JP4766790B2 - Insulation structure of steel beam - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a heat-insulated beam structure in a steel frame house.To makeIt is related.
[0002]
[Prior art]
  In a recent house, the frame is made of steel, and a plurality of lightweight cellular concrete plates (ALC panels) are arranged in parallel to the steel frame to form an outer wall, and a heat insulating material is arranged on the inner surface of the ALC panel to form a heat insulating structure. Some roofs also have a heat insulating structure with a heat insulating material.
[0003]
  The so-called H-shaped steel provided with flanges at both ends of the web is mechanically rational and widely used for the beams constituting the steel frame. In particular, the beam arranged along the outer wall corresponds to the connection portion between the outer wall, the roof, and the ceiling, and careful heat insulation construction is required. For this reason, it is common to form a heat insulating layer by spraying a plastic heat insulating material such as urethane foam on the flange and web of the beam from the indoor side.
[0004]
  In addition, many proposals have been made as a heat insulation structure of the outer wall in a house. Generally, wood is attached to the inner surface of the ALC panel, and the space formed between the wood is filled with a heat insulating material. After constructing a moisture-proof and air-tight film on the indoor side of the heat insulating material, it is configured by attaching inner wall materials such as gypsum board and cloth.
[0005]
[Problems to be solved by the invention]
  As mentioned above, when heat insulation construction is performed by spraying plastic insulation on the beam, there is a problem that the quality and performance depend on the skill of the person in charge of construction in the field, and it takes time to separate when dismantling the house There is also a problem.
[0006]
  In addition, it is necessary to connect the heat insulation line and the airtight line on the ceiling to the heat insulation line and the airtight line on the outer wall of the beam arranged on the outer periphery of the top floor, but the lower flange of the beam gets in the way and becomes a complicated shape. There is a problem that high reliability cannot be exhibited.
[0007]
  Moreover, in the heat insulation structure of an outer wall part, since the continuity of a heat insulating material is interrupted | blocked by wood, and the heat insulation performance of wood is inferior to the heat insulation performance of a heat insulating material, there exists a problem that heat insulation performance becomes discontinuous. Furthermore, when the floor has a special heat insulating structure, the conventional heat insulating material is extremely elastic. Therefore, to insulate the floor surface with this heat insulating material, the floor must have sufficient strength. In order to disperse the load, it is necessary to construct a floor surface on which face materials are laminated in order to disperse the load, and there is a problem that the operation becomes complicated.
[0008]
  The object of the present invention is to provide a reasonably insulated steel frameInsulation of beamsProvide structureOfferThere is to be.
[0009]
[Means for Solving the Problems]
  In order to solve the above problems, the steel frame according to the present inventionInsulation of beamsThe structure is a steel beam consisting of a web and flanges above and below the web.Thermal insulation structureA groove having a width corresponding to the thickness of the flange of the steel beam,A web-facing piece that opposes the steel beam web is formed on one side of the groove and a covering piece that covers the outer surface of the steel beam flange is formed on the other side of the groove.And with heat insulation and elasticityElastic bodyPreparationThe elastic body is attached to the flange of the steel beam via a groove provided in the elastic body so that the outer surface of the flange is covered with a covering piece.In addition to being installed, a heat insulating plate made of a hard foam extending in a state facing the outer surface of the flange was pressed against the covering piece.Is.
[0010]
  Above steelInsulation of beamsIn the structure, the flange of the steel beam is fitted into a groove or notch provided in the elastic body, so that the flange can be sandwiched between the web facing piece and the covering piece, whereby the outer surface of the flange is covered by the covering piece. Can be covered. For this reason, the heat insulation line of an outer wall and the heat insulation line of a ceiling can be connected via the said elastic body, and both airtight lines can be connected by carrying out an airtight process of a connection part.
[0011]
  Also the above steel frameInsulation of beamsConstructionIn,It is preferable that a heat insulating plate made of a hard foam fitted between the elastic member web facing piece and the flange of the steel beam is pressed.
[0012]
  Also, aboveIn the heat insulating structure of a steel beam, heat insulation made of a hard foam erected over the steel beam and the steel beam adjacent to the steel beam is provided on the upper part of the web-facing piece of the elastic body. It is preferable that the plate is placed.
[0013]
  Above steelInsulation structure of beamThen, it is possible to connect a heat insulating plate made of hard foam disposed on the inner surface of the outer wall and a heat insulating plate made of hard foam disposed on the ceiling via an elastic body attached to the flange of the steel beam. In particular, since the heat insulating plate disposed on the outer wall has a high compressive strength corresponding to the hard foam, the length of the heat insulating plate is made to correspond to one layer, the lower end is brought into contact with the floor surface, and the upper end is an elastic body. By pushing in, the heat insulating plate can be brought into pressure contact with the elastic body and connected. Moreover, the heat insulating plate can be connected to the elastic body by placing the heat insulating plate made of the hard foam disposed on the ceiling surface on the elastic body attached to the flange of the steel beam.
[0014]
  As described above, the heat insulating plate arranged on the outer wall and the heat insulating plate arranged on the ceiling can be connected via the elastic body attached to the steel beam, and the heat insulating plates arranged on the ceiling are connected to the beam. It can be connected via the attached elastic body. Furthermore, by arranging a heat insulating plate made of hard foam on the floor surface, it is possible to insulate the steel frame house with a heat insulating plate made of hard foam, preventing heat exchange with the outside air and keeping indoor temperature. It can be adjusted preferably.
[0015]
  Steel frame according to the present inventionInsulation structure of beamIn this case, a heat insulating plate arranged on the outer wall surface is connected to a steel beam arranged along the outer wall of the building. For this reason, it is essential to attach an elastic body to the lower flange of the steel beam arranged along the outer wall, but an elastic body is not necessarily attached to the lower flange of the steel beam other than the steel beam arranged along the outer wall. There is no need to install it. That is, a heat insulating plate may be connected to a steel beam that does not extend along the outer wall without attaching elasticity to the steel beam.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
  The aboveSteel frameBeamHeat insulationA preferred embodiment of the structure will be described. Steel frame according to the present inventionInsulation of beamsThe structure is such that an elastic body is attached to a lower flange of a steel beam made of H-shaped steel, which is formed by providing a web and flanges on the upper and lower sides of the web, respectively, so that the outer surface of the lower flange (in the steel beam) The lower flange) and the web side surface of the lower flange, and through this elastic body, the heat insulation line of the outer wall, the air tight line, the heat insulation line of the outer wall, and the heat insulation of the air tight line and the ceiling Lines and airtight lines can be connected.
[0017]
  Therefore, when the steel beam is disposed at the outer peripheral part of the building and at the intermediate part between the first floor and the second floor, it is provided along the outer wall on the covering piece covering the outer surface of the lower flange of the elastic body attached to the lower flange. It is possible to connect the heat insulation line of the outer wall to the steel beam by connecting the heat insulation plate made of hard foam, and to connect the airtight line of the outer wall to the steel beam by pressing the cover of the elastic body against the heat insulation plate It is.
[0018]
  Also, when the steel beam is placed on the top floor of the building, by placing a heat insulating plate made of hard foam placed on the ceiling on the web facing piece facing the elastic web attached to the lower flange, It is possible to form a heat insulating line for the ceiling by the heat insulating plate and connect the heat insulating line via an elastic body. When the steel beam is placed on the outer periphery of the building, it is possible to connect the heat insulation line on the outer wall and the heat insulation line on the ceiling by connecting a heat insulation plate placed along the outer wall to the cover of the elastic body It is.
[0019]
  In particular, since the heat insulating plate that forms the heat insulating line of the ceiling is only placed on the web facing piece of the elastic body attached to the lower flange of the steel beam, when it is difficult to guarantee the airtight performance, An airtight line can be connected by applying an airtight tape to the joint between the heat insulating plate and the elastic body.
[0020]
  As an elastic body, it is essential to have moderate elasticity, but it is preferable to have heat insulation. Thus, as a material having appropriate elasticity and heat insulation, there is a polyethylene (PE) -based foam. In these foams, moderate elasticity can be exhibited by appropriately selecting the expansion ratio and adjusting the density.
[0021]
  The elastic body includes a groove for fitting the flange of the steel beam, a web facing piece formed on one side of the groove, a covering piece for covering the outer surface of the flange formed on the other side of the groove, and a web facing piece. A cross section having a connecting piece for connecting the pieces is formed in a substantially C shape. The thicknesses of the web facing piece, the covering piece, and the connecting piece are not particularly limited, and may be any thickness that can function as a heat insulating material for insulating the steel beam. Moreover, the length has a dimension set in advance, whereby the whole is formed in a rod shape. Note that the shape of the elastic body does not necessarily have to be formed by means such as integral molding, and may be finally formed into the shape using adhesion or other means.
[0022]
  The groove formed in the elastic body should have a size and shape that can hold the flange in a stable state when the flange of the steel beam is fitted to hold the flange. It ’s fine. That is, as the groove, a parallel groove, a groove having a small size on the opening side, or a groove having a large size on the opening side may be formed.
[0023]
  In particular, as will be described later, a heat insulating plate made of a hard foam disposed on the outer wall is pressed against the cover piece, and a heat insulation made of a hard foam fitted between the upper flange of the steel beam is attached to the web facing piece. A heat insulating plate made of a hard foam placed on the ceiling or placed on the ceiling is placed. As described above, since the force from the heat insulating plate is applied to the elastic body, it is possible to maintain the attachment state of the steel beam to the flange without particularly limiting the size and shape of the groove.
[0024]
  However, at the construction stage of the steel frame housing, it is preferable that the mounting state can be maintained when the elastic body is mounted on the flange of the steel beam. Therefore, when the elasticity of the elastic body is large, the groove may be a mere cut, When the elasticity is small, the groove is preferably formed with a size having a tight fitting tolerance with respect to the thickness of the lower flange.
[0025]
  The web facing piece formed on one side of the groove of the elastic body is formed so as to cover the web side surface of the flange so as to face the web of the steel beam. Further, the cover piece formed on the other side of the groove may be dimensioned so as to cover the flange outer surface of the steel beam over the front surface, or may be dimensioned so as to cover substantially half of the flange outer surface.
[0026]
  When the elastic covering piece is sized to cover the front surface of the outer surface of the flange, it is possible to cover the outer surface of the lower flange over the front surface with one elastic body by fitting the lower flange of the steel beam into the groove. . In such an elastic body, when the steel beam is arranged along the outer periphery of the building, it is possible to cover the outer surface of the flange by attaching it to the flange arranged toward the indoor side.
[0027]
  If the elastic cover is of a size that can cover approximately half of the flange, attach the two elastic bodies from both sides of the web to the lower flange of the steel beam placed on the ceiling at a location other than the outer periphery of the building. Thus, the outer surface of the flange can be covered. In such an elastic body, since the web facing pieces are arranged on both surfaces of the lower flange on the web side, it is possible to function as a support piece when installing a heat insulating plate corresponding to the ceiling surface, which is advantageous.
[0028]
  A preferred embodiment of the elastic body will be described with reference to FIG. The elastic body A shown in FIG. 1 (a) and the elastic body B shown in FIG. 1 (b) are made of PE foam having appropriate elasticity and heat insulation properties. Are formed in a C-shaped section having a web facing piece 2 formed on the other side, cover pieces 3 and 4 and a connecting piece 5 formed on the other side of the groove 1. The cover piece 3 of the elastic body A is formed so as to be able to cover the outer surface of the lower flange of the steel beam over the front surface, and the cover piece 4 of the elastic body B is formed so as to be able to cover substantially half of the lower flange. Has been.
[0029]
  When the elastic body A configured as described above is attached to the lower flange of the steel beam, the entire outer surface of the lower flange of the steel beam can be covered by the covering piece 3, and the elastic body B can be covered with the lower flange of the steel beam. When attached to, the outer surface of the lower flange of the steel beam can be covered by the covering piece 4 approximately half.
[0030]
  Therefore, as shown in FIG. 2, it is possible to cover the entire lower outer surface of the lower flange 10a by attaching the elastic body A to the lower flange 10a of the steel beam 10 arranged along the outer periphery of the building. In particular, it is advantageous because the work on the steel beam 10 arranged along the outer periphery of the building can be performed only from the indoor side.
[0031]
  Further, the elastic body B is attached to the lower flange 11a of the beam 11 which is arranged on the top floor of the building and supports the roof panel 6 which constitutes the roof, from both sides of the web 11b. It is possible to cover the entire surface of the lower outer surface and the surface on the web 11b side with the web facing piece 2. Thus, since the web facing piece 2 of the elastic body B is disposed on the surface of the lower flange 11a on the web 11b side, it becomes possible to place and support a heat insulating plate to be described later.
[0032]
  As will be described later, a heat insulating plate made of a hard foam is fitted into the cover piece 3 of the elastic body A from below. For this reason, it is preferable to provide a groove for receiving the heat insulating plate in the lower surface of the covering piece 3 in a predetermined manner. It is also advantageous to provide a protruding portion for maintaining the distance from the outer wall panel of the heat insulating plate at the free end of the covering piece 3. Furthermore, a heat insulating plate made of a hard foam disposed on the ceiling is placed on the upper surface of the web facing piece 2 of the elastic bodies A and B. For this reason, it is preferable to form a groove for receiving the heat insulating plate also on the upper surface of the web facing piece 2.
[0033]
  The material for the roof panel 6 is not particularly limited, and a panel such as a precast concrete (PC) panel or a lightweight cellular concrete (ALC) panel can be selectively used. In the present embodiment, the roof panel 6, an outer wall panel 7 and a floor panel 8, which will be described later, are each constituted by an ALC panel.
[0034]
  By attaching the elastic body A to the steel beam 10 arranged along the outer periphery of the building as described above and the lower flanges 10a, 11a of the steel beam 11 arranged at other positions, the steel beams 10, It is possible to cover the lower surface of 11 (the surface facing the indoor side or the ceiling side) and thereby insulate.
[0035]
  Next, the steel frame according to the present inventionApplied thermal insulation structure of beamHousing preferredExampleWill be described.Main ironThe bone house has the beam structure described above, and heat insulating plates made of hard foam are arranged on the inner surface and the ceiling surface of the outer wall, respectively, and these heat insulating plates are connected to an elastic body attached to the steel beam. By connecting the heat insulation line of the outer wall and the heat insulation line of the ceiling through the elastic body, and further, by placing a heat insulation plate made of hard foam on the floor surface, heat insulation of almost the entire surface of the house excluding the opening is realized It is a thing.
[0036]
  Examples of the hard foam constituting the heat insulating plate include a phenol resin foam and a polystyrene (PS) foam. The phenol resin foam has high compressive strength and bending rigidity, and can be applied to any part of the outer wall surface, the ceiling surface, and the floor surface. Although PS foam has high compressive strength, it has low bending rigidity and is applied to the outer wall where the load is always applied by pressing against the steel beam and the ceiling surface that needs to maintain long-term performance in the state of supporting both ends. Can be applied to the floor.
[0037]
  As a phenol resin foam that can be preferably applied to the heat insulating plate as described above, there is a technology (Neoma Foam (registered trademark)) developed by the applicant of the present application and already applied for international application (Japanese Patent Application No. 2000-558158). Then, it can be preferably used as a heat insulating plate.
[0038]
  The phenol resin foam according to the above technology has a density of 10 kg / m having a phenol resin base portion and a bubble portion formed from a large number of fine bubbles.^Three~ 100kg / m^ThreeThe above-mentioned fine foam contains hydrocarbon and has an average foam diameter in the range of 5 μm to 200 μm, and the foam wall of most of the fine foam is constituted by a smooth phenol resin substrate surface. And despite the fact that the blowing agent is a hydrocarbon, it has a thermal conductivity comparable to that of conventional chlorofluorocarbon-based blowing agents, and there is no change over time in the thermal conductivity, resulting in a mechanical strength such as compressive strength. Excellent and improved brittleness.
[0039]
  In the present invention, the heat insulating plate provided on the indoor side of the ALC panel with an air layer separated is made of a phenol resin foam, has high heat insulating properties, and can maintain heat insulating properties and dimensions for a long period of time. have. The heat insulating property in the phenol resin foam can be ensured by keeping the bubble diameter as small as 5 μm to 200 μm, preferably as small as 10 μm to 150 μm and keeping the closed cell ratio as high as 80% or more. In addition, the phenol resin foam has high combustion resistance, and when the flame acts, the surface is carbonized and does not ignite.
[0040]
  For example, the density of the phenol resin foam is 27 kg / m^ThreeIs set, the thermal conductivity at 20 ° C. is 0.020 W / m · K, and the compressive strength is 15 N / cm.²The heat distortion temperature is 200 ° C. As for the performance of the phenolic resin foam, three types of extruded foamed polystyrene have thermal conductivity: 0.028 W / m · K, compressive strength: 20 N / cm², Heat deformation temperature: 80 ° C. and two types of rigid urethane foam have thermal conductivity: 0.024 W / m · K, compressive strength: 8 N / cm², Heat distortion temperature; sufficiently high performance compared with 100 ° C.
[0041]
  For this reason, a heat insulating plate made of a phenol resin foam can exhibit substantially the same heat insulating performance with a thickness of about 2/3 that of conventional extruded polystyrene or rigid urethane foam.
[0042]
  A protective layer is provided on the front and back surfaces of the phenol resin foam. Although it does not specifically limit as a material which comprises this protective layer, For example, it is possible to use a polyester nonwoven fabric.
[0043]
  The thickness of the heat insulating plate is set at the manufacturing stage, and the width and length are cut to desired values. That is, the thickness of the heat insulating plate is set in accordance with the portion to be applied, and the width is set corresponding to the module size set in the house to be applied. Similarly, the length of the heat insulating plate can be set according to the module size and the height of one layer according to the part to be applied.
[0044]
  Therefore, when the length of the heat insulating plate applied to the outer wall is cut corresponding to the height of one layer, it is possible to easily perform the work for attaching to the panel constituting the outer wall, and to the panel It is possible to reduce the number of support sites. Furthermore, since the number of connecting portions of the heat insulating plate is reduced, it is possible to easily keep the airtightness.
[0045]
  In particular, since the phenol resin foam has a relatively high compressive strength, the shape as a heat insulating plate can be sufficiently maintained even when the phenol resin foam is attached at a height of one layer, and The non-woven fabric that is arranged on the back surface and integrated with the foam functions as a resistance member against bending, shearing, or tension, and it is possible to configure a thermally and highly reliable heat insulating structure.
[0046]
  And the upper end of the heat insulation plate cut according to the height of one layer is pressed against the cover of the elastic body that is attached to the lower flange of the steel beam in advance. It is possible to ensure heat insulation and to keep it continuous. That is, it is possible to connect the heat insulation line of the outer wall to the heat insulation line of the ceiling via an elastic body, and to ensure a highly reliable airtight line formed between the outer wall and the steel beam. Is possible.
[0047]
  Next, the structure in which the heat insulating plate is arranged on the outer wall surface, ceiling surface, and floor surface will be described individually. First, the heat insulation structure of the outer wall will be described with reference to FIGS. FIG. 2 is a view for explaining a steel frame house in which a heat insulating plate made of a phenol resin foam is arranged on an outer wall surface, a ceiling surface, and a floor surface. FIG. 3 is a plan view showing the heat insulating structure of the outer wall portion.
[0048]
  In a house having a steel frame, it is common to configure the outer wall by attaching the outer wall panel 7 composed of a plurality of ALC panels to the steel beam 10 constituting the frame in parallel. The outer wall panel 7 is attached to a steel beam 10 disposed on the outer periphery of the building via a mounting bracket (not shown). Various structures for attaching the outer wall panel 7 to the steel beam 10 have been proposed, and these known techniques can be appropriately selected and used.
[0049]
  In the steel frame housing according to the present embodiment, the spacer 14 is disposed on the indoor side of the outer wall panel 7 and the heat insulating plate 15 made of a phenol resin foam is attached to the spacer 14, so that the space between the outer wall panel 7 and the heat insulating plate 15 is increased. Thus, the air layer 16 is secured, and thereby the outer wall panel 7 is configured to secure a space for repeated moisture absorption and moisture release so as to exhibit preferable heat insulation performance.
[0050]
  After a plurality of outer wall panels 7 are attached to the steel beam 10 to form the outer wall, prior to the heat insulation construction on the indoor side of the outer wall panel 7, at least the steel beam 10 disposed along the outer periphery of the building The elastic body A is attached to the flange 10a, and the lower outer surface of the lower flange 10a is covered with the covering piece 3 over the entire surface.
[0051]
  As the spacer 14, it is possible to secure an air layer 16 having a thickness capable of breathing the ALC panel 13, that is, absorbing the moisture by the ALC panel 13 or releasing the absorbed moisture. It ’s fine. The thickness of the air layer is preferably about 7 mm or more. For this reason, the spacer 14 having a thickness of about 7 mm is used.
[0052]
  The spacer 14 is interposed between the two when the heat insulating plate 15 is attached to the ALC panel 13, and the screw 17 is penetrated. For this reason, it is not preferable that the spacer 14 is compressed and its thickness is changed when the heat insulating plate 15 is attached to the ALC panel 13, and it is necessary to have an appropriate compressive strength. As the spacer 14 having such strength, it is preferable to use a phenol resin foam having the same density as the heat insulating plate 15.
[0053]
  Generally, a foam of a phenol resin has a relatively large spherical or irregular void (void) inside, and this void causes a reduction in compressive strength. For this reason, conventionally, thin plates are easily affected by voids and difficult to handle in construction. However, the above-mentioned neoma foam has a feature that the total area of voids is 5% or less of the total area, and the variation in compressive strength is small. For this reason, even a thin plate having a thickness of 10 mm or less is easy to handle, and can be applied to a thin plate having the function as the spacer 14 and requiring an appropriate compressive strength. .
[0054]
  The spacer 14 is disposed corresponding to the joint of the heat insulating plate 15. By arranging the spacers 14 corresponding to the joints of the heat insulating plates 15 in this way, it is possible to substantially cover the joints of the heat insulating plates 15 with the spacers 14 made of the same material, and it is possible to compensate for the lack of heat insulation. In addition, it is possible to ensure airtightness by the elasticity of the phenol resin foam.
[0055]
  The width of the spacer 14 having the above-described functions is provided on both sides of the joint so as to ensure airtightness at the joint of the heat insulating plate 15 and to easily fix the heat insulating plate 15 to the ALC panel 13 with screws 17. It is preferable that the dimension is such that a sufficient contact area can be secured with respect to an end portion of a certain heat insulating plate 15.
[0056]
  The shape of the spacer 14 is not necessarily a flat plate, and the cross section may be formed in a convex shape. Then, by inserting and fixing the convex portion at the joint of the heat insulating plate 15, it is possible to ensure airtightness without causing a loss of heat insulation at the joint. Further, in order to ensure airtightness at the joint of the heat insulating plate 15, a member similar to the spacer 14 may be attached to the indoor side surface of the joint, and in this case, the member is formed in a flat plate or convex shape. You can be ah.
[0057]
  The heat insulating plate 15 has a width dimension corresponding to the module dimension set for the target house, and is attached to the lower flange 10a of the steel beam 10 from the surface of the floor panel 8 by a height of one layer, that is, from the surface of the floor panel 8. The elastic body A has a dimension approximately equal to the distance to the covering piece 3.
[0058]
  Therefore, when the elastic body 15 is attached to the outer wall panel 7 via the spacer 14, when the lower end of the elastic body 15 is brought into contact with the floor panel 8 and fitted between the floor panel 8 and the steel beam 10, the upper end Is pressed against the covering piece 3 of the elastic body A attached to the lower flange 10a of the steel beam 10, thereby ensuring airtightness between the air layer 16 formed along the outer wall panel 7 and the steel beam 10. Is possible.
[0059]
  The thickness of the heat insulating plate 15 is appropriately selected depending on the construction site of the house, and is not uniquely set. In this embodiment, a phenol resin foam having a thickness of 25 mm is used as the heat insulating plate 15.
[0060]
  When the heat insulating plate 15 and the spacer 14 are fixed to the outer wall panel 7 with the screws 17, the mounting bracket 19 for attaching the base 18 of the indoor wall is simultaneously fixed. However, it is not limited whether the fixing of the heat insulating plate 15 and the mounting bracket 19 is performed with one screw 17 or another means as described above, and the structure for fixing the base 18 of the wall on the indoor side. The most reasonable means should be selected in relation to
[0061]
  The width of the spacer 14 has a sufficient contact area with the ends of the heat insulating plate 15 on both sides of the joint so that airtightness at the seam of the heat insulating plate 15 is secured and fixing with screws 17 can be easily performed. It is secured. Therefore, the joint of the heat insulating plate 15 does not form a thermal bridge with the outer wall panel 7 and airtightness to the air layer 16 can be ensured. For this reason, it becomes possible to prevent the lack of heat insulation.
[0062]
  Generally, the position of the base 18 on the indoor side wall is regulated by the indoor side surface of a pillar (not shown) constituting the housing. On the other hand, as described above, the heat insulating plate 15 made of a phenol resin foam has higher heat insulating performance than the conventional heat insulating material. Therefore, a space 21 is formed between the wall base material 20 such as gypsum board and the heat insulating plate 15 attached to the base 18 of the wall on the indoor side, and the electric wiring and piping on the indoor side using the space 21 Can be performed.
[0063]
  Further, at the portion where the heat insulating plate 15 intersects with the pillar, the heat insulating plate 15 is fixed to the outer wall panel 7 through the spacer 14 with the end face facing the side surface of the pillar, and is formed between the outer wall panel 7 and the pillar. A spacer 14 is inserted into the gap. Therefore, regardless of the presence or absence of pillars, spacers 14 are arranged and fixed at predetermined intervals on the indoor side surface of the outer wall panel 7, and a heat insulating plate 15 lies between the spacers 14 with the air layer 16 therebetween. opposite. Therefore, it is possible to insulate by covering the indoor side surface of the outer wall panel 7 with the spacer 14 and the heat insulating plate 15.
[0064]
  Next, the heat insulation structure of the first floor ceiling space 22 corresponding to the ceiling of the first floor, which is a portion facing the outer wall panel 7 and between the floors, for example, between the first floor and the second floor, will be described.
[0065]
  As shown in FIG. 2, the elastic body A is attached to the lower flange 10a of the steel beam 10 arranged along the outer periphery of the building and correspondingly between the first floor and the second floor. Further, a heat insulating plate 23 is disposed facing the indoor side surface of the web 10b of the steel beam 10, and the steel beam 10 and the first floor ceiling space 22 are thermally insulated by the heat insulating plate 23.
[0066]
  As with the heat insulating plate 15, the heat insulating plate 23 uses a phenol resin foam. The thickness of the heat insulating plate 23 is not particularly limited, but is preferably the same thickness (25 mm) as the heat insulating plate 15 so as not to increase the types of members. The heat insulating plate 23 has a lower end pressed against the web facing piece 2 of the elastic body A attached to the lower flange 10a of the steel beam 10 and an upper end pressed against the surface of the upper flange 10c on the web 10b side. It is fitted between the upper and lower flanges of the beam 10.
[0067]
  A plurality of floor panels 8 constituting the floor of the second floor are laid in parallel on the upper flange 10c of the steel beam 10 disposed between the first floor and the second floor. A gap 24 formed between the outer wall panel 7 is filled with a filler 24 such as mortar. Thus, in the ceiling portion of the first floor, the heat insulating plate 15 provided along the outer wall panel 7 on the first floor, the elastic body A, the heat insulating plate 23, the mortar 24, the heat insulating plate provided along the outer wall panel 7 on the second floor. 15 continuously form a heat insulation line of the outer wall.
[0068]
  As described above, when the heat insulating plate 23 is attached between the upper and lower flanges 10a and 10c of the steel beam 10 arranged between the first floor and the second floor, the lower end of the heat insulating plate 23 is attached to the lower flange 10a of the steel beam 10. Since the elastic body A is pressed against the web facing piece 2, it is possible to maintain a stable mounting state regardless of the shape and size of the groove 1, and it can be easily performed by vibrations acting on the steel beam 10. Will not fall into.
[0069]
  Next, the heat insulating structure of the floor surface will be described with reference to FIGS. 2, 4, and 5. In the figure, the floor panel 8 can selectively use a PC panel or an ALC panel. These floor panels 8 are laid in parallel on the upper part of the foundation 25 and fixed by known means. Further, a gap formed between the end of the floor panel 8 and the outer wall panel 7 at the top end of the foundation 25 is filled with a filler 24 such as mortar, and the top level of the filler 24 and the floor panel are filled. 8 so that the surface level is equal, so that the filler 24 and the floor panel 8 are substantially integrated.
[0070]
  Therefore, when the heat insulation plate 15 is attached to the indoor side of the outer wall panel 7, when the lower end of the heat insulation plate 15 is brought into contact with the floor panel 8, it may actually be brought into contact with the top end of the filler 24.
[0071]
  A heat insulating plate 26 is laid on the entire upper surface of the floor panel 8 arranged on the first floor, and is fixed to the floor panel 8 with screws 27 as shown in FIG. As the heat insulating plate 26 disposed on the floor surface, it is possible to selectively use a material made of a phenol resin foam or a material made of a PS foam in the same manner as the heat insulating plate 15 used for the outer wall. That is, since the heat insulating plate 26 is laid on the upper surface of the floor panel 8, the structure is not always applied with a load, and the floor finish 28 is applied to the surface. Is distributed. For this reason, even the heat insulating plate 26 made of PS foam can be used without causing a problem in strength.
[0072]
  In this embodiment, the heat insulating plate 26 is made of a phenol resin foam. The thickness of the heat insulating plate 26 is not particularly limited, and can be set as appropriate according to the weather conditions, the location conditions, etc. in the construction site of the house. In this embodiment, the heat insulating plate 26 disposed on the upper surface of the floor panel 8 is constituted by a phenol resin foam having a thickness of 12 mm. In the phenolic resin foam having this thickness, the density may be increased so that a sufficient compressive strength can be exhibited with respect to the loading load set on the floor surface.
[0073]
  The screw 27 is advantageously used when a plastic foam is used as a heat insulating plate, and exerts an excessive compressive force on the heat insulating plate even when the applied torque is excessive. It is configured so that there is nothing. That is, the screw 27 includes a screw portion 27a, a head portion 27b, and a cylindrical portion 27c formed between the screw portion 27a and the head portion 27b and having a diameter larger than the thickness of the screw portion 27a. The length including the head portion 27b and the cylindrical portion 27c is formed to be equal to the thickness of the heat insulating plate 26. Then, the screw portion 27a passes through the heat insulating plate 26 from the upper surface of the heat insulating plate 26 laid on the upper surface of the floor panel 8 and is screwed to the floor panel 8, and the cylindrical portion 27c attaches the heat insulating plate 26 accordingly. It penetrates and the front-end | tip part contacts the surface of the floor panel 8, and stops. Therefore, a large compressive force does not act on the heat insulating plate 26 from the head 27b, and the heat insulating plate 26 is not crushed or broken more than necessary.
[0074]
  The heat insulating plate 26 arranged on the floor panel 8 on the first floor is laid in contact with the heat insulating plate 15 for the outer wall attached to the indoor side of the outer wall panel 7. 8 is fixed. Therefore, the heat insulating plate 15 disposed corresponding to the outer wall and the heat insulating plate 26 disposed corresponding to the floor surface of the first floor are connected to each other at the end. With this configuration, the heat insulating line and floor of the outer wall of the house are connected. Surface insulation line is connected.
[0075]
  In the present invention, it is essential that a heat insulating plate 26 made of phenol resin foam is laid on the floor panel 8 on the first floor to form a heat insulating line. There is no need to place a board.
[0076]
  A floor finishing material 28 is applied to the upper surface of the heat insulating plate 26 formed on the floor surface. In this way, by installing the floor finishing material 28 on the upper surface of the heat insulating plate 26, even if the weight of the object placed on the upper part or the weight of the resident acts, these weights are It is dispersed by the finishing material 28 and does not act as a concentrated load on a part of the heat insulating plate 26.
[0077]
  Next, the heat insulation structure of the ceiling surface of the top floor will be described with reference to FIG. A steel beam 10 is disposed along the outer wall of the building on the ceiling portion of the top floor, and a steel beam 11 is disposed at a portion other than the outer wall. Elastic bodies A and B are attached to the lower flanges 10a and 11a of the steel beams 10 and 11, respectively, and the lower outer surfaces of the lower flanges 10a and 11a are covered with the covering pieces 3 and 4, respectively, 2 covers the web side surfaces of the lower flanges 10a and 11a.
[0078]
  As described above, in the steel beam 10 disposed along the outer wall, it is essential to selectively attach the elastic body A or the elastic body B to the lower flange 10a, but the steel beam 10 is disposed at a portion other than the outer wall. The steel beam 11 may be attached with the elastic body B, or may be attached with a member having heat insulation properties without having elasticity.
[0079]
  A roof panel 6 made of a PC panel or an ALC panel is placed on the upper flanges 10c and 11c of the steel beams 10 and 11 and fixed by predetermined means to constitute a roof.
[0080]
  Since the roof surface is strongly affected by solar radiation, heat transfer is severe. For this reason, the heat insulation board arrange | positioned facing the roof panel 6 is set more thickly compared with the heat insulation board of another site | part (an outer wall, a floor surface). However, when the thickness of the heat insulating plate becomes too thick, there is a possibility that problems such as an increase in manufacturing cost and an increase in processing cost due to difficulty in operations such as cutting. For this reason, it is also possible to suppress an increase in cost by combining multiple types of heat insulating plates without necessarily exhibiting the heat insulating function with a single heat insulating plate.
[0081]
  In this embodiment, a heat insulating plate 30 made of a phenol resin foam is placed on the web facing piece 2 of the elastic bodies A and B attached to the lower flanges 10a and 11a of the steel beams 10 and 11, respectively. A heat insulating material 31 such as glass wool conventionally used is disposed on the upper surface of the plate 30 so as to face the roof panel 6. Thus, even in the harsh use state where the heat insulating plate 30 is simply supported by placing both ends on the web facing piece 2 and the heat insulating material 31 is placed on the upper part, the high level of the phenol resin foam is high. It can sufficiently withstand due to its strength and rigidity.
[0082]
  The heat insulating plate 30 is set to about 40 mm thicker than the thickness of the heat insulating plate 15 disposed to face the outer wall panel 7. The phenolic resin foam with such thickness is the maximum thickness that can be cut by hand using a cutter, and when it becomes thicker than this, it is necessary to process it on the spot. However, it may be difficult to process easily. Therefore, the heat insulating plate 30 has the thickness, and the heat insulating material 31 such as glass wool is disposed on the upper surface of the heat insulating plate 30.
[0083]
  By arranging the heat insulating plate 30 and the heat insulating material 31 on the basis of the lower flanges 10a and 11a of the steel beams 10 and 11, a space 32 is formed between the roof panel 6 and the moisture of the roof panel 6 by this space 32. Absorption and release of moisture.
[0084]
  In particular, the heat insulating plate 30 that insulates the heat from the roof is placed on the web facing pieces of the elastic bodies A and B attached to the lower flanges 10a and 11a of the steel beams 10 and 11, thereby providing an elastic body. The heat insulating plate 15 attached to the outer wall panel 7 through A is connected to the heat insulating plate 30 disposed on the ceiling surface, whereby the heat insulating line on the outer wall and the heat insulating line on the ceiling surface are connected.
[0085]
  Further, the heat insulating plate 15 constituting the heat insulating structure of the outer wall is pressed against the covering piece 3 of the elastic body A to ensure airtightness, and the heat insulating plate 30 has its own weight and heat insulating material 31 on the web facing piece 2 of the elastic bodies A and B. It is possible to ensure the airtightness of the ceiling surface by applying and applying a load of. However, when it is considered that it is unstable to apply the own weight of the heat insulating plate 30 and the heat insulating material 31 to the web facing pieces 3 of the elastic bodies A and B to ensure airtightness, the lower surface of the heat insulating plate 30 and the elastic body By sticking the airtight tape 33 over the connection pieces 5 of A and B, it is possible to perform the airtight treatment more reliably.
[0086]
  As described above, the heat insulating structure of the outer wall includes the heat insulating plate 15 attached to the outer wall panel 7 through the spacer 14, the heat insulating plate 23 provided facing the web 10b of the steel beam 10 between the layers, and the heat insulating material. By connecting the elastic bodies A arranged between the plates 15 and 23 in pressure contact with each other, it is possible to form a consistent heat insulation line from the first floor to the top floor. Further, since the upper end portion of the heat insulating plate 15 is in pressure contact with the elastic body A attached to the lower flange 10a of the steel beam 10, the lower end is pressed into contact with the floor panel 8, and airtightness can be secured at the upper and lower ends of the heat insulating plate 15. Is possible.
[0087]
  Further, the heat insulating structure of the floor surface can be constituted by a heat insulating plate 26 which is laid on the upper surface of the floor panel 8 and fixed to the floor panel 8 with screws 27, and the end of the heat insulating plate 26 is insulated from the outer wall. It is possible to connect the heat insulation line on the outer wall and the heat insulation line on the floor surface by contacting the indoor surface of the plate 15. Further, since the heat insulating plate 26 abuts against the indoor side surface of the lower end portion of the heat insulating plate 15 of the outer wall that is airtight, it is possible to exhibit airtightness without using a special airtight structure.
[0088]
  Further, the heat insulation structure of the ceiling surface is such that the heat insulating plate 30 and the heat insulating plate 30 placed on the web facing piece 2 of the elastic bodies A and B attached to the lower flanges 10a and 11a of the steel beams 10 and 11 arranged on the top floor. And the heat insulating plate 30 is connected to the heat insulating plate 15 constituting the heat insulating structure of the outer wall through the elastic body A, so that the heat insulating line on the ceiling surface It is possible to connect the heat insulation line of the outer wall. Further, the heat insulating plate 30 is placed on the web facing piece 2 of the elastic bodies A and B attached to the lower flanges 10a and 11a of the steel beams 10 and 11, and the lower surface of the heat insulating plate 30 and the connecting piece 5 of the elastic bodies A and B are provided. By adhering the airtight tape 33, sufficient airtightness can be ensured.
[0089]
  In FIG. 2, reference numeral 35 denotes a finishing material for the ceiling of each floor.
[0090]
【The invention's effect】
  As explained in detail above, in the beam structure of a steel house according to the present invention, the groove provided in the elastic body is fitted into the flange provided at the top and bottom of the web so that it can be sandwiched between the web facing piece and the covering piece. This allows the outer surface of the flange to be covered by the covering piece. For this reason, the heat insulation line of an outer wall and the heat insulation line of a ceiling can be connected via an elastic body. Further, the outer wall heat-insulating plate can be pressed against the elastic body to ensure the air-tightness of the outer wall, and the ceiling heat-insulating plate and the elastic body can be treated with an air-tight tape to connect the two air-tight lines.
[0091]
  As described above, since the elastic body is attached to the steel beam and the heat insulating line on the outer wall and the heat insulating line on the ceiling are connected, the end of the heat insulating plate on the outer wall can be brought into pressure contact with the elastic body. For this reason, even if the accuracy of the length dimension of the heat insulating plate is somewhat rough, it can be handled, and airtightness can be ensured by pressing the heat insulating plate against the elastic body. For this reason, the process by the airtight tape which was required in the past can be omitted, and the construction labor can be reduced. Moreover, when the process by an airtight tape is given, the stable performance can be exhibited for a long period of time.
[0092]
  Further, in the steel frame housing according to the present invention, a heat insulating plate made of a hard foam attached to the inner surface of the outer wall and the ceiling surface can be connected via the beam structure, and a heat insulating plate made of a hard foam is further attached to the floor surface. By arranging and insulating, heat exchange with the outside air can be prevented and the indoor temperature can be preferably adjusted.
[0093]
  Moreover, by using a heat insulating plate having a length corresponding to the height of one layer as the heat insulating plate of the outer wall, it is possible to reduce the number of joints, thereby reducing thermal bridges and reducing heat loss. I can do it. Further, the seam can be reinforced by the spacer provided at the seam.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating the shape of an elastic body.
FIG. 2 is a diagram illustrating a house in which a heat insulating plate made of a phenol resin foam is disposed on an outer wall surface, a ceiling surface, and a floor surface.
FIG. 3 is a plan view showing a heat insulating structure of an outer wall portion.
FIG. 4 is a diagram illustrating a heat insulating structure of a floor surface.
FIG. 5 is a diagram illustrating a state in which the heat insulating plate is fixed to the floor panel with screws.
[Explanation of symbols]
  A, B Elastic body
  1 groove
  2 Web facing piece
  3,4 Cover
  5 connection pieces
  6 Roof panel
  7 Exterior wall panels
  8 Floor panels
  10, 11 Steel beam
  10a, 11a Lower flange
  10b, 11b web
  10c, 11c Upper flange
  14 Spacer
  15, 23, 26, 30 Insulation plate
  16 Air layer
  17 screw
  18 Indoor wall base
  19 Mounting bracket
  20 Wall substrate
  21 space
  22 1st floor ceiling space
  24 Filler, mortar
  25 Basics
  27 screws
  28 Floor finish
  31 Insulation
  32 spaces
  33 Airtight tape
  35 Ceiling finishing materials

Claims (3)

It is a heat insulating structure of a steel beam consisting of a web and flanges provided above and below the web,
A groove having a width corresponding to the thickness of the flange of the steel beam, the flanges of the outer surface of the steel beam on the other side of the groove with one side of the groove to form a web facing plate opposed to the web of the steel beam A cover piece is formed , and an elastic body having heat insulating properties and elasticity is provided ;
A rigid foam that is attached to a flange of a steel beam through a groove provided in the elastic body and is installed so as to cover the outer surface of the flange with a cover piece , and extends in a state of facing the outer surface of the flange A heat insulating structure for a steel beam, characterized in that a heat insulating plate made of is pressed against the covering piece . A heat insulating plate made of a hard foam inserted between the elastic member and the flange of the steel beam was pressed against the web facing piece.
The heat insulating structure for a steel beam according to claim 1 . On the upper part of the web-facing piece of the elastic body, a heat insulating plate made of a hard foam is placed over the steel beam and a steel beam provided adjacent to the steel beam.
The heat insulating structure for a steel beam according to claim 1 .

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