JP5921184B2 - Ceiling structure - Google Patents

Description

  The present invention relates to a ceiling structure in which a ceiling surface is formed by a suspended ceiling board.

  Patent Document 1 discloses a suspended ceiling in which a ceiling board is attached to a ceiling structure frame suspended by suspension bolts. For example, in a building such as a music hall or a movie theater, the ceiling board of such a suspended ceiling is placed in an inclined state and bent by a plurality of ceiling boards in order to exert an excellent acoustic effect. Often forms a ceiling surface.

  However, since the suspended ceiling board is shaken at the time of an earthquake, this shake must be suppressed so that the ceiling board does not fall. In particular, this problem becomes prominent during a large earthquake.

JP 2007-146484 A

  This invention considers the fact which concerns, and makes it a subject to provide the ceiling structure which can reduce the shaking which arises in the suspended ceiling board.

  According to the first aspect of the present invention, there is provided a support member that is spanned by a beam member and connected to the beam member, and a receiving member that is suspended from the support member and to which a ceiling board is attached. It is a ceiling structure which has a suspension member which suspends, a reinforcement pipe which connects a plurality of above-mentioned receiving members, and a pipe brace which connects the reinforcement pipe and the support member.

  According to the first aspect of the present invention, the vibration at the time of an earthquake that occurs in the suspended ceiling board can be suppressed by the pipe brace that connects the reinforcing pipe and the support member. In particular, the complicated vibration at the time of an earthquake that occurs on the ceiling board that is suspended with the ceiling board tilted can be suppressed by a pipe brace that connects the reinforcing pipe and the support member.

  The invention according to claim 2 connects the reinforcing pipes adjacent in plan view via a bent portion of a ceiling bent surface formed by the adjacent ceiling boards suspended by tilting at least one of the reinforcing boards. It has a connecting pipe that forms a ladder structure with the pipe.

  In the invention according to claim 2, a plurality of receiving members are connected and integrated by a reinforcing pipe, and the adjacent reinforcing pipes are connected in plan view via a bent portion of a bent ceiling surface formed by the adjacent ceiling board. By connecting together with a reinforcement pipe and a connecting pipe to form a ladder structure and improving the rigidity of the ceiling itself, it is possible to increase the strength near the bent part of the ceiling bending surface, and to integrate multiple ceiling boards By forming one integrated ceiling bending surface having a ridgeline, it is possible to suppress the shaking that occurs in individual ceiling boards.

  The invention according to claim 3 has a reinforcing plate for connecting the ends of the adjacent ceiling boards.

  In invention of Claim 3, the connection part by which the edge parts of an adjacent ceiling board are connected can be reinforced.

  Since the present invention is configured as described above, it is possible to reduce the shaking generated on the suspended ceiling board.

It is a side view which shows the ceiling structure which concerns on this embodiment. It is a perspective view which shows the supporting member which concerns on this embodiment. It is sectional drawing which shows the 1st connection mechanism which concerns on this embodiment. It is AA sectional drawing of FIG. It is a perspective view which shows the reinforcement structure which concerns on this embodiment. It is sectional drawing which shows the upper hanging hardware which concerns on this embodiment. It is a BB arrow line view of FIG. It is a side view which shows the reinforcement structure which concerns on this embodiment. It is a side view which shows the lower hanging hardware which concerns on this embodiment. It is CC arrow line view of FIG. It is a perspective view which shows the pipe brace which concerns on this embodiment. It is a perspective view which shows the 2nd connection mechanism which concerns on this embodiment. It is a side view which shows the modification of the reinforcement structure which concerns on this embodiment. It is a front view which shows the modification of the lower hanging hardware which concerns on this embodiment.

  A ceiling structure according to an embodiment of the present invention will be described with reference to the drawings.

  In the side view of FIG. 1, a part of the roof of the building is shown. In the ceiling structure 10, a plurality of beam members 16 are suspended and supported substantially horizontally on a structure 14 provided on a roof portion of a building by a suspension column 12 made of a shape steel. The beam member 16 is bridged between the lower ends of the suspension columns 12 arranged adjacent to each other. In the following description, the beam length direction of the beam member 16 is the X direction, and the horizontal direction orthogonal to the X direction is the Y direction (not shown).

  The structure 14 is configured by arranging a plurality of frame beams 18 and 20 made of shape steel in a lattice shape in a plan view. The frame beam 18 and the frame beam 20 are arranged and joined so as to be orthogonal to each other in plan view.

  The suspension column 12 has an upper end portion rigidly joined to the lower surface of the frame beam 20 and a lower end portion rigidly joined to the end portion of the beam member 16. In addition, a pair of brace members 24 made of section steel are diagonally connected to the frame 22 composed of the adjacent column struts 12, the connecting beam 52 made of the shape steel connecting the upper ends of the adjacent column supports 12, and the beam member 16. It is provided so as to intersect with the upper side, and is reinforced against shear deformation generated in the frame 22. That is, the beam member 16 is firmly supported by the structure 14.

  As shown in the perspective view of FIG. 2, a plurality of beam members 16 are arranged substantially parallel to the Y direction, and a support member 26 is bridged over the beam member 16, and the cross-sectional view of FIG. As shown, the support member 26 is coupled to the beam member 16 by the first coupling mechanism 28.

  As shown in FIG. 2, a suspension member 32 is suspended from the support member 26. The suspension member 32 has an upper hanger 30 provided at the upper end connected to the support member 26 and fixed thereto. Further, as shown in the perspective view of FIG. 5, the suspension member 32 connects the lower hanging hardware 34 provided at the lower end to a field edge receiving material 38 as a receiving member to which the ceiling board 36 is attached. The ceiling board 36 is suspended in an inclined state. The ceiling boards 36 are arranged adjacent to each other at an angle so as to form a downward bent ceiling surface 40. Adjacent ceiling boards 36 are both slanted and suspended.

  The beam member 16 includes a pair of structural members 42 and 44 made of C-shaped steel, as shown in FIG. 4 which is a cross-sectional view taken along the line AA of FIG. The structural members 42 and 44 are arranged so that the outer surfaces of the webs 46 and 48 face each other with a gap 50 therebetween.

  As shown in FIGS. 3 and 4, the first connecting mechanism 28 includes a steel connecting member 54, a steel receiving plate 56, a bolt 58 as a fastening member, and a fixing bolt for the support member 26 and the vibration isolating rubber 90. As a bolt 60.

  The connecting member 54 is a hat-shaped member that includes a portal portion 62 and a pair of flange portions 64A and 64B that project substantially horizontally from the lower ends of the legs 62A and 62B of the portal portion 62 to the left and right sides. is there. That is, the portal portion 62 is provided integrally with the flange portions 64A and 64B between the pair of flange portions 64A and 64B.

  The connecting member 54 is installed on the upper surface of the beam member 16 by installing flange portions 64 </ b> A and 64 </ b> B on the upper surface of the beam member 16. In this state, a rectangular parallelepiped shape as an insertion portion into which a support member 26 made of a steel square pipe having a rectangular structural cross section is inserted between the upper surface of the beam member 16 and the inner peripheral surface of the portal portion 62. The passage 66 is formed.

  The receiving plate 56 is installed on the lower surface of the beam member 16, and the beam member 16 is vertically sandwiched between the flange portions 64 </ b> A and 64 </ b> B and the receiving plate 56. In the state of FIGS. 3 and 4, the flange portions 64 </ b> A and 64 </ b> B and the receiving plate 56 positioned in front of and behind the portal portion 62 with respect to the beam length direction of the beam member 16 so as to communicate with the gap 50, Vertical through holes 68A, 68B, 70A, and 70B are formed. Then, the bolts 58 are passed through from the bottom to the top in the order of the through holes 70A and 70B, the gap 50, and the through holes 68A and 68B, and the nuts 72 are screwed into the ends of the bolts 58 so that the receiving plate 56 and the flanges 64A and 64B are connected. Link. Further, by tightening the nut 72, the flange portions 64A and 64B and the receiving plate 56 are pressed against the beam member 16 from above and below to be fixed.

  As shown in FIG. 3, vertical through holes 74 </ b> A and 74 </ b> B are formed on the upper surface and the lower surface of the support member 26 inserted into the passage 66 so that the structural cross section is vertically long, and the ceiling of the portal portion 62 is formed. A vertical through hole 78 is formed in the portion 76. Then, the bolts 60 are passed through from the bottom to the top in the order of the through holes 74B and 74A, and the bolts 60 are fixed to the support member 26 by tightening the nuts 80 screwed into the ends of the bolts 60 downward. Further, the bolt 60 is passed through the through-hole 78 from below to above, and the ceiling portion 76 of the gate-shaped portion 62 is vertically sandwiched between the nut 82 and the nut 80 screwed into the end portion of the bolt 60. A rubber bushing 86 is disposed between the provided washer 84 and the lower surface of the ceiling portion 76, and an anti-vibration rubber 90 as an elastic body is provided between the washer 88 provided on the lower surface of the nut 82 and the upper surface of the ceiling portion 76. The bolt 60 is fixed to the gate-shaped portion 62 by tightening the nut 82 downward in the state where the bolt is disposed.

  That is, the vibration isolating rubber 90 as an elastic body is provided between the connection member 54 and the support member 26 (the vibration isolation rubber 90 is provided in the vibration transmission path from the connection member 54 to the support member 26). Thus, the support member 26 inserted into the passage 66 is fixed to the connection member 54 by a bolt 60 provided on the connection member 54. Further, in a state where the support member 26 is fixed to the connecting member 54, the beam member 16 and the support member 26 are arranged substantially orthogonally in plan view. The nut 82 is screwed into an end portion of the bolt 60 and is provided with a double nut by a nut 92 provided on the upper surface of the nut 82 to prevent loosening.

  As shown in FIG. 3, the leg portions 62A and 62B of the portal portion 62 located on the left and right of the lower end portion of the support member 26 are provided with columnar rubber portions 94 protruding inward from the inner surfaces of the leg portions 62A and 62B. When the support member 26 swings in a pendulum shape with the vicinity of the through hole 78 formed in the ceiling portion 76 as the center of rotation, the lower end portion of the support member 26 becomes the rubber portion 94. The impact can be absorbed and the excessive shaking of the support member 26 can be reduced.

  The first claw pieces 98A and 98B are bent at both ends of the flange portions 64A and 64B with respect to the direction in which the support member 26 is inserted into the passage 66 so as to bend downward from both ends and embrace the side portions of the beam member 16. Is provided. In addition, the second claw piece 100 is provided at both ends of the receiving portion 56 with respect to the direction in which the support member 26 is inserted into the passage 66 so as to bend upward from both ends and embrace the side portion of the beam member 16. ing.

  As shown in FIG. 7 which is a cross-sectional view of FIG. 6 and a BB arrow view of FIG. 6, an upper hanging hardware 30 is provided on the upper end portion of the hanging member 32 made of a steel rod. A hardware 30 is connected and fixed to the support member 26. The upper hanger 30 is a box-shaped member made of a short steel square pipe having a rectangular structural cross section, and a support member 26 is inserted into the upper portion of the hollow portion 102. Further, the bolt 112 is passed through the through holes 108 and 110 formed in the opposite side wall portions 104 and 106 of the upper hanging hardware 30, and the nut 114 screwed into the end of the bolt 112 is tightened to tighten the upper hanging hardware 30. The side wall portions 104 and 106 are pressed against the side surface of the support member 26, thereby fixing the upper hanging hardware 30 to the support member 26. Further, the side wall portion 106 of the upper hanging hardware 30 is screw-fixed to the side surface of the support member 26 by screws 116. As a result, the upper hanger 30 is prevented from shifting in the material axis direction of the support member 26 with respect to the support member 26. Further, since the support member 26 is inserted into the hollow portion 102 formed by the closed annular member, it is possible to prevent the upper hanging hardware 30 from being detached from the support member 26 and falling.

  As shown in FIG. 10 which is a side view of FIG. 8, a side view of FIG. 9, and a CC arrow view of FIG. 9, a lower hanging hardware 34 is provided at the lower part of the suspension member 32, and the ceiling The board 36 is connected to a field receiving member 38 made of C-shaped steel as a receiving member to which the board 36 is attached. The ceiling board 36 is configured by laminating a plurality of fiber-mixed gypsum plates that are weight finishing materials (in FIG. 8, an example is illustrated in which the ceiling board 36 is configured by stacking five fiber-mixed gypsum plates. )

  The lower hanger 34 is made of a steel plate formed in a gate shape. The legs 118A and 118B of the lower hanger 34 are provided with rib members 120A and 120B for increasing the bending strength of the legs 118A and 118B. ing.

  Further, the through holes 122A, 122B formed in the legs 118A, 118B and the edge receiving member 38 are arranged so as to be sandwiched between the left and right, and the through holes formed in the rotary connecting plates 126A, 126B integrated by the screws 124. Bolts 130 are passed through holes 128A and 128B, and nuts 132 screwed into the ends of bolts 130 are tightened. As a result, the legs 118A and 118B are pressed against the field edge receiving member 38 via the rotation connecting plates 126A and 126B, and thereby the lower hanging hardware 34 is fixed to the field edge receiving material 38.

  Further, by fixing the leg portion 118B to the web 134 of the field receiving member 38 via the rotation connecting plate 126B with the screw 124, the lower hanging hardware 34 is attached to the field receiving member 38. Prevents shifting in the direction of the material axis.

  As shown in FIG. 8, the ceiling board 36 is fixed to a field edge 136 with screws or the like, and a field edge receiving member 38 is fixed to the field edge 136. As shown in FIG. 5, a plurality of the field edges 136 are arranged in the X direction so as to be substantially parallel to the joints 138 of the ceiling boards 36 arranged adjacent to each other. A plurality of field edge receiving members 38 are arranged in the Y direction so as to be substantially orthogonal to the field edge 136 in a plan view.

  The ceiling base reinforcing structure 140 includes reinforcing pipes 142A and 142B made of steel round pipes, a connecting pipe 144 made of steel round pipes, a reinforcing plate 146 made of steel plates, and pipe braces 148A to D made of steel round pipes. Yes.

  The reinforcing pipes 142A and 142B are arranged along the joint 138 of the adjacent ceiling boards 36 so as to be adjacent to each other in plan view through the joint 138 and straddle the plurality of field receiving members 38. That is, the pair of reinforcing pipes 142A and 142B are adjacent to each other in plan view via the bent portion 150 (corner portion formed by the adjacent ceiling board 36) of the ceiling bent surface 40 formed by the adjacent ceiling board 36. Are arranged. Thereby, reinforcement pipe 142A, 142B is arrange | positioned so that it may orthogonally cross with the some field edge receiving material 38 by planar view.

  As shown in FIG. 8, the reinforcing pipes 142 </ b> A and 142 </ b> B are connected to the plurality of field receiving members 38 by the joint hardware 152 to connect the plurality of field receiving members 38. The coupling hardware 152 has a holding member 154 including a pair of holding bodies that are pivotally supported at one end, and is fixed to the field edge receiving member 38 by bolts. The metal fitting 152 holds the reinforcing pipes 142A and 142B so as to surround and sandwich the reinforcing pipes 142A and 142B by the pair of holding bodies. Then, by tightening the pair of holding bodies, the pair of holding bodies are pressed and fixed to the reinforcing pipes 142A and 142B.

  As shown in FIGS. 5 and 8, the connecting pipe 144 is connected to the pair of reinforcing pipes 142 </ b> A and 142 </ b> B by the universal coupling hardware 156, and connects the pair of reinforcing pipes 142 </ b> A and 142 </ b> B. Thus, the ladder structure 158 is configured by the connecting pipe 144 and the reinforcing pipes 142A and 142B. The universal coupling hardware 156 includes a pair of holding members 154, and is orthogonal to the material axis of the steel round pipe fixed to one holding member 154 in a state where the steel round pipes are fixed to the pair of holding members 154, respectively. A pair of holding members 154 are connected so that the steel round pipe fixed to the other holding member 154 can rotate with respect to the rotation shaft.

  As shown in FIGS. 1, 5, and 8, the pipe braces 148 </ b> A to 148 </ b> D connect the connecting pipe 144 and the lower ends of the pipe braces 148 </ b> A to D with a universal joint 156, and By connecting the upper end of D with the second connecting mechanism 160, the reinforcing pipes 142A, 142B and the support member 26 are connected.

  As shown in the perspective view of FIG. 11, the pipe brace 148A and the pipe brace 148B are arranged in the X direction in plan view, and are symmetrical with respect to the vertical axis, between the pipe brace 148A and the pipe brace 148B. Are arranged obliquely so that the distance becomes shorter as it goes downward. The pipe brace 148C and the pipe brace 148D are arranged in the Y direction in a plan view and are symmetrical with respect to the vertical axis so that the distance between the pipe brace 148C and the pipe brace 148D becomes shorter as it goes downward. It is arranged at an angle. Further, the pair of pipe braces 148A and 148B and the pair of pipe braces 148C and 148D are disposed so as to be substantially orthogonal in a plan view.

  As shown in the perspective view of FIG. 12, the second connecting mechanism 160 includes a support beam 166 made of L-shaped steel that is bridged between the support members 26 and is detachably fixed to the support member 26 by bolts and nuts. Arm plates 168A and 168B projecting substantially horizontally from the support beam 166, and connecting pipes 170 made of steel round pipes supported at both ends by the arm plates 168A and 168B and disposed substantially horizontally are provided. Then, the pipe braces 148A to 148D and the connecting pipe 170 are connected to a free position in the material axis direction of the connecting pipe 170 by a universal coupling metal 156, and the support member 26 and the upper ends of the pipe braces 148A to 148D are connected. ing. FIG. 12 shows an example in which the support member 26 and the upper end portion of the pipe brace 148A are connected.

  As shown in FIGS. 5 and 8, the reinforcing plate 146 is a steel member formed in a mountain shape along the ceiling bending surface 40, and both end portions are connected to the end portion 162 of the adjacent field edge receiving member 38. By joining with screws 164, ends of adjacent ceiling boards 36 are connected to each other.

  Next, the operation and effect of the ceiling structure of this embodiment will be described.

  In the ceiling structure 10 according to the present embodiment, as shown in FIGS. 1 and 8, pipe braces 148 </ b> A to 148 </ b> A to connect the reinforcing pipes 142 </ b> A and 142 </ b> B and the support member 26 with respect to shaking caused by the suspended ceiling board 36. It can be suppressed by D. In particular, it is possible to suppress the complex shaking at the time of an earthquake that occurs on the ceiling board 36 that is suspended while being inclined by the pipe braces 148A to 148D that connect the reinforcing pipes 142A and 142B and the support member 26. Further, even when the ceiling board 36 is suspended and arranged so as to form a complicated bent ceiling surface 40, the pipe braces 148A to 148D can be easily installed.

  Further, in the reinforcing structure 140, as shown in FIG. 5, a plurality of edge receiving members 38 are connected and integrated by reinforcing pipes 142A and 142B, and the bent portion of the bent ceiling surface 40 formed by the adjacent ceiling board 36 is provided. The reinforcing pipe 142A and the reinforcing pipe 142B that are adjacent to each other in plan view through 150 are connected by the connecting pipe 144, and the reinforcing pipes 142A and 142B and the connecting pipe 144 constitute the ladder structure 158 to improve the rigidity of the ceiling itself. Thus, the strength of the ceiling bent portion (the vicinity of the bent portion 150) where the force acts during an earthquake can be increased, and a plurality of ceiling boards 36 are integrated to form one integrated ceiling bent surface 40 having a ridgeline. It can form and can suppress the shaking which arises in each ceiling board 36. FIG.

  Further, as shown in FIG. 8, the connecting portion (the joint 138) where the ends of the adjacent ceiling boards 36 are connected can be reinforced by the reinforcing plate 146.

  Further, as shown in FIG. 3, the flange members 64 </ b> A and 64 </ b> B and the receiving plate 56 are pressed and fixed to the beam member 16, so that the connecting member 54 can be placed at a free position of the beam member 16 with respect to the beam length direction of the beam member 16. Can be fixed. That is, since the support member 26 can be connected to a free position of the beam member 16 with respect to the beam length direction of the beam member 16, the suspension member 32 fixed to the support member 26 can be installed at various plane positions. it can.

  In addition, since the support member 26 is disposed above the beam member 16, even when the bolt 60 that fixes the support member 26 to the connecting member 54 is broken or the bolt 60 is unfixed, Since the support member 26 is placed on the beam member 16, the support member 26 does not fall from the beam member 16.

  Further, as shown in FIG. 3, the support member 26 is inserted into a passage 66 formed between the beam member 16 and the portal portion 62 of the connecting member 54 fixed to the beam member 16. Since it is supported by the beam member 16, it is possible to prevent the support member 26 from falling off the beam member 16 when the beam member 16 is shaken due to an earthquake or the like. That is, it is possible to prevent the suspension member 32 and the ceiling board 36 suspended from the support member 26 from falling.

  Further, as shown in FIG. 4, by constituting the beam member 16 with two structural members 42 and 44, it is possible to ensure a higher bending strength than that of one structural member.

  Further, as shown in FIG. 4, the first claw pieces 98 </ b> A and 98 </ b> B and the second claw pieces 100 can prevent the first coupling mechanism 28 (the coupling member 54) from dropping from the beam member 16.

  Further, as shown in FIG. 4, vibration transmitted from the beam member 16 to the support member 26 when the beam member 16 vibrates due to an earthquake or the like can be reduced by the anti-vibration rubber 90. That is, it is possible to reduce the shaking generated in the hanging member 32 and the ceiling board 36 and to prevent the hanging member 32 and the ceiling board 36 from falling.

  As described above, the ceiling structure 10 of the present embodiment can prevent the ceiling board 36 from falling during an earthquake, but it can be used as a ceiling board that forms a complicated ceiling bending surface or a large space. Is particularly effective because complex vibrations occur during earthquakes. In addition, the ceiling board can be reliably prevented from falling even when the ceiling board is heavy or during a large earthquake.

  The present embodiment has been described above.

  In the present embodiment, the example in which the adjacent ceiling boards 36 are inclined and arranged together so as to form a downwardly convex ceiling bent surface 40 is shown. However, at least one of the adjacent ceiling boards 36 is inclined. It only has to be. Further, for example, as shown in the side view of FIG. 13, adjacent ceiling boards 36 may be arranged so as to form an upwardly convex ceiling bending surface 40, or a ceiling plane that is not bent, or is not bent. You may make it arrange | position the adjacent ceiling board 36 so that a ceiling slope may be formed. Moreover, the ceiling board 36 may have any planar shape, and may form any ceiling bent surface 40.

  In the present embodiment, the ceiling board 36 is shown as an example in which a plurality of fiber-mixed gypsum plates are stacked. However, the ceiling board of the present invention means a plate-like member that can form a ceiling surface. To do. That is, the ceiling board may be a plate-like member that can form a ceiling surface, and may be, for example, a decorative panel or a metal panel.

  In the present embodiment, an example in which the pair of flange portions 64A and 64B is installed on the upper surface of the beam member 16 and the receiving plate 56 is installed on the lower surface of the beam member 16 is shown. The flange portions 64 </ b> A and 64 </ b> B may be installed, and the receiving plate 56 may be installed on the upper surface of the beam member 16. Moreover, you may make it fix the connection member 54 to the beam member 16 so that attachment or detachment is possible using another mechanism.

  In the present embodiment, the reinforcing pipe 142A and the reinforcing pipe 142B that are adjacent to each other in plan view are connected via the bent portion 150 of the bent ceiling surface 40 formed by the adjacent ceiling board 36, and the bent pipe 144 is connected. Although the example in which the portion 150 is the seam 138 is shown, the bent portion 150 may be a point. For example, when a downwardly convex pyramid-shaped ceiling surface is formed by a ceiling board, the apex of the pyramid is a bent part, and the reinforcing pipes adjacent in plan view are connected via the apex. Also good.

  Moreover, the universal coupling metal 156 shown in the present embodiment has a pair of holding members that hold and fix the pipe member, and the pair of holding members hold and fix the pipe member, What is necessary is just to be connected so that the other tube member can rotate with respect to a rotation axis orthogonal to the material axis of the tube member. Moreover, considering the force acting on the pipe member in the event of an earthquake, the universally coupled hardware 156 is used having a required joint strength and structural strength. In addition, it is preferable to take measures to prevent the pipe member from shifting in the material axis direction from the holding member in a state where the pipe member is fixed to the holding member. For example, in a state where the tube member is fixed to the holding member, the tube member is further fixed to the holding member with screws.

  In the present embodiment, the reinforcing pipes 142A and 142B, the connecting pipe 144, and the pipe braces 148A to 148D are steel round pipes, but these may be rod-shaped members. For example, it is good also as a rod-shaped member which has other structural cross-sectional shapes, such as a steel square pipe and a steel round bar. In this case, a metal fitting corresponding to the shape of these members is used. If the reinforcing pipes 142A and 142B, the connecting pipe 144, and the pipe braces 148A to 148D are round pipes or round bars, the degree of freedom of the mounting angle of the round pipe or round bar with respect to the connected member can be increased. The ease of assembly of the structure 10 can be improved.

  Further, the pipe braces 148A to 148D may be disposed at any position above the ceiling board 36, and may be coupled to any position of any connecting pipe 144. The pipe braces 148A to 148D may not necessarily be disposed in pairs, and the pair of pipe braces 148A to 148D may not be orthogonal to each other in plan view. The pipe braces are preferably arranged in a well-balanced manner.

  Further, in the present embodiment, the example in which the ceiling board 36 is suspended by the suspension member 32 by connecting the lower hanging hardware 34 to the field receiving member 38 has been shown. However, for example, the lower suspension as shown in FIG. Even when the field edge receiving member 38 is inclined with respect to the material axis of the field edge receiving material 38 using the metal object 172, the lower end portion of the suspension member 32 is suspended in a substantially vertical state. May be coupled to the lower hanging hardware 172. In the lower suspension hardware 172, the lower end portion of the suspension member 32 is allowed to pass through a long hole (not shown) formed in the arc portion 174 along the arc portion 174 of the lower suspension hardware 172, and freely along the arc portion 174. Move to. Then, at the position of the arc portion 174 where the lower end portion of the suspension member 32 is connected, the arc portion 174 is sandwiched from above and below by the sandwiching members 176, 178, and the clamping member is tightened by the nut 180 screwed into the lower end portion of the suspension member 32 176 and 178 are pressed against the arc portion 174 and fixed.

  Moreover, it is preferable that the design seismic intensity of the member which comprises the ceiling structure 10 shown by this embodiment is set to the horizontal seismic intensity 2.0G and the vertical seismic intensity 1.0G. The conventional design seismic intensity is often set to a horizontal seismic intensity of 1.0 G and a vertical seismic intensity of about 0.5 G.

  Moreover, the ceiling structure 10 shown in this embodiment may be applied to new construction work or may be applied to repair work.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to such embodiment at all, Of course, in the range which does not deviate from the summary of this invention, it can implement in a various aspect.

DESCRIPTION OF SYMBOLS 10 Ceiling structure 16 Beam member 26 Support member 32 Suspension member 36 Ceiling board 38 Field edge receiving material (receiving member)
40 Ceiling bent surface 142A, 142B Reinforcement pipe 144 Connecting pipe 146 Reinforcement plate 148A-D Pipe brace 150 Bending part 158 Ladder structure

Claims (3)

A support member spanned over the beam member and connected to the beam member;
A suspension member that is suspended from the support member and is connected to a receiving member to which a ceiling board is attached, and suspends the ceiling board;
A reinforcing pipe connecting the plurality of receiving members;
A pipe brace connecting the reinforcing pipe and the support member;
With ceiling structure.   A connecting pipe that forms a ladder structure with the reinforcing pipe by connecting the adjacent reinforcing pipes in a plan view via a bent portion of a bent ceiling surface formed by the adjacent ceiling board that is suspended with at least one inclined. The ceiling structure according to claim 1. The ceiling structure according to claim 2, further comprising a reinforcing plate that connects ends of the adjacent ceiling boards.

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