JP6304523B2 - Suspended ceiling structure - Google Patents

Description

  The present invention relates to a suspended ceiling structure.

  Conventionally, suspended ceilings are frequently used as ceilings of buildings such as schools, hospitals, production facilities, gymnasiums, swimming pools, airport terminal buildings, office buildings, theaters, and cinecones. The suspended ceiling (suspended ceiling structure) A is, for example, as shown in FIG. 4, a plurality of field edges 1 arranged in parallel at a predetermined interval in one horizontal direction T1, and perpendicular to the field edges 1. A plurality of field receivers 2 that are arranged in parallel in the other horizontal direction T2 with a predetermined interval and are integrally connected to a plurality of field edges 1, a lower end connected to the field receiver 2, and an upper end A plurality of suspension bolts (suspending members) 4 fixedly attached to the upper structure 3 (building frame) such as floor materials of the floor and the lower surface of the field edge 1 are integrally attached by screws or the like. And a ceiling panel (ceiling material) 6 forming a ceiling surface (ceiling part 5).

  On the other hand, the suspended ceiling A formed by suspending and supporting the ceiling base 7 and the ceiling panel 6 of the field edge 1 and the field edge receiver 2 with the suspension bolts 4 rolls due to the horizontal force acting during the earthquake due to its structure. It's easy to do. Then, when the earthquake sways, the end portion 5a of the ceiling portion 5 may collide with a building component (building frame) 9 such as a wall, a column, or a beam, and the ceiling panel 6 may be damaged or fallen off. there were.

  For this reason, in recent years, it has been demanded that this type of suspended ceiling A be seismically improved, and a net is placed under the ceiling portion 5 to prevent the ceiling panel 6 from falling, or the ceiling base 7 and the ceiling base 7 Measures have been proposed and implemented, such as reinforcing joints or replacing suspended ceilings with the latest earthquake-resistant technology.

  However, the seismic retrofit method that stretches the net below the ceiling 5 lowers the design of the suspended ceiling A due to the net, and the net interferes with maintenance of incidental facilities such as lighting, sprinklers, and air conditioners. There is a problem that a large work scaffolding is required at the time of installation, and the earthquake-proof repair cost increases.

  In addition, in the seismic retrofit method for reinforcing the ceiling base 7 and the joint portion, the range that can be reinforced is limited by ancillary facilities arranged in the ceiling space H, etc. General materials that are not JIS materials are used for the ceiling underside 7 of the edge holder 2, etc., and may have low strength. The performance after reinforcement is unstable, and sufficient repair accuracy cannot be secured. There is a case that can not cope.

  The seismic retrofit method by exchanging the entire surface makes it possible to make it seismic with the latest knowledge, but the use prohibition period and use restriction period of the room under the ceiling become longer, and a large amount of waste is generated. There is an inconvenience.

  On the other hand, the applicant of the present application has a ceiling vibration formed by extending a wire, which is fixed to a building component, with its end fixed to a building component horizontally, and connecting the wire and the ceiling base below the ceiling material. An application for reduction structure (suspended ceiling structure) has been filed (see Patent Document 1). Moreover, in this suspended ceiling, a wire is attached to the ceiling by attaching a clamp to the wire, attaching a connecting member made of a bolt to the clamp and penetrating the ceiling material, and connecting the connecting member to a field receiver with a nut. The ground is connected and fixed.

  And in the suspended ceiling constructed in this way, the ceiling and the building component behave together when the ceiling foundation and the building component are connected via a strained wire, when vibration occurs due to an earthquake. As a result, it is possible to suppress the shaking of the ceiling when vibration is generated.

JP 2008-121371 A

  However, in the suspended ceiling formed by connecting the wire of the tension material and the ceiling base, the ceiling mounted on the wire is connected to the field receiver using a bolt connecting member and a nut. Work from the bottom of the section and from both sides of the ceiling space was required, and there was still room for improvement in terms of workability.

  In particular, when seismic retrofitting is performed by attaching a wire to an existing suspended ceiling, it is accompanied by dangerous work in the space behind the ceiling, and incidental equipment such as air conditioners and piping in the space behind the ceiling and the superstructure of the building. In such a case, there is a possibility that the construction cannot be performed.

  In view of the above circumstances, the present invention provides a suspended ceiling structure that can prevent breakage or dropout of a ceiling material (ceiling panel) during an earthquake while ensuring workability and economy, and has excellent seismic performance. For the purpose.

  In order to achieve the above object, the present invention provides the following means.

The suspended ceiling structure of the present invention is a suspended ceiling structure in which a ceiling material that forms a ceiling surface is attached to a ceiling base that is suspended and supported by an upper structure of a building frame via a suspension member. And it is arranged in a horizontal direction along the ceiling surface, and has a substantially bar-like shape with a substantially inverted U-shaped cross section arranged to be connected and fixed to the ceiling material and / or the ceiling base from below the ceiling material . A tensile material that is a shape steel material, and a tensile material end connecting means for joining the end of the tensile material to a building frame, and the building frame that joins the end of the tensile material is made of concrete. The tensile material end connecting means is provided integrally with the housing side joint that is fixedly installed on the concrete building housing using a plurality of anchor bolts or a plurality of through bolts, and the housing side joint. And the tension And an end portion of is formed and a tension member side joining portion to be connected.

  Further, in the suspended ceiling structure of the present invention, the tensile material end connecting means is installed such that the frame side joint is fixed to the concrete building frame above the ceiling material, and the tensile material side joint Is preferably provided integrally with the lower end of the housing-side joint and protrudes downward from the ceiling material.

  Further, in the suspended ceiling structure of the present invention, the tensile material end connecting means is installed such that the frame side joint is fixed to the concrete building frame below the ceiling material, and the tensile material side joint May be provided integrally with the upper end of the housing side joint.

Furthermore, in the suspended ceiling structure of the present invention, the tensile material end connecting means includes a frame-side joint portion whose upper end side is the concrete building frame above the ceiling material, and a lower end side is the ceiling material. May be fixedly installed on the concrete building housing below, and the tensile material side joint portion may be integrally provided from the upper end to the lower end intermediate portion of the housing side joint portion.
Further, in the suspended ceiling structure of the present invention, the tensile material end connecting means includes an engagement holding piece that engages and holds an outer peripheral end portion of a ceiling portion including the ceiling material and the ceiling base. It is desirable .

  In the suspended ceiling structure of the present invention, the intermediate portion of the substantially rod-shaped tensile material is fixed to the ceiling material and the ceiling base from below the ceiling surface using screws or the like, so that the conventional tensile material wire and ceiling are fixed. Compared to a suspended ceiling structure in which the ground is joined by bolts and nuts, work in the space behind the ceiling is almost unnecessary when installing a tension member, and the workability can be greatly improved.

  As a result, even when a tensile material is attached to an existing suspended ceiling structure to improve the earthquake resistance performance, dangerous work in the ceiling space is unnecessary, and it is installed in the ceiling space. It is possible to eliminate the inconvenience that there is a range in which construction cannot be performed due to the clearance with the attached facilities and the building frame, and it is possible to shorten the required construction period and reduce the cost.

  In addition, maintenance of ceiling-related facilities such as air conditioners and lighting can be easily performed after earthquake-proof repairs, and a rod-shaped tensile material is placed on the ceiling, which impairs design compared to nets. Nor. Furthermore, it can be used for any material of ceiling material, whether it is a JIS material or a general material used for the field edge and the field edge of the ceiling base, whether it is a newly installed or existing suspended ceiling structure. It becomes possible to improve the seismic performance.

  In addition, anchor-side joints are fixed to building structures such as RC structures and SRC structures, such as concrete columns and walls, using anchor bolts or through bolts. By connecting the end of the tensile material to the part, an external force (horizontal force acting during the earthquake) is reliably and effectively applied between the building frame and the tensile material via the tensile material end connection means in the event of an earthquake. ) Can be borne while communicating.

 This makes it possible to more reliably and effectively suppress the rolling of the suspended ceiling structure in the event of an earthquake, compared to the case where a tension member is simply provided. It is possible to prevent the ceiling material from being damaged or falling off by colliding with a building frame such as a pillar or beam. That is, a more reliable suspended ceiling structure can be realized, and a more reliable suspended ceiling structure can be retrofitted.

  In addition, it is possible to install the tension material end connection means by a simple operation of installing anchor bolts or through bolts on the side of the concrete building frame, and attaching the frame side joints. Can be easily connected to the building frame. Therefore, even when a tensile material is attached to an existing suspended ceiling structure to improve the earthquake resistance, there is no need for dangerous work in the ceiling space, and it is installed in the ceiling space. It is possible to eliminate the inconvenience that the construction cannot be performed due to the clearance with the attached facilities and the building frame, and it is possible to shorten the necessary construction period and reduce the cost.

  Furthermore, the frame side joint is fixedly installed on the concrete building frame above the ceiling material, and the tensile material side joint is integrally provided at the lower end of the frame side joint, so that the end of the ceiling material and the building frame When the tension material end connecting means is configured to project downward from the ceiling material through the side surfaces, for example, it is formed by removing a part of the ceiling material on the end side of the ceiling part made of the ceiling base and the ceiling material, etc. By using the gaps, anchor bolts or through bolts can be installed on the side surface of the concrete building frame on the ceiling side space side, and the frame side joint (tensile material end connecting means) can be easily attached. Thereby, the edge part of a tension | tensile_strength material can be easily connected to a building frame.

  In addition, the frame side joint is fixedly installed on the concrete building frame below the ceiling material, and the tensile material side joint is integrally provided at the upper end of the frame side joint, and the tensile material end connecting means is provided. If it comprises, an anchor bolt or a penetration bolt will be installed below the ceiling material, and it will be possible to attach a frame side joint part (tensile material edge part connection means) easily, completely eliminating the work in the space behind the ceiling. . Thereby, the edge part of a tension | tensile_strength material can be more easily connected to a building frame.

  Furthermore, the upper end side of the frame side joint is fixed to the concrete building frame above the ceiling material, and the lower end side is fixed to the concrete building frame below the ceiling material. Even when the tension material end connecting means is configured by integrally providing in the middle part between the upper end and the lower end of the frame side joint part, for example, a part of the ceiling material on the end side of the ceiling part composed of the ceiling base and the ceiling material is used. Using the gaps formed by removing, etc., anchor bolts or through bolts are installed on the side of the concrete building skeleton on the space behind the ceiling, and the skeleton side joints (tension material end connection means) are easily attached. be able to. Thereby, the edge part of a tension | tensile_strength material can be easily connected to a building frame.

It is a perspective view which shows the suspended ceiling structure which concerns on one Embodiment of this invention. It is a sectional side view which shows the tension | pulling material edge part connection means of the suspended ceiling structure which concerns on one Embodiment of this invention. FIG. 3 is a view taken along line X1-X1 in FIG. It is a perspective view which shows the conventional suspended ceiling structure.

  Hereinafter, a suspended ceiling structure according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. Here, this embodiment is a suspended ceiling structure used as a ceiling of buildings such as schools, hospitals, production facilities, gymnasiums, pools, airport terminal buildings, office buildings, theaters, cinecones, etc., and existing suspended ceiling structures. It is about earthquake-resistant repair method.

  As shown in FIG. 1, the suspended ceiling (suspended ceiling structure) B of the present embodiment includes a field edge 1, a field edge receiver 2, a suspension member (suspension bolt) 4, and a ceiling material 6.

  The field edge 1 is, for example, a grooved steel having a U-shaped cross section, and extends horizontally, and is arranged in parallel at a predetermined interval in a horizontal direction T1 in one horizontal direction. .

  The field edge receiver 2 is, for example, a grooved steel having a U-shaped cross section, is horizontally extended, and is arranged in parallel with a predetermined interval in the horizontal direction T2 in the other horizontal direction. Yes. At this time, the field edge receiver 2 is disposed so as to intersect the field edge 1 and is disposed in a state of being placed on the plurality of field edges 1. Each field edge receiver 2 is connected to the field edge 1 by using a field edge connection bracket (clip) at a portion intersecting with the field edge 1.

  The suspension member 4 is a suspension bolt that is formed in a cylindrical bar shape and has an external thread threaded on its outer peripheral surface, and its upper end is fixed to an upper structure 3 (building frame) such as an upper floor or is made of steel. A plurality of lower ends are connected to the field edge receiver 2 by using hanging member connecting brackets (hangers). Further, the plurality of suspension members 4 are dispersedly arranged at a predetermined interval.

The ceiling material (ceiling panel) 6 is formed by laminating two boards and integrally stacking them. For example, the ceiling material (ceiling panel) 6 is formed with a weight of about 20 kg per 1 m ² together with the weight of a ceiling accessory. The ceiling material 6 is installed on the lower surfaces of the plurality of field edges 1 by screws or the like. The ceiling material 6 may be composed of one board and three or more boards.

  In the suspended ceiling B, the field edge 1, the field edge receiver 2, and the ceiling material 6 are suspended and supported by the upper structure 3 of the building via the suspension member 4. A ceiling base 7 is formed by the field edge 1 and the field edge receiver 2, and the ceiling part 5 is formed by the ceiling base 7 and the ceiling material 6 attached to the ceiling base 7, and the ceiling surface of the lower floor is formed by the ceiling part 5. ing.

  On the other hand, in the suspended ceiling B of the present embodiment, as shown in FIG. 1 to FIG. 3, a substantially inverted U-shaped cross section is provided below the ceiling portion 5 and horizontally along the lower surface (ceiling surface) of the ceiling portion 5. A substantially rod-like tension member 11 is disposed. Further, the tensile material 11 is a grooved steel formed of, for example, an aluminum extruded shape steel or a steel member, and a bolt insertion hole 12 is formed in each of the pair of side wall portions 11a and the connecting portion 11b on the end side. ing.

  Further, the tension member (reinforcing grid member) 11 is fixed to the ceiling member 6 (ceiling part 5) and the ceiling base 7 of the field edge 1 from below the ceiling part 5 by connection fixing means such as a tapping screw. Is provided. And in this embodiment, such a tension material 11 is arrange | positioned under the ceiling part 5 at the grid | lattice form (grid shape) of 900-2400 mm pitch, for example.

  Furthermore, in the suspended ceiling B of the present embodiment, as shown in FIGS. 1 to 3, the outer peripheral end 5 a side of the ceiling portion 5 of the ceiling back space H between the ceiling portion 5 and the upper structure 3 of the building, that is, On the side surface of a concrete building frame (RC building or SRC building component) 9 such as a wall, a column, or a beam in the ceiling space H, a tensile material end connecting means 20 is extended in the vertical direction T3. It is attached integrally.

  Moreover, the tension | pulling material edge part connection means 20 of this embodiment arrange | positions a pair of flange 21a in the front and back, respectively, for example, H-section steel (for example, H-100 * 100 * 6 * 8mm) extended in the up-down direction T3 ) Is used to provide a housing-side joint portion 21. Further, the housing side joint portion 21 is provided on each of the upper end side and the lower end side of the housing side joint portion 21 and is integrally fixed to the housing side joint portion 21 so as to protrude with a predetermined dimension in the lateral direction T2. And a pair of fixing plate portions 22 provided as described above. Also, anchor bolt insertion holes 23 are formed on the left and right sides of the pair of fixing plate portions 22 on the upper end side and the lower end side, respectively.

  Further, the tensile material end connecting means 20 is fixed to a plurality of anchor bolts 24 such as chemical anchors at predetermined positions of the concrete building skeleton 9, and these anchor bolts 24 are inserted into the anchor bolt insertion holes 23. The nut is fastened, and the fixing plate portion 22 and thus the housing side joint portion 21 are integrally installed on the side surface of the building housing 9. Further, at this time, the interstitial portion 25 is provided by filling non-shrink mortar or installing a rubber material or the like between the fixing plate portion 22 (the housing side joint portion 21) and the side surface of the building housing 9. Is desirable.

  Further, a connecting portion 26 made of square steel (for example, □ -100 × 100 × 3.2 mm) or the like is provided at the lower end of the housing side joint portion 21 of the tensile material end connecting means 20. Further, an engaging portion 28 having an engaging holding piece 27 that engages with and holds the outer peripheral end portion 5a of the ceiling portion 5 is integrally connected. In addition, the connecting portion 26 and the engaging portion 28 are provided with bolt insertion holes 29 that are drilled up and down to communicate with each other.

  Further, at the lower end of the engaging portion 28, a bolt is inserted into the connecting portion 26 and a bolt insertion hole 29 drilled in the engaging portion 28, and a nut is screwed, whereby the tensile material side joining portion 30 is integrated. It is fixed and provided. That is, the tensile material side joining portion 30 is integrally connected to the housing side joining portion 21 via the connecting portion 26 and the engaging portion 28.

  Moreover, in this embodiment, the tension | tensile_strength material side junction part 30 is channel steel (for example, channel steel-46.2 * 43.2 * 3.2mm), and a pair of side wall part 30a and a pair of side wall part 30a. Are provided in a U-shaped section (substantially inverted U-shaped section). Bolt insertion holes 31 are formed through the pair of side wall portions 30 a, respectively, and the connecting portion 30 b is also connected to the bolt insertion holes 29 formed in the connecting portion 26 and the engaging portion 28. A bolt insertion hole 32 is formed so as to penetrate the connecting portion 26 and the engaging portion 28.

Further, the tensile material side joining portion 30 is arranged so that the pair of side wall portions 30a are along the axial direction (extending direction) of the tensile material 11, in other words, in the direction orthogonal to the side surface of the building housing 9 in this embodiment. The pair of side wall portions 30a are arranged along the side. Furthermore, the tensile material side joining portion 30 is integrally provided at the lower end of the housing side joining portion 21 via the connecting portion 26 and the engaging portion 28, and the end portion 5a of the ceiling portion 5 (ceiling material 6) and the building housing. 9 projecting downward from the ceiling surface of the ceiling material 6 through the space between the nine side surfaces .

  In the suspended ceiling B of the present embodiment, as shown in FIGS. 1 to 3, the bolt insertion holes 12, 31, 32 formed in the side wall portions 11 a, 30 a and the connecting portions 11 b, 30 b are communicated with each other. In this manner, the end portions of the tension members 11 arranged in a lattice shape are engaged with the tension member-side joints 30 of the tension member end connection means 20, and the end portions of the tension members 11 are connected with bolts and nuts together with the end portions. It joins to the tensile material side joining part 30.

  As a result, the tension member 11 is disposed with its middle portion fixed to the ceiling member 6 or the ceiling base 7 and its end connected to the concrete building frame 9 via the tension member end connecting means 20. The

  And in the suspended ceiling B of this embodiment which consists of the said structure, the tension | tensile_strength material 11 arrange | positioned under the ceiling part 5 has a concrete building frame (end part via the tension | tensile_material end part connection means 20). Since the middle part is connected to the ceiling material 6 and the field edge 1 and connected to the building structural member 9, the ceiling part 5 is integrated with the building frames 3 and 9 by this tension material 11 in the event of an earthquake. It behaves and the shaking of the ceiling part 5 is suppressed.

  On the other hand, when retrofitting the existing suspended ceiling A to the suspended ceiling B of the present embodiment, one end and the other end are connected to the building housing 9 via the tensile material end connecting means 20, respectively. The tension member 11 can be attached by fixing the portion to the ceiling material 6 and / or the ceiling base 7 from below the ceiling portion 5 using a connection fixing means such as a screw. For this reason, compared with the conventional suspended ceiling structure in which the wire of the tensile material and the ceiling base 7 are joined by bolts and nuts, a large-scale work in the ceiling space H is not required when the tensile material 11 is installed.

  Therefore, in the suspended ceiling structure (suspended ceiling) C of the present embodiment, the intermediate portion of the tension member 11 is fixed to the ceiling member 6 and the ceiling base 7 from below the ceiling surface using connection fixing means such as screws. Compared to the conventional suspended ceiling structure in which the wire of the tensile material and the ceiling base 7 are joined by bolts and nuts, the work in the ceiling space H is not required when the tensile material 11 is installed. It becomes possible to greatly improve.

  Thus, even when the tensile material 11 is attached to the existing suspended ceiling structure to perform earthquake-resistant repair for improving the earthquake-resistant performance, dangerous work in the ceiling space H is unnecessary, and the ceiling space H is not required. It is possible to eliminate the inconvenience that there is a range where construction cannot be performed due to the clearance with the attached facilities and the building housing 3, and it is possible to shorten the required construction period and reduce the cost.

  In addition, after the seismic retrofitting, maintenance of ceiling-related facilities such as air conditioners and lighting can be easily performed, and the rod-shaped tension member 11 is disposed on the ceiling portion 5. There is no loss. Furthermore, regardless of whether JIS material or general material is used for the field edge 1 and field edge receiver 2 of the ceiling base 7, the ceiling material 6 can be of any material, whether it is a new or existing suspended ceiling structure. It is possible to improve the seismic performance.

  Furthermore, the building side joint 21 is fixed to the building frame 9 such as a concrete column or wall such as RC or SRC with anchor bolts 24, and is integrally provided at the lower end of the building side joint 21 to provide the ceiling material 6 By connecting the end portion of the tensile material 11 to the tensile material side joint portion 30 that protrudes further downward, between the building housing 9 and the tensile material 11 via the tensile material end connection means 20 at the time of an earthquake. Therefore, it is possible to transmit external force (horizontal force acting during an earthquake) reliably and effectively.

 Thereby, compared with the case where the tension member 11 is simply provided, the roll of the suspended ceiling structure B can be more reliably and effectively suppressed during an earthquake, and the ceiling portion 5 including the ceiling base 7 and the ceiling material 6 can be suppressed. It is possible to prevent the end portion from colliding with the building housing 9 such as a wall, a column, or a beam, and causing the ceiling material 6 to be damaged or fallen off. That is, it is possible to realize a more reliable suspended ceiling structure B, and it is possible to perform earthquake-resistant repair of the more reliable suspended ceiling structure B.

  Further, for example, a concrete building is formed with respect to the ceiling back space H by using a gap formed by removing a part of the ceiling material 6 on the end 5a side of the ceiling portion 5 including the ceiling base 7 and the ceiling material 6. Anchor bolts 24 can be placed on the side surface of the housing 9 to attach the housing-side joining portion 21.

  As a result, even when the tensile material 11 is attached to the existing suspended ceiling structure and the earthquake-resistant repair is performed to improve the earthquake-resistant performance, dangerous work in the ceiling space H is unnecessary, and the ceiling space H It is possible to eliminate the inconvenience that there is a range where construction cannot be performed due to the clearance between the auxiliary equipment and the building frame provided in the interior, and it is possible to shorten the required construction period and reduce the cost.

  Therefore, according to the suspended ceiling structure B of the present embodiment, while ensuring workability and economy, it is possible to prevent the end portion 5a of the ceiling portion 5 from colliding and causing breakage or dropout during an earthquake, and the seismic performance is improved. It becomes possible to improve.

  Moreover, in the suspended ceiling structure B of this embodiment, even if the ceiling vertical support force is lost, it is possible to exert a fail-safe function that prevents the entire ceiling surface from collapsing with the tensile material 11.

  As mentioned above, although one embodiment of the suspended ceiling structure according to the present invention has been described, the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.

  For example, in the present embodiment, the description has been given on the assumption that the substantially rod-shaped tensile material 11 is channel steel, but a suspended member using a plate-shaped member (bar-shaped member) such as a steel plate or a carbon fiber sheet as the tensile material 11. The structure B may be configured. Alternatively, the suspended ceiling structure B may be configured by combining a bar-like (plate-like) tension member 11 and a belt-like (tape-like) tension member.

  Further, in the present embodiment, the case-side joint portion 21 of the tensile material end connection means 20 has been described as being fixedly attached to the concrete building case 9 using the anchor bolts 24. However, the concrete building case is provided. A through-bolt may be inserted into a through-hole formed through 9 and the housing-side joint portion 21 may be fixedly attached to the concrete building housing 9 using the through-bolt. Even in this case, the same effect as the present embodiment can be obtained.

  Furthermore, it is only necessary that the end portion of the tensile member 11 can be connected to the concrete building housing 9 via the tensile member end connecting means 20, and the tensile material end connecting means 20 includes at least the anchor bolt 24 ( Or the penetration bolt), the housing side joining part 21, and the tensile material side joining part 30 should just be provided.

  That is, as in the present embodiment, the frame side joint 21 is fixedly installed on the concrete building frame 9 above the ceiling material 6, and the tensile material side joint 30 is integrated with the lower end of the frame side joint 21. When the tensile material end connecting means 20 is configured to project downward from the ceiling material 6 through the space between the end of the ceiling material 6 and the side surface of the building housing 9, the ceiling material 7 includes, for example, a ceiling base 7 and the ceiling material 6. An anchor bolt 24 (or through bolt) is used on the side surface of the concrete building frame 9 on the ceiling back space H side by using a gap formed by removing a part of the ceiling material 6 on the end side of the ceiling 5. Can be easily attached to the housing side joint 21 (tensile material end connection means 20). Thereby, the edge part of the tension | tensile_strength material 11 can be connected to the building frame 9 easily.

  Further, the frame-side joint 21 is fixedly installed on the concrete building frame 9 below the ceiling material 6, and the tensile material-side joint 30 is integrally provided at the upper end of the frame-side joint 21. The end connection means 20 may be configured. And if comprised in this way, the anchor volt | bolt 24 (or penetration bolt) will be installed below the ceiling material 6, and the operation | work in the ceiling back space H will be completely made unnecessary, and the structure side junction part 21 (tensile | tensile_strength) will be easy. Material end connection means 20) can be attached. Thereby, the edge part of the tension | tensile_strength material 11 can be connected to the building frame 9 still more easily.

  Further, the upper end side of the frame side joint portion 21 is fixedly installed on the concrete building frame 9 above the ceiling material 6 and the lower end side is fixedly installed on the concrete building frame 9 below the ceiling material 6. The tension member end connection means 20 may be configured by integrally providing the material side joint portion 30 from the upper end to the lower end intermediate portion of the housing side joint portion 21. Also in this case, for example, a gap formed by removing a part of the ceiling material 6 on the end portion side of the ceiling portion 5 including the ceiling base 7 and the ceiling material 6 is used, and the concrete structure on the ceiling back space H side is used. Anchor bolts 24 (or through bolts) are respectively installed on the side surfaces of the building housing 9 and the building housing 9 below the ceiling material 6 so that the housing-side joint portion 21 (tensile material end connecting means 20) can be easily attached. Can be attached. Thereby, the edge part of the tension | tensile_strength material 11 can be connected to the building frame 9 easily.

  The tensile material end connection means according to the present invention, including the tensile material end connection means 30 of the present embodiment and the tensile material end connection means 30 of the above-described modified example, is the tensile material 11 attached to the ceiling portion 5. Are connected to the tensile material side bonding portion 30, so that at least a part of the tensile material side bonding portion 30 (portion connecting the end portion of the tensile material 11) is more than the ceiling portion 5 (ceiling surface). It is configured to be located below.

  Further, in the present embodiment, the ceiling foundation 7 is configured to include the field edge 1 and the field edge receiver 2, but the ceiling foundation according to the present invention is not necessarily limited to the present embodiment. For example, a plurality of T bars that are suspended and supported by the suspension bolts (suspending members) 4 and arranged in parallel in one horizontal direction T1 at a predetermined interval and extend in the other direction T2 orthogonal to the one direction T1. The ceiling base 7 may be configured to include a (reverse T-shaped support member). That is, the present invention does not need to limit the configuration of the ceiling foundation.

1 Field edge 2 Field edge receiver 3 Superstructure (building frame)
4 Hanging members (hanging bolts)
5 Ceiling part 5a End part 6 Ceiling material (ceiling panel)
7 Ceiling base 9 Building components (building frame)
11 Tension material 11a Side wall portion 11b Connecting portion 12 Bolt insertion hole 20 Tension material end connection means 21 Housing side joint portion 21a Flange 22 Fixing plate portion 23 Anchor bolt insertion hole 24 Anchor bolt 25 Interposing portion 26 Connection portion 27 Engagement Holding piece 28 Engagement part 29 Bolt insertion hole 30 Tensile material side joint part 30a Side wall part 30b Connecting part 31 Bolt insertion hole 32 Bolt insertion hole A Conventional suspended ceiling structure B Suspended ceiling structure H Ceiling back space T1 Horizontal direction (one direction)
T2 lateral direction (other direction)
T3 vertical direction

Claims (5)

In the suspended ceiling structure in which the ceiling material that forms the ceiling surface is attached to the ceiling base that is suspended and supported by the upper structure of the building frame via the hanging member,
The cross section is substantially inverted U disposed below the ceiling material and laterally along the ceiling surface and connected and fixed to the ceiling material and / or the ceiling base from below the ceiling material. A tensile material which is a substantially rod-shaped shaped steel material,
A tensile material end connecting means for joining the end of the tensile material to the building frame,
And the building frame which joins the edge part of the above-mentioned tension material is concrete construction,
The tensile material end connection means is fixed to the concrete building frame using a plurality of anchor bolts or a plurality of through bolts, and is connected to the frame side joint.
A suspended ceiling structure characterized by being provided integrally with the housing-side joint and including a tensile material-side joint to which an end of the tensile material is connected. The suspended ceiling structure according to claim 1,
The tensile material end connecting means is installed such that the frame side joint is fixed to the concrete building frame above the ceiling material, and the tensile material side joint is integrated with a lower end of the frame side joint. A suspended ceiling structure characterized in that the suspended ceiling structure is provided so as to protrude downward from the ceiling material. The suspended ceiling structure according to claim 1,
The tensile material end connecting means is installed such that the frame side joint is fixed to the concrete building frame below the ceiling material, and the tensile material side joint is integrated with an upper end of the frame side joint. Suspended ceiling structure characterized by being provided and configured. The suspended ceiling structure according to claim 1,
The tensile material end connecting means is configured such that the frame-side joint portion has an upper end side of the concrete building frame above the ceiling material and a lower end side of the concrete building frame below the ceiling material. A suspended ceiling structure, wherein the suspended ceiling structure is configured to be fixedly installed, and the tensile material side joint portion is integrally provided from an upper end to a lower end intermediate portion of the housing side joint portion. The suspended ceiling structure according to claim 1 or 2,
The suspension material structure according to claim 1, wherein the tension material end connecting means includes an engagement holding piece that engages and holds an outer peripheral end of a ceiling portion made of the ceiling material and the ceiling base.

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