JPH10205654A - Suspended supporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold the same strength as that of an A kind earthquake resistant supporting system while being a B kind earthquake resistant supporting system simply by arranging a compressive force resister resisted against compressive force by being brought into contact both ends with upper and lower installing parts of a vertical suspended material when compressive force of an axial direction is applied on the vertical suspended material. SOLUTION: A compressive force resister 17 is arranged, which is formed in such a constitution that both ends are brought into contact with vertical installing parts of a vertical suspended material 12 when compressive force of an axial direction is applied on the vertical suspended material 12 by earthquake force, and an upper end and a lower end are brought into contact with ceiling 11 and a horizontal plate of a horizontally mounted material 13 respectively when compressive force of the axial direction is applied thereon. The compressive pressure resister 17 is formed of a material for sufficiently resisting the compressive force of the axial direction. The vertical suspended material 12 is good in the case of a simple structure which is weak in compressive force of the axial direction such as a narrow suspended bolt on the basis of a B kind earthquake resistant support without a large structure such as a L-shaped steel on the basis of a A kind earthquake resistant support, and thereby, it is possible to prevent deformation of an axial rectangular direction such as the vertical suspended material 12 in the same way as the A kind earthquake resistant support.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension type supporting device having a simple structure and capable of sufficiently withstanding shaking such as an earthquake.

[0002]

2. Description of the Related Art Seismic measures must be taken for building equipment in order to avoid significant damage during an earthquake. Generally, seismic measures based on the "Building Equipment Seismic Design and Construction Guidelines" issued by the Japan Building Center. Is being done.

[0003] Cables for electrical equipment, air conditioning and sanitary equipment, etc.
In a so-called horizontal drawing pipe or the like in which a pipe or the like is suspended in a lateral direction along a ceiling, it is necessary to take seismic measures in order to suppress deformation of the vertically suspended member due to seismic force.

That is, in a horizontal drawing pipe or the like, as shown in FIGS. 4 and 5, a horizontal member 3 is suspended and supported from a ceiling 1 by two left and right vertical suspension members 2 and 2. A rack (or a duct) 4 is fixed on the plurality of hanging members 3, 3,...
A cable or a pipe (hereinafter, referred to as a long object) 5 is wired and piped on a child girder 4b horizontally mounted between both side plates 4a, 4a. As shown in FIG. 4, the ceiling 1 and the horizontal member 3 are connected diagonally by diagonal suspension members 6 and 6 outside the left and right vertical suspension members 2 and 2 in order to prevent the vertical direction swing.

As shown in FIG. 6, a tensile force P acts on the vertical suspension members 2 downward in the axial direction due to the total weight W of the horizontal members 3, the racks 4, the long objects 5, and the like.

However, in such a suspended support structure, when the seismic force F acts in a horizontal direction, for example, from the left side as shown in FIG. ) Acts, but a compressive force acts in the axial direction (vertically upward) on the left vertical suspension member 2.

[0007] The axial tensile force acting on the slant suspension 6 is represented by T
T = F × (H ₂ / L) When the axial compressive force acting on the vertical hanging member 2 is C, C = F × (H ₁ / L). (However, the length of the vertical hanging member 2 is H ₁ , the length of the oblique hanging member 6 is H ₂ , and the distance between the upper end fixing point of the vertical hanging member 2 and the upper end fixing point of the oblique hanging member 6 is L.)

Therefore, the upward compressive force C applied to the vertical hanging member 2 exceeds the tensile force P exerted by the total weight W of the rack 4 and the long object 5 on the vertical hanging member 2. Then, the vertical suspension member 2 is compressed and deformed in the direction perpendicular to the axis as shown in FIG.

In order to prevent such deformation, the "Guidelines for Seismic Design and Construction of Building Equipment" stipulates two types of types A and B as types of seismic support such as horizontal piping. The class A seismic support system uses a strong material to sufficiently withstand the force. As shown in FIG.
For example, a strong material that can sufficiently withstand the axial compression force, such as an L-section steel, is used.

On the other hand, in the class B seismic support system, the axial compressive force C acting on the vertical hanging member 2 by the seismic force is converted into the tensile force P by the total weight of the rack and the long object.
The vertical suspension member 2 has a simple structure in which the vertical suspension member 2 is not deformed in the direction perpendicular to the axis even when the axial compression force acts. As shown in FIGS.
Is a simple structure using a normal suspension bolt having a diameter similar to that of the slant suspension member 6 and not so large.

[0011]

As described above, the class-A seismic support uses a vertical suspension member 2 such as an L-shaped steel which can sufficiently withstand the axial compressive force, and is therefore compared with the class-B seismic support. Although the strength (suppression force against deformation) is large, the class A seismic support uses L-shaped steel as the vertical suspension member 2 to fix the upper and lower ends, so the fixed mounting work of the upper and lower ends is difficult, and it takes a lot of work It takes time and costs are high.

On the other hand, the class B seismic support is a simple method in which the axial compressive force acting on the vertical hanging member 2 is offset by the tensile force acting on the vertical hanging member 2, so that the construction is also difficult. If the compression force in the axial direction exceeds the tensile force due to gravity due to stronger seismic force, the vertical suspension 2 cannot withstand this compression and deforms in the direction perpendicular to the axis as shown in FIG. There is a problem of doing it.

However, although the class B seismic support is weak in strength and easily deformed as described above, the construction is easy, the time is short, and the cost is low. There are very many construction requests. The present invention is a simple class B seismic
It is an object of the present invention to provide a suspension type support device that maintains the same strength as that of the type of seismic support system.

[0014]

In order to achieve the above object, in a suspension type supporting device according to the present invention, when the vertical suspension member receives a compressive force in the axial direction, the vertical suspension member is connected between upper and lower mounting portions of the vertical suspension member. Are provided with a compressive force resistor which is in contact with both ends to resist the compressive force.

With this configuration, when an axial compressive force exceeding the tensile force acts on the vertical suspension member due to the seismic force, the upper and lower ends of the compression force resistor contact between the upper and lower mounting portions of the vertical suspension member. The vertical suspension is B
Even the ones for seismic support are not deformed by seismic force.

In addition, if the compressive force resistor is formed of a tubular body, it is only necessary to pass the vertical suspension member through the tubular body in the case of class B seismic support, so that the construction is simple and the cost is low. Will be maintained.

Further, the compression force resistor is made of a channel steel material, and lids are attached to a plurality of openings on the side surface thereof.
Since it is only necessary to make it not fall off from the vertical hanging material, construction is easy and cost reduction is maintained. Moreover, if a channel steel material having an open side surface is used, the channel steel material is inserted into the existing vertical suspension material of class B seismic support so that the vertical suspension material is inserted into the channel steel material later. be able to.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the suspension type support device of the present invention. The suspension type support device of the present invention is based on the class B seismic support system described above, and includes two left and right vertical suspension members
2, the horizontal suspension member 13 is suspended and supported, and further, outside the left and right vertical suspension members 12, 12 in order to prevent rolling, the diagonal suspension member 1 in an oblique direction from the ceiling 11.
The horizontal members 13 are connected by 4 and 14.

That is, the suspension type supporting device of the present invention is applied to the vertical suspension members 12, 12 by the weight of the horizontal member 13, the rack 24 mounted on the horizontal member 13, the long object 28 mounted on the rack 24, and the like. According to the class B seismic support for preventing the deformation in the direction perpendicular to the axis at the time of the earthquake by canceling out the axial compressive force acting by the seismic force F in the rolling direction by the acting tensile force, the vertical suspension 12 For example, a normal suspension bolt having a small diameter is used.

The vertical suspension member 12 is formed, for example, in the hole 1 of the support insert 15 embedded in the concrete of the ceiling 11.
The upper end of the vertical suspension member 12 is screwed into and supported by 5a. The horizontal member 13 is made of, for example, an L-shaped steel material, and the lower end of the vertical suspension member 12 is inserted into a hole 13b provided in the horizontal plate 13a of the horizontal member 13 so that the horizontal member 13 extends from above and below the horizontal plate 13a.
The lower end of the vertical suspension member 12 is fixed to the horizontal plate 13a of the horizontal member 13 by tightening the two nuts 16a and 16b.

When the vertical hanging member 12 receives the above-mentioned axial compressive force due to the seismic force F, both ends contact between the upper and lower mounting portions of the vertical hanging member 12 so as to resist the axial compressive force. That is, the compressive force resistor 17 is provided so that the upper end contacts the ceiling 11 and the lower end contacts the horizontal plate 13b of the horizontal member 13 when the vertical hanging member 12 receives the compressive force in the axial direction.

As shown in FIG. 2, the compression force resistor 17 is formed of a tubular body having a circular, elliptical, or polygonal cross section, for example.
The lower end of the vertical suspension member 12 is fixed to the horizontal member 13 so that the compression force resistor 17 has
1 or with a slight gap, and is mounted so that it cannot fall off with its lower end in contact with the horizontal plate 13a. The upper end of the oblique hanging member 14 is fixed to, for example, an L-shaped support bracket 18 attached to the ceiling 11.

That is, the horizontal mounting portion 18a of the support fitting 18
The L-shaped plate 18 is fixed to the ceiling 11 by, for example, screwing a bolt 19 inserted into the hole of the ceiling insert 11 into a hole 15 a of the support insert 15 embedded in the concrete of the ceiling 11.

The oblique hanging member 14 is, for example, a flat mounting plate 14a fixed to the upper end of a normal hanging bolt. The bolt 20 is connected to the hole of the mounting plate 14a and the vertical portion 18b of the L-shaped plate 18.
By tightening the nut 21 through the hole, the upper end of the oblique hanging member 14 is fixed.

The lower end of the oblique hanging member 14 is inserted through a hole of a tapered pedestal 22 projecting from the lower surface of the horizontal plate 13 a of the horizontal member 13, and is fixed by a nut 23. The rack 24 is provided on the upper surface of the horizontal plate 13a of the horizontal member 13 along the horizontal member 13 suspended and supported by the two vertical suspension members 12, 12 and the two oblique suspension members 14, 14, as described above. And is fixed by pressing the side plate 24a of the rack 24 with the presser 27 fixed to the horizontal plate 13a. Along this rack 24, the rack 24
Cables, pipes, refrigerant pipes, and other long objects 28 are wired and piped (in a direction perpendicular to the paper surface) on the girder 24b.

With such a structure, even if an axial compressive force acts on the vertical suspension member 12 due to the seismic force F as described in FIG. 6, the upper end of the compressive force resistor 17 contacts the ceiling 11. Since the lower end contacts the horizontal plate 13a of the horizontal member 13 and resists this axial compressive force, it is prevented from being deformed as shown in FIG.

Therefore, if the compressive force resistor 17 is constructed to sufficiently withstand the axial compressive force, the vertical suspension member 12 is not so large as the L-shaped steel based on class A seismic support. , Even with a simple structure that is vulnerable to axial compression force, such as a thin suspension bolt based on class B seismic support,
Like the type of seismic support, deformation of the vertical suspension member 12 in the direction perpendicular to the axis as shown in FIG. 7 can be prevented.

Moreover, if the compressive force resistor 17 is formed of a tubular body, the vertical suspension 1
2 only needs to be passed through this tubular body, so that the construction is simple and the cost is kept low.

As the compressive force resistor 17, a lip channel steel as shown in FIG. 3 can be used. When this lip channel steel is used, the compression force resistor 17 is
In order to prevent the plate nut 33 from dropping off, the cover 30 is placed over the side opening 29 at a plurality of locations from the outside, and bolts 32 are inserted through holes 31 of the cover 30 so that Screw it into the screw hole 33a,
In 3, the lid 30 is fixed by tightening the lip edge portion 17 a of the compressive force resistor 17 between the lid 30 and the lid 30.

If a channel steel member having an open side is used, the channel steel member is inserted into the existing vertical suspension member 12 of class B seismic support so that the vertical suspension member 12 is inserted into the channel steel member later. Can be mounted in an insertable manner.

In the above-described embodiment, the present invention has been described by way of an example in which the present invention is suspended and supported on the ceiling 11; Attach the compression force resistor 17 so that the upper end of the compression force resistor 17 contacts this horizontal steel material.

Further, in the above-described embodiment, the L-shaped steel is exemplified as the horizontal member 13, but it is a matter of course that the horizontal member 13 can be any material such as a lip channel steel.
Further, it is needless to say that a diagonal suspension member 14 can be used which is connected with a turnbuckle and tensioned by using two suspension bolts.

[0033]

Since the present invention is constructed as described above, the upper and lower ends of the compressive force resistor are placed above and below the vertical suspension member when the vertical suspension is axially compressed by seismic force. Since it comes into contact between the mounting portions and resists the compressive force, even if the vertical suspension member is used for class B seismic support, it is not deformed by the seismic force.

Moreover, if the compressive force resistor is formed of a tubular body, it is only necessary to pass the vertical suspension member through the tubular body in the case of class B seismic support, so that the construction is simple and the cost is low. Will be maintained.

Further, the compression force resistor is made of a channel steel material, and lids are attached to a plurality of openings on the side surface thereof.
Since it is only necessary to make it not fall off from the vertical hanging material, construction is easy and cost reduction is maintained. Moreover, if a channel steel material having an open side surface is used, the channel steel material is inserted into the existing vertical suspension material of class B seismic support so that the vertical suspension material is inserted into the channel steel material later. be able to.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of the present invention, with a part broken away.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view of another embodiment of the present invention.

FIG. 4 is a schematic side view showing the structure of a conventional suspension type support device using class B seismic support.

FIG. 5 is a front view of FIG. 4;

FIG. 6 is an explanatory view of the action of force due to seismic force.

FIG. 7 is an explanatory diagram of deformation due to seismic force.

FIG. 8 is a schematic side view showing the structure of a hanging type support device using class B seismic support.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Ceiling 12 Vertical suspension material 13 Horizontal suspension material 14 Diagonal suspension material 17 Compressive force resistive body 24 Rack 28 Long object 29 Side opening 30 Cover

Claims (3)

[Claims] An object to be supported in a horizontal direction is suspended and supported by a plurality of vertical suspension members and a plurality of skewing members, and a compressive force acting on the vertical suspension member by seismic force is obtained by a tensile force by gravity. In the hanging type support device for offsetting, when the vertical hanging member receives the compressive force in the axial direction, a compressive force resistor that is in contact at both ends between upper and lower mounting portions of the vertical hanging member and resists the compressive force. A hanging-type support device, characterized in that it is provided. 2. The suspension type supporting device according to claim 1, wherein said compression force resistor is a tubular body provided on said vertical suspension member so as not to fall off so as to surround said vertical suspension member. 3. The groove-shaped steel member provided so that the compression force resistor surrounds the vertical suspension member, and a lid body for closing the opening is attached to a plurality of openings of the grooved steel member. 2. The hanging type supporting device according to claim 1, wherein the hanging type supporting device cannot fall off from the vertical hanging member.