JPS629699B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a newly constructed reinforced concrete structure with a layer of mortar 2 on the outdoor surface of the building frame wall starting from the atmosphere side.
1. Three layers of foamed polystyrene plate 12 and air layer 11 are laminated to provide a composite performance effect of external heat insulation and soundproofing reinforcement.

The present applicant previously filed an application in Japanese Patent Application No. 51,518/1987 for a wall body using a polystyrene plate having concave portions on the front and back surfaces and a hardened layer formed by heat melting in the concave portions.

The present invention is based on the wall body using the polystyrene plate according to the invention of the application, and has invented a double wall structure that can be applied to the wall of a newly constructed reinforced concrete structure.

The structure of the wall structure of the present invention is as follows.

That is, as shown in FIG. 1, recesses 13 and 14 which have a hardened layer s on the inner surface and whose cross-sectional area of the entrance part a is smaller than the cross-sectional area of the deep part b are formed on the front and back surfaces 28 and 29 of the foamed polystyrene plate 12. A non-combustible mesh material 17 is provided only on one side 28 of the outdoor side of the polystyrene plate 12, and reinforcing wires 18 and 19 are orthogonally intersected in parallel planes with a small interval therebetween. Stretch the assembly. and non-combustible mesh material 1
4. Layer the cement mortar layer 21 through the eighth wires 18 and 19 and fill the recess 14.
An air layer 11 is formed between the indoor side surface 29 of the expanded polystyrene plate 12 anchored to the outdoor side of the reinforced concrete structural frame wall 1 and the structural frame wall 1. Vent holes 36 and 35 are provided at the top and bottom of the air layer 11. (Figure 7b) Thermal insulation method includes internal wall insulation,
There are two methods: one is to install the insulation on only one of the inner and outer surfaces of a single wall, such as external wall insulation, and the other is to install a heat insulation layer in the middle of a double wall.The present invention belongs to the latter method.

In the case of single-wall type external wall insulation, it is exposed directly and indirectly to sunlight, outside air, rain and snow, and is most susceptible to aging phenomena. Particularly in Japan, where there is a lot of rain and humidity, the mixing of dry and wet conditions causes expansion and contraction, which leads to the formation of cracks and gaps, and a decrease in insulation resistance due to the heat bridge phenomenon.

In the case of single-wall type wall insulation, expansion and contraction due to the mixture of dry and wet due to temperature, humidity, and ventilation, corrosion due to the growth of bacteria, and a decrease in insulation resistance due to the heat bridge phenomenon due to the formation of gaps and cracks occur on the outside of the wall. It's no different from heat protection.

Also, under the influence of temperature, humidity, ventilation, and ventilation, water vapor in the air moves from the high temperature side to the low temperature side, condensation → dew condensation → dripping → freezing → snow formation → expansion, resulting in mechanical pressure in the finishing material and heat insulation material. Since the structural frame wall is a rigid concrete body, the direction of pressure is ultimately directed towards the strongest insulation material and exterior material, and the additional insulation exterior material collapses, the same for both external and internal insulation methods. It is.

In order to eliminate the above drawbacks, the present invention has the following configurations added as a double wall type.

○B In order to first block water vapor from passing through the wall (increase in moisture permeation resistance), an adhesive waterproofing material 2 (for example, asphalt-based NALFAULT) is applied to the outdoor side surface 30 of the structural frame wall 1 to form a moisture-proof layer. .

○B Furthermore, vents 35 and 36 that can adjust the amount of ventilation are provided in the air layer 11 at the top and bottom of the wall, making it possible to remove high humidity inside the wall. (Fig. 7b) ○C Polystyrene plate 12, which has a low moisture absorption rate and high water vapor barrier properties, is used as the insulation material, and by increasing its thickness, it is possible to prevent water vapor from entering the inside of the wall and prevent water vapor from entering inside the wall. Removes high humidity.

○D Note that by inserting glass wool 34 into the air layer 11, the sound absorption effect can be further improved.

As shown in FIG. 8, after screwing in the male threaded part 4 of the seperated vault 3 with the joint high nut 5, the indoor side male threaded part 33 of the fixing bolt 31 is screwed in.
A square washer nut 8 and a glass wool tightening nut 32 are screwed into the male threaded portion 33 in advance. The glass wool 34 is penetrated by the male thread part 33 between the glass wool tightening nuts 32, 32, and the nuts 32, 32 tighten and fix the glass wool 34.

One nut 32 cooperates with the nut 16 at the end on the indoor side to fasten and fix the polystyrene plate 12.

As described above, the newly constructed reinforced concrete structural wall of the present invention has a double wall formed of the structural frame wall 1 and the cement mortar layer 21 containing the noncombustible mesh material 7 and the reinforcing wires 18 and 19.

A moisture-proof layer 2 consisting of a foamed polystyrene plate 12, an air layer 11, and a waterproofing agent is provided between the cement mortar layer 21 and the structural frame wall 1, and ventilation holes 35 and 36 are provided in the air layer 11. This is the gist of the structure.

The symbols shown in the drawings other than those described above will be explained as follows.

7: The indoor male thread of the bolt 6 for fixing to the frame wall 1 is fastened to the rectangular washer nut 8.

9: As shown in FIG. 1, this is a washer nut for tightening the indoor male thread of the fixed mounting bolt 6.

10: This is a nail for anchoring concrete that fixes the square washer nut 8 to the frame wall 1 as shown in FIG.

15: As shown in Fig. 1, reinforcement wire No. 8 19,1
This is a through-tightening medium-height nut for fixing 8.

20: Attach the first indoor male thread of the fixed mounting bolt 6.
As shown in the figure, the noncombustible mesh material 17 is fixed with washer nuts 15 and 16.

22: As shown in FIG. 1, a surface finishing material; 23: The outdoor protruding end of the fixing bolt 6 has an acute angle weight and is made to have an acute angle to facilitate insertion into the washer nuts 15 and 16.

24: Cement mortar to be filled into the bolt mounting holes. (Fig. 1) 25: Insert the anchoring concrete nail 10 through the nail hole of the square washer nut 8. (Fig. 1) 26: As shown in Fig. 6, this is an elastic spring washer for preventing the spiral nail 27 from reversing.

(Construction method of the present invention) Next, the construction method of the present invention will be explained.

As shown in FIG. 2, when the concrete pouring of the newly constructed reinforced concrete outer peripheral structure frame wall 1 is completed and the required hardening period has elapsed, the separator bolts 3 are left buried. Using the male thread 4 of the exposed end of the separator bolt 3 as a basic anchoring material, installation is carried out in the following order as shown in FIG.

Paint 2 (for example, asphalt-based NALFAULT), which is an adhesive waterproofing agent, is applied to the inner surface of the bolt mounting hole and the entire wall surface of the structural frame wall 1.

A high coupling nut 5 is screwed into the exposed end male thread 4 of the separator bolt 3 and anchored.

The bolt mounting holes are filled with cement mortar 24 containing a 1:1 mixture of cement and sand.

After screwing the washer nut 9 for anchor tightening into the male thread 7 on the indoor side of the fixed mounting bolt 6, screw the square washer 8 for reinforcing the anchorage, and then screw the fixed mounting bolt into the upper half of the female thread of the high coupling nut 5. Screw in the male screw 7 of 6 and tighten with the tightening washer 9.

Anchor reinforcement square washer 8 with concrete nail 10
Anchor at. (See Figure 3) 25 is a nail hole.

The fixing bolt 6 is pressed and penetrated through the heat insulating foam plastic plate 12.

The foamed plastic plate 12 is tightened and anchored using a hexagonal washer nut 16 for tightening and fixing.

Insert the noncombustible mesh material 17 through the acute pyramid 23 on the outdoor side of the fixing bolt 6, and stretch it on the outdoor side surface 28 of the expanded polystyrene plate 12.
It is anchored at the position shown in FIG. 6 using a directly driven spiral nail 27.

In order to drive the direct-drive helical nail 27 into the polystyrene plate 12, the peripheral protrusion 26a of the spring washer 26 for preventing reverse rotation is driven in advance into the position where the mesh wire of the noncombustible mesh material 17 on the polystyrene plate 12 will be locked. The noncombustible mesh material 17 is lightly pressed onto the polystyrene plate 12. After that, if the directly driven spiral nail 27 is inserted into the long hole of the spring washer 26 and driven in the vertical direction, the spiral nail 27 will be attached to the polystyrene plate 1.
The spring washer 26 is driven into the polystyrene plate 12 while automatically rotating using the elongated hole of the spring washer 26 fixed to the polystyrene plate 12 as a guide.
This leads to the tightening and locking.

At the same time, the non-combustible net material 17 is tightened and anchored with the medium-high nut 15, and at the same time, the reinforcing No. 8 wires 18 and 19 are attached and anchored through the medium-high nut 15. (4th
(See Figure 5) Reinforcing No. 8 wires 18, 19 and noncombustible mesh material 1
At the same time, the mortar 21 is laminated on the outdoor side surface 28 of the expanded polystyrene plate 12 through the recess 1.
Also fill in 4.

A surface finishing material 22 is applied or sprayed.

Ventilation holes 36 and 35 for controlling the ventilation of the air space 11 are provided at the lower part of the new reinforced concrete structure frame wall 1, the foamed polystyrene plate 12 for heat insulation, and the upper part of the mortar layer 21. (Fig. 7b) The supporting force of the mortar layer 21 is determined by the fixed mounting bolt 6.
The supporting force is increased by increasing the number of bolts 6 and by increasing the number of reinforcing wires 18 and 19.

Effects of the present invention: A continuous smooth plane can be formed on the outdoor side of the new reinforced concrete structural wall 1.

The mortar layer 21 bites into the recess 14 of the polystyrene plate 12 and generates a pulling resistance force;
In addition, the noncombustible mesh material 1 that holds the mortar layer 21
7 is securely held on the polystyrene plate 12 by direct-drive spiral nails 27, the cement mortar layer 21 is held by reinforcing wires 18 and 19, and non-combustible material is removed from the structural frame wall 1. By transmitting the basic support force to the reinforcing wires 18 and 19 of the net-like material 17 through the fixing bolts 6, a seamless continuous smooth plane can be firmly formed. Therefore, there is no heat bridge phenomenon, and the construction of the secondary wall integrally connected to the double wall type structural frame wall 1 can be easily and reliably performed.

The non-combustible net material 17 is made of polystyrene plate 12 in advance.
It can be transported to the site after being installed.

For example, when the height of the wall is high, the noncombustible mesh material 17 is attached to the polystyrene plate 12 in advance at the factory using direct-drive spiral nails 27 with elastic spring washers 26 for preventing reverse rotation, rather than on-site construction. The polystyrene plate 12 and the noncombustible mesh material 17 are integrated. This noncombustible mesh material 17
If the polystyrene plate 12 integrated with the polystyrene plate 12 is brought to the site, the noncombustible mesh material 17 and the polystyrene plate 12 can be inserted and penetrated into the fixing bolt 6 while being integrated at the site.

Therefore, in the case of vertical work with high scaffolding that is difficult to tension, the work of tensioning the noncombustible mesh material 17 does not have to be carried out on site, which is safe and efficient.

High heat insulation performance The present invention has a foamed polystyrene plate 12 and an air layer 11 for heat insulation between the double wall of the structural frame wall 1 and the mortar layer 21, and has high heat insulation performance.
Furthermore, by increasing the thickness of the polystyrene plate 12, the heat insulation properties can be freely increased.

As described above, it has good temperature control performance and appropriate temperature maintenance performance, has little heat loss during heating and cooling, is suitable for protection against heat and cold, has a low room temperature fluctuation rate, and does not cause hot flashes, which are residual heat phenomena.

Regarding fire protection performance, in the event of a fire, cement mortar 2
Due to the non-combustibility of 1,1, the self-extinguishing property of polystyrene foam 12, and the flame retardancy of (JIS-A-9511), the high temperature is not transmitted to the side opposite to the side where the fire occurred, and it resists heating action.

Furthermore, the polystyrene plate 12 melts and contracts by itself in response to high-temperature heating caused by a fire, forming a space between the cement mortar layer 21 containing the non-combustible mesh material 17 on both sides and the structural frame wall 1, and this space becomes a secondary A thermal insulation layer, a hollow air layer resulting from melting and shrinkage, occurs naturally.

In this way, the heat resistance of the cement mortar layer 21 and the structural frame wall 1, and the
The polystyrene plate 12 is bonded to the structural frame wall 1 to maintain its original shape and maintain its sealing properties.
Prevent the spillage and ignition of fires, and prevent the spread and expansion of fires. After the fire ends, as long as the cement mortar layer 21 does not undergo thermal deterioration, the secondary air insulation layer maintains a heat insulating performance comparable to that of the polystyrene board 12, so there is no need to remove and repair the cement mortar layer 21. do not have.

Moisture-proof performance Asphalt-based adhesive waterproofing material (for example, NALFAULT) 2 is applied to the outdoor surface 30 of the structural frame wall 1.
By coating the foamed polystyrene plate 12, the outdoor surface finishing material 22, and the cement mortar 21 with a seamless continuous surface, the movement of water vapor from the indoor surface is blocked, and the movement of water vapor from the outdoor surface is prevented.
It is blocked by the stack of layers.

Effects of Vent Holes 35, 36 In the present invention, vent holes 35, 36 for ventilation in the air layer 11 are provided in the lower part of the structural frame wall 1, and in the upper part of the polystyrene plate 12 and the cement mortar layer 21.

This prevents dew condensation from occurring within the double-walled body, and therefore prevents dripping, freezing, and snow from forming within the air layer 11 inside the double-walled body. There was no crushing on either side.

Soundproofing performance The material of the polystyrene board 12 itself, the indoor recess 13 of the polystyrene board 12 has sound absorbing properties, and the air layer 11 is composed of a composite surface material of the cement mortar layer 21 and the expanded polystyrene board 12, and the structural frame wall 1. softens the structural bond and increases the sound insulation effect.

In order to further improve the soundproofing performance of the wall structure of the present invention, if glass wool 34 is inserted into the portion corresponding to the air layer 11 as shown in FIG. Becomes body structure. Additionally, glass wool also exhibits a heat-insulating effect. Moreover, if the thickness of the air layer 11 is made large, the low sound absorption efficiency increases, and if the thickness is made small, the high sound absorption efficiency is improved.

Further, the polystyrene plate 12 with large concave portions 13 has good low sound absorption, and the small concave portion 13 has good high sound absorption. Furthermore, the irregular arrangement of the recesses 13 is good for wide sound absorption.

As described above, various combinations of soundproofing elements enable various soundproofing measures.

In the embodiment described above, the case where the construction method of the present invention is carried out using the separator bolts 3 remaining in newly constructed reinforced concrete walls has been described, but when the construction method of the present invention is applied to an existing reinforced concrete wall, it is carried out as follows.

That is, a hole may be made in the existing reinforced concrete wall with a drill, and a conventional commercially available anchoring fitting may be inserted and fixed into the drilled hole to provide the same function as the separator bolt 3.

[Brief explanation of the drawing]

Figure 1: Front sectional view of the wall structure of the present invention, Figure 2:
Front sectional view of the structural frame wall, FIG. 3a: A plan view of the anchor reinforcing washer 8, FIG. 3b: A sectional view taken along bb of FIG. 3a, FIG. 4: A front view of the fixing bolt 6 , Fig. 5a: Plan view of the medium-high tightening nut 15, Fig. 5b:
Partially cutaway sectional view of FIG. 5a, FIG. 6: sectional view of cement mortar layer 21 and polystyrene plate 12,
Figure a: A front view of the wall structure of the present invention before the mortar layer 21 is laminated as seen from the indoor side, Figure 7 b: A sectional view of Figure 7 a, Figure 8: Glass wool 34 inserted into the air layer 11. Cross-sectional view at the time, 1...Newly constructed reinforced concrete outer structure frame wall,
2...Adhesive waterproofing agent, 3...Sepabolt, 4...
Exposed end male thread of separator bolt 3, 5... High nut for joint, 6... Bolt for fixing to concrete frame, 7... Indoor male thread of fixing bolt 6, 8... Square washer for anchor reinforcement, 9... Washer nut, 10... Nail for anchoring concrete (drive into washer 8), 11... Air layer, 12... Polystyrene foam plate, 13... Indoor side recess (of polystyrene plate 12), 14... Outdoor side recess (of polystyrene plate 12), 15... Penetration fastening medium height nut, 16...
... Hexagonal washer nut for tightening and fixing, 17 ... Noncombustible mesh material, 18 ... No. 8 reinforcing wire, 19 ... No. 8 reinforcing wire, 20 ... Male thread part (outdoor side of fixing bolt 6), 21 ... Mortar layer, 22...Surface finishing material, 23...Acute pyramid at the outdoor side tip of the fixed mounting bolt 6, 24...Cement mortar to be filled in the bolt mounting hole, 25...Nail hole (nail n), 26 ……
Elastic spring washer for preventing reverse rotation, 27... Direct-drive spiral nail, 28... Outdoor side surface of polystyrene plate 12, 2
9... Indoor side surface of polystyrene plate 12, 30...
Outdoor side surface of the frame wall 1, 31... Fixed mounting bolt (for glass wool installation), 32... Glass wool tightening nut, 33... Male thread part (bolt 31)
), 34...Glass wool, 35...Vent hole,
36...Vent, s...Hardened layer.

Claims (1)

[Scope of Claims] 1. A fixed mounting bolt 6 is integrally coupled to a separation bolt 3 of a newly constructed reinforced concrete outer peripheral structure wall 1 whose surface is coated with waterproofing paint 2, and a fixed mounting bolt 6 is provided with a bolt for tightening reinforcement. The washer 8, the polystyrene foam plate 12, the non-combustible mesh material 17, and the reinforcing No. 8 wires 18, 19 are inserted through the through-tightening medium-high nuts 15, and the front and back surfaces of the polystyrene foam plate 12 are Recesses 13 and 14 with a hardened layer s formed thereon are recessed, and the cement mortar layer 21 is passed through the noncombustible mesh material 17 and reinforcing wires 18 and 19 into the recess 14 of the polystyrene plate 12. Furthermore, an air layer 11 is formed by inserting the fastening reinforcing washer 8 between the expanded polystyrene plate 12 and the new reinforced concrete outer peripheral structure wall 1. and this air layer 11 is communicated with the outside air through vents 35 and 36.This external heat insulation and sound insulation reinforced structure for a newly constructed reinforced concrete outer peripheral wall body is characterized in that: 2. After applying waterproofing paint 2 to the new reinforced concrete outer peripheral structure wall 1, fixing bolts 6 are integrally connected to the separation bolts 3, and tightening is performed to form an air layer 11 on the fixing bolts 6. Reinforcement washer 8, recesses 13 and 1 on the front and back sides
A polystyrene foam plate 12 having a polystyrene foam 12, a noncombustible mesh material 17, and a medium-high through-tightening nut 15 are sequentially inserted and tightened, and at this time, a material for reinforcing the fastening is inserted between the polystyrene foam plate 12 and the reinforced concrete outer peripheral structure wall 1. By inserting the washer 8, an air layer 11 communicating with the outside air is formed.Next, reinforcing wires 18 and 19 are inserted into the through-tightening medium-high nut 15, and then a cement mortar layer 21 is inserted. The reinforcing wires 18, 19 and the non-combustible mesh material 17 are layered, and finally the surface finishing material 22 is applied to the cement mortar layer 2.
1. A method for constructing an external heat insulation and sound insulation reinforced structure for a newly constructed reinforced concrete peripheral wall body, characterized by: 3. The construction method according to claim 2, in which the non-combustible mesh material 17 is anchored to the polystyrene plate 12 with a direct-drive spiral nail 27 driven from an elastic spring washer 26 for preventing reverse rotation.