JPH0589668U - Stair tread support structure - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide a support structure for a tread that allows easy adjustment of the lifted dimension and allows easy construction of stairs using a normal girder. [Structure] A hole is made in the upper portion of the slab 6 at a position vertically opposed to the position where the footboard 7a is arranged, and the anchor 3a portion of the support 1 is embedded together with a resin, a curing accelerator, and the like.
Therefore, the support column 1 is fixed to the slab 6. The horizontal plate 2 fixed to the upper end of the pillar 1 is brought into contact with the supporting members 1 and 2 from above so that the horizontal plate 2 is fitted into the recess 8a of the metal fitting 8 on the lower surface of the L-shaped step plate 7 so that the supporting members 1 and 2 are supported. Support 7. As described above, the L-shaped step plate 7 is sequentially arranged on the slab 6 to construct the stairs. The column 1 is moved up and down to adjust the lifted dimension.

Description

[Detailed description of the device]

The present invention relates to a support structure for a tread, such as a PC plate, in a stairway that is constructed on a structure made of reinforced concrete.

[0002]

[Prior Art]

 Conventionally, in the structure of stairs made of reinforced concrete, for example, a gill girder with a step formed on the upper surface is constructed from the lower floor to the upper floor, and the tread surface of the gill girder is processed into, for example, a Z shape. It is constructed by attaching tread plates such as checker plates through angle pieces.

That is, the tread portion has a structure in which it is directly supported by the tread surface of the step formed on the girder.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional footplate support structure, since the step is formed in the girder itself and the footstep is supported by the step part, it is necessary to thicken the girder by the amount of providing the step part and the step. There is a problem that it is time-consuming because it is necessary to perform a complicated bar arrangement form work in order to provide the section.

Further, once the step is formed on the girder, it is difficult to adjust the lifted dimension. The present invention has been made by paying attention to the above-mentioned problems, and it is possible to easily adjust the lifted dimension and to use a normal girder or an obliquely constructed concrete slab to make the stairs simple. The purpose of the invention is to provide a support structure for a footboard that can be constructed.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the supporting structure of the step board of the present invention is a structure in which a step board of a stair is supported on a slab or a girder obliquely arranged from the lower floor to the upper floor. Alternatively, it is characterized in that it is composed of a pillar fixed to a girder and extending upward and adjustable in expansion and contraction vertically, and a footboard support body integrally fixed to the upper end of the pillar and fixing the footboard to the upper surface. .

[0007]

[Action]

 There is no need to perform complicated reinforcing bar work to form steps on girders or slabs, slabs or girders are erected from the lower floor to the upper floor, and post-construction is performed on the footboard support position of the slab or girder Anchor bolt type stanchions are erected, and a footboard composed of a PC plate or the like is fixed to the footboard support at the upper end of the pillar to dispose the footboard, and the footboards are connected to each other by a riser board composed of a PC board or the like. Build stairs.

Further, by adjusting the length of the column, the lifted dimension of the column and the step plate fixed to the step plate support can be easily adjusted.

[0009]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. The support structure for supporting the footboard has the support column 1 and the support plate 2 as main constituent members. As shown in FIG. 1, the column 1 is composed of a rod-shaped lower member 3 and an upper member 4 and a tubular body 5 connecting both members 3 and 4. The post-installed anchor 3a is embedded in a lab or girder, and the male screw 3b is provided on the outer peripheral surface of the upper end portion. In addition, the upper member 4 is provided with a male screw 4a on the outer periphery of the lower end portion, and the central portion of the lower surface of the support plate 2 whose upper surface is horizontal is integrally fixed to the upper end surface. A female screw is provided on the inner peripheral surface of the sleeve 5, and the upper end of the lower member 3 and the lower end of the upper member 4 are screwed together from below and above to form the column 1. Then, by rotating the sleeve 5, the upper end surface of the lower member 3 and the lower end surface of the upper member 4 are moved away from each other or approaching each other in synchronization with each other, so that the strut 1 can be adjusted for expansion and contraction. ing.

The sleeve 5 of the column 1 has an outer peripheral surface having a hexagonal cross section or a flange (not shown) provided on the outer peripheral surface so that the sleeve 5 can be easily rotated by a tool such as a spanner. Has become. Further, the footboard 7 supported by the support 1 and the support board 2 as the support member is previously processed by a PC board to have an L-shaped vertical section, and a horizontal footboard 7a and a vertical indentation board 7b are integrally formed. ing. Further, metal fittings 8 are fixed to the left and right positions of the lower surface of the step plate portion 7a of the step plate 7 by stud bolts or the like. The metal fitting 8 has a recess 8a formed in the lower surface thereof, into which the support plate 2 can be fitted.

It should be noted that the support plate 2 and the metal fitting 8 constitute a step plate support. Next, a procedure for constructing a staircase using the support members 1 and 2 and the step board 7 will be described. First, a slab or girder (hereinafter referred to as a slab) 6 made of RC, PC, steel frame, etc. is diagonally installed diagonally from the lower floor to the upper floor.

This frame is carried out by a known frame means such as cantilevered support by walls or beams, or by hanging beams on the upper and lower floors and supporting them by the beams. Next, a hole is made in the upper part of the slab 6 at a position facing the position where the footboard 7a is arranged and vertically, and the anchor 3a part of the pillar 1 is embedded together with a resin and a curing accelerator. Therefore, the support column 1 is fixed to the slab 6 and set upright. As shown in FIG. 2, the pillars 1 are arranged so as to stand upright at two positions with respect to the slab 6 so as to support the respective treads 7.

Next, the foot plate 7 is brought into contact with the horizontal plate 2 fixed to the upper end of the column 1 from above so as to fit the recess 8a of the metal fitting 8 on the lower surface of the L-shaped foot plate 7. The tread plate 7 is supported by the support members 1 and 2. At this time, in order to prevent the horizontal plate 2 from coming out of the metal fitting 8 and the footboard 7 rising or rattling, for example, as shown in FIG. Hold the plate 2 down.

As described above, the L-shaped step plate 7 is sequentially arranged on the slab 6 to construct the stairs. At this time, the step plates 7 are fastened together with the angle pieces 9. That is, the angle piece 9 is brought into contact with the bolt 10 from below to the corner formed by the lower surface of the front end of the footboard portion 7a of the upper footboard 7 and the inner surface of the upper end of the lift portion 7b of the lower footboard 7. Close together.

A hole through which the mounting bolt 10 of the angle piece 9 is penetrated is a stupid hole. First, the upper and lower foot plates 7 are loosely coupled by being screwed together with a predetermined amount of looseness, and the pillar 1 The foot plate 7 is moved up and down by rotating the sleeve 5 to adjust the recess size, and then the bolt 9 is tightened to a predetermined torque to fix the upper and lower foot plates 7 to each other.

In the support structure of the step board 7 of this embodiment, the supporting members 1 and 2 are erected on the slab 6 without performing a complicated reinforcing bar work for forming a step on the slab 6. The stairs are constructed by a simple means in which the footboards 7 made of boards are fixed and the footboards 7 are tightly connected to each other. Further, even if it is necessary to change the recessed dimension of the footboard 7, the footboard 7 can be moved up and down by a simple means of rotating the sleeve 5 of the column 1, and the lifted dimension of the footboard 7 can be easily adjusted.

Further, since the metal fitting 8 is provided with the chin rest 8b, the step board 7 is prevented from rising from the support board 2 and rattling is suppressed. In the above embodiment, the metal piece 8 is fixed to the lower surface of the step board 7 and the metal piece 8 and the horizontal plate 2 are fitted together, but the lower surface of the step board 7 is a recess that can be fitted to the horizontal plate 2 of the supporting member. The horizontal plate 2 may be fitted into the recess from below, and the fixing of the horizontal plate 2 to the step plate 7 is not limited to the chin rest 8b, but may be performed by bolts or welding. The horizontal plate 2 may be fixed to the step plate 7 by means of the above.

In addition, in the above-described embodiment, the step plate 7 processed into an L shape is used, and the step plate portion 7a of the upper step plate 7 and the recessed portion 7b of the lower step plate 7 are connected via the angle piece 10. However, using the Z-shaped step plate 7, as shown in FIG. 4, a stupid hole is formed in the upper end portion 7b of the lower step plate 7 and the front end portion 7c of the upper step plate 7. The tread plates 7 may be connected by abutting the flat plate 11 made of steel or the like that is held and fastening with the mounting bolts 10.

The step board 7 is not limited to the L-shape or the Z-shape, and the step board and the indentation board are each formed of a separate flat PC board and have the same structure as described above. After the footboard 7 is supported by the slab 6 via the support members 1 and 2, the footboards 7a may be connected to each other by a bumper plate to construct a staircase. The slab 6 that supports the footboard 7 is only required to be able to support the lower end of the support column 1 of the support member. It may be constructed by removing the digit part of.

Further, in the above-mentioned embodiment, the structure is shown in which each footboard 7 is supported at two left and right positions in the width direction. However, if it is possible to support the footboard 7, only one central portion may support the footboard 7. The structure may be such that each tread 7 is supported at three or more places. Further, the support 1 may be fixed to the slab 6 by other known means such as fixing the lower end of the support 1 by welding.

[0021]

[Effect of the device]

 As described above, the stair foot support structure of the present invention has the effect that the lift size of each foot of the stair can be adjusted by a simple operation of moving the column up and down. In addition, since there is no need to perform complicated bar arrangement form work for machining the step shape on the girder, there is an effect that the stairs can be easily constructed using a normal girder.

Moreover, also in the steel gill girder, the foot plate can be similarly constructed on the RC by directly welding the support column 3 portion to the flange portion.

[Brief description of drawings]

FIG. 1 is a side view showing a tread support structure according to the present invention.

FIG. 2 is a top view showing a tread support structure according to the present invention.

FIG. 3 is a view showing a chin rest.

FIG. 4 is a side view showing a second shape of the footboard.

[Explanation of symbols]

 1 Support 2 Support 6 Slab 7 Foot 8 Metal fittings

Front page continuation (72) Inventor Yasuhiro Hayato 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Inventor Fumihiko Kaneko 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Taisei Construction Within the corporation

Claims (1)

[Scope of utility model registration request] 1. In a structure in which a step board of a stair is supported on a slab or girder obliquely arranged from the lower floor to the upper floor, the slab or girder is fixed and extended upward and vertically. A step board support structure for a staircase, comprising: a strut that is adjustable in expansion and contraction; and a step board support body that is integrally fixed to the upper end of the pillar and that fixes the step board to the upper surface.