JP2006214128A - Stairs - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide stairs constituted by fixing a step member per step on an inclined beam and capable of increasing rigidity of the step member, reducing deflection, improving construction easiness, and adjusting height easily. <P>SOLUTION: The step member 2 is constituted by arranging tubular members 21, 22 made of steel having box-shaped cross section in parallel and connecting them integrally by a connection member 23 for fixation and a connection member 24 in an intermediate part. A bolt 12 is erected on the beam 1 over which the step member is stretched through a supporting pedestal 11, and the connection member for fixation is supported by a nut 15 screw-fitted into the bolt. A steel plate member is stretched over between two tubular members, and a steel plate member 26 covering a joint part of the connection member 23 for fixation and the bolt 12 is pulled upward to enable mounting and dismounting. A display device in which an LED elements are arranged is arranged on an inner side of the tubular member to display by flickering of the LED element on a riser face. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a staircase provided in a public passage such as a station or in a building, and more particularly to a staircase fixed so as to bridge an independent step member for each step on the upper surface of a girder provided with an inclination. Is.

  In general, a staircase with a stone material affixed to the surface is provided with a reinforced concrete frame tilted, and a plurality of horizontal treads are formed on the upper surface of the frame with a predetermined height difference. It is formed by pasting.

  Further, in Patent Document 1, in order to rationalize the construction, a step member filled with lightweight concrete is formed on the back surface of the tread plate and the kick plate, and is supported by being inclined at the site where these are installed. Further, a technique for fixing on a frame or a girder (sagara girder) is disclosed.

  On the other hand, in order to reduce the weight of the step member and simplify the installation at the site, a technique has been proposed in which the step member is a steel plate with a stone or the like attached thereto, and this is attached to the steel beam with welding or bolts and nuts. (Patent Document 1).

  In the staircase using the step member in which stone or the like is bonded to such a steel plate, the construction is simplified as described above, and even if a load is applied immediately after the step member is attached, no displacement such as settlement occurs. In addition, it has advantages such as stable quality of stepped parts, easy repair and refurbishment, and reduction of waste materials.

Patent Document 2 discloses a technique for attaching a stair plate (step member) in which a stone is attached to a steel plate while adjusting the height.
Microfilm of actual application No. 2-81106 (No. 4-39228) JP-A-4-166548

  As described above, the staircase using the step member in which the stone material is attached to the steel plate has many advantages in terms of weight reduction, ease of construction in the field, etc. The desired issues remain.

  In a staircase in which the step member is mounted so as to be bridged over a plurality of parallel girders, the step member supports the load between the girders, and the deflection becomes large when the rigidity of the step member is small. At this time, the adhered stone material cannot follow a large bending deformation, and there is a possibility that a crack may occur. In particular, when the interval between the parallelly arranged girders is large, the bending moment generated in the step member is also increased, and the possibility that the stone material is cracked increases.

Further, the step member needs to be accurately adjusted and fixed. In the staircase described in Patent Document 2, the height of the step member (step plate) can be adjusted, but the position for receiving the step member becomes high. In other words, a support base is fixed on the beam material made of steel, and the bracket that receives the step member is supported by the bolt so that it can be moved up and down by a bolt, from the lower surface of the beam material to the tread of the stairs. Height increases. For this reason, the installation position of stairs may be restricted. On the other hand, in the technique of attaching a step member to a girder made of steel by welding, the step member is generally attached directly to the girder, and the step member can be fixed at a low position. However, as shown in FIG. 3 of Patent Document 1, the mounting piece of the step member is welded to the upper surface of the beam, and it is difficult to accurately adjust the height of the step member.

  The present invention has been made in view of the above-described problems, and the purpose thereof is to provide a step member having a large rigidity, capable of suppressing deflection to a small extent, and having good workability and height adjustment. It is also to provide a staircase that can be done easily.

  In order to solve the above problem, the invention according to claim 1 is a staircase in which a step member for each step is fixed over a plurality of parallel girders provided at an inclination, The step member is formed by arranging two tubular members made of steel having a box-shaped cross section in parallel with the nose side and the kick side, and connecting them with a connection member. A staircase supported and fixed by a bolt standing from the upper surface of the girder is provided.

In this staircase, the step member supports the load with a steel tubular member having a box-shaped cross section, and can have a large bending rigidity at the height of one step of the staircase. Therefore, the plurality of girder members that support these step members can be arranged at intervals, and the construction cost of the stairs can be reduced. In addition, the effective width of the stairs can be set large.
In addition, the bending amount of the step member is improved, so that the amount of deflection is reduced, and when stone or concrete board is applied to the tread surface and the kicking surface, peeling and cracking are reduced and durability is improved. To do.
On the other hand, since the step member is supported by a bolt erected on the girder, the height can be easily adjusted, and the construction accuracy can be greatly improved. Moreover, since the connection member supported with a volt | bolt is provided between two tubular members, it can also suppress that a step member becomes a position higher than the upper surface of a girder.

  According to a second aspect of the present invention, in the staircase according to the first aspect, the two tubular members are connected to each other with a space therebetween, and the upper surface is continuous by the steel plate material spanned between them. The connecting member is attached below the upper surface of the tubular member, and the steel plate material spanned above the joint with the bolt that supports the connecting member can be pulled up and detached. Shall.

In this staircase, the joint between the step member and the bolt that supports the step member can be operated from above the step member by removing the steel plate material provided in the upper portion. Therefore, the step member can be attached from below or above the staircase, or from the middle step portion. Moreover, after attaching all of the step members, only a part can be removed for repair or repair.
On the other hand, when this staircase is applied to a temporary staircase, the step member can be diverted and used repeatedly.

  The invention according to claim 3 is the staircase according to claim 1, wherein the tubular member on the nose side of the step member is provided with an opening in a vertical surface forming a kick-in portion, and the opening in the tubular member It is assumed that a display device in which light emitting elements are combined is mounted at a corresponding position.

  In this staircase, since the load on the step member is supported by a tubular member made of steel, the vertical surface of the tubular member can have sufficient rigidity even if some cutouts are provided. Further, a space that is separated from the outside in the pipe and is protected even when a mechanical device or the like is accommodated is formed. Therefore, it is assumed that a display device in which the light emitting elements are combined is built in the tube, and the display surface is arranged facing the kick surface, whereby advertisements, news, and the like can be displayed on the kick surface. The kicking surface is easy to attract the attention of a person going up the stairs and has a great advertising effect.

  As described above, in the staircase of the present invention, the staircase member can be improved in rigidity, and a staircase having a large effective width can be constructed economically. Further, the step member can be easily attached and detached, and repair and repair can be easily performed. In addition, a display device using a light emitting element can be incorporated in the kick-in portion, and a large advertising effect can be obtained.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic sectional view of a staircase according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view. 3 is a schematic perspective view showing a state in which the step members of the staircase shown in FIG. 1 are mounted on the beam, and FIG. 4 is a plan view.
In this stairs, a plurality of step members 2 are fixed so as to be bridged over two steel beams 1 supported diagonally, and each step is formed. The step members 2 are independent for each step. Are arranged at predetermined intervals.

  The step member 2 includes a tubular member 21 disposed on the nose side, a tubular member 22 disposed on the kick side, and a fixed member that connects these members in the vicinity of both ends and is fixed to a bolt standing from a girder. Between the connecting member 23 for use, the intermediate connecting member 24 for firmly connecting the two tubular members between the fixing connecting members 23, and the intermediate connecting member 24 provided with a plurality of members. The steel plate member 25 provided so as to connect the vicinity of the upper surface between the two tubular members 21 and 22 and the upper portion of the position where the connecting member 23 for fixing is provided so as to be bridged between the two tubular members 21 and 22. The main part is comprised with the steel plate material 26 for the junction part coating | covering mounted.

The two tubular members 21 and 22 are both made of steel and have a box-shaped cross section. These have a slightly thin cross-section of about 4.5 mm, but because the cross-section is a box-like closed shape, not only the bending rigidity is large, but also the torsional rigidity is large. Even if a large load acts on the member, the deformation can be suppressed to a small level.
Moreover, the tubular member 21 on the nose side has a larger vertical dimension (beam height) than the tubular member 22 on the kick side, and can resist a large load generated near the nose.

  The fixing connecting member 23 is made of a steel plate-like member, and is joined to each of the opposed vertical surfaces of the two tubular members 21 and 22 by welding. The position in the height direction where the fixing connecting member 23 is attached is below the upper surface of the tubular members 21 and 22 and slightly above the bottom surface of the tubular member 22 on the kick side. A through hole through which a bolt for fixing the stepped member 2 can be inserted is provided at a substantially central portion of the connecting member 23 for fixing.

  The intermediate connecting member 24 is a steel member having a box shape in the same cross section as that of the tubular member 22 on the kick side, and the end surfaces are abutted against the opposing vertical surfaces of the two tubular members 21 and 22 and are welded. It is joined.

  The steel plate material 25 is bridged between two tubular members 21 and 22 connected to each other by connecting members 23 and 24, and the edge is joined to the vicinity of the upper edge of each of the two tubular members 21 and 22 by welding. Has been. And the upper surface is adjusted so that it may become substantially the same height as the upper surface of the two tubular members 21 and 22. FIG.

  The steel plate material 26 for covering the joint is bridged so as to be placed on the two tubular members 21 and 22 above the position where the fixing connecting member 23 is provided. A plurality of protrusions 26a are provided on the lower surface, and are fitted into recesses or holes 21a provided on the upper surfaces of the tubular members 21 and 22 so as to restrain the position of the steel plate material 26 from moving. ing. Further, since the steel plate material 26 for covering the joint portion is placed on the tubular members 21 and 22 and can be attached and detached, the tubular members 21 and 22 or the chain member 30 with the chain 30 in order to prevent theft or the like. The connecting members 23 and 24 are connected.

On the upper surface of the step member 2, a stone material 27 for a tread surface formed in a thin plate shape is attached with an adhesive. These stone materials are bonded to the upper surface of the tubular members 21 and 22 and the steel plate material 25 bonded in the vicinity of the upper edge thereof, and 27b bonded to the steel plate material 26 for covering the joint portion. The thicknesses are different, and are adjusted so that the upper surfaces of both are substantially coincided with each other. Further, a thin plate-like lifting stone 28 is attached to the kicking surface of the step member 2, and a nose stone 29 is attached to the tip of the tread surface.
In FIG. 3, description of the stone material 27 for the tread surface, the lifting stone 28, and the stair stone 29 is omitted.

On the other hand, the girder 1 that supports the step member 2 is supported in an inclined state by a column 4 as shown in a schematic perspective view in FIG. 5, and the two are arranged in parallel. And in order to support each of the several step member 2 on the upper surface, the support stand 11 is provided, and the volt | bolt 12 is erected on it. Auxiliary pedestals 13 and 14 for supporting the bottom surfaces of the two tubular members 21 and 22 are provided at positions above and below the upper surface of the beam from the position where the support gantry 11 is provided, respectively. This step member is provided.
The auxiliary mounts 13 and 14 are configured such that an elastic pad 16 is laid on the upper surface, a step member is placed thereon, and the connecting member 23 for fixing and the bolt 12 can be joined. Even after the step members 2 are joined, the step members 2 are supported in an auxiliary manner to suppress a large displacement.

  Two nuts 15 a and 15 b are screwed to the bolt 12, and a connecting member 23 for fixing the step member is sandwiched and fixed between them. And the height of the step member 2 can be easily adjusted by rotating the nut 15a and adjusting the height.

In such a staircase, the tubular members 21 and 22 spanned between the two girders have a large rigidity, and even when a large load acts on the step member, the displacement can be suppressed small. Therefore, the interval between the digits 1 can be increased, and a wide staircase can be constructed at a low price.
Further, the height of the step member 2 can be easily adjusted, and the construction accuracy is also good.

Furthermore, a display device using a light emitting element such as a light emitting diode (LED) can be incorporated in the step member used in the staircase.
FIG. 6 is a cross-sectional view showing a step member 2 ′ in which the display device 3 is incorporated.
This step member 2 ′ incorporates a display device 3 using LEDs inside a tubular member 21 ′ that supports the load on the tread surface, and includes a display panel 31 in which a large number of LED elements 31a are arranged. And a control unit 32 for controlling blinking of the LED elements. An opening is provided in the portion corresponding to the standing nose side of the tubular member 21 ′, that is, the kicking surface, and the display surface of the display panel 31 is attached from the opening to the outside. A transparent tempered glass 33 is attached to the outside of the tubular member 21 ′ in place of the raising stone to protect the display panel 31.

  As shown in FIG. 7, the display device 3 as described above can display characters, simple figures, and the like, with LED elements blinking on the kicked surface of the staircase, and display advertisements and news. It can be performed. The rise surface of the staircase is easily noticeable by people climbing the staircase and alerts them by emitting light. Therefore, a large advertising effect can be obtained.

It is a schematic sectional drawing of the staircase which is one Embodiment of this invention. It is an expanded sectional view of the stairs shown in FIG. It is a schematic perspective view which shows the state which attached the step member of the staircase shown in FIG. 1 on the girder. It is a schematic plan view of the stairs shown in FIG. It is a schematic perspective view which shows the structure of the beam before the step member of the staircase shown in FIG. 1 is attached. FIG. 2 is a schematic cross-sectional view of a step member that can be used in the staircase shown in FIG. 1 and that incorporates a display device using a light emitting element. It is a front view of the staircase using the step member shown in FIG.

Explanation of symbols

1: digit, 2: step member, 3: display device, 4: support column,
11: Support frame, 12: Bolt, 13, 14: Auxiliary frame, 15: Nut, 16: Elastic pad,
21: Tubular member on the nose side, 22: Tubular member on the kick side, 23: Connecting member for fixing, 24: Connecting member in the middle part, 25: Steel plate material, 26: Steel plate material for covering the joint, 26a: Projection, 27: Stone material for tread, 28: Lifting stone, 29: Nodal stone, 30: Chain, 31: Display panel, 31a: LED element, 32: Control device, 33: Tempered glass

Claims (3)

A staircase fixed on a plurality of parallel girders provided at an angle so as to bridge a step member for each step,
The step member is formed by arranging two tubular members made of steel having a box-shaped cross section in parallel with the nose side and the kick side, and connecting them with a connecting member.
The staircase characterized in that the connecting member is supported and fixed by a bolt erected from the upper surface of the beam. The two tubular members are connected to each other at an interval, and the upper surface is joined so as to be continuous by a steel plate material spanned between them,
The connecting member is attached below the upper surface of the tubular member, and the steel plate material spanned above the joint portion with the bolt that supports the connecting member can be pulled up and detached. The staircase according to claim 1. The tubular member on the nose side of the step member is provided with an opening on the vertical surface forming the kicked portion,
The staircase according to claim 1, wherein a display device in which light emitting elements are combined is mounted at a position corresponding to the opening of the tubular member.

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