JP3138328U - Steel formwork panel and steel formwork panel wall used for concrete wall rail, concrete wall rail and floor slab - Google Patents

Abstract

The present invention provides a member that serves both as a mold and an outer wall, has sufficient rigidity without using a stiffener, and has excellent corrosion resistance.
From a rectangular panel front surface 21, a panel side surface 22 extending substantially orthogonally to the panel front surface from both side edges of the panel front surface 21 toward the back surface side, and a side edge of the panel side surface A panel back surface 23 extended substantially orthogonally or inclined to the side surface of the panel, a panel bottom surface 25 extended substantially orthogonally to the panel front surface from the lower end edge of the front surface of the panel toward the back surface side, and a panel A panel upper surface 24 that is inclined and extended from the upper end edge of the front surface toward the rear surface side with respect to the front surface of the panel, and is formed integrally by bending one pre-plated thin steel plate material. Formwork panel 2. The pair of panel side faces 22 are provided with a plurality of connecting holes 26 that are opened at the same vertical height at different vertical heights.
[Selection] Figure 5

Description

  The present invention relates to a steel formwork panel and a steel formwork panel wall used for a concrete wall rail placed at a side edge of a floor slab in a bridge structure such as a road bridge, a viaduct, a pedestrian bridge or a railway bridge, and It relates to concrete wall railings and floor slabs.

  In general, in bridge structures such as road bridges and viaducts, in order to prevent automobiles or people passing over the bridge from jumping out of the bridge, or leakage of noise from the bridge due to running of automobiles, etc. A concrete wall rail is arranged so as to extend toward the bridge axis direction with respect to the side edge of the floor slab in the structure.

  This concrete wall railing has a formwork member having a predetermined shape installed on the side edge of the floor slab, and concrete is placed and filled inside the formwork member, and after the concrete has hardened, the formwork member (See, for example, Patent Document 1 and Patent Document 2).

  In particular, in recent years, the formwork member may be left as it is without being removed even after the concrete is hardened, and the formwork member may be used as an outer wall of a concrete wall rail. As a result, the work for removing the formwork member can be omitted, and the work on the external scaffolding such as a support work required at the time of the work for removing the formwork member becomes unnecessary, and the workability is improved.

  FIG. 12A shows an example in which a concrete wall rail 100 is actually constructed by using a flat steel mold member 103 as a formwork member / outer wall.

Reinforcing bars 108 are pre-arranged at the side end 102a of the floor slab 102 in the bridge structure 101 when the floor slab 102 is constructed, and a pair of angle members 104 are sandwiched between the reinforcing bars 108 via bolts 105 and the like. Are connected and fixed on the floor slab 102. A pair of steel mold members 103 are connected and fixed to the pair of angle members 104 via bolts 105 and the like. The pair of steel mold members 103 are standing in a substantially vertical direction, and are configured to be spaced apart from each other. Between the pair of steel mold members 103, concrete is placed and filled to form a concrete body 106, and the steel mold members 103 are left as they are even after the concrete is hardened. A concrete wall rail 100 is constructed.
JP-A-4-250204 JP-A-6-313304

  By the way, with respect to the steel formwork member 103, when placing concrete, a large horizontal pressure is applied by the placed concrete, and an out-of-plane deformation occurs. Since this steel mold member 103 is also used as a structure outer wall, it is required that the surface of the steel mold member 103 is well-balanced even after construction from the viewpoint of design. For this reason, in order to suppress an out-of-plane deformation, it is required to have rigidity.

  For this reason, a stiffener 107 as shown in FIGS. 12B and 12C is usually attached to one surface 103a of the steel mold member 103. FIG. The stiffener 107 is formed of a shape having excellent rigidity such as L-shaped steel, for example, and is directed in the longitudinal direction and the lateral direction of the steel mold member 103 as shown in FIG. It is arranged to be extended. One side surface 107a of the stiffener 107 is attached to the steel mold member 103 by a joining means such as a driving bolt or stud welding.

  However, when the steel mold member 103 is attached by driving bolts, the bolt heads appear to be exposed on the surface. Since this steel mold member 103 is used as an outer wall of a structure, it is not preferable that the bolt head is exposed on the surface and unevenness is generated from the viewpoint of design.

  Moreover, when attaching by stud welding, since heat is provided with respect to the steel mold member 103 at the time of welding operation, welding distortion tends to occur on the surface of the steel mold member 103, which is not preferable as the outer wall of the structure. Further, in order to prevent such welding distortion from occurring, it is conceivable to perform welding by setting a welding voltage low during welding work, but in this case, poor welding is likely to occur, which is not preferable in terms of quality control.

  That is, when the purpose of improving the rigidity of the steel mold member 103 is to attach a member such as the stiffener 107, the above-described problem has occurred.

  Moreover, since the steel formwork member 103 is used as an outer wall of a structure, corrosion resistance is required to prevent rust due to the external environment.

  For this reason, for example, it is considered to use the steel formwork member 103 having the required corrosion resistance by using a steel plate that has been plated from the stage before processing the steel plate, so-called pre-plating. It is done. However, conventionally, when the stiffener 107 is attached to the pre-plated steel formwork member 103 by stud welding, welding becomes difficult as the thickness of the plating layer increases, and the stiffener 107 is removed. I couldn't install it. For this reason, when using the pre-plated steel mold member 103, the plating layer cannot be thickened, and there arises a problem that the steel mold member 103 corresponding to the required corrosion resistance performance cannot be used. It was.

  Therefore, the present invention has been devised in view of the above-mentioned problems, and the object of the present invention is to make it possible to use both the formwork at the time of construction of the concrete wall rail and the outer wall of the concrete wall rail. An object of the present invention is to provide a steel formwork panel and a steel formwork panel wall body used for a concrete wall rail having sufficient rigidity without using a stiffener and also having excellent corrosion resistance. . The object of the present invention is to provide a concrete wall rail and a floor slab using the steel formwork panel and the steel formwork panel wall.

  A steel formwork panel used for a concrete wall rail according to claim 1 is a rectangular panel front surface and extends substantially orthogonally to the panel front surface from both side edges of the panel front surface toward the back surface side. A panel side surface, a panel back surface extending from the side edge of the panel side surface substantially orthogonally or inclined to the panel side surface, and the panel front surface from the lower end edge of the panel front surface toward the back surface side. The bottom surface of the panel that extends substantially orthogonal to the top surface of the panel and the top surface of the panel that is inclined and extended from the upper edge of the front surface of the panel toward the back surface are made of one pre-plated product. A thin steel plate material is integrally formed by bending, and a plurality of connecting holes formed at the same vertical height are formed on the pair of panel side surfaces. And it is provided on.

  The steel formwork panel used for the concrete wall rail according to claim 2 is the device according to claim 1, wherein the front surface of the panel has a concave groove portion that is concave toward the back side in a substantially horizontal direction and / or Alternatively, it is formed by extending in a substantially vertical direction.

  The steel formwork panel wall body used for the concrete wall rail according to claim 3 is disposed adjacent to each other such that the panel side surfaces of each other face each other so that the front surfaces of the panels form substantially the same plane. The two or more steel formwork panels according to Item 1 or 2 are connected by a connection fitting inserted into a connection hole on the side surface of the panel.

  The steel formwork panel wall body used for the concrete wall rail according to claim 4 is the invention according to claim 3, wherein a water stop material is interposed between the abutted panel side surfaces. Features.

  The steel formwork panel wall used for the concrete wall rail according to claim 5 is the device according to claim 3 or 4, wherein the one steel formwork panel to be connected is on the side of the panel to be abutted. The panel back surface is extended from the side edge of the panel side surface toward the inside so as to be substantially orthogonal or inclined with respect to the panel side surface, and the other steel formwork panel to be connected is a panel to be abutted The panel back surface on the side surface is extended from the side edge of the panel side surface to the outside so as to be substantially orthogonal or inclined with respect to the panel side surface, and on the panel back surface of the one steel formwork panel to be connected On the other hand, the panel back surface in the said other steel formwork panel which should be connected is faced | matched, It is characterized by the above-mentioned.

  The steel formwork panel wall body used for the concrete wall rail according to claim 6 is the invention according to claim 5, wherein a water-stopping material is interposed between the back surfaces of the butted panels. Features.

  The concrete wall rail according to claim 7 is a concrete wall rail installed at a side end portion in a direction orthogonal to the bridge axis of the floor slab, and extended toward the bridge axis direction. The steel formwork panel according to claim 1 or 2, or the steel mold panel according to any one of claims 3 to 6, wherein the steel plate is disposed and fixed so that the surface side faces outward in the direction perpendicular to the bridge axis in the floor slab. It is characterized by comprising a steel formwork panel wall and a concrete body formed on the back side of the steel formwork panel or the steel formwork panel wall.

  The floor slab according to claim 8 is a floor slab arranged on a main girder extended in the direction of the bridge axis, and is made of the concrete according to claim 7 at a side end in the direction orthogonal to the bridge axis. It is characterized by a wall rail.

  The steel formwork panels 2 and 3 in the present invention are integrally formed by bending one pre-plated thin steel plate material, and also provided with a panel back surface 23, so that they are used as formwork materials. In this case, it has excellent rigidity against the horizontal pressure due to the concrete and can sufficiently prevent out-of-plane deformation. For this reason, it becomes unnecessary to attach a member such as the stiffener 107 attached to the steel mold member 103 as shown in FIG. 12, and the bolt head exposed on the surface side of the panel and welding distortion Unevenness does not occur on the surface. Therefore, even when the steel formwork panels 2 and 3 that are formwork materials and the steel formwork panel wall body 4 formed by connecting them are used as the outer wall of the concrete wall rail 1, Even after this, it becomes possible to maintain a balanced shape on the surface.

  Moreover, since the steel mold panels 2 and 3 use the pre-plated thin steel plate member, it is excellent also from a viewpoint of corrosion resistance. In particular, the steel mold panels 2 and 3 have a gloss unique to plating uniformly applied to the entire surface, and are aesthetically pleasing without being subjected to a painting operation, so that the painting operation can be omitted. In this case, it is not necessary to repaint and rust prevent the steel formwork panels 2 and 3 after the completion of construction. Therefore, the steel formwork panels 2 and 3 are very useful from the viewpoint of life cycle cost. Are better.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings, taking a bridge structure using a concrete floor slab as an example.

  FIG. 1 shows a configuration of a bridge structure 10 in which a concrete wall rail 1 to which the present invention is applied is arranged. The bridge structure 10 is mainly composed of a main girder 11 and a floor slab 12. The main girder 11 is made of I-shaped steel or the like extending in the bridge axis direction B, and is arranged at a predetermined interval from each other in the bridge axis orthogonal direction A. The floor slab 12 is disposed on the main girder 11 and is supported by the main girder 11. This main girder 11 is supported and installed on a pier (not shown) via a support.

  The bridge structure 10 is embodied by, for example, a road bridge, a viaduct, a pedestrian bridge, a railway bridge, and the like. The floor slab 12 is embodied by a concrete floor slab, a synthetic floor slab, a steel floor slab, or the like. In this bridge structure 10, the bridge axis orthogonal direction A as shown in FIG. 1 corresponds to the traveling direction of a vehicle, a pedestrian, or the like.

  A concrete wall height column 1 extending in the bridge axis direction B is installed at both end portions 12 a in the bridge axis orthogonal direction A of the floor slab 12. A front sectional view around the concrete wall rail 1 is as shown in FIG.

  The concrete wall rail 1 includes a steel formwork panel wall body 4 arranged and fixed at the side end portion 12a of the floor slab 12 so that the surface side thereof faces outward in the bridge axis orthogonal direction A of the floor slab 12. And a concrete body 13 formed on the back side of the steel formwork panel 4. In the concrete body 13, a reinforcing bar 14 is arranged in a standing state vertically above the floor slab 12, whereby the concrete body 13 is integrated with the floor slab 12.

  The steel formwork panel wall body 4 used for the concrete wall height column 1 connects the side end portions 33 of the plurality of steel formwork panels 2 and 3 as shown in FIGS. It is constituted by. First, the structure of the steel mold panels 2 and 3 will be described in detail.

  As shown in FIGS. 5 (a) and 5 (b), the steel formwork panel 2 has a rectangular panel front surface 21 and a panel front surface 21 in the left-right direction from both side edges toward the back surface side. A pair of panel side surfaces 22 extended substantially orthogonal to the front surface 21 and extended from the lower end edge in the lower direction of the panel front surface 21 toward the rear surface side substantially orthogonal to the panel front surface 21. A panel bottom surface 25 and a panel top surface 24 that is inclined and extended with respect to the panel front surface 21 from the upper end edge in the upward direction of the panel front surface 21 toward the back surface side.

  Further, as shown in FIG. 5B, the pair of panel side surfaces 22 further includes a panel back surface 23 a that extends from the side edge toward the inside and substantially orthogonal to the panel side surface 22. The both end portions 33a of the steel formwork panel 2 are configured to have a substantially U-shaped cross section. Further, the panel side surface 22 is continuously in contact with the side edge of the panel upper surface 24 at its upper end edge, and the panel back surface 23a is also in continuous contact with the upper end edge of the panel upper surface 24 at its upper end edge. ing. These contact portions are fixed by spot welding or the like, and one surface of the panel does not protrude from the upper part of the steel formwork panel 2, so that safety is taken into consideration.

  The pair of panel side surfaces 22 are respectively provided with connecting holes 26 at the same vertical height, and the connecting holes 26 are opened at a plurality of different vertical heights. Further, a plurality of connection holes 27 are also formed in the panel bottom surface 25 over a plurality.

  A flat plate-like support member connector 28 having a plurality of bolt holes at the middle portion thereof is connected and fixed to the outside of the panel side surface 22 by bolts or the like through the connection holes 26. A support member 29 made of L-shaped steel is further connected and fixed to the support member connector 28 by a bolt or the like through a bolt hole. The support member 29 can be placed on the floor slab 12 or the like on one end side 29a of the steel formwork panel 2 when the panel bottom surface 25 is placed on the floor slab 12 or the like. The length is adjusted in advance so that Thereby, the steel formwork panel 2 can be stably supported in an upright state.

  As shown in FIGS. 5 (c) and 5 (d), the steel formwork panel 3 has substantially the same structure as the steel formwork panel 2, and has the same structure as the steel formwork panel 2. Are denoted by the same reference numerals and the description thereof is omitted.

  In the steel formwork panel 3, one panel side surface 22 of the pair of panel side surfaces 22 has a panel back surface 23a that extends substantially orthogonally from the side edge toward the inside. The other panel side surface 22 has a panel back surface 23b that extends from the side edge to the outside substantially orthogonally. As a result, one side end 33a of the steel mold panel 3 has a substantially U-shaped cross section, and the other side end 33b protrudes outward from the steel mold panel 3. Yes.

  In the steel formwork panel 3, the support member connector 28 is attached to the inside of the panel side surface 22.

  The steel mold panels 2 and 3 having such a configuration are integrally formed by bending one pre-plated thin steel plate material. Pre-plating here means what manufactured the steel plate plated by the continuous hot dipping equipment in the coil state. The pre-plated thin steel sheet material is not particularly limited as long as it is a general pre-plated steel sheet, for example, “Super-Dima” steel sheet, which is a product of Shin Nippon Steel Co., Ltd. Is preferably used. “Superdimer” steel sheet is cooled in a hot dip galvanizing bath containing 2 to 19% aluminum, 1 to 10% magnesium and 0.01 to 2% silicon (however, the total amount of aluminum and magnesium is 20% or less). It is a steel plate manufactured by continuously dipping a rolled steel plate. Aluminum and magnesium are both components for improving the corrosion resistance, and silicon is a component for improving the adhesion of the plating layer. In addition to being cheaper than stainless steel, a steel plate on which such plating is applied can provide higher quality corrosion resistance than hot dip galvanizing.

  Hereinafter, the manufacturing method for forming the steel formwork panels 2 and 3 will be described by taking the case of forming the steel formwork panel 2 as an example.

  First, as shown to Fig.6 (a), it cuts along the dashed-dotted line 42 with respect to the pre-plated thin steel plate material 40 with the cutting device by which NC (Numerical Control) control was carried out, for example. This alternate long and short dash line 42 has a shape corresponding to the unfolded state of the panel before bending the steel formwork panel 2. Further, the connecting holes 26 and 27 are simultaneously formed during the cutting process. Incidentally, an alternate long and short dash line 42 shown in FIG. 6A is an imaginary line for explanation, and in actuality, cutting is performed based on numerical information input to the NC control device.

  After performing the cutting process, a pre-plated thin steel plate material 41 having a shape corresponding to the developed state of the steel mold panel 2 as shown in FIG. 6B is formed. The pre-plated thin steel plate material 41 has a region 41e having a shape corresponding to the panel side surface 22 on the left and right sides centered on a rectangular region 41e corresponding to the panel front surface 21, and each region 41a. Further, a region 41d having a shape corresponding to the panel back surface 26 is located on the outer side end of the panel. A region 41b having a shape corresponding to the panel upper surface 24 is located above the region 41e, and a region 41c having a shape corresponding to the shape of the panel bottom surface 25 is located below the region 41e.

  The one pre-plated thin steel plate material 41 having such a shape is subjected to bending so that a fold line is formed at a one-dot chain line 43 as shown in FIG. The steel formwork panel 2 provided with the panel front surface 21 and the panel side surface 22 as shown in FIG. 6C is integrally formed. The same applies to the case where the steel formwork panel 3 is formed.

  When the steel formwork panel wall body 4 is constructed from the steel formwork panels 2 and 3 configured as described above, the side end portions 33 are connected between the plurality of constituent formwork panels 2 and 3. Will build. Hereinafter, the connection method between the steel formwork panels will be described by taking as an example a case where the side end part 33a of the steel formwork panel 2 and the side end part 33b of the steel formwork panel 3 are connected.

  First, as shown by the two panels located on the right side of FIGS. 4A and 4B, the side end portions 33a and 33b of each other so that the front surfaces 21 of the panels form substantially the same plane. The panel side surfaces 22 in FIG. In this case, the side end portion 33a of the steel formwork panel 2 has a substantially U-shaped cross section, and the side end portion 33b of the steel formwork panel 2 protrudes outward from the panel back surface 23b. It has a shape, and not only the panel side surface 22 but also the panel back surfaces 23a and 23b face each other.

  Thereafter, as shown in FIG. 7A, a coupling fitting 31 such as a bolt is inserted into the coupling hole 26 in the two panel side faces 22 that are butted together, and the panel side faces 22 are connected and fixed together by the coupling fitting 31. Then, the side end portions 33a and 33b of the steel formwork panels 2 and 3 are connected to each other.

  Incidentally, as shown in FIG. 7A, a water stop material 32 is interposed between the two panel side surfaces 22 and the two panel back surfaces 23a and 23b. The water blocking material 32 is interposed for the purpose of preventing uncured concrete from flowing out between the panels when the concrete is placed on the back side of the steel mold panels 2 and 3. It is not always necessary to intervene. Moreover, it may be interposed only between the panel side surfaces 22 or only between the panel back surfaces 23a and 23b, and this also sufficiently prevents the outflow of concrete.

  The water blocking material 32 is preferably embodied by, for example, a rubber sponge, a polyethylene foam, a urethane foam, or the like, and has water expandability. At the time of connection between the panels, a water stop material 32 is bonded in advance to the outer surface side of the panel side surface 22 and the panel rear surface 23 with an adhesive or the like, and then the panel side surfaces are abutted and arranged. The connection fitting 31 is connected and fixed.

  In the above-described example, the side end portion 33a having a substantially U-shaped cross section is connected to the side end portion 33b having a shape in which the panel back surface 23b protrudes outward, and this connection structure is a steel mold. This is applied when the frame panel 2 and the steel form panel 3 are connected, or when the steel form panels 3 are connected to each other.

  When the steel formwork panels 2 are connected to each other, the side end portions 33a having a substantially U-shaped cross section are connected to each other. That is, first, as shown in FIG. 7B, the panel side surfaces 22 are abutted and arranged adjacent to each other so that the panel front surfaces 21 form substantially the same plane. Thereafter, as in the case where the side end portion 33a and the side end portion 33b are connected, the connecting metal fitting 31 is inserted into the connecting hole 26 in the two panel side surfaces 22 which are abutted, and the panel side surfaces 22 are connected to each other. The side end portions 33a are connected to each other while being fixed. In this case, the water blocking material 32 is interposed only between the panel side surfaces 22.

  In addition, since the connection structure as shown in FIG. 7 (a) can perform positioning more easily than the connection structure as shown in FIG. 7 (b), and the outflow of concrete can be further prevented, A preferred connection structure. That is, in the case of the connection structure as shown in FIG. 7A, when connecting the panels, the panel side surface 22 and the panel back surface 23b in one panel are connected, and the panel side surface 22 and the panel back surface 23a in another panel are connected. Therefore, positioning can be easily performed because positioning is completed only by abutting with respect to each other. In addition, in the case of the connection structure as shown in FIG. 7A, since the concrete is prevented from flowing out by utilizing the space between the panel rear surfaces 23 in addition to the space between the panel side surfaces 22, the concrete can be further prevented from flowing out.

  By connecting the steel formwork panels 2 and 3 by applying the above-described connection structure, the steel formwork panel wall body 4 as shown in FIG. 4A is constructed. When this steel formwork panel wall body 4 is used as a concrete wall height column 1, the surface side of the panel front surface 21 faces outward in the bridge axis orthogonal direction A in the floor slab 12, so that the concrete wall height column 1 It will function as the outer wall of. In addition, the steel formwork panel wall body 4 functions as a formwork material by placing concrete on the back side of the panel front surface 21.

  The procedure for constructing the concrete wall rail 1 using the steel form panel wall 4 constructed as described above will be described together with the action of the steel form panel wall 4 with reference to FIG.

  First, as shown in FIG. 8 (a), a steel formwork panel wall body, which is a pair of formwork materials, with a reinforcing bar 14 pre-arranged on the side end portion 12a of the floor slab 12 interposed therebetween. 4 and the mold material 51 are arranged. The steel formwork panel wall 4 is arranged so as to extend in the direction of the bridge axis. The steel formwork panel wall 4 is mounted by placing a panel bottom surface 25 on the floor slab 12 and inserting a connection fitting 30 such as a bolt through a connection hole 27 in the panel bottom surface 25.

  The mold material 51 is extended toward the bridge axis direction B, and is fixed on the floor slab 12 by a fixing means (not shown) so as to be in an upright state. The formwork material 51 is embodied by a wooden frame or the like, for example, and the shape thereof is not particularly limited. In order to prevent the steel formwork panel wall body 4 and the formwork material 51 from moving in the front-rear direction of the surface due to horizontal pressure when placing concrete, the outer shape of these formwork materials is almost the same. A metal plate or the like having the same shape may be installed as a pressing metal on the surface opposite to the concrete placing surface.

  Next, concrete is placed between the steel formwork panel wall 4 and the formwork 51 with the back side of the steel formwork panel wall 4 as the concrete placement surface. In this case, the concrete is introduced through an opening 53 formed between the upper part of the steel form panel panel wall 4 and the upper part of the form member 51 which are a pair of form members. Thereafter, a curing period is provided over a predetermined period, and after the concrete is hardened, the formwork material 51 is removed, and the concrete wall rail 1 is constructed. The constructed concrete wall rail 1 is composed of shapes corresponding to the shapes of the formwork material 51 and the steel formwork panel wall 4.

  Here, at the time of placing the concrete, as shown in FIG. 8 (b), the panel front surface 21 of each of the steel formwork panels 2, 3 constituting the steel formwork panel wall body 4 by the placed concrete. In contrast, a large horizontal pressure F is applied. Here, since the steel formwork panels 2 and 3 are formed by bending the peripheral edge of the panel front surface 21, the member rigidity is improved as compared with a flat steel plate. In particular, the steel formwork panels 2 and 3 have a panel back surface 23 extending substantially orthogonally from the side edge of the panel side surface 22 toward the inside or outside, so that the panel side surface 22 and the panel back surface 23 are separated from each other. The bent portion 52 formed becomes a fixed end, and the vertical deformation of the steel mold panel 2 is further suppressed. For this reason, the steel formwork panel wall body 4 has drastically improved rigidity compared to the flat plate-shaped steel plate, and is sufficiently out-of-plane deformed by the horizontal pressure F as shown in FIG. Can be prevented.

  As described above, the steel formwork panels 2 and 3 in the present invention are integrally formed by bending one pre-plated thin steel plate material, and the panel back surface 23 is provided. When used as a frame material, it has excellent rigidity against horizontal pressure due to concrete and can sufficiently prevent out-of-plane deformation. For this reason, it becomes unnecessary to attach a member such as the stiffener 107 attached to the steel mold member 103 as shown in FIG. 12, and the bolt head exposed on the surface side of the panel and welding distortion Unevenness does not occur on the surface. Therefore, even when the steel formwork panels 2 and 3 that are formwork materials and the steel formwork panel wall body 4 formed by connecting them are used as the outer wall of the concrete wall rail 1, The steel formwork panels 2 and 3 can be used both as the formwork in the construction of the concrete wall rail 1 and the outer wall of the concrete wall rail 1 because the shape can be maintained evenly on the surface. It is a very suitable member as a member.

  Moreover, since the steel mold panels 2 and 3 use the pre-plated thin steel plate member, it is excellent also from a viewpoint of corrosion resistance. In particular, the steel mold panels 2 and 3 have a gloss unique to plating uniformly applied to the entire surface, and are aesthetically pleasing without being subjected to a painting operation, so that the painting operation can be omitted. In this case, it is not necessary to repaint and rust prevent the steel formwork panels 2 and 3 after the completion of construction. Therefore, the steel formwork panels 2 and 3 are very useful from the viewpoint of life cycle cost. Are better.

  Incidentally, in the present invention, since it is not necessary to attach the stiffener 107, it is not necessary to apply stud welding to the formwork material, and accordingly, the plating thickness of the steel formwork panels 2 and 3 is increased. It becomes possible to do. Accordingly, it is possible to provide the steel mold panels 2 and 3 having a plating thickness corresponding to the required corrosion resistance.

  Moreover, in this invention, since a plating process and a stiffener attachment operation | work can be abbreviate | omitted, workability is excellent. In addition, compared to the long steel plate that has been used as a formwork and outer wall in the past, the steel formwork panels 2 and 3 are relatively small, so that they can be easily installed during transportation and construction. Are better.

  Incidentally, in the present invention, the panel back surface 23 of the steel formwork panels 2 and 3 is extended from the side edge of the panel side surface 22 substantially orthogonally to the panel side surface 22. 9 (a) and FIG. 9 (b), the panel rear surface 23 may be extended from the side edge of the panel side surface 22 while being inclined with respect to the panel side surface 22. The inclination angle between the panel side surface 22 and the panel back surface 23 is not particularly limited. Even in this case, the steel mold panels 2 and 3 can sufficiently exhibit the effect of preventing the out-of-plane deformation at the time of placing concrete. The effect of preventing the out-of-plane deformation is most effectively exhibited when the panel back surface 23 is extended substantially orthogonal to the panel side surface 22.

  In addition, the steel formwork panel 2 in FIG. 9A is extended with the panel back surface 23a at the side end portions 33a inclined toward the panel side surface 22 from the side edge of the panel side surface 22 to the inside. 9 (b), the panel back surface 23b at one side end portion 33b is inclined with respect to the panel side surface 22 from the side edge of the panel side surface 22 to the outside. Has been extended.

  When the side end portions 33a and 33b in the steel formwork panels 2 and 3 are connected to each other, as shown in FIG. 9 (c), the panels are arranged so that the front surfaces of the panels form substantially the same plane. The side surfaces 22 are abutted with each other, the panel back surfaces 23a and 23b are butted against each other, the coupling metal 31 is inserted into the coupling hole 26 in the two abutted panel side surfaces 22, and the side end portions 33a and 33b are inserted. They are connected and fixed to each other by a connecting fitting 31. Similarly, when the side end portions 33a of the two steel formwork panels 2 are connected to each other, as shown in FIG. The side end portions 33 a are connected and fixed by the connecting metal fitting 31 through the use hole 26. In any case, the example shown in FIG. 9 shows an example in which the water blocking material 32 is interposed.

  Moreover, in this invention, as shown in FIG. 10, you may make the recessed groove part 61 which makes a concave shape toward the back surface side of a panel with respect to the panel front surface 21 by an extrusion process, an embossing, etc. The concave groove portion 61 is formed to extend in a groove shape substantially in the horizontal direction, and thereby the rigidity of the panel front surface 21 against horizontal deformation is dramatically improved.

  In addition, it is preferable that the cross-sectional shape seen from the side surface side of the concave groove portion 61 is a square or a trapezoid, and in this case, particularly excellent rigidity is obtained. Further, a plurality of the recessed groove portions 61 may be provided on the panel front surface 21 as shown in FIGS. In addition, the recessed groove portion 61 may be formed in a groove shape extending in a substantially vertical direction, or may be formed in a large number of dot shapes. Furthermore, the concave groove 61 may be formed over a wide area, as shown in FIG.

  Further, in the present invention, it is of course possible to install and use the steel form panel panels 2 and 3 alone on the floor slab 12 instead of the steel form panel panel wall 4.

  Further, the water blocking material 32 may be interposed between the panel bottom 25 and the floor slab 12 when the steel formwork panel wall body 4 or the like is disposed on the floor slab 12. Thereby, it is possible to prevent uncured concrete from flowing out between the panel bottom surface 25 and the floor slab 12.

  Moreover, as shown in FIG. 8, the structure which fixes the panel bottom face 25 on the floor slab 12 is not specifically limited. For example, when the floor slab 12 is composed of a synthetic floor slab having a steel plate as a bottom plate, a steel floor slab, or the like, the panel bottom surface 25 may be fixed to the bottom plate by welding. In this case, the connection hole 27 in the panel bottom surface 25 may not be opened.

It is a block diagram of the bridge structure which has arrange | positioned the concrete wall rail to which this invention is applied. It is front sectional drawing of the concrete wall rail to which this invention is applied. It is a perspective view of the steel formwork panel wall body to which the present invention is applied. It is a figure which shows the steel formwork panel wall body to which this invention is applied, (a) is the front view, (b) is the plane sectional drawing. It is a figure which shows the steel formwork panel to which this invention is applied, (a) is the perspective view, (b) is the plane sectional view, (c) is the perspective view of other steel formwork panels, d) is a plan sectional view thereof. It is a figure for demonstrating the manufacturing method of the steel formwork panel to which this invention is applied. It is a figure which shows the connection state between steel formwork panels. It is a figure for demonstrating the effect in the case of constructing a concrete wall rail with the steel formwork panel to which this invention is applied. It is a figure for demonstrating the other structure of steel formwork panels, (a) And (b) is a plane sectional view of a steel formwork panel, The (c) and (d) are these steel formwork It is a plane sectional view showing the connection state between panels. It is a figure for demonstrating the site | part to which embossing is performed with respect to the steel formwork panel wall body to which this invention is applied, (a) is a front view of a steel formwork panel wall body, (b) is CC sectional view, (c) is DD sectional view. It is another figure for demonstrating about the site | part which is embossed with respect to the steel formwork panel wall body to which this invention is applied, (a) is a front view of a steel formwork panel wall body, (B) is the EE sectional view, (c) is the FF sectional view. It is a figure for demonstrating the problem in a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Concrete wall rail 2, 3 Steel formwork panel 4 Steel formwork panel wall 10 Bridge structure 11 Main girder 12 Floor slab 13 Concrete 14 Reinforcement 21 Panel front surface 22 Panel side surface 23 Panel back surface 24 Panel upper surface 25 Panel bottom surface 26 , 27 Connecting hole 28 Support member connector 29 Support member 29a One end side 30, 31 Connecting bracket 32 Water stop material 33 Side end portion 40, 41 Pre-plated thin steel plates 41a, 41b, 41c, 41d, 41e Regions 42, 43 Dotted line 51 Formwork 52 Bending portion 53 Opening portion 61 Concave groove portion 100 Concrete wall height rail 101 Bridge structure 102 Floor slab 102a Side end portion 103 Steel plate 103a One side 104 Angle material 105 Bolt 106 Concrete 107 Stiffener 107a One side 108 Reinforcing bar

Claims (8)

A rectangular panel front surface, a panel side surface extending substantially orthogonally to the panel front surface from both side edges of the panel front surface toward the back surface side, and a side edge of the panel side surface to the panel side surface A panel rear surface extending substantially orthogonally or obliquely to the panel, a panel bottom surface extending substantially orthogonal to the panel front surface from the lower end edge of the panel front surface toward the rear surface side, and the panel front surface The upper surface of the panel is inclined and extended with respect to the front surface of the panel from the upper edge toward the back surface, and is integrally formed by bending one pre-plated thin steel plate material,
A plurality of connecting holes, which are opened at the same vertical height, are provided on the side surfaces of the pair of panels at different vertical heights. Steel formwork panel. The concrete wall according to claim 1, wherein a concave groove portion that is concave toward the rear surface side is formed on the front surface of the panel so as to extend in a substantially horizontal direction and / or a substantially vertical direction. Steel formwork panel used for handrails. The two or more steel formwork panels according to claim 1, which are arranged adjacent to each other such that the panel side surfaces of each other face each other so that the front surfaces of the panels form substantially the same plane. A steel formwork panel wall body used for a concrete wall rail, characterized by being connected by a connecting metal fitting inserted into a hole for use. 4. A steel formwork panel wall body used for a concrete wall rail according to claim 3, wherein a water-stopping material is interposed between the abutted panel side surfaces. One steel formwork panel to be connected is such that the panel back surface on the side surface of the panel to be abutted is extended from the side edge of the panel side surface toward the inside so as to be substantially orthogonal or inclined with respect to the panel side surface. Become
The other steel formwork panel to be connected is such that the panel rear surface on the side surface of the panel to be joined is extended from the side edge of the panel side surface to the outside so as to be substantially orthogonal or inclined with respect to the panel side surface. Become
5. The concrete according to claim 3, wherein a panel back surface of the other steel formwork panel to be connected is abutted against a panel back surface of the one steel formwork panel to be connected. A steel formwork panel wall used for the wall of a wall. 6. A steel formwork panel wall body used for a concrete wall rail according to claim 5, wherein a water-stopping material is interposed between the butted panel back surfaces. A concrete wall rail installed at the side end in the direction orthogonal to the bridge axis of the floor slab and extended toward the bridge axis direction,
The steel formwork panel according to claim 1 or 2, or the steel formwork panel according to any one of claims 3 to 6, which is arranged and fixed at a side end portion of the floor slab so that a surface side faces outward in a direction perpendicular to the bridge axis in the floor slab. Or a steel formwork panel wall according to claim 1;
A concrete wall rail comprising the steel formwork panel or a concrete body formed on the back side of the steel formwork panel wall. A floor slab placed on the main girder extended in the direction of the bridge axis,
A floor slab characterized in that a concrete wall rail according to claim 7 is installed at a side end in a direction perpendicular to the bridge axis.