Steel material joining member, and steel material joining structure

Abstract

To provide a steel material joining member and a steel material joining structure that can join steel materials with a simple operation so that steel materials cannot be displaced and can be adjusted horizontally and diagonally.SOLUTION: A steel material joining member 1 comprises: a cylinder body 10 having an upper cylinder 11 that can be inserted onto a support column B1, a lower cylinder 12 that can be inserted onto a support pile B2, and a shelf plate 13 inserted into the boundary between the upper cylinder 11 and the lower cylinder 12 and integrated with them; and a plurality of gap adjustment materials 20 having adjustment means 24 that can increase or decrease a thickness of material itself. The gap adjustment materials 20 are attached to an inner surface of at least one of the upper cylinder 11 and the lower cylinder 12. In a steel material joining structure A, a lower end surface of the support column B1 abuts on an upper surface of the shelf plate 13 within the upper cylinder 11, an upper end surface of the support pile B2 abuts on a lower surface of the shelf plate 13 within the lower cylinder 12, and outer peripheries of the support column B1 and the support pile B2 are gripped in a planar manner by the plurality of gap adjustment materials 20.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] Temporary structures such as temporary bridges and piers use steel materials such as steel pipes as support columns and support piles, which are extended by connecting the support columns to the tops of the support piles driven into the ground. Full circumference welding is known as a means of joining support piles and support columns, but because this requires a large-scale operation, various mechanical joining methods using tubular joint sockets have been proposed.

[0003] Patent Document 1 discloses a joining method in which a joint socket having an inner diameter larger than the outer diameter of the upper and lower steel pipes is used, and a plurality of through bolts are inserted between the upper and lower steel pipes and the joint socket which is fitted across the butt joint between the upper and lower steel pipes, and then adhesive is filled into the gaps formed between the joint socket and the peripheral surfaces of the upper and lower steel pipes to fix them in place. Patent Document 2 discloses a joining method in which the ends of upper and lower steel pipes are directly spigot-fitted together without using a joint socket, and multiple through bolts are screwed into the overlapped fitted portion to integrate them. Patent Document 3 discloses a joining method that uses a split joint socket with an inside diameter larger than the outside diameters of the upper and lower steel pipes, multiple sets of band materials for tightening the joint socket, and a pair of annular spacers made of hard rubber that are interposed in the gap between the joint socket and the peripheral surfaces of the upper and lower steel pipes, in which a semi-cylindrical socket that is split into upper and lower steel pipes is exteriorized with the spacer interposed between them, and then the band materials are tightened to flexibly join the joints of the upper and lower steel pipes. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-222853 [Patent Document 2] JP 2005-351412 A [Patent Document 3] JP 2001-64961 A Summary of the Invention [Problem to be solved by the invention]

[0005] The prior art has the following drawbacks: <1> In mountainous areas or riverbeds, it is extremely difficult to maintain verticality and drive support piles at the correct height, so the top of the support pile is often driven in at an angle or shifted from the correct position. If the support pile shifts horizontally or tilts after being driven in, conventional joint sockets cannot absorb these construction errors. <2> It is desirable to be able to reuse steel materials, including joints, in temporary structures after they have been in service, but it is conceivable that bolt-type joint sockets will not be able to be reused after their service period as the bolts will rust and become unable to be removed from the nuts. <3> A joint socket that uses a spacer made of hard rubber has a joint structure that allows the joint to be displaced, and it is not possible to join the joint so that it cannot be displaced. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the steel joining member of the present invention comprises a tube body having an upper tube, a lower tube, and a shelf plate, and a plurality of gap adjustment materials, and is characterized in that a plurality of gap adjustment materials are attached to the inner surface of at least one of the upper tube and the lower tube. According to this configuration, the support column and the support pile can be firmly joined with a simple structure and the horizontal and angle adjustment can be performed. In addition, the gap adjustment material can be replaced after deterioration in service, making it durable for reuse.

[0007] The steel connecting member of the present invention may have an imaginary inner circumferential surface that corresponds to the outer circumferential surfaces of the support column and the support pile, defined by the inner surfaces of the multiple gap adjusters. According to this configuration, the gap adjuster grips the support columns and support piles from the outside in a planar manner, making it possible to transmit stress evenly.

[0008] In the steel joining member of the present invention, the gap adjustment member may comprise an outer plate, an inner plate, and an adjustment means capable of increasing or decreasing the thickness from the outer plate to the inner plate, and may be capable of adjusting the inclination around two perpendicular axes. This configuration allows for angle adjustment in addition to horizontal adjustment.

[0009] The steel joint structure of the present invention is characterized in that the support column and the support pile are joined together by a steel joint member so that the support column can be adjusted horizontally and inclined with respect to the support pile. With this configuration, the horizontal position and angle of the support pillar can be readjusted even after joining, and it can be disassembled with simple operations after being put into service. Effect of the Invention

[0010] Since the steel connecting member of the present invention has the configuration described above, it has at least one of the following effects. <1> By simply fastening a number of gap adjusters, the support columns and support piles can be joined together so that they cannot be displaced, which greatly improves workability on site. <2> Horizontal and tilt errors of support piles can be corrected with simple operations. <3> By gripping the outer periphery of the support column and the support pile in a planar manner, the stress acting on the support column can be evenly transmitted to the support pile, thereby preventing deformation of the support column and the support pile. <4> It is highly versatile and can be applied not only to circular steel pipes but also to column materials, H-beams, and other steel materials.

[0011] Since the steel joint structure of the present invention has the configuration described above, it has at least one of the following effects. <1> The horizontal position and angle of the support pillar can be readjusted even after the support pillar and the support pile are joined. <2> It can be easily disassembled with simple operations. <3> The separated steel joint components can be reused. <4> By converting the horizontal force acting on the support column into a downward pushing force using the principle of leverage, it is possible to prevent the steel joint members from coming loose. [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is an explanatory diagram of a joint structure of steel materials according to the present invention. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. 2 is an explanatory diagram of a construction method for a joint structure of steel materials according to the present invention. [Diagram 5] FIG. 11 is an explanatory diagram of Example 3. [Figure 6] FIG. 11 is an explanatory diagram of Example 4. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, the steel joint member and the joint structure of the present invention will be described in detail with reference to the drawings. Note that the length of the steel material is appropriately shortened in the drawings. EXAMPLES

[0014] [Steel joints] <1> Overall structure (Figure 1). The steel material connecting member 1 of the present invention is a connecting member equipped with a construction error correction function, which connects a support column B1, which is an upper steel material B oriented vertically, and a support pile B2, which is a lower steel material B. The steel joining member 1 comprises a tubular main body 10 into which the lower part of the support column B1 and the upper part of the support pile B2 can be inserted from the vertical direction, and a plurality of gap adjustment materials 20 arranged on the inner surface of at least one of the upper and lower tubes of the tubular main body 10. In this example, eight gap adjusters 20 are attached at equal intervals in the circumferential direction to the inner surfaces of both the upper and lower cylinders of the cylinder main body 10. The number of gap adjusters 20 is not limited to this, but it is preferable to provide at least four on each side.

[0015] <1.1> Combination of support columns and support piles. In this example, a configuration in which the support column B1 and the support pile B2 are circular steel pipes of the same type and diameter will be described as a combination of the steel material B. Other combinations will be described later.

[0016] <2> Cylinder body. The cylindrical body 10 is a joint member that is fitted onto the butt joint between the support column B1 and the support pile B2. The tube body 10 comprises at least an upper tube 11 that can be inserted onto the lower part of the support column B1, a lower tube 12 that can be inserted onto the upper part of the support pile B2, and a shelf board 13 that is inserted and integrated into the boundary between the upper tube 11 and the lower tube 12, which are arranged on the same axis. In this example, the upper cylinder 11 and the lower cylinder 12 are made of circular steel pipes of the same diameter. The shelf board 13 is a plate material that is inserted into the joint between the support column B1 and the support pile B2, and integrates the upper cylinder 11 and the lower cylinder 12 so as to be able to transmit loads. In this embodiment, a circular steel plate having a hole in the center is used as the shelf plate 13. However, the present invention is not limited to this, and may be, for example, a square steel plate.

[0017] <3> Gap adjustment material (Figure 2). The gap adjusting member 20 is a member that adjusts the gap between the inner periphery of the upper cylinder 11 and the lower cylinder 12 and the outer periphery of the support column B1 and the support pile B2. In this example, as the gap adjusting material 20, a backfilling material having a flat adjusting material body 21, an outer plate 22 and an inner plate 23 sandwiching the adjusting material body 21 from both sides, and an adjusting means 24 is used. The outer plate 22 desirably has a convex curved outer surface and is attached to the inner surface of the upper cylinder 11 or the lower cylinder 12 in surface contact therewith. The inner plate 23 desirably has a concave curved surface on its outer surface, and a combination of a plurality of the inner plates 23 defines an imaginary inner peripheral surface C, which will be described later. The gap adjuster 20 can increase or decrease the thickness between the outer plate 22 and the inner plate 23 by operating the adjustment means 24. Moreover, the thickness can be fixed by fastening the adjustment means 24, and the fixation can be released by loosening the adjustment means 24.

[0018] <3.1> Two-axis adjustable backfill material. In this embodiment, the gap adjusting material 20 is a backfilling material that can adjust the inclination of the inner plate 23 relative to the outer plate 22 about two axes perpendicular to each other. The biaxially adjustable backfilling material has a structure in which, for example, an adjusting material body 21 is made by combining two flat plates with tapered surfaces on the inside, and four long bolts are connected from the four sides toward the inside of the adjusting material body 21. Inside the adjusting material body 21, a cone is screwed onto each long bolt, and by rotating each long bolt and moving the cone along the long bolt, it is possible to increase or decrease the thickness between the outer plate 22 and the inner plate 23, and also to adjust the orientation of the inner plate 23 around two axes parallel to the outer plate 22 and fix it at any angle.

[0019] <4> Virtual inner surface (Fig. 3). In this example, a substantially circular imaginary inner peripheral surface C corresponding to the outer peripheral surface of the steel material B is defined by the inner plates 23 of the multiple gap adjusters 20. The imaginary inner circumferential surface C can be expanded or contracted in diameter by adjusting the thickness of the multiple gap adjusting materials 20 by the adjusting means 24. In addition, by adjusting the orientation of the inner plate 23 relative to the outer plate 22, the imaginary inner circumferential surface C can be inclined with respect to the inner circumferential surface of the upper cylinder 11 or the lower cylinder 12. The steel joining member 1 of the present invention uses a plurality of gap adjustment members 20 with curved surfaces to grip the support column B1 and the support pile B2 in a planar manner from the circumferential direction, thereby joining the support column B1 and the support pile B2 together and effectively transmitting the stress acting on the support column B1 to the support pile B2.

[0020] [Steel joint structure] Next, the steel joint structure of the present invention will be explained, including the construction method (FIG. 4).

[0021] <1> Erection of support piles. In this example, a case will be described in which the pile head height of the driven support pile B2 is higher than the planned height h due to a construction error, and is tilted at a certain angle with respect to the planned vertical line for driving. Here, "construction error" includes horizontal error and tilt error. The top of the inclined support pile B2 is cut off horizontally along the planned height h of the pile head (Figure 4(d)).

[0022] <2> Fixing to the support column. The steel joint member 1 is placed on a steel plate or the like laid on the ground with the upper tube 11 facing upward and the lower tube 12 facing downward (FIG. 4(a)). At this time, the adjustment means 24 of all the gap adjustment members 20 in the upper tube 11 and the lower tube 12 are loosened to reduce the thickness, and the imaginary inner circumferential surface C is expanded to a maximum diameter or a diameter close to the maximum diameter. The support column B1 is hoisted by a crane or the like, and then lowered to the center of the upper cylinder 11 until the lower end of the support column B1 abuts against the shelf board 13 (FIG. 4(b)). The adjusting means 24 of the gap adjuster 20 surrounding the lower end of the support column B1 is fastened, and all the inner plates 23 are pushed out toward the support column B1, thereby reducing the diameter of the imaginary inner circumferential surface C. Then, the multiple inner plates 23 apply planar pressure to the outer periphery of the support column B1 from the outside, so that the steel joint member 1 is firmly fixed to the support column B1. Alternatively, the upper tube 11 may be inserted onto one end of the support column B1 laid on the ground, and the steel joint member 1 may be fixed in place by assembling the upper tube 11 on the ground.

[0023] <3> Suspension of support columns. The support column B1 is lifted together with the steel joint member 1 using a crane or the like (Figure 4(c)). The support pillar B1 is moved directly above the existing support pile B2 (Figure 4(d)), and the support pillar B1 is lowered to extrapolate the bottom tube 12 of the steel joint member 1 onto the top of the support pile B2 (Figure 4(e)). When the shelf plate 13 of the steel joint member 1 abuts against the end face of the support pile B2, the descent of the support column B1 is restricted and the support column B1 is extended above the support pile B2. At this time, the lower cylinder 12 is extrapolated onto the support pile B2 at a position displaced in the direction in which the horizontal error of the support pile B2 is corrected. Since the adjustment means 24 of the gap adjusting material 20 in the lower cylinder 12 is loosened and the imaginary inner circumferential surface C has the maximum diameter, a large displacement of the joint position with the support pile B2 can be tolerated.

[0024] <4> Fixing to supporting piles. All of the gap adjusters 20 in the lower cylinder 12 are manipulated to increase their thickness, and the inner plate 23 is moved toward the outer circumferential surface of the support pile B2. As a result, the imaginary inner surface C reduces in diameter, and the inner plate 23 abuts against the support pile B2 at a position and angle corresponding to the horizontal position and inclination angle of the support pile B2, thereby embracing the outer circumferential surface of the support pile B2 in a planar manner. Once the horizontal and tilt errors of the support pillar B1 have been corrected in this manner, the adjustment means 24 of all of the gap adjusters 20 in the lower cylinder 12 are fastened to rigidly connect the lower cylinder 12 and the support pile B2 so that they cannot be displaced. By using the above simple procedure, the horizontal error and tilt error of the existing support pile B2 can be absorbed, and the support column B1 can be erected in the correct position. After completing the connection between the support column B1 and the support pile B2, the support column B1 is detached from the crane or the like.

[0025] <5> Fine-tuning the support columns. If the amount of correction of the construction error is insufficient using only the gap adjuster 20 in the lower cylinder 12, the gap adjuster 20 in the upper cylinder 11 is loosened again, and the horizontal position and angle of the support pillar B1 are fine-tuned. The steel connecting member 1 is fixed immovably to the upper part of the support pile B2 by the lower tube 12 and multiple gap adjustment members 20, so that the horizontal position and angle of the support column B1 can be fine-tuned by obtaining a compressive reaction force from the support pile B2 and the steel connecting member 1 (Figure 4(f)). After completing the fine adjustment, all of the gap adjusters 20 in the upper cylinder 11 are tightened again to rigidly connect the upper cylinder 11 and the support column B1.

[0026] <6> Readjustment after joining. Even after the support column B1 and the support pile B2 are joined, the horizontal adjustment and angle adjustment of the support column B1 with respect to the support pile B2 can be performed by loosening the adjustment means 24 of the gap adjusting material 20 again.

[0027] <7> Functions when in service. The steel joint structure A of the present invention is a structure in which the outer peripheries of the support column B1 and the support pile B2 are gripped in a planar manner and joined, making it possible to transmit stress evenly from the support column B1 to the support pile B2. Therefore, the support column B1 and the support pile B2 are less likely to deform, and can be reused after dismantling. In addition, when a horizontal force acts on the support column B1 due to an earthquake or the like, the horizontal force can be converted into an axial pushing force on the support pile B2 by the principle of leverage with the gap adjustment material 20 as the fulcrum. This makes it possible to prevent the steel joint member 1 from falling off the support column B1 and the support pile B2.

[0028] <8> Function when dismantled. When dismantling a temporary pier or bridge, the connection between the support column B1 and the support pile B2 can be released by a simple operation of loosening the adjustment means 24 of the gap adjustment material 20. In addition, the steel connection member 1 that has been separated and removed can be used repeatedly. EXAMPLES

[0029] [Example of combining circular steel pipes of different diameters] In the first embodiment, the steel material B is a combination of circular steel pipes having the same diameter, but the present invention is not limited to this. When the support column B1 and the support pile B2 are a combination of deformed steel pipes, the upper tube 11 and the lower tube 12 are set to have diameters corresponding to the respective diameters. Furthermore, since the virtual inner surface C of the steel material connecting member 1 of the present invention can be freely expanded or contracted, if the diameter difference between the support column B1 and the support pile B2 is small, the diameter difference can be absorbed by the gap adjustment material 20, and a steel material connecting member 1 of the same diameter can be reused. EXAMPLES

[0030] [Examples other than circular steel pipes] In Example 1, the steel material B was a circular steel pipe, but the present invention is not limited to this. At least one of the support column B1 and the support pile B2 may be a square steel pipe, an H-shaped steel, or the like. In this example, the shapes of the upper cylinder 11 and the lower cylinder 12 are made rectangular or the like to match the cross-sectional shapes of these steel materials B (FIG. 5). Furthermore, the surfaces of the outer plate 22 and the inner plate 23 of the gap adjuster 20 are flat rather than curved, and the sides of the square steel pipes or the like are supported and fixed in place. EXAMPLES

[0031] [Example in which gap adjuster is provided only at one end] In the first embodiment, the gap adjusters 20 are provided inside both the upper cylinder 11 and the lower cylinder 12, but the present invention is not limited to this. If the gap adjusting material 20 is provided on at least one of the upper cylinder 11 and the lower cylinder 12, construction errors can be corrected. In this case, the side of the upper cylinder 11 and the lower cylinder 12 on which the gap adjusting member 20 is not installed is configured to be fixed to the steel material B by a fixing means 30 (FIG. 6). The fixing means 30 is, for example, a plurality of bolts screwed inward from the outer periphery of the lower cylinder 12. When the support pile B2 is inserted into the lower cylinder 12 and then the plurality of bolts are screwed in, the bolts press against the circumferential surface of the support pile B2, thereby fixing it. The fixing means 30 may be of any other known structure, such as filling the gap between the steel material B and the tube body 10 with concrete. EXAMPLES

[0032] [Other Examples of Gap Adjusters] In the first embodiment, a biaxially adjustable backfilling material is used as the gap adjusting material 20, but the present invention is not limited to this. For example, a wedge-type back-filling material may be used as the gap adjusting material 20. Wedge-type backfilling material is a backfilling material in which a thin plate with a wedge-shaped cross section is inserted between two flat plates to adjust the thickness. Wedge-type backfilling material is attached to the inner circumference of the upper cylinder 11 and / or the lower cylinder 12 at equal intervals in the circumferential direction. When steel material B is a circular steel pipe, the inner surface of the wedge-type backfilling material can be made to have a concave curved surface, thereby forming a virtual inner surface C between multiple wedge-type backfilling materials. In this example, the end of steel material B is brought into contact with shelf board 13 within imaginary inner surface C, and then a wedge-shaped thin plate is hammered between the flat plates of the wedge-type backfilling material to eliminate the gap between steel material B and steel material B, thereby firmly fixing steel material B. The other steps are the same as in the first embodiment. Alternatively, a hydraulic jack or a rod that is expandable in the longitudinal direction may be used as the gap adjuster 20. In short, it is only necessary that the gap between the inner circumference of the upper cylinder 11 or the lower cylinder 12 and the outer circumference of the steel material B can be adjusted. [Explanation of symbols]

[0033] 1 Steel joint members 10. Cylinder body 11 Upper tube 12 Lower cylinder 13 Shelf 20 Gap adjustment material 21 Adjustment material body 22 Outer plate 23 Inner plate 24 Adjustment means 30 Fixing means A Steel joint structure B Steel material B1 Support column B2 Support pile C Virtual inner surface h Planned height

Claims

1. A joint member for joining a vertically oriented support column and a support pile, A tube body having an upper tube that can be inserted onto the lower part of the support column, a lower tube that can be inserted onto the upper part of the support pile, and a shelf plate that is inserted and integrated into the boundary between the upper tube and the lower tube that are arranged on the same axis; A plurality of gap adjusting members capable of increasing or decreasing their own thickness, The plurality of gap adjusting members are attached to the inner surface of at least one of the upper cylinder and the lower cylinder. Steel joining components.

2. The gap adjusting material has a curved surface on the inside, thereby defining a virtual inner circumferential surface corresponding to the outer circumferential surfaces of the support columns and the support piles on the inside of the plurality of gap adjusting materials, The steel joint member according to claim 1.

3. The gap adjusting member is characterized in that it comprises an outer plate, an inner plate, and an adjustment means capable of increasing or decreasing a thickness from the outer plate to the inner plate, and the inner plate can be tilted around two axes perpendicular to the outer plate. The steel member according to claim 1 .

4. A steel joint structure that joins the upper part of a vertical support column and a support pile, The steel joint member according to any one of claims 1 to 3, The lower end surface of the support column contacts the upper surface of the shelf plate inside the upper tube, The upper end surface of the support pile contacts the lower surface of the shelf plate inside the lower cylinder, The outer periphery of the support column and the outer periphery of the support pile are gripped in a planar manner by the plurality of gap adjustment materials, so that the support column and the support pile are integrally joined and the support column is joined to the support pile so as to be horizontally and inclinedly adjustable. Steel joint structure.

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