JP2003221942A - Earthquake resisting slit material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an earthquake resisting slit material which facilitates execution work therefor, and can impart fire resisting performance thereto without degrading the strength of a core member. <P>SOLUTION: The earthquake resisting slit material is formed of the plate-like core member 13 which is arranged between forms erected in a mutually facing manner in order to construct a section near a joint portion, a pair of fixing members 23, 24 fixed to the respective forms, and a pair of support members 14, 15 having their inner ends fitted to respective side edges of the core member 13 and their outer ends fitted into the respective fixing members 23, 24. According to the slit material, at least one 15 of the support members 14, 15 has a non-combustible material 27 arranged therein. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake-resistant slit material which is buried near a joint between a wall of a concrete building and a column connected to the wall so as to penetrate the wall.

[0002]

2. Description of the Related Art Conventionally, when an earthquake occurs when a seismic slit material is buried near a joint between a waist wall or a hanging wall of a reinforced concrete structure and a column connected to the wall so as to penetrate the wall. In addition, there is known a technique in which the earthquake-proof slit material functions as a cushioning material and the wall is separated from the pillar to avoid shear failure and brittle failure of the pillar. The burying of the earthquake-resistant slit material near the joint is performed by disposing the earthquake-resistant slit material between the molds that are erected to face each other in order to construct the vicinity of the joint, and fix it to the mold. Then, concrete is placed between the molds, the concrete is cured for a predetermined time, and then the molds are removed. When a foam synthetic resin is used as the core material of this earthquake-resistant slit material, in order to enable the core material to function as a weir plate without being displaced or washed away by the pressure of the poured concrete, for example, In Japanese Utility Model Publication No. 59-175545,
A technique is disclosed in which a support arm protruding along the axial direction of a wall is provided on one surface of a core material, and a tip of the support arm is attached to a separator inserted between molds. In addition, JP-A-1
Japanese Patent Laid-Open No. 0-18640 discloses a fitting structure between a core material reinforced by bonding paper or the like on both sides of a foamed synthetic resin and a support material for supporting the core material, and between the support material and a mold. A technique has been disclosed in which the core material is firmly fixed between the molds by connecting them without using a member such as the support arm.

However, with the above-mentioned slit material for earthquake resistance, when a wall surface is exposed to flame or high heat due to a fire or the like in the vicinity, there is a fear that the interior of the slit material is exposed to high temperature through the slit material. In order to prevent this, as a method of imparting fire resistance to the earthquake-resistant slit material, a method of using a ceramic fiber plate that is a non-combustible material as the core material of the slit material, or a foamed synthetic resin as the core material There is a method of sandwiching a ceramic fiber plate at the center of the plate.

[0004]

However, as a method for imparting fireproof performance to the earthquake-resistant slit material disclosed in the above-mentioned Japanese Patent Laid-Open No. 10-18640, a nonflammable material is used as a core material of a conventional slit material. When using a method of using a ceramic fiber plate as a material or a method of sandwiching a ceramic fiber plate in the center of a foamed synthetic resin as a core material, not only the construction work becomes difficult, but also the core Since the ceramic fiber plate is used for all or part of the material, the strength of the core material is insufficient and the core material is greatly deformed by the pressure during concrete pouring, and it is displaced or washed away The function as a board cannot be exhibited.

In view of the above circumstances, it is an object of the present invention to provide a seismic-resistant slit material which is simple in construction work and has fire resistance performance without lowering the strength of the core material. .

[0006]

DISCLOSURE OF THE INVENTION The present invention is a seismic-resistant slit material embedded in a wall of a concrete building in the vicinity of a joint between a wall and a column connected to the wall so as to penetrate the wall.
A plate-shaped core member disposed between molds that are erected to face each other to construct the vicinity of the joint, a pair of fixing members fixed to the mold, and an inner end of the core member. Of a pair of supporting members fitted to the respective side ends of the pair and having outer ends fitted to the fixing member, and at least one supporting member of the pair of supporting members is provided with a nonflammable member. Is characterized by.

The seismic-resistant slit material of the present invention is constructed such that a supporting material (whether or not a concave fitting portion is provided) is fixed to one of the molds and then the mold is erected, or the erected mold is erected. Fix the support,
Then, the side end of the core material is fitted to the support material, and the support material with the concave fitting portion is fitted to the other end of the core material. Then, the fixing member is fixed to the other mold, and the fixing member is fitted to the concave fitting portion of the support member while standing the mold frame, or the fixing member is fitted to the concave fitting portion of the support member. Then, the other mold is erected and the fixing member is fixed to this mold. In that case, since both ends of the core material are fitted to the support material and at least one of the support materials is fixed to the formwork by the fitting structure, the core material does not move in the direction of penetrating the wall but is parallel to the wall. The movement of the seismic slit material is restrained from moving in any direction, and the seismic resistant slit material is not displaced or washed away by the pressure of the cast concrete, and functions well as a dam plate. Since the core material is a material having a cushioning function,
It functions well as a cushioning material during an earthquake. In addition, since the non-combustible member is inserted or laminated in the support material, for example, even if a fire occurs in the vicinity and the wall surface is exposed to flames or high heat, the indoor space is exposed to abnormally high temperature through the slit material. Never be Further, since the fitting structure is used, the work for fixing the earthquake-proof slit material is easy. Further, since the reinforcing material is not separately provided for the core material, the cost is reduced. Furthermore, since the fixing member can be repeatedly used by being diverted, it contributes to cost reduction. Further, since the supporting material remains in the concrete even if the form is removed, it is not necessary to carry out a post-treatment such as filling the joint with a backup member or a coating material.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, examples of the material having a cushioning function used for the core material include a foamed synthetic resin plate and a synthetic resin plate having a hollow portion.

Examples of the foamed synthetic resin plate include plate-like members such as expanded polystyrene, expanded polyethylene, expanded polypropylene and expanded polyurethane, but are not limited to these. The core material reinforced with foamed synthetic resin on both sides or one side with paper or hard synthetic resin plate, etc., the mounting posture of the slit material may be bent or skipped when a large concrete pressure is applied during concrete pouring. It is more preferable because it does not exist. A core material with both sides of foamed synthetic resin reinforced with paper requires a special cutting machine when attaching a tuna bar to the core material or when cutting the core material according to the wall thickness and height on site. It is not necessary and can be easily adjusted with, for example, a knife or a saw, and the work is easy. Examples of the paper include liner paper having a basis weight of 200 to 400 g / m ² . Further, the reinforcing layer may be formed by molding with a small foaming rate near the surface of the core material, or a composite of the above paper and a film such as polyethylene may be used to improve water resistance.

In the present invention, examples of the material used for the support material include thermoplastic resins such as hard vinyl chloride resin, polyolefin resin or ABS resin, thermosetting resins such as unsaturated polyester resin, and metals. However, the present invention is not limited to these. A support material made of a synthetic resin is preferable because it does not require a special cutting machine to cut the support material according to the wall height at the site and the work is easy.

As the material of the non-combustible member used in the present invention, ceramic fiber, rock wool, light slab, mortar, concrete, metal or the like is used. Of these, it is supported on site according to the wall height. It is preferable to use ceramic fiber or rock wool which does not require a special cutting machine in the work of cutting the material. On the other hand, metal or concrete has a great effect of increasing the strength when the support material is a synthetic resin, and is particularly preferable when a large pressure of concrete acts on the support material. Further, as the shape of the non-combustible member, a plate-shaped body having a rectangular cross section, a substantially U-shaped cross section, or a substantially R-shaped cross section can be used, but a plate having a rectangular cross section or a substantially U-shaped cross section is processed. It is preferable to use a body. The thickness of the non-combustible member is usually about 30 to 5 mm in the case of ceramic fiber or rock wool, but it is preferably 25 to 7 mm in view of cost and fire resistance, and is made of metal. In the case of a plate, usually 2 to 0.1 mm
Although it is a degree, it is 1.5-0.
It is preferably 2 mm.

The non-combustible member is inserted into, for example, a cavity formed in the support material, or laminated on the inner end surface (the surface on the core material side) of the support material by using an adhesive, but the buffer is used. The core material made of a material having a function is attached to both or one of the support materials fitted and fixed to both ends. For example, compared to a method of using a non-combustible material instead of a core material made of a foamed synthetic resin or sandwiching a non-combustible material between plate-shaped bodies made of a foamed synthetic resin, the present invention provides a non-combustible member. Since it is attached to the support material, the installation work of the slit material is very easy, and the seismic resistant slit material may be displaced or washed away due to insufficient strength of the core material due to the pressure of the placing concrete. Without
It functions well as a barrier plate. By integrally forming this support material with the core material by adhesion, the strength is increased and the handling is improved.

The earthquake-proof slit material of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, a seismic-resistant slit material 1 according to one embodiment, which is fixed to a formwork before pouring concrete, is provided on a concrete building wall 2 and the wall 2. It is embedded near the joint 4 with the continuous column 3 so as to penetrate the wall 2. In FIG. 1, 5 to 7 are molds that are erected so as to face each other in order to construct the vicinity of the joint portion 4, and 11 is a reinforcing splint fixed along the periphery of the molds 6 to 7. is there.

The earthquake-proof slit material 1 includes a plate-shaped core member 13 arranged between the molds 5 and 6 and a pair of support members 14 and 15 for supporting the core member 13. The core material 13 is formed of an expanded polystyrene plate formed by an extrusion method, and liner papers 16 and 16 having a basis weight of 300 g / m 2 are attached to both surfaces of the core material 13 as reinforcing layers against tension. The core 13 has a cross-sectional shape shown in FIG. 1 and extends substantially from the lower end (for example, near the floor surface) of the wall 2 to the upper end (for example, near the ceiling).

The support materials 14 and 15 of this embodiment are manufactured by extrusion molding of hard vinyl chloride resin. As shown in FIG. 1, groove portions 17 and 18 having a substantially U-shaped cross section are formed at the inner ends thereof, and the respective side ends of the core material 13 are fitted therein. In this embodiment, the tip ends of the side walls of the groove portions 17 and 18 are raised to the side, and the bur 1 for stopping water is used.
Although 9 and 20 are formed, the burrs 19 and 20 can be omitted. If the fitting portions of the core material 13 and the support materials 14 and 15 are fixed with an adhesive or the like and they are integrated, the risk of the core material and the support material coming off due to pressure during concrete pouring can be further reduced. Further, concave fitting portions 21 and 22 are formed on the outer ends of the support members 14 and 15. Then, in the concave fitting portion 21 of the support material 14 on the side of the outer form 5, a substantially trapezoidal fixing member 23 manufactured by extrusion molding of foamed vinyl chloride resin.
The needle N penetrates the bottom of the fixing member 23, and the nail N is driven into the outer frame 5 through the concave fitting portion 21. The concave fitting portion 22 of the support member 15 on the side of the inner mold 6
A plate-shaped fixing member 24 manufactured by extrusion molding of a hard vinyl chloride resin is fitted in, and the fixing member 24 is fixed by driving a nail N penetrating in the thickness direction thereof into the pier 11.

Cavities 25 and 26 are provided inside the support members 14 and 15, and a nonflammable member 27 is inserted therein. In the present embodiment, a plate body having a thickness H of 10 mm, which is formed of a ceramic fiber that is the noncombustible member 27, is inserted only in the cavity portion 26.

The support material 15 is made of an elastic sealing material such as butyl rubber so that rainwater does not enter from the outside through the boundary surface between the support material body and the concrete after the formwork and the splint are removed after the concrete is poured. It can be laminated as a water blocking material. Further, in order to improve the appearance of the exposed portion after the formwork and the splint are removed after the concrete is placed, the exposed portion can be painted with paint or the like. Further, in order to enhance the adhesion between the support material and the water blocking material or the coating material, the required portion of the support material can be coated with a soft vinyl chloride resin by coextrusion or the like. In the present embodiment, the side surfaces 14a of the support members 14 and 15 are
Butyl rubber 28, which is a waterproof material, is attached to 15a,
A soft vinyl chloride resin 2 is formed on the surface of the concave fitting portion 21 of the support member 14.
9 are laminated by coextrusion. Also, the support material 1
Similar to the core member 13, the fixing members 4 and 15 and the fixing members 23 and 24 extend from the lower end to the upper end of the wall 2 with the sectional shape shown in FIG.

Next, a procedure for fixing the seismic resistant slit material 1 to the mold will be described. First, the fixing member 23 is sandwiched between the outer formwork 5 and fixed by the nail N, and then the outer formwork 5 is erected, or the support member 14 and the fixing member 23 are sandwiched between the erected outer formwork 5 and the nail is formed. After fixing with N, the side end of the core material 13 is fitted in the groove portion 17 of the support material 14, and the groove portion 18 of the support material 15 is fitted in the other end of the core material 13. Then, the fixing member 24 is fixed to the pier 11 of the inner mold frame 7 with the nail N, and the fixing member 24 is fitted into the recessed fitting portion 22 of the support member 15 while the inner mold frame 7 is being erected, or the fixing member is fixed. 24 is the concave fitting portion 22 of the support member 15.
Then, the inner formwork 8 is erected, and the fixing member 24 is fixed to the crosspiece 11 of the inner formwork 8 with the nail N. As a result, the state shown in FIG. 1 is reached, and the fixing work is completed. In this state, concrete is poured into the molds 5-7, the concrete is cured for a predetermined time, and then the molds 5-7 are removed. As shown in FIG. 2, the joint 4 is constructed together with the wall 2 and the pillar 3. To be done.
In this case, when removing the formwork 5-6, the fixing members 23, 2
4 is pulled out from the concave fitting portions 21 and 22 of the support members 14 and 15.

Therefore, in the present embodiment, the core material 13
Is a support member 14 in which both side ends are fitted to the support members 14 and 15, and the non-combustible member is not inserted into the internal cavity, and the support member 1 in which the non-combustible member 27 is inserted into the internal cavity 26.
Since 5 is fixed to the mold by the nail N and the fitting structure,
Not only the movement in the K1 direction passing through the wall 2 but also the movement in the K2 direction parallel to the wall 2 is restrained, and it is not displaced or washed away by the pressure of the cast concrete, which is a good dam plate. To function. Further, since the core material 13 is a foamed synthetic resin, it also functions well as a cushioning material during an earthquake. Further, since the fitting structure is utilized, the work of fixing the earthquake-proof slit material 1 is easy. Moreover, since the core material 13 is a foamed synthetic resin whose both sides are reinforced with paper, as shown by the phantom line in FIG. 1, the thigh streak S can easily penetrate this. Moreover, since a reinforcing material such as a separator is not separately provided for the core material 13, the cost is also reduced. Further, the fixing members 23 and 24 can be repeatedly used by being diverted, which contributes to cost reduction. Also, the formwork 5
Since the support materials 14 and 15 remain in the concrete even after removing ~ 7, there is no need to perform a post-treatment such as filling a joint with a backup member or a caulking material as in the conventional case, but the post-treatment may be performed. .

Further, the core material is not hard and is not a brittle noncombustible material, and the brittle noncombustible material is not sandwiched in the central part of the core material. Reinforcing layer liner 1
Since the cores 6 and 16 are provided, the core material 13 does not deform so much even when receiving the pressure of the cast concrete, and it functions well as a dam plate, and can easily penetrate the thighs.

Further, as shown in FIG. 3, the slit addition material 30 may be attached to one side or both sides of the core material 13. By doing this, the thickness of the core material 13 can be adjusted substantially by adjusting the thickness of the slit-applying material 30 to be pasted, and the cushioning function of the core material 13 can be adjusted according to the construction site. it can. As the slit addition material, a foamed synthetic resin similar to the core material may be used, but about 3% from the viewpoint that it can easily follow expansion and contraction and deformation of concrete due to temperature changes and earthquakes.
It is preferable to use soft urethane foam, expanded polystyrene, or the like having a foaming ratio of about 0 times. These are attached to the core material with, for example, an adhesive or a double-sided tape.

Next, another embodiment of the present invention will be described.

As shown in FIGS. 4 to 5, the earthquake-resistant slit material 1a fixed to the formwork before pouring concrete is
It is embedded in the vicinity of a joint 4 between a wall 2 of a concrete building and a pillar 3 connected to the wall 2 so as to penetrate the wall 2. In FIG. 5, 5 to 9 are molds that are erected so as to face each other in order to construct the vicinity of the joint portion 4, and 10 to 12 are reinforcing molds fixed along the periphery of the molds 5 to 9. It is a pier.

The earthquake-proof slit material 1a is made up of the molds 5-8.
And a plate-shaped core member 13 arranged between
Is provided with a pair of support members 14 and 15. The core material 13 is formed of an expanded polystyrene plate formed by an extrusion method, and liner papers 16 and 16 having a basis weight of 300 g / m ² are stuck on both surfaces of the core material 13 as reinforcing layers against tension. The core material 13 extends substantially from the lower end (for example, near the floor surface) of the wall 2 to the upper end (for example, near the ceiling) with the sectional shape shown in FIG.

The support materials 14 and 15 of this embodiment are manufactured by extrusion molding of hard vinyl chloride resin. As shown in FIG. 4, groove portions 17, 18 having a substantially U-shaped cross section are formed at the inner end thereof, and the respective side ends of the core material 13 are fitted therein. The tip ends of the side walls of the groove portions 17 and 18 rise laterally to form burrs 19 and 20 for stopping water. If the fitting portions of the core material 13 and the support materials 14 and 15 are fixed with an adhesive or the like and they are integrated, the risk of the core material and the support material coming off due to pressure during concrete pouring can be further reduced. Further, the concave fitting portion 2 is provided on the outer ends of the support members 14 and 15.
1, 22 are formed. Then, a substantially trapezoidal fixing member 23 manufactured by extrusion molding of vinyl chloride resin is fitted into the concave fitting portion 21 of the support material 14 on the side of the outer molds 5 and 6, and the fixing member 23 is A nail (not shown) that penetrates in the thickness direction of the side piece 23a is driven into the pier 10. In the concave fitting portion 22 of the support material 15 on the inner formwork 7 side,
A plate-shaped fixing member 24 manufactured by extrusion molding of hard vinyl chloride resin is fitted, and the fixing member 24 is fixed by driving a nail (not shown) penetrating in the thickness direction thereof into the pier 11. .

Cavities 25 and 26 are provided inside the supporting members 14 and 15, and a nonflammable member 27 is inserted therein. In the present embodiment, a plate body having a thickness H of 10 mm, which is formed of a ceramic fiber that is the noncombustible member 27, is inserted only in the cavity portion 26.

The supporting material 15 is made of an elastic sealing material such as butyl rubber so that rainwater does not enter from the outside through the boundary surface between the supporting material main body and the concrete after the formwork and the splint are removed after the concrete is poured. It can be laminated as a water blocking material. Further, in order to improve the appearance of the exposed portion after the formwork and the splint are removed after the concrete is placed, the exposed portion can be painted with paint or the like. Further, in order to enhance the adhesion between the support material and the water blocking material or the coating material, the required portion of the support material can be coated with a soft vinyl chloride resin by coextrusion or the like. In the present embodiment, the side surfaces 14a of the support members 14 and 15 are
Butyl rubber 28, which is a waterproof material, is attached to 15a,
A soft vinyl chloride resin 2 is formed on the surface of the concave fitting portion 21 of the support member 14.
9 are laminated by coextrusion. Also, the support material 1
Similar to the core member 13, the fixing members 4 and 15 and the fixing members 23 and 24 extend from the lower end to the upper end of the wall 2 with the sectional shape shown in FIG.

Next, a procedure for fixing the seismic resistant slit material 1a to the mold will be described. First, the outer formwork 5 and 6 and the splint 10
After fixing the side piece 23a of the fixing member 23 with a nail, the outer molds 5 and 6 and the pier 10 are erected, or the erected outer molds 5 and 6 and the pier 10 are provided with a support member 14. The fixing member 23 is sandwiched and fixed with nails, then the side end of the core member 13 is fitted into the groove portion 17 of the support member 14, and the support member 15 is attached to the other end of the core member 13.
The groove 18 is fitted. Then, the fixing member 24 is fixed to the spar 11 of the inner mold frame 7 with nails, and the fixing member 24 is fitted into the concave fitting portion 22 of the supporting member 15 while fixing the inner mold frames 7 and 8 or fixed. The member 24 is the concave fitting portion 2 of the support member 15.
After fitting into 2, the inner molds 7 and 8 are erected, and the fixing members 24 are fixed to the crosspieces 11 of the inner molds 7 and 8 with nails. As a result, the state shown in FIG. 5 is reached, and the fixing work is completed. In this state, after further fixing the outer formwork 9 and the splint 12, concrete is placed in the formwork 5-9, and after the concrete is cured for a predetermined time, the formwork 5-8 and the spry 10-12 are removed. , The joint 4 with the wall 2 and the pillar 3 is constructed. In this case, when removing the formwork 5-6, the fixing member 2
3, 24 are pulled out from the concave fitting portions 21, 22 of the support members 14, 15. Alternatively, a method of sandwiching and fixing in a form without using nails is also possible.

Another embodiment is shown in FIGS. 6 and 7. In the earthquake-proof slit material 1b shown in FIG.
The plate-shaped fixing members 35 and 3 are attached to the concave fitting portions 33 and 34 of
6 is fitted and the earthquake-proof slit material 1c shown in FIG.
Then, fixing members 45 and 46 having a trapezoidal cross section are fitted into the concave fitting portions 43 and 44 of the support members 41 and 42. In any of the embodiments, the actions and effects described in this embodiment can be obtained.

In the present embodiment, the support material is integrally molded by the extrusion method, but the present invention is not limited to this, and as shown in FIGS. 8 (a) and 8 (b), for example. , Support materials 47, 48 to support base materials 47a, 48a
And two fitting base materials 47b and 48b. The two members are locking claws 47 formed on each other.
a1 and 47b1 and locking claws 48a1 and 48b1 are locked and integrated. Therefore, when the non-combustible member 27 is inserted into the hollow portion 26 of the supporting base material 47a, the non-combustible member 27 is fitted from the longitudinal direction or the opening side end in advance, or after being integrated,
It can be fitted from the longitudinal direction. Or FIG. 9
As shown in (a) and (b), the support members 49 and 50 may be two members including support base materials 49a and 50a and fitting base materials 49b and 50b. These two members use locking pieces 49c and 50c having a U-shaped cross section to lock the locking claws 49c1 and 49a1 (50c1 and 50a1) and the locking claw 49c1.
And 49b1 (50c1 and 50b1) can be integrated by press-fitting.

As a method of providing the non-combustible material on the support material, in addition to the above-mentioned insertion or lamination, it is also possible to sandwich the material between the core material and the support material without using an adhesive when assembling at the site.

Next, the present invention will be explained based on examples, but the present invention is not limited to such examples.

Example 1 In order to evaluate the fire resistance of a concrete wall in which a seismic slit is buried, as shown in FIG. 10, a ceramic fiber 53, which is an incombustible member, is provided in a groove 52 on the inner end surface of a support 51. In accordance with the method of making a test body for a simple fire resistance test of an outer wall fireproof structure with a laminated structure, a seismic slit material was arranged so as to traverse the middle of a concrete wall vertically. The plate made of expanded polystyrene resin whose surface was reinforced with paper had a thickness of 25 mm and a width of 83 mm, and the ceramic fiber had a thickness of 10 mm and a width of 25 mm. JIS A 1304
According to the simple fire resistance test for 2 hours, the maximum temperature of the back surface of the test piece was 131 ° C, and the flame did not penetrate from the slit material to the back surface of the test piece during the test, and there was no problem with the fire resistance performance. There was no

Example 2 As shown in FIG. 11, of the hollow portions 63 and 64 inside the support members 61 and 62, a plate having a thickness of 10 mm formed of a ceramic fiber 65 which is a nonflammable member in the hollow portion 64. A simple fire resistance test body was prepared in the same manner as in Example 1 except that the body was inserted. In the simple fire resistance test for 2 hours, the maximum temperature of the back surface of the test piece was 131 ° C, and the flame did not penetrate from the slit material to the back surface of the test piece during the test, and there was no problem in the fire resistance performance. .

Example 3 A test piece was prepared in the same manner as in Example 1 except that a rock wool plate having a thickness of 20 mm and a width of 25 mm was inserted in the concave portion of one of the support members instead of the ceramic fiber. It was prepared and a simple fire resistance test was carried out. In the 2-hour simple fire resistance test, the maximum temperature on the back surface of the test body was 145 ° C., and during the test, the flame did not penetrate from the slit material to the back surface of the test body.

Embodiment 4 As shown in FIG. 12, a concave fitting portion 72 of one support 71 is provided.
In addition, a test piece was prepared and a simple fire resistance test was carried out in the same manner as in Example 1 except that an iron plate 73 having a substantially U-shaped cross section and a thickness of 1.5 mm was sandwiched in place of the ceramic fiber. . In the 2-hour simple fire resistance test, the maximum temperature on the back surface of the test body was 177 ° C., and during the test, the flame did not penetrate from the slit material to the back surface of the test body.

Comparative Example 1 A test piece was prepared and a simple fire resistance test was carried out in the same manner as in Example 1 except that no nonflammable member was attached to the support material.
The maximum temperature of the back surface exceeded 260 ° C in 60 minutes, and the fire resistance of 2 hours was not obtained.

[0039]

As described above, according to the present invention,
A non-combustible member is provided on the support material, and in the event of an earthquake, the core material having a cushioning function and the support material and the support material and the formwork are connected by a fitting structure or nails. The core material can be firmly fixed between the molds without using such a member, and the slit material can be prevented from moving or being blown off by the concrete pressure without reinforcing it with the separator or the reinforcing bar.

In this way, the core material can function well as a cushioning material and a dam plate, and the slit material embedded in the concrete wall can be formed by simply attaching the noncombustible member to the support material. It is possible to prevent heat transfer from the portion to the back surface of the test body, and to set the maximum temperature of the back surface of the test body to 260 ° C. or less in a simple fire resistance test for 2 hours. Further, when the non-combustible member is a plate made of ceramic fiber or rock wool, the length of the supporting material can be easily adjusted on-site without the need for a special tool, and the fixing work can be easily performed. The cost can be reduced. When the non-combustible member is a metal plate having a rectangular cross section or a substantially U-shaped cross section, it can withstand a large concrete pressure.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of an earthquake-resistant slit material of the present invention.

FIG. 2 is a transverse cross-sectional view showing a state in which the seismic resistant slit material in FIG. 1 is removed from the mold.

FIG. 3 is a cross-sectional view showing a core material to which a slit addition material is attached.

FIG. 4 is a cross-sectional view showing an earthquake-resistant slit material according to another embodiment of the present invention.

FIG. 5 is a partial perspective view showing a state in which the earthquake-proof slit material in FIG. 4 is fixed to a mold.

FIG. 6 is a cross-sectional view showing an earthquake-resistant slit material according to still another embodiment of the present invention.

FIG. 7 is a cross-sectional view showing an earthquake-resistant slit material according to still another embodiment of the present invention.

FIG. 8 is a cross-sectional view showing another support material in the present invention.

FIG. 9 is a cross-sectional view showing still another supporting material according to the present invention.

FIG. 10 is a test body diagram for a simple fire resistance test of Example 1.

11 is a test body diagram for a simple fire resistance test of Example 2. FIG.

FIG. 12 is a diagram of a test body for a simple fire resistance test of Example 4.

[Explanation of symbols] 1, 1a, 1b, 1c Seismic slit material 2 walls Three pillars 4 joints 5, 6 outer formwork 7,8,9 Inner formwork 10, 11, 12 Jetty 13 core material 14, 15 Support material 16 liner paper 21, 22 concave fitting part 23, 24 fixing member 25, 26 cavity 27 Non-combustible material

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2E001 DG02 DH31 EA02 FA02 FA03                       FA71 GA23 GA64 HA01 HA04                       HA21 HA32 HA34 HB01 HC07                       HD03 HD08 HD09 HD11 HD13                       HE01 LA09 LA12                 2E002 EB13 FA04 FA09 FB02 HA02                       HB07 HB14 HB16 MA12 MA38

Claims (8)

[Claims] 1. A seismic-resistant slit material which is embedded near a joint between a wall of a concrete building and a column connected to the wall so as to penetrate the wall, for constructing the vicinity of the joint. A plate-shaped core member arranged between the molds that are erected to face each other, and a pair of fixing members fixed to the molds,
The inner end is fitted to each side end of the core member, and the outer end is made up of a pair of supporting members fitted to the fixing member. At least one supporting member of the pair of supporting members is a noncombustible member. Earthquake-resistant slit material provided with. 2. The earthquake-proof slit material according to claim 1, wherein the non-combustible member is inserted into a cavity formed in a support material. 3. The earthquake-proof slit material according to claim 1, wherein the non-combustible member is laminated on an inner end surface of a support material. 4. The earthquake-proof slit material according to claim 1, 2 or 3, wherein the non-combustible member is made of a ceramic fiber or rock wool plate. 5. The non-combustible member is made of a metal plate having a rectangular cross section or a substantially U-shaped cross section.
Seismic slit material described. 6. The earthquake-proof slit material according to claim 4, wherein the non-combustible member has a thickness of 30 to 5 mm. 7. The non-combustible member has a thickness of 2 to 0.1 mm.
The earthquake-proof slit material according to claim 5. 8. The earthquake-proof slit material according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the core material and the support material are integrated.