cut construction method in which wood is pre-processed in a factory in order to improve construction efficiency at the site and the assembly at the site is simplified is the mainstream.
The pre-cut construction method is a construction method that has been widely used for the purpose of recent shortages of technicians, variations in construction skills, and improvement of workability, and the machining accuracy is very high because of factory production.
And, in the pile foundation structure using the joint hardware, processing such as slits and notches matching the ribs of the joint hardware to the wood (wooden base), and inserting the ribs of the joint hardware into the slits, etc. Connect the rib and foundation with drift pins or bolts.
In this way, when joining a precut wooden base to a pile foundation joint using a joint hardware, for example, a rib of the joint hardware installed on the pile head is inserted into a slit provided in advance and coupled with a drift pin or the like Therefore, in addition to the horizontal error of the pile (about ± 50mm from the design value), the vertical position error (about ± 10mm) should also be used to accurately position the joint hardware before installing the wooden base. I have to leave.
The pre-cut construction error in the factory is generally said to be 0.5 mm or less, and precise position adjustment is required, so the position adjustment method using water thread is a pile foundation using joint hardware There was a problem that it was not suitable for construction.

  The present invention has been made based on the above background, and the foundation pile and the foundation of the superstructure thereof are joined via a joint hardware having a position adjusting function for absorbing construction errors of the placed pile. When joining, it is possible to position and attach the joint hardware to the pile head efficiently and accurately, and it is possible to achieve both improvement of workability such as shortening the construction period and ensuring accuracy. An object is to provide a guide device.

Invention of Claim 1 which solves the said subject WHEREIN: In construction of the pile foundation structure which joins the pile made from a steel pipe, and the foundation of the superstructure via a joint metal, the said joint metal is the positioning part with respect to the said base, and the said It is a joint hardware guide device for a pile foundation for adjusting the position of the positioning part of the joint hardware provided with a position adjusting means for absorbing construction errors of piles,
The joint hardware guide device for the pile foundation includes a highly rigid long body that passes between a plurality of piles,
The elongate body is characterized in that a positioning engagement portion that can be engaged with the positioning portion of the metal fitting is provided at a predetermined interval corresponding to the design pile interval in the longitudinal direction.

  A second aspect of the present invention is the joint guide apparatus for a pile foundation according to the first aspect, wherein the positioning portion of the joint hardware is a rib vertically fixed to the upper surface of the joint hardware, and is a pair for positioning with the base. It has a base positioning hole, and the positioning engaging portion of the elongated body is a positioning pin that can be inserted into the base positioning hole.

  Claim 3 is a joint guide apparatus for pile foundation according to claim 1, wherein the positioning portion of the joint hardware is a rib having a vertical edge on both sides, which is fixed vertically to the upper surface of the joint hardware. The positioning engaging portions of the elongated body are a pair of opposing plates fixed to the both sides of the rib at positions where the vertical end edges are sandwiched from both sides.

  According to a fourth aspect of the present invention, in the joint guide apparatus for pile foundation according to the first or second aspect, the elongated body is a chevron-shaped cross-section steel material, and the positioning pin is provided on a longitudinal side portion thereof, or the pair of pairs The plate is fixed.

  Claim 5 is the joint hardware guide device for pile foundation according to any one of claims 1 to 4, wherein the joint hardware position adjusting means includes two horizontal directions in the X-axis direction and the Y-axis direction, and a vertical direction. The position can be adjusted in the Z direction.

When adjusting the misalignment of each pile placed in the construction site using the joint hardware guide device of the present invention, the piles at both ends of the plurality of piles arranged in a straight line although there is a construction error (for example, For the piles at the four corners of the construction area, and if necessary, two piles on both sides sandwiching multiple piles between them, the joint hardware attached to the pile heads is the reference for the pile position Position in advance so that
And the elongate body of a joining hardware guide apparatus is installed so that it may pass between the piles of the both sides which have the said joining hardware positioned as a reference | standard on the upper part. That is, the positioning parts of the joint hardware at the heads of the piles on both sides are respectively engaged with the positioning engaging parts at both ends of the long body.
About the some pile between the piles of the said both sides, the positioning part of the joint metal fitting attached to the pile head in the state which can be adjusted is engaged with the engaging part for positioning of the middle of the said elongate body And since the position of the joint hardware is adjusted so as to absorb the construction error of the pile, the position-adjusted joint hardware is permanently fixed.
By repeatedly performing the above-described operation for each region of the entire pile construction area appropriately divided, it is possible to adjust the position of the joint hardware of the pile head for the entire pile in the pile construction area.

  As described above, it is not necessary to perform prior work such as installation and height adjustment of water thread for tensioning the water thread, and installation of water thread, and the tool for adjusting the construction error of the pile is only the joint hardware guide device The pile construction error can be adjusted efficiently, improving workability and shortening the construction period.

Since the position adjustment by this metal fitting guide device uses a long body having high rigidity such as a steel material, the accuracy is easily ensured as compared with the case of a water yarn that easily bends.
In addition, compared with the case where the position of the joint hardware is adjusted manually, the positioning is performed by engaging the positioning member on the elongated body side with the positioning part on the joint hardware side, so that the position adjustment without causing an error can be performed. This is done and high accuracy is ensured in this respect.
In addition, for each joint hardware on a plurality of piles, it is necessary to engage the positioning member on the long body side with the positioning part on the joint hardware side, but the engagement work itself requires accuracy. Since it is very simple and not a work to be performed, it can be said that the position of the joint hardware can be adjusted almost collectively for a plurality of piles, and the positioning work becomes extremely efficient.

  In addition, since the long body of the metal joint guide device is made of a high strength material such as steel, it can be reused as long as it does not bend, bend or rust.

It is a figure explaining the usage aspect of the joint hardware guide apparatus for pile foundations of one Example of this invention used in construction of the pile foundation structure which joins a pile and the foundation of the superstructure through a joint hardware. is there. It is an enlarged view of the part of one pile in FIG. 1 (however, the elongate body of the joining hardware guide apparatus is shown with the dashed-two dotted line). It is the side view seen from the X-axis direction of FIG. 2 and the opposite side (front side). It is the side view seen from the Y-axis direction of FIG. FIG. 3 is an exploded perspective view of FIG. 2. (A) is a plan view of FIG. 3, (b) is a plan view of the base-side hardware in (a), and (c) is a plan view of the position adjustment hardware in (b). However, none of them shows the long body 11a). It is the figure which showed the state by which the joint metal guide apparatus in FIG. 3 was removed and the foundation (wooden base) was installed. It is the figure which removed the joining metal-material guide apparatus in FIG. 4, and showed the state in which the base (wooden base) was installed. FIG. 7 is a view corresponding to FIG. 2, showing another embodiment of the positioning engagement portion in the metal joint guide device of the first embodiment. It is the side view which showed a part seen from the X-axis direction opposite side (front side) of FIG. 9 in the cross section. It is the side view seen from the Y-axis direction of FIG. (A) is a front view of a part omission of the joint hardware guide device in the embodiment of FIGS. 1 to 8, (B) is a right side view of (A), and (C) is a joint in the embodiment of FIGS. The front view of partial omission of a hardware guide device, (D) is a right side view of (C).

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the joining hardware guide apparatus for pile foundations of this invention is demonstrated with reference to drawings.

FIG. 1 illustrates a usage mode of a joint hardware guide device 11 for a pile foundation used in the construction of a pile foundation structure 1 that joins a steel pipe pile 3 and a base of its superstructure via a joint hardware 2. FIG. FIG. 2 is an enlarged view of a portion of one pile in FIG. 1 (however, the long body of the joint hardware guide device is indicated by a two-dot chain line). 3 is a side view as seen from the opposite side (front side) to the X-axis direction in FIG. 2, FIG. 4 is a side view as seen from the Y-axis direction in FIG. 2, and FIG. 5 is an exploded view of FIG.
As shown in these drawings, this pile foundation structure 1 is a pile foundation structure formed by joining a steel pipe pile 3 and a wooden base 4 of its superstructure via the joint hardware 2.
The joint hardware 2 is interposed between the pile side hardware 6 to be joined to the head 3 a of the pile 3, the base side hardware 7 to be joined to the base 4, and the pile side hardware 6 and the base side hardware 7. A position adjusting hardware 8 for joining the pile side hardware 6 and the foundation side hardware 7 so that the positions can be adjusted in the two horizontal directions of the X-axis direction and the Y-axis direction orthogonal to each other; A height position adjusting means is provided for adjusting the height position. The height position adjusting means in this embodiment is a spacer 20 described later.

 The connection relationship between the pile-side hardware 6 and the position adjustment hardware 8 and the connection relationship between the position adjustment hardware 8 and the base-side hardware 7 are supplementarily shown in FIGS. FIG. 6A is a plan view of FIG. 3, FIG. 6B is a plan view of the base side hardware 7 in FIG. 6A, and FIG. 6C is a plan view of the position adjustment hardware 8 in FIG. FIG. However, in any case, illustration of the joint hardware guide device 11 is omitted.

The pile-side hardware 6 has a flange-like portion 6b on both sides of a semi-cylindrical portion 6a, and a band-like half made of a pair of flexible metal plates having a horizontal plate 6c fixed to the upper part of each semi-cylindrical portion on the inner diameter side. There are provided a member 6d and a first joining bolt 6e for joining a position adjusting hardware (for joining with the position adjusting hardware) fixed vertically to each horizontal plate 6c. The part excluding the horizontal plate 6c in the pile-side hardware 6 is substantially the same as that of a type in which a pair of halves having flanges on both sides are coupled with bolts in what is called a power pole band or the like. .
The first joining bolt 6e is passed through the hole formed in the horizontal plate 6c from the lower surface side of the plate, and the bolt head on the lower surface side is welded and fixed to the horizontal plate 6c (may be fixed temporarily by spot welding).
Then, the pile head 3a is sandwiched from both sides by the pair of half members 6d, and the flanges 6b are fastened with bolts 12 passed through the bolt insertion holes 6f and nuts 13 screwed into the bolt heads. It joins to part 3a.

The position adjusting hardware 8 has two first long holes 8b that are long in the Y-axis direction in which the two first joining bolts 6e of the pile-side hardware 6 are inserted into the plate-shaped main body 8a, and This is a configuration having two second joining bolts 8c for joining to the base-side hardware (for joining with the base-side hardware) fixed vertically with an interval in the Y-axis direction. A nut to be screwed onto the first joining bolt 6e is indicated by 6e ′.
The second connecting bolt 8c is fixed by welding so that the bolt head 8d on the lower surface side of the plate-like main body 8a is not dropped out by inserting the bolt shaft portion into the hole formed in the plate-like main body 8a. (Temporary fixing by spot welding is sufficient.)
In the illustrated example, a plate-like leg 8e is provided on the lower surface of the plate-like main body 8a to provide a space for intersecting the bolt head 8d.

  The base-side hardware 7 has two second long holes 7b that are long in the X-axis direction in which the two second joining bolts 8c of the position adjusting hardware 8 are inserted in the plate-shaped main body 7a, and The upper surface has a rib 7c which is a positioning portion for the base. The rib (positioning portion) 7c has a drift pin insertion hole 7d for aligning with the base 4, and is fixed vertically to the plate-like main body 7a. A nut to be screwed into the second joining bolt 8c is indicated by 8c '.

  3 and 4, reference numeral 20 denotes a height position adjusting means for the base-side hardware 7, and a spacer is interposed between the plate-like main body 7 a of the base-side hardware 7 and the plate-like main body 8 a of the position adjustment hardware 8. That spacer in case.

The position adjustment operation of the above-mentioned joint hardware 2 attached to the head of the pile 3 will be described. In the Y-axis direction position adjustment, the position adjustment hardware 8 is moved and adjusted with respect to the pile-side hardware 6 in the Y-axis direction. In this case, since the first long hole 8b of the position adjusting hardware 8 into which the first joining bolt 6e of the pile side hardware 6 is inserted is a long hole in the Y axis direction, the position adjusting hardware 8 is moved in the Y axis direction. Can be adjusted.
In the position adjustment in the X-axis direction, the base joint metal 7 is moved and adjusted in the X-axis direction with respect to the position-adjustment hardware 8. In this case, since the second long hole 7b of the base joint metal 7 into which the second joint bolt 8c of the position adjustment metal base 8 is inserted is a long hole in the X-axis direction, the base joint metal 7 is moved in the X-axis direction. Can be adjusted.

As shown in FIGS. 1 to 3 and FIGS. 12 (a) and 12 (b), the joint hardware guide device 11 is provided in a longitudinal direction on a long, rigid body 11a that passes between a plurality of piles. Positioning engagement portions 11b for positioning and engaging the ribs 7c of the base-side hardware 7 are provided at a predetermined interval corresponding to the design pile interval. In this embodiment, two positioning pins 11c that can be inserted corresponding to the two drift pin insertion holes 7d of the rib 7c are provided as the positioning engaging portions 11b.
In the embodiment, as the long body 11a, for example, a light angle steel with an equal side having a side length of 70 mm is used. In the embodiment, a bolt as the positioning pin 11c is inserted and fixed in a positioning pin insertion hole formed on the long body 11a side.
The positioning pin 11c is not fixed to the positioning pin insertion hole of the long body 11a, but is inserted into the positioning pin insertion hole at the time of positioning operation so as to be engaged with the rib 7c of the base side metal piece 7. Also good.

When adjusting the misalignment of each pile driven in the construction site using the above-mentioned joint hardware guide device 11, for example, among the four corner piles of the construction area, and if necessary, the intermediate piles thereof, About two piles of the both sides which pinch | interpose a some pile between them, the joining metal fitting 2 attached to those pile heads is correctly positioned so that it may become the reference | standard of a pile position.
The case of the embodiment shown in FIG. 1 will be described. In the example shown in the figure, there is a construction error, but the piles 3 (3 ₀ ) at both ends of the four piles 3 are attached to the pile heads. The joint metal fitting 2 (2 ₀ ) is previously positioned so as to serve as a reference for the pile position. Here, in the case of “positioning the joint hardware 2”, it is to correctly position the base-side hardware 7 of the joint hardware 2 so as to correspond to the design pile position, and is a positioning portion of the base-side hardware 7 directly. It points out positioning the rib 7c correctly.

And the elongate body 11a of the joining hardware guide apparatus 11 is installed so that it may pass between the piles 3 (3 ₀ ) of the both sides which have the said joining hardware 2 (2 ₀ ) positioned as a reference | standard. That is, the ribs 7c of the base-side hardware 7 of the joint hardware 2 (2 ₀ ) at the heads of the piles 3 (3 ₀ ) on both sides are respectively engaged with the positioning engaging portions 11b at both ends of the long body 11a. Specifically, the two positioning pins 11c of the positioning engaging portions 11b at both ends of the long body 11a are inserted into the two drift pin insertion holes 7d of the rib 7c, so that the rib 7c of the base metal fitting 7 is long. Engage with the positioning engaging portion 11b of the scale 11a.

Thereafter, in the illustrated example between the piles 3 (3 ₀ ) on both sides, the position of the joint hardware 2 attached to the pile heads in a temporarily attached state capable of adjusting the position is adjusted for the two piles 3. The “adjustable temporary mounting state” means that the position adjusting hardware 8 in the joint hardware 2 can move in the Y-axis direction with respect to the pile side hardware 6 (a state where the nut 6e ′ is not fastened), and This refers to a state in which the base side hardware 7 is movable in the X-axis direction with respect to the position adjustment hardware 8 (a state in which the nut 8c ′ is not fastened).
That is, the rib 7c of the base side metal fitting 7 of the joint hardware 2 temporarily attached to the head 3a of the pile 3 is engaged with the corresponding positioning engaging portion 11b in the middle of the long body 11a. Specifically, the two positioning pins 11c of the corresponding positioning engaging portion 11b in the middle of the long body 11a are inserted into the two drift pin insertion holes 7d of the rib 7c, so that the rib 7c of the base-side hardware 7 is inserted. Is engaged with the corresponding positioning engaging portion 11b in the middle of the long body 11a.
In this state, the intermediate joint hardware 2 (directly its base-side hardware 7) is correctly adjusted so as to absorb the construction error of the pile.
At this point, a spacer 20 having an accurate height is inserted between the plate-like main body 8a of the position adjusting hardware 8 and the plate-like main body 7a of the base-side metal piece 7 so as to fill the gap between the two plate-like main bodies 8a, 7a. .
Next, the nut 6e ′ screwed on the upper surface side of the plate-like main body 8a of the position adjusting metal 8 is fastened to the first bonding bolt 6e of the pile side metal 6 and the second bonding of the position adjusting metal 8 is performed. When the nut 8c ′ screwed on the upper surface of the plate-like main body 7a of the base-side metal piece 7 is fastened to the bolt 8c, the joint metal piece 2 is correctly positioned in two horizontal directions and in the height direction (directly Specifically, the base side hardware 7 is fixed to the pile head in a state where the position is correctly adjusted in two horizontal directions and in the height direction.

  When the adjustment work of the joint hardware 2 is completed as described above, the joint hardware guide device 11 is removed from the joint hardware 2 and the same work is performed on the pile in the next region using the joint hardware guide device 11. The center misalignment adjustment of the entire pile in the pile construction region is performed by sequentially repeating the same operation for each region of the entire pile appropriately divided.

  As described above, it is not necessary to perform prior work such as installation / height adjustment of the water thread for tensioning the water string, and installation of the water thread, and the tool for adjusting the construction error of the pile is the joint hardware guide device 11. It is possible to adjust the pile construction error efficiently.

Since the position adjustment by the metal joint guide device 11 is performed using the long steel body 11a having high rigidity, the accuracy is easily ensured as compared with the case of the water yarn that is easily bent.
Further, since the positioning pin 11c (positioning engaging portion 11b) on the long body 11a side and the rib 7c (positioning portion) on the joint metal piece 2 are engaged, the joint metal object is manually positioned. Compared with the case of adjustment, position adjustment without error is performed, and high accuracy is ensured also in this respect.
Moreover, although the operation | work which engages the positioning pin 11c by the side of the elongate body 11a and the rib 7c by the side of the metal fitting 2 is required for every metal fitting 2 on a some pile, the engagement operation itself is precision. Therefore, it is possible to adjust the position of the joint hardware 2 about the plurality of piles 3 in a lump, and the positioning work becomes extremely efficient.
Further, since the steel long body 11a has a sufficiently high strength, it can be reused as long as it is not bent, bent, rusted, or the like. In addition, as long as rigidity is sufficient, you may use not only metal but the resin long body.

After fixing the joint hardware 2 to the pile head so as to absorb the pile construction error for the entire pile in the construction area, the base 4 of the upper structure is installed as shown in FIGS.
The base 4 of the embodiment is a wooden base, and the base 4 is placed on the plate-like main body 7 a of the base-side hardware 7 so that the ribs 7 c of the base-side hardware 7 enter the grooves 4 a provided on the lower surface of the base 4.
Then, as alignment in the longitudinal direction of the base 4, the drift pin 22 is inserted from the opening end of the lateral drift pin fitting hole 4 b provided in the base 4, and the drift pin insertion hole 7 d of the base side hardware 7 is penetrated. The drift pin fitting hole 4b of the embodiment penetrates and can be inserted from either side of the base side.

FIGS. 9 to 11, 12 </ b> C, and 12 </ b> D show another embodiment of the positioning engagement portion 11 a in the metal joint guide device 11 of the first embodiment. The target joint hardware 2 is the same.
The joint metal guide device 31 of this embodiment is a positioning engagement portion 31b of a long body 31a made of the same lightweight angle steel as that of the first embodiment, and is composed of two positioning pins 11c in the joint hardware guide device 11 described above. Instead of the engagement portion 11b, a pair of plates 31c facing each other at positions sandwiching the vertical end edges on both sides of the rib 7c of the base metal fitting 7 are welded and fixed to the vertical side 31e of the lightweight angle steel. .

The metal fitting guide device 31 of this embodiment is different from that of the first embodiment in the positioning engaging portion 31b, but the basic usage is substantially the same as in the first embodiment.
That is, the elongate body 31a of the joint hardware guide apparatus 31 is installed so that it may pass between the piles 3 (3 ₀ ) of the both sides which have the said joint hardware 2 (2 ₀ ) positioned as a reference | standard on the upper part.
Subsequently, the rib 7c of the base side metal fitting 7 of the joint metal fitting 2 temporarily attached to the head 3a of the pile 3 is engaged with the corresponding positioning engaging portion 31b in the middle of the long body 31a. Specifically, the ribs 7c of the base-side hardware 7 that is the positioning portion of the joint hardware 2 are placed between the pair of plates 31c that are the positioning engaging portions 31b, and the back surface of the rib 7c is angle steel. It raises until it touches the inner surface of the vertical side 31e of the long body 31a, and the upper end surface of the rib 7c contacts the top surface (horizontal horizontal side) 31d of the long body 31a.
In this state, the position of the joining hardware 2 is correctly adjusted so as to absorb the construction error of the pile, so that the space between the plate-like main body 8a of the position-adjusting hardware 8 and the plate-like main body 7a of the base-side hardware 7 will be described. In this state, a nut 6e 'screwed with the first joining bolt 6e is fastened, and a nut 8c' screwed with the second joining bolt 8c is fastened. The hardware 2 is fixed to the pile head with the position adjusted correctly.

DESCRIPTION OF SYMBOLS 1 Pile foundation structure 2 Joint metal 3 Pile 3a (made of steel pipe) Pile head 4 Base 4a Groove 4b Drift pin fitting hole 6 Pile side metal 6a Semi-cylindrical part 6b Flange part 6c Horizontal plate 6d Half member 6e First joint Bolt 6f Bolt insertion hole 7 Base side hardware 7a Plate body 7b Second long hole 7c Rib (positioning part)
7d Drift pin insertion hole (base positioning hole)
8 Position adjustment hardware 8a Plate-shaped main body 8b 1st long hole 8c 2nd joining bolt 8c '(screwed to 2nd joining bolt) Nut 8d (2nd joining bolt) bolt head 11, 31 For pile foundation Metal fitting guide devices 11a, 31a Long bodies 11b, 31b Positioning engagement portion 11c Positioning pin 20 Spacer (height position adjusting means)
22 Drift pin 31c Plate 31d Top surface 31e Vertical side

Claims (5)

In the construction of a pile foundation structure in which a steel pipe pile and the base of its superstructure are joined via a joint hardware, the joint hardware has a positioning portion for the base and a position adjusting means for absorbing construction errors of the pile. A joint hardware guide device for pile foundation for adjusting the position of the positioning part of the joint hardware comprising:
The joint hardware guide device for the pile foundation includes a highly rigid long body that passes between a plurality of piles,
The long body is provided with a positioning engagement portion that can be engaged with the positioning portion of the joint hardware at a predetermined interval corresponding to the design pile interval in the longitudinal direction. Bonding hardware guide device. The joint metal positioning portion is a rib vertically fixed to the upper surface of the joint hardware, and has a base positioning hole for positioning with the base,
The joint hardware guide device for pile foundation according to claim 1, wherein the positioning engaging portion of the elongated body is a positioning pin that can be inserted into the positioning base positioning hole. The positioning part of the joint metal is a rib having a vertical edge on both sides fixed vertically to the upper surface of the joint metal, and the positioning engaging part of the elongated body is on both sides of the rib. The joint hardware guide device for a pile foundation according to claim 1, wherein the pair of opposing plates are fixed at positions sandwiching the vertical edge from both sides.   3. The pile foundation joint according to claim 1, wherein the elongated body is a chevron-shaped cross-section steel material, and the positioning pins are provided on the vertical side portion thereof, or the pair of plates are fixed. Hardware guide device. 5. The position adjustment means for the joint hardware can be adjusted in two horizontal directions of the X-axis direction and the Y-axis direction, and a vertical Z direction. 6. Bonding hardware guide device for pile foundation.

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