Stabilization structure for suspended object

Abstract

To provide a stabilization structure for a suspended object which is suspended and supported on a slab with a suspension bolt, the stabilization structure being capable of suppressing sway of the suspended object and preventing the suspended object from falling with a simple configuration.SOLUTION: The invention provides a stabilization structure 1 for a suspended object which suppresses sway of a suspended object 5 suspended and supported on a slab 3 of a building 2 with a suspension bolt 4, the stabilization structure 1 comprising: a wire 10 in which an intermediate portion 13 is wound around the suspended object 5, one end 11 is fixed to the slab 3 on one side in a horizontal direction with respect to a virtual vertical line L passing through the center of gravity of the suspended object 5 when viewed in a longitudinal direction of the suspended object 5, and another end 12 is fixed to the slab 3 on the other side in the horizontal direction with respect to the virtual vertical line L; and a wire fixing portion 20 which prevents relative movement of the other side 13b with respect to the one side 13a at a doubly overlapped portion of the intermediate portion of the wire 10.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a stabilizing structure that stabilizes a suspended object suspended from a building slab using suspension bolts, and more particularly to a stabilizing structure that prevents the suspended object from swaying or falling. [Background technology]

[0002] For example, in a structure for installing long suspended objects such as pipes, ducts, and wiring racks above the ceiling of a building, a structure is often used in which multiple suspension bolts are fixed to the slab along the position where the suspended object will be placed, and the suspended object is suspended and held by holding parts such as bands attached to the lower ends of the suspension bolts (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-192345 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in a structure in which the suspended object is suspended from a slab by a suspension bolt, there was a problem in that in the event of an earthquake, the suspended object would sway significantly horizontally with the suspension bolt as a fulcrum.

[0005] In response to this, it is possible to create a structure that suppresses the swaying of the suspended object by providing a pair of inclined members on both sides of the hanging bolt, each fixed at its upper end to the slab and at its lower end to the hanging bolt or retaining part.

[0006] However, this structure requires the preparation of two inclined members and the work of fixing them to the slab and the hanging bolt or retaining part using fastening members such as bolts and nuts, which creates the problem that the structure and installation work are complicated.

[0007] Furthermore, this structure has the problem that when the suspended object swings horizontally around the suspension bolt support portion as an axis, the suspension bolt or suspension hardware member breaks, making it impossible to maintain the suspended state.

[0008] The present invention has been made in consideration of these problems, and its purpose is to provide a stabilizing structure for a suspended object that is capable of suppressing the swaying of the suspended object suspended from a slab by hanging bolts and preventing the suspended object from falling, with a simple configuration. [Means for solving the problem]

[0009] The stabilization structure for a suspended object of the present invention is a stabilization structure for a suspended object that is suspended and supported on a slab of a building using suspension bolts and suppresses swaying of the suspended object, and is characterized in that it has one end fixed to the slab on one side of an imaginary vertical line that passes through the center of gravity of the suspended object when viewed from the longitudinal direction of the suspended object, and the other end fixed to the slab on the other side of the imaginary vertical line, and has a wire with a middle portion wrapped around the suspended object, and a wire fixing portion that prevents relative movement of one side of the double-overlapped part of the middle portion of the wire with respect to the other side.

[0010] In the stabilization structure for a suspended object of the present invention, in the above configuration, it is preferable that the wire fixing portion is a fixing device that fixes one side and the other side of the double overlapping part in the middle part of the wire to each other.

[0011] In the stabilization structure for a suspended object of the present invention, in the above configuration, it is preferable that the wire fixing portion is an anti-slip sheet wrapped around the suspended object and positioned between the suspended object and the middle part of the wire.

[0012] In the above-described configuration of the suspended object stabilization structure of the present invention, it is preferable that a length adjustment device for adjusting the length of the wire is attached to the wire. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a stabilizing structure for a suspended object that is capable of suppressing the swaying of the suspended object suspended from a slab by hanging bolts and preventing the suspended object from falling, using a simple configuration. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a side view of a structure for hanging a suspended object to which a structure for stabilizing a suspended object according to one embodiment of the present invention is applied. FIG. [Figure 2] FIG. 2 is a cross-sectional view taken along the line AA in FIG. [Figure 3] 3 is an explanatory diagram showing details of the length adjusting device shown in FIG. 2. FIG. [Figure 4] FIG. 3 is a cross-sectional view taken along line BB in FIG. [Figure 5] FIG. 10 is a side view of the main part of a stabilization structure for a suspended object according to a modified example in which an anti-slip sheet is used as the wire fixing portion. [Figure 6] FIG. 6 is a cross-sectional view taken along line CC in FIG. 5. [Figure 7] 10 is a cross-sectional view corresponding to FIG. 2 of a hanging structure for a suspended object to which a stabilizing structure for a suspended object according to another modified example is applied. FIG. [Figure 8] FIG. 10 is a side view of a structure for hanging a suspended object to which a structure for stabilizing a suspended object according to another embodiment of the present invention is applied. DETAILED DESCRIPTION OF THE INVENTION

[0015] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A stabilization structure for a suspended object according to one embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0016] As shown in Figures 1 and 2, a suspended object stabilization structure 1 according to one embodiment of the present invention is used to suppress the swaying of a long suspended object 5 that is suspended and supported on a slab 3 of a building 2 using suspension bolts 4.

[0017] The building 2 may be of various configurations and used for various purposes, such as an office building.

[0018] The slab 3 constitutes the floor and ceiling of the building 2. The slab 3 is, for example, a concrete slab. An insert metal fitting 6 is embedded in the slab 3 above the object 5 to be hung.

[0019] The suspension bolt 4 is a straight rod-shaped bolt, and its upper end is screwed into an insert metal fitting 6, thereby fixing it to the slab 3. The suspension bolt 4 extends straight downward from the slab 3, and a retaining part 7 such as a band is attached to its lower end.

[0020] Hanging object 5 is a long object such as a pipe, duct, or wiring rack. In this embodiment, hanging object 5 is a pipe with a cylindrical outer surface 5a made of synthetic resin or steel pipe. Hanging object 5 is held by holding portion 7, and is suspended and supported from slab 3 by hanging bolts 4.

[0021] 1 and 2 show only one suspension bolt 4 and holding portion 7, the suspended object 5 may be configured to be suspended and supported at multiple locations on the slab 3 by multiple suspension bolts 4 and holding portions 7 provided at predetermined intervals along the longitudinal direction of the suspended object 5. In this case, for example, the sway suppression structure 1 according to this embodiment may be provided at a position corresponding to each suspension bolt 4. The sway suppression structure 1 according to this embodiment may be provided at an appropriate position at a pitch different from that of the suspension bolts 4, rather than at a position corresponding to each suspension bolt 4.

[0022] Below the slab 3, a suspended ceiling 9 is provided, suspended from the slab 3 by other suspension bolts 8. Between the slab 3 and the suspended ceiling 9 is an attic space S, and the suspended object 5 is placed in the attic space S. Note that the suspended ceiling 9 does not necessarily have to be provided.

[0023] The suspended object stabilization structure 1 according to this embodiment includes a wire 10 and a wire fixing portion 20.

[0024] The wire 10 is a bendable linear member such as a metal wire, string, chain, etc. In this embodiment, the wire 10 is a metal wire.

[0025] As shown in Figure 2, wire 10 has one end 11 fixed to slab 3 on one horizontal side (the right side in Figure 2) of imaginary vertical line L, which passes through the center of gravity of suspended object 5 when viewed in the longitudinal direction of suspended object 5 (the direction of the paper in Figure 2) and extends vertically, and the other end 12 fixed to slab 3 on the other horizontal side (the left side in Figure 2) of imaginary vertical line L, and intermediate portion 13 wrapped around suspended object 5. That is, when viewed from the longitudinal direction of the suspended object 5 (the direction of the paper in Figure 2), one end 11 of the wire 10 is fixed to the slab 3 at a position shifted horizontally to one side (the right side in Figure 2) relative to the suspended object 5, and the other end 12 is fixed to the slab 3 at a position shifted horizontally to the other side (the left side in Figure 2) relative to the suspended object 5, and the middle portion 13 is wrapped around the suspended object 5.

[0026] 1 and 2, middle portion 13 of wire 10 is wound once around outer peripheral surface 5a from the underside of suspended object 5 so that wire 10 is pulled out from the underside of suspended object 5 toward one end 11 or the other end 12. As shown in FIG. 1, middle portion 13 of wire 10 wound around suspended object 5 is in a double-overlap state, with one side 13a of middle portion 13 closer to one end 11 and the other side 13b of middle portion 13 closer to the other end 12 below suspended object 5. Furthermore, the portion of wire 10 between one end 11 and middle portion 13, and the portion between the other end 12 and middle portion 13, are each tensioned to generate an appropriate amount of tension.

[0027] Note that wire 10 may be configured such that intermediate portion 13 is wound around suspended object 5 from the underside of suspended object 5 along outer peripheral surface 5a over multiple revolutions.

[0028] The wire 10 is preferably configured to have a length adjustment device 30 attached thereto for adjusting the length of the wire 10. In the case shown in Figures 1 and 2, a length adjustment device 30 is attached to each of one end 11 and the other end 12 of the wire 10.

[0029] The length adjustment device 30 may have a configuration shown in FIG. 3, for example. The length adjustment device 30 shown in FIG. 3 includes a holder 31 and a wedge member 32. The holder 31 is a block-shaped member having a wedge-shaped through hole 31a through which the wire 10 passes. The wire 10 is inserted into the through hole 31a from the wide side toward the narrow side, bent into a loop, then inserted again into the through hole 31a from the narrow side, and drawn out from the wide side. The wedge member 32 is inserted between the insertion side and the drawing side of the wire 10 arranged in the through hole 31a, and is driven into the through hole 31a with a hammer or the like. The wire 10 is fixed to the holder 31 by being pressed against the inner surface of the through hole 31a by the wedge member 32 in the holder 31, thereby defining its length.

[0030] With the length adjustment device 30 having such a configuration, the length of the wire 10 pulled out from the side with the wider opening can be set to any length, and by driving the wedge material 32 into the through hole 31a, the length of the wire 10 from the object to be hung 5 to one end 11 or the other end 12 can be easily adjusted.

[0031] In addition, when a length adjustment device 30 is provided, one end 11 and the other end 12 of the wire 10 are configured into a loop shape by the length adjustment device 30, and the one end 11 and the other end 12 are each connected to a connecting fitting 33 fixed to the slab 3.

[0032] As described above, by configuring the wire 10 to have a length adjustment device 30 attached, it becomes possible to easily fix one end 11 and the other end 12 of the wire 10 to the slab 3 so that the portion between the one end 11 and the middle portion 13 and the portion between the other end 12 and the middle portion 13 generate appropriate tension.

[0033] The length adjustment device 30 is not limited to the above configuration, and any other configuration may be used as long as it is capable of adjusting the length of the wire 10. The length adjustment device 30 may be attached to only one of the one end 11 and the other end 12 of the wire 10. Note that the length adjustment device 30 may not be attached to either the one end 11 or the other end 12 of the wire 10.

[0034] Wire fixing portion 20 is provided at the double overlapping portion of wire 10, i.e., at the portion where one side 13a and the other side 13b of intermediate portion 13 wrapped around suspended object 5 overlap in the longitudinal direction of suspended object 5, and is configured to prevent relative movement of one side 13a of intermediate portion 13 with respect to the other side 13b (one side 13a and the other side 13b of intermediate portion 13 moving in opposite directions in the extension direction of wire 10).

[0035] 1 and 2, the wire fixing part 20 is a fixture that fixes one side 13a and the other side 13b of the double-overlapped portion of the middle part 13 of the wire 10 to each other. More specifically, as shown in Fig. 4, the wire fixing part 20 has a main body 21 formed into a square tube shape using, for example, steel, and a screw member 22 that is screwed to penetrate a side wall of the main body 21. The one side 13a and the other side 13b of the wire 10 are inserted into the main body 21, and by tightening the screw member 22, the one side 13a and the other side 13b of the wire 10 can be pressed against each other and fixed.

[0036] When one side 13a and the other side 13b of middle portion 13 of wire 10 wound around suspended object 5 are fixed to each other by wire fixing part 20, relative movement of one side 13a and the other side 13b of middle portion 13 is prevented. As a result, when suspended object 5 is subjected to horizontal vibration (left and right direction in FIG. 2), wire 10 slips against outer peripheral surface 5a of suspended object 5, preventing middle portion 13 of wire 10 wound around suspended object 5 from shifting from the state shown in FIG. 2 to one end 11 or the other end 12 of wire 10, and suspended object 5 can be held in its initial position by wire 10.

[0037] For example, when the suspended object 5 receives a force directed to the left in Figure 2, the tension between one end 11 and the middle part 13 of the wire 10 can prevent the suspended object 5 from moving to the left in Figure 2, and when the suspended object 5 receives a force directed to the right in Figure 2, the tension between the other end 12 and the middle part 13 of the wire 10 can prevent the suspended object 5 from moving to the right in Figure 2.

[0038] As described above, in this embodiment, stabilization structure 1 for a suspended object is configured so that one end 11 is fixed to slab 3 on one horizontal side of imaginary vertical line L, which passes through the center of gravity of suspended object 5 when viewed from the longitudinal direction of suspended object 5, and the other end 12 is fixed to slab 3 on the other horizontal side of imaginary vertical line L, with intermediate portion 13 of wire 10 wound around suspended object 5, and wire fixing portion 20 that prevents relative movement of one side 13a of wire 10 with the other side 13b of the double-overlapped portion, thereby making it possible to suppress swaying of suspended object 5, which is suspended and supported on slab 3 by hanging bolts 4, with a simple configuration. This makes it possible to reduce the cost of stabilization structure 1 for a suspended object and simplify the construction work for sway-suppressing structure 1. Furthermore, by suppressing the swaying of the suspended object 5, it is possible to prevent the suspension bolt 4 from breaking due to the swaying, and even if the suspension bolt 4 breaks due to the swaying, the suspended object 5 can be suspended and held by the wire 10, thereby preventing the suspended object 5 from falling from the slab 3.

[0039] Furthermore, in this embodiment, a fixture that secures one side 13a and the other side 13b of the double-overlapped portion of middle section 13 of wire 10 to each other is used as wire fixing section 20, so that with a simple configuration, it is possible to prevent relative movement of one side 13a and the other side 13b of the double-overlapped portion of wire 10. This makes it possible to further simplify the configuration of stabilization structure 1 for a hung object, further reduce costs, and further simplify the installation work of stabilization structure 1 for a hung object.

[0040] Furthermore, in this embodiment, the wire 10 is configured to be equipped with a length adjustment device 30 for adjusting the length of the wire 10, and as described above, it becomes possible to easily fix the one end 11 and the other end 12 of the wire 10 to the slab 3 so that an appropriate tension is generated in the portion of the wire 10 between the one end 11 and the middle portion 13 and in the portion of the wire 10 between the other end 12 and the middle portion 13. This further simplifies the construction work of the suspended object stabilization structure 1.

[0041] As shown as a modified example in Figures 5 and 6, instead of the fixture shown in Figure 4, a non-slip sheet wrapped around suspended object 5 and placed between suspended object 5 and middle portion 13 of wire 10 can also be used as wire fixing part 40. The non-slip sheet prevents middle portion 13 of wire 10 from slipping relative to outer peripheral surface 5a of suspended object 5. In this embodiment, a non-slip sheet of a predetermined width is wrapped around the entire circumference of outer peripheral surface 5a of suspended object 5 as wire fixing part 40, and is wrapped around suspended object 5 so that middle portion 13 of wire 10 is pressed against wire fixing part 40 with a predetermined force on the outside of wire fixing part 40. Note that the non-slip sheet used as wire fixing part 40 does not have to be wrapped around the entire circumference of outer peripheral surface 5a of suspended object 5, and may be wrapped around only a portion of outer peripheral surface 5a of suspended object 5.

[0042] The non-slip sheet constituting the wire fixing portion 40 can be made of a material with a higher coefficient of friction than the outer peripheral surface 5a of the suspended object 5, such as a sheet-like cushioning material or a synthetic rubber sheet.

[0043] When wire fixing part 40 is made of an anti-slip sheet, one side 13a and the other side 13b of middle portion 13 wrapped around suspended object 5 are prevented by wire fixing part 40 from slipping in the direction in which wire 10 extends relative to outer circumferential surface 5a of suspended object 5, so that one side 13a and the other side 13b of middle portion 13 are fixed to each other via wire fixing part 40, preventing relative movement of one side 13a and the other side 13b of middle portion 13. As a result, when suspended object 5 is subjected to horizontal vibration (left and right direction in FIG. 6 ), wire 10 slips relative to outer circumferential surface 5a of suspended object 5, preventing middle portion 13 of wire 10 wrapped around suspended object 5 from shifting from the state shown in FIG. 6 toward one end 11 or the other end 12 of wire 10, and suspended object 5 can be held in its initial position by wire 10. Therefore, even when the wire fixing portion 40 is made of an anti-slip sheet, the swaying of the suspended object 5 suspended and supported on the slab 3 by the hanging bolt 4 can be suppressed with a simple configuration, just as when the wire fixing portion 40 is made of a fixing device.

[0044] As shown as another modified example in Figure 7, the stabilization structure 1 for a suspended object can also be configured so that the wire 10 is wound once around the upper side of the suspended object 5 along the outer peripheral surface 5a so that it is pulled out from the upper side of the suspended object 5 toward one end 11 or the other end 12.

[0045] In this case, wire 10 will have a double-overlapped portion above suspended object 5, and wire fixing part 50 is provided to prevent relative movement of one side 13c and the other side 13d of wire 10 at the double-overlapped portion above suspended object 5. That is, wire fixing part 50 is provided at the intersection of one side 13c and the other side 13d of wire 10 above suspended object 5, and fixes one side 13c and the other side 13d of wire 10 at this intersection. In this case, a fixture having a configuration similar to that of wire fixing part 20 shown in FIG. 4 is preferably used as wire fixing part 50.

[0046] Even in the configuration of the modified example shown in Figure 7, when suspended object 5 is subjected to horizontal vibration (left and right direction in Figure 7), wire 10 slips against outer peripheral surface 5a of suspended object 5, preventing intermediate portion 13 of wire 10 wound around suspended object 5 from shifting toward one end 11 or the other end 12 of wire 10 from the state shown in Figure 7, and suspended object 5 can be held in its initial position by wire 10. Thus, even in the configuration of the modified example shown in Figure 7, it is possible to suppress swaying of suspended object 5, which is suspended and supported on slab 3 by hanging bolts 4, with a simple configuration.

[0047] In the configuration of the modified example shown in FIG. 7, the length adjuster 30 of the wire 10 may be attached to only one of the ends 11 and 12 of the wire 10.

[0048] Figure 8 is a side view of a hanging structure for a suspended object to which a stabilizing structure for a suspended object according to another embodiment of the present invention is applied. In Figure 8, members and parts corresponding to those previously described are given the same reference numerals, and repeated explanations will be omitted.

[0049] In another embodiment of stabilization structure 1 for a suspended object shown in Fig. 8, similar to the modified example shown in Fig. 7, wire 10 is wound once around outer peripheral surface 5a from the top of suspended object 5 so that it is pulled out from the top of suspended object 5 toward one end 11 and the other end 12. On the other hand, in another embodiment of stabilization structure 1 for a suspended object shown in Fig. 8, wire 10 is configured such that one end 11 is fixed to slab 3 on one side of imaginary vertical line L in the horizontal direction, with respect to imaginary vertical line L which passes through the center of gravity of suspended object 5 when viewed from the longitudinal direction of suspended object 5 and is offset in the longitudinal direction (axial direction) of suspended object 5 relative to hanging bolt 4, and the other end 12 is fixed to slab 3 on the other side of imaginary vertical line L in the horizontal direction. In other words, one end 11 and the other end 12 of wire 10 are fixed directly above suspended object 5, spaced apart from each other along the axial direction of suspended object 5. At this time, the wire 10 is pulled out from the upper side of the suspended object 5 toward one end 11 or the other end 12, so the wire 10 can be fixed to the slab 3 without interfering with the suspended object 5.

[0050] According to this other embodiment of stabilization structure 1 for a suspended object, stabilization structure 1 for a suspended object is configured so that one end 11 is fixed to slab 3 on one horizontal side of imaginary vertical line L, which passes through the center of gravity of suspended object 5 when viewed from the longitudinal direction of suspended object 5, and the other end 12 is fixed to slab 3 on the other horizontal side of imaginary vertical line L, and intermediate portion 13 of wire 10 is wound around suspended object 5, and wire fixing portion 50 prevents relative movement of one side 13c of wire 10 relative to the other side 13d of the double-overlapped portion, thereby making it possible to suppress swaying in the longitudinal direction of suspended object 5.

[0051] Furthermore, by providing a stabilization structure 1 for a suspended object according to another embodiment shown in Figure 8 in addition to the stabilization structure 1 for a suspended object shown in Figures 2 to 7, it is possible to suppress the swaying of the suspended object 5 in all directions.

[0052] Furthermore, in another embodiment of stabilization structure 1 for a suspended object shown in Figure 8, it is preferable to configure it so that an anti-slip sheet is placed between middle section 13 of wire 10 as wire fixing section 40. This configuration prevents middle section 13 of wire 10 from shifting axially relative to suspended object 5, making it possible to more effectively suppress swaying of suspended object 5 in the direction along the longitudinal direction.

[0053] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention.

[0054] For example, if one end 11 of wire 10 is fixed to slab 3 on one side of an imaginary vertical line L that passes through the center of gravity of suspended object 5 when viewed from the longitudinal direction of suspended object 5, and the other end 12 is fixed to slab 3 on the other side of the imaginary vertical line L in the horizontal direction, then one end 11 and the other end 12 may be fixed to slab 3 along a direction inclined at an angle of 90 degrees or less with respect to the longitudinal direction of suspended object 5.

[0055] Furthermore, if the suspended object 5 is a pipe or duct that requires heat insulation, a heat insulating support material may be attached between the suspended object 5 and the middle part 13 of the wire 10, and the parts of the suspended object 5 other than the part around which the middle part 13 of the wire 10 is wrapped may be covered with heat insulating material. [Explanation of symbols]

[0056] 1. Stabilization structure for suspended objects 2. Building 3. Slab 4 Hanging bolts 5 Hanging objects 5a Outer surface 6 Insert hardware 7 Holding part 8 Hanging bolt 9. Suspended Ceiling 10 wire rod 11 one end 12 other end 13 Middle part 13a One side 13b Other side 13c One side 13d Other side 20 Wire fixing part 21 Main body 22 Screw member 30 Length adjustment device 31 Holder 31a Through hole 32 Wedge material 33 Connecting fittings 40 Wire fixing part 50 Wire fixing part S. Attic space L Virtual vertical line

Claims

1. A stabilization structure for a suspended object suspended and supported on a building slab using suspension bolts, a wire rod having one end fixed to the slab on one side of a virtual vertical line passing through the center of gravity of the suspended object when viewed from the longitudinal direction of the suspended object, and the other end fixed to the slab on the other side of the virtual vertical line, with the middle portion wound around the suspended object; A stabilizing structure for a suspended object, characterized by having a wire fixing portion that prevents relative movement of one side of the double-overlapped portion of the middle part of the wire relative to the other side.

2. 2. The stabilizing structure for a suspended object according to claim 1, wherein the wire fixing portion is a fixture that fixes one side and the other side of the double overlapping portion of the middle portion of the wire to each other.

3. 2. The stabilizing structure for a suspended object according to claim 1, wherein the wire fixing portion is an anti-slip sheet wrapped around the suspended object and positioned between the suspended object and the intermediate portion of the wire.

4. 4. The stabilizing structure for a suspended object according to claim 1, wherein a length adjusting device for adjusting the length of the wire is attached to the wire.

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