JP2019131957A - Coating material fixing metal, coating material fixing structure, and coating material fixing method - Google Patents

Abstract

To provide a coating material fixing metal capable of easily and surely fixing a molded coating material to be coated to a form steel without the need for specialized technology and special tools, and a fixing structure of the coating material using the coating material fixing metal, and a method for fixing the coating material.SOLUTION: A coating material fixing metal 1 is a fixing metal for fixing a molded covering material 3 to cover a shape steel 2 to the long shape steel 2 formed with a through hole 2a penetrating in the thickness direction. The coating material fixing metal comprises a first fixing metal comprising a first clip part 41 for fitting a first groove 40 formed by bending a flat plate into a substantially U-shape in a side view into a form steel 2 from a through hole 2a and a first projecting piece 42 projecting in a direction opposite to the first groove 40 from at least one or more first side plates 41a forming a side surface of the first groove 40.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a covering material fixing bracket for fixing a formed covering material covering the periphery of a shape steel to a long shape steel.

  Conventionally, as a method of fixing a fireproof coating material to a long shape steel such as a steel column, a method of spraying a powdery fireproof coating material containing a cement component as a hardener onto the shape steel, or felt There is a known method of fixing a refractory fire-resistant coating material to a shape steel with a dedicated welding pin. However, since these methods require specialized techniques and special tools, only limited installers can perform them. Therefore, a construction method has been proposed in which a metal fitting bent in a substantially C shape in a side view is externally fitted to a fireproof coating material disposed around the shape steel, and the fireproof coating material is sandwiched between the metal fittings. (Patent Document 1, Patent Document 2, Patent Document 3)

JP 2017-31728 JP2013-256844 JP 2001-182184 A

  However, since these metal fittings are only sandwiched from the outside to the fireproof coating material, it is impossible to completely prevent the fireproof coating material from being displaced or dropped from the shape steel due to vibration or impact acting on the building. Moreover, if a fireproof adhesive is applied between the fireproof coating material and the shape steel, the fireproof coating material can be securely locked to the shape steel, but it takes time and may lead to a decrease in workability.

  Therefore, the present invention has been made in view of the above-mentioned problems, and can easily and reliably fix a molded covering material covering a shape steel to the shape steel without requiring specialized techniques or special tools. An object of the present invention is to provide a covering material fixing bracket, a fixing structure of a covering material using the covering material fixing bracket, and a fixing method of the covering material.

  A first covering material fixing metal fitting of the present invention is a covering material fixing metal fitting for fixing a formed covering material covering a shape steel to a long shape steel having a through hole penetrating in a plate thickness direction. A first groove formed by bending the flat plate into a substantially U shape when viewed from the side, and a first clip portion that fits the shaped steel from the through hole, and at least one or more first grooves that form the side surface of the first groove. A first metal fitting having a first projecting piece projecting in a direction opposite to the first groove from the first side plate is provided.

  The second covering material fixing metal fitting of the present invention is further characterized by further comprising a second metal fitting having a substantially C shape in a side view sandwiched between the covering materials covering the periphery of the shape steel.

  According to a third covering material fixing bracket of the present invention, the second bracket includes an elongated flat plate-like first plate piece and both ends in the longitudinal direction of the first plate piece at an acute angle with respect to the first plate piece. It has a pair of bent first side pieces, and a pair of first projection pieces protruding from the pair of first side pieces toward the first side pieces facing each other and piercing the covering material. It is said.

  In the fourth covering material fixing bracket of the present invention, the first projecting piece is gradually widened from the distal end toward the proximal end side, and a stepped return piece is provided between the distal end and the proximal end. A flat plate-like portion and a slit groove extending from the distal end of the plate-like portion to the base end side, and the slit groove has a bottom portion of the plate-like portion that is more than the return piece. It is characterized by being close to the base end side.

  According to a fifth covering material fixing bracket of the present invention, a second clip portion that fits a second groove formed by bending a flat plate into a substantially U shape in a side view and the side surface of the second groove. A third metal fitting having a second protruding piece protruding in a direction opposite to the second groove from one second side plate to be formed, wherein the first metal fitting is formed from a pair of the first side plates. A pair of said 1st protrusion pieces which protrude, and said 2nd metal fittings are an acute angle with respect to the said 2nd plate piece at the end of the elongate flat plate-like 2nd plate piece and the longitudinal direction of this 2nd plate piece. A second side piece that is bent into a second side piece, a third side piece that is bent at a substantially right angle with respect to the second plate piece at the other end in the longitudinal direction of the second plate piece and shorter than the second side piece, A second protruding piece protruding from the second side piece to the third side piece side and piercing the covering material; and a third protruding piece protruding obliquely from the third side piece toward the second plate piece; It is characterized by having a.

  The fixing structure of the first covering material of the present invention includes a long shaped steel provided with a plurality of through-holes penetrating in the plate thickness direction along the longitudinal direction, and a molded covering material covering the periphery of the shaped steel And the covering material fixing metal fitting according to any one of the first to fourth aspects.

  The fixing structure of the second covering material of the present invention has a web and a pair of flanges orthogonal to the web, and a plurality of through holes penetrating in the plate thickness direction are formed in the web along the longitudinal direction of the web. It is characterized by comprising a long shaped steel, a molded covering material that covers the web and the flange, and the covering material fixing metal fitting according to the fifth aspect.

  The fixing structure of the third covering material of the present invention has a flat plate portion stuck to the surface of the shape steel, and a protruding portion that protrudes substantially perpendicularly from the flat plate portion and pierces the covering material. A reinforcing metal fitting is further provided.

  The first covering material fixing method of the present invention is a long shaped steel having a through-hole penetrating in the plate thickness direction using the covering material fixing bracket according to any one of the first to fourth aspects. A method for fixing a covering material for fixing a formed covering material for covering a shape steel, wherein the first clip portion of the first metal fitting is inserted into the shape steel from the through hole, and the periphery of the shape steel The covering material covering the cover is pierced into the first projecting piece, and the second metal fitting is sandwiched around the covering material.

  A second covering material fixing method according to the present invention includes a covering member fixing metal fitting according to the fifth aspect, and has a web and a pair of flanges orthogonal to the web, and penetrates the web in the thickness direction. A covering material fixing method for fixing a shaped covering material covering a shape steel to a long shape steel having a hole formed therein, wherein the first clip portion of the first metal fitting is removed from the through hole. The covering material that is inserted into the web and covers both sides of the web is pierced into the first projecting piece, and the second clip portion of the third metal fitting is directed in the direction opposite to the flange facing the second projecting piece. Inserted into the front end of the flange in the width direction, the covering material covering the surface of the flange opposite to the surface on which the web protrudes is pierced into the second protruding piece, and the second metal fitting is It is characterized by being sandwiched around the covering material There.

  According to the first covering material fixing metal fitting of the present invention, the first clip part formed by bending the flat plate into a substantially U shape in a side view to form the first groove, and at least one or more first parts forming the side surface of the first groove. Since the 1st metal fitting which has the 1st protrusion piece which protrudes in the direction opposite to a 1st groove | channel from 1 side plate is provided, the edge of the through-hole formed in the shape steel for the 1st clip part of the 1st metal fitting By inserting from the surface and piercing the first projecting piece into the covering material covering the periphery of the shape steel, it is possible to prevent the covering material from being displaced from the shape steel and falling.

  According to the second covering material fixing metal fitting of the present invention, the second covering material fixing metal fitting further includes the second metal fitting having a substantially C shape in a side view sandwiched by the covering material covering the periphery of the shape steel, so that the protruding piece of the first metal fitting is used as the covering material. The covering material can be fixed to the shape steel by sandwiching the second metal fitting around the covering material in the pierced state. Therefore, since the covering material is sandwiched between the second metal fitting and locked to the first metal fitting fixed to the shape steel, it is possible to reliably prevent the covering material from being displaced or dropped from the shape steel. In addition, since no special skills or special tools are required, even a construction person with little experience can easily perform the construction, and furthermore, since the covering material can be fixed to the shape steel without using an adhesive, construction work is saved. It can save and improve workability.

  According to the third covering material fixing metal fitting of the present invention, the second metal fitting includes a pair of first side pieces bent at an acute angle with respect to the first plate piece, and a first opposing each other from the pair of first side pieces. A pair of first projecting pieces projecting toward the side pieces, so that the second metal fitting is attached to the covering material so that the covering material covering the shape steel is sandwiched between the pair of first side pieces. When fitted, the pair of first side pieces firmly presses the covering material toward the shape steel side, and the first projecting piece can pierce the covering material and be engaged with the covering material. The first metal fitting and the second metal fitting By using this, the covering material can be securely fixed to the shape steel.

  According to the fourth covering material fixing metal fitting of the present invention, the first projecting piece gradually increases in width from the distal end toward the proximal end side and is provided with a stepped return piece between the distal end and the proximal end. And a slit groove extending from the front end of the plate-like part to the base end side, and the slit groove has its bottom part closer to the base end side of the plate-like part than the return piece. It is easy to stab the plate-like part which is thin at the front end side into two parts until the return piece is embedded in the covering material, and after the first protruding piece is inserted into the covering material, the return piece becomes the covering material. It is possible to prevent the covering material from coming off from the first protruding piece by being caught.

  According to the fifth covering material fixing metal fitting of the present invention, the third metal fitting protrudes from the second clip part bent in a substantially U shape in a side view and one second side plate forming the side face of the second groove. The first metal fitting has a pair of first protrusion pieces, the second metal fitting has a second side piece bent at an acute angle with respect to the second plate piece, and the second plate. A third side piece that bends substantially perpendicular to the piece and is shorter than the second side piece, a second protruding piece that projects from the second side piece to the third side piece, and a second plate from the third side piece And a third protruding piece projecting obliquely toward the piece. Accordingly, the shape steel is formed of a C-shaped steel or H-shaped steel having a through hole in the web and the front end of the flange facing the outer wall material, and the flange of the shape steel and the outer wall material are close to each other and the outer wall material and the web Even if a sufficient working space cannot be secured in between, the first clip piece of the first metal fitting is inserted into the through hole from the indoor side and the covering material covering both sides of the web is pierced into the first projecting piece, The second clip part of the three metal fittings is inserted into the front end of the flange on the outer wall material side in a state where the second projecting piece faces the opposite direction of the flange, and the surface opposite to the surface of the flange on which the web projects. A covering material for covering the outer wall material is inserted into the second protruding piece, the third side piece of the second metal fitting is inserted between the outer wall material and the flange, and the third projecting piece is locked to the flange tip portion on the outer wall material side. Coating material covering the surface opposite to the surface facing the outer wall material of the web By piercing the second projecting pieces may be fixed to ensure shaped steel the dressing.

  According to the first covering material fixing structure of the present invention, a long shaped steel provided with a through hole penetrating in the thickness direction, a shaped covering material covering the shaped steel, and the first to fourth Accordingly, the covering material can be securely fixed to the shape steel by preventing the covering material from being displaced or dropped from the shape steel. In addition, since it does not require specialized technology and special tools, even a construction person with little experience can perform the construction, and furthermore, the covering material can be fixed to the shape steel without using an adhesive. Can be improved.

  According to the second covering material fixing structure of the present invention, a long shape steel having a web and a pair of flanges orthogonal to the web, and having a through-hole penetrating in the thickness direction in the web, the web and Since the molded covering material for covering the flange and the covering material fixing metal fitting according to the fifth aspect are provided, the shape steel directs the front end of the flange to the outer wall material, and the outer wall material and the front end of the flange are close to each other. Even when there is not enough space between the outer wall material and the web to perform the work, the covering material can be securely fixed to the shape steel.

  According to the fixing structure of the third covering material of the present invention, it has a flat plate portion stuck to the surface of the shape steel, and a protruding portion that protrudes substantially perpendicularly from the flat plate portion and pierces the covering material. Since the reinforcing bracket is further provided, the flat plate portion of the reinforcing bracket can be bonded and fixed between the adjacent through holes of the shape steel, and the protruding portion can be stabbed into the covering material that is locked to the first protruding piece of the first bracket. . Therefore, when the space | interval of through-holes is large, a coating | covering material can be more firmly fixed to a shape steel by using a reinforcement metal fitting together with a coating | covering material fixing metal fitting.

  According to the first fixing method of the covering material of the present invention, the covering material can be fixed to the shape steel using the covering material fixing metal fitting according to any one of the first to fourth aspects. 1 clip part is inserted into the through hole, and the first protruding piece is inserted into the covering material covering the periphery of the shape steel, and the second metal fitting is sandwiched around the covering material. And the covering material can be securely fixed to the shape steel. In addition, since it does not require specialized technology or special tools, even a construction person with little experience can perform the construction, and furthermore, since the covering material can be fixed to the shape steel without using an adhesive, Workability can be improved.

  According to the second fixing method of the covering material of the present invention, the covering material can be fixed to the shape steel using the covering material fixing metal fitting according to the fifth aspect, so that the shape steel attaches the tip of the flange to the outer wall material. Even when there is not enough space for work between the outer wall material and the web, the covering material can be reliably fixed to the shape steel from the indoor side. In addition, since it does not require specialized technology or special tools, even a construction person with little experience can perform the construction, and furthermore, since the covering material can be fixed to the shape steel without using an adhesive, Workability can be improved.

Sectional drawing which shows the fixation structure of a 1st coating | covering material. The perspective view which shows the 1st metal fitting of a 1st coating | covering material fixing metal fitting. The top view which shows the 1st metal fitting of a 1st coating | covering material fixing metal fitting. The top view which shows another shape of the 1st metal fitting of a 1st coating | covering material fixing metal fitting. The perspective view which shows the 2nd metal fitting of a 1st coating | covering material fixing metal fitting. The side view which shows another shape of the 2nd metal fitting of a 1st coating | covering material fixing metal fitting. The perspective view which shows a mode that the 1st metal fitting of a 1st coating | covering material fixing metal fitting is installed in a shape steel. Sectional drawing which shows a mode that a coating | covering material is fixed to the shape steel in which sufficient work space is formed in the circumference | surroundings. Sectional drawing which shows a mode that the fixing structure of the 1st coating | covering material was used for various shape steel. Sectional drawing which shows the fixation structure of a 2nd coating | covering material. The perspective view which shows the 2nd metal fitting of a 2nd coating | covering material fixing metal fitting. The side view which shows another shape of the 2nd metal fitting of a 2nd coating | covering material fixing metal fitting. The perspective view which shows the 3rd metal fitting of a 2nd coating | covering material fixing metal fitting. The top view which shows the 3rd metal fitting of a 2nd coating | covering material fixing metal fitting. The perspective view which shows the coating | covering material of a 2nd coating | covering material fixing structure. Sectional drawing which shows a mode that a coating | covering material is fixed to the shape steel adjacent to an outer wall.

<First cover fixing bracket>
Hereinafter, the best embodiment of the covering material fixing bracket will be described with reference to the drawings. The covering material fixing metal fitting 1 of the present application is a metal fitting used for fixing a fireproof covering material formed on a pillar material mainly made of H-shaped steel. The covering material fixing bracket 1 can be used not only for a vertical material but also for a horizontal member as long as it is a long shape steel with a through-hole formed therein. Also, a square steel, a steel pipe, and other types of shapes can be used. Although it can be used also for steel, in the illustrated example, the case where the shape steel is a column material formed of H-section steel will be described. The covering material fixed to the shape steel by the covering material fixing metal fitting 1 is a member that can be easily pierced with a pointed metal fitting such as felt-like rock wool or glass wool, and a synthetic resin foam. It is.

  As shown in FIG. 1, the covering material fixing metal fitting 1 is a metal fitting for fixing a molded covering material 3 covering the H-section steel 2 to an H-section steel 2 composed of a web 21 and a flange 22. The first metal fitting 4 fixed to the through-hole 2a formed by penetrating the web 21 in the plate thickness direction, and the covering material 3 locked to the H-section steel 2 by the first metal fitting 4 and covering the H-section steel 2 And a second metal fitting 5 having a substantially C shape in a side view.

  As shown in FIGS. 2 and 3, the first metal fitting 4 forms a first clip portion 41 in which a flat plate is bent into a substantially U shape in a side view to form a first groove 40, and a side surface of the first groove 40. A pair of first projecting pieces 42 projecting in a direction opposite to the first groove 40 from the pair of first side plates 41a.

  The first clip portion 41 includes a flat plate-like first bottom plate 41b and a pair of first side plates 41a that are bent at substantially right angles at both ends of the first bottom plate 41b. A first groove 40 is formed between the first side plate 41a and the first side plate 41a. The first distance L1 between the pair of first side plates 41a, which is the groove width, is formed slightly narrower than the plate thickness width t1 of the web 21 of the H-section steel 2 shown in FIG. ing.

  2 and 3, the pair of first projecting pieces 42 are formed by cutting out the central portions of the pair of first side plates 41a, and gradually widen from the distal end toward the proximal end side, A plate-like plate-like portion 42a provided with a stepped return piece 42b between the base end and a slit groove 42c extending from the center tip of the plate-like portion 42a toward the base end side are formed. The bottom of the groove 42c is closer to the base end of the plate-like portion 42a than the return piece 42b. The first projecting piece 42 is not limited to the shape shown in FIG. 3 as long as the covering material 3 can be pierced, and may have another shape shown in FIG. 4 or other shapes. In FIG. 2, four first protruding pieces 42 are formed with respect to one first side plate 41 a, but the number thereof may be less than four or more than four. And the 1st protrusion piece 42 does not necessarily need to be made into a pair, and as shown in FIG.9 (b), you may make it protrude only from one 1st side plate 41a.

  As shown in FIG. 5, the second metal fitting 5 includes a pair of elongated flat plate-like first plate pieces 51 and a pair of longitudinal ends of the first plate pieces 51 bent at an acute angle with respect to the first plate pieces 51. The first side piece 52 and a first protruding piece 53 protruding from the pair of first side pieces 52 toward the first side piece 52 facing each other.

  The pair of first side pieces 52 has a second distance L2 between the edges on the first plate piece 51 side shown in FIG. 5 of the covering material 3 sandwiched by the pair of first side pieces 52 shown in FIG. Since it is formed substantially the same as the first width W1 and has an acute angle with respect to the first plate piece 51, the covering material 3 can be elastically sandwiched. Further, as shown in FIG. 5, the first projecting piece 53 is formed in a substantially triangular shape with a sharp tip, and is inserted into the covering material 3 when the second metal fitting 5 is attached to the covering material 3. Can be stopped. In addition to the shape shown in FIG. 5, the second metal fitting 5 is obtained by bending the pair of first side pieces 52 obliquely in the directions close to each other at the center portion as shown in FIG. 6A. A shape in which the covering material 3 can be firmly sandwiched, or as shown in FIG. 6B, the covering material protrudes from the central portion of one first side piece 52 toward the other first side piece 52. 3 may be formed.

<Fixing structure of first covering material>
Next, the covering fixing structure 6 using the covering fixing bracket 1 described above will be described. As shown in FIG. 1, the covering material fixing structure 6 includes a covering material fixing bracket 1, a web 21 and a flange 22, and a long H provided with a through hole 2 a that penetrates the web 21 in the plate thickness direction. A shape steel 2 and a felt-like coating material 3 that covers the periphery of the H-shaped steel 2 are provided.

  As shown in FIG. 7, the H-section steel 2 is a member extending in the vertical direction, such as a column member or a shed bundle, and the web 21 has a through hole 2 a having a size that allows the first metal fitting 4 to be inserted. Are formed at intervals along the longitudinal direction. In addition, although it is set as the H-section steel 2 in the example of illustration, as long as it has the through-hole 2a, another type of shape steel may be sufficient, and it is good not only as a vertical material but as a horizontal material like a beam material. .

  As shown in FIG. 1 and FIG. 7, the covering material 3 is a molded member that covers the H-section steel 2 along the longitudinal direction of the H-section steel 2. A surface orthogonal to one surface of the web 21 and a surface of the flange 22 opposite to the surface projecting from the web 21 are formed in a substantially plate shape that can be integrally covered up to substantially the center in the width direction. Moreover, the covering material 3 can be made into a member according to the length of the H-section steel 2 by fitting the sane 3a formed at the end, and when installed on the H-section steel 2, A cut portion 31 that can be inserted into the flange 22 is provided in the abutting portion. The material of the covering material 3 is not particularly limited as long as it is a member having heat insulation or fire resistance performance, but if the rock wool is formed into a felt shape, the first protruding piece 42 of the first metal fitting 4 and The first projecting piece 53 of the second metal fitting 5 can be pierced into the covering material 3 so that the covering material 3 can be securely fixed to the H-section steel 2, and the covering material 3 can be fixed according to the shape of the H-section steel 2. This is suitable because it can be easily cut with scissors or a cutter.

  Next, a construction method of the covering material fixing structure 6 will be described. First, as shown in FIG. 7, in order to install the first metal fitting 4 on the web 21 of the H-section steel 2, the first groove 40 of the first clip portion 41 is fitted to the web 21 from the small edge surface of the through hole 2 a. Then, the first metal fitting 4 is disposed above and below the through hole 2a, and the first protruding piece 42 is protruded in a direction substantially orthogonal to the web 21. As described above, the first distance L1 of the first clip portion 41 is formed slightly narrower than the plate thickness width t1 of the web 21, so that the first clip portion 41 is elastically sandwiched between the webs 21. be able to. At this time, when the interval between the adjacent through holes 2a is large, the reinforcing metal fitting 7 may be provided between the through holes 2a. As shown in FIG. 7, the reinforcing metal fitting 7 includes a flat plate portion 71 and a projecting portion 72 that protrudes from the flat plate portion 71 at a substantially right angle, and the flat plate portion 71 is bonded and fixed to the web 21. Then, the covering material 3 is pierced into the projecting portion 72 that protrudes in a direction substantially orthogonal to the web 21, whereby the fixing of the covering material 3 contacting the web 21 to the H-section steel 2 can be made stronger. .

  Subsequently, as shown in FIGS. 8A and 8B, the notches 31 of the covering material 3 are respectively inserted into the flanges 22 of the H-section steel 2 from both sides of the web 21 so that the covering material 3 is H. The first projection piece 42 of the first metal fitting 4 and the protrusion 72 (not shown in FIG. 8) of the reinforcing metal fitting 7 used as needed are pierced into the covering material 3. As described above, the slit groove 42c of the first projecting piece 42 is formed so that its bottom portion is closer to the base end of the plate-like portion 42a than the return piece 42b, so that the plate-like portion 42a is formed of the return piece 42b. It will be divided into two branches to the base end side. Therefore, since the area of the plate-like portion 42a is reduced as compared with the case where the slit groove 42c is short, the plate-like portion 42a is easily pierced into the covering material 3 until the return piece 42b is embedded in the covering material 3, and the first After the protruding piece 42 is pierced into the covering material 3, the return piece 42 b can be hooked on the covering material 3 to prevent the covering material 3 from coming off from the first protruding piece 42.

  Next, as shown in FIG. 8B, the second metal fitting 5 is attached around the covering material 3. Specifically, the covering material 3 is fitted between the pair of first side pieces 52 from the flange 22 side of the H-section steel 2 while spreading the pair of first side pieces 52 in a direction away from each other by hand. The second metal fitting 5 is pushed in until the plate piece 51 is brought into contact with the covering material 3 covering the flange 22. Then, the hand is released from the second metal fitting 5, and the first protruding pieces 53 are pierced into the covering material 3 arranged on both sides of the web 21, as shown in FIG. As described above, the second distance L <b> 2 of the pair of first side pieces 52 is substantially the same as the first width W <b> 1 of the covering material 3, and the pair of first side pieces 52 is acute with respect to the first plate piece 51. Therefore, it is possible to suppress the force of pressing the covering material 3 firmly toward the H-section steel 2 and expanding the covering material 3 to the outside. Therefore, it is possible to prevent the covering material 3 from expanding outside and interfering with the interior finishing material when the interior finishing material is applied around the H-shaped steel 2 covered with the covering material 3.

  The covering material fixing structure 6 formed in this manner is such that the covering material 3 is locked to the web 21 by the first metal fitting 4 and the covering material 3 is firmly clamped from the outside by the second metal fitting 5. The covering material 3 can be reliably fixed to the H-shaped steel 2 by preventing the material 3 from being displaced or dropped from the H-shaped steel 2. And since the coating | covering material fixing metal fitting 1 can fix the coating | covering material 3 to the H-section steel 2 easily, without using a special technique, a special tool, and an adhesive agent, it can improve workability. it can. Furthermore, the covering material fixing metal fitting 1 has a double H-section steel as shown in FIG. 9A, and the first protruding piece 42 of the first metal fitting 4 in only one direction as shown in FIG. 9B. If it is formed so as to protrude, it can also be used for square steel, so that it is possible to construct a fixing structure 6 for a covering material according to the situation.

<Second covering material fixing bracket>
Next, the second covering material fixing bracket 8 will be described with reference to FIGS. 10 to 16. The covering material fixing metal fitting 8 of the present application is mainly composed of a pillar formed of H-shaped steel with the front end of the flange facing the outer wall material, and the front end of the flange and the outer wall material are close to each other between the web and the outer wall material. This metal fitting is used to fix a fireproof coating formed on a pillar material when a sufficient working space cannot be secured. In addition, the covering material fixing bracket 8 can be used not only for the H-shaped steel but also for I-shaped steel and groove-shaped steel, and if the web is provided with a through-hole, not only a vertical material but also a horizontal material such as a beam. However, in the illustrated example, the case where the shape steel is a pillar material formed of H-section steel will be described. Moreover, the covering material demonstrated here is a member which can be easily stabbed with a pointed metal fitting similarly to the covering material 3 fixed to the shape steel by the covering material fixing metal fitting 1. In addition, the content similar to the 1st coating | covering material fixing metal fitting 1 attaches | subjects the same code | symbol, and abbreviate | omits description.

  As shown in FIG. 10, the covering material fixing bracket 8 is formed by covering a long H-section steel 2 that forms a through hole 2 a penetrating in the plate thickness direction of the web 21 with the H-section steel 2. 9 is a metal fitting for fixing 9, which is sandwiched from the outside by a first metal fitting 4 sandwiched between the web 21 and having a pair of first protruding pieces 42 and a covering material 3 coated with the H-section steel 2. A C-shaped second metal fitting 10 and a third metal fitting 11 sandwiched between the flanges 22 are provided.

  As shown in FIG. 11, the second metal fitting 10 includes a second plate piece 101 having an elongated flat plate shape and one end in the longitudinal direction of the second plate piece 101 bent at an acute angle with respect to the second plate piece 101. The second side piece 102, the other end in the longitudinal direction of the second plate piece 101 is bent at a substantially right angle with respect to the second plate piece 101, and the second side piece 102 is shorter than the second side piece 102, It has the 2nd projection piece 104 which protrudes from the side piece 102 to the 3rd side piece 103 side, and the 3rd projection piece 105 which protrudes toward the 2nd board piece 101 from the 3rd side piece 103. As shown in FIG. As shown in FIG. 11, the second protruding piece 105 is formed by cutting and raising a part of the third side piece 103, or as shown in FIG. 12, the tip of the third side piece 103 is connected to the second plate piece 101. It can be made to bend diagonally. In addition, since the 2nd protrusion piece 104 is the structure similar to the 1st protrusion piece 53 of the 2nd metal fitting 5 mentioned above, detailed description is abbreviate | omitted.

  As shown in FIGS. 13 and 14, the third metal fitting 11 is formed with a second clip portion 111 in which a flat plate is bent into a substantially U shape in a side view to form a second groove 110, and a side surface of the second groove 110. And a second projecting piece 112 projecting in the opposite direction to the second groove 110 from one second side plate 111a. The second projecting piece 112 has the same configuration as the first projecting piece 42 described above, and a detailed description thereof will be omitted.

  The second clip portion 111 of the third metal fitting 11 includes a flat plate-like second bottom plate 111b, one second side plate 111a obtained by bending one end of the second bottom plate 111b at a substantially right angle, and the other end of the second bottom plate 111b. A first side plate piece 113 bent in a direction approaching one second side plate 111a and a second side plate piece 114 bent in a direction away from one second side plate 111a are formed. The second groove 110 is formed between the second bottom plate 111b, the one second side plate 111a, and the other second side plate 111c. Further, the third distance L3 between one second side plate 111a and one end of the first side plate piece 113 on the second side plate piece 114 side is slightly narrower than the plate thickness width t2 of the flange 22 of the H-section steel 2 shown in FIG. It is formed.

<Second cover fixing structure>
Next, the covering fixing structure 12 using the covering fixing bracket 8 described above will be described. In addition, the same code | symbol is attached | subjected to the structure similar to the fixing metal fitting 6 of a 1st coating | covering material, and description is abbreviate | omitted. As shown in FIG. 10, the covering material fixing structure 12 is a structure in which the covering material 9 is fixed to the H-section steel 2 disposed in the vicinity of the outer wall material 13, and the covering material fixing bracket 8 and the web 21. Are provided with a long H-section steel 2 provided with a through-hole 2 a penetrating in the plate thickness direction, and a molded covering material 9 for covering the H-section steel 2.

  As shown in FIG. 10, the H-section steel 2 has the front end of the flange 22 facing the outer wall member 13, and the gap S from the front end of the flange 22 on the outer wall member 13 side to the outer wall member 13 shown in FIG. Is a gap that allows the operator's arm to enter, and the operator cannot enter the gap between the outer wall material 13 and the web 21 through the gap S. The H-section steel 2 has the same configuration as that of the fixing structure 6 for the covering material, and thus detailed description thereof is omitted.

  The covering material 9 is a felt-like long member installed along the longitudinal direction of the H-section steel 2 as shown in FIGS. 10 and 15 and covers the surface of the web 21 that faces the outer wall material 13. The first covering material 9a, the second covering material 9b formed in a substantially plate shape that integrally covers the H-shaped steel 2 from the indoor side to the web 21, and the flat plate shape that closes the gap S shown in FIG. And a pair of third covering materials 9c. The width | variety of the 1st coating | covering material 9a is formed substantially the same as the width | variety of the web 21, and the double-sided tape 9d is provided in the corner | angular part vicinity. The width W2 of the third covering material 9c is such that when the second covering material 9b is attached to the H-section steel 2, the outer wall material 13 from the side end surface facing the outer wall material 13 of the second covering material 9b shown in FIG. It is formed longer than the fourth distance L4 to the surface on the indoor side. The second covering material 9b has the same configuration as the covering material 3 of the fixing structure 6 of the covering material, and thus detailed description thereof is omitted. The material of each of the covering materials 9a, 9b, and 9c is not particularly limited as long as it is a member having heat insulation or fire resistance performance, but the second covering material 9b and the third covering material 9c are made of felt-like rock wool. If the first covering material 9a is made of felt-like glass wool that is softer than rock wool, the first protruding piece 42 of the first metal fitting 4, the second protruding piece 104 of the second metal fitting 10, and the third fitting 11 of the third metal fitting 11 are used. It is preferable because the two protruding pieces 112 can be easily pierced into the respective covering materials 9a, 9b, 9c, and the first covering material 9a can be easily pushed through the gap S.

  Next, the construction procedure of the covering material fixing structure 12 will be described. First, the first metal fitting 4 is mounted on the web 21 in the same procedure as the first covering material fixing structure 6 from the indoor side. And as shown to Fig.16 (a), the 1st coating | covering material 9a is pushed in from the clearance gap S between the outer wall material 13 and the flange 22, and it is made to contact | abut to the surface facing the outer wall material 13 of the web 21, and outer wall material The first protruding piece 42 protruding to the 13th side is pierced into the first covering material 9a, and a double-sided tape 9d (not shown in FIG. 16) is attached to the flange 22. At this time, when the interval between the through holes 2a is large, the reinforcing metal fitting 7 described above may be installed on the surface of the web 21 on the indoor side. Next, the notch 31 of the second covering material 9b is inserted into the flange 22 protruding to the indoor side, and the first protruding piece 42 protruding to the indoor side is pierced into the second covering material 9b, and the other end of the third metal fitting 11 is inserted. With the second side plate 111c facing toward the first covering material 9a, the second groove 110 is fitted into the flange 22 from the small edge surface side facing the outer wall material 13 of the flange 22. At this time, as described above, since the third distance L3 of the third metal fitting 11 is formed slightly narrower than the plate thickness width t2 of the flange 22, the flange 22 can be elastically sandwiched. Although not shown, a plurality of third metal fittings 11 are installed at predetermined intervals along the longitudinal direction of the flange 22.

  Subsequently, as shown in FIGS. 16A and 16B, the third covering material 9c is disposed on the flange 22 so that no gap is formed between the third covering material 9c and the second covering member 9b. The two protruding pieces 112 are pierced into the second covering material 9 c and the third covering material 9 c is locked to the flange 22. And the edge part by the side of the outer wall material 13 of the 3rd coating | covering material 9c is pushed in between the flange 22 and the outer wall material 13, and the clearance gap S is obstruct | occluded. Then, while spreading the second side piece 102 of the second metal fitting 10 by hand in the direction away from the third side piece 103, the third side piece 103 is penetrated in the thickness direction of the third covering material 9c, and FIG. As shown, the third protruding piece 105 is locked to the distal end portion of the flange 22 on the outer wall material 13 side to release the hand from the second side piece 102, and the second protruding piece 104 is pierced into the first covering material 9a. The second covering material 9b and the third covering material 9c are sandwiched between the second metal fittings 10.

  The covering material fixing structure 12 formed in this way firmly forms the covering material 9 with the covering material fixing bracket 8 even when there is no sufficient gap between the flange 22 and the outer wall material 13. 2 and can prevent the shift | offset | difference and fall from the H-section steel 2 of the coating | covering material 9 reliably. Moreover, since the covering material fixing bracket 8 can easily fix the covering material 3 to the H-section steel 2 without using a special technique, a special tool, and an adhesive, as with the covering material fixing bracket 1. Can be improved.

  Further, the embodiment of the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the scope of the idea of the present invention.

  The covering material fixing bracket, the covering material fixing structure, and the covering material construction method according to the present invention can be suitably used when fixing the fireproof covering material to the shape steel.

1, 8 Cover material fixing bracket 6, 12 Cover material fixing structure 2 H-section steel (section steel)
2a Through hole 21 Web 22 Flange 3, 9 Covering material 4 First metal fitting 40 First groove 41 First clip portion 41a First side plate 42 First protruding piece 5, 10 Second metal fitting 51 First plate piece 52 First side piece 53 1st projection piece 7 Reinforcing metal fitting 71 Flat plate portion 72 Projection portion 101 2nd plate piece 102 2nd side piece 103 3rd side piece 104 2nd projection piece 105 3rd projection piece 11 3rd metal fitting 110 2nd groove 111 2nd Clip part 111a One second side plate 112 Second protruding piece

Claims (10)

A covering material fixing bracket for fixing a formed covering material covering the shape steel to a long shape steel having a through hole penetrating in the plate thickness direction,
A first clip formed by bending a flat plate into a substantially U shape when viewed from the side is fitted into the shape steel from the through hole, and at least one or more first forming the side surface of the first groove. A covering material fixing metal fitting, comprising: a first metal fitting having a first protruding piece protruding from a side plate in a direction opposite to the first groove.   The covering material fixing metal fitting according to claim 1, further comprising a second metal fitting having a substantially C shape in a side view sandwiched between the covering materials covering the periphery of the shape steel.   The second metal fitting includes an elongated flat plate-like first plate piece, a pair of first side pieces in which both ends in the longitudinal direction of the first plate piece are bent at an acute angle with respect to the first plate piece, and a pair 3. The covering material fixing bracket according to claim 2, further comprising: a pair of first projecting pieces that project from the first side piece of the first side piece toward the first side piece facing each other and pierce the covering material. . The first projecting piece has a flat plate-like portion that is gradually widened from the distal end toward the base end side and is provided with a stepped return piece between the distal end and the base end, and the plate-like portion Forming a slit groove extending from the distal end to the proximal end side,
The said slit groove makes the bottom part approach the said base end side of the said plate-shaped part rather than the said return piece, The covering material fixing metal fitting in any one of Claim 1 to 3 characterized by the above-mentioned. A second groove formed by bending a flat plate into a substantially U shape when viewed from the side is fitted to the shape steel, and the second groove from one second side plate forming the side surface of the second groove. And a third fitting having a second protruding piece protruding in the opposite direction, and
The first metal fitting has a pair of first protruding pieces protruding from the pair of first side plates,
The second metal fitting includes an elongated flat plate-like second plate piece, a second side piece obtained by bending one end of the second plate piece in the longitudinal direction at an acute angle with respect to the second plate piece, and the second The other end of the plate piece in the longitudinal direction is bent at a substantially right angle with respect to the second plate piece, and is shorter than the second side piece, and from the second side piece to the third side piece side. 3. The second projecting piece protruding and piercing the covering material, and the third projecting piece projecting obliquely from the third side piece toward the second plate piece. Covering material fixing bracket. A long shaped steel provided with a plurality of through-holes penetrating in the plate thickness direction along the longitudinal direction;
A molded covering material covering the periphery of the shape steel;
A covering material fixing metal fitting according to any one of claims 1 to 4, comprising: a covering material fixing structure. A long section steel having a web and a pair of flanges orthogonal to the web, and a plurality of through holes penetrating the web in the plate thickness direction along the longitudinal direction of the web;
A molded coating covering the web and the flange;
A covering material fixing metal fitting according to claim 5.   The metal plate further comprising a reinforcing metal fitting having a flat plate portion attached to the surface of the shape steel, and a protruding portion protruding substantially perpendicularly from the flat plate portion and piercing the covering material. The fixing structure of the covering material according to 6 or 7. Using the covering material fixing metal fitting according to any one of claims 1 to 4, a formed covering material for covering the shape steel is formed on a long shape steel having a through hole penetrating in the plate thickness direction. A fixing method for fixing a covering material to be fixed,
The first clip portion of the first metal fitting is inserted into the shape steel through the through hole, the covering material covering the periphery of the shape steel is pierced into the first projecting piece, and the second metal fitting is attached to the covering material. A fixing construction method for a covering material characterized by being sandwiched around. Using the covering material fixing metal fitting according to claim 5, a long shape steel having a web and a pair of flanges orthogonal to the web and having a through hole penetrating in the thickness direction in the web is formed. A method for fixing a covering material for fixing a formed covering material for covering steel,
The first clip part of the first metal fitting is inserted into the web from the through hole and the covering material covering both sides of the web is pierced into the first projecting piece,
The second clip portion of the third metal fitting is inserted into the front end portion of the flange in the width direction with the second projecting piece facing the opposite direction of the flange, and on the side of the flange where the web projects. Piercing the second projecting piece with the covering material covering the surface opposite to the surface,
A method of fixing a covering material, wherein the second metal fitting is sandwiched around the covering material.

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