JP2004011269A - Concrete structure and its construction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure with an economical, waste-free arrangement by using a heat insulator and wire net over a panel for a concrete structure such as a foundation, wall or column. <P>SOLUTION: The heat insulator 6 is provided along a panel 4 of a permanent form which is laminated via reinforcement 3 placed in foundation concrete 2, with a space part provided between the heat insulator and the reinforcement, and the heat insulator opposed to the panel. The welded wire net 7 is attached to the heat insulator 6, and the reinforcements 3, 10, the panel 4, the heat insulator 6 and the welded wire gauze 7 are integrally connected together by a connector 8 placed across the reinforcement 3. Concrete is poured into the space part 5 between the panel 4 and the heat insulator 6 in this arrangement to integrate all of these components together to construct a concrete structure 1. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a concrete structure for construction and a method for constructing the same. More specifically, the present invention relates to a concrete structure formed by connecting a panel in which reinforcing reinforcing bars are laminated, a heat insulator and a wire mesh attached thereto, and a method of constructing the concrete structure.
[0002]
[Prior art]
In general, when constructing various structures using concrete, for example, in the case of foundations such as bases, walls, pillars, etc., a wooden, metal or other formwork is installed in advance according to the structure, and this mold is used. When concrete is poured into the frame, and the concrete is dried and hardened, and the mold is removed, the hardened concrete body becomes the structure. Usually, steel bars are inserted to secure the strength of the concrete body.
[0003]
Generally, since a plywood form is used as a dam for a formwork for constructing a reinforced concrete structure, a round separator having screws at both ends of a round steel material is used as a connecting tool. The round separator can hold a damping plate by being used together with a mold spacing maintaining cone, a foam tie, a type 3 rib washer, a nut, a single pipe, and the like. After the concrete is hardened, the mold, round separator, mold spacing maintaining cone, form tie, type 3 rib washer, nut, single pipe, etc. are dismantled and removed, leaving only the round separator. This is done manually and repeatedly for each construction.
[0004]
As a concrete structure, there are a case where the surface is finished and used as it is, and a case where a building is constructed by adding a building finishing material such as a tile to the concrete structure, and the structure differs depending on the building. This method is a method generally used conventionally, and installation and removal of a formwork are manually performed on site.
[0005]
Recently, as one method of forming a concrete structure, a method in which a plate-shaped frame, that is, a panel itself, is integrated with concrete as a part of a structure without using a wooden form as described above, is constructed. Has been proposed. As an example thereof, there is JP-A-59-10640.
[0006]
In this method, a flat concrete form panel to be a part of the structure is pre-formed as a permanent form, and a plurality of panels are arranged face to face at intervals in the thickness direction. In addition, this is a construction method in which a frame is formed by arranging the panels in the up, down, and width directions, and after connecting the panels with a coupling tool, pouring concrete and forming a concrete structure. It is known to pour concrete between wooden frames or panels to form a concrete structure.
[0007]
[Problems to be solved by the invention]
By the way, the conventional method has not been satisfactory not only in terms of economic and technical effects but also in improvement of work efficiency. That is, in the former, the installation and removal of the formwork must be performed on site and manually, which requires man-hours for setting the formwork, and has a problem in terms of work efficiency. In addition, work such as surface finishing cannot be performed until the poured concrete is dried and hardened. Further, considering the time required for removing the formwork, the construction period is prolonged, which is an economic problem.
[0008]
Conventionally, since the round separator left after concrete hardening was made of steel, the heat conduction resistance ratio was low in the past, and it became a hot bridge in the summer and a cold bridge in the winter, permitting the entrance and exit of unintended heat to the room. . For this reason, the increase in the cooling / heating load in the room and the dew water in the cold bridge portion cause rusting of the round separator and deterioration of the concrete, thereby significantly reducing the durability of the reinforced concrete structure. In the present invention, a welded wire mesh and a rigid foamed plastic heat insulating material are stacked and used without using a round separator, a mold spacing maintaining cone, a foam tie, a three-type rib washer, a nut, a single pipe, or the like. In combination with the use of panels, this is a construction technology that makes permanent insulation frames for reinforced concrete structures, and contributes to cost reduction, energy saving, resource saving, labor saving, high durability of buildings and protection of the global environment.
[0009]
The present invention has been made based on such technical background, and when concrete is poured into a frame in which panels are laminated and integrated with a reinforcing steel bar to form a concrete structure, in addition to the panels, heat insulation is provided on the panels. By providing a material and a wire mesh, and fixing them with a non-thermally conductive coupling, assembly is easy, strength is enhanced, there is heat insulation, and furthermore, on the outside and inside of the concrete structure It is an object of the present invention to provide a concrete structure and a method for constructing the concrete structure so as not to be thermally conducted across the bridge.
[0010]
In addition, the present invention can be economically implemented at low cost, and furthermore, since there is no material to be disposed of during construction, energy saving, resource saving, labor saving, etc. are achieved, and concrete which can also contribute to global environmental protection. An object of the present invention is to provide a structure and its construction method.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, a concrete structure of the present invention is a building concrete structure that is constructed by stacking, and a reinforcing bar erected on a foundation and a predetermined position near the reinforcing bar. A panel that is provided in a stacked manner and constitutes an inner wall surface of the structure, a heat insulator provided in parallel with the reinforcing bar facing the panel, a welding wire mesh attached to the heat insulator side, and the reinforcing bar. The reinforcing bar and the connecting body for connecting the panel, the heat insulator and the welded wire mesh are provided across the reinforcing bar, and the concrete poured between the panel and the heat insulator.
[0012]
Further, a configuration may be adopted in which a bar is attached to the panel, and the joined body is connected to the panel via the bar. The pier may be wooden or steel. Wooden piers can be easily handled on site and nailed. Steel piers cannot be nailed, but construction is simplified.
Further, the welding wire mesh may be fixed to the joined body by a joining material. The welded wire mesh can be securely fixed to the joined body. The bonding material may be a bar such as a reinforcing bar, wood, plastic, or the like.
Further, the coupling body may be made of synthetic resin and have a configuration having a projection at an end. It is effective in suppressing heat penetration.
[0013]
The method for constructing a concrete structure according to the present invention is a method for constructing a concrete structure for building that is constructed by stacking, comprising a step of erecting a plurality of reinforcing bars on a foundation and a panel near the reinforcing bars. Positioning, stacking and installing, reinforcing the reinforcing bar between the panel and a heat insulator in parallel with the panel, attaching a welding wire mesh to the heat insulator side, and crossing the reinforcing bar. The method includes a step of integrally connecting the reinforcing bar, the panel, the heat insulator, and the welded mesh with the joint, and a step of pouring concrete between the heat insulator and the panel.
[0014]
Further, the joining step may be a step of joining a plurality of joined bodies made of synthetic resin and having projections over the components. The projecting portion can hold the mating member and is effective in suppressing heat penetration. Further, in the connecting step, a bar is attached to the panel, and the connecting body is connected to the panel via the bar. It may be a journey. The panel may be a large panel. In particular, when the crosspiece is made of wood, it can be easily dealt with on site and can be screwed and nailed.
Further, the joining step may include a step of joining the joined body of the welded metal mesh with a joining material. The welded wire mesh can be securely fixed to the joined body.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing a concrete structure 1 of the present invention. FIG. 2 is a front view thereof. The concrete structure 1 has a panel 4, a panel 4 and a space 5, and a heat insulating material 6 (heat insulating body) and a welding wire mesh 7 on a reinforcing steel bar 3 erected on a basic concrete 2 as a base body. Are attached to each other via a reinforcing bar 10 in the horizontal direction and a reinforcing bar 11 for connection with a connecting member 8 (coupling body). The panel 4 constitutes one side of a structure such as a wall, and the panel 4 becomes a part of the concrete structure 1 as a permanent form, and becomes, for example, an inner wall surface forming an inner wall of a room.
[0016]
The shape of the panel 4 may be such that a hole is provided in advance so that the coupling member 8 can be attached thereto, or may be a flat slate shape. In this embodiment, the flat panel 4 is used. When the fastener 8 is to be attached to the panel 4, the fastener 12 is joined to the panel 4, and the fastener 8 is joined to the panel 4 via the fastener 12 to be integrated. It is trying to be. The present invention has a basic configuration as described above. When the panels are stacked and constructed at a predetermined height, concrete is poured into the concrete structure 1.
[0017]
Next, a partial mounting configuration of the panel will be described. The foundation concrete 2 is configured as shown in FIG. 3 and a pier 9 is installed at the position where the ink is applied, and the panel 4 is accurately fixed by nailing or the like so that the position is not shifted. Is done. Further, a fitting 12 is provided on the reinforcing bar 3 side of the panel 4, a hole 12 a is provided in the fitting 12, and the projection 8 a of the coupling tool 8 is inserted. In the present embodiment, the joint 8 installed on the foundation concrete 2 is cut in half.
[0018]
FIG. 4 shows the bonding relationship of the panels 4 in the intermediate portion to be laminated. The protruding portion 8a at one end of the coupling tool 8 is inserted into the mounting tool 12 joined to the panel 4. In a state in which the projection 8a at the other end of the connecting tool 8 hooks the welding wire 7, the connecting tool 8 traverses the reinforcing steel bar 3 and extends over the panel 4 and the welding wire 7. At this time, the connecting reinforcing bar 11 is inserted between the welding wire mesh 7 and the connecting tool 8, and the connecting tool 8 is fixed by being sandwiched between the horizontal wires of the welding wire mesh supporting the lower portion of the connecting tool 8. The reinforcing bar 3 is reinforced and strengthened in the lateral direction as described later. The heat insulating material 6 is made of a hard foamed plastic and blocks heat propagation inside and outside the concrete structure 1. The thickness varies depending on the conditions of the building and the like, but is increased in cold regions. Therefore, the thickness of the wall may be large.
[0019]
The welding wire mesh 7 is attached so as to cover the surface of the heat insulating material 6. The welding wire mesh 7 is obtained by stretching and reinforcing a reinforcing bar in a grid pattern in a vertical and horizontal manner. The welded metal mesh 7 side is a surface corresponding to the outer wall side of the building by the concrete structure 1. Mortar may be applied to the welding wire mesh 7 as an outer wall, an outer wall building material may be attached, or a designed panel or the like may be attached.
[0020]
In order to combine and integrate the components of these components, a coupling tool 8 is attached across the panel 4, the reinforcing bar 3, the heat insulating material 6, and the welding wire mesh 7. The coupling tool 8 is made of polypropylene, has an H shape as shown in FIG. 5, and has protrusions 8a at both ends. Since it is made of a synthetic resin, unlike a metal-made resin, it is possible to suppress heat penetration from the outer wall, and it is effective for heat insulation. The central part of the coupler 8 has a protruding shape so as to block flowing water, has a concave recess 8b for fitting a reinforcing bar at an upper part, and has a rib for bending rigidity and holding a heat insulator. I have.
[0021]
Furthermore, by making the coupling tool 8 made of a synthetic resin, it is possible to improve the thermal conductivity specific resistance by 200 to 300 times as compared with that of the metal. In this way, after assembling the walls forming a group of molds in one step, the horizontal streaks are placed in the recesses of the coupler 8 in the longitudinal direction, panels and the like are laminated, and the second and subsequent steps are repeated. By repeating such construction, the concrete structure 1 is easily assembled.
[0022]
The concrete structure 1 is obtained by stacking the basic frame structure as described above, sandwiching the reinforcing steel bar 3 therebetween, and pouring concrete into the space 5 of the panel and the heat insulating material 6. A construction method based on the configuration will be described. FIG. 6 to FIG. 12 are illustrations showing the steps of constructing the concrete structure 1. The base concrete 2 has a horizontal reference on a wall or a pillar around a floor in a foundation portion of a building or the like.
[0023]
A part of the reinforcing bar 3 is embedded in the foundation concrete 2, and as shown in FIG. 6, the reinforcing bar 3 forms a part of a component such as a wall centered on the vertical reinforcing bar and is directed upward. There are several standing. The reinforcing bar 3 is provided with bamboo-shaped folds on its surface. The reinforcing bar 3 is provided with reinforcing bars 10 at predetermined intervals in the horizontal direction, and intersects with the reinforcing bars in the vertical direction. The part to be fixed is fixed by a binding wire or welding.
[0024]
The reinforcing bar 3 is buried in the center of the concrete structure 1 such as a wall. On the basis of the position of the reinforcing steel bar 3, ink is put on a predetermined position on the floor surface of the foundation concrete 2. This ink is for accurately setting the mounting position of the panel 4. In the case of the present embodiment, the position of the surface 4a of the panel 4 corresponding to the wall surface in the building room is specified. A pier 9 for attaching the panel 4 is fixed to the floor of the foundation concrete 2 at the position of the panel 4.
[0025]
Next, as shown in FIG. 7, the panel 4 is abutted against the reinforcing bar 3 side surface of the crosspiece 9, and the panel 4 is joined to the crosspiece 9 with a screw nail or the like while applying the coupling tool 8. In this state, since the panel 4 on the floor side is positioned and fixed, another panel 4 can be stacked one after another on the installed panel 4 based on the panel 4 to construct a structure. The joint 8 installed on the foundation concrete 2 is cut in a regular half.
[0026]
In order to reinforce the concrete structure 1, as shown in FIG. 8, a reinforcing bar 10 is attached to a predetermined position in the horizontal direction with respect to the vertical reinforcing bar 3, and a portion intersecting with the vertical reinforcing bar 3 as described above. Band together. Subsequently, as shown in FIG. 9, the heat insulating material 6 is attached to the coupler 8 with the reinforcing reinforcing bar 3 positioned opposite to the panel 4 attachment side with a space therebetween. With this configuration, a space 5 is formed between the panel 4 and the heat insulating material 6.
[0027]
Subsequently, as shown in FIG. 10, a welding wire mesh 7 is attached to the outside of the heat insulating material 6. The welding wire mesh 7 is formed by arranging reinforcing bars vertically and horizontally at predetermined intervals, and as shown in FIG. After being assembled to the panel 4, the connecting reinforcing bar 11 is attached in a state of being bridged over the upper part of the connecting member, and the connecting member 8 is fixed by sandwiching it with the horizontal bar of the welding wire mesh 7 below the connecting member 8. . The position of the welding wire mesh 7 is inside the protrusion 8 a at the end of the coupling tool 8, and fits inside the protrusion 8 a together with the heat insulating material 6. Therefore, the coupling tool 8 is sandwiched between the horizontal reinforcing bar of the welding wire mesh 7 and the connecting reinforcing bar 11, and is further restrained by the lateral reinforcing reinforcing bar 10, and is firmly fixed.
[0028]
The concrete structure 1 of the present invention is basically constructed in such a process. FIG. 12 shows a state in which the second-stage panels 4 are stacked. When the panels 4 are stacked one after another through the joints 8 by repeating this construction and are constructed at a predetermined height, a heat insulating material is formed. Concrete is poured into the space 5 between the panel 6 and the panel 4, and the concrete structure 1 is completed. By such construction, all the used materials become a part of the concrete structure 1, and there is nothing to remove after the construction. FIG. 13 is an explanatory diagram showing the order of the construction steps described above. Steps a to i show the installation of panels on the foundation concrete. In the second and subsequent steps, the steps from j to o are repeated. When the predetermined height is reached, concrete is poured into the space between the panel and the heat insulating material to complete the structure.
[0029]
The panel may not necessarily be on the back of the joint 8, but preferably has a height that is a multiple of the joint pitch. Further, the panel itself may be a plate-like plate made of plywood, steel, cement, or the like as long as it can be tied to the crosspiece.
Although the embodiment of the present invention has been described above, the specific configuration of the present invention is not limited to this embodiment. For example, the order of the construction methods is not necessarily limited to the described embodiment.
[0030]
【The invention's effect】
As described above, the concrete structure of the present invention does not require a wooden frame or the like on the outer wall side, has a simple configuration, reduces the working time, and does not require complicated work. In addition, all of the attached materials constitute a part of the structure, and there is nothing to remove and discard after construction. Therefore, the construction period is shortened, which is economical, and also effective in terms of environmental protection. Furthermore, since the coupling member is made of synthetic resin, the structure has a configuration that is effective in suppressing heat penetration from the outer wall.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a concrete structure of the present invention.
FIG. 2 is a front view showing a concrete structure of the present invention.
FIG. 3 is a cross-sectional view showing a state where a panel is installed on a foundation concrete.
FIG. 4 is a cross-sectional view showing a panel coupling state at an intermediate position.
FIG. 5 is a front view showing a coupler.
FIG. 6 is an explanatory view showing a construction process of a concrete structure and showing a state in which a reinforcing steel bar is erected on a foundation concrete.
FIG. 7 is an explanatory view showing a construction process of a concrete structure and a state where a panel is attached.
FIG. 8 is an explanatory view showing a construction process of a concrete structure and showing a state where a reinforcing horizontal reinforcing bar is attached.
FIG. 9 is an explanatory view showing a construction process of the concrete structure and showing a state where a heat insulating material is attached.
FIG. 10 is an explanatory diagram showing a construction process of a concrete structure and showing a state where a wire mesh is attached.
FIG. 11 is an explanatory view showing a construction process of a concrete structure and showing a state where a coupler is attached.
FIG. 12 is an explanatory view showing a construction process of a concrete structure and showing a state in which panels are stacked.
FIG. 13 is an explanatory diagram showing a construction order of a concrete structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Concrete structure 2 ... Basic concrete 3,10 ... Reinforcing bar 4 ... Panel 5 ... Space part 6 ... Heat insulating material 7 ... Welding wire 8 ... Connector 9 ... Pier 11 ... Reinforcing bar 12 ... Attachment

Claims (8)

An architectural concrete structure constructed by stacking,
Reinforcing bars standing on the foundation,
A panel which is provided by being laminated at a predetermined position near the reinforcing bar and constitutes a wall surface of the structure,
A heat insulator provided in parallel with the reinforcing bar facing the panel,
A welding wire mesh attached to the heat insulator side,
A combined body that is installed across the reinforcing steel bar and that connects the reinforcing steel bar, the panel, the heat insulator, and the welding wire mesh;
A concrete structure comprising concrete poured into the space between the panel and the heat insulator. The concrete structure according to claim 1,
A concrete structure, wherein a pier is attached to the panel, and the connecting body is connected to the panel via the pier. The concrete structure according to claim 1,
A concrete structure, wherein the welding wire mesh is fixed to a joint by a joining material. The concrete structure according to claim 1,
The concrete structure is characterized in that the combined body is made of one of a synthetic resin and a metal and has a configuration having a projection at an end. A construction method of a building concrete structure that is constructed by stacking,
Erecting a predetermined reinforcing bar on the base body,
A step of positioning and stacking panels in the vicinity of the reinforcing bars,
A step of installing a heat insulator in parallel with the panel between the reinforcing bars,
Attaching a welding wire mesh to the heat insulator side;
Crossing the reinforcing bar, integrally connecting the reinforcing bar, the panel, the heat insulator, and the welding wire mesh with the connecting body;
Casting concrete into a space between the panel and the heat insulator. In the method for constructing a concrete structure according to claim 5,
The method for constructing a concrete structure, wherein the step of joining is a step of joining a plurality of joints made of synthetic resin and having projections over the respective components. In the method for constructing a concrete structure according to claim 5,
The method of constructing a concrete structure according to claim 1, wherein the joining step includes a step of attaching a bar to the panel and connecting the joined body to the panel via the bar. In the method for constructing a concrete structure according to claim 5,
The method for constructing a concrete structure, wherein the step of joining includes joining the welded wire mesh to a joint with a joining material.

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