JP2021067040A - Connection structure of h-steel - Google Patents

Abstract

To provide a connection structure of H-steel capable of connecting respective H-steels without requiring accurate positioning of end faces of the H-steels and without using a connection plate.SOLUTION: When a first H-steel 2 and a second H-steel 3 are connected in the axial direction of the longitudinal direction, a first slit part 24 for inserting a web 33 of the second H-steel 3 from an end part is formed at an end part of a first flange part 21 in the first H-steel 2. A notch part 41 for preventing interference between a web 23 of the first H-steel 2 and the web 33 or a second flange part 32 of the second H-steel 3 is provided in the web 23, and the first H-steel 2 and the second H-steel 3 are fixed by a bolt 51 and a nut 52 in an overlapped state.SELECTED DRAWING: Figure 1

Description

The present invention relates to a connecting structure of H-steel in which H-steel and H-steel are connected along an axis in the longitudinal direction. More specifically, the H-steel and H-steel are connected without using a connecting plate or the like. It relates to a connecting structure of H-steel that can be connected.

Conventionally, H steel has been used when forming a frame of a steel frame structure, and has been used as a column, a beam, a bridge aggregate, a reinforced structure of a slope, and the like.

When such H-steel is used, generally, the end faces of the H-steel are positioned so as to be in close contact with each other, and in that state, the connecting plate is brought into close contact with the upper flange portion and the lower flange portion to bring bolts and nuts. Or, the connecting plates are brought into close contact with the front and back of the web and fixed with bolts and nuts.

Japanese Unexamined Patent Publication No. 2013-57233

However, when the H steel and the H steel are connected in this way, there are the following problems.

That is, when connecting the H-steel and the H-steel, it was necessary to accurately match the end faces of the H-steel while suspending the H-steel with a crane and to fix them with bolts or nuts via a connecting plate. However, although it is necessary to manually match the end faces of the H steels suspended by a crane, the end faces of the H steels are accurate because the H steels are very heavy. There is a problem that it takes a long time to perform the work of matching with the above and the work of bringing the connecting plates into close contact with each other and fastening them with bolts.

Further, when connecting H-steel and H-steel, a plurality of connecting plates are required, so that the cost of the member and the work for carrying and fastening the plurality of connecting plates are very troublesome. There was a problem such as.

Therefore, the present invention has been made by paying attention to the above problems, and it is not necessary to accurately position the end faces of the H steel and the H steel, and the H steel and the H steel are connected without using a connecting plate. It is an object of the present invention to provide a connecting structure of H-steel made possible.

That is, in order to solve the above problems, the present invention provides first H steel and second H steel having a web between the first flange portion and the second flange portion provided in parallel in the axial direction in the longitudinal direction. In the connecting structure of the H steel to be connected to the first H steel, the web of the second H steel is formed along the axial direction from the end portion of the first flange portion of the first H steel portion so that the web of the second H steel can be inserted from the end portion. One slit portion and a retracting portion that saves interference between the web and the second flange portion of the second H steel and the first H steel when the web of the second H steel is inserted into the first slit portion. A fixing portion for fixing the first H steel and the second H steel is provided in a state where the first flange portion and the second flange portion are overlapped by the first slit portion and the retracting portion. It was done.

In this way, if the web of the other H steel is inserted into the first slit portion provided in one H steel, the ends of the respective H steels can be connected in an overlapping state. Therefore, it is not necessary to accurately position each end face and connect them with a connecting plate as in the conventional case. As a result, the connecting operation can be easily performed, and the connecting plate is not required, so that the cost can be reduced.

Further, in such an invention, the first slit portion is formed at the center position of the first flange portion in a direction orthogonal to the axial direction along the longitudinal direction, and the retracted portion is formed of the web of the first H steel. Is cut out from the end portion by a length corresponding to the first slit portion.

With this configuration, when connecting the second H steels, the axes along the respective longitudinal directions can be aligned.

Alternatively, the first slit portion is provided at a position deviated from the center position in the direction orthogonal to the longitudinal axis direction of the first flange portion, and the retracted portion is inserted into the first slit portion by inserting the web of the second H steel. It is composed of a second slit portion formed in the web of the first H steel so that the second flange portion of the second H steel is inserted into the web of the first H steel.

Alternatively, the first slit portion is provided at a position deviated from the center position in the direction orthogonal to the longitudinal axis direction of the first flange portion, and the retracted portion is inserted into the first slit portion with the web of the second H steel. It is composed of a third slit portion formed in the second flange portion of the second H steel so that the web of the first H steel is inserted into the second flange portion of the second H steel.

With this configuration, it is not necessary to cut out a large web, and the webs can be overlapped with each other and fixed with bolts or nuts.

According to the present invention, the first H steel and the second H steel having a web provided between the first flange portion and the second flange portion provided in parallel are connected in the longitudinal axial direction. In the structure, the first slit portion formed along the axial direction from the end portion of the first flange portion of the first H steel and formed so that the web of the second H steel can be inserted from the end portion, and the first slit portion. (Ii) When the web of the H steel is inserted into the first slit portion, the retracting portion that saves the interference between the web and the second flange portion of the second H steel and the first H steel, the first slit portion, and the first slit portion Since the first H-beam and the second H-beam are provided with a fixing portion for fixing the first H-beam and the second H-beam in a state where the first flange portion and the second flange portion are overlapped by the retracting portion, one of the H-beams is provided. If the web of the other H steel is inserted into the first slit portion provided in the above, the ends of the respective H steels can be connected in an overlapping state. It is not necessary to accurately position the end faces of the beams and connect them with a connecting plate. As a result, the connecting operation can be easily performed, and the connecting plate is not required, so that the cost can be reduced.

The figure which shows H steel in one Embodiment of this invention The figure which shows the state which connected the H steel in FIG. The figure which shows the H steel in the 2nd Embodiment The figure which shows the state which connected the H steel in FIG. Cross-sectional view taken along the line AA in FIG. The figure which shows the end part of H steel in 3rd Embodiment FIG. 5 is a diagram showing a state in which H steels are connected in FIG. BB sectional view in FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

The connecting structure 1 of H steels in this embodiment is applied to a structure for preventing landslides on a slope as an example, and a plurality of H steels are connected in the axial direction along the longitudinal direction. Is used. Specifically, as shown in FIGS. 1 and 2, when connecting the first H steel 2 and the second H steel 3, the length is long from the end of the first flange portion 21 of the first H steel 2. When the first slit portion 24, which is formed along the axis in the direction and allows the web 33 of the second H steel 3 to be inserted, and the web 33 of the second H steel 3 are inserted into the first slit portion 24. The second flange portion 32 of the second H steel 3 and the retracting portion 4 for avoiding interference with the web 23 of the first H steel 2 are provided. Then, the web 33 of the second H steel 3 is inserted into the first slit portion 24, and the second flange portion 32 of the second H steel 3 interferes with the web 23 of the first H steel 2 by the retracting portion 4. By retracting the steel, the first flange portion 21 and the second flange portion 22 in the vicinity of the respective ends are overlapped and connected to each other, and can be fixed by using the fixing portions 5 such as the bolt 51 and the nut 52. It is a thing. Hereinafter, the present embodiment will be described in detail with reference to the drawings.

<First Embodiment>

First, as shown in FIG. 1, the H steel has flat plate-shaped first flange portions 21, 31 and second flange portions 22, 32 provided parallel to each other, and the first flange portions 21, 31 and the first flange portions 21, 31 and the second flange portions 22 and 32 thereof. It is configured to include webs 23, 33 connecting the central portions between the two flange portions 22, 32. Of such H-steels, the H-steel on one side will be referred to as the first H-steel 2, and the H-steel on the other side will be referred to as the second H-steel 3.

At the end of the first flange portion 21 of the first H steel 2, a first slit portion 24 is formed along the longitudinal axis of the first H steel 2. The first slit portion 24 is formed by a welding machine or the like, and the opening width inside the first slit portion 24 is set to a width corresponding to the thickness of the web 33 of the second H steel 3. Further, the length of the first slit portion 24 in the longitudinal direction is set to a dimension that can maintain the strength of the connecting portion when the ends of the first H steel 2 and the second H steel 3 are overlapped with each other. For example, the bolt 51 is sized so that it can be attached at three or more locations along the longitudinal direction. Then, the web 33 of the second H steel 3 can be inserted into the first slit portion 24 formed in this way.

When the web 33 of the second H steel 3 is inserted into the first slit portion 24, if the web 23 of the first H steel 2 is provided up to the end in the longitudinal direction, the web 23 and the second H The web 33 of the steel 3 and the second flange portion 32 interfere with each other, and the web 33 of the second H steel 3 cannot be inserted into the first slit portion 24. Therefore, a retracting portion 4 is provided to prevent these interferences.

In the first embodiment, as shown in FIG. 1, as the retracting portion 4, the web 23 of the first H steel 2 is provided by forming a notch portion 41 that is notched from the end portion as a whole. There is. The cutout portion 41 is formed by cutting out the web 23 as a whole up to the end of the inner portion 24a of the first slit portion 24, and is formed by cutting out the web 23 by a welding machine or the like.

Further, holes 50 for inserting bolts 51, which are fixing portions 5, are formed in the first flange portions 21, 31 and the second flange portions 22, 32 of the first H steel 2 and the second H steel 3. Has been done. The hole portion 50 is provided at a position where the positions of the hole portions 50 coincide with each other when the second H steel 3 is inserted into the first slit portion 24 and brought into contact with the inner portion 24a. As a result, the bolt 51 is inserted and fastened with the nut 52. Here, although the fixing portion 5 is composed of the bolt 51 and the nut 52, a screw thread is formed on the inner wall surface of the hole portion 50 so that the bolt 51 is screwed to the screw thread. Alternatively, it may be fixed with a pin or the like.

A connection method in the case of connecting the first H steel 2 configured in this way to the second H steel 3 will be described with reference to FIG. 2 and the like.

First, when connecting the first H steel 2 to the second H steel 3, the end portion of the first H steel 2 is brought closer to the end portion of the second H steel 3, and the first slit portion 24 of the first H steel 2 is formed. It is inserted into the web 33 of the second H steel 3. At this time, since the notch 41 notched from the web 23 is provided in the vicinity of the end portion in the longitudinal direction of the first H steel 2, the web 33 and the second flange portion 32 of the second H steel 3 are second. The first H-steel 2 can be inserted in the axial direction without interfering with the web 23 of the first-beam steel 2. By inserting the web 33 of the second H steel 3 into the first slit portion 24 in this way, the second flange portion 22 of the first H steel 2 is placed on the outside of the second flange portion 32 of the second H steel 3. The first H steel 2 and the second H steel 3 can be temporarily fixed in the positioned state. Then, with the first flange portions 21 and 31 and the second flange portions 22 and 32 in close contact with each other, the bolt 51 is inserted into the hole portion 50 and fastened with the nut 52.

In this way, it is not necessary to attach the connecting plate and fasten it with bolts after accurately positioning the end faces of each H-steel as in the conventional case, so it is only necessary to insert the web 33 into the first slit portion 24. The first H steel 2 and the second H steel 3 can be connected to each other.

<Second embodiment>

Next, the second embodiment will be described with reference to FIGS. 3 to 5.

In the first embodiment described above, the web 23 of the first H steel 2 is cut out from the end portion as a whole to form the notch portion 41. However, in this embodiment, FIGS. 3 and 5 show. As shown, the web 23 of the first H steel 2 is formed with a second slit portion 42 into which the second flange portion 32 of the second H steel 3 is inserted. The second embodiment will be described in detail below. It should be noted that those having the same reference numerals as those of the first embodiment will not be described as having the same configuration.

First, as in the first embodiment, the end of the first flange portion 21 of the first H steel 2 in this embodiment has a first slit along the longitudinal axis of the first H steel 2. The portion 24 is formed. In the second embodiment, the first slit portion 24 is formed at a position shifted from the center of the first flange portion 21 in the lateral direction by the thickness width of the web 33 of the second H steel 3. ..

Next, the retracting portion 4 in this embodiment is a boundary portion between the web 23 of the first H steel 2 and the second flange portion 22, and is a second portion along the same longitudinal direction as the first slit portion 24. It is configured by providing a slit portion 42 (see FIG. 5). The second slit portion 42 is configured so that the second flange portion 32 of the second H steel 3 can be inserted, and is formed to have the same length dimension as the first slit portion 24.

Further, bolts 51 (omitted in FIG. 3 and the like), which are fixing portions 5, are inserted into the first flange portions 21, 31 and the second flange portions 22, 32 of the first H steel 2 and the second H steel 3. A hole 50 for the purpose is formed. The hole portion 50 is provided at a position where the hole portions 50 coincide with each other when the first slit portion 24 and the second slit portion 42 are inserted into the second H steel 3 and brought into contact with the back. ..

Next, a connection method in the case of connecting the first H steel 2 thus configured to the second H steel 3 will be described with reference to FIG. 4 and the like.

First, when connecting the first H steel 2 to the second H steel 3, the end portion of the first H steel 2 is brought closer to the end portion of the second H steel 3 and is connected to the first slit portion 24 of the first H steel 2. The web 33 of the second H steel 3 is inserted. When the web 33 of the second H steel 3 is inserted into the first slit portion 24, the first slit portion 24 is provided at a position offset from the center in the lateral direction by the thickness of the web 33 of the second H steel 3. Therefore, the web 23 of the first H steel 2 and the web 33 of the second H steel 3 do not interfere with each other. However, in this way, the end portion of the web 23 of the first H steel 2 in the longitudinal direction and the second flange portion 32 of the second H steel 3 interfere with each other.

On the other hand, in the present embodiment, the second flange portion 32 of the second H steel 3 can be inserted into the boundary portion of the web 23 of the first H steel 2 with the second flange portion 22. Since the two slit portions 42 are provided, the second flange portion 32 portion of the second H steel 3 can be inserted into the second slit portion 42, and the first H steel 2 can be inserted without interfering with each other. It becomes possible to insert it into the second H steel 3.

Then, with the ends of the first H steel 2 and the second H steel 3 overlapping in this way, bolts and nuts (not shown) are attached to and fixed to the respective hole portions 50.

In the second embodiment, the webs 23 and 33 can also be overlapped with each other. Therefore, even if the webs 23 and 33 are provided with holes (not shown) and fixed with bolts or nuts. Good.

As described above, even in the second embodiment, it is not necessary to accurately position the end face of the H steel and fix it with the connecting plate as in the conventional case, so that the web 33 is inserted into the first slit portion 24 and the web 33 is inserted into the first slit portion 24. The first H steel 2 and the second H steel 3 can be connected only by inserting the second flange portion 32 into the two slit portion 42. Further, in the second embodiment, since the webs 23 and 33 can be overlapped with each other, they can be fixed to the webs 23 and 33 by using bolts 51 and nuts 52.

<Third embodiment>

Next, the third embodiment will be described with reference to FIGS. 6 to 8.

In the second embodiment, the first H steel 2 is provided with two slit portions, a first slit portion 24 and a second slit portion 42, but in the third embodiment, the first H is provided. The first slit portion 24 is provided in the steel 2, and the third slit portion 43 is provided on the second H steel 3 side. Hereinafter, the third embodiment will be described in detail, but those having the same reference numerals as those of the third embodiment will be omitted from the description as they have the same configuration.

Similar to the second embodiment, the first slit portion 24 in this embodiment is positioned so as to be offset from the center of the first flange portion 21 in the lateral direction by the thickness and width of the web 33 of the second H steel 3. It is provided in.

On the other hand, in this embodiment, the retracting portion 4 is provided on the second flange portion 32 side of the second H steel 3 (see FIGS. 6 and 8).

Specifically, when the retracting portion 4 is configured, the second flange portion 32 of the second H steel 3 is provided with a third slit portion 43 so that the web 23 of the first H steel 2 can be inserted. ing. The third slit portion 43 is provided at a position deviated from the center of the second flange portion 32 of the second H steel 3 in the lateral direction by the thickness width of the web 23, whereby the webs 23, respectively. The web 23 of the first H steel 2 can be inserted from the end of the third slit portion 43 without interfering with the 33.

A method of connecting the first H steel 2 and the second H steel 3 configured in this way will be described with reference to FIG. 7 and the like.

First, when connecting the first H steel 2 to the second H steel 3, the end portion of the first H steel 2 is brought closer to the end portion of the second H steel 3, and the first slit portion 24 of the first H steel 2 is formed. It is inserted into the web 33 of the second H steel 3. At this time, when the web 33 of the second H steel 3 was inserted into the first slit portion 24 of the first H steel 2, the first slit portion 24 slipped by the thickness width of the web 23 along the lateral direction. Since it is provided at the position, the web 23 of the first H steel 2 and the web 33 of the second H steel 3 do not interfere with each other, and the web 33 of the second H steel 3 is inserted into the first slit portion 24. Will be able to. However, the web 23 of the first H steel 2 and the second flange portion 32 of the second H steel 3 interfere with each other.

On the other hand, in the third embodiment, the second flange portion 32 of the second H steel 3 is provided with the third slit portion 43 into which the web 23 of the first H steel 2 is inserted. , The first H steel 2 can be inserted into the second H steel 3 without interfering with the web 33 of the first H steel 2 and the second flange portion 32 of the second H steel 3.

Then, in a state where the ends of the first H steel 2 and the second H steel 3 are overlapped in this way, bolts 51 and nuts 52 (not shown) are attached to and fixed to the respective hole portions 50. At this time as well, since the web 23 also overlaps, a hole (not shown) may be provided in the web 23 and fixed with bolts or nuts.

As described above, also in the third embodiment, since it is not necessary to accurately position the end faces of the respective H steels and fasten them with bolts as in the conventional case, the web 33 is inserted into the first slit portion 24 and the web 33 is inserted. The first H steel 2 and the second H steel 3 can be connected only by inserting the web 23 into the third slit portion 43. Further, in the third embodiment, since the respective webs 23 can be overlapped with each other, they can be fixed by using bolts 51, nuts 52, etc. (not shown).

The present invention is not limited to the above embodiment, and can be implemented in various embodiments.

For example, in the above embodiment, the case where the first slit portion 24, the second slit portion 42, and the third slit portion 43 are provided only on the first H steel 2 or the second H steel 3 side has been described. A shallow slit portion may be formed in the steel so as to mesh with each other so as to be inserted into each slit portion.

In addition, although the case of connecting each long H-steel has been described, when connecting the beam to the column, it is also applied to the case of connecting the beam of H-steel to the H-shaped connecting portion provided on the side surface of the column. Can be done.

1 ... H-steel connection structure 2 ... 1st H-steel 21 ... 1st flange 22 ... 2nd flange 23 ... Web 24 ... 1st slit 3 ... Second H-steel 31 ... First flange portion 32 ... Second flange portion 33 ... Web 4 ... Retracting portion 41 ... Notch portion 42 ... Second slit portion 43 ... Three slits 5 ... Fixed part 50 ... Holes 51 ... Bolts 52 ... Nuts

Claims (4)

In a connecting structure of H-steel in which a web is provided between a first flange portion and a second flange portion provided in parallel to connect the first H-steel and the second H-steel in the axial direction in the longitudinal direction.
A first slit portion formed along the axial direction from the end portion of the first flange portion of the first H steel and formed so that the web of the second H steel can be inserted from the end portion.
When the web of the second H steel is inserted into the first slit portion, a retracting portion that saves interference between the web and the second flange portion of the second H steel and the first H steel, and a retracting portion.
A fixing portion for fixing the first H steel and the second H steel in a state where the first flange portion and the second flange portion overlap each other by the first slit portion and the retracting portion.
An H-steel connection structure characterized by being equipped with. The first slit portion is formed at a central position in a direction orthogonal to the axial direction of the first flange portion.
The H-steel according to claim 1, wherein the retracted portion is composed of a notch formed by cutting a web of the first H-steel from an end portion by a length corresponding to the first slit portion. Connected structure. The first slit portion is formed at a position deviated from the center position in the direction orthogonal to the axial direction of the first flange portion.
When the retracting portion inserts the web of the second H steel into the first slit portion, the first H so as to insert the second flange portion of the second H steel into the web of the first H steel. The H-steel connecting structure according to claim 1, which is composed of a second slit portion formed in a steel web. The first slit portion is formed at a position deviated from the center position in the direction orthogonal to the axial direction of the first flange portion.
When the retracting portion inserts the web of the second H steel into the first slit portion, the second H so as to insert the web of the first H steel into the second flange portion of the second H steel. The H-steel connecting structure according to claim 1, which is composed of a third slit portion formed in a second flange portion of steel.

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