JP2007162252A - Heat insulating construction method for exterior wall and roof of steel-frame building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rational heat insulating construction method which enables the construction of the exterior wall and roof of a steel-frame building, which makes a superior heat insulating function realized in the building composed of a steel structure, which provides the steel-frame building with strength and a sense of massiveness, by no means inferior to a reinforced concrete building, and which reduces construction costs by a simple structure. <P>SOLUTION: In the steel-frame building, a pair of form walls is molded by sequentially stacking a plurality of form strips; a floor board connecting part, which enables the connection of the floor board by inserting an anchor reinforcement Q though a through-hole of a perforated plate body arranged in a part of the inside form wall, is formed; a holding bracket is fixed to the inside form wall, and fixed to a close steel beam; after that, concrete is poured into an internal space made between the form walls; even at the uppermost end of the inside form wall, a roof form plate identical in property with a form unit panel is placed on a binder which is erected at an upper surface section; the concrete is poured onto the roof form plate; and after the hardening of the concrete, the heat insulating roof board as an upper cover is placed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is an improvement of building technology, more specifically, an excellent heat insulating function is realized in a building made of a steel structure, has a strength and a solid feeling comparable to a reinforced concrete building, and is constructed with a simple structure. The present invention relates to a heat insulation construction method for an outer wall / roof in a steel structure that requires less cost.

  As is well known, many of the buildings in recent years are made of reinforced concrete, and have a long life, high fire resistance, wind resistance, sound insulation, and high airtightness.

  By the way, as a heat insulation measure in such a reinforced concrete building, an internal heat insulation method was mainly used, so that dew condensation around the sash and in the wall body was likely to occur. Therefore, recently, a reinforced concrete structure constituted by using a so-called “heat-insulating throwing-out formwork” having a concrete formwork and a heat insulating material has been disclosed (for example, see Patent Document 1). It became possible to prevent the occurrence of condensation.

However, in such a reinforced concrete building, there is a complaint that the construction cost is bulky and the construction period is long. Moreover, although there is an advantage that the service life is long, there is a dissatisfaction that the appraisal value of the building becomes high and tax burden such as property tax becomes large. Furthermore, due to the fact that the pillars are thick due to the structure and project into the room, and the walls are the main structures, there are complaints that the degree of freedom in floor plan is limited and it is difficult to cope with future redesigns. It was.
JP 2001-254465 A (page 5-6, FIG. 1-2)

  The present invention was made in view of the above-mentioned problems in conventional reinforced concrete buildings, and the object thereof is to realize an excellent heat insulating function in a building having a steel structure. To provide a rational thermal insulation method that can build outer walls and roofs in steel structures that have strength and profound feeling comparable to reinforced concrete structures, and that require a simple structure and low construction costs. It is in.

  Means employed by the present inventor for solving the above-described problems will be described with reference to the accompanying drawings.

That is, in the present invention, in constructing the heat insulation structure of the outer wall / roof in the steel structure constructed by combining the steel beams B,
While the Komai muscle A is arranged above the foundation beam P, the long starting bases 2 and 2 are juxtaposed on both sides of the Komai muscle A, and each starting base 2 In the concave groove 21, the mold unit unit panels 1, 1... Made of a heat insulating material are fitted and lined up, and a pair of opposing mold frames 1 a, 1 b are formed in one step,
Both the members are connected and held by laying the squirrel-shaped connecting tools 3, 3,.
Further, guide rails 4 are arranged on the upper ends of these formwork strips 1a and 1b, and the next-stage formwork unit panels 1, 1... Are placed on the guide rails 4 in this way. While forming the pair of formwork walls 1A and 1B by sequentially stacking the turn formwork bands 1a and 1b,
A perforated plate 5 is disposed in a part of the inner mold wall 1A of the mold walls 1A and 1B, and an anchor rebar Q is inserted into a through hole 51 of the perforated plate 5 to attach a floor plate. While forming a floor plate joint that can be joined,
While fixing the holding bracket 6 to the inner mold wall 1A and fixing the holding bracket 6 to the adjacent steel beam B, the concrete is poured into the internal space created between the mold walls 1A and 1B. ,
The perforated plate member 5 is also disposed at the uppermost end of the inner formwork wall 1A to form a roof joint portion, and the formwork unit panel 1 is placed on a small beam installed on the top end portion. Place the same quality roof mold 7 and pour concrete onto the roof mold 7
After this concrete hardened to some extent, a technical means was adopted in which the outer peripheral portion of the steel structure was insulated by placing a heat insulating roof plate 8 serving as an upper lid.

  Further, in order to solve the above-described problems, the present invention may employ technical means for making the starting base 2 a long steel member having a light groove-shaped cross section in addition to the above means as necessary. it can.

  Furthermore, in order to solve the above-described problems, the present invention provides a technical means in which, in addition to the above means, the steel beam B is an H-shaped steel, and the holding bracket 6 is clamped and fixed to the flange f. Can be adopted.

  Furthermore, in order to solve the above-described problems, the present invention provides a technical technique in which a roof mold plate 7 is produced by sandwiching a heat insulating material between wooden or metal plates in addition to the above means as necessary. Means can be employed.

  Furthermore, in order to solve the above-described problems, the present invention provides the following formwork unit panels 1 and 1 on the guide rails 4 arranged at the upper ends of the formwork bands 1a and 1b in addition to the above means as necessary. When placing ..., it is possible to adopt a technical means of disposing the panel side edge joining positions in the lower formwork strips 1a and 1b.

  Furthermore, in order to solve the above-described problems, the present invention can employ technical means for fixing the holding bracket 6 to the attachment position of the perforated plate 5 in addition to the above means as necessary.

Furthermore, in order to solve the above-described problems, the present invention can employ technical means of using the steel beam B in a steel structure having a ramen structure in addition to the above-described means as necessary.

In the present invention, in a steel structure that is a combination of steel beams, a plurality of stages are rolled up sequentially to form a pair of formwork walls, while being disposed on a part of the inner formwork wall. While forming the floor board coupling part which can join the floor board by inserting the anchor rebar into the through hole of the perforated plate body,
While fixing the holding bracket to the inner formwork wall, and fixing the holding bracket to the adjacent steel beam, while pouring concrete into the internal space created between the formwork walls,
At the uppermost end of the inner formwork wall, a roof formwork plate of the same quality as the formwork unit panel is placed on a small beam installed on the top end portion, and concrete is placed on the roof formwork plate. After the pouring and further hardening of the concrete, the outer peripheral part of the steel structure can be insulated very reasonably by placing a heat insulating roof plate serving as an upper lid.

  As described above, if the construction method of the present invention is carried out, an excellent heat insulation function can be realized in a building composed of a steel structure, and an existing lightweight steel structure can be used effectively, thereby shortening the construction period. At the same time, it is possible to reduce the cost of foundation work and main construction work, and it has a profound feeling and strength comparable to reinforced concrete buildings.

  In addition, the formwork wall can be installed at any position, and it is only necessary to assemble a formwork unit panel that can be used as it is with a discarded formwork. Compared to a reinforced concrete building, the structure has a narrow pillar, Since the number can be reduced, the degree of practical use in the construction field can be said to be very high, since the degree of freedom in the layout increases and it becomes easy to change the future.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described in more detail with reference to the drawings specifically shown below.

  An embodiment of the present invention will be described with reference to FIGS. In the figure, what is indicated by reference numeral 1 is a formwork unit panel. This formwork unit panel 1 is made of a heat insulating material (for example, polyurethane material, polystyrene material, etc.) and has a strength that can be used as a concrete formwork. It is a plate-shaped member that combines.

Reference numeral 2 designates a starting base. The starting base 2 is a guide member having a concave groove 21 for standing the formwork unit panel 1 upright. In the present embodiment, a long steel member having a light groove cross section is employed.

  Furthermore, what is indicated by reference numeral 3 is a connecting tool, and this connecting tool 3 is a bent bar formed into a mussel shape.

  Further, what is indicated by reference numeral 4 is a guide rail, and this guide rail 4 is a member disposed on the upper end of the formwork unit panel 1 and adopts a long steel member having a substantially T-shaped cross section. To do.

  Furthermore, what is indicated by reference numeral 5 is a perforated plate body, and this perforated plate body 5 is made of a heat insulating material of the same quality as the above-mentioned form unit unit panel 1 and can be inserted through the anchor rebar Q. This is a plate-like member in which a hole 51 is opened.

  Furthermore, what is indicated by reference numeral 6 is a holding bracket, and this holding bracket 6 is a member that is fixed to the formwork unit panel 1 and the adjacent steel beam B and connects both members.

In addition, what is indicated by reference numeral 7 is a roof formwork plate, and this roofboard formwork 7 is made of a heat insulating material of the same quality as the formwork unit panel 1, and in this embodiment, the heat insulating material is made of wood or metal. Adopting a material produced by sandwiching it with a plate made of metal has sufficient strength, so that no thick end material or support work is required.

  Therefore, the present invention constructs a heat insulation structure of an outer wall / roof in a steel structure (in this embodiment, a ramen structure) formed by combining steel beams B, and a specific construction procedure will be described below. To do.

[Construction procedure]
First, as shown in FIG. 1, a small dancer A is arranged toward the upper side of the foundation beam P. This Komai Rebar A may be a vertical and horizontal lattice of 200 mm intervals of D10 reinforcing bars.

  Then, as shown in FIG. 2, the long starting bases 2 and 2 are juxtaposed on both sides of the small dancer A, and in the groove 21 of each starting base 2, the heat insulating material is used. The formwork unit panels 1, 1... That are formed are placed in a row, and a pair of facing formwork bands 1 a and 1 b are formed in one step.

  .. Are connected between the upper ends of the formwork strips 1a and 1b erected in this way at predetermined intervals to connect and hold both members (see FIGS. 3 and 4).

  Next, guide rails 4 are further arranged on the upper ends of the formwork strips 1a and 1b, and the next-stage formwork unit panels 1 and 1 are placed on the guide rails 4 respectively.

  In this way, the pair of formwork walls 1A and 1B can be formed by sequentially stacking the formwork bands 1a and 1b in a plurality of stages (see FIGS. 5 and 6). In this way, when the next-stage formwork unit panels 1, 1... Are placed on the guide rails 4 arranged at the upper ends of the formwork bands 1 a, 1 b, the panels in the lower-stage formwork bands 1 a, 1 b By disposing the positions different from the side edge joining positions, it is possible to prevent panel displacement and pressure concentration, and to increase the strength.

  In order to start up the wall body as described above and to join the wall body to the steel structure (framework), the following configuration is required. That is, the perforated plate 5 is disposed in a part of the inner mold wall 1A of the mold walls 1A and 1B, and the anchor rebar Q is inserted into the through hole 51 of the perforated plate 5. A floor board joining portion capable of joining floor boards is formed.

  As shown in FIGS. 7 and 8, the holding bracket 6 is fixed to the inner mold wall 1A. At this time, the holding bracket 6 is fixed to the attachment position of the perforated plate 5. Then, the holding bracket 6 is fixed to the adjacent steel beam B (large beam). In this embodiment, the steel beam B is H-shaped steel, and the holding bracket 6 is clamped and fixed to the flange f.

  The holding bracket 6 may sandwich one flange f as shown in FIG. 9A, or both the upper and lower flanges f as shown in FIG. 9B. -The thing which can clamp f may be sufficient. Thereafter, concrete can be poured into the internal space created between the formwork walls 1A and 1B.

  Then, when the slab is formed on the steel beam B (corresponding to the large beam), after placing the floor deck plate, the anchor rebar Q protrudes, and the concrete is cast and hardened. Thus, the wall surface and the steel frame can be fixed integrally (see FIG. 10). At this time, the anchor reinforcing bars Q may protrude in the vertical direction of the through hole 51 of the effective plate 5 or may protrude in the 45 degree direction.

  Furthermore, as shown in FIG. 11, the perforated plate member 5 is also provided at the uppermost end of the inner formwork wall 1A to form a roof joint portion, and the small beam erected on the top end portion. A roof mold plate 7 having the same quality as that of the mold unit panel 1 is placed thereon, and concrete is poured onto the roof mold plate 7.

  And after this concrete hardens to some extent, the outer peripheral part of a steel structure building can be thermally insulated by mounting the heat insulation roof board 8 used as an upper cover. The building plan up to the roof is configured as shown in FIG.

  Moreover, as shown in FIG. 13, the outer mold | work form wall 1B can also be provided with a basket and a balcony suitably. At this time, since the jump beam H supporting the balcony and the like unavoidably protrudes from the building, heat may be conducted from the room to dissipate it, and complete heat insulation cannot be performed.

  Therefore, a heat insulating material such as urethane foam is blown or wound around the jump beam H and the connecting beam T, and a heat insulating plate (for example, the same material as the mold unit panel 1 or the roof mold plate 7) is laid thereon. Moreover, a balcony or a handrail wall can be formed from on-site concrete.

  The present invention is generally configured as described above. However, the present invention is not limited to the illustrated embodiment, and various modifications can be made within the description of “Claims”. The steel beam B for fixing is not limited to the H-shaped steel but may be a lip shape or the like, and belongs to the technical scope of the present invention.

It is a description front view showing the process of embodiment of this invention. It is a description front view showing the process of embodiment of this invention. It is a description front view showing the process of embodiment of this invention. It is an explanatory perspective view showing a process of an embodiment of the present invention. It is a description front view showing the process of embodiment of this invention. It is an explanatory perspective view showing a process of an embodiment of the present invention. It is a description front view showing the process of embodiment of this invention. It is an explanatory perspective view showing the joint part of the embodiment of the present invention. It is an explanatory front view showing the holding bracket of the embodiment of the present invention. It is a description front view showing the process of embodiment of this invention. It is a description front view showing the process of embodiment of this invention. It is an explanatory perspective view showing a process of an embodiment of the present invention. It is an explanatory front view showing the modification of the embodiment of the present invention.

Explanation of symbols

1 Formwork unit panel 1a, 1b Formwork band 1A (Inner side) Formwork wall 1B (Outside) Formwork wall 2 Starting base
21 groove 3 connector 4 guide rail 5 perforated plate
51 Through hole 6 Holding bracket 7 Roof form plate 8 Insulated roof plate A Komai B B Steel beam f Flange P Foundation beam Q Anchor rebar H Jumping beam T Connecting beam

Claims (7)

In constructing the heat insulation structure of the outer wall / roof in the steel structure composed of the steel beam B,
While the Komai muscle A is arranged above the foundation beam P, the long starting bases 2 and 2 are juxtaposed on both sides of the Komai muscle A, and each starting base 2 In the concave groove 21, the mold unit unit panels 1, 1... Made of a heat insulating material are fitted and lined up, and a pair of opposing mold frames 1 a, 1 b are formed in one step,
Both the members are connected and held by laying the squirrel-shaped connecting tools 3, 3,.
Further, guide rails 4 are arranged on the upper ends of these formwork strips 1a and 1b, and the next-stage formwork unit panels 1, 1... Are placed on the guide rails 4 in this way. While forming the pair of formwork walls 1A and 1B by sequentially stacking the turn formwork bands 1a and 1b,
A perforated plate 5 is disposed in a part of the inner mold wall 1A of the mold walls 1A and 1B, and an anchor rebar Q is inserted into a through hole 51 of the perforated plate 5 to attach a floor plate. While forming a floor plate joint that can be joined,
While fixing the holding bracket 6 to the inner mold wall 1A and fixing the holding bracket 6 to the adjacent steel beam B, the concrete is poured into the internal space created between the mold walls 1A and 1B. ,
The perforated plate member 5 is also disposed at the uppermost end of the inner formwork wall 1A to form a roof joint portion, and the formwork unit panel 1 is placed on a small beam installed on the top end portion. Place the same quality roof mold 7 and pour concrete onto the roof mold 7
A heat insulation construction method for an outer wall / roof in a steel structure, wherein after the concrete is hardened to some extent, an outer peripheral portion of the steel structure is insulated by placing a heat insulating roof plate 8 serving as an upper lid.   2. The method for heat insulating construction of an outer wall / roof in a steel structure according to claim 1, wherein the starting base 2 is a long steel member having a light groove-shaped cross section.   The method for heat insulation construction of an outer wall / roof in a steel structure according to claim 1 or 2, wherein the steel beam B is H-shaped steel and the holding bracket 6 is clamped and fixed to the flange f.   The heat insulation of the outer wall and the roof in the steel structure building according to any one of claims 1 to 3, wherein the roof mold plate 7 is produced by sandwiching a heat insulating material between wooden or metal plates. Construction method.   When the next-stage formwork unit panels 1, 1... Are placed on the guide rails 4 arranged at the upper ends of the formwork bands 1 a, 1 b, the panel-side edge joining positions in the lower-stage formwork bands 1 a, 1 b and each other The heat insulation construction method for an outer wall / roof in a steel structure building according to any one of claims 1 to 4, wherein the heat insulation construction method is arranged differently.   The method for heat insulation construction of an outer wall / roof in a steel structure building according to any one of claims 1 to 5, wherein the holding bracket 6 is fixed at a mounting position of the perforated plate body 5.   The method for heat insulation construction of an outer wall and a roof in a steel structure according to any one of claims 1 to 6, wherein the steel beam B is used for a steel structure having a ramen structure.

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