JP4021156B2 - Fireproof joint structure of fireproof partition walls - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a joint structure of a fireproof partition wall, and more particularly, to a fireproof joint material inserted at a joint intersection to improve the fireproof performance of the fireproof partition wall.
[0002]
[Prior art]
Walls of buildings are based on collective or city-planned conditions such as building use and scale, such as the use and scale of the building, or the site and layout of the building, strength, fireproof performance, seismic performance As for various performances, etc., it is subject to various regulations under the Building Standard Law. In addition, each public organization, such as the Ministry of Land, Infrastructure, Transport and Tourism, Housing Finance Corporation, Housing and Urban Development Corporation, has established its own standards for various performances of walls according to standard specifications or special specifications. For institutional buildings, more detailed heat insulation standards, sound insulation standards, fireproof standards, earthquake resistance standards, etc. may be applied depending on the nature and type of the wall.
[0003]
In particular, with regard to fireproof performance of building walls, interior restrictions and fireproof performance are strictly stipulated in the Building Standards Law, so the structure and constituent materials of the walls are limited by the interior restrictions specified in the Building Standards Law. And must comply with fireproof performance. For example, the Building Standards Act not only prescribes the structure of the entire building as a fireproof building or a simple fireproof building based on the use, scale, and area designation of the building, but also the use, scale, and prevention of fire spread of the building. From the viewpoints of evacuation, smoke removal, fire extinguishing, etc., fireproof performance is regulated with respect to each internal structure of the building, such as interior materials, inner wall structures, joinery structures, and pipe penetrations. Here, under the current Building Standards Law, building interior materials are classified into predetermined non-combustible grades (non-combustible material, semi-incombustible material and flame retardant material) with respect to non-combustible performance, and the building wall is The fireproof performance is classified into predetermined structural types (fireproof structure, semi-fireproof structure, fireproof structure, semifireproof structure, etc.).
[0004]
In addition, from the viewpoint of reducing the weight of the building, a dry fireproof partition wall having a structure in which a fireproof board material such as a gypsum board or a calcium silicate board is attached to both sides of a lightweight steel stud is provided as a fireproof compartment and a smoke exhaust compartment. Or it is used as a fire protection compartment wall such as a pit compartment.
[0005]
FIG. 8 is a longitudinal sectional view showing the structure of the fireproof partition wall of the dry construction method. The partition wall W shown in FIG. 8 lays a lightweight steel stud S vertically between upper and lower floor slabs or beams F1: F2, and a board material B1: B2 such as a gypsum board or a calcium silicate board on both sides of the stud S. Is a double-tensioned structure. In this type of partition wall W, an interior finishing material such as an interior decorative board, cloth, or paint is further laminated on the top board B2, and the interior finishing material forms an interior finishing surface B3 facing the indoor side.
[0006]
[Problems to be solved by the invention]
In such a fireproof partition wall, the construction mode in which the lower board B1 is installed horizontally and the upper board B2 is installed vertically is construction accuracy, sound insulation, fire resistance, thermal expansion and contraction, strength, This is desirable from the viewpoint of directivity. For this reason, a horizontal horizontal joint is formed on the construction surface of the lower pasting board B1, and a vertical vertical joint is formed on the construction surface of the upper pasting board B2.
[0007]
Here, the present inventor directly uses the interior decorative board whose surface finish is factory processed as the upper adhesive board, and attaches the wall surface of the two-layer structure composed of the lower adhesive board and the inner decorative board to both sides of the stud S. We have been researching the structural fireproof partition. According to such a fireproof partition wall, it is possible to reduce the construction cost and the construction period compared with the conventional fireproof partition wall having a three-layer structure of the board materials B1 and B2 and the interior finishing material B3.
[0008]
However, as a result of the repeated execution of the fire resistance test by the present inventors regarding the partition wall of this structure, fire resistance performance is provided at the portion where the horizontal joint of the underlaying board (base material) intersects with the vertical joint of the interior decorative board. It became clear that the phenomenon which deteriorates locally tends to occur.
[0009]
The present invention has been made in view of such circumstances, and the object of the present invention is to apply a base surface material horizontally to a frame member and to apply an interior decorative board vertically to a base material. In the fire-resistant partition wall with the above structure, local deterioration of the fire resistance that can occur at the joints between the horizontal joints of the base material and the vertical joints of the interior decorative panel is prevented, and localized due to the leakage of hot air in the event of a fire It is to prevent a high temperature region from occurring near the vertical joint.
[0010]
[Means and Actions for Solving the Problems]
To achieve the above object, the present invention comprises a vertical steel stud extending between upper and lower horizontal refractory compartments and aligned along a wall core, and oriented in a transverse direction and secured to said stud. In the fireproof joint structure in the fireproof partition wall composed of the base surface material and the interior decorative board fixed in the longitudinal direction on the base surface material,
The horizontal joint of the base surface material has an intersection with the vertical joint of the interior decorative board,
The vertical joint is formed in the form of an open joint on the interior side wall surface of the interior decorative board, and a fireproof joint material is disposed in the joint of the vertical joint,
The refractory joint member includes an insertion portion which is interposed between the lower ground material with an edge of said interior decorative panel, and eye underground portion for closing and concealing the eye underground of the longitudinal joint the intersection Prepared,
The fireproof joint material is formed of a metal plate molded member having left and right leg portions and a raised portion between the leg portions, and the leg portions constitute the insertion portion. Provide wall fireproof joint structure .
The present invention also includes a vertical steel stud extending between upper and lower horizontal refractory compartments and aligned along the wall core, a base material oriented in a transverse direction and fixed to the stud, In the fireproof joint structure in the fireproof partition wall composed of an interior decorative board fixed in the vertical direction on the lower ground material,
The horizontal joint of the base surface material has an intersection with the vertical joint of the interior decorative board,
The vertical joint is formed in the form of an open joint on the interior side wall surface of the interior decorative board, and a fireproof joint material is disposed in the joint of the vertical joint,
The fireproof joint material includes an insertion portion interposed between an edge portion of the interior decorative board and the base surface material, and a joint bottom portion that conceals the joint bottom of the vertical joint and closes the intersecting portion. Prepared,
The fireproof joint material has a structure in which a nonflammable material having a long and square cross section is integrally fixed on a metal plate in the form of a strip, and the edges on both sides of the metal plate constitute the insertion portion. A fireproof joint structure of a fireproof partition wall characterized by the above is provided.
[0011]
According to the above configuration of the present invention, the wall surface of the fireproof partition wall is configured by the base surface material and the interior decorative board oriented in the orthogonal direction, and the horizontal joint of the base surface material intersects with the vertical joint of the interior decorative board. To do. The vertical joint of the interior decorative board has a form of a watermark joint, and a fire resistance weakness that is locally inferior in fire resistance can occur at the joint intersection. However, the refractory joint material disposed at least at the joint joints closes the joint joint bottom of the vertical joints, prevents the ejection or outflow of hot air from the joint joints, and is locally in the vicinity of the vertical joints and in the vertical joints. Prevent high temperature areas from occurring.
[0012]
According to the fireproof partition wall having such a fireproof joint material, when a fire occurs in one of the chambers, the temperature of the entire rear surface of the partition wall rises relatively on average, and a local high temperature region is generated. Therefore, the partition wall exhibits the desired fire resistance performance in combination with the specific action (thermal expansion / contraction and leveling of strength, etc.) due to the orientation of the base surface material and the interior decorative board in the orthogonal direction. To do.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
[0014]
According to another embodiment of the present invention, the fireproof joint material has a structure in which a nonflammable material having a long and square cross section is integrally fixed on the metal plate. The non-combustible material is made of cut pieces such as gypsum board, gypsum plate, calcium silicate plate, wood-based non-combustible material, metal material, rock wool and the like. The edge part of a metal plate comprises the said insertion part, and a noncombustible material is corresponded to the said protruding part.
[0015]
The raised portion or the non-combustible material not only functions as a positioning means when inserting the refractory joint material into the vertical joint, but also functions to improve the fire resistance performance of the joint joint bottom of the vertical joint. Preferably, the height or thickness of the raised portion or the non-combustible material is set to be thinner than the depth of the vertical joint, and the vertical joint of the interior decorative board maintains the shape of the open joint that is recessed from the surface of the decorative board. In this way, by maintaining the vertical joint shape of the vertical joint and forming the indoor vertical passage in the vertical joint, a vertical passage capable of generating an updraft is formed in the vertical joint portion. In the vertical passage, when a fire occurs in the room on the opposite side of the partition wall, a rising air flow is generated due to the temperature rise of the wall surface, and the temperature rise in the vertical joint is suppressed by the heat transfer and heat dissipation action of the rising air flow Is done. Such a region may be further formed as an internal vertical passage between the fireproof joint material and the base surface material.
[0016]
【Example】
Hereinafter, with reference to an accompanying drawing, the example of the fireproof partition wall concerning the present invention is described in detail.
1 to 3 are a longitudinal sectional view, a transverse sectional view, and a perspective view showing a structure of a fireproof partition wall according to the present invention.
[0017]
In this embodiment, the partition wall 1 is constructed on the reinforced concrete floor slab F1. The lower end part of the partition wall 1 is fixed to the floor slab F1, and the upper end part of the partition wall 1 is fixed to the reinforced concrete floor slab F2 on the upper floor. The shaft assembly of the partition wall 1 includes a steel stud 10, a floor runner 11, and a ceiling runner 12. The stud 10 is made of a lightweight steel frame type member, and the floor runner 11 and the ceiling runner 12 are made of lightweight grooved steel. The runners 11 and 12 are respectively fixed to the floor slabs F1 and F2 by a locking tool 13 such as an anchor bolt, and the lower end and the upper end of the stud 10 are locked to the floor runner 11 and the ceiling runner 12, respectively. The studs 10 are aligned in the direction of the wall core with a predetermined interval (for example, an interval of 455 mm) set to a size of about 300 to 600 mm, and are erected vertically between the floor slabs F1 and F2.
[0018]
The base board 2 is attached to both sides of the stud 10 with screws 8 and / or an adhesive, and the decorative board 3 having a surface finish 4 applied in advance by factory processing is a base board with screws 9 or staples (not shown). 2 is fixed to the surface. Gypsum board or gypsum board is preferably used as the underlaying board 2, and non-combustible interior decorative board such as decorative gypsum board, decorative cement board, cosmetic slate, decorative calcium silicate board is suitably used as the decorative board 3. obtain. A hard gypsum board (specific gravity about 1.25) or a glass fiber reinforced gypsum board (specific gravity about 1.0) may be used as the underlay board 2. The finishing surface 4 of the decorative board 3 faces the indoor side, and the finishing surface 4 forms a finishing wall surface on the indoor side without performing interior finishing work such as cloth or painting.
[0019]
As shown in FIG. 1, the floor finishing material 6 is applied on the floor slab F <b> 1, and the baseboard 7 is attached to the lower end edge of the partition wall 1. The skirting board 7 covers the screw head of the screw 9 arranged at the lower end portion of the decorative board 3 from the indoor side, and the screw head at the lower end portion is concealed by the baseboard 7. As the baseboard 7, a general-purpose ready-made baseboard, for example, a vinyl baseboard or the like can be used.
[0020]
The ceiling light iron base C is suspended from the upper floor slab F2, and the ceiling finishing material 5 is attached to the ceiling light iron base C. The ceiling finishing material 5 is connected to the indoor side wall surface of the decorative board 3 via a parting edge (not shown) such as a ceiling edge. As the peripheral edge, a ready-made parting edge or joiner made of resin or metal, or a processed product of wood can be used. If desired, a watermark joint may be formed at the edge portion around the ceiling, or a sealing material filling joint filled with a caulking material or a sealing material may be formed.
[0021]
As shown in FIG. 3, the base board 2 is constructed in the horizontal direction, and the decorative board 3 is constructed in the vertical direction. The upper and lower base boards 2 are abutted against each other at the horizontal joint 20. The plurality of horizontal joints 20 extend horizontally and in parallel as joints in the form of butt joints. On the other hand, the vertical joint 30 of the decorative board 3 is constructed in the form of a watermark joint, and the width of the vertical joint 30 is set to a dimension of about 3 to 10 mm, for example, 5 mm.
[0022]
In this way, when the base board 2 and the decorative board 3 are constructed in the orthogonal direction, not only can the construction error of the board tensioning work be corrected, but also various physical properties such as strength, sound insulation performance, thermal expansion / contraction, strength, etc. Due to the difference in directivity or directionality of the boards 2 and 3, various physical properties of the entire wall surface can be leveled, and as a result, the quality of the entire wall surface can be improved. However, the present inventors conducted a fire resistance test on the partition wall in this state (i.e., a state before attaching the fireproof joint material). As a result, hot air is applied to the joint portion 25 of the horizontal joint 20 and the vertical joint 30. It was found that there was a high possibility that a blow-through occurred, and this was a weak point in fire resistance. In other words, orienting the base board 2 and the decorative board 3 in the orthogonal direction is advantageous in improving workability or various performances of the partition wall, but the boards 2, 3 are provided in the joint intersection 25. At the time of thermal expansion or thermal deformation, fine gaps or small holes are likely to occur, and such gaps or small holes are likely to cause the high-temperature atmosphere on one side of the partition wall 1 to leak or blow out to the opposite side of the wall body.
[0023]
For this reason, the partition wall 1 of a present Example is provided with the refractory joint material 40 arrange | positioned in the vertical joint 30 as shown in FIG.
FIG. 4 is a partially enlarged sectional view of the partition wall 1 showing the structure of the fireproof joint material 40.
[0024]
The fireproof joint material 40 is formed of a bent product of a rust-proof steel plate or decorative steel plate having a thickness of 0.3 to 0.5 mm, for example, a galvanized iron plate having a thickness of 0.3 mm, and has a uniform hat shape (cap) Type) cross-sectional shape. The refractory joint material 40 includes a pair of leg portions 41 extending to the left and right of the vertical joint 30 and a raised portion 42 located in the vertical joint 30. The left and right leg portions 41 of the fireproof joint material 40 are interposed between the base board 2 and the decorative board 3 and are sandwiched between the boards 2 and 3. In actual construction, the fireproof joint material 40 is positioned at the vertical joint 30 when the decorative board 3 is overlaid on the base board 2, and is pressed onto the base board 2 by the edge of the decorative board 3. If desired, an adhesive or an adhesive may be applied to the legs 41 and the legs 41 may be bonded to the boards 2 and 3. The central raised portion 42 is slightly raised from the surface of the board 2, but the surface of the raised portion 42 constituting the joint bottom is still spaced away from the surface layer of the decorative board 3 and retracted into the joint. Therefore, the design of the vertical joints of the vertical joints 30 is not impaired by the arrangement of the fireproof joints 40. At the same time, when the raised portion 42 is retracted from the surface finish 4, an indoor vertical passage 45 is formed on the indoor side of the raised portion 42, and the galvanized iron plate is raised, so that the interior between the raised portion 42 and the base board 2 is formed. A vertical passage 46 is formed.
[0025]
As shown in FIG. 1, the long fireproof joint material 40 is continuous from the floor slab F <b> 1 to the upper floor slab F <b> 2 and extends over the entire height of the partition wall 1. The intersection 25 between the horizontal joint 20 and the vertical joint 30 is blocked by the fireproof joint material 40 and is substantially completely hidden from the indoor side. Therefore, even if a fire occurs in one of the chambers and the partition wall 1 is heated, the hot air at the time of the fire does not leak from the joint intersection 25 to the other chamber, and the back surface of the partition wall 1 Does not affect the temperature (temperature of the wall on the opposite side of the fire chamber). Therefore, by providing the fireproof joint material 40 at the joint intersection 25, it is possible to prevent a local high temperature region from being formed in the vicinity of the joint intersection 25.
[0026]
Actually, the inventor repeatedly performed the fireproof test on the partition wall 1 having the above-described configuration including the fireproof joint material 40. In the partition wall 1 including the fireproof joint material 40, the vicinity of the vertical joint 30 is used. The ambient temperature of the vertical joint 30 has a value of less than 200 ° C. (room temperature + 180 ° C.) over the entire length of the vertical joint 30, and as a result, the formation of a local high temperature region due to the leakage of hot air is the disposition of the refractory joint material 40. It was confirmed that it can be surely prevented.
[0027]
Further, in the indoor vertical passage 45 described above, an ascending air current is generated when the wall surface temperature rises, and the ascending air current functions to suppress the temperature rise of the vertical joint portion by the heat transfer and heat dissipation action of the ascending air current. For this reason, it is considered that the structure of the refractory joint material 40 works advantageously in suppressing the temperature rise in the vicinity of the vertical joint 30. Similarly, the internal vertical passage 46 also generates a rising air current between the base board 2 and the raised portion 42 that suppresses the temperature rise in the vertical joint portion by heat transfer and heat dissipation.
[0028]
5 to 7 are partial enlarged cross-sectional views of partition walls showing modifications of the refractory joint material 40. FIG.
The fireproof joint material 50 shown in FIG. 5 is made of a rust-proof steel plate or decorative steel plate having a thickness of 0.3 to 0.5 mm, for example, a strip of zinc steel plate having a thickness of 0.3 mm. The refractory joint material 50 has a uniform and flat cross-sectional shape over the entire length, and the edge region 51 of the refractory joint material 50 is interposed between the base board 2 and the decorative board 3. Sandwiched between. The central zone 52 of the refractory joint material 50 closes the joint bottom of the joint intersection 25 and prevents the circulation of hot air at the joint intersection 25.
[0029]
The fireproof joint material 60 shown in FIG. 6 is integrated with a rust-proof steel plate or decorative steel plate having a thickness of 0.3 to 0.5 mm, for example, a strip of zinc steel plate having a thickness of 0.3 mm and a central zone 62 of the strip. And a non-combustible material 63 having a square cross section that is fixedly fixed. The incombustible material 63 is made of a plaster board, a gypsum board, or a calcium silicate board, and is fixed to one surface of the central zone 62 with a heat-resistant adhesive or adhesive as a long tangible member having the same overall length as the band board. Is done. The fireproof joint material 60 formed in a hat shape as a whole is held in the vertical joint 30 with the left and right leg portions 61 interposed between the base board 2 and the decorative board 3. If desired, an adhesive or adhesive may be applied to the legs 61 to bond the fireproof joint material 60 to the boards 2 and 3.
[0030]
The fireproof joint material 70 shown in FIG. 7 has a structure in which a non-combustible material 73 is integrally attached to a central zone 72 of the strip, similarly to the fireproof joint material 60 shown in FIG. However, the legs 71 of the refractory joint material 70 are formed only on one side of the non-combustible material 73. The refractory joint material 70 is held in the vertical joint 30 in a state where the legs 71 are interposed between the base board 2 and the decorative board 3 on one side of the vertical joint 30.
[0031]
In addition, in the fireproof joint material 50, 60, 70 shown in FIGS. 5 to 7, an adhesive or an adhesive is applied to the edge region 51 or the legs 61, 71 as desired, and the fireproof joint material 50, 60, 70 is applied. May be adhered to the boards 2 and 3.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above-described embodiments, and various modifications or changes can be made within the scope of the present invention described in the claims. Needless to say, such modifications and variations are also included in the scope of the present invention.
[0032]
For example, the material for the base board and the decorative board is not limited to the above-mentioned gypsum board, gypsum board, calcium silicate board, etc., as long as it has fire resistance and non-combustibility that can be used as the face material of the fireproof partition wall. It is not something.
[0033]
The above-mentioned embodiment relates to a single arrangement partition wall in which studs are arranged at the wall core position, but the double arrangement partition wall in which studs are arranged in two rows on both sides of the wall core is configured according to the present invention. May be adopted.
[0034]
【The invention's effect】
As described above, according to the above-described configuration of the present invention, in the fireproof partition wall having a structure in which the base member is applied horizontally to the frame member and the interior decorative board is applied vertically to the base member, Prevents local deterioration of the fire resistance that can occur at the joints between the horizontal joints of the lower ground material and the vertical joints of the interior decorative board, and the local high temperature area is near the vertical joints due to the leakage of hot air during a fire. It can be prevented from occurring.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a fireproof partition wall according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a fireproof partition wall taken along line II-II in FIG.
3 is a partially broken perspective view of the fireproof partition wall shown in FIGS. 1 and 2. FIG.
4 is a partially enlarged cross-sectional view showing a joint structure of a fireproof partition wall shown in FIGS. 1 to 3; FIG.
FIG. 5 is a partially enlarged sectional view of a partition wall showing a modified example of the fireproof joint material.
FIG. 6 is a partially enlarged cross-sectional view of a partition wall showing another modification of the fireproof joint material.
FIG. 7 is a partially enlarged cross-sectional view of a partition wall showing still another modified example of the fireproof joint material.
FIG. 8 is a longitudinal sectional view of a partition wall showing a structure of a fireproof partition wall not provided with a fireproof joint material.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Partition wall 2 Underlay board 3 Decorative board 4 Finish surface 10 Steel stud 20 Horizontal joint 25 Joint intersection 30 Vertical joint 40, 50, 60, 70 Fireproof joint material

Claims (6)

A vertical steel stud extending between upper and lower horizontal refractory compartments and aligned along the wall core; a base material oriented in a transverse direction and fixed to the stud; and In the fireproof joint structure in the fireproof partition wall composed of the interior decorative board fixed in the vertical direction to
The horizontal joint of the base surface material has an intersection with the vertical joint of the interior decorative board,
The vertical joint is formed in the form of an open joint on the interior side wall surface of the interior decorative board, and a fireproof joint material is disposed in the joint of the vertical joint,
The refractory joint member includes an insertion portion which is interposed between the lower ground material with an edge of said interior decorative panel, and eye underground portion for closing and concealing the eye underground of the longitudinal joint the intersection Prepared,
The fireproof joint material is formed of a metal plate molded member having left and right leg portions and a raised portion between the leg portions, and the leg portions constitute the insertion portion. Wall fireproof joint structure . The fireproof joint structure according to claim 1, wherein a joint vertical passage that generates an updraft when the wall surface temperature rises is formed on the indoor side of the joint bottom portion. The fireproof joint structure according to claim 1 or 2, wherein an intra-joint vertical passage that generates an updraft when the wall surface temperature rises is formed between the joint bottom portion and the base surface material. A vertical steel stud extending between upper and lower horizontal refractory compartments and aligned along the wall core; a base material oriented in a transverse direction and fixed to the stud; and In the fireproof joint structure in the fireproof partition wall composed of the interior decorative board fixed in the vertical direction to
  The horizontal joint of the base surface material has an intersection with the vertical joint of the interior decorative board,
  The vertical joint is formed in the form of a watermark joint on the interior side wall surface of the interior decorative board, and a fireproof joint material is disposed in the joint of the vertical joint,
  The fireproof joint material includes an insertion portion interposed between an edge portion of the interior decorative board and the base surface material, and a joint base portion that hides the joint joint of the vertical joint and closes the intersecting portion. Prepared,
  The fireproof joint material has a structure in which a nonflammable material having a long and square cross section is integrally fixed on a metal plate in the form of a strip, and the edges on both sides of the metal plate constitute the insertion portion. Fireproof joint structure of fireproof partition wall characterized by 5. The fireproof joint structure according to claim 4, wherein a joint vertical passage that generates an upward air flow when the wall surface temperature rises is formed on the indoor side of the joint bottom portion. A fireproof partition wall of a dry construction method comprising the fireproof joint structure according to any one of claims 1 to 5 .

Images