JP7406358B2 - Bonding structure and bonding method - Google Patents

Description

The present invention relates to a joining structure and a joining method for joining a pile and a column to each other.

There is a joint structure in which a superstructure such as a steel column is supported on piles buried in the ground (see Patent Document 1). In such a joint structure, a sheath pipe is placed around the pile cap, and the space between the sheath pipe and the pile and the space between the top plate of the sheath pipe and the base plate of the steel column are filled with concrete. Steel columns are indirectly connected.

Japanese Patent Application Publication No. 2014-169577

However, in the case of the above-mentioned joint structure, a work process of filling and solidifying concrete between the piles and columns is required, which increases the work time. In particular, when using the above-mentioned joint structure to erect electrification poles that support railway overhead lines along railroad tracks, it is necessary to join many steel columns to the piles, which significantly increases the work time. increase. Therefore, a joining structure that can join piles and columns with a simpler work process is desired.

Therefore, for example, it may be possible to directly connect piles and columns without using concrete. However, when piles are driven into the ground and buried, they may tilt with respect to the vertical direction. In this case, if you connect a column directly to the pile, the tilt of the pile will be the same as the tilt of the column. This becomes a problem.

The present invention has been made in view of the above points, and one of its purposes is to provide a joint structure and a joint method that can be constructed with a simpler work process and that can correct the inclination of a column with respect to a pile. do.

As a result of extensive studies, the present inventors have found that the above problem can be solved by interposing a plate having upper and lower flat end surfaces that are inclined to each other between the pile and the column, and have completed the present invention.

That is, the present invention includes the following aspects.
(1) A joint structure for joining a pile and a column to each other, comprising a plate interposed between the pile and the column, the plate having upper and lower flat end surfaces that are inclined to each other, the pile, Each of the plate and the pillar has a through hole penetrating up and down, and the pile, the plate, and the pillar are joined to each other by a fastening body inserted into each of the through holes, and the through hole of the plate The position of the joint is set at a position that matches the through hole of the pile when the plate is placed on the top surface of the pile driven into the ground so that the upper flat end surface is horizontal. structure.
(2) The angle of inclination formed by the two upper and lower flat end surfaces of the plate is determined based on the result of measuring the inclination of the upper surface of the pile driven into the ground with respect to the horizontal. Joint structure.
(3) A joint structure for joining a pile and a column to each other, comprising a plate interposed between the pile and the column, the plate having upper and lower flat end surfaces that are inclined to each other, the pile, Each of the plate and the pillar has a through hole that passes through the top and bottom, and the pile, the plate, and the pillar are joined to each other by a fastening body inserted into the respective through hole, and the top and bottom of the plate are A joint structure in which the angle of inclination between the two flat end faces is determined based on the result of measuring the inclination of the upper surface of the pile driven into the ground with respect to the horizontal.
(4) The joint structure according to (3), wherein the position of the through hole of the plate is determined based on the result of measuring the position of the through hole of the pile driven into the ground.
(5) A joining method for joining a pile and a column to each other, which includes a step of driving the pile into the ground, a step of placing a plate whose upper and lower flat end surfaces are inclined to each other on the top surface of the pile, a step of adjusting the orientation of the plate so that the upper flat end surface of the plate is horizontal; a step of forming a through hole penetrating vertically at a position matching the through hole of the pile of the plate; A joining method comprising the step of joining a plate and the pillar to each other using a fastening body inserted into each through hole.
(6) a step of measuring the inclination of the top surface of the pile driven into the ground with respect to the horizontal; and a step of forming a plate whose upper and lower flat end surfaces are inclined to each other based on the measurement result of the inclination of the top surface of the pile. The joining method according to (5), further comprising:
(7) A joining method for joining a pile and a column to each other, which includes a step of driving the pile into the ground, a step of measuring the inclination of the top surface of the pile with respect to the horizontal, and a measurement result of the inclination of the top surface of the pile. a step of forming a plate having upper and lower flat end surfaces that are inclined to each other based on the method; a step of placing the plate on the top surface of the pile so that the upper flat end surface is horizontal; and a step of joining the pillars to each other with a fastening body inserted into each through hole.
(8) further comprising: measuring the position of the through hole of the pile driven into the ground; and forming the through hole of the plate based on the measurement result of the position of the through hole of the pile. The joining method described in (7).
Note that "horizontal" in this specification refers to a state having an inclination gradient of 1/500 or less.

According to the present invention, it is possible to provide a joining structure and a joining method that can be constructed with a simpler work process and that can correct the inclination of a column with respect to a pile.

It is an explanatory view of a longitudinal cross section for explaining the composition of a joint structure. It is an explanatory view showing an example of the composition of a steel pipe pile. It is an explanatory view showing an example of the composition of a steel frame column. It is a perspective view of a plate. It is a top view of a plate. It is a side view of a plate. It is a longitudinal cross-sectional view of a plate. FIG. 3 is a flow diagram showing the main steps of the joining method in the first embodiment. FIG. 3 is a perspective view showing a plate in which no through holes are formed. It is an explanatory view showing a state where a plate is placed on a steel pipe pile driven into the ground. FIG. 7 is a flow diagram showing the main steps of a joining method in a second embodiment. It is an explanatory view showing a state where steel pipe piles are driven into the ground.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Note that the same elements are given the same reference numerals and redundant explanations will be omitted. In addition, the positional relationships such as top, bottom, left, and right are based on the positional relationships shown in the drawings unless otherwise specified. Furthermore, the dimensional ratios in the drawings are not limited to the illustrated ratios.

(First embodiment)
FIG. 1 is an explanatory diagram of a longitudinal section showing an example of a joining structure 1 according to the present embodiment. For example, the joint structure 1 mainly includes a steel pipe pile 10, a steel column 11, and a plate 12.

As shown in FIGS. 1 and 2, the steel pipe pile 10 is, for example, a circular pipe, and has a thick annular flange 20 at its upper end. The flange 20 has a flat end surface 21 on its upper surface. A plurality of through holes 22 are formed in the flange 20 at equal intervals along the circumferential direction. The through hole 22 penetrates the flange 20 in the thickness direction (vertical direction). The steel pipe pile 10 shown in FIG. 1 is driven at an angle with respect to the ground A, and the flat end surface 21 of the flange 20 is inclined with respect to the horizontal H1 (there is an inclination α1).

As shown in FIGS. 1 and 3, the steel column 11 is, for example, a circular tube, and has a thick annular flange 30 at its lower end. The flange 30 has a flat end surface 31 on its lower surface. For example, the size (diameter) of the flat end surface 31 of the flange 30 is approximately equal to the size of the flat end surface 21 of the flange 20 of the steel pipe pile 10. A plurality of through holes 32 are formed in the flange 30 at equal intervals along the circumferential direction. The through hole 32 penetrates the flange 30 in the thickness direction (vertical direction). The through holes 32 are the same in number as the through holes 22 of the steel pipe pile 10 and are provided at positions corresponding to the through holes 22 of the steel pipe pile 10.

As shown in FIG. 1, the plate 12 is interposed between the flange 20 of the steel pipe pile 10 and the flange 30 of the steel column 11. 4 is a perspective view of the plate 12, FIG. 5 is a top or bottom view of the plate 12, and FIG. 6 is a side view of one side of the plate 12. FIG. 7 is a sectional view taken along line XX of the plate 12 shown in FIG.

As shown in FIGS. 4 and 5, the plate 12 has a thick annular shape. The size (diameter) of the plate 12 is approximately equal to the size of the flanges 20 and 30, for example. The plate 12 has a hole 40 opening in the center. The hole 40 has a diameter equal to or smaller than the inner diameter of the circular pipes of the steel pipe pile 10 and the steel column 11.

The plate 12 has a first flat end surface 50 and a second flat end surface 51 on the upper and lower surfaces. As shown in FIG. 6, the first flat end surface 50 and the second flat end surface 51 are inclined to each other. That is, the plate 12 is configured so that its thickness gradually increases in a specific diameter direction. For example, as shown in FIG. 7, the first flat end surface 50 is perpendicular to the axis P1 of the plate 12, and the second flat end surface 51 has a predetermined inclination angle (inclination gradient) with respect to the first flat end surface 50. It is tilted at θ1. Note that the axis P1 of the plate 12 is a line passing through the center of the plate 12 and parallel to the outer peripheral end surface of the plate 12. As shown in FIG. 1, the plate 12 is placed on the upper flat end surface 21 of the steel pipe pile 10 so that the upper surface, for example, the second flat end surface 51, is horizontal.

As shown in FIGS. 4 and 5, a plurality of through holes 52 are formed in the plate 12 at equal intervals along the circumferential direction. As shown in FIG. 7, the through hole 52 penetrates the plate 12 in the thickness direction (vertical direction, axis P1 direction) from the first flat end surface 50 to the second flat end surface 51. The through holes 52 are formed in the same number and at the same intervals as the through holes 22 of the steel pipe pile 10 and the through holes 32 of the steel column 11.

The position of the through hole 52 of the plate 12 is determined after the steel pipe pile 10 is driven into the ground A, and the upper flat end face 51 of the plate 12 is placed on the flat end face 21 of the steel pipe pile 10 driven into the ground A. It is set at a position that matches the through hole 22 of the steel pipe pile 10 when it is placed horizontally.

The material of the plate 12 is not particularly limited, but the material of the plate 12 may be steel, aluminum, carbon, or the like. The material of the plate 12 may be different from that of the steel pipe pile 10, or may be the same material as the steel pipe pile 10.

As shown in FIG. 1, bolts 60 as fasteners are inserted into the through holes 22 of the steel pipe pile 10, the through holes 52 of the plate 12, and the through holes 32 of the steel column 11, and the steel pipe pile 10, the plate 12, and the steel column 11 are inserted. They are bolted together.

Next, an example of a joining method for joining the steel pipe pile 10 and the steel column 11 to each other when constructing the joining structure 1 will be described. FIG. 8 shows the main steps of this joining method. A plurality of plates 12 having different inclination angles θ1 and having no through holes 52 as shown in FIG. 9 are prepared in advance in a plate set. The inclination angle θ1 of each plate 12 is set to an inclination gradient of, for example, 1/500 or more and 1/50 or less, preferably 1/500 or more and 1/100 or less.

First, as shown in FIG. 10, the steel pipe pile 10 is driven into the ground A (step S1 in FIG. 8). Next, if the flat end surface 21 of the flange 20 of the steel pipe pile 10 is inclined with respect to the horizontal H1 (if there is an inclination α1), the plate 12 is placed on the flat end surface 21 of the flange 20 (FIG. Step S2). At this time, a plate 12 having an inclination angle θ1 that can absorb the inclination α1 of the flat end surface 21 of the flange 20 is selected from the plate set. At this time, the inclination α1 of the flat end surface 21 of the flange 20 may be measured using a known angle measuring level, an autolevel, etc., and the plate 12 may be selected based on the measurement result.

Next, as shown in FIG. 10, the plate 12 is rotated around the axis P1, and the orientation of the plate 12 is adjusted so that the second flat end surface 51, which is the upper surface of the plate 12, is horizontal (FIG. Step S3). That is, by adjusting the plate 12 to the optimum orientation, the inclination α1 of the steel pipe pile 10 is absorbed by the inclination angle θ1 of the upper and lower surfaces of the plate 12, and the second flat end surface 51 of the upper surface of the plate 12 becomes horizontal. .

Next, as shown in FIG. 1, a vertically penetrating through hole 52 is formed at a position matching the through hole 22 of the steel pipe pile 10 of the plate 12 (step S4 in FIG. 8). In other words, the position of the through hole 52 of the plate 12 is determined after the steel pipe pile 10 is driven into the ground A, and the plate 12 is placed on the flat end surface 21 of the steel pipe pile 10 driven into the ground A. It is set at a position that matches the through hole 22 of the steel pipe pile 10 when the end surface 51 is placed horizontally.

Next, as shown in FIG. 1, the steel column 11 is placed on the second flat end surface 51 of the upper surface of the plate 12 with the flange 30 facing down. At this time, since the second flat end surface 51 is horizontal, the steel column 11 is erected vertically.

The position of the through hole 32 of the flange 30 of the steel column 11 is aligned with the position of the through hole 52 of the plate 12 and the through hole 22 of the steel pipe pile 10, and in this state, the bolt 60 is inserted into the through hole 22, 52, 32. , the steel pipe pile 10, the plate 12, and the steel column 11 are bolted (step S5 in FIG. 8).

According to this embodiment, by interposing the plate 12 having the first flat end surface 50 and the second flat end surface 51 that are mutually inclined between the steel pipe pile 10 and the steel column 11, the inclination of the steel pipe pile 10 can be reduced. By absorbing and correcting α1, the steel column 11 can be erected vertically. Therefore, it is possible to realize a joint structure 1 that can be constructed with a simpler work process than in the case of filling with concrete, and can correct the inclination of the steel column 11 with respect to the steel pipe pile 10.

Further, according to the present embodiment, the position of the through hole 52 of the plate 12 is determined after the steel pipe pile 10 is driven into the ground A, and the plate 12 is placed on the upper flat end surface 51 of the steel pipe pile 10. The steel pipe pile 10 is placed at a position that matches the through hole 22 of the steel pipe pile 10 when it is placed horizontally. Therefore, depending on the actual inclination α1 of the steel pipe pile 10, the orientation of the plate 12 can be determined at the optimum position where the upper surface is horizontal, and the inclination of the steel column 11 with respect to the steel pipe pile 10 can be sufficiently and reliably corrected. be able to.

Further, according to the joining method of the present embodiment, the plate 12 is placed on the upper surface of the steel pipe pile 10 driven into the ground A, and the plate 12 is placed so that the upper flat end surface 51 of the plate 12 is horizontal. The orientation is adjusted and the through holes 52 are formed in the positions of the plates 12 that match the through holes 22 of the steel pipe piles 10, so that the orientation of the plates 12 is optimally adjusted so that the upper surface is horizontal, depending on the actual inclination α1 of the steel pipe piles 10. Therefore, the inclination of the steel column 11 with respect to the steel pipe pile 10 can be sufficiently and reliably corrected.

In the joint structure 1 of the embodiment described above, the inclination angle θ1 formed by the two flat end surfaces 50 and 51 of the plate 12 is based on the result of measuring the inclination α1 of the upper surface of the steel pipe pile 10 driven in the ground A with respect to the horizontal. may be specified. In addition, in the joining method of the above embodiment, after the steel pipe pile 10 is driven into the ground A, the inclination α1 of the flat end surface 21, which is the upper surface of the steel pipe pile 10, with respect to the horizontal is measured, and the inclination α1 of the steel pipe pile 10 is measured. Based on the measurement results, a plate 12 may be formed in which the upper and lower flat end surfaces 50 and 51 are mutually inclined. In this case, the plate 12 is formed so that the angle of inclination θ1 formed by the flat end surfaces 50 and 51 is the same as the angle of the inclination α1. Note that the through holes 52 of the plate 12 are not formed at this point, but are formed after the plate 12 is placed on the steel pipe pile 10 driven into the ground A as in the above embodiment.

According to this example, the slopes of the flat end surfaces 50 and 51 of the plate 12 are formed based on the measurement result of the slope α1 of the steel pipe pile 10, so that the flat end surface 51 of the upper surface of the plate 12 on the steel pipe pile 10 is sufficiently and It can be reliably leveled, and as a result, the inclination of the steel column 11 with respect to the steel pipe pile 10 can be sufficiently corrected.

(Second embodiment)
In the joint structure 1 in the second embodiment, the inclination angle θ1 formed by the two upper and lower flat end surfaces 50 and 51 of the plate 12 measures the inclination α1 with respect to the horizontal of the upper surface of the steel pipe pile 10 driven in the ground A. and the point where the position of the through hole 52 of the plate 12 is determined based on the result of measuring the position of the through hole 22 of the steel pipe pile 10 driven in the ground A. This is different from the first embodiment. Note that the other configurations of the joining structure 1 are the same as those in the first embodiment, and the same reference numerals are used to omit the explanation.

Next, an example of a joining method for joining the steel pipe pile 10 and the steel column 11 to each other when constructing the joint structure 1 of this embodiment will be described. FIG. 11 shows the main steps of this joining method. First, as shown in FIG. 12, the steel pipe pile 10 is driven into the ground A (step T1 in FIG. 11). Next, the inclination α1 of the flat end surface 21 of the flange 20, which is the upper surface of the steel pipe pile 10, with respect to the horizontal is measured (step T2 in FIG. 11). This inclination α1 is measured by a known technique such as an angle measuring level, an autolevel, etc. Moreover, at this time, the position of the through hole 22 of the steel pipe pile 10 is also measured.

Next, based on the measurement result of the inclination α1 of the flat end surface 21 of the steel pipe pile 10 and the measurement result of the position of the through hole 22 of the steel pipe pile 10, the upper and lower flat end surfaces 50, 51 that are inclined to each other and the vertically penetrating A plate 12 having holes 52 is formed (step T3 in FIG. 11). For example, when the plate 12 is placed on the steel pipe pile 10 in such a direction that the inclination angle θ1 formed by the flat end faces 50 and 51 is the same as the inclination α1, and the upper flat end face 51 is horizontal. In this case, the position of the through hole 52 is formed to match the position of the through hole 22 of the steel pipe pile 10.

Next, as shown in FIG. 10, the plate 12 is placed on the flat end surface 21 of the steel pipe pile 10 so that the upper side, for example, the second flat end surface 51, is horizontal (step T4 in FIG. 11).

Next, as shown in FIG. 1, the steel column 11 is placed on the second flat end surface 51 of the upper surface of the plate 12 with the flange 30 facing down. Next, the position of the through hole 32 of the flange 30 of the steel column 11 is aligned with the position of the through hole 52 of the plate 12 and the through hole 22 of the steel pipe pile 10, and in this state, the bolt 60 is inserted into the through hole 22, 52, 30. and the steel pipe pile 10, plate 12, and steel column 11 are bolted (step T5 in FIG. 11).

According to the joint structure 1 of the present embodiment, the inclination angle θ1 formed by the two upper and lower flat end surfaces 50 and 51 of the plate 12 is determined by measuring the inclination α1 of the upper surface of the steel pipe pile 10 driven in the ground A with respect to the horizontal. It is determined based on the results. Therefore, the flat end surface 51 of the upper surface of the plate 12 on the steel pipe pile 10 can be sufficiently and reliably leveled, and as a result, the inclination of the steel column 11 with respect to the steel pipe pile 10 can be sufficiently corrected.

According to the joint structure 1 of this embodiment, the position of the through hole 22 of the plate 12 is determined based on the result of measuring the position of the through hole 22 of the steel pipe pile 10 driven into the ground A. Thereby, the through hole 52 of the plate 12 can be accurately aligned with the position of the through hole 22 of the actual steel pipe pile 10.

According to the joining method of this embodiment, the inclination α1 of the flat end surface 21 of the upper surface of the steel pipe pile 10 driven in the ground A is measured, and based on the measurement result of the inclination α1 of the steel pipe pile 10, A plate 12 having upper and lower flat end surfaces 50, 51 and a through hole 52 is formed, and the plate 12 is placed on the steel pipe pile 10 so that the upper flat end surface 51 is horizontal. Therefore, the flat end surface 51 of the upper surface of the plate 12 on the steel pipe pile 10 can be sufficiently and reliably leveled, and the inclination of the steel column 11 with respect to the steel pipe pile 10 can be sufficiently corrected.

The joining method of this embodiment includes a step of measuring the position of the through hole 22 of the steel pipe pile 10 driven in the ground A, and a step of measuring the position of the through hole 22 of the steel pipe pile 10, and a step of measuring the position of the through hole 22 of the steel pipe pile 10. This includes a step of forming holes 52. Thereby, the through hole 52 of the plate 12 can be accurately aligned with the position of the through hole 22 of the actual steel pipe pile 10.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to such examples. It is clear that those skilled in the art can come up with various changes or modifications within the scope of the idea described in the claims, and these naturally fall within the technical scope of the present invention. It is understood that

For example, the configuration of the joining structure 1 is not limited to that of the above embodiment. For example, the piles are not limited to the steel pipe piles 10, and the columns are not limited to the steel columns 11. The plate 12 is not limited to that of the above embodiment. The plate may be disc-shaped without holes 40. The outer shape of the plate 12 is not limited to a circle, but may be a polygon. The number of plates in the joint structure 1 is not limited to one, and a plurality of plates may be stacked and provided between the pile and the column.

INDUSTRIAL APPLICATION This invention is useful in providing the joint structure which can be constructed by a simpler work process, and can correct the inclination of the column with respect to the pile.

1 Joint structure 10 Steel pipe pile 11 Steel column 12 Plate 20 Flange 21 Flat end face 22 Through hole 30 Flange 32 Through hole 50 First flat end face 51 Second flat end face 52 Through hole 60 Bolt α1 Inclination θ1 Inclination angle

Claims (3)

A joint structure that connects piles and columns to each other,
comprising a plate interposed between the pile and the pillar,
The plate has upper and lower flat end surfaces that are inclined to each other,
Each of the pile, the plate, and the pillar has a through hole that passes through it vertically,
The pile, the plate, and the pillar are joined to each other by a fastening body inserted into each of the through holes,
The position of the through hole of the plate is determined to be a position that matches the through hole of the pile when the plate is placed on the upper surface of the pile driven into the ground so that the upper flat end surface is horizontal. is,
The angle of inclination formed by the two upper and lower flat end surfaces of the plate is determined based on the result of measuring the inclination of the upper surface of the pile driven into the ground with respect to the horizontal,
The position of the through hole of the plate is determined based on the result of measuring the position of the through hole of the pile driven into the ground . The pile and the pillar have flanges that protrude outward from the circular pipes of the pile and the pillar,
The joint structure according to claim 1, wherein the through hole of the pile and the pillar is provided in the flange. A joining method for joining a pile and a column to each other,
Driving the pile into the ground;
Measuring the inclination of the top surface of the pile with respect to the horizontal;
Measuring the position of the through hole of the pile driven into the ground;
Based on the measurement results of the inclination of the top surface of the pile, form a plate having upper and lower flat end surfaces that are inclined to each other , and form the through holes of the plate based on the measurement results of the positions of the through holes of the piles. The process of
placing the plate on the top surface of the pile so that the upper flat end surface is horizontal;
A joining method comprising the step of joining the pile, the plate, and the pillar to each other using a fastening body inserted into each through hole.