JP7098079B1 - Steel joint structure - Google Patents

Abstract

An object of the present invention is to provide a joining structure of steel materials that can join upper and lower steel materials in the vertical direction without welding, and that can ensure performance in both compressive axial force/bending and tensile axial force/bending. A support pile made of steel driven into the ground; a cylindrical joint socket that can be mounted over a butt joint of a support column made of steel placed above the support pile; and a steel joining structure for integrally joining an upper portion of the supporting pile and a lower portion of the supporting pile using a tensile member that connects the supporting pillars, wherein the joint socket is mounted on the upper portion of the supporting pile. joining of steel materials, having a lower cylinder that can be mounted, an upper cylinder that can be attached to the lower part of the support column, and a diaphragm that is integrated by being interposed in the boundary between the lower cylinder and the upper cylinder that are positioned on the same axis. structure. [Selection drawing] Fig. 1

Description

The present invention relates to a steel material joining structure applicable to joining support piles and support columns such as temporary gantry and temporary bridge.

When constructing or repairing roads, etc., temporary bridges may be constructed on the side of the road as passages for personnel and vehicles, and as waiting areas. The temporary bridge will be in service during the construction period and then demolished.
The substructure of the temporary bridge uses steel materials such as H-shaped steel and steel pipes as support columns, and these support columns are joined to the upper part of the support piles driven into the ground.
All-around welding is known as a means of joining support piles and support columns, but since it is a large-scale work such as the need to separately assemble scaffolding for welding, especially in mountainous slopes, welding is used. Various mechanical joint structures have not been proposed.

In Patent Documents 1 and 2, the ends of the upper and lower steel pipes are processed to form a pair of outer fitting ends and inner fitting ends, and the outer fitting ends and the inner fitting ends are fitted to each other. Disclosed is a mechanical joint that is rotated and joined around a shaft core.
Further, in Patent Document 3, a cylindrical joint socket having an inner diameter larger than the outer diameter of the upper and lower steel pipes is used, and an adjusting bolt screwed into the outer joint socket straddling the butt portion of the upper and lower steel pipes is used. , A joint structure that adjusts the gap between a steel pipe and a joint socket is disclosed.

Japanese Unexamined Patent Publication No. 2016-29250 Japanese Unexamined Patent Publication No. 2020-20216 Japanese Unexamined Patent Publication No. 2018-204379

The conventional joint structure has the following problems.
<1> For the substructure of the temporary bridge, after driving the steel pipe to be the support pile, it is necessary to cut the pile head in order to adjust the height and inclination of the driven steel pipe end face (pile head). Therefore, mechanical joints such as those in Patent Documents 1 and 2 in which the end face of the steel pipe is processed in advance cannot be used.
<2> Vehicles and the like are loaded on the upper part of the temporary bridge, and bending acts as the bridge moves. Therefore, the compression axial force due to the weight of the load and the bending due to the movement act simultaneously on the substructure. In addition, as the height of the temporary bridge increases, the overturning moment due to bending increases, so that the tensile axial force and bending may act simultaneously locally. In the joint structure of Patent Document 3, the ends of the upper and lower steel pipes are only in contact with the diaphragm (shelf plate), and there is no mechanism for resisting the tensile axial force, so that the temporary bridge that can be used is limited.

The present invention has been made in view of the above points, and an object thereof is to provide a joint structure of at least one of the following steel pipes.
<1> The upper and lower steel materials can be joined in the vertical direction without welding. <2> The pile head can be cut at the site. <3> The performance of both compression axial force / bending and tensile axial force / bending can be guaranteed.

The first invention of the present application is a support pile made of a steel material driven into the ground, a tubular joint socket that can be exteriorized straddling a butt portion of a support pillar made of a steel material placed above the support pile, and the support. It is a joint structure of a steel material that integrally joins the upper part of the support pile and the lower part of the support column by using a pulling material that connects the pile and the support column, and the joint socket is the support pile. It has a lower cylinder that can be exteriorized at the upper part, an upper cylinder that can be exteriorized at the lower part of the support pillar, and a diaphragm that is interposed and integrated at the boundary between the lower cylinder and the upper cylinder located on the coaxial line. Provides a joint structure of steel materials.
The second invention of the present application is characterized in that two or more of the tension members are provided in the joint structure of the steel material of the first invention.
In the third invention of the present application, in the joint structure of the steel material of the second invention, the support pile and the fixing band having a plan-view arc-shaped band portion and a tension material pedestal projecting from the band portion in the outer peripheral direction are provided. The lower part of the tension material is fixed to each of the support columns, the lower part of the tension material is fixed to the tension material pedestal of the fixing band fixed to the support pile, and the upper part of the tension material is the tension of the fixing band fixed to the support column. It is characterized by being fixed to a material pedestal.
According to the fourth aspect of the present invention, in the joint structure of the steel material of the third invention, the tension material has threaded portions at the upper end and the lower end, and the threaded portion is inserted into the tension material pedestal and screwed to the upper end and the lower end. It is characterized in that the tension material nut is tightened and connected to the support pile and the support column via the fixing band.
In the fifth aspect of the present invention, in the steel joint structure of the fourth aspect, stoppers are provided so as to project from the upper part of the fixing band on the outer periphery of the support pile and the lower part of the fixing band on the outer periphery of the support column. It is a feature.
The sixth invention of the present application is characterized in that, in the joint structure of the steel material of the fifth invention, the tensile material penetrates the diaphragm.
According to the seventh invention of the present application, in the joint structure of the steel material of the sixth invention, the tension material is a structure in which two tension rods are connected by a high nut, and the high nut is located below the diaphragm. It is characterized by.
In the eighth invention of the present application, in the joint structure of the steel material of the seventh invention, the inner peripheral surface of the band portion or the outer peripheral surface of the support pile and the support column is anti-slip processed, or the inner circumference of the band portion is formed. It is characterized in that a non-slip member is provided between the surface and the outer peripheral surface of the support pile or the support pillar.
In the ninth invention of the present application, in the joint structure of the steel material according to any one of the third invention to the eighth invention, the band portion has a substantially semicircular shape in a plan view, and the fixing band is fixed to both ends of the band portion. It is characterized by having a fixing plate, a bolt penetrating the fixing plate facing the support pile or the support column when the band portion is arranged point-symmetrically with respect to the axis of the support pile, and a nut screwed to the bolt. And.
In the tenth invention of the present application, in the joint structure of the steel material of the ninth invention, a strip-shaped filler material having a notch is arranged between the fixing band and the support pile or the support pillar, and the filler material is said to be the same. It is characterized in that the welded portion on the outer peripheral surface of the support pile or the support column fits in the notch.

The present invention has at least one of the following effects.
<1> Welding is not required for the connection of the support pile, the support column and the joint socket, the support pile, the support column and each fixing band, and each fixing band and the tension material. For this reason, the work of separately assembling scaffolding for welding does not become a large scale, and the work can be carried out in a short construction period.
<2> Since the lower fixing band is fixed to the support pile at the site, it can be used for the support pile in which the pile head is cut at the site.
<3> Since the support pile and the support column are butted by the joint socket, the compression axial force is transmitted through the joint socket. Further, since the support pile and the support column are connected by the tension material, the tension material functions as a strength member for tension and bending.

Perspective view of the joint structure of the steel material of the present invention Longitudinal sectional view of the joint structure of the steel material of the present invention. Explanatory drawing of support pillar and fixing adjustment bolt Explanatory drawing of the fixed band of this invention Explanatory drawing of filler member of this invention Perspective view of the tension material of the present invention Explanatory drawing of arrangement of tension material of this invention Explanatory drawing of the joining method of the joining structure of this invention (1) Explanatory drawing of the joining method of the joining structure of this invention (2)

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<1> Combination of Support Pile and Steel Material of Support Column In the first embodiment, a mode in which the support pile 10 and the support column 20 are steel pipes of the same type and the same diameter will be described.

<2> Joint structure of steel material In the present invention, the cylindrical joint socket 30, the support pile 10 and the lower fixing band 40 fixed to the outer periphery, the upper fixing band 50 fixed to the outer periphery of the support column 20, and the lower fixing band 40 and the upper part. A tension member 60 connecting the fixing bands 50 is used to integrally join the lower support piles 10 and the upper support columns 20 butted in the vertical direction (FIGS. 1 and 2).

<3> Joint socket The joint socket 30 has a lower cylinder 31 that can be exteriorized on the upper part of the support pile 10, an upper cylinder 32 that can be exteriorized on the lower part of the support pillar 20, and a lower cylinder 31 and an upper cylinder 32 located on the coaxial line. It is composed of a diaphragm 33 which is integrated with the boundary portion of the above.
In this embodiment, the lower cylinder 31 and the upper cylinder 32 are each formed of steel pipes having different diameters.
The diaphragm 33 is a plate material that integrates the lower cylinder 31 and the upper cylinder 32 having different diameters so as to be able to transmit a load and intervenes between the butt ends of the support pile 10 and the support pillar 20, and is formed of, for example, a steel plate.
The shape of the diaphragm 33 is not limited to the square shape shown in the figure, and may be a disk shape.
The joint socket 30 only inserts and intervenes the support pile 10 and the support column 20, and does not require welding.

<4> Dimensional relationship between steel material and each cylinder Since the lower cylinder 31 and upper cylinder 32 of the joint socket 30 are exteriorized on the support pile 10 and the support pillar 20, respectively, the inner diameter of the lower cylinder 31 and the inner diameter of the upper cylinder 32 are the support piles. It shall be larger than the diameter of 10 and the support column 20.
In the present invention, in order to absorb the construction error of the support pile 10 into the joint socket 30, the inner diameter of the lower cylinder 31 and the inner diameter of the upper cylinder 32 are not the same diameter but different diameters, and the lower fixing adjustment bolt 34 and the upper fixing are combined. An adjusting bolt 35 is provided.

<5> Fixing adjustment bolt The lower fixing adjustment bolt 34 and the upper fixing adjusting bolt 35 are tightened so that the tips thereof come into contact with the support pile 10 and the support pillar 20 (FIG. 3). As a result, a function of adjusting the horizontal position and angle of the support pile 10 and the support pillar 20 in cooperation with the joint socket 30 and a function of holding the positions of the support pile 10 and the support pillar 20 after the adjustment (positioning function). , Has the function of transmitting compression axial force and bending stress. If these functions are not required, the fixing adjustment bolts 34 and 35 may not be used.
Since the fixing adjustment bolts 34 and 35 do not penetrate the support pile 10 and the support pillar 20, no special processing such as opening bolt holes in the support pile 10 and the support pillar 20 is required.
The fixing adjustment bolts 34 and 35 may be screwed into the screw holes directly formed in the cylinders 31 and 32, or may be screwed into a nut (not shown) fixed to the outer peripheral surface of the cylinders 31 and 32 by welding or the like. It may be screwed.

<6> Fixed band The lower fixing band 40 fixed to the outer periphery of the support pile 10 and the upper fixing band 50 fixed to the outer periphery of the support pillar 20 have the same shape, and the lower band portion 41 or the upper band having a substantially semicircular shape in a plan view. Two portions 51 are combined and wound around the outer circumferences of the support pile 10 and the support pillar 20, respectively (FIG. 4).
The lower band portion 41 and the upper band portion 51 may be fixed to the support pile 10 and the support pillar 20 by welding, respectively, but in this embodiment, the lower fixing plate 42 and the upper band portion 42 are attached to both ends of the band portions 41 and 51, respectively. A fixing plate 52 is provided, and a lower bolt hole 421 and an upper bolt hole 521 are formed in the fixing plates 42 and 52, respectively, and two strips 41 and 51 and the fixing plates 42 and 52 at the ends thereof are combined. By screwing and tightening the nuts 423 and 523 to the bolts 422 and 522 that are inserted into the bolt holes 421 and 521, the nuts 423 and 523 are wound around the entire circumference of the support pile 10 and the support pillar 20 and fixed. Since it is fixed by bolts 422, 522 and nuts 423, 523, welding is not required and it can be fixed manually at the site.
At this time, the inner peripheral surfaces of the band portions 41 and 51 and the outer peripheral surfaces of the support pile 10 and the support pillar 20 in contact with the band portions 41 and 51 are the outer peripheral surfaces of the support pile 10 and the support pillar 20 when a force is applied. Anti-slip processing may be performed to increase the frictional force so that the fixing bands 40 and 50 do not move along the above. Anti-slip processing includes roughening the surface roughness, thermal spraying of a metal such as aluminum, painting with an inorganic zinc rich paint, and rusting using a rusting agent. Further, a non-slip member (not shown) may be provided between the support pile 10 and the support pillar 20. Examples of the non-slip member include a steel plate having a non-slip treatment on at least one side thereof.
In this embodiment, two strips 41 and 51 having a substantially semicircular shape in a plan view are combined and wound around the outer periphery of the support pile 10 and the support column 20 to form a substantially circular shape, and fixed. The band portions 41 and 51 divided into arcs may be combined and wound around the outer periphery of the support pile 10 and the support pillar 20 to be fixed in a substantially circular shape. Further, the band portions 41 and 51 are not limited to the form of being divided and fixed by the bolts 422 and 522 and the nuts 423 and 523, and some of the end portions may be connected to each other by a hinge or the like so as to be openable and closable.

<6.1> Filler material For example, when a welded steel pipe is used as a support pile 10 or a support column 20, in order to attach the fixed bands 40 and 50 from above the straight seam or the spiral seam, among the fixed bands 40 and 50. There is a possibility that the peripheral surface and the outer peripheral surfaces of the support pile 10 and the support pillar 20 are lifted without being in close contact with each other, and the contact area is reduced, so that the frictional force is not sufficiently exerted.
Therefore, the strip-shaped filler material 80 may be arranged between the support pile 10, the support pillar 20, and the strips 41, 51 of the fixing bands 40, 50 (FIG. 5).
The filler material 80 has a notch 81 that matches the welded portion 11 on the outer peripheral surface of the support pile 10 and the support pillar 20, and the notch 81 and the welded portion 11 are combined on the outer peripheral surface of the support pile 10 (support pillar 20). The filler material 80 is wound, and the lower fixing band 40 (upper fixing band 50) is wound from above. By making the thickness of the filler material 80 thicker than that of the welded portion 11 so as to cover the welded portion 11, the contact area between the support pile 10, the support column 20 and the filler material 80, and the filler material 80 and the fixing bands 40, 50 is provided. Can be secured to a large extent.

<7> Tension material pedestal Each band portion 41, 51 has a lower tension material pedestal 43 and an upper tension material pedestal for connecting the tension material 60 so as to project radially from the outer peripheral surface of the support pile 10 and the support pillar 20. 53 is provided.
In this embodiment, each of the tension material pedestals 43 and 53 has a long hole-shaped lower tension material insertion hole 431 and an upper tension material insertion hole 531 which are long in the radial direction.
Since each of the tension material pedestals 43 and 53 protrudes from the support pile 10 and the support pillar 20, even if the joint socket 30 has a diameter larger than that of the support pile 10 and the support pillar 20, the upper and lower parts of the tension material 60 are connected respectively. Can be done.

<8> Tension material The tension material 60 is made of steel bar, and by connecting both ends to the lower tension material pedestal 43 and the upper tension material pedestal 53, the support pile 10 and the support column 20 are connected via the fixing bands 40 and 50, respectively. is doing.
The tension material 60 may be connected to the lower tension material pedestal 43 and the upper tension material pedestal 53 by welding, but in this embodiment, the threaded portions 62 provided at both ends of the shaft portion 61 are under-tensioned by the lower tension material pedestal 43. By inserting the material insertion hole 431 and the upper tension material pedestal 53 into the upper tension material insertion hole 531 and screwing and tightening the tension material nut 63 into the threaded portion 62, the lower fixing band 40 and the upper fixing band 50 are pulled together. The support pile 10 and the support pillar 20 are connected via the fixing bands 40 and 50. Since it is connected by tightening the tension material nut 63, welding is not required and it can be connected on site.
When a tensile axial force acts on the support column 20, it is transmitted from the upper fixing band 50 to the support pile 10 via the tension member 60 and the lower fixing band 40.
In this embodiment, the tension member 60 is configured by connecting two tension rods 611 having male threads at both ends with a high nut 64 (FIG. 6).

<8.1> Positional relationship between the tension material and the diaphragm The tension material 60 is inserted through the diaphragm 33 of the joint socket 30.
The positions of the support pile 10, the support column 20, the joint socket 30, and the fixing bands 40 and 50 can be aligned with the positions of the tension member 60 inserted through the diaphragm 33.
Further, since only the diaphragm 33 is inserted, the tensile axial force does not act on the joint socket 30, and the design items of the joint socket 30 are only the compression axial force and the bending stress, and it is necessary to consider the tensile axial force. There is no such thing, and it can be a simple configuration.

<9> Number of tensile materials As shown in Fig. 7, when bending is applied while a tensile axial force is generated, an additional axial force due to bending is generated on the bending tensile side in addition to the original tensile axial force. , At least one tension material 60 is required.
Further, on the bending compression side, the tensile axial force acting on the tensile member 60 is released, but it depends on the magnitude of bending whether the tensile axial force is released until it becomes 0, so it is also on the bending compression side. It is preferable to arrange at least one tension member 60.
In this embodiment, four lower tension material pedestals 43 and four upper tension material pedestals 53 are provided on one lower fixing band 40 and four upper fixing bands 50, and four tension materials 60 are arranged at intervals of 90 degrees. As a result, two or more tension members are arranged on the bending tension side and the compression side, respectively, and the axial force and bending can be borne by each tension member 60.

<10> Stopper 70 may be provided at the upper part of the lower fixing band 40 on the outer circumference of the support pile 10 and the lower part of the upper fixing band 50 on the outer circumference of the support pillar 20.
The stopper 70 can prevent the fixing bands 40 and 50 from being displaced from each other and falling off from the support pile 10 and the support pillar 20 when a tensile axial force more than expected is applied.
The stopper 70 may be in contact with or separated from the lower fixing band 40 and the upper fixing band 50.

<11> Joining Method With reference to FIGS. 8 and 9, a method of joining the support pile 10 and the support column 20 using the joint socket 30, the fixing bands 40 and 50, and the tension member 60 will be described. The joining method described below is an example, and the joining method for constructing the above-mentioned joining structure is not limited to this.

<11.1> Suspension of support columns After driving the lower part of the steel pipe to be the support pile 10 into the ground, the pile head is cut horizontally to adjust the height and inclination of the pile head as necessary.
Then, the upper cylinder 32 is inserted until the diaphragm 33 comes into contact with the lower end of the support pillar 20, and a plurality of upper fixing adjusting bolts 36 are tightened, and the joint socket 30 is externally and rigidly connected to the lower end of the support pillar 20.
Further, the upper fixing band 50 is fixed to the outer periphery of the upper support column 20 of the outer joint socket 30, and the threaded portion 62 at the upper end of the pulling material 60 inserted into the diaphragm 33 is attached to the upper pulling material pedestal 53 of the upper fixing band 50. It is inserted into the upper tension material insertion hole 531 and the tension material nut 63 is screwed to connect the tension material 60 to the upper fixing band 50. Since the upper lumber insertion hole 531 of the upper lumber pedestal 53 has an elongated hole shape, the radial distance of the lumber 60 with respect to the axial center of the support column 20 can be adjusted to the position inserted through the diaphragm 33.
In the tension material 60 of this embodiment, two tension rods 611 are connected by a high nut 64, but by arranging the high nut 64 at the lower part of the diaphragm 33, the support column 20 is suspended via the high nut 64. The joint socket 30 can be supported by the tension material 60.
Then, the support pillar 20 suspended by a crane or the like is moved directly above the existing support pile 10, the support pillar 20 is lowered, and the lower cylinder 31 of the joint socket 30 is exteriorized on the upper portion of the support pile 10.
When the diaphragm 33 of the joint socket 30 comes into contact with the upper end of the support pile 10, the descent of the support pillar 20 is restricted, and the support pillar 20 is extended above the support pile 10.
After that, the lower fixing adjusting bolt 34 is tightened to rigidly connect the support pile 10 and the lower cylinder 31.
When the stopper 70 is attached to the support pile 10 and the support pillar 20, it may be attached by welding at the site, or it may be carried into the site in a state where it is attached in advance in consideration of the cutting length of the support pile 10. ..

<11.2> Connection of support pile and support pillar by pulling material A lower fixing band 40 is placed on the outer circumference of the supporting pile 10 at the lower part of the outer lower cylinder 31, and a threaded portion 62 at the lower end of the pulling material 60 is inserted into the lower pulling material insertion hole. Fix it while inserting it through 431. Since the lower fixing band 40 of the pulling material 60 is fixed to the support pile 10 at the site, it can correspond to the support pile 10 in which the pile head is cut.
Then, the tension material nuts 63 are tightened to the upper and lower screw portions 62 of the tension material 60, and the tension material nuts 63 are screwed and tightened to pull the lower fixing band 40 and the upper fixing band 50, so that each fixing band 40, The support pile 10 and the support pillar 20 are connected via 50.
Since the cutting length of the support pile 10 when the pile head is cut horizontally differs depending on the pile, the distance between the lower fixing band 40 and the upper fixing band 50 differs for each support pile 10, but the tensile material 60 of the present invention is used. Can cope with a change in the distance between the lower fixing band 40 and the upper fixing band 50 by the amount of tightening of the tension material nut 63 to the upper and lower screw portions 62.

[Characteristics of joint structure]
<1> Compression Axial Force The compression axial force due to the weight of the support column 20 and the loading load always acts on the joint between the support pile 10 and the support column 20.
Since the upper and lower surfaces of the diaphragm 33 of the joint socket 30 are interposed between the upper end of the support pile 10 facing each other and the facing surface of the lower end of the support pillar 20, the compression axial force is transmitted through the diaphragm 33. The support pile 10 and the support pillar 20 communicate with each other.
The compression axial force does not act directly on the lower cylinder 31 or the upper cylinder 32, nor does it act on the lower fixing adjustment bolt 34 and the upper fixing adjusting bolt 35 screwed to the lower cylinder 31 and the upper cylinder 32.

<2> Tensile axial force and bending force Since the support pile 10 and the support column 20 that are butted against the joint socket 30 are connected by the tension material 60, it is possible to prevent the support pile 10 and the support column 20 from coming off with respect to the joint socket 30. Instead, the tension member 60 functions as a strength member for tension and bending of the joint.
Further, when the lower fixing adjustment bolt 34 or the upper fixing adjusting bolt 35 is used, the bending force can be transmitted between the support pile 10 and the support column 20 through the fixing adjustment bolts 34 and 35 and the joint socket 30. The strength of the joint socket 30 resists the bending force.

<3> No welding configuration The support pile 10 and the support column 20 are only abutted against the diaphragm 33 of the joint socket 30 and are not welded. Further, since the fixing bands 40 and 50 are fixed by bolts 422 and 522 and nuts 423 and 523, and the pulling material 60 is fixed by tightening the pulling material nut 63, welding is not required.
For this reason, the work of separately assembling scaffolding for welding does not become a large scale, and the work can be carried out in a short construction period.

<4> Disassembly and separation When dismantling a temporary pier, temporary bridge, etc., the fixing adjustment bolts 34 and 35 of the joint socket 30, the upper and lower tension material nuts 63 of the tension material 60, and the nuts of the fixing bands 40 and 50. The joint between the support pile 10 and the support column 20 can be released by a simple operation of loosening the 423 and 523. The separated and removed joint socket 30, the fixing bands 40 and 50, and the tension material 60 can be reused.

10 ... Support pile 20 ... Support pillar 30 ... Joint socket, 31 ... Lower cylinder, 32 ... Upper cylinder, 33 ... Diaphragm, 34 ... Lower fixing adjustment bolt, 35. .. Upper fixing adjustment bolt 40 ... Lower fixing band, 41 ... Lower band part, 42 ... Upper fixing plate, 421 ... Upper bolt hole, 422 ... Bolt, 423 ... Nut, 43 ... Lower tension material pedestal, 431 ... Lower tension material insertion hole 50 ... Upper fixing band, 51 ... Upper band part, 52 ... Lower fixing plate, 521 ... Lower bolt hole, 522 ... Bolt, 523 ... Nut, 53 ... Upper tension material pedestal, 513 ... Upper tension material insertion hole 60 ... Tension material, 61 ... Shaft, 611 ... Tension rod , 62 ... Threaded part, 63 ... Tension material nut, 64 ... High nut 70 ... Stopper 80 ... Filler material, 81 ... Notch

Claims (10)

A support pile made of steel that has been driven into the ground, and a cylindrical joint socket that can be exteriorized across the butt portion of the support pillar made of steel that is placed above the support pile.
It is a joint structure of a steel material that integrally joins the upper part of the support pile and the lower part of the support pillar by using a pulling material that connects the support pile and the support pillar.
The joint socket is interposed at the boundary between the lower cylinder that can be exteriorized on the upper part of the support pile, the upper cylinder that can be exteriorized on the lower part of the support pillar, and the lower cylinder and the upper cylinder located on the coaxial line. With an integrated diaphragm
Joint structure of steel materials. The joint structure of the steel material according to claim 1.
The tension material is characterized in that two or more are provided.
Joint structure of steel materials. In the joint structure of the steel material according to claim 2,
A fixing band having a plan-view arc-shaped band portion and a pulling material pedestal projecting from the band portion in the outer peripheral direction is fixed to each of the support pile and the support column.
The lower portion of the tension material is fixed to the tension material pedestal of the fixing band fixed to the support pile.
The upper portion of the pulling material is fixed to the pulling material pedestal of the fixing band fixed to the support column.
Joint structure of steel materials. In the joint structure of the steel material according to claim 3,
The tension material has threaded portions at the upper and lower ends, the threaded portions are inserted into the tension material pedestal, the tension material nuts screwed to the upper ends and the lower ends are tightened, and the support pile and the support pile and the support pile are passed through the fixing band. It is characterized in that it is connected to the support column.
Joint structure of steel materials. In the joint structure of the steel material according to claim 4,
A stopper is provided so as to project from the upper portion of the fixing band on the outer periphery of the support pile and the lower portion of the fixing band on the outer periphery of the support column.
Joint structure of steel materials. In the joint structure of the steel material according to claim 5,
The pulling material is characterized by penetrating the diaphragm.
Joint structure of steel materials. In the joint structure of the steel material according to claim 6,
The tension material has a structure in which two tension rods are connected by a high nut.
The high nut is characterized by being located at the bottom of the diaphragm.
Joint structure of steel materials. In the joint structure of the steel material according to claim 7,
The inner peripheral surface of the band portion or the outer peripheral surface of the support pile and the support pillar is anti-slip processed, or the inner peripheral surface of the band portion is slipped between the support pile or the outer peripheral surface of the support pillar. It is characterized by providing a stopper member.
Joint structure of steel materials. In the joint structure of the steel material according to any one of claims 3 to 8.
The band portion has a substantially semicircular shape in a plan view.
The fixing band includes a fixing plate fixed to both ends of the band portion, a bolt penetrating the fixing plate facing the band portion when the band portion is arranged point-symmetrically with respect to the axis of the support pile or the support column, and the bolt. It is characterized by having a nut, which is screwed into a bolt.
Joint structure of steel materials. In the joint structure of the steel material according to claim 9,
A band-shaped filler material having a notch is placed between the fixing band and the support pile or the support column.
It is characterized in that the welded portion on the outer peripheral surface of the support pile or the support column is fitted in the notch of the filler material.
Joint structure of steel materials.

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