JP6866973B2 - Opening prevention metal fittings - Google Patents

Description

The present invention relates to an abdominal opening prevention metal fitting provided on the surface of a wall body, and more particularly to an abdominal opening prevention metal fitting made by combining channel steels up and down.

Conventionally, when constructing temporary deadlines, revetments, etc., a tie rod is hung between the upper part of the steel sheet pile placed on the ground and the upper part of the pile, and the earth pressure acting on the steel sheet pile from the soil thrown into the tie rod side. The force caused by the above is supported by the revetment pile via the tie rod.

In this configuration, the surface of the steel sheet pile is provided with an abdomen extending in a substantially horizontal direction so that no local force is applied to each steel sheet pile. The mounting structure of the steel sheet pile and the tie rod is disclosed in, for example, FIG. 6 of Patent Document 1 (Japanese Patent Laid-Open No. 2008-223390) and FIG. 2 of Patent Document 2 (Utility Model Registration No. 3157301). ing.

1 and 2 are views showing a mounting structure of a conventional steel sheet pile and a tie rod, FIG. 1 is a plan view, and FIG. 2 is a side view.

As shown in FIGS. 1 and 2, a raised portion formed of two channel steels 102 and 102 is installed on the surface (outer surface) of the web 100a of the wall body 101 formed of a plurality of steel sheet piles 100. Has been done. In the abdominal raising, the flanges of both channel steels 102 and 102 are screwed onto the surface of the web 100a of the steel sheet pile 100 with a fixing screw 103 while the outer surfaces of the webs of the two channel steels 102 and 102 face each other. Has been done.

At the attachment position of the tie rod 104 of the steel sheet pile 100, one through hole 100b is provided at a position corresponding to the gap 102a of the two channel steels 102 and 102 that are raised. Further, the fixing plate 105 is arranged on the outer surface of the flanges of the two channel steels 102 and 102 that are raised. The fixing plate 104 is provided with one through hole 105a at a position corresponding to the gap between the two channel steels 102 and 102 for raising the belly, and is screwed to the raising of the belly with a screw 106. One end of the tie rod 104 sequentially inserts the through hole 100b of the steel sheet pile 100, the gap 102a of the two channel steels 102 and 102, and the through hole 105a of the fixing plate 105, and is outside the channel steels 102 and 102. It protrudes into. The nut 106 is screwed to the end 104a of the tie rod 104 that penetrates the fixing plate 105 and projects toward the outer surface of the steel sheet pile 100.

Since the tensile stress of the tie rod 104 is applied to the uplifting of such a configuration, the stress is applied in the direction in which the channel steels 102 and 102 constituting the uplifting are opened in the vertical direction, and the fixing plate 105 is moved up and down. It has a role of connecting channel steels 102 and 102 and preventing their opening.

Further, the connecting strength of the pair of upper and lower channel steels is often insufficient only with the fixing plate 105 that fixes the tie rod 104 on the abdomen. Therefore, as shown in FIG. 1, a reinforcing plate 107 for reinforcing the fixing plate 105 is usually provided on the abdomen to reinforce the prevention of opening of the channel steel.

Japanese Unexamined Patent Publication No. 2008-223390 Utility Model Registration No. 3157301

However, as shown in FIGS. 1 and 2, since the fixing plate 105 and the reinforcing plate 107 are fixed to the channel steels 102 and 102 by screwing or welding, there is a problem that the assembling work of raising the abdomen is complicated. was there. In addition, there is a problem that the work is complicated even when the work is removed after the construction is completed.

Therefore, the technical problem to be solved by the present invention is to provide an abdominal opening prevention metal fitting that can be easily attached and detached, which is used for abdominal raising composed of a combination of channel steels. Is.

The present invention provides an abdominal opening prevention metal fitting having the following configuration in order to solve the above technical problems.

According to the first aspect of the present invention, it is an opening prevention metal fitting that is configured by combining a pair of channel steel webs facing each other at a predetermined interval and is fixed to an abdomen attached to the surface of a wall body. hand,
A plate-shaped main body that is approximately equal to the height direction of the abdomen,
A hook-shaped portion provided at the upper and lower ends of the plate-shaped main body and capable of being locked to the flange tips of the pair of channel steels, respectively.
An opening prevention metal fitting provided in the middle portion of the plate-shaped main body portion with a proximal end support portion that is projected on the channel steel side and can come into contact with the web proximal end of the pair of channel steels. I will provide a.

According to the second aspect of the present invention, the base end support portion is configured as a folding piece defined by a cutout groove provided in the plate-shaped main body portion. Provide prevention fittings.

According to the third aspect of the present invention, the base end support portion is provided at a position separated from the hook portion of the plate-shaped main body portion by a distance corresponding to the flange height of the channel steel. Provided is the opening prevention metal fitting of the first or second aspect.

According to the fourth aspect of the present invention, the plate-shaped main body portion is configured by connecting a pair of upper and lower combination plates having the hook-shaped portion at one end.
The pair of upper and lower combination plates have a connecting groove whose other end side is curved toward the channel steel side to form the base end support portion and which extends laterally on the side side near the curved portion, and meshes the connecting grooves with each other. Provided is the opening prevention metal fitting of the first aspect, which is configured to be connectable by the above.

According to the fifth aspect of the present invention, the opening prevention metal fitting of the first aspect is provided, wherein the base end support portion is detachably configured on the surface of the plate-shaped main body portion. In the above configuration, it is preferable that the base end support portion is formed of a male screw and is screwed into a screw hole for attaching the base end support portion provided in the plate-shaped main body portion.

According to the present invention, the hook-shaped portion of the plate-shaped main body and the base end support portion are engaged with each other to open the raised flange formed by combining the webs of channel steels so as to face each other. The prevention metal fittings can be easily attached and detached in a state where the upper and lower channel steels are connected along the raised flange.

It is a top sectional view which shows the fixed structure of the conventional tie rod and a steel sheet pile. FIG. 5 is a side sectional view showing a fixed structure of the tie rod and the steel sheet pile of FIG. It is a side sectional view which shows the attachment structure of the abdominal opening prevention metal fitting which concerns on 1st Embodiment of this invention. It is a perspective view which shows the appearance structure of the opening prevention metal fitting of the abdomen of FIG. It is sectional drawing in the VV line of FIG. It is a process drawing which shows the work of assembling the opening prevention metal fitting of the abdomen of FIG. 3 to the abdomen. It is a side sectional view which shows the attachment structure of the abdominal opening prevention metal fitting which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the appearance structure of the opening prevention metal fitting of the abdomen of FIG. It is a side sectional view which shows the attachment structure of the abdominal opening prevention metal fitting which concerns on 3rd Embodiment of this invention. It is a perspective view which shows the appearance structure of the opening prevention metal fitting of the abdomen of FIG. It is a side sectional view which shows the attachment structure of the abdominal opening prevention metal fitting which concerns on 4th Embodiment of this invention. It is a perspective view which shows the appearance structure of the opening prevention metal fitting of the abdomen of FIG. It is an exploded perspective view of the opening prevention metal fitting of the abdomen of FIG. It is a process drawing which shows the work of assembling the opening prevention metal fitting of the abdomen of FIG. 11 to the abdomen.

Hereinafter, the opening prevention metal fittings according to each embodiment of the present invention will be described with reference to the drawings.

(First Embodiment)

FIG. 3 is a side sectional view showing a mounting structure of an abdominal opening prevention metal fitting according to a first embodiment of the present invention. FIG. 4 is a perspective view showing an external configuration of an abdominal opening prevention metal fitting according to a first embodiment of the present invention.

As shown in FIG. 3, the opening prevention metal fitting 1 according to the present embodiment is configured by combining the webs 102b of a pair of channel steels 102 and 102 with each other facing each other at a predetermined interval 102a, and is configured on the surface of the wall body 101. It is used by fixing it to the abdominal raising 90 attached to.

The abdomen 90 is attached to the surface of the wall body 101 formed of the plurality of steel sheet piles 100, and the flanges 102c of both channel steels 102 and 102 are fixed to the surface of the web 100a of the steel sheet pile 100. Is screwed in.

The opening prevention metal fitting 1 has a plate-shaped main body portion 10 made of metal and arranged along the flange 102c of the channel steels 102 and 102 of the raised 90. The plate-shaped main body portion 10 is a metal plate having a predetermined thickness having a strength sufficient to support the stress applied to the channel steels 102 and 102, and the upper and lower ends are bent toward the back surface side to form the hook-shaped portion 11. ..

A flange insertion space 14 is formed between the hook-shaped portion 11 and the plate-shaped main body portion 10, and the flange 102c of the channel steel 102 is inserted into the space as described later, whereby the hook-shaped portion 11 is formed. Engage with channel steel 102.

Further, a U-shaped cut groove 12 is provided in the intermediate portion of the plate-shaped main body portion 10, and the base end support portion 13 is defined by the cut groove 12. As shown in FIG. 4, one end of the base end support portion 13 is connected to the plate-shaped main body portion 10, and the base end support portion 13 can be bent from the portion.

The dimension H between the hook-shaped portions 11 and 11 provided at the upper and lower ends of the plate-shaped main body portion 10 is configured to be substantially equal to the height dimension of the raised portion 90, and the flange insertion space 14 and the base end support portion 13 are formed. The distance A between the ends of the channel steel 102 is substantially equal to the height dimension of the flange 102c of the channel steel 102.

The opening prevention metal fitting 1 is provided along the surface of the flange 102c of the channel steels 102 and 102 constituting the raised portion 90, and is engaged with the surface of the raised portion 90 by inserting the flange 102c into the flange insertion space 14. It will be stopped.

Further, as shown in FIG. 3, the base end support portion 13 is defined by a U-shaped cut groove 12, and can be bent along one side. The base end support portion 13 may be bent, for example, with a hammer or the like.

As shown in FIG. 5, the base end support portion 13 projects toward the back surface side of the plate-shaped main body portion 10 by being bent, and the upper and lower ends thereof approach the base end side of the web 102b of the channel steel 102. It can come into contact with the web base end of channel steel.

The work of attaching the opening prevention metal fitting according to the present embodiment to the abdomen 90 is performed by the procedure shown in FIG. First, as shown in FIG. 6A, the flange tip of the channel steel 102 is inserted into one flange insertion space 14 of the opening prevention metal fitting 1, and the flange tip is moved to the tip side of the flange insertion space 14 as shown by an arrow 91. In FIG. 6, the lower channel steel 102 is assembled first, but the order is not limited to this.

Next, as shown in FIG. 6B, the flange tip of the channel steel 102 is similarly inserted into the flange insertion space 14 of the other channel steel 102, and the other channel steel 102 is moved to the tip side of the flange insertion space 14 as shown by an arrow 92. Let me.

Finally, by pushing the base end support portion 13 toward the channel steel 102 side, the opening prevention metal fitting 1 is attached to the raised portion 90.

(Second Embodiment)

FIG. 7 is a side sectional view showing a mounting structure of an abdominal opening prevention metal fitting according to a second embodiment of the present invention. FIG. 8 is a perspective view showing an external configuration of the abdominal opening prevention metal fitting of the present embodiment.

The opening prevention metal fitting 2 has a plate-shaped main body portion 20 which is made of metal and is arranged along the flange 102c of the channel steels 102 and 102 of the raised 90. The plate-shaped main body portion 20 is a metal plate having a predetermined thickness, and the upper and lower ends are bent toward the back surface side to form the hook-shaped portion 21.

A flange insertion space 24 is formed between the hook-shaped portion 21 and the plate-shaped main body portion 20, and the flange 102c of the channel steel 102 is inserted into the space as described later to form the hook-shaped portion 21. Engage with channel steel 102.

Further, a through hole 25 for inserting the tie rod 104 is provided in the intermediate portion of the plate-shaped main body portion 20, and the opening prevention metal fitting 2 and the tie rod 104 are fixed by screwing the nut 106 into the tie rod 104.

U-shaped cutting grooves 22 are provided at two locations on the side vertical positions of the through holes, and the base end support portion 23 is defined by the cutting grooves 22. As shown in FIG. 8, one end of the base end support portion 23 is connected to the plate-shaped main body portion 20, and the base end support portion 23 can be bent from the portion.

As shown in FIG. 8, in the present embodiment, the base end support portion 23 is provided at one position each at the top and bottom, but in order to ensure the horizontal symmetry of the plate-shaped main body portion, the top, bottom, left, and right are provided. It may be provided in.

The dimension H between the flange-shaped portions 21 and 21 provided at the upper and lower ends of the plate-shaped main body portion 20 is configured to be substantially equal to the height dimension of the raised portion 90, and the flange insertion space 24 and the proximal side base. The distance A between the ends of the end support portion 23 is configured to be substantially equal to the height dimension of the flange 102c of the channel steel 102.

The opening prevention metal fitting 2 is provided along the surface of the flange 102c of the channel steels 102 and 102 constituting the raised portion 90, and is engaged with the surface of the raised portion 90 by inserting the flange 102c into the flange insertion space 24. It will be stopped.

Further, as shown in FIG. 8, the base end support portion 23 is defined by a U-shaped cutting groove 22, and can be bent along one side. The base end support portion 23 may be bent, for example, with a hammer or the like.

The opening prevention metal fitting 2 according to the present embodiment is attached to the abdomen 90 in the same manner as the opening prevention metal fitting 1 according to the first embodiment. In the opening prevention metal fitting 2 according to the present embodiment, since the base end support portions 23 that come into contact with the channel steel 102 are provided for each of the upper and lower channel steel 102, the base end support portion 23 can be bent as appropriate. It should be done at the timing of.

Further, the opening prevention metal fitting 1 is provided with a through hole 25 for fixing to the tie rod 104, and the tie rod 104 and the opening prevention metal fitting 2 can be fixed by using the through hole 25.

(Third Embodiment)
FIG. 9 is a side sectional view showing a mounting structure of an abdominal opening prevention metal fitting according to a third embodiment of the present invention. FIG. 10 is a perspective view showing an external configuration of the abdominal opening prevention metal fitting of the present embodiment.

The opening prevention metal fitting 3 has a plate-shaped main body portion 20 which is made of metal and is arranged along the flange 102c of the channel steels 102 and 102 of the raised 90. The plate-shaped main body portion 20 is a metal plate having a predetermined thickness, and the upper and lower ends are bent toward the back surface side to form the hook-shaped portion 21.

A flange insertion space 34 is formed between the hook-shaped portion 31 and the plate-shaped main body portion 30, and the flange 102c of the channel steel 102 is inserted into the space as described later to form the hook-shaped portion 31. Engage with channel steel 102.

Further, a plurality of screw holes 35 are provided at different height positions in the intermediate portion of the plate-shaped main body portion 30. The screw hole 35 is a through hole for attaching the base end support member 33, and has a peripheral surface that is threaded. By screwing the base end support member 33 made of male screws into the screw holes 35 from the outside, the screw leg portion of the base end support member 33 protrudes toward the back surface side of the plate-shaped main body portion 30. Be placed. The screw hole 35 for attaching the base end support member 33 may be appropriately selected according to the height dimension of the flange 102c of the channel steel 102.

The dimension H between the hook-shaped portions 21 and 21 provided at the upper and lower ends of the plate-shaped main body portion 20 is configured to be substantially equal to the height dimension of the raised abdomen 90.

The opening prevention metal fitting 3 is provided along the surface of the flange 102c of the channel steels 102 and 102 constituting the raised portion 90, and is engaged with the surface of the raised portion 90 by inserting the flange 102c into the flange insertion space 34. It will be stopped.

The opening prevention metal fitting 3 according to the present embodiment is attached to the abdomen 90 in the same manner as the opening prevention metal fitting 1 according to the first embodiment. In the opening prevention metal fitting 3 according to the present embodiment, the base end support member 33 in contact with the channel steel 102 can select an arbitrary height position for each of the upper and lower channel steels 102, and grooves of various sizes can be selected. It can correspond to the structural steel 102.

(Fourth Embodiment)
FIG. 11 is a side sectional view showing a mounting structure of an abdominal opening prevention metal fitting according to a fourth embodiment of the present invention. FIG. 12 is a perspective view showing an external configuration of the abdominal opening prevention metal fitting of the present embodiment.

The opening prevention metal fitting 4 is formed by combining two metal plates 41 and 42 arranged in the vertical direction to form a plate-shaped main body portion 40. The plate-shaped main body 40 is arranged along the flange 102c of the channel steels 102 and 102 of the raised 90. The metal plates 41 and 42 are metal plates having a predetermined thickness, one end side of which is bent toward the back surface side to form a hook-shaped portion 43, and the other end side of which is curved toward the back surface side to form a base end support portion 44. ..

A flange insertion space 48 is formed between the hook-shaped portion 43 and the metal plates 41 and 42, and the flange 102c of the channel steel 102 is inserted into the space as described later to form the hook-shaped portion 43. Engage with channel steel 102.

The base end support portion 44 is provided so as to be curved toward the back surface side as described above, so that the base end support portion 44 comes into contact with the web base end of the other channel steel 102 facing the channel steel 102 with which the hook-shaped portion 43 engages. ing. That is, as shown in FIG. 12, the distance A between the hook-shaped portion 43 of one metal plate 42 and the end portion of the base end support portion 44 of the other metal plate 41 is the flange 102c of the channel steel 102. It is configured to be approximately equal to the height dimension.

Further, as shown in FIG. 12, the dimension H between the hook-shaped portions 43 and 43 when the two metal plates 41 and 42 are combined is configured to be substantially equal to the height dimension of the raised portion 90.

As shown in FIG. 13, the metal plates 41 and 42 are provided with curved portions 46 for bending the proximal end support portion 44 toward the back surface side, and the side surfaces facing each other at positions where the curved portions 46 intersect. A connecting groove 47 is provided which opens in the sill and extends in a substantially horizontal direction.

The connecting grooves 47 provided in the metal plates 41 and 42 are configured to mesh with each other, and the two metal plates are formed by inserting the curved portions 46 into the openings of the connecting grooves 47. 41 and 42 can be connected.

The work of attaching the opening prevention metal fitting according to the present embodiment to the abdomen 90 is performed by the procedure shown in FIG. First, as shown in FIG. 14A, the flange tips of the channel steel 102 are inserted into the flange insertion spaces 48 of the metal plates 41 and 42 on both the upper and lower sides of the opening prevention metal fitting 4, and the metal plates 41 and 72 are attached to the channel steel 102. .. At this time, the base end support portions 44 of the metal plates 41 and 42 are arranged so as to abut the web base end portions of the other channel steel 102. At this time, the connecting grooves 47 of the metal plates 41 and 42 are at substantially the same height.

In this state, as shown by the arrow 94, the metal plates 41 and 42 are moved along the channel steel 102 so as to be close to each other. As a result, as shown in FIG. 14B, the connecting grooves 47 mesh with each other.

When the metal plates 41 and 42 are moved to the back of the connecting groove 47, both metal plates 41 and 42 are connected. At this time, since the base end supporting portions of the metal plates 41 and 42 attached to the channel steel 102 abut the web base end portion of the other channel steel 102, the flange portion 102c of the channel steel 102 is firmly supported. be able to.

As described above, the raised flanges 102c formed by combining the webs 102b of the channel steel 102 so as to face each other are supported by the hook-shaped portions 11, 21, 31, 43 of the plate-shaped main body and the base end. By engaging the portions 13, 23, 33, and 44, the opening prevention metal fitting can be easily attached and detached in a state where the upper and lower channel steels are connected along the raised flange.

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

For example, in any of the embodiments, the hook-shaped portion is provided integrally with the plate-shaped main body portion, but the plate-shaped main body portion and the hook-shaped portion may be detachably configured. That is, by separately forming a hook-shaped member that engages with the flange and a member having a base end support portion and assembling both at the time of joining, the flange tip of the channel steel and the web base end are supported. , It suffices if it is configured so that it can be attached to the abdomen.

Further, the size and the number of hook-shaped portions are not particularly limited, and the configuration is not limited as long as it is provided at the upper end of the plate-shaped main body portion and can be engaged with the flange.

1,2,3,4 Opening prevention metal fittings 10, 20, 30, 40 Plate-shaped main body 11, 21, 31, 43 Flange-shaped parts 12, 22 Cutting grooves 13, 23, 44 Base end support parts 14, 24, 34 , 48 Flange insertion space 25 Through hole 34 Base end support member 35 Screw hole 41, 42 Metal plate 46 Curved part 47 Connecting groove 90 Raised 102 Groove type steel 102b Web 102c Flange

Claims (6)

It is an opening prevention metal fitting that is configured by combining a pair of channel steel webs facing each other at a predetermined interval and is fixed to an abdomen attached to the surface of a wall body.
A plate-shaped main body that is approximately equal to the height direction of the abdomen,
A hook-shaped portion provided at the upper and lower ends of the plate-shaped main body and capable of being locked to the flange tips of the pair of channel steels, respectively.
An opening prevention metal fitting provided in the middle portion of the plate-shaped main body portion with a proximal end support portion that is projected on the channel steel side and can come into contact with the web proximal end of the pair of channel steels. .. The opening prevention metal fitting according to claim 1, wherein the base end support portion is configured as a folding piece defined by a cutout groove provided in the plate-shaped main body portion. The first or second aspect of the present invention, wherein the base end support portion is provided at a position separated from the hook portion of the plate-shaped main body portion by a distance corresponding to the flange height of the channel steel. Opening prevention metal fittings. The plate-shaped main body portion is configured by connecting a pair of upper and lower combination plates having the hook-shaped portion at one end.
The pair of upper and lower combination plates have a connecting groove whose other end side is curved toward the channel steel side to form the base end support portion and which extends laterally on the side side near the curved portion, and meshes the connecting grooves with each other. The opening prevention metal fitting according to claim 1, wherein the metal fitting is configured so as to be connectable by the above. The opening prevention metal fitting according to claim 1, wherein the base end support portion is detachably configured on the surface of the plate-shaped main body portion. The opening prevention metal fitting according to claim 5, wherein the base end support portion is composed of a male screw and is screwed into a screw hole for attaching the base end support portion provided in the plate-shaped main body portion.

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