JP2015021346A - Suspended ceiling reinforcing member and suspended ceiling structure comprising it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suspended ceiling reinforcing member and a suspended ceiling structure comprising it capable of improving aseismatic performance by certainly exerting an effect of a reinforcing brace to certainly suppress horizontal oscillation in a ceiling part upon earthquake, and to provide a comparatively easily applicable reinforcement.SOLUTION: A suspended ceiling reinforcing member is so constructed that: a brace part 16 stands in vertical direction T3 along with a suspended member 4 and being arranged in an attached manner to ceiling base 8 at the lower edge side; and a suspending side connecting mechanism 17 is arranged in an integral manner on the upper edge side of the brace part 16, being engaged on the upper edge side of the suspending member 4, and connecting the upper edge side of the brace part 16 with the upper edge side of the suspending member 4.

Description

  The present invention relates to a member for reinforcing a suspended ceiling and a suspended ceiling structure including the same.

  Conventionally, suspended ceilings are frequently used as ceilings of buildings such as schools, hospitals, production facilities, gymnasiums, pools, airport terminal buildings, office buildings, theaters, cinecones, etc. (see, for example, Patent Document 1 and Patent Document 2). . And in the suspended ceiling (suspended ceiling structure) A, as shown in FIGS. 11 and 12, for example, a plurality of field edges 1 arranged in parallel at a predetermined interval in one horizontal direction T1, and a field edge 1 A plurality of field receivers 2 that are arranged in parallel in the other horizontal direction T2 at predetermined intervals and are integrally connected to a plurality of field edges 1, and the lower ends are connected to the field receiver 2. A plurality of suspension bolts (suspending members) 4 that are fixedly attached to an upper structure (building frame) 3 such as a floor material on the upper floor and the lower surface of the field edge 1 are integrally attached by screwing or the like. And a ceiling panel (ceiling material) 6 that forms a ceiling surface (ceiling part 5).

  For example, as shown in FIG. 13, for example, a suspended ceiling (suspended ceiling structure) A in which a heavy equipment such as a fan filter unit is required to be installed on the ceiling as in a clean room, the horizontal direction A plurality of T bars (supporting members having a reverse T-shaped cross section) 7 that are arranged in parallel with T1 at a predetermined interval and extend in another direction T2 orthogonal to one direction T1, and an upper floor material (upper structure) on the upper end side ) And the like, and a plurality of suspension bolts (suspending members) 4 arranged with the lower end side connected to the T-bar 7 and the T-bar 7 adjacent to each other in one direction T1 are arranged over the ceiling. Some have a ceiling panel 6 that forms a surface (ceiling part 5).

  On the other hand, the suspended ceiling A configured as described above is easy to roll due to the horizontal force acting at the time of the earthquake due to the structure, and the end of the ceiling portion 5 is a building such as a wall, a column, or a beam due to this roll. There was a possibility that the ceiling panel 6 might be damaged or dropped due to collision with the structural members. For this reason, conventionally, as shown in FIGS. 12 and 13, the upper end side is connected to the upper structure 3 or the like, and the lower end side is a ceiling made of the suspension bolt 4, the field edge 1, the field edge receiver 2, the T bar 7, and the like. A reinforcing brace 9 is provided in connection with the base 8 so as to suppress the rolling of the ceiling portion 5 including the ceiling base 8 and the ceiling panel 6 during an earthquake.

JP 2008-121371 A JP 2005-350950 A

  Here, for example, as shown in FIGS. 12 and 13, the reinforcing brace 9 is connected to the vicinity of the upper end (near the suspension base) of one suspension bolt 4 of the adjacent suspension bolt 4 and the lower end to the other. There is a case where the suspension bolt 4 is connected in the vicinity of the lower end of the suspension bolt 4 and arranged in a square shape.

  However, when the reinforcing brace 9 is obliquely arranged in a square shape in this way, the proof strength of the reinforcing brace 9 depends on the compression proof strength of the suspension bolt 4, and it is difficult to obtain sufficient proof strength and reinforcing effect. There was a problem.

  That is, a large-scale earthquake or the like occurs and an external force acts on the reinforcing brace 9 and simultaneously a compressive force acts on the suspension bolt 4, and the bending force of the suspension bolt 4 reduces the external force borne by the reinforcement brace 9. End up.

  On the other hand, with the bending deformation of the suspension bolt 4, an excessive external force acts on the reinforcing brace 9, and the reinforcing brace 9 is buckled, and the proof stress is greatly and suddenly lowered, so that the ceiling panel 6 and the ceiling base are lowered. 8 may be damaged or dropped.

  On the other hand, it has also been proposed to stiffen the suspension bolt 4 in the compression direction by, for example, covering the suspension bolt 4 with a square steel, but it takes a lot of labor, labor and time to install the suspension bolt 4 with the square steel. Will be needed. Further, since it is necessary to order and obtain a small lot of square steel as a dedicated member for reinforcing the suspended ceiling, there is also a problem in that the cost of reinforcement measures and measures for improving seismic performance are increased.

  For this reason, for this type of suspended ceiling, it is possible to reliably exert the effect of the reinforcing brace 9, further improve the earthquake resistance, and more reliably prevent the ceiling from dropping from the viewpoint of protecting human life, The development of a method that can easily perform the construction has been strongly desired.

  In view of the above circumstances, the present invention makes it possible to reliably improve the seismic performance by demonstrating the effect of the reinforcing brace, to surely suppress the rolling of the ceiling part during an earthquake, and to reinforce relatively easily. An object of the present invention is to provide a suspended ceiling reinforcing member capable of taking measures and a suspended ceiling structure including the same.

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

  The suspended ceiling reinforcing member of the present invention includes a ceiling base supported by being suspended and supported by a plurality of suspension members having upper ends connected to the upper structure, a plate-like ceiling material that is attached to the ceiling base and forms a ceiling surface, A member for reinforcing a suspended ceiling comprising an upper structure on the upper structure and a reinforcing brace provided obliquely by connecting the lower end to the ceiling base directly or indirectly, respectively. And a brace part that is provided with a lower end side connected to the ceiling base, and is provided integrally with the upper end side of the brace part, and is associated with the upper end side of the suspension member. And a suspension side connection mechanism for connecting the upper end side of the brace part to the upper end side of the suspension member, and the suspension side connection mechanism is integrally disposed on the upper end side of the brace part. Brace side connection support and front The brace-side connection support portion is supported by being connected to the brace-side connection support portion so as to be rotatable and detachable around a rotation shaft extending in one lateral direction, and in a state of being erected in the vertical direction. Projecting from the support portion toward the suspension member in the other direction perpendicular to the one direction, the suspension member is guided by the suspension member and movably engaged in the vertical direction. It is characterized by comprising a suspension member engagement holding portion for holding the suspension member.

  In the present invention, the suspension member engagement holding portion is rotatably and detachably supported by the brace side connection support portion integrally disposed on the upper end side of the brace portion, and the suspension member engagement holding is performed. While the part is guided by the suspension member, the suspension member is engaged with the suspension member so as to be movable in the vertical direction. For this reason, the suspension member engagement holding portion is engaged with the lower end side of the suspension member closest to the connection portion where the lower end side of the reinforcing brace is connected to the ceiling base, and this suspension member engagement retention portion is further connected to the upper end of the brace portion. It is attached to the brace-side connection support provided on the side so that it can freely rotate. When the operator operates to lift the brace upward, it is guided by the suspension member while rotating, and the suspension member engagement holding portion is moved upward. The brace part (suspended ceiling reinforcing member) can be erected and installed along the suspension member while being slid. Then, with the brace portion standing upright in this way, the lower end side of the brace portion is connected to the ceiling base by, for example, bolting, so that the brace portion (suspended ceiling reinforcing member) is connected to the upper end side of the brace portion. The side connection mechanism can be installed along the suspension bolt by connecting the lower end side to the ceiling base and the suspension base (upper end side of the suspension bolt).

  Further, in the suspended ceiling reinforcing member of the present invention, the brace-side connection support portion protrudes in the other direction in a state in which the brace portion is erected in the vertical direction along the suspension member, and is attached to the suspension member. It is desirable to provide a rotation restricting portion that restricts the rotation of the suspension member engagement holding portion by contact and holds the suspension member together with the suspension member engagement retention portion.

  In this invention, the brace portion (suspending ceiling reinforcing member) is erected and arranged along the suspension member while being guided by the suspension member while rotating and sliding the suspension member engagement holding portion upward. At the same time, the rotation of the suspension member engagement holding portion is restricted by the rotation restriction portion provided in the brace-side connection support portion. Thereby, in a state where the brace portion is erected in the vertical direction along the suspension member, the upper end side of the brace portion is moved to the upper end side (suspending side) of the suspension member by the rotation restricting portion together with the suspension member engagement holding portion. It is possible to securely hold and connect.

  The suspended ceiling structure of the present invention includes a ceiling base suspended from and supported by a plurality of suspension members having upper ends connected to the upper structure, a plate-like ceiling material that is attached to the ceiling base to form a ceiling surface, and the upper structure A suspension ceiling structure including a reinforcing brace that is obliquely connected to the ceiling base directly or indirectly by connecting the lower end side directly or indirectly, and includes any one of the above-described suspended ceiling reinforcing members. It is characterized by being.

  In this invention, it becomes possible to obtain the effect by the above-mentioned suspended ceiling reinforcing member.

  In the suspended ceiling reinforcing member (and the suspended ceiling structure provided with the same) of the present invention, for example, only the ceiling material near the connection portion between the lower end side of the reinforcing brace obliquely arranged in a square shape and the ceiling base is removed. From the ceiling scaffold, the suspension ceiling reinforcing member can be easily installed along the suspension member (suspending bolt). That is, it is possible to install the suspended ceiling reinforcing member along the hanging member without requiring a high place work at the hanging base, and the brace portion and the reinforcing brace of the suspended ceiling reinforcing member make a letter-shaped brace. Can be configured easily.

 By installing the suspension ceiling reinforcing member in this way, a large-scale earthquake or the like occurs and an external force acts on the reinforcement brace, and at the same time, a compression force acting on the suspension member can be borne by the suspension ceiling reinforcement member. It becomes possible. This eliminates the inconvenience that the conventional suspension member is bent and deformed to reduce the external force applied to the reinforcing brace, or the suspension member is bent and deformed to cause excessive external force to act on the reinforcement brace. Is possible.

  Therefore, by using the suspended ceiling reinforcing member of the present invention, it is possible to easily and surely reinforce the vertical direction along the hanging member, reliably exhibiting the effect of the reinforcing brace, and greatly improve the earthquake resistance performance. Can be improved.

  At this time, since a commercial general-purpose material can be applied to the brace portion of the suspended ceiling reinforcing member, the material can be easily obtained as compared with the case of using conventional square steel. This makes it possible to carry out reinforcement measures and measures for improving seismic performance at low cost.

1 is a side sectional view showing a suspended ceiling structure and a suspended ceiling reinforcing member according to an embodiment of the present invention. It is a sectional side view which shows the member for reinforcing a suspended ceiling concerning one Embodiment of this invention. It is a side view which shows the brace side connection support part of the suspension origin side connection mechanism of the member for suspension ceiling reinforcement concerning one Embodiment of this invention. FIG. 4 is a view taken along line X1-X1 in FIG. 3. FIG. 4 is a view taken along line X2-X2 in FIG. 3. FIG. 4 is a view taken along line X3-X3 in FIG. 3. It is a side view which shows the suspension member engagement holding | maintenance part of the suspension origin side connection mechanism of the member for suspension ceiling reinforcement concerning one Embodiment of this invention. FIG. 8 is a view taken along line X1-X1 in FIG. 7. It is a figure which shows the state which has installed the member for reinforcing a suspended ceiling concerning one Embodiment of this invention. It is the figure used for description of the superiority of the suspended ceiling structure concerning one embodiment of the present invention over the conventional suspended ceiling structure. It is a perspective view from the ceiling surface side of the conventional suspended ceiling structure. It is a side view of the conventional suspended ceiling structure. It is a perspective view from the ceiling back side of the other conventional suspended ceiling structure.

  Hereinafter, with reference to FIG. 1 to FIG. 10 (and FIG. 11 and FIG. 12), a suspended ceiling reinforcing member and a suspended ceiling structure provided with the same according to an embodiment of the present invention will be described.

  The suspended ceiling (suspended ceiling structure) B of the present embodiment is the same as the suspended ceiling A (see FIGS. 11 and 12), and as shown in FIG. 1, a field edge 1, a field edge receiver 2, a suspension member 4, and a ceiling material. 6 and a reinforcing brace 9.

  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 clip 10 at an intersection that intersects the field edge 1.

  The suspension member 4 is a suspension bolt that is formed in a cylindrical bar shape and has a male screw thread on the outer peripheral surface, and is fixed to an upper structure 3 such as an upper floor using a fixture such as an anchor. A plurality of lower ends are connected to the field receiver 2 by using the hanger 11. Further, the plurality of suspension members 4 are dispersedly arranged at a predetermined interval.

The ceiling material (ceiling panel) 6 is formed, for example, by laminating two boards together and integrally formed, and is formed with a weight of about 20 kg per 1 m ² together with the weight of the 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.

  The reinforcing brace 9 is, for example, a grooved steel having a U-shaped cross section, and the upper end side thereof is near the upper end side (near the suspension base) of one of the hanging bolts 4 and the lower end side. Is connected obliquely to the vicinity of the lower end side of the suspension bolt 4 (such as the field receiver 2 near the hanger 11). That is, the reinforcing brace 9 is obliquely connected with the upper structure 3 at the upper end side and the ceiling base 8 at the lower end side directly or indirectly.

  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. Further, the ceiling base 8 is formed by the field edge 1 and the field edge receiver 2, the ceiling surface 6 of the lower floor is formed by the ceiling material 6 attached to the ceiling base 8, and the ceiling portion 5 is formed by the ceiling base 8 and the ceiling material 6. Is formed. Then, during an earthquake or the like, the lateral force of the ceiling portion 5 is suppressed by transmitting an external force acting on the ceiling portion 5 including the ceiling base 8 and the ceiling material 6 to the building component (building frame) by the reinforcing brace 9.

  On the other hand, in the suspended ceiling B of the present embodiment, as shown in FIG. 1, the lower end is connected to the ceiling base 8 near the lower end of the suspension member 4 positioned in the immediate vicinity of the connecting portion 12 to which the lower end side of the reinforcing brace 9 is connected. Along the suspension bolt 4, a suspended ceiling reinforcing member 15 is extended (stands up) in the vertical direction T3.

  Further, as shown in FIG. 1 and FIG. 2, the suspension ceiling reinforcing member 15 is formed using, for example, a cross-section groove-shaped steel of a general-purpose material in the city, and extends in the vertical direction along the suspension bolt 4. The brace portion 16 is provided on the upper end side of the brace portion 16 that is erected at T3 and is connected to the ceiling base 8 at the lower end side, and is engaged with the upper end side of the suspension bolt 4 while being integrally provided. And a suspension base connection mechanism 17 that connects the top end side of the brace portion 16 to the top end side (suspension base side) of the suspension bolt 4.

  The brace portion 16 is formed by providing a lower bolt insertion hole for bolting to the ceiling base 8 such as the field edge receiver 2 on the lower end side, and the suspension side connection mechanism 17 is detachably integrated on the upper end side. An upper bolt insertion hole 16a (see FIG. 2) for bolting is provided.

  On the other hand, the suspension side connection mechanism 17 is made of metal, and, as shown in FIG. 2, the bolt is inserted into the upper bolt insertion hole 16a of the brace part 16, and the nut is screwed to the upper end side of the brace part 16. The brace-side connection support 18 and the brace-side connection support 18 that are detachably integrated with the brace-side connection support 18 are rotatable around a rotation axis O1 extending in one lateral direction (the other direction) T2. In addition, in a state where it is detachably connected and supported, and is erected in the vertical direction T3, the other direction in the lateral direction (one And a suspension member engagement holding portion 19 projecting in the direction T1.

  Moreover, the brace side connection support part 18 of the suspension side connection mechanism 17 of this embodiment is formed in a substantially U shape as shown in FIGS. 3 to 6, and the bolts are respectively inserted into the pair of side wall parts 18a and 18b. A hole 18c is formed through. Further, a bolt insertion hole 18e penetrating from the lower surface to the upper surface is formed in the bottom plate portion 18d. As shown in FIG. 2, the bolt insertion hole 18e and the upper bolt insertion hole 16a of the brace portion 16 are communicated with each other. The brace-side connection support portion 18 is detachably connected to the upper end side of the brace portion 16 by inserting bolts into the insertion holes 18e and 16a and screwing the nuts.

  Further, as shown in FIGS. 2 and 3 to 6, the brace-side connection support portion 18 protrudes in the other direction T <b> 1 and contacts the suspension bolt 4 to rotate the suspension member engagement holding portion 19. And a rotation restricting portion 20 that holds the suspension bolt 4 together with the suspension member engagement holding portion 19 is provided. That is, in the state where the suspension ceiling reinforcing member 15 is erected along the suspension bolt 4 in the vertical direction T3, the rotation restricting portion 20 and the bolt insertion hole 18e (and thus the brace portion 16). ) In the horizontal direction T1 and the suspension member engagement holding portion 19 and the suspension bolt 4 so as to be held.

  In this embodiment, the rotation restricting portion 20 is provided so as to protrude from the one side end portion of the bottom plate portion 18d of the brace-side connection support portion 18 to the outside in the lateral direction T1 along the upper surface and the lower surface of the bottom plate portion 18d. Yes. Furthermore, the rotation restricting portion 20 of the present embodiment extends from the one end portion of the bottom plate portion 18d so as to protrude in the lateral direction T1 and bends vertically upward from the protruding direction tip of the protruding portion 20a. The upward extending length defines a tiltable tilt angle at the time of attaching the suspension ceiling reinforcing member, and includes a bolt holding portion 20b for holding the suspension bolt 4, and is L-shaped. Is formed.

  In the present embodiment, the rotation restricting portion 20 is integrally formed with the brace side connection support portion 18. However, the rotation restricting portion 20 is a separate member from the brace side connection support portion 18, and the brace side You may form so that it may attach to the connection support part 18 so that attachment or detachment is possible.

  As shown in FIGS. 2, 7, and 8, the suspension member engagement holding portion 19 includes a pair of side wall portions 19 a and 19 b and a connection holding portion 19 c and is formed in a U shape. A bolt insertion hole 19d is formed through each 19b. Further, the suspension member engaging and holding portion 19 is formed in an arc shape having a curvature substantially equal to the outer peripheral surface of the suspension bolt 4 so that the connection holding portion 19 c is along the outer peripheral surface of the cylindrical rod-shaped suspension bolt 4. ing. Further, the suspension member engagement holding portion 19 has a width dimension d1 (see FIG. 8) between the outer surfaces of the pair of side wall portions 19a and 19b so that the inner surface of the pair of side wall portions 18a and 18b of the brace-side connection support portion 18 It is formed smaller than the width dimension d2 (see FIG. 5).

  As shown in FIG. 2 (FIGS. 3 to 8), the suspension member engagement holding portion 19 is formed by connecting the pair of side wall portions 19a and 19b between the pair of side wall portions 18a and 18b of the brace-side connection support portion 18. The brace-side connection support 18 and the bolt insertion holes 18c, 19c formed in the side walls 18a, 18b, 19a, 19b are communicated with each other, bolts are inserted, nuts are screwed, and the brace side It is detachably connected to the connection support portion 18 and is rotatable around the bolt axis.

  Further, in this state, the pair of side wall portions 19a and 19b protrudes in the lateral direction T1 from the one side end portion of the bottom plate portion 18d of the brace-side connection support portion 18, and thus the suspension member engagement holding portion 19 is connected. The holding part 19c is arranged on the outer side in the horizontal direction T1.

  The suspension bolt 4 is inserted between the inner surface of the connection holding portion 19c of the suspension member engagement holding portion 19 and the lateral direction T1 between the rotation restricting portion 20 of the brace-side connection support portion 18 and the connection holding portion 19c. Is formed along the outer periphery of the cylindrical rod-shaped suspension bolt 4, and the suspension bolt 4 is inserted therethrough and engaged so as to enclose and suspend the suspension bolt 4. As a result, the suspension side connection mechanism 17 (the suspension member engagement holding portion 19) is guided by the suspension bolt 4 and is movably engaged in the vertical direction T3 to hold the suspension bolt 4, and the suspension member engagement. The holding portion 19 and the rotation restricting portion 20 of the brace side connection support portion 18 are engaged so that the suspension bolt 4 is sandwiched, and the suspension side connection mechanism 17 and the upper end side of the suspension ceiling reinforcing member 15 are connected to the suspension bolt 4. Is done.

  Further, in the suspended ceiling reinforcing member 15 of the present embodiment, the brace portion is formed by inserting a bolt through a lower bolt insertion hole (not shown) provided on the lower end side of the brace portion 16 and screwing a nut. The lower end side of 16 is connected to the ceiling base 8 such as the field edge receiver 2 or the like.

  When the suspended ceiling reinforcing member 15 of the present embodiment is installed as described above to further improve the seismic performance of the suspended ceiling B, first, as shown in FIG. 9 (and FIG. 2), The ceiling panel 6 in the vicinity of the suspension bolt 4 is removed locally (partially) so that the suspension bolt 4 positioned in the immediate vicinity of the connection portion 12 connected to the lower end side of the reinforcing brace 9 installed in the shape of a square. .

  Next, the worker M attaches the suspension side connection mechanism 17 to the suspension bolt 4 using a temporary scaffold or a ceiling scaffold. At this time, as shown in FIG. 2, for example, a brace-side connection support portion 18 is connected in advance to the upper end of the brace portion 16 and is wound around the lower end side of the suspension bolt 4 (inclusive). The suspension member engagement holding portion 19 is attached and the suspension member engagement retention portion 19 is connected to the brace side connection support portion 18 with a bolt. Thus, the suspension bolt 4 is inserted between the suspension member engagement holding portion 19 and the rotation restricting portion 20 of the brace side connection support portion 18, and the brace is connected to the suspension bolt 4 via the suspension side connection mechanism 17. The upper end side of the part 16 is connected.

  On the other hand, at this time, the rotation restricting portion 20 of the brace-side connection support portion 18 bends vertically upward from the protruding portion 20a and the tip of the protruding portion 20a. A bolt holding portion 20 b that defines a tiltable tilt angle at the time of attaching the member 15 and holds the suspension bolt 4 is provided. For this reason, as shown in FIG. 2, when attaching the suspension side connection mechanism 17 of the suspension ceiling reinforcing member 15 to the lower end side of the suspension bolt 4 as described above, as shown in FIG. Depending on the length, the worker M can perform the attachment work while tilting the suspension ceiling reinforcing member 15 (brace portion 16) with respect to the suspension bolt 4.

  When the worker M pushes the suspended ceiling reinforcing member 15 (brace portion 16) upward from the inclined state, the suspension member engagement holding portion 19 and the rotation restricting portion 20 of the brace-side connection support portion 18 are moved. Guided by the suspension bolt 4 inserted between them, the suspension side connection mechanism 17 slides upward. Moreover, the inclination angle of the brace part 16 with respect to the suspension bolt 4 becomes smaller as the suspension side connection mechanism 17 advances above the suspension bolt 4, and the suspension ceiling reinforcing member 15 and the brace part 16 become the suspension bolt 4. (The angle of the brace portion 16 with respect to the suspension bolt 4 becomes 0 degree) and the suspension side connection mechanism 17 is disposed at a predetermined position on the upper end side (the suspension side) of the suspension bolt 4. The

  In this way, the brace portion 16 is erected along the suspension bolt 4, the suspension side connection mechanism 17 is disposed at a predetermined position on the upper end side of the suspension bolt 4, and the suspension member engagement holding portion 19 and the brace side are disposed. The suspension bolt 4 and the suspension side connection mechanism 17 are engaged with each other by being sandwiched between the rotation restricting portions 20 of the connection support portion 18. That is, in the state where the brace portion 16 is erected in the vertical direction T3 along the suspension bolt 4, the rotation restricting portion 20 contacts the suspension bolt 4 even if deformation occurs. The rotation of the engagement holding portion 19 is restricted, and the suspension bolt 4 is securely held by the suspension member engagement holding portion 19 and the rotation restriction portion 20. Thus, the upper end side of the suspension ceiling reinforcing member 15 can be connected to the suspension source on the upper end side of the suspension bolt 4 simply by sliding the suspension ceiling reinforcing member 15 upward.

  In addition, the lower end side of the brace portion 16 whose upper end side is connected to the suspension bolt 4 is bolted to the field receiver 2 of the ceiling base 8 as described above, thereby hanging along the suspension bolt 4 as shown in FIG. The ceiling reinforcing member 15 (brace portion 16) can be fixed and installed in a standing state.

  Therefore, in the suspended ceiling reinforcing member 15 (and the suspended ceiling structure B) of the present embodiment, the suspension member engagement holding portion 19 is provided on the brace side connection support portion 18 that is integrally disposed on the upper end side of the brace portion 16. While being supported rotatably and detachably, the suspension member engagement holding portion 19 is engaged with the suspension bolt 4 so as to be movable in the vertical direction T3 while being guided by the suspension bolt 4. For this reason, the suspension member engagement holding part 19 is engaged with the lower end side of the suspension bolt 4 nearest to the connection part 12 where the lower end side of the reinforcing brace 9 is connected to the ceiling base 8, and this suspension member engagement holding part 19 is rotatably attached to the brace-side connection support portion 18, and when the operator M operates to lift the brace portion 16 upward, the suspension bolt is guided by the suspension bolt 4 while rotating, and the suspension member engagement holding portion 19. The brace portion 16 (suspended ceiling reinforcing member 15) can be erected and installed along the suspension bolt 4 while sliding the frame upward.

  Then, with the brace portion 16 standing upright in this manner, the lower end side of the brace portion 16 is connected to the ceiling base 8 by, for example, bolting, so that the brace portion 16 (suspended ceiling reinforcing member 15) is The upper end side can be installed along the suspension bolt 4 by connecting the upper end side to the suspension base (upper end side of the suspension bolt 4) and the lower end side to the ceiling base 8 by the suspension base connection mechanism 17.

  Accordingly, in the suspended ceiling reinforcing member 15 (and the suspended ceiling structure B including the same) according to the present embodiment, for example, the connection between the lower end side of the reinforcing brace 9 obliquely provided in a square shape and the ceiling base 8 Only the ceiling panel 6 in the vicinity of the unit can be removed, and the suspended ceiling reinforcing member 15 can be easily installed along the suspension bolt 4 from the ceiling scaffold. That is, it is possible to install the suspended ceiling reinforcing member 15 along the hanging member without requiring a high place work at the hanging base, and the brace portion 16 and the reinforcing brace 9 of the suspended ceiling reinforcing member 15 A character-shaped brace can be easily configured.

 By installing the suspension ceiling reinforcing member 15 in this way, a large-scale earthquake or the like occurs and an external force acts on the reinforcement brace 9 and simultaneously a compressive force acting on the suspension bolt 4 is applied by the suspension ceiling reinforcement member 15. It becomes possible to bear. As a result, the conventional suspension bolt 4 is bent and deformed so that the external force applied to the reinforcing brace 9 is reduced. Conversely, the suspension bolt 4 is bent and deformed and an excessive external force acts on the reinforcement brace 9. Can be eliminated.

Here, for example, as shown in FIG. 10, when there is only a normal U-shaped reinforcing brace 9 (FIG. 10A), the strength of the U-shaped reinforcing brace 9 is the compression of the suspension bolt 4. It depends on the proof stress, and if a suspension bolt 4 having a diameter of about 9 mm (3 minutes) is used, it can only bear a horizontal force (inertial force) of about 110 N.
On the other hand, when the suspended ceiling reinforcing member 15 is installed (FIG. 10B), the braces 9 and 15 are arranged in a letter shape, and the suspension arranged in the vertical direction T3. The horizontal force that can be borne by the compression strength of the ceiling reinforcing member 15 (brace portion 16) is determined. And if the suspended ceiling reinforcing member 15 provided with the C-40 × 20 × 1.6 mm channel steel as the brace portion 16 is installed, the horizontal force that can be borne becomes about 918N.

  Therefore, by using the suspended ceiling reinforcing member 15 of the present embodiment, it is possible to easily and surely reinforce the vertical direction T3 along the suspension bolt 4, and to reliably exhibit the effect of the reinforcing brace 9. It will be possible to greatly improve the seismic performance.

  Further, at this time, since a commercial general-purpose material can be applied to the brace portion 16 of the suspended ceiling reinforcing member 15, the material can be easily obtained as compared with the case of using a conventional square steel. This makes it possible to carry out reinforcement measures and measures for improving seismic performance at low cost.

  As mentioned above, although one embodiment of the suspended ceiling reinforcing member and the suspended ceiling structure provided with the same according to the present invention has been described, the present invention is not limited to the above-described embodiment, and does not depart from the spirit thereof. It can be changed as appropriate.

  For example, in the present embodiment, the suspended ceiling structure has a ceiling base 8 in which the field edge 1 and the field edge receiver 2 are assembled in a lattice shape, and a ceiling member that is attached to the ceiling base 8 by screwing to form a ceiling surface. However, the suspended ceiling reinforcing member 15 of the present embodiment is also applied to a suspended ceiling structure in which the ceiling base 8 is formed by the T bar 7 shown in FIG. Thus, it is possible to obtain the same effect as that of the present embodiment. That is, the ceiling foundation according to the present invention need not be particularly limited in configuration as in the present embodiment.

1 Field edge 2 Field edge receiver 3 Superstructure 4 Suspension bolt (suspending member)
5 Ceiling part 6 Ceiling panel (ceiling material)
7 T-bar 8 Ceiling base 9 Reinforcement brace 10 Clip 11 Hanger 12 Reinforcement brace connection 15 Suspended ceiling reinforcement member 16 Brace 16a Upper bolt insertion hole 17 Suspension side connection mechanism 18 Brace side connection support 18a Side wall 18b Side wall Part 18c Bolt insertion hole 18d Bottom plate part 18e Bolt insertion hole 19 Suspension member engagement holding part 19a Side wall part 19b Side wall part 19c Connection holding part 19d Bolt insertion hole 20 Rotation restricting part 20a Projection part 20b Bolt holding part A Conventional suspension ceiling Structure B Suspended ceiling structure O1 Rotating axis T1 One direction (the other direction in the horizontal direction)
T2 Other direction (one direction in the horizontal direction)
T3 vertical direction

Claims (3)

A ceiling base suspended from and supported by a plurality of suspension members connected at the upper end to the upper structure, a plate-like ceiling material attached to the ceiling base to form a ceiling surface, and an upper end of the upper structure, the ceiling base A member for reinforcing a suspended ceiling comprising a reinforcing brace that is obliquely connected to each of the lower ends thereof directly or indirectly,
A brace portion that is erected in the vertical direction along the suspension member, and that is disposed by connecting a lower end side to the ceiling base,
And a suspension-side connection mechanism that is integrally provided on the upper end side of the brace part and engages with the upper end side of the suspension member to connect the upper end side of the brace part to the upper end side of the suspension member. ,
The suspension base side connection mechanism is a brace side connection support portion integrally disposed on the upper end side of the brace portion,
The brace side connection support part is supported by being connected to the brace side connection support portion so as to be rotatable and detachable about a rotation shaft extending in one direction in the horizontal direction. Projecting from the connection support portion toward the suspension member in the other direction perpendicular to the one direction, the suspension is guided by the suspension member and movably engaged in the vertical direction. A suspension ceiling reinforcing member, comprising: a suspension member engagement holding portion for holding a member. The suspended ceiling reinforcing member according to claim 1,
The brace-side connection support part projects in the other direction with the brace part standing up and down along the suspension member, and comes into contact with the suspension member so that the suspension member engagement holding part A suspension ceiling reinforcing member, characterized in that a rotation restricting portion for restricting the rotation and holding the suspension member together with the suspension member engagement holding portion is provided. A ceiling base suspended from and supported by a plurality of suspension members connected at the upper end to the upper structure, a plate-like ceiling material attached to the ceiling base to form a ceiling surface, and an upper end of the upper structure, the ceiling base A suspension ceiling structure comprising a reinforcing brace that is obliquely connected to each other directly or indirectly at the lower end side,
A suspended ceiling structure comprising the suspended ceiling reinforcing member according to claim 1.

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