Connection joint of steel material and connection structure of steel material

Abstract

To provide a connection joint of a steel material which can connect upper and lower steel materials in a longitudinal direction without depending on welding and save maintenance labor with high workability.SOLUTION: A connection joint of a steel material connects a supporting pile composed of a steel material driven into the ground and a supporting pipe which is arranged at the upper position of the supporting pile and is composed of a steel material. The connection joint has a joint socket composed of a lower cylinder externally mountable on the upper part of the supporting pile, an upper cylinder externally mountable on the lower part of the supporting pile, and a diaphragm which is interposed at a boundary part of the lower cylinder and the upper cylinder and is integrated therewith, and a gap adjustment body which is arranged on the outer peripheries of the lower cylinder and the upper cylinder of the joint socket. The lower cylinder and the upper cylinder have openings at positions corresponding to the gap adjustment body, the gap adjustment body has an exterior body which projects from the outer periphery of the lower cylinder or the upper cylinder, and forms a gap between the lower cylinder or the upper cylinder and the exterior body, and a gap adjustment part which is inserted into the opening and disposed in the gap. The gap adjustment part can adjust a length.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a joint for steel materials and a joint structure for steel materials that can be applied to joining support piles and support columns of temporary girders, temporary bridges, etc. [Background technology]

[0002] When constructing or repairing roads, etc., temporary platforms are sometimes constructed on the side of the road as passageways and waiting areas for personnel and vehicles. The temporary platforms are used during the construction period and then dismantled. The substructure of the temporary platform uses steel materials such as H-shaped steel beams and steel pipes as support columns, which are joined to the top of support piles driven into the ground. Full-circumference welding is known as a means of connecting support piles and support columns, but since welding is a large-scale operation, particularly in mountainous slopes, requiring the installation of separate scaffolding, various mechanical joining structures that do not rely on welding have been proposed.

[0003] Patent Documents 1 and 2 disclose mechanical joints in which the ends of upper and lower steel pipes are processed to form a pair of an outer fitting end and an inner fitting end, and the outer fitting end and the inner fitting end are joined together by rotating them around an axis in a fitted state. Patent Document 3 also discloses a joining structure in which a cylindrical joint socket having an inner diameter larger than the outer diameters of the upper and lower steel pipes is used, and the positions of the upper and lower steel pipes are fixed by tightening an adjustment bolt that is screwed into the joint socket that spans the butt joint between the upper and lower steel pipes. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-29250 A [Patent Document 2] JP 2020-20216 A [Patent Document 3] JP 2018-204379 A Summary of the Invention [Problem to be solved by the invention]

[0005] The conventional joint structure has the following problems. <1> In the substructure of the temporary girders, after driving in the steel pipes that will serve as support piles, the pile heads must be cut off in order to adjust the height and inclination of the driven steel pipe end faces (pile heads). For this reason, mechanical joints such as those in Patent Documents 1 and 2, which process the steel pipe end faces in advance, cannot be used. <2> The joint structure of Patent Document 3 fastens the upper and lower steel pipes by tightening an adjustment bolt. When fastening with an adjustment bolt, maintenance such as periodic retightening of the adjustment bolt is required. However, when the construction site is on a river or the sea, it is difficult to set up a work scaffold above the water and perform maintenance. <3> When tightening the adjustment bolt, torque management is required, so it is necessary to use power tools, etc.

[0006] The present invention has been made in consideration of the above points, and an object of the present invention is to provide at least one of the following joined structure of steel materials and joined joint of steel materials. <1> The upper and lower steel members can be joined vertically without welding. <2> Ability to handle on-site cutting of pile heads <3> Ability to absorb construction errors in the upper and lower steel materials <4> Reduces maintenance labor <5> High workability [Means for solving the problem]

[0007] The present application provides a joint for joining steel materials, which joins a support pile made of steel driven into the ground and a support column made of steel placed above the support pile, the joint joint having a joint socket consisting of a lower tube that can be fitted to the upper part of the support pile, an upper tube that can be fitted to the lower part of the support column, and a diaphragm interposed and integrated at the boundary between the lower tube and the upper tube, and a gap adjustment body that is placed on the outer periphery of the lower tube and the upper tube of the joint socket, the lower tube and the upper tube having openings at positions corresponding to the gap adjustment body, the gap adjustment body having an outer body that protrudes from the outer periphery of the lower tube or the upper tube and forms a gap between the lower tube or the upper tube, and a gap adjustment part that is inserted into the opening and placed in the gap, the gap adjustment part having a length that is adjustable. The gap adjustment portion may be composed of a member divided into multiple parts in the longitudinal direction, at least one of the multiple parts being a wedge body, and the length of the gap adjustment portion may be adjustable by the amount of penetration of the wedge body. Of the plurality of members of the gap adjustment portion, the member inserted into the opening may be a bolt. A nut may be disposed on the outer peripheral surface of the lower tube or the upper tube, the nut communicating with a screw hole in the opening, and the bolt may be screwed into the nut. The exterior body of the gap adjuster may be configured by dividing the gap adjuster into a plurality of members above and below. An opening may be provided on a side surface of the exterior body of the gap adjuster. The gap adjusters may be provided in two or more stages in the up-down direction of each of the lower cylinder and the upper cylinder. The upper and lower gap adjusters may be arranged so as not to line up in the axial direction of the joint socket. The joint may include a tension member arranged outside the outer periphery of the joint socket and connecting the support pile and the support column.

[0008] The present application also relates to a steel joint structure for joining a support pile made of steel driven into the ground and a support column made of steel arranged above the support pile, the upper part of the support pile and the lower part of the support column being joined together using a steel joint joint, the joint joint having a lower tube that can be fitted on the upper part of the support pile, an upper tube that can be fitted on the lower part of the support column, and a joint socket made of a diaphragm interposed and integrated at the boundary between the lower tube and the upper tube, and a gap adjuster that is arranged on the outer periphery of the lower tube of the joint socket and the upper tube, the lower tube and the upper tube being configured to adjust the gap between the gap adjuster and the upper tube. The gap adjustment body has an opening at a position corresponding to the outer periphery of the lower tube or the upper tube, and the gap adjustment body has an outer body that protrudes from the outer periphery of the lower tube or the upper tube and forms a gap between the lower tube or the upper tube, and a gap adjustment part that is inserted into the opening and placed in the gap, one end abutting the support pile or the support column and the other end abutting the outer body, the gap adjustment part having an adjustable length, and the gap adjustment body abuts one end against the support pile or the support column and the other end abutting the outer body when the upper tube is sheathed around the lower part of the support column or the lower tube is sheathed around the upper part of the support pile. The gap adjustment portion may be composed of a member divided into multiple parts in the longitudinal direction, at least one of the multiple parts being a wedge body, and the length of the gap adjustment portion may be adjustable by the amount of penetration of the wedge body. Of the plurality of members of the gap adjustment section, the member that is inserted through the opening and abuts against the support pile or the support column may be a bolt. A nut may be disposed on the outer peripheral surface of the lower tube or the upper tube, the nut communicating with a screw hole in the opening, and the bolt may be screwed into the nut. Effect of the Invention

[0009] The present invention has at least one of the following advantages. <1> The joint socket is simply inserted into the support pile or support column, and does not require welding to the support pile or support column. This means that there is no need to set up scaffolding for welding, which is a major undertaking, and construction can be completed in a short period of time. <2> Since the ends of the support piles and columns do not need to be processed, it is also possible to cut off the heads of the support piles on site to adjust their height or inclination. <3> The multiple gap adjusters work together with the joint sockets to absorb construction errors in the support piles and columns. <4> Since the wedge body is inserted and fixed, there is no need to manage the torque of the adjustment bolt, which means there is no need to use power tools, etc., improving workability. <5> There is no need for periodic maintenance such as retightening adjustment bolts. <6> Since the gap adjustment portion of the gap adjuster is a separate member from the joint socket, the joint socket can be reused by replacing the gap adjustment portion. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of a joint structure of a steel material according to the present invention; [Diagram 2] A longitudinal cross-sectional view of the joint structure of the steel material of the present invention. [Diagram 3] Exploded perspective view of the gap adjuster in the upper cylinder (1) [Figure 4] Cross-sectional view of the gap adjuster in the upper cylinder [Diagram 5] Cross-sectional view of the gap adjuster in the lower cylinder [Figure 6] Illustration of the force acting when a wedge penetrates [Figure 7] An explanatory diagram of the action of the gap adjuster when a horizontal force is applied to the support [Figure 8] Exploded perspective view of the gap adjuster in the upper cylinder (2) [Figure 9] Cross-sectional view of the diaphragm seen from the upper cylinder [Figure 10] FIG. 1 is a perspective view of a joint structure of a steel material according to a second embodiment of the present invention; [Figure 11] FIG. 11 is an exploded perspective view of a gap adjuster in an upper cylinder according to a second embodiment; [Figure 12] FIG. 11 is an explanatory diagram of a gap adjuster in an upper cylinder according to a second embodiment. [Figure 13] FIG. 11 is a perspective view of a joint structure of a steel material according to the present invention in Example 3. [Figure 14] FIG. 13 is an explanatory diagram of a gap adjuster in the upper cylinder according to the fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. [Example 1]

[0012] <1> Combination of steel materials for support piles and columns In this first embodiment, a support pile 10 driven into the ground and a support column 20 arranged above the support pile 10 are made of steel pipes.

[0013] <2> Steel joints and joint structures (Fig. 1) In the present invention, a joint joint having a cylindrical joint socket 30 and a gap adjustment body 40 provided on the outer periphery of the joint socket 30 is used to integrally join a lower support pile 10 and an upper support column 20 that are butted together vertically.

[0014] <3> Fitting Socket The joint socket 30 consists of a lower tube 31 that can be fitted to the upper part of the support pile 10, an upper tube 32 that can be fitted to the lower part of the support column 20, and a diaphragm 33 that is interposed and integrated at the boundary between the lower tube 31 and the upper tube 32. In this embodiment, the lower cylinder 31 and the upper cylinder 32 are formed from steel pipes of different diameters, with the lower cylinder 31 having a larger diameter than the upper cylinder 32. The diaphragm 33 is a plate material that integrates the lower tube 31 and the upper tube 32, which have different diameters, to enable load transmission, and is interposed between the butt ends of the support pile 10 and the support column 20, and is formed, for example, from a steel plate. A compressive axial force due to the weight of the support column 20 and the load applied thereon always acts on the joint between the support pile 10 and the support column 20. However, since the upper and lower surfaces of the diaphragm 33 of the joint socket 30 are interposed between the opposing surfaces of the upper end of the support pile 10 and the lower end of the support column 20 in a face-to-face relationship, the compressive axial force is transmitted between the support pile 10 and the support column 20 through the diaphragm 33. The joint socket 30 is simply inserted into the support pile 10 or the support column 20, and does not require welding to the support pile 10 or the support column 20. Therefore, large-scale work such as setting up separate scaffolding for welding is not required, and construction can be completed in a short period of time. In addition, since the end faces of the support pile 10 and the support column 20 do not need to be processed as in the case of conventional mechanical joints, it is also possible to cut off the head of the support pile 10 to adjust the height or inclination of the support pile 10 on site.

[0015] <4> Dimensional relationship between steel material and each cylinder (Fig. 2) The lower cylinder 31 and upper cylinder 32 of the joint socket 30 are fitted to the support pile 10 and the support column 20, respectively, so the inner diameter of the lower cylinder 31 is larger than that of the support pile 10, and the inner diameter of the upper cylinder 32 is larger than that of the support column 20. For this reason, a gap is formed between the support pile 10 or the support column 20 and the joint socket 30, and this gap varies depending on the dimensional differences and construction errors of the support pile 10 or the support column 20, the lower cylinder 31, and the upper cylinder 32. For this reason, a gap adjuster 40 is provided on the outer periphery of the joint socket 30 to fix the support pile 10 or the support column 20 within the joint socket 30. In Figure 2, in order to absorb construction errors of the support pile 10 in the joint socket 30, the inner diameter of the lower tube 31 and the inner diameter of the upper tube 32 are not made the same but are made to be different diameters. However, in the present invention, the relationship in size between the inner diameters of the lower tube 31 and the upper tube 32 is not limited to this, and they may be the same inner diameter or the inner diameter of the upper tube 32 may be larger than the inner diameter of the lower tube 31.

[0016] <5> Gap adjustment body The gap adjuster 40 in the upper cylinder 32 is composed of an exterior body 41 made of a channel steel protruding from the outer periphery of the upper cylinder 32, and a gap adjuster 42 which is a combination of a pressing body 421 made of an H-shaped steel arranged between the support column 20 and the exterior body 41, a wedge body 422, a tilt body 423 and a spacer 424 (FIGS. 3 and 4). An opening 321 is provided in the upper cylinder 32 at a position corresponding to the pressing body 421, and the pressing body 421 is inserted through the opening 321 and comes into contact with the support column 20. The wedge body 422 and the inclined body 423 have corresponding inclined surfaces 422a, 423a, respectively, and the pressing body 421, the spacer 424, and the inclined body 423 are disposed between the support column 20 and the exterior body 41, the wedge body 422 penetrates between the inclined body 423 and the exterior body 41 to abut against the exterior body 41, and the pressing body 421 abuts against the support column 20 to fix the support column 20. If the surface of the pressing body 421 that abuts against the support column 20 has a curvature that matches the surface of the support column 20, the support column 20 can be pressed efficiently. A plurality of gap adjusters 40 are disposed in the circumferential direction of the upper cylinder 32, and more preferably, are disposed at equal intervals. The gap adjuster 40 in the lower cylinder 31 is similar to the gap adjuster 40 in the upper cylinder 32 described above, except that a pressing body 421 is inserted into the opening 311 provided in the lower cylinder 31 (FIG. 5).

[0017] Due to dimensional differences and construction errors of the support pile 10, support column 20, lower tube 31, and upper tube 32, the gap between the support pile 10 or support column 20 and the joint socket 30 varies, and as a result, the distance between the outer body 41 and the support pile 10 or support column 20 varies.However, by changing the size of the pressing body 421 of the gap adjustment section 42, changing the thickness and number of the spacer 424, changing the thickness of the inclined body 423, changing the thickness of the wedge body 422, and adjusting the penetration amount, the length of the gap adjustment section 42 can be adjusted to correspond to the difference in distance, and the support pile 10 or support column 20 can be fixed.

[0018] The gap adjustment body 40 abuts the pressing body 421 against the support pile 10 and the support column 20 by penetrating the wedge body 422. Furthermore, a plurality of gap adjustment bodies 40 are arranged in the circumferential direction of the support pile 10 and the support column 20. In this way, the plurality of gap adjustment bodies 40 cooperate with the joint socket 30 to absorb construction errors of the support pile 10 and the support column 20, adjust the horizontal position and angle, and fix and hold the positions of the support pile 10 and the support column 20. The gap adjuster 40 has a wedge body 422 penetrating therethrough, so that the pressing body 421 abuts against the support pile 10 and the support column 20.

[0019] <5.1> Force action due to penetration of wedge body (Fig. 6) The effect of the wedge body 422 penetrating the gap adjuster 40 in the upper cylinder 32 will be described with reference to the schematic diagram of FIG. When the wedge body 422 is inserted between the inclined body 423 and the exterior body 41 (force P), a force (F=P·cosθsinθ) is generated between the support column 20 and the exterior body 41, pressing the pressing body 421 against the support column 20 while preventing the wedge body 422 from loosening. The wedge body 422 fixes the support column 20 without falling out due to the action of force F, which is not limited to the direction of penetration. However, when the wedge body 422 is inserted from above vertically, even if a large horizontal force acts and the gap between the support column 20 and the pressing body 421 becomes large and F = 0 occurs, the wedge body 422 falls downward due to gravity, so that the wedge body 422 is inserted again, and the support column 20 is fixed by the transmission of force by the wedge body 422, so that maintenance such as re-inserting the wedge body 422 is not required.

[0020] In this way, instead of fixing with the conventional adjustment bolt, the wedge body 422 is inserted and fixed, so there is no need to manage the torque of the adjustment bolt, and there is no need to use power tools, etc., improving workability. Furthermore, there is no need for periodic maintenance such as retightening the adjustment bolts. Furthermore, since the gap adjustment portion 42 of the gap adjustment body 40, which is composed of the pressing body 421, the wedge body 422, the inclined body 423 and the spacer 424, is a separate component from the joint socket 30, the joint socket 30 can be reused by replacing the gap adjustment portion 42.

[0021] <5.2> Arrangement of gap adjusters By using the joint socket 30 and the gap adjuster 40, bending forces can be transmitted between the support pile 10 and the support column 20, and the strength of the joint socket 30 resists the bending forces. The gap adjusters 40 can be arranged in one stage as shown in the schematic diagram of Fig. 7(a), or in two or more stages as shown in Fig. 7(b). When the gap adjusters 40 are in one stage, they tend to rotate around the pressing body 421 in contact with the support column 20 when a horizontal force Q acts on the support column 20, making it difficult to resist the bending moment M. Therefore, when it is necessary to resist a larger bending moment M, it is desirable to provide the gap adjusters 40 in two or more stages in the vertical direction relative to the support column 20. Similarly, for the support pile 10, the number of stages of the gap adjusters 40 is adjusted according to the bending moment M acting thereon.

[0022] In this embodiment, the lower cylinder 31 and the upper cylinder 32 are each provided with gap adjusters 40 in two stages in the vertical direction. The gap adjusters 40 located above and below, such as the gap adjuster 40 at the upper stage and the gap adjuster 40 at the lower stage of the gap adjusters 40 provided in two stages on the lower cylinder 31 and the upper cylinder 32, or the gap adjuster 40 at the top stage of the lower cylinder 31 and the gap adjuster 40 at the bottom stage of the upper cylinder 32, are arranged so as not to be aligned on the same line in the vertical direction. By configuring in this manner, when the wedge body 422 of the gap adjuster 40 penetrates the gap adjuster 40 from vertically above, the exterior body 41 of the gap adjuster 40 located above does not interfere. Note that when the wedge body 422 penetrates from an oblique direction or a lateral direction, or when the gap adjusters 40 are sufficiently far apart from each other, the gap adjusters 40 located above and below may be arranged so as to be aligned on the same line in the vertical direction.

[0023] <5.3> Shape of exterior body In this embodiment, a channel steel is used for the exterior body 41, but flat steel bent or multiple pieces welded together to form a U-shape in plan view, angle steel, reinforcing bar processed into a U-shape in plan view, etc. may also be used. Also, the shape is not limited to a U-shape in plan view, and it may be a circular or polygonal shape, and steel pipes, shaped steel, flat steel, or reinforcing bar cut and processed into these shapes may also be used.

[0024] The gap adjustment part 42 is disposed between the joint socket 30 and the exterior body 41. However, when the exterior body 41 is a long channel steel (FIG. 8), if the gap between the top and bottom of the exterior body 41 is small, it is difficult to insert the pressing body 421, the inclined body 423, and the spacer 424 of the gap adjustment part 42 between the joint socket 30 and the exterior body 41. For this reason, by processing the exterior body 41 and providing an exterior body opening 411 on the side, it is possible to insert the pressing body 421, the inclined body 423, and the spacer 424 from the side. In addition, even when the gap adjustment part 42 is inserted from the gap between the top and bottom of the exterior body 41, the presence of the exterior body opening 411 makes it easier to arrange the gap adjustment part 42. In this embodiment, the exterior body 41 is arranged by dividing the channel steel into two tiers, upper and lower. By dividing the exterior body 41 into multiple components in this manner, the exterior body opening 411 is made larger, and the pressing body 421, inclined body 423, and spacer 424 of the gap adjustment section 42 can be easily inserted between the upper and lower exterior bodies 41, and the processing effort of each component is also eliminated.

[0025] <6> Diaphragm Shape In this embodiment, the gap adjuster 40 penetrates the wedge body 422 from vertically above. Therefore, in order to prevent the diaphragm 33 from interfering with the wedge body 422 of the gap adjuster 40 of the lower cylinder 31 when it penetrates, the diaphragm 33 is made polygonal (octagonal) to reduce the protruding area of ​​the diaphragm 33 from the lower cylinder 31 (FIG. 9). The diaphragm 33 may be disk-shaped.

[0026] [Example 2] <1> Adjustment bolts and nuts (Fig. 10, 11, 12) In the above-mentioned Example 1, the pressing body 421 is fixed by abutting against the support pile 10 or the support column 20, but it is also possible to screw an adjustment bolt 426 into a nut 425 whose screw hole is connected to the opening 321 on the outer surface of the joint socket 30 and fixed by welding or the like, and adjust the amount of protrusion from the opening 321 at the tip of the adjustment bolt 426 into the inside of the joint socket 30, thereby absorbing dimensional differences and construction errors of the support pile 10, the support column 20, the lower tube 31, and the upper tube 32, and to fix the pressing body 421 in contact with the support pile 10 or the support column 20. At this time, the amount by which adjustment bolt 426 protrudes from nut 425 also changes, causing the distance between outer body 41 and adjustment bolt 426 to change; however, as in Example 1, this can be addressed by changing the thickness or number of spacers 424 or by adjusting the amount of penetration of wedge body 422. In addition, by pressing the head of the adjustment bolt 426 with the gap adjustment portion 42 while the adjustment bolt 426 is in contact with the support column 20, the adjustment bolt 426 will not loosen, and maintenance such as periodically retightening the adjustment bolt 426 is not required.

[0027] In addition, in this embodiment, adjustment bolt 426 is screwed into the threaded hole of nut 425, but when adjustment bolt 426 is inserted into the through hole, pressing body 421 of embodiment 1 is replaced with adjustment bolt 426.

[0028] [Example 3] <1> Tensile member placement In the joint structures of the above-mentioned Examples 1 and 2, the ends of the support pile 10 and the support column 20 only contact the diaphragm 33 of the joint socket 30, and are therefore unable to resist tensile axial force. Therefore, in this embodiment, in addition to the configuration of the first embodiment, the support pile 10 and the support column 20 are integrally joined via a tension member 50 as a mechanism for resisting the tensile axial force (FIG. 13). The lower end of the tension member 50 is connected to a lower fixing band 51 fixed to the outer periphery of the support pile 10, and the upper end of the tension member 50 is connected to an upper fixing band 52 fixed to the outer periphery of the support column 20. Since the support pile 10 and the support column 20 are connected by the tension member 50, the tension member 50 not only resists the tensile axial force and prevents the support pile 10 and the support column 20 from coming out of the joint socket 30, but also functions as a bending strength member. As the configuration of this embodiment, for example, the lower fixing band, upper fixing band, and tension member in Japanese Patent No. 7098079 can be applied.

[0029] [Example 4] <1> Shape of gap adjustment part In the first embodiment, the pressing body 421 of the gap adjustment part 42 is an H-shaped steel, but it is not limited thereto and other shaped steels or a member made by laminating flat plates can be used. In addition, in order to prevent the pressing body 421, the wedge body 422, the inclined body 423, and the spacer 424 from falling off during construction, some or all of them may be temporarily integrated with bolts or the like for handling. In addition, the distance between the exterior body 41 and the support pile 10 or support column 20 can be changed by changing the thickness or number of the spacer 424 or adjusting the penetration amount of the wedge body 422, or a jack body 427 (FIG. 11(a)) or a spring stay 428 (FIG. 11(b)) that can adjust the length and maintain the distance can be used. These can also be used in combination with the wedge body 422. [Explanation of symbols]

[0030] 10 supporting piles, 20 supporting columns; 30 joint socket, 31 lower cylinder, 311 opening, 32 upper cylinder, 321 opening, 33 diaphragm 40 gap adjustment body, 41 exterior body, 411 exterior body opening, 42 gap adjustment part, 421 pressing body, 422 wedge body, 423 inclined body, 424 spacer, 425 nut, 426 adjustment bolt, 427 jack body, 428 spring stay 50 tension member, 51 lower fixing band, 52 upper fixing band

Claims

1. A joint for joining a support pile made of a steel material driven into the ground and a support column made of a steel material arranged above the support pile, The joint joint includes a lower tube that can be fitted to the upper part of the support pile, an upper tube that can be fitted to the lower part of the support column, and a diaphragm that is interposed and integrated at the boundary between the lower tube and the upper tube. A gap adjustment body is disposed on the outer periphery of the lower tube and the upper tube of the joint socket. The lower cylinder and the upper cylinder have openings at positions corresponding to the gap adjuster, The gap adjustment body includes an exterior body that protrudes from an outer periphery of the lower tube or the upper tube and forms a gap between the lower tube or the upper tube, and a gap adjustment part that is inserted into the opening and disposed in the gap, The gap adjustment portion is characterized in that its length is adjustable. Steel joining joints.

2. The gap adjustment portion is composed of a member divided into a plurality of parts in the length direction, At least one of the plurality of members is a wedge; The length of the gap adjustment portion can be adjusted by the amount of penetration of the wedge body. A joint for steel materials according to claim 1.

3. Among the plurality of members of the gap adjustment portion, the member inserted into the opening is a bolt. A joint for steel materials according to claim 2.

4. a nut is disposed on an outer peripheral surface of the lower cylinder or the upper cylinder, the nut communicating with a screw hole in the opening; The bolt is screwed onto the nut. A joint for steel materials according to claim 3.

5. The exterior body of the gap adjuster is configured by dividing a plurality of members into upper and lower parts for one gap adjuster, A joint for steel materials according to claim 1.

6. An opening is provided on a side surface of the exterior body of the gap adjuster, A joint for steel materials according to claim 1.

7. The gap adjuster is provided in two or more stages in the vertical direction of each of the lower cylinder and the upper cylinder. A joint for steel materials according to any one of claims 1 to 6.

8. The gap adjusters located above and below are arranged so as not to be aligned on the same line in the vertical direction. A joint for steel materials according to claim 7.

9. The present invention is characterized in that it has a tension member arranged outside the outer periphery of the joint socket and connecting the support pile and the support column. A joint for steel materials according to claim 8.

10. A steel joint structure in which a support pile made of a steel material driven into the ground and a support column made of a steel material arranged above the support pile are joined together, and the upper part of the support pile and the lower part of the support column are joined together using a steel joint joint, The joint joint includes a lower tube that can be fitted to the upper part of the support pile, an upper tube that can be fitted to the lower part of the support column, and a diaphragm that is interposed and integrated at the boundary between the lower tube and the upper tube. A gap adjustment body is disposed on the outer periphery of the lower tube and the upper tube of the joint socket. The lower cylinder and the upper cylinder have openings at positions corresponding to the gap adjuster, The gap adjustment body includes an exterior body that protrudes from the outer periphery of the lower tube or the upper tube and forms a gap between the lower tube or the upper tube, and a gap adjustment part that is inserted into the opening and placed in the gap, one end of which abuts against the support pile or the support column, and the other end of which abuts against the exterior body. The gap adjustment portion is adjustable in length, The gap adjustment body is characterized in that, with the upper cylinder exteriorly mounted on the lower part of the support column, or the lower cylinder exteriorly mounted on the upper part of the support column, one end is abutted against the support pile or the support column, and the other end is abutted against the exterior body. Steel joint structure.

11. The gap adjustment portion is composed of a member divided into a plurality of parts in the length direction, At least one of the plurality of members is a wedge; The length of the gap adjustment portion can be adjusted by the amount of penetration of the wedge body. The joint structure of steel materials according to claim 10.

12. Among the plurality of members of the gap adjustment portion, the member that is inserted into the opening and abuts against the support pile or the support column is a bolt. A joint structure for steel materials according to claim 11.

13. a nut is disposed on an outer peripheral surface of the lower cylinder or the upper cylinder, the nut communicating with a screw hole in the opening; The bolt is screwed onto the nut. A joint structure for steel materials according to claim 12.

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