JP6904792B2 - How to build a multi-storey building - Google Patents

Description

The present invention relates to a method for constructing a multi-story building, and more particularly to a method for constructing a multi-story building having an outer wall provided with a concrete layer between an outer heat insulating layer and an inner heat insulating layer.

It is already well known that the outer wall of a multi-story building is constructed of reinforced concrete (hereinafter, also referred to as RC). Further, there is a wall having a laminated structure in the outer wall made of RC. In addition, when placing concrete to construct an outer wall, the building material panel may be used as a formwork, and the building material panel may be left as it is as a part of the outer wall after the concrete is hardened.

To give an example, in the technique described in Patent Document 1, a building material panel constructed by laminating a fire-resistant load-bearing surface material and a heat insulating panel via a plurality of spacers is used as a concrete mold. When concrete is poured into the space provided in the building material panel and the concrete is hardened, the building material panel is integrated with the concrete layer to construct an outer wall. That is, the building material panel is used as it is as a part of the outer wall after functioning as a formwork for placing concrete. With such a configuration, it is not necessary to dismantle the formwork after placing concrete, so that the exterior work of the building can be performed more easily.

JP-A-2002-322745

By the way, in the construction work of a multi-story building, the floor of each floor is constructed, and the outer wall is constructed at a position adjacent to the floor of each floor. When constructing the outer wall, if an outer wall base material (a member corresponding to the "building material panel" of Patent Document 1) that also serves as a formwork is used as in Patent Document 1, the formwork dismantling work after concrete placement is performed as described above. Is no longer needed. Here, when arranging the outer wall base material, it is preferable to place it at a suitable position in relation to the floor (strictly speaking, the slab that constructs the floor), and in particular, the outer wall base material is placed at an appropriate position for safety. It is desirable to place.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is an outer wall as a method for constructing a multi-story building in which an outer wall is constructed using an outer wall base material that also serves as a formwork. It is to provide a construction method in which the substrate is properly positioned in relation to the floor slab.

According to the method for constructing a multi-story building of the present invention, the problem is that an outer wall having a concrete layer and an outer heat insulating layer and an inner heat insulating layer sandwiching the concrete layer, and an outer wall located on the indoor side of the outer wall. A method of constructing a multi-story building including a floor provided adjacent to an outer wall, wherein a slab constituting the floor on two or more floors in the building is installed, and the outer heat insulating layer and the outer heat insulating layer and the slabs constituting the floor are installed. An outer wall base material provided with the inner heat insulating layer and provided with a space for forming the concrete layer between the outer heat insulating layer and the inner heat insulating layer is arranged so as to be adjacent to the installation position of the slab. After arranging the outer wall base material, concrete is poured into the space, and the concrete layer formed by hardening the concrete in the space is combined with the outer heat insulating layer and the inner heat insulating layer of the outer wall base material. When the outer wall is integrally constructed and the outer wall base material is arranged, the outer wall base is positioned so that the upper end of the outer wall base material is located above the upper surface of the slab by a preset length or more. It is solved by arranging the material.

In the method of constructing a multi-story building of the present invention configured as described above, the outer wall base material that is also used as a formwork is arranged at a position adjacent to the floor slab. At this time, the outer wall base material is arranged so that the upper end of the outer wall base material is located above the upper surface of the slab by a preset length or more. As a result, it is possible to prevent the worker who works on the slab on the floor from falling from the end position of the slab by the outer wall base material. That is, the portion of the outer wall base material located above the upper surface of the slab functions as a fall prevention measure.

Further, in the method for constructing a multi-story building described above, when the outer wall base material is arranged so as to be adjacent to the installation position of the slab, the decorative surface material exposed on the outside of the outer wall is the outer heat insulating layer. When the concrete layer is formed by arranging the outer wall base material provided on the outer side and hardening the concrete in the space, the concrete layer becomes the outer heat insulating layer, the inner heat insulating layer, and the decorative layer. It is preferable to construct the outer wall together with the face material.
In the above method, an outer wall base material provided with a decorative surface material is used as a formwork for placing concrete. Therefore, it is not necessary to attach the decorative surface material after placing the concrete. In addition, it is not necessary to install a scaffold for attaching the decorative surface material. As a result, even in a situation where it is difficult to secure a work space outside the outer wall base material, it is possible to easily construct an outer wall provided with a decorative surface material.

Further, in the method for constructing a multi-story building described above, when the outer wall base material is arranged so as to be adjacent to the installation position of the slab, the outer side is opposite to the side where the inner heat insulating layer is located. An outer frame adjacent to the heat insulating layer, an inner frame adjacent to the inner heat insulating layer on the side opposite to the side where the outer heat insulating layer is located, and a separator for maintaining the thickness of the space. It is more preferable that the provided outer wall base material is arranged and concrete is poured into the space in a state where the end portion of the separator penetrating the inner heat insulating layer is fastened to the inner frame.
In the above method, the outer wall base material is arranged in a state where the distance between the outer heat insulating layer and the inner heat insulating layer is maintained by the separator in the outer wall base material. This makes it possible to place concrete in the space while maintaining the thickness of the space in the outer wall base material. As a result, when constructing the outer wall, it becomes possible to appropriately form a concrete layer having a specified thickness.

Further, in the above-described method for constructing a multi-story building, when placing concrete in the space, it is more preferable to place concrete through the opening at the upper end of the space.
In the above method, when concrete is placed in the space inside the outer wall base material after the placement of the outer wall base material, the concrete is placed through the upper end opening of the space. This makes it possible to easily and appropriately place concrete in the space.

Further, in the method for constructing a multi-story building described above, the slabs constituting the floor on the lower floor, which is the second floor or higher, are installed so as to be adjacent to the installation positions of the slabs constituting the floor on the lower floor. The outer wall base material is placed in the space of the outer wall base material arranged so as to be adjacent to the installation position of the slab constituting the floor on the lower floor, and concrete is poured into the space of the lower floor. After the concrete placed in the space of the outer wall base material arranged so as to be adjacent to the installation position of the slab constituting the floor is hardened to form the concrete layer, the lower floor The slab that constitutes the floor on the upper floor, which is the immediate upper floor, is installed, the outer wall base material is arranged so as to be adjacent to the installation position of the slab that constitutes the floor on the upper floor, and the slab on the upper floor is said. It is even more preferable to place concrete in the space of the outer wall base material arranged so as to be adjacent to the installation position of the slab constituting the floor.
In the above method, a slab constituting the floor of the lower floor is installed, an outer wall base material is placed at a position adjacent to the slab, and concrete is poured into the space inside the outer wall base material to form a concrete layer. .. After that, a slab that constitutes the floor of the upper floor located directly above the lower floor is installed, an outer wall base material is placed at a position adjacent to the slab, and concrete is poured into the space inside the outer wall base material to make concrete. Form a layer. By repeatedly installing slabs, arranging outer wall base materials, and placing concrete on each floor as described above, it is possible to construct a building having three or more floors relatively easily.

Further, in the method for constructing a multi-story building described above, when the outer wall base material is arranged, the outer wall base is located so that the upper end of the outer wall base material is 800 mm or more and is located above the upper surface of the slab. Placing the lumber is even more preferable.
According to the above method, the outer wall base material is arranged so that the upper end of the outer wall base material is 800 mm or more and is located above the upper surface of the slab. That is, the outer wall base material is arranged in a state of protruding upward by 800 mm or more from the upper surface of the slab. This makes it possible to handle the portion of the outer wall base material that protrudes from the upper surface of the slab as a "handrail" under the law. Then, the outer wall base material as the "handrail" makes it possible to effectively prevent the worker who works on the slab on the floor from falling from the end position of the slab.

Further, in the method for constructing a multi-story building described above, when concrete is placed in the space, the end of the slab faces the space so that the concrete layer is connected to the slab. Placing concrete is more and more suitable.
According to the above method, the concrete layer in the outer wall can be connected to the floor (slab) by placing concrete in the space with the edge of the slab facing the space in the outer wall base material. Become.

According to the method for constructing a multi-story building of the present invention, when the outer wall base material that is also used as a formwork is arranged at a position adjacent to the floor slab, the upper end of the outer wall base material has a preset length. Above that, it is arranged so as to be located above the upper surface of the slab. As a result, it is possible to prevent the worker who works on the slab on the floor from falling from the end position of the slab by the outer wall base material.

It is a front view of the multi-story building constructed by the construction method which concerns on one Embodiment of this invention. It is a rear view of the multi-story building constructed by the construction method which concerns on one Embodiment of this invention. It is a vertical sectional view of the outer wall of a building, and is the figure which shows the XX cross section of FIG. 1A. It is a figure which shows the work flow about the outer wall and the floor during the construction work of a building. It is a top view of the outer wall base material used in the construction method which concerns on one Embodiment of this invention. It is a schematic diagram which shows the state of the construction process of a multi-story building (No. 1). It is a schematic diagram which shows the state of the construction process of a multi-story building (No. 2). It is a schematic diagram which shows the state of the construction process of a multi-story building (No. 3). It is a figure which shows the positional relationship between the slab of a floor, and the base material of an outer wall.

Hereinafter, a method for constructing a multi-story building according to an embodiment of the present invention (hereinafter referred to as the present embodiment) will be described. The embodiments described below are examples for facilitating the understanding of the present invention, and do not limit the present invention. That is, the present invention can be modified or improved without departing from the spirit of the present invention. Also, of course, the present invention may include an equivalent thereof.

In the following explanation, the position and posture (mounting posture) of each building material will be explained in the completed building unless otherwise specified.

The structure of a multi-story building (hereinafter referred to as building B) to be constructed by the construction method according to the present embodiment will be described. Building B is a multi-story (for example, five-story) RC structure building, and as shown in FIGS. 1A and 1B, has an outer wall 2 constituting the outer surface of the building B and a floor 3 on each floor. .. 1A and 1B show the appearance of the building B, FIG. 1A is a front view of the building B, and FIG. 1B is a rear view of the building B.

The floor 3 is installed on the indoor side of the outer wall 2, and is horizontally provided at a position adjacent to the outer wall 2 in the building B. The floor 3 is configured by placing a flooring material (not shown) on the slab 30 (concrete slab).

The outer wall 2 is a wall body having a laminated structure as shown in FIG. Specifically, as shown in the figure, a layer made of concrete (concrete layer 14) and two heat insulating layers sandwiching the layer (hereinafter, outer heat insulating layer 13) are located in the middle portion of the outer wall 2 in the thickness direction. And the inner heat insulating layer 15). FIG. 2 is a vertical cross-sectional view of the outer wall 2, and is a view showing an XX cross section of FIG. 1A.

Here, the outer wall 2 is to be constructed in the process of constructing the building B. More specifically, concrete is cast in the space between the outer heat insulating layer 13 and the inner heat insulating layer 15, and the cast concrete is hardened to form the concrete layer 14 to construct the outer wall 2.

Further, the portion of the outer wall 2 that is located on the most outdoor side and is exposed is made of the decorative surface material 11. The decorative surface material 11 is arranged on the outer wall 2 outside the outer heat insulating layer 13. The decorative surface material 11 according to the present embodiment is made of a ceramic siding. However, the material constituting the decorative surface material 11 is not particularly limited.

Explaining the outer wall 2 in more detail with reference to FIG. 2, the outer wall 2 has a decorative surface material 11, an outer frame 12, an outer heat insulating layer 13, a concrete layer 14, an inner heat insulating layer 15, and an inner frame 16 from the outdoor side.

The outer frame 12 is a frame body adjacent to the outer heat insulating layer 13 on the outdoor side (in other words, the side opposite to the side where the inner heat insulating layer 15 is located when viewed from the outer heat insulating layer 13). It consists of a square pipe made of aluminum. However, the material of the outer frame 12 is not limited to metal, and may be a resin material or wood. Further, the outer frame 12 is also used as a base material for the decorative surface material 11, and the decorative surface material 11 is fixed to the outer surface of the outer frame 12 via a fastener 19a.

The square pipes forming the outer frame 12 are arranged at regular intervals in the space between the decorative surface material 11 and the outer heat insulating layer 13. On the other hand, in the space between the decorative surface material 11 and the outer heat insulating layer 13, the region where the square pipe is not arranged forms the ventilation layer 19 of the outer wall 2. The ventilation layer 19 is a space (gap) for discharging the air that has entered the outer wall 2.

The outer heat insulating layer 13 and the inner heat insulating layer 15 have a slight thickness, and are made of styrofoam in the present embodiment. However, the materials of the outer heat insulating layer 13 and the inner heat insulating layer 15 are not particularly limited.

The inner frame 16 is a frame body adjacent to the inner heat insulating layer 15 on the indoor side (in other words, the side opposite to the side where the outer heat insulating layer 13 is located when viewed from the inner heat insulating layer 15). More specifically, the inner frame 16 is formed by assembling the vertical end thickness 16a extending in the vertical direction and the horizontal end thickness 16b extending in the horizontal direction in a grid pattern.

The building B having the outer wall 2 and the floor 3 described above is constructed from the first floor to the upper floor. More specifically, in the construction process of the building B, as shown in FIG. 3, the slab 30 constituting the floor 3 on the lower floor is installed, and then the outer wall 2 is constructed at a position adjacent to the slab 30. After that, the slab 30 constituting the floor directly above is installed, and the outer wall 2 is constructed at a position adjacent to the slab 30. Building B is constructed by repeating the installation of the slab 30 and the construction of the outer wall 2 as many times as the number of floors of the building B in this way. FIG. 3 is a diagram showing a work flow regarding the outer wall 2 and the floor 3 during the construction work of the building B.

Further, when constructing the outer wall 2, as described above, concrete is poured to form the concrete layer 14 of the outer wall 2. At this time, a large panel member (hereinafter, outer wall base material 20) forming the base material of the outer wall 2 is arranged, and the outer wall base material 20 is used as a formwork for placing concrete. As shown in FIG. 4, the outer wall base material 20 has a decorative surface material 11, an outer frame 12, an outer heat insulating layer 13, an inner heat insulating layer 15, and an inner frame 16. That is, each layer in the outer wall 2 except the concrete layer 14 is unitized to form the outer wall base material 20. FIG. 4 is a plan view of the outer wall base material 20 used in the construction method according to the present embodiment.

Here, in the outer wall base material 20, a space S for forming the concrete layer 14 is provided between the outer heat insulating layer 13 and the inner heat insulating layer 15. That is, concrete is cast in the space S, and the concrete in the space S is hardened to form the concrete layer 14. Then, the outer wall 2 is constructed by integrating the concrete layer 14 with each layer (decorative surface material 11, outer frame 12, outer heat insulating layer 13, inner heat insulating layer 15 and inner frame 16) of the outer wall base material 20.

Then, after the outer wall 2 is constructed, the outer wall base material 20 is left as it is as a part of the outer wall 2. That is, in the present embodiment, since the formwork used for forming the concrete layer 14 in the outer wall 2 is used as a part of the outer wall 2, it is not necessary to disassemble the formwork. As a result, a scaffolding or the like for dismantling the formwork becomes unnecessary, and the labor of dismantling work can be saved. In addition, when the outer wall 2 is constructed by using the outer wall base material 20 according to the present embodiment, it is not necessary to install the scaffolding on the outer side of the outer wall 2, so that, for example, the distance from the adjacent building becomes relatively small. This is especially effective when building a building B in such a place (narrow land).

Further, in FIG. 4, the outer wall base material 20 is provided with a separator 17 for maintaining the thickness of the space S. The separator 17 has substantially the same structure as a general formwork separator. Specifically, the separator 17 has a pair of cones 17a arranged in the space S and in contact with the outer heat insulating layer 13 and the inner heat insulating layer 15, and a connecting shaft that penetrates each cone 17a and connects the cones 17a. It has 17b and.

Of both ends of the connecting shaft 17b, one end that penetrates the cone 17a that is in contact with the outer heat insulating layer 13 penetrates the outer heat insulating layer 13 and the outer frame 12 as shown in FIG. Further, a rectangular plate-shaped fastener 19a is fixed to the tip of one end of the connecting shaft 17b. The fastener 19a is locked by the outdoor side end surface of the outer frame 12. This makes it possible to prevent one end of the connecting shaft 17b from coming off and the separator 17 from coming off.

The other end of the connecting shaft 17b that penetrates the cone 17a that is in contact with the inner heat insulating layer 15 penetrates the inner heat insulating layer 15 and the inner frame 16 as shown in FIG. The ends of the connecting shaft 17b that penetrate the inner heat insulating layer 15 and the inner frame 16 are fastened to the inner frame 16 by a predetermined fastener 18 (specifically, a foam tie (registered trademark)). ..

Since the separator 17 is provided on the outer wall base material 20, the thickness of the concrete layer 14 becomes a specified thickness when concrete is cast into the space S of the outer wall base material 20 to form the concrete layer 14. It is possible to form the concrete layer 14 so as to be.

The outer wall base material 20 described above is arranged at a predetermined position (position where the outer wall 2 is constructed) when constructing the outer wall 2. Further, in the present embodiment, a plurality of types of outer wall base materials 20 having different heights are used. Hereinafter, the lower height outer wall base material 20 is referred to as a "low-profile outer wall base material 20". The high outer wall base material 20 will be referred to as a "tall outer wall base material 20". Incidentally, in the present embodiment, the height of the low-profile outer wall base material 20 is set to 800 mm to 1000 mm, and the height of the high-height outer wall base material 20 is set to 2700 mm to 30,000 mm.

In the tall outer wall base material 20, as shown in FIG. 2, the upper ends of each of the inner heat insulating layer 15 and the inner frame 16 form the base material upper fragment 20X. The base material upper fragment 20X is separated from the base material main body (a portion of the tall outer wall base material 20 other than the base material upper fragment 20X).

Next, a method of constructing the building B using the outer wall base material 20 will be described with reference to FIGS. 3 and 5 to 7 described above. 5 to 7 are schematic views showing a state of the construction process of the building B. The construction process proceeds in the order of FIG. 5, FIG. 6, and FIG. 7. Further, in each of the drawings of FIGS. 5 to 7, for convenience of illustration, each building material is shown in a somewhat simplified manner.

First, the construction work of the building B is started from the foundation work as in the normal building construction work, and then the skeleton work and the exterior work are carried out. Among them, the floor 3 is installed and the outer wall 2 is constructed. More specifically, as shown in FIG. 3, first, the slab 30 constituting the floor 3 on the first floor is installed (S001). After that, as shown in FIG. 5, a low-profile outer wall base material 20 is arranged above the edge of the slab 30 constituting the floor 3 on the first floor (S002). At this time, the outer wall base material 20 is arranged so that the decorative surface material 11 is located on the outdoor side of the outer wall base material 20 and is exposed.

After arranging the low-profile outer wall base material 20 as described above, the ready-mixed concrete C (concrete) is placed in the space S in the outer wall base material 20 (S003). At this time, as shown in FIG. 5, the ready-mixed concrete C is placed through the upper end opening of the space S. Further, while the ready-mixed concrete C is being placed, one end of the separator 17 provided on the outer wall base material 20 is fixed by locking the fastener 19a provided at the tip thereof to the outer frame 12. ing. On the other hand, the other end of the separator 17 is fastened to the inner frame 16 by a fastener 18. As a result, the thickness of the space S is appropriately maintained by the separator 17 while the ready-mixed concrete C is placed.

After that, when the cast ready-mixed concrete C is hardened to form the concrete layer 14, the concrete layer 14 constructs the outer wall 2 together with the low-profile outer wall base material 20. That is, the concrete layer 14 is integrated with the outer heat insulating layer 13 and the inner heat insulating layer 15 located on both sides of the concrete layer 14 to construct the outer wall 2. The outer wall 2 constructed in the above steps S002 and S003 is the lowermost outer wall 2 in the building B, and will be hereinafter referred to as the lowermost outer wall 2.

After constructing the lowermost outer wall 2, the slab 30 constituting the floor 3 on the second floor is installed (S004). After that, as shown in FIG. 6, the tall outer wall base material 20 is arranged so as to be adjacent to the installation position of the slab 30 constituting the floor 3 on the second floor (S005). More specifically, the tall outer wall base material 20 is arranged at a position directly above the lowermost outer wall 2. At this time, the outer wall base material 20 is arranged so that the decorative surface material 11 is located on the outdoor side of the outer wall base material 20 and is exposed.

More precisely, in the present embodiment, the outer wall base material 20 (that is, the base material main body) in the state where the base material upper fragment 20X is removed is arranged on the lowermost outer wall 2. At this time, the base material body is arranged so that the inner heat insulating layer 15 and the inner frame 16 in the base material body slip under the slab 30 that constructs the floor 3 on the second floor. Then, as shown in FIG. 6, the base material upper fragment 20X is placed and fixed on the upper surface of the slab 30 for constructing the floor 3 on the second floor. As a result, the outdoor side end of the slab 30 constituting the floor 3 on the second floor is sandwiched between the base material upper fragment 20X and the base material main body in the vertical direction so as to face the space S in the outer wall base material 20. Become.

After arranging the tall outer wall base material 20 as described above, the ready-mixed concrete C is placed in the space S in the outer wall base material 20 as shown in FIG. 6 (S006). At this time, as in step S003, the ready-mixed concrete C is placed through the upper end opening of the space S. Further, during the casting period of the ready-mixed concrete C, one end of the separator 17 is fixed by locking the fastener 19a provided at the tip of the separator 17 to the outer frame 12, and the other end is fixed. It is fastened to the inner frame 16 by a fastener 18. As a result, the thickness of the space S is appropriately maintained by the separator 17 while the ready-mixed concrete C is placed.

In the present embodiment, the ready-mixed concrete C is placed in the space S with the outdoor side end of the slab 30 constituting the floor 3 on the second floor facing the space S. Therefore, when the ready-mixed concrete C is filled in the space S, the ready-mixed concrete C comes into contact with the outdoor side end of the slab 30.

After that, the cast ready-mixed concrete C is hardened to form the concrete layer 14, and the outer wall 2 is constructed together with the tall outer wall base material 20. That is, the concrete layer 14 is integrated with the outer heat insulating layer 13 and the inner heat insulating layer 15 located on both sides of the concrete layer 14 to construct the outer wall 2 (hereinafter, the second outer wall 2). Further, in the present embodiment, since the ready-mixed concrete C is placed so as to be in contact with the outdoor side end of the slab 30 constituting the floor 3 on the second floor as described above, the concrete layer 14 is connected to the slab 30. .. As a result, the concrete layer 14 in the outer wall 2 of the second stage is integrated with the floor 3 on the second floor.

After constructing the second-stage outer wall, the slab 30 constituting the floor 3 on the floor directly above (that is, the third floor) is installed (S007). Here, the slab 30 that constitutes the floor 3 on the third floor corresponds to the "slab that constitutes the floor on the upper floor" in relation to the slab 30 that constitutes the floor 3 on the second floor, and the slab that constitutes the floor 3 on the second floor. Reference numeral 30 corresponds to "slabs constituting the floor on the lower floor" in relation to the slabs 30 constituting the floor 3 on the third floor.

After installing the slab 30 that constitutes the floor 3 on the third floor, as shown in FIG. 7, the tall outer wall base material 20 is arranged so as to be adjacent to the installation position of the slab 30 that constitutes the floor 3 on the third floor. (S008). More specifically, the tall outer wall base material 20 is arranged at a position directly above the second-stage outer wall 2. At this time, the outer wall base material 20 is arranged so that the decorative surface material 11 is located on the outdoor side of the outer wall base material 20 and is exposed. In the present embodiment, as in the case of constructing the second-stage outer wall 2, after arranging the base material main body in the outer wall base material 20 on the second-stage outer wall 2, as shown in FIG. , The base material upper fragment 20X is placed and fixed on the upper surface of the slab 30 for constructing the floor 3 on the third floor. As a result, the outdoor side end of the slab 30 constituting the floor 3 on the third floor faces the space S in the outer wall base material 20.

After arranging the tall outer wall base material 20, as shown in FIG. 7, the ready-mixed concrete C is placed in the space S in the outer wall base material 20 through the upper end opening of the space S (S009). Further, during the casting period of the ready-mixed concrete C, one end of the separator 17 is fixed by locking the fastener 19a provided at the tip of the separator 17 to the outer frame 12, and the other end is fixed. It is fastened to the inner frame 16 by a fastener 18. As a result, the thickness of the space S is appropriately maintained by the separator 17 while the ready-mixed concrete C is placed.
In the present embodiment, the ready-mixed concrete C is placed in the space S with the outdoor side end of the slab 30 constituting the floor 3 on the third floor facing the space S.

After that, the cast ready-mixed concrete C is hardened to form the concrete layer 14, and the outer wall 2 is constructed together with the tall outer wall base material 20. That is, the concrete layer 14 is integrated with the outer heat insulating layer 13 and the inner heat insulating layer 15 located on both sides of the concrete layer 14 to construct the outer wall 2. Further, in the present embodiment, since the ready-mixed concrete C is placed with the outdoor side end of the slab 30 constituting the floor 3 on the third floor facing the space S, the concrete layer 14 of the outer wall 2 is connected to the slab 30. As a result, the concrete layer 14 in the outer wall 2 is integrated with the floor 3 on the third floor.

After that, for each floor of the fourth floor and above, a step of installing the slab 30 constituting the floor 3 of that floor, a step of arranging the tall outer wall base material 20 at a position adjacent to the slab 30, and a step of arranging the tall outer wall base material 20 in the outer wall base material 20. The step of placing the ready-mixed concrete C in the space S is repeated as described above (S010). Here, on the two floors arranged one above the other, the slab 30 constituting the floor 3 located on the lower floor corresponds to the "slab constituting the floor on the lower floor", and the floor 3 on the floor located higher is designated. The constituent slab 30 corresponds to the "slab constituting the floor on the upper floor".

Then, when the above steps S007 to S009 are repeated as many times as the number of floors of the building B (strictly speaking, the number of floors of the third floor or higher), the slabs 30 constituting the floor 3 are completed on all floors. , The outer wall 2 of the building B is constructed at a position adjacent to the slab 30.

By the way, in the present embodiment, in the step of arranging the outer wall base material 20 (specifically, the steps S005 and S008 of arranging the tall outer wall base material 20), the upper end of the outer wall base material 20 has a length equal to or longer than a preset length. The outer wall base material 20 is arranged so as to be located above the upper surface of the slab 30 adjacent to the outer wall base material 20. Strictly speaking, the outer wall base material 20 is arranged so that the upper end of the outer wall base material 20 is 800 mm or more and is located above the upper surface of the slab 30 adjacent to the outer wall base material 20.

That is, in the present embodiment, the outer wall base material 20 (strictly speaking, the tall outer wall base material 20) is arranged in a state of protruding upward by a predetermined amount (800 mm) or more from the upper surface of the slab 30. Then, in the outer wall base material 20, the portion protruding upward from the upper surface of the slab 30 functions as a fall prevention measure. Specifically, in a situation where the worker is performing interior work or the like on the slab 30 constituting the floor 3 on the second floor or higher, as shown in FIG. 8, the outer wall base material 20 is located near the end position of the slab 30. Have been placed. Further, the outer wall base material 20 projects slightly (specifically, 800 mm or more) upward from the upper surface of the slab 30. Note that FIG. 8 is a diagram showing the positional relationship between the slab 30 and the outer wall base material 20.

In the above situation, the outer wall base material 20 can prevent the operator on the slab 30 from falling from the slab 30. When the outer wall base material 20 projects 800 mm or more upward from the upper surface of the slab 30, the protruding portion may be recognized as a "handrail" under the Industrial Safety and Health Act. In such a case, when the worker works on the slab 30 constituting the floor 3 on the second floor or higher, it is not necessary to separately install a handrail for working at a high place.

Although the method for constructing a multi-storey building of the present invention has been described above with specific examples, the above-described embodiment is merely an example, and other embodiments are also conceivable. For example, in the above-described embodiment, after installing the slab 30 constituting the floor 3 on the second floor or higher, the outer wall base material 20 (strictly speaking, the tall outer wall base material 20) is arranged at a position adjacent to the slab 30. It was decided to. However, the present invention is not limited to this, and the slab 30 of the floor 3 may be installed so as to be adjacent to the outer wall base material 20 after the outer wall base material 20 is arranged.

Further, the outer wall base material 20 according to the above embodiment has a decorative surface material 11, an outer frame 12, an outer heat insulating layer 13, an inner heat insulating layer 15 and an inner frame 16, and further includes a separator 17. did. However, the structure of the outer wall base material 20 is not limited to the above-mentioned structure, and for example, the outer wall base material 20 may include a layer other than the above-mentioned layer.

Further, the outer wall base material 20 (strictly speaking, the tall outer wall base material 20) according to the above embodiment is divided into a base material main body and a base material upper fragment 20X, and the base material upper fragment 20X is a base material. It was decided that it was separated from the main body. However, the present invention is not limited to this, and the outer wall base material 20 may be configured as one unit (one device) instead of being composed of a plurality of separated devices. When such a configuration is adopted, when the outer wall base material 20 is arranged at a position adjacent to the slab 30, the outer wall base material 20 is arranged so that the inner frame 16 is adjacent to the outdoor side end of the slab 30.

1 Building 2 Outer wall 3 Floor 11 Decorative surface material 12 Outer frame 13 Outer heat insulating layer 14 Concrete layer 15 Inner heat insulating layer 16 Inner frame 16a Vertical end thick 16b Horizontal end thick 17 Separator 17a Cone 17b Connecting shaft 18 Fastener 19 Ventilation layer 19a Retaining Attached metal fittings 20 Outer wall base material 20X Base material upper fragment 30 Slab B Building C Ready-mixed concrete (concrete)
S space

Claims (7)

A multi-story building including an outer wall having a concrete layer and an outer heat insulating layer and an inner heat insulating layer sandwiching the concrete layer, and a floor located on the indoor side of the outer wall and adjacent to the outer wall. How to build a building
Install the slabs that make up the floor on the second and higher floors of the building.
An outer wall base material provided with the outer heat insulating layer and the inner heat insulating layer and provided with a space for forming the concrete layer between the outer heat insulating layer and the inner heat insulating layer is adjacent to the installation position of the slab. Arrange to fit and
After arranging the outer wall base material, concrete is poured into the space.
The concrete layer formed by hardening the concrete in the space is integrated with the outer heat insulating layer and the inner heat insulating layer of the outer wall base material to construct the outer wall.
When arranging the outer wall base material, the outer wall base material is arranged so that the upper end of the outer wall base material is located above the upper surface of the slab by a preset length or more. How to build a multi-storey building. When the outer wall base material is arranged so as to be adjacent to the installation position of the slab, the outer wall base material provided with the decorative surface material exposed on the outside of the outer wall outside the outer heat insulating layer is arranged.
When the concrete layer is formed by hardening the concrete in the space, the concrete layer is characterized in that the outer wall is constructed together with the outer heat insulating layer, the inner heat insulating layer and the decorative surface material. The method for constructing a multi-storey building according to item 1. When the outer wall base material is arranged so as to be adjacent to the installation position of the slab, the outer frame adjacent to the outer heat insulating layer on the side opposite to the side where the inner heat insulating layer is located and the outer heat insulating layer are used. The outer wall base material provided with an inner frame adjacent to the inner heat insulating layer on the side opposite to the side where the layer is located and a separator for maintaining the thickness of the space is arranged.
The multi-story building according to claim 1 or 2, wherein concrete is placed in the space while the end portion of the separator penetrating the inner heat insulating layer is fastened to the inner frame. How to build a building. The method for constructing a multi-story building according to any one of claims 1 to 3, wherein when concrete is placed in the space, concrete is placed through the opening at the upper end of the space. .. Install the slab that constitutes the floor on the lower floor, which is the second floor or higher.
The outer wall base material is arranged so as to be adjacent to the installation position of the slab constituting the floor on the lower floor.
Concrete is poured into the space of the outer wall base material arranged so as to be adjacent to the installation position of the slab constituting the floor on the lower floor.
After the concrete placed in the space of the outer wall base material arranged so as to be adjacent to the installation position of the slab constituting the floor on the lower floor is hardened to form the concrete layer, the concrete layer is formed. The slab that constitutes the floor on the upper floor, which is the floor directly above the lower floor, is installed.
The outer wall base material is arranged so as to be adjacent to the installation position of the slab constituting the floor on the upper floor.
Any of claims 1 to 4, wherein concrete is placed in the space of the outer wall base material arranged so as to be adjacent to the installation position of the slab constituting the floor on the upper floor. How to build a multi-storey building as described in paragraph 1. When arranging the outer wall base material, claims 1 to 5 are characterized in that the outer wall base material is arranged so that the upper end of the outer wall base material is 800 mm or more and is located above the upper surface of the slab. The method of constructing a multi-story building described in any one of the above. Claims 1 to 1, wherein when placing concrete in the space, the end of the slab faces the space and the concrete is placed so that the concrete layer is connected to the slab. The method for constructing a multi-story building according to any one of 6.

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