Connection method between pile and column-beam connection assembly body, and connection structure between pile and column-beam connection assembly body

Abstract

To provide a connection method between a pile 30 and a column-beam connection assembly body 10 capable of suppressing construction cost while being capable of coping with change in embedded depth of the pile 30.SOLUTION: A connection method between a pile 30 and a column-beam connection assembly body 10 comprises: preparing the column-beam connection assembly body 10; installing a second steel pipe 20 while surrounding a pile head 32 of the pile 30 and adjusting embedded depth of the pile head 32; installing the column-beam connection assembly body 10 at a specific position such that a lower part 163 of the first steel pipe 16 penetrates inside of the second steel pipe 20 and an outer peripheral surface 164 of the lower part 163 contacts an inner peripheral surface 21 of the second steel pipe 20 to connect the first steel pipe 16 and the second steel pipe 20 in a state it is installed at the specific position to integrate the pile head 32 and the column-beam connection assembly body 10 by filling curable filler 22 inside of the second steel pipe 20 placed inside of the first steel pipe 16 and further below a lower end of the first steel pipe 16.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a joining method for a pile-to-beam joint assembly used in the foundation of a building or the like, and to a joining structure for a pile-to-beam joint assembly. [Background technology]

[0002] As a steel foundation construction method, there is a building in which a foundation beam is constructed on top of piles via a footing. The construction of the footing has generally been done using reinforced concrete, in which reinforcement is arranged on-site, formwork is set up, and concrete is poured into the footing. However, in recent years, many joint structures between piles and foundation beams have been proposed, such as that disclosed in Patent Document 1.

[0003] The joint structure of Patent Document 1 involves placing steel pipes, which are pre-joined to steel columns and foundation beams, around the pile heads, and then filling the steel pipes with concrete to create a footing. The joint structure of Patent Document 1 eliminates the need for rebar placement work for the footing at the construction site, as well as temporary installation and removal of formwork, and is expected to significantly reduce the number of people required for foundation work and shorten construction times. Furthermore, by using a footing in which concrete is filled inside the steel pipe, this joint structure excels in horizontal resistance to forces acting on buildings during earthquakes and other events. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 7-26568 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the steel pipes of Patent Document 1, the columns and foundation beams are manufactured in advance at a steel frame factory as a single unit, so if the piles are displaced vertically due to construction errors, the embedment depth of the piles between the pile head and the footing will change, making it difficult to design a structure that takes changes in embedment depth into account.

[0006] Therefore, an object of the present invention is to provide a method for joining a pile and a post-beam joint assembly and a joining structure for a pile and a post-beam joint assembly that can accommodate changes in embedment depth. [Means for solving the problem]

[0007] The present invention has been made to solve at least some of the above-mentioned problems, and can be realized as the following aspects or application examples.

[0008] [1] One aspect of the method for joining a pile and a beam-column joint assembly according to the present invention is as follows: preparing a beam-column connection assembly including a first steel pipe opening downward and a steel beam bracket extending horizontally from the first steel pipe and joined to a foundation beam; A second steel pipe is installed while surrounding the pile head and adjusting the embedment depth of the pile head. The beam-column connection assembly is installed at a predetermined position so that the lower portion of the first steel pipe enters the inside of the second steel pipe and the outer peripheral surface of the lower portion contacts the inner peripheral surface of the second steel pipe; In the state where the pipe is installed in the predetermined position, the first steel pipe and the second steel pipe are joined together, The pile head and the beam-column joint assembly are integrated by filling a hardenable filler inside the first steel pipe and inside the second steel pipe below the lower end of the first steel pipe.

[0009] [2] In one aspect of the above-mentioned method for joining a pile and a beam-column joint assembly, The outer peripheral surface of the first steel pipe and the upper end of the second steel pipe can be joined by welding.

[0010] [3] One aspect of the method for joining a pile and a beam-column joint assembly according to the present invention is as follows: preparing a beam-column connection assembly including a first steel pipe opening downward and a steel beam bracket extending horizontally from the first steel pipe and joined to a foundation beam; The second steel pipe is joined to the first steel pipe in accordance with the measured height of the pile head. The column-beam connection assembly is installed so that the second steel pipe surrounds the pile head, A hardenable filler is filled inside the first steel pipe and inside the second steel pipe below the lower end of the first steel pipe to integrate the pile head and the beam-column joint assembly, The joining of the first steel pipe and the second steel pipe is performed in a state in which the lower part of the first steel pipe is inserted into the inside of the second steel pipe and the outer surface of the lower part is in contact with the inner surface of the second steel pipe.

[0011] [4] In one aspect of the above-mentioned method for joining a pile and a beam-column joint assembly, In the joining method of a pile and a beam-column joint assembly according to claim 3, The outer circumferential surface of the first steel pipe and the upper end of the second steel pipe are joined by welding, The lower end of the first steel pipe and the inner peripheral surface of the second steel pipe can be joined by welding.

[0012] [5] One aspect of the joint structure of the pile and column beam joint assembly according to the present invention is as follows: a beam-column connection assembly including a first steel pipe that opens downward and a steel beam bracket that extends horizontally from the first steel pipe and is joined to a foundation beam; A second steel pipe that overlaps at least a portion of the first steel pipe in the height direction and at least a portion of the pile head in the height direction; a joint portion that joins the first steel pipe and the second steel pipe in a state where the outer peripheral surface of the first steel pipe and the inner peripheral surface of the second steel pipe are in contact with each other; a hardenable filler filled inside the first steel pipe and inside the second steel pipe located below the lower end of the first steel pipe; The present invention is characterized by comprising: [Effects of the Invention]

[0013] According to one aspect of the joining method for a pile and a beam-column joint assembly and one aspect of the joining structure for a pile and a beam-column joint assembly of the present invention, the second steel pipe can accommodate changes in the embedded depth of the pile head. [Brief explanation of the drawings]

[0014] [Figure 1]FIG. 2 is a vertical cross-sectional view of the joining structure according to the present embodiment. [Figure 2] FIG. 1 is a perspective view of a joining structure according to an embodiment of the present invention. [Figure 3] 1A to 1C are diagrams illustrating a joining method according to the present embodiment. [Figure 4] 1A to 1C are diagrams illustrating a joining method according to the present embodiment. [Figure 5] 10A and 10B are diagrams illustrating a joining method according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0015] Preferred embodiments of the present invention will be described in detail below with reference to the drawings. Note that the embodiments described below do not unduly limit the content of the present invention as defined in the claims. Furthermore, not all of the configurations described below are necessarily essential components of the present invention.

[0016] One aspect of the method for joining a pile and a beam-column connection assembly according to this embodiment is to prepare a beam-column connection assembly including a first steel pipe that opens downward and a steel beam bracket that extends horizontally from the first steel pipe and is joined to a foundation beam, install a second steel pipe that surrounds the head of the pile while adjusting the embedment depth of the head, and position the beam-column connection assembly in a predetermined position so that the lower part of the first steel pipe enters the inside of the second steel pipe and the outer circumferential surface of the lower part contacts the inner circumferential surface of the second steel pipe. In this case, the pile head is installed in a predetermined position, and while installed in the predetermined position, the first steel pipe and the second steel pipe are joined, and a hardenable filler is filled inside the first steel pipe and inside the second steel pipe below the lower end of the first steel pipe, thereby integrating the pile head and the beam-column joint assembly.

[0017] Furthermore, one aspect of the joining structure of the pile and beam-column joint assembly according to this embodiment is characterized by comprising: a beam-column joint assembly including a first steel pipe that opens downward and a steel beam bracket that extends horizontally from the first steel pipe and is joined to a foundation beam; a second steel pipe that overlaps at least a portion of the first steel pipe in the height direction and also overlaps at least a portion of the pile head in the height direction; a joint that joins the first steel pipe and the second steel pipe with the outer peripheral surface of the first steel pipe in contact with the inner peripheral surface of the second steel pipe; and a hardenable filler filled inside the first steel pipe and inside the second steel pipe that is below the lower end of the first steel pipe.

[0018] 1.Joint structure A joint structure (hereinafter referred to as "joint structure 1") between a pile 30 and a beam-column joint assembly 10 according to one embodiment of the present invention will be described using Figures 1 and 2. Figure 1 is a vertical cross-sectional view of the joint structure 1 according to this embodiment, and Figure 2 is a perspective view of the joint structure 1 according to this embodiment. Note that the level concrete 40 and the ground below it are omitted in Figure 2.

[0019] As shown in Figures 1 and 2, the joint structure 1 comprises a column-beam joint assembly 10 joined to the pile head 32 of the pile 30 via a hardenable filler 22, a second steel pipe 20, a joint 24 joining the first steel pipe 16 of the column-beam joint assembly 10 to the second steel pipe 20, and the hardenable filler 22.

[0020] The joint structure 1 can be used, for example, in the foundation structure of a building whose superstructure is made of steel and supported by pile foundations. The superstructure is not limited to steel construction, but can be made of aluminum, wood, or a composite structure of steel and wood. Such buildings include, for example, medium- to low-rise buildings with relatively large floor areas that require a short construction period, and specifically, can be used in medium-sized commercial facilities, offices, apartment buildings, etc.

[0021] The pile 30 is a columnar structural member buried in the ground to transmit the load of a structure to the ground. In terms of material, the pile 30 can be made of, for example, reinforced concrete piles or steel pipe piles. In terms of construction, the pile 30 can be made of, for example, driven piles, cast-in-place piles, or buried piles. The top of the pile 30 is the pile cap 32, which protrudes from the ground surface, for example, level concrete 40. If the planar position of the pile 30 or the height Hc (pile cap level) of the pile cap 32 is not constructed according to design, slight construction errors may occur.

[0022] The beam-column connection assembly 10 comprises a first steel pipe 16 that opens downward and a steel beam bracket 14 that extends horizontally from the first steel pipe 16 and is joined to a foundation beam (not shown). The beam-column connection assembly 10 comprises a column 12 in which the beam bracket 14 and the first steel pipe 16 are integrally formed. The starting end of the beam bracket 14 is integrally formed with the column 12, and the beam bracket 14 extends horizontally from the column 12 beyond an upper steel pipe 160. The column 12 is located at the center of the upper steel pipe 160, extends the height of the upper steel pipe 160, and further extends above the upper steel pipe 160. The interior of the column 12 is filled with a hardenable filler material 120. The beam-column connection assembly 10 is fabricated as a single unit in advance, for example, at a steel frame factory, and then brought to the construction site. Therefore, when a beam-column joint assembly 10 manufactured according to design is constructed on a pile 30 that has eccentricity or vertical misalignment due to construction errors, the edge clearance dimension between the pile head 32 and the first steel pipe 16 and the embedded depth of the pile 30 may not be as designed.

[0023] The beam brackets 14 are steel frames that extend horizontally outward from the first steel pipes 16 and have their free ends joined to foundation beams (not shown). In this embodiment, there are four beam brackets 14, but one or more may be used depending on the shape of the foundation beam. The beam brackets 14 are, for example, H-shaped steel.

[0024] The first steel pipe 16 is, for example, a cylindrical steel pipe centered on the column 12. The first steel pipe 16 is not limited to a cylindrical shape, and may be any tubular shape that allows the hardenable filler 22 (described later) to be filled inside the steel pipe, such as a rectangular or other polygonal tubular shape. The first steel pipe 16 may also be provided with a lid covering the top surface if it has an opening for pouring the hardenable filler 22. The hardenable filler 22 is filled inside the first steel pipe 16 to form a footing that supports the column 12 and the beam on the pile head 32. The hardenable filler 22 may be connected to the pile head 32 via a known connecting member, such as an FT Cap (registered trademark), provided on the pile head 32. The first steel pipe 16 includes an upper steel pipe 160 on the upper side and a lower steel pipe 162 that protrudes downward from the lower end of the beam bracket 14 and continues downward from the upper steel pipe 160. The upper steel pipe 160 and the lower steel pipe 162 are described as two separate steel pipes for the purpose of explaining their positional relationship with other members, but they are in fact one piece. The first steel pipe 16 may be provided with a shear key, such as a headed stud, that protrudes inward from its inner circumferential surface in order to improve its unity with the hardenable filler 22.

[0025] The upper steel pipe 160 has four notches through which the beam brackets 14 are passed, and steel plate ribs are welded to fill the notches, forming a roughly cylindrical outer shape. The height of the upper steel pipe 160 and the height of the beam brackets 14 are the same.

[0026] The lower steel pipe 162 has a generally cylindrical shape whose upper end is continuous with the lower end of the upper steel pipe 160 and whose lower end is open. The opening diameter of the lower steel pipe 162 is larger than the pile diameter of the pile head 32. The pile head 32 is positioned inside the lower steel pipe 162 at least in plan view as shown in Figure 2. The height Ha of the lower steel pipe 162 is the height that protrudes downward from the lower end of the beam bracket 14.

[0027] The second steel pipe 20 is, for example, a substantially cylindrical steel pipe with an inner diameter equal to or slightly larger than the outer diameter of the first steel pipe 16, and is arranged around the lower steel pipe 162. The second steel pipe 20 is not limited to a cylindrical shape, and may be any tubular shape that allows the hardenable filler 22, described later, to be filled inside the steel pipe, such as a square tubular shape or other polygonal tubular shape. The second steel pipe 20 has a wall thickness that is thicker than that of the first steel pipe 16, for example.

[0028] The second steel pipe 20 at least partially overlaps the first steel pipe 16 in the height direction and also at least partially overlaps the pile cap 32 of the pile 30 in the height direction. By at least partially overlapping the first steel pipe 16 in the height direction, the lower part 163 of the first steel pipe 16 can be reinforced. By at least partially overlapping the second steel pipe 20 with the pile cap 32 in the height direction, the necessary embedment depth can be ensured even if the pile 30 is low due to construction errors. The height Hb of the second steel pipe 20 is preferably set to absorb expected vertical construction errors of the pile 30 and achieve an embedment depth that satisfies the design tolerance. For example, even if the pile cap 32 is constructed lower than the design position (the position of the pile 30 indicated by the dashed line in FIG. 1 ) and its embedment depth relative to the lower steel pipe 162 is small or nonexistent, the embedment depth of the pile cap 32 relative to the second steel pipe 20 can be kept within the design tolerance by positioning the second steel pipe 20 at a position lower than the lower steel pipe 162. According to the joint structure 1, the second steel pipe 20 can flexibly accommodate changes in the embedment depth of the pile head 32.

[0029] The joint 24 joins the first steel pipe 16 and the second steel pipe 20 in a state where the outer peripheral surface 164 of the first steel pipe 16 and the inner peripheral surface 21 of the second steel pipe 20 are in contact. In FIG. 1 , the outer peripheral surface 164 of the lower part 163 of the lower steel pipe 162, which overlaps the second steel pipe 20 in the height direction, is in contact with the inner peripheral surface 21 of the second steel pipe 20. To reinforce the footing lower part, it is desirable that the entire outer peripheral surface 164 of the lower part 163 be in contact with the inner peripheral surface 21, but in consideration of workability when inserting the lower part 163 into the second steel pipe 20, there may be a small gap in the circumferential direction. Furthermore, the second steel pipe 20 may be composed of multiple arc-shaped parts divided in the circumferential direction. In this case, the outer peripheral surface 164 is formed by joining the parts together, for example by welding, with the lower part 163 placed inside the second steel pipe 20. and the inner peripheral surface 21 may be in close contact with each other. By overlapping the first steel pipe 16 and the second steel pipe 20 in the height direction with the outer peripheral surface 164 and the inner peripheral surface 21 in contact, the lower part of the footing where the bearing pressure from the pile 30 is greatest can be reinforced by the second steel pipe 20.

[0030] The joint 24 can be formed, for example, by welding the outer circumferential surface 164 of the first steel pipe 16 to the upper end of the second steel pipe 20. The joint 24 integrates the first steel pipe 16 and the second steel pipe 20 into a single steel pipe, which makes it possible to absorb construction errors in the vertical direction of the pile 30.

[0031] The hardenable filler 22 is filled inside the first steel pipe 16 and inside the second steel pipe 20 located below the lower end of the first steel pipe 16. A hardenable filler that has fluidity when filled inside the steel pipe and hardens to become integrated with the steel pipe after filling can be used as the hardenable filler 22. Examples of such hardenable fillers that can be used include cement-based fillers such as concrete and mortar, and synthetic resin-based fillers such as epoxy resin and acrylic resin. In this embodiment, it is preferable to use concrete as the hardenable filler 120 and the hardenable filler 22 in terms of strength and cost.

[0032] The height Hb of the second steel pipe 20 is lower than, for example, the height Ha of the lower steel pipe 162. By keeping the height Hb of the second steel pipe 20 low, it is possible to ensure space for an EV pit and the like.

[0033] 2.Joining method A method for joining a pile 30 and a beam-post joint assembly 10 according to this embodiment (hereinafter referred to as "joining method") will be described with reference to Figures 1 to 4. Figures 3 and 4 are diagrams for explaining the joining method according to this embodiment.

[0034] The joining method includes the steps of preparing a beam-column joint assembly 10, installing a second steel pipe 20, installing the beam-column joint assembly 10, joining the first steel pipe 16 and the second steel pipe 20, and integrating the pile head 32 and the beam-column joint assembly 10. Each step will be explained in order below. Note that the matters mentioned above in "1. Joint structure" will not be explained again.

[0035] First, a beam-column connection assembly 10 is prepared in advance at a steel frame factory or other location separate from the construction site. The beam-column connection assembly 10 includes a first steel pipe 16 that opens downward and a steel beam bracket 14 that extends horizontally from the first steel pipe 16 and is joined to the foundation beam. Preparing the beam-column connection assembly 10 in advance at a factory or other location eliminates the need for reinforcement work for footings and the process of attaching and removing temporary formwork, thereby reducing the labor required and shortening the construction period for foundation work.

[0036] Next, as shown in Figure 3, a step of installing the second steel pipe 20 is performed. The pile 30 is an existing pile, and the pile head 32 of the pile 30 is exposed on level concrete 40 at the construction site. The second steel pipe 20 is installed while surrounding the pile head 32 of the pile 30 and adjusting the embedment depth of the pile head 32. The second steel pipe 20 is installed on the level concrete 40. The embedment depth of the pile head 32 can be adjusted by pouring the top surface height of the level concrete 40 on which the second steel pipe 20 is installed according to the height Hc of the pile head 32. The dashed line in Figure 3 indicates the designed position of the pile 30. By installing the second steel pipe 20 while adjusting it using the level concrete 40 according to the height Hc of the pile head 32, the connection structure 1 can ensure an appropriate embedment depth.

[0037] Next, as shown in Figure 4, a step of installing the beam-column connection assembly 10 is carried out. The beam-column connection assembly 10, suspended by a crane or the like, is lowered onto the second steel pipe 20 installed on the level concrete 40. As a result, as shown in Figure 1, the lower part 163 of the first steel pipe 16 enters the inside of the second steel pipe 20, and the beam-column connection assembly 10 is installed in a predetermined position so that the outer peripheral surface 164 of the lower part 163 contacts the inner peripheral surface 21 of the second steel pipe 20. 4 is installed so as to be in contact with the inner peripheral surface 21, the lower part of the footing where the bearing pressure from the pile 30 is greatest can be reinforced by the second steel pipe 20.

[0038] Then, with the beam-column connection assembly 10 installed in a predetermined position, the first steel pipe 16 and the second steel pipe 20 are joined. The outer peripheral surface 164 of the first steel pipe 16 and the upper end of the second steel pipe 20 can be joined by welding. Welding in this manner allows work to be performed from the outside of the second steel pipe 20, which is excellent in workability. Joining methods other than welding may also be used.

[0039] The inside of the first steel pipe 16 and the inside of the second steel pipe 20 below the lower end of the first steel pipe 16 are filled with hardenable filler 22 to integrate the pile cap 32 and the beam-column joint assembly 10. As shown in Figure 2, the first steel pipe 16 has an opening at its upper end where there is no beam bracket 14, and by pouring the hardenable filler 22 from the opening at the upper end, it can be filled all the way up to the inside of the second steel pipe 20. The inside of the column 12 can also be filled with hardenable filler 120. For the hardenable fillers 120 and 22, it is preferable to use concrete in terms of strength and cost.

[0040] As described above, according to the joining method of this embodiment, a predetermined embedding depth can be maintained by the second steel pipe 20, and therefore it is possible to accommodate changes in the embedding depth.

[0041] 3. Variations One aspect of the method for joining a pile and a beam-column connection assembly according to the modified example is characterized in that a beam-column connection assembly is prepared, the beam-column connection assembly includes a first steel pipe that opens downward and a steel beam bracket that extends horizontally from the first steel pipe and is joined to a foundation beam; a second steel pipe is joined to the first steel pipe in accordance with the measured height of the pile head; the beam-column connection assembly is installed so that the second steel pipe surrounds the pile head; a hardenable filler is filled inside the first steel pipe and inside the second steel pipe that is below the lower end of the first steel pipe, thereby integrating the pile head and the beam-column connection assembly; and the first steel pipe and the second steel pipe are joined together in a state in which the lower part of the first steel pipe is inserted into the second steel pipe and the outer surface of the lower part is in contact with the inner surface of the second steel pipe.

[0042] A bonding method according to a modified example will be described with reference to Fig. 5. Fig. 5 is a diagram for explaining a bonding method according to a modified example. The basic configuration is the same as that in "1. Bonding structure" above, so duplicated explanations will be omitted.

[0043] As shown in Fig. 5, the joint structure 1a differs from the joint structure 1 according to the above embodiment in that the lower end of the first steel pipe 16 and the inner peripheral surface 21 of the second steel pipe 20 are joined by welding at a lower end joint portion 25. The joint portion 24 and the lower end joint portion 25 can be joined in advance in a factory or the like.

[0044] The joining method according to the modified example includes the steps of preparing a beam-column joint assembly 10, joining a first steel pipe 16 and a second steel pipe 20, installing the beam-column joint assembly 10, and integrating the pile head 32 and the beam-column joint assembly 10. Each step will be explained in order below. Note that the matters mentioned above in "2. Joining method" will not be explained again.

[0045] First, a beam-column connection assembly 10 including a first steel pipe 16 and a steel beam bracket 14 is prepared in advance, for example, at a steel frame factory different from the construction site.

[0046] Next, the second steel pipe 20 is joined to the first steel pipe 16 so as to match the measured height Hc of the pile head 32 of the pile 30. The height Hc of the pile head 32 is measured at the construction site before joining the second steel pipe 20 to the first steel pipe 16. The outer circumferential surface 164 of the first steel pipe 16 and the upper end of the second steel pipe 20 are joined by, for example, welding so as to match the measured height Hc, and further the lower end of the first steel pipe 16 and the inner circumferential surface 21 of the second steel pipe 20 are joined by, for example, welding. The joining of the first steel pipe 16 and the second steel pipe 20 is carried out by welding the first steel pipe 16 to the upper end of the second steel pipe 20. The joining is performed in a state where the lower end 163 of the first steel pipe 16 enters the inside of the second steel pipe 20 and the outer circumferential surface 164 of the lower end 163 contacts the inner circumferential surface 21 of the second steel pipe 20. By joining the lower end of the first steel pipe 16 to the inner circumferential surface 21 of the second steel pipe 20, the joining strength is increased. In addition, since this is performed before the second steel pipe 20 is installed on site, it is easy to join the lower end of the first steel pipe 16 to the inner circumferential surface 21 of the second steel pipe 20.

[0047] Next, as shown in Figure 5, a step of installing the beam-column connection assembly 10 is carried out. Because the second steel pipe 20 and the beam-column connection assembly 10 have been integrated in advance, the beam-column connection assembly 10 is lowered from above the pile head 32, and the beam-column connection assembly 10 is installed so that the second steel pipe 20 surrounds the pile head 32. Because the joint position between the first steel pipe 16 and the second steel pipe 20 is adjusted to match the height Hc of the pile head 32, the joint structure 1a can ensure an appropriate embedment depth of the pile head 32.

[0048] Then, with the beam-column joint assembly 10 and the second steel pipe 20 installed in the predetermined positions, a hardening filler is filled inside the first steel pipe 16 and inside the second steel pipe 20 below the lower end of the first steel pipe 16 to integrate the pile head 32 and the beam-column joint assembly 10.

[0049] As described above, according to the joining method of this embodiment, the second steel pipe 20 can maintain a predetermined embedding depth, and therefore it is possible to accommodate changes in the embedding depth.

[0050] The present invention is not limited to the above-described embodiments, and various modifications are possible. For example, the present invention includes configurations that are substantially the same as the configurations described in the embodiments (for example, configurations with the same function, method, and result, or configurations with the same purpose and effect). The present invention also includes configurations in which non-essential parts of the configurations described in the embodiments are replaced. The present invention also includes configurations that achieve the same effects or purposes as the configurations described in the embodiments. The present invention also includes configurations in which publicly known technology is added to the configurations described in the embodiments. [Explanation of symbols]

[0051] 1, 1a... joint structure, 10... beam-column joint assembly, 12... column, 120... hardening filler, 14... beam bracket, 16... first steel pipe, 160... upper steel pipe, 162... lower steel pipe, 163... lower part, 164... outer surface, 20... second steel pipe, 21... inner surface, 22... hardening filler, 24... joint, 25... lower end joint, 30... pile, 32... pile head, 40... level concrete, Ha, Hb, Hc... height

Claims

1. a beam-column connection assembly including a first steel pipe opening downward and a steel beam bracket extending horizontally from the first steel pipe and joined to a foundation beam; A second steel pipe is installed while surrounding the pile head and adjusting the embedment depth of the pile head. The beam-column connection assembly is installed at a predetermined position so that the lower portion of the first steel pipe enters the inside of the second steel pipe and the outer peripheral surface of the lower portion contacts the inner peripheral surface of the second steel pipe; In the state where the pipe is installed in the predetermined position, the first steel pipe and the second steel pipe are joined together, a method for joining a pile and a beam-column joint assembly, characterized in that a hardenable filler is filled inside the first steel pipe and inside the second steel pipe below the lower end of the first steel pipe to integrate the pile head and the beam-column joint assembly.

2. The method for joining a pile and a beam-column joint assembly according to claim 1, A method for joining a pile and a beam-column joint assembly, characterized in that the outer surface of the first steel pipe and the upper end of the second steel pipe are joined by welding.

3. a beam-column connection assembly including a first steel pipe opening downward and a steel beam bracket extending horizontally from the first steel pipe and joined to a foundation beam; A second steel pipe is joined to the first steel pipe in accordance with the measured height of the pile head of the pile, The beam-column connection assembly is installed so that the second steel pipe surrounds the pile head, a hardenable filler material is filled inside the first steel pipe and inside the second steel pipe located below the lower end of the first steel pipe to integrate the pile head and the beam-column joint assembly; a joining method for a pile and a beam-column connection assembly, characterized in that the first steel pipe and the second steel pipe are joined together in a state in which the lower part of the first steel pipe is inserted into the inside of the second steel pipe and the outer surface of the lower part is in contact with the inner surface of the second steel pipe.

4. The method for joining a pile and a beam-column joint assembly according to claim 3, The outer circumferential surface of the first steel pipe and the upper end of the second steel pipe are joined by welding, A method for joining a pile and a beam-column joint assembly, characterized in that the lower end of the first steel pipe and the inner surface of the second steel pipe are joined by welding.

5. a beam-column connection assembly including a first steel pipe that opens downward and a steel beam bracket that extends horizontally from the first steel pipe and is joined to a foundation beam; A second steel pipe that overlaps at least a portion of the first steel pipe in the height direction and at least a portion of the pile head in the height direction; a joining portion that joins the first steel pipe and the second steel pipe in a state where an outer peripheral surface of the first steel pipe and an inner peripheral surface of the second steel pipe are in contact with each other; a hardenable filler filled inside the first steel pipe and inside the second steel pipe located below the lower end of the first steel pipe; A joint structure for a pile and a beam-column joint assembly, comprising:

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