JPH0230843A - Steel framed unit stair - Google Patents

Abstract

PURPOSE:To eliminate the placement of concrete or mortar and to greatly shorten a construction period by producing finished products of each part of stairs at a factory and assembling and forming the finished products with a touch-and-go skill at a site. CONSTITUTION:Temporary step boards 5 and landing units 6 are integrally mounted to a pair of bridge boards 7 for form temporary units 3. The temporary units 3 are erected between beams to form temporary stairs 2. Step board panels 11 and landing panels 65 as finished members are respectively mounted on the temporary step boards 5 of the temporary stairs 2 and on the surface of the landing units 6 and, at the same time, rise covers 15 are mounted to a rise section to form steel framed unit stairs.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention involves constructing a temporary unit between the beams of a building, etc., using it as a temporary staircase during construction, and then installing a finishing member on top of the temporary staircase. This relates to a steel unit staircase that is attached to a steel frame unit.

(Prior Art) In recent years, buildings have tended to become taller, and various materials and construction methods are required to be lighter and more rational. The steel frame unit stairs used in such buildings are formed by the wet method of applying mortar to the steel frame stairs assembled together with the steel frame, or by pasting a surface finishing material on the surface of the steel frame stairs. ing.

(Problem to be solved by the invention) However, in the conventional steel unit stairs mentioned above,
After applying mortar and applying surface finishing materials, there was a problem in that the stairs could not be used for a considerable period of time until the mortar had cured, which was an obstacle to shortening the construction period. In addition, when using stairs, there are problems such as occurrences before walking.

Therefore, the present invention has both the function of a temporary staircase as a work scaffold during construction and the function of an original staircase after construction is completed, and each part of this staircase is manufactured in a factory, so that it can be used on site. To provide a steel frame unit staircase, which shortens the construction period by only performing the work of constructing a temporary unit and installing each finishing member, and which has a staircase structure that takes measures before walking and improves the feeling of stepping. The purpose is to

(Means for Solving the Problem) In order to achieve the above object, the steel frame unit staircase of the present invention is constructed by installing a temporary unit in which a temporary tread and a landing unit are integrally attached to a pair of stringers into a building. etc., to form a temporary staircase, and attach a tread panel and a landing panel as finishing members to the upper surface of the temporary tread board and the landing unit of the temporary staircase, respectively, and attach a riser cover to the riser part. A characteristic feature of the structure is that

(Function) During construction, a temporary unit made by fixing temporary treads to a pair of stringers and integrally assembling a landing unit can be used as a temporary staircase by erecting it between the beams of a building, etc. After completion, tier panels, landing panels,
Finishing members such as and riser covers are each fixed to the temporary staircase to construct a steel unit staircase.

This steel frame unit staircase is built using the so-called dry method, and is formed by incorporating each part of the staircase produced at the factory without pouring concrete or mortar on site, which significantly shortens the construction period. It is possible to achieve significant shortening.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the steel unit staircase of the present invention is composed of a temporary unit 3 that constitutes a temporary staircase 2, and a finishing member 4 that is attached to the temporary staircase 2.

The temporary unit 3 is constructed by assembling a pair of stringers 7, a temporary step board 5, a landing unit 6, etc. in a factory, and the temporary unit 3 is fixed to the steel support beam 8 of the building by welding or the like to form the temporary staircase 2. will be formed and used as work scaffolding during construction.

Details of the temporary unit 3 are shown in FIGS. 1 to 6. First, the rear end 5a of the temporary step plate 5 is bent upward at a right angle, and then folded back at a right angle toward the front. A folded portion 5b having a U-shaped cross section is formed, and rear brackets 9 are provided at both left and right ends of the folded portion 5b. Furthermore, a receiving metal fitting 12 that engages with the stepped panel 11 and a stopper receiving member 14 that holds a stopper 13 fixed to the riser cover 15 are disposed on the folded portion 5b. A receiving fitting cover 75 is attached to this receiving fitting 12 in order to protect the receiving fitting 12 and the stopper receiving member 14 and improve safety when the temporary staircase is used (see FIG. 3). On the other hand, the front end portion 5c is bent downward at a right angle, then folded back at a substantially right angle, further bent downward at a right angle, and then folded back at a right angle at the front to form a wave-shaped cross section. An insertion hole 18 through which a bolt 17 for fixing the hook 16 is inserted is formed in the front surface 5e of the second folded part 5d, and front brackets 19 are formed at both left and right ends of the second folded part 5f.
is provided. In addition, these brackets 9.19
A nut 20 is welded in advance to (see FIG. 4).

The effect of the temporary step board 5 having such a complicated bent cross section is that, firstly, it increases the contact area with the stringer 7, thereby ensuring the connection between the two, and the temporary unit 3.
Second, by increasing the widthwise rigidity of the temporary tiers 5 themselves, and thirdly, by hiding the mounting members of the temporary tiers 5 and the tier panels 11, etc. be. Further, the rib 21 and the reinforcing plate 76 attached by spot welding or the like increase the rigidity in the depth direction over the entire surface of the temporary step plate 5.

As shown in FIGS. 5 and 6, the landing unit 6 is formed by attaching a landing floor plate 23 to a beam assembly unit 22 by welding or the like. The beam assembly unit 22 is composed of a large beam 22a, a small beam support beam 22c1, and a small beam 22b disposed between the small beam support beams 22c, and supports the landing board 23. Mounting brackets 24 are provided at both left and right ends of the girder 22a, and a hook mounting plate 25 for fixing the landing panels 48, 65, etc. is welded to the upper surface of the landing floor plate 23.

Now, the stringer girder 7 and the temporary step plate 5 and the stringer girder 7 and the landing unit 6 are connected by fastening ports 27 and bolts 70, respectively. That is, when looking at the temporary step board 5, the rear bracket 9 and the front bracket 19 are attached in a state slightly retracted from the side end surface 5g of the temporary step board 5. And stringer 7
The bolt 27 inserted through the bolt insertion hole 28 is inserted into the nut 20.
By screwing and tightening the bracket 9.19, the bracket 9.19 can be bent within a range that does not undergo plastic deformation, and its elastic force is applied to the side end surface 5g, thereby strengthening the connection between the temporary step plate 5 and the stringer girder 7.
(See Figure 4). Further, the mounting bracket 24 of the landing unit 6 has a similar structure and effect, and the same structure is used for, for example, coupling the small beam 22b of the landing unit 6 with the small beam support beam 22e. The ports 27 and nuts 20 used here are preferably high-strength bolts and nuts for friction bonding.

Causes 7 to 16 show the completed steel unit staircase l.
An example of this is shown.

FIG. 7 shows a state in which the tread panel 11 and the riser cover 15 are mounted and fixed on the temporary tread 5, that is, the completed stair step (elevating part).

The structure of the stepped panel 11 shown in the figure will be explained as follows.
The top panel 30 and the back panel 31 are overlapped in a hollow shape, and both edges of their long sides are bent and crimped to be integrated. The top portion 31b is fixed to the top panel 30 by fastening means 40 such as driven rivets or caulking, and end caps 71 are attached to both ends of the roughly short sides. The hollow portion formed by the top panel 30, the back panel 311, and the end cap 71 is filled with an inorganic filler 32 such as mortar. The inorganic filler 32 is easily and completely filled by injecting the stepped panel 11 with the injection lower 8 positioned upward and sealing with the cap 77 (see FIG. 8). Further, ribs (not shown) are provided on the back panel 31 at appropriate intervals. With the above-described structure, the rigidity of the stepped panel 11 is increased, so the panel thickness is reduced, and weight and cost can be reduced, and impact sound is absorbed by the inorganic filler 32.

The rear end portion 11a of the tier panel 11 is provided with a rear attachment portion 33 that engages with the receiving bracket 12 of the temporary tier panel 5, while the front end portion 11b is provided with a front attachment portion that engages with the hook 16. The riser cover receiver 34 and the riser cover receiver 37 to which the riser cover receiver 37 that engages with the riser cover 15 are attached are provided with a holding portion 35 .

A surface finishing material 38 made of synthetic resin, such as a tile carpet or a vinyl chloride sheet, is laid and fixed on the upper surface of the stepped panel 11 to absorb a light impact from a pedestrian or the like. Also,
An anti-slip material 39 is attached to the front end portion 11b.

Then, on the bottom surface of the tiered panel 11, glass wool, etc.
A sound absorbing/buffering unit 411 and a stepped cushion 42 configured from the above are attached. This sound absorption/buffer unit 41 absorbs heavy impact sounds caused by jumping and collisions, provides a suitable stepping feeling when walking, and also absorbs scratches and irregularities on the surface of the temporary tier board 5 to prevent rattling of the tier panel 11. This is to prevent On the other hand, the tiered cushion 42 prevents the tiered panel 11 from sinking or deforming when a load is locally applied to the end of the tiered panel 11.

Now, the structure and method for attaching the tier panel 11 to the temporary tier board 5 will be explained. First, the rear attachment part 33 provided on the rear end 11a of the stepped panel 11 is inserted into the receiving metal fitting 12 provided on the temporary stepped board 5 via the packing 45, and the front end 11b is pushed down using a jig. Next, the upper part 16a of the hook 16 is engaged with the front attachment part 34 via the hook cover 36, the lower part 16b is aligned with the bent part 5h of the temporary step board 5, and the port insertion hole 43 is inserted into the temporary step board 5. The seven hooks 16 are fixed by tightening the bolts 17 and nuts 90 while being engaged with the ports 17 that have been welded and fixed in advance. In addition, the packing 45 and the hook cover 3
6 is made of a shock/vibration absorber such as rubber material.

In this way, the tier panel 11 is connected to the temporary tier plate 5 via the compressed sound absorption/buffer unit 41 and the tier cushion 42.
A gasket 45 is interposed between the rear mounting portion 33 and the receiving metal fitting 12, and a hook cover 36 is interposed between the front mounting portion 34 and the hook 16. In other words, the tiered panel 11 has a structure that prevents the generation of noise from the contact parts because there is no metal contact with the temporary tiered boards 5 or mounting members such as the hooks 16, and further suppresses the propagation of shock and vibration. Therefore, the incidence of resonance, resonance, etc. with other members is reduced.

By producing the tiered panels 11 in a factory, the quality can be made uniform and costs can be reduced, and since the tiered panels 11 can be easily installed on the temporary tiered panels 5 with a single touch, the construction period can be reduced. can be significantly shortened.

The riser cover 15 is made of a single plate made of, for example, stainless steel, and is molded by pressing, 7-ohm processing, or the like. That is, an upper end engaging part 46 and a lower end engaging part 47 are provided, the upper end retaining part 46 extends upward almost vertically, and the lower end retaining part 47 consists of a horizontal portion 47a and a curved surface portion 47b, and extends horizontally. A stopper 13 is attached to the portion 47a. Also, riser cover 1
A riser cover cushion 72 is attached to a portion that comes into contact with the hook 16 when the 5 is attached to the stairs. Here, the step 46a formed by pressing slightly below the upper end retaining portion 46 and the curved surface portion 47b of the lower end retaining portion 47 strengthen the rigidity of the riser cover 15.

To attach the riser cover 15, the upper end engaging part 46 is engaged with the riser cover receiver 37 attached to the holding part 35 of the temporary step board 5, and then the stopper 1
This is done by engaging the lower end retaining portion 47 to which 3 is fixed to the stopper receiving member 14 of the temporary step board 5. At this time, the claw 14a of the stopper receiving member 14 prevents the stopper 13 from being removed. These riser cover receivers 37, stoppers 13, and riser cover cushions 72 are resin parts, and by eliminating metal contact between the riser covers 15 and other members, they suppress the generation of noise and the propagation of shocks and vibrations. ing.

As mentioned above, the riser cover 15 can be easily and securely installed with one touch, has excellent replaceability and maintainability, and also fixes each component of the temporary tier board 5 and the tier panel 11. This has the effect of hiding the hooks 16 and other members for making the staircase surface look beautiful.

FIG. 10 shows another embodiment of the stepped panel and riser cover.

According to this embodiment, regarding the tiered panel 11, the tiered panel 11 is placed on the temporary tiered plate 5 and the seven hooks 16 are engaged in a predetermined position, and then the pole 1-81 is inserted from the front side. and tighten it with nut 80. This nut 80 is fixed in advance to the temporary step plate 5 by projection welding. Further, the nut 80 has a cover 80a on its screw hole.
is attached to improve the appearance and prevent dust from entering. On the other hand, on the lower surface, a portion having a U-shaped cross section provided at the longitudinal edge of the tiered plate cushion 83 is fitted with the tiered plate panel 11, and the tiered plate cushion 83 comes off due to lateral displacement of the tiered plate panel 11, etc. It is prevented from being removed.

Next, regarding the riser cover 15, the stepped panel 11
The riser cover receiver 79 is attached to the holding part 35.
The riser cover 15 is provided with a large opening toward the front, which makes insertion of the riser cover 15 extremely easy. End covers 82 are provided on both left and right edges of the riser cover 15 to eliminate the gap with the stringers 7, and the installation of the riser cover 15 depends on the stringers 7, step panels 11, etc. This prevents the parts from being scratched or the paint from peeling off (
(See Figure 11).

FIG. 12 shows yet another embodiment.

Here, the rear end 100a of the temporary step board 100 is bent upward at a right angle, and then folded back at a right angle to the front side to form a folded portion 100b.
Rear brackets 101 are provided at both left and right ends of b. Further, a receiving metal fitting 103 that engages with the stepped panel 102 is provided on the folded portion 100b. Note that 130 in the figure indicates a parting plate. On the other hand, the front end portion 100c is bent downward at a right angle and then folded back at a right angle to form a folded portion 100c.
A front bracket 104 is provided at d, and an insertion hole 107 into which a bolt 106 for fixing the seven hooks 105 is inserted is formed at the front surface 100e. This temporary step board 100 is
It is fixed to a stringer (not shown) by bolts 108 and nuts 109.

The stepped panel 102 includes a top panel 110 and a back panel 1.
11 are overlapped in a hollow shape, and both edges of the long sides thereof are bent and crimped to be integrated, and the top portion 11 of a plurality of approximately hemispherical recesses 111a formed in the back panel 111.
1b is fixed to the top panel 110 by fastening means 112 such as driven rivets or caulking, and end caps (not shown) are attached to roughly both ends of the short sides.

Then, a top panel 110, a back panel 111 . An inorganic filler 113 such as mortar is filled and sealed in the hollow portion formed by the end cap and the end cap. Furthermore, a sound absorbing/buffering unit 114 made of glass wool or the like and a step cushion 115 are attached to the lower surface. Further, a synthetic resin surface finishing material 116 such as carpet tiles or a vinyl chloride sheet is laid and fixed on the upper surface of the stepped panel 102, and an anti-slip material 117 is attached to the front end 102b.

Now, to explain how the tiered panel 102 and the temporary tiered panel 100 are connected, the rear end 102 of the tiered panel 102
A rear attachment portion 118 provided at a and a receiving metal fitting 103 provided at the temporary step plate 100 are engaged with each other via a packing 119. The front end portion 102b is fixed by seven hooks 105, but in detail, the front attachment portion 120 and the seven hooks 1
05 is engaged through the hook cover 121, and the lower part 105b is engaged with the bent part 100 of the temporary step board 100.
f, and these seven hooks 105 are engaged along the bolt 106.
and is fixed by screwing and tightening a nut 122.

Note that the gasket 119 and the hook cover 121 are made of a shock/vibration absorber such as rubber material.

According to this embodiment, the riser cover 123 is attached to a part of the riser so as to cover the joint portion between the temporary tier board 100 and the tier panel 102. The riser cover 123 has a substantially U-shaped cross section, and is connected to the connecting member 1.
24 and a riser cover cushion 125 are fixed. That is, the riser cover 123
4 of the locking claws 125 and the folded portion 100 of the temporary step board 100
The end of d, the protrusion 127 of the locking claw 126 and 77 ri 105
are engaged with each other, and the tip end portion 123a is engaged with the riser cover receiver portion 128 of the stepped panel 102. At this time, the protrusion 129 is pressed,
Its spring action makes the connection more secure.

Further, the riser cover cushion 125 prevents contact between the riser cover 123 and other members, and uses its elastic force to press the tip portion 123a to the riser cover receiver portion 128 to prevent rattling. .

FIG. 13 shows the landing panel 4B and 65 in the landing unit 6.
Shows the landing area where the is placed and fixed.

The landing panel includes a landing panel 48 used for the nosing part,
There is a landing panel 65 used for the tread, but its structure is the same except that the shape of the end portion, which will be described later, is slightly different.

Here, the landing panel 48 used for the nosing shown in the figure
To explain the structure, the top panel 49 and the back panel 50 are overlapped in a hollow shape, and both long edges thereof are bent and crimped to be integrated. Top 50b of hemispherical recess 50a
is fixed to the top panel 49 by fastening means 51 such as driven rivets or caulking, and end caps (not shown) are attached to both ends of the short sides. A hollow portion formed by the top panel 49 and the back panel 50 is filled with an inorganic filler 52 such as mortar. Further, ribs (not shown) are provided on the back panel 50 at appropriate intervals. The above-described structure increases the rigidity of the landing panel 48, so the panel thickness can be reduced, making it possible to reduce weight and cost, and the inorganic filler 52 absorbs impact noise.

On the lower surface of the landing panel 48, a sound absorption/buffer unit 55 made of glass wool or the like and a cushion material 56 are provided.
is attached. This sound absorption/buffer unit 55 is
It absorbs heavy impact sounds caused by jumping and collisions, provides a suitable stepping feeling when walking, and further absorbs scratches and irregularities on the surface of the landing unit 6 to prevent rattling of the landing panel 48. On the other hand, the cushion material 56 prevents the landing panel 48 from sinking or deforming when a load is locally applied to the front end of the landing panel 48.

The rear end portion 48a of the landing panel 48 has a rear retaining portion 59 that engages with the front retaining portion 57 of the adjacent landing panel 65.
, and a rear attachment portion 63 that engages with the hook 62, while a front attachment portion 60 that engages with the hook 16 and a riser cover receiver 37 that engages with the riser cover 15 are provided at the front end portion 48b. The riser cover receiver to be attached is provided with a holding portion 61. Here, the landing panel 65 for the tread differs from the landing panel 48 for the nosing in that a front attachment part 57 is formed at the front end 65b and a cushion material 74 is provided on the lower surface. In addition, the landing panel 48
An anti-slip material 54 is attached to the front end portion 48b of.

Now, the landing panel 48.65 is attached to the landing unit 6 from the panel closest to the tier panel 11, that is, from the landing panel 48 for the tier nosing.

First, install 7 ivy covers 3 on the landing unit 6 and the upper part 16a.
Fix the hook 16 to which 6 is attached with the nut 90,
Next, the front mounting portion 60 of the landing panel 48 is inserted into the gap between the landing unit 6 and the seventh hook 16, and then the rear end portion 4
8a, the hook 62 to which the hook cover 68 is attached is engaged with the rear attachment part 63, and the seven hooks 62 are fixed to the hook attachment plate 25 with screws 67.

The landing panel 65 for the tread to be attached next engages its front retaining portion 57 with the rear retaining portion 59 of the already fixed landing panel 48, and then, while pushing down the rear end portion 65a, attaches the rear attachment portion. 91 with 7 screws 62 (14th
(see figure). Note that a packing 66 is interposed between the front retaining portion 57 and the rear retaining portion 59. The landing panels 48 and 65 are laid on the landing unit 6 by sequentially repeating these operations. With such a structure, when a load is applied to the rear side of the landing panel, the load is received by the cushion material 74 from the rear attachment part 59 through the front attachment part 57, so that sinking and deformation can be prevented. .

FIG. 14 shows the structure of the wall side of the landing unit 6. That is, a spacer 86 formed at the same height as the landing panel is placed between the landing end panel 85, which is fixed in the same way as the landing panel 65, and the border 84. This spacer 86 is placed so that there is no gap with the landing end panel 85, and a spacer receiver 87 is fixed to the lower part of the spacer 86 with screws 88 to support the load applied to the spacer 86. In addition, 8 in the figure
9 is a gasket interposed between the lower surface of the spacer 86 and the landing unit 6.

After the landing panel is laid and the border side is treated in this way, a synthetic resin surface finishing material 53 such as tile carpet or vinyl chloride sheet is laid and fixed on the upper surface of the entire landing, and this absorbs light impacts before walking or the like. be exposed.

The construction and attachment of these landing panels 48 and 65 is basically the same as that of the stepped panel 11, and therefore the effect obtained thereby is also the same.

Here, another feature of the above-described steel frame unit staircase of the present invention will be explained with reference to FIG. 15.

Although the dimensions of the stairs vary depending on the building, the tread width can be changed and adjusted by changing the amount of overlap in the depth direction of the temporary treads 5 located above and below. For example, if the tread width is to be narrowed, the overlapping amount may be increased as shown in the figure. At this time, riser cover 15
Although it is necessary to extend the horizontal portion 47a, since the riser force (-15) is formed of a single plate, there is a large degree of freedom in processing, and this can be easily accommodated.

Next, regarding the riser height, if there is a slight error, it should be absorbed by the margin of the riser cover 15 and the riser cover receiver 37.79 (see Figures 7 and 13), and any further changes in the riser height should be made using the riser cover. Correspond by changing the height of -15 itself.

Note that since the stringers 7 are also formed by fusing, the shape can be easily changed.

(Effect of the invention) During construction, a temporary unit consisting of a temporary step plate fixed to a pair of stringers and a landing unit integrally assembled can be used as a temporary staircase by erecting it between the beams of a building, etc. After construction is completed, the finishing members, such as tier panels, landing panels, and riser covers, are each fixed on top of the temporary staircase to construct a steel unit staircase.

This staircase is built using the so-called dry method, which means that each part of the staircase produced at the factory is assembled without concrete or mortar on-site, and installation is easy with just one touch. Since it can be carried out in a number of steps, it is possible to significantly shorten the construction period and furthermore, it is possible to achieve a reduction in costs.

In addition, by laying a floor finishing material with a sound-absorbing effect on the top surfaces of the tier panels and landing panels, it will absorb light impact from pedestrians, etc., and provide sound absorption and buffering between the temporary stairs and the tier panels and landing panels. By interposing the unit, it absorbs the sound of heavy impacts such as collisions and provides a suitable stepping feeling, and the structure with no metal contact between each member suppresses the propagation of shock and vibration.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a temporary staircase of the steel frame unit staircase of the present invention, FIG. 2 is a perspective view showing the installation state of the temporary treads,
Figure 3 shows A in Figure 2 with the bracket cover attached.
4 is a detailed view of the bolted part of the temporary stairway, FIG. 5 is a plan view of the landing part of the temporary stairway, FIG. 6 is a sectional view of the same, and FIG. The figure is a cross-sectional view showing the steps in the completed state of the steel unit staircase of the present invention, FIG. 8 is a perspective view of the back side of the step panel, and FIG. 9 is the end of the short side of the step panel. Figure 1O is a cross-sectional view showing another embodiment of the stepped panel and riser cup for the same part as in Figure 7, and Figure 11 is a cross-sectional view taken from line B-B in Figure 10. FIG. 12 is a sectional view of the same part as FIG. 7 showing another embodiment, FIG. 13 is a sectional view showing the nosing of the landing in a completed state, and FIG. 14 is the same section as FIG. FIG. 15 is a cross-sectional view showing a part of the border, FIG. 15 is an explanatory view of changing the tread width, and FIG. 16 is a cross-sectional view of the staircase in a completed state. 2... Temporary staircase, 3... Temporary unit, 5... Temporary tread, 6... Landing unit, 7... String girder, 11... Tread panel, 15... Riser cover 48.65...Landing panel. Patent applicant: NTT Urban Development Co., Ltd. Naka Technology Research Institute Co., Ltd.

Claims (1)

[Claims] (1) A temporary unit constructed by integrally attaching a temporary tread and a landing unit to a pair of stringers is installed between beams of a building, etc. to form a temporary staircase, and the temporary tread of the temporary staircase A steel frame unit staircase, characterized in that a step panel and a landing panel are respectively attached as finishing members to the upper surface of the landing unit, and a riser cover is attached to the riser part.