JPH09328876A - Built-up stair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve construction efficiency by absorbing an error on the manufacture or assembly of a wall column and a tread and facilitating the integral bonding of the wall columns and the tread. SOLUTION: Treads 2 are installed alternately onto both side faces of a wall column 1 while changing the directions, and female screw fittings 8 opened to the side faces of steps are buried to the treads 2 in a built-up stair, in which the upper step sections of one treads 2 and the lower step sections of the other treads 2 are joined by pace boards mounted at both end sections of the short face sides of the wall columns 1. Large diametral holes 9 are formed as being penetrated through the wall column 1 in the thickness direction while bolts 13 having an outside diameter D3 sufficiently smaller than the inside diameter D1 of the large diametral holes 9 inserted into the large diametral holes from the wall column 1 side are screwed to the female screw fittings 8, and the wall column 1 and the treads 2 are combined integrally.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an assembly staircase constructed by combining members made of precast reinforced concrete.

[0002]

2. Description of the Related Art Conventionally, for example, a technique described in Japanese Patent Application Laid-Open No. 8-4233 has been proposed as an assembly staircase of this type. As shown in FIG. 7, this assembling staircase is composed of a wall pillar 1 made of precast reinforced concrete wall plates 1a, 1a, a step plate 2 and a landing plate 3, and these components are carried into the site and assembled and constructed. To be done.

That is, as shown in FIG. 8, the wall plates 1a,
On both side surfaces of the wall pillar 1 formed by joining 1a up and down,
The step plates 2 are alternately mounted in different directions, and one of the step plates 2
The upper step portion and the lower step portion of the other step plate 2 are joined by the landing plate 3 attached to both ends of the short side of the wall pillar 1. Further, as shown in FIG. 9, the bolt 5 inserted in the step 4 of the step plate 2
Bolt insertion holes 6a, 6 of the fixture 6 in which the wall is embedded in the wall pillar 1.
The wall post 1 and the step plate 2 are integrally connected by inserting the nut 7 into the projecting end a and screwing the nut 7 to the projecting end of the bolt 5.

However, due to an error in manufacturing or assembling the wall post 1 and the step plate 2, the bolt 5 inserted into the step 4 of the step plate 2 and the bolt of the fixing metal fitting 6 embedded in the wall post 1 are caused. It is extremely difficult to insert the insertion holes 6a into the insertion holes 6a, and as a result, the construction efficiency of the assembly stairs is significantly reduced.

On the other hand, the landing board 3 is shown in FIGS.
As shown in FIG. 3, the fitting groove 3A is fitted into the fitting groove 1A and joined to the wall post 1, and the upper and lower steps of the step plate 2 are joined respectively.

However, since the relationship between the wall pillar 1 and the landing board 3 is simply that the fitting groove 3A is fitted in the fitting groove 1A, particularly in the landing board 3 on the opposite side of the building. The landing board 3 cannot be supported by a sufficient supporting force.

[0007]

That is, in the conventional assembly stairs, the wall column and the step plate are integrally connected to each other because the bolt on the step plate side is attached to the wall column side due to an error in manufacturing or assembly. There is a drawback in that it is extremely difficult to insert the bolt into the bolt insertion hole of the fixture, and as a result, the construction efficiency of the assembly stairs is significantly reduced. Also, in the joint structure of the wall pillar and the landing board,
In particular, there is a drawback that the landing board on the opposite side of the building cannot be supported by a sufficient supporting force.

Therefore, the invention of claim 1 absorbs an error in manufacturing or assembling the wall pillar and the step plate, facilitates the integral connection of the wall pillar and the step plate, and improves the construction efficiency. The purpose is to provide an assembly staircase that can

Further, according to the second aspect of the present invention, the landing board on the opposite side of the building is supported by a sufficient supporting force, and an error in manufacturing or assembling the wall pillar and the landing board is absorbed to prevent the wall. It is an object of the present invention to provide an assembly staircase that facilitates the integral connection of a pillar and a landing board and can improve the construction efficiency.

[0010]

In order to achieve the above object, the invention of claim 1 is such that the step plates are alternately mounted on both side surfaces of a wall pillar formed by joining the wall plates in the vertical direction. In the assembly staircase in which the upper step part of one step plate and the lower step part of the other step plate are joined by landing boards attached to both ends of the short side of the wall pillar, an opening is made on the side surface of the step to the step plate. A female screw fitting is embedded, a large-diameter hole is formed through the wall column in the thickness direction, and an outer diameter sufficiently smaller than the inner diameter of the large-diameter hole inserted from the wall column side into the large-diameter hole. It is characterized in that a wall post and a step plate are integrally connected by screwing a bolt having a diameter to the female screw fitting.

In order to achieve the above-mentioned object, the invention of claim 2 is such that step plates are alternately attached to both side surfaces of a wall pillar formed by joining the wall plates in the up-down direction, and the step plates are attached alternately. In an assembly staircase in which the upper step portion and the lower step portion of the other step plate are joined by landing boards attached to both ends of the short side of the wall pillar, a beam member that supports the landing board is integrally formed on the wall board. In this beam member, a female screw metal fitting that is open on the support surface of the landing plate is embedded, and a large diameter hole is formed through the landing plate in the thickness direction, and the large diameter hole is inserted from the landing side. A bolt having an outer diameter sufficiently smaller than the inner diameter of the large-diameter hole is screwed to the female screw fitting so that the wall post and the landing plate are integrally connected.

According to the invention of claim 1, the wall pillar and the step plate are manufactured by the difference between the inner diameter of the large diameter hole formed through the wall pillar and the outer diameter of the sufficiently small bolt. It is possible to absorb an error in assembly or assembly.

According to the second aspect of the present invention, the landing plate is supported by the beam member of the wall plate, and the bolt is screwed to the female screw fitting, so that the landing plate is firmly integrated with the beam member. can do. Also, due to the difference between the inner diameter of the large diameter hole formed through the landing plate and the outer diameter of the sufficiently small bolt, it is possible to absorb the manufacturing or assembly error of the beam and the landing plate. it can.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention; The feature of the invention according to claim 1 resides in an integrally coupled structure of the wall pillar and the step plate,
Since other configurations are not different from those of the conventional example, the description of their structures and operations will be omitted. In FIG. 1, a step plate 2 is provided on a side surface 4A of a plurality of steps 4 at appropriate intervals in its longitudinal direction (however, in FIG. 1, only one step 4 is shown). The open female screw metal fitting 8 is embedded, and the wall post 1 has a plurality of large-diameter holes 9 penetrating in the thickness direction at intervals equal to the embedding space of the female screw metal fitting 8 (however, in FIG. Only the large diameter hole 9 is shown). A resin sleeve 10 is housed in these large diameter holes 9. Further, on the outer end side of the large diameter hole 9, a recess 11 having a relatively large diameter is formed in order to facilitate a screwing operation of a bolt described later.

The wall post 1 and the step plate 2 are integrally connected by the following procedure. That is, as shown in FIG. 2, a plurality of female screw fittings 8 on the step plate 2 side are opposed to the plurality of large-diameter holes 9 of the wall pillar 1 that has already been erected, and the side surface 4A of the step 4 is formed.
The step plate 2 is appropriately supported in a state where the step plate 2 is brought into contact with the wall pillar 1. Next, as shown in FIG. 3, a bolt 13 having a washer 12 having an outer diameter D2 larger than the inner diameter D1 of the large diameter hole 9 is attached to the large diameter hole 9 from the outside of the wall column 1, The male screw portion 13A at the tip is screwed into the female screw fitting 8 and screwed. Thereby, the step plate 2 is integrally connected to the wall pillar 1. The outer diameter D3 of the bolt 13 is set to a value sufficiently smaller than the inner diameter D1 of the large diameter hole 9 as well as the inner diameter D4 of the resin sleeve 10. As a specific example, the inner diameter D1 of the large diameter hole 9 = 40 mmφ, the outer diameter D2 of the washer 12 = 50 mmφ,
The inner diameter D4 of the resin sleeve 10 is set to 35 mmφ and the outer diameter D3 of the bolt 13 is set to 20 mmφ.

Thus, the large diameter hole 9 having the large inner diameter D1
Then, a bolt 13 having an outer diameter D3 which is sufficiently smaller than the inner diameter D1 is inserted into the male screw portion 13A to form the female screw fitting 8
Since the wall post 1 and the step plate 2 can be integrally connected to each other by being screwed to, the difference between the inner diameter D1 of the large diameter hole 9 and the outer diameter D3 of the sufficiently small bolt 13 can be obtained. By wall pillar 1
Therefore, an error in manufacturing or assembling the step plate 2 can be absorbed. For this reason, the wall pillar 1 and the step plate 2 can be easily connected integrally, and the construction efficiency of the assembly stairs can be improved.

Next, an embodiment of the present invention will be described with reference to the drawings. The feature of the invention according to claim 2 resides in that the wall pillar and the landing plate are integrally connected, and other configurations are not different from the conventional example.
A description of these structures and operations will be omitted. In FIG. 4 and FIG. 5, the beam 1B supporting the landing plate 3 is integrally formed on the wall plate 1a, and the supporting surface 1C of the landing plate, that is, the supporting surface 1C of the landing plate, that is, with an appropriate interval in the longitudinal direction of the beam 1B. Upper surface 1
A plurality of (for example, two) female screw fittings 8 opening in C are embedded, and the landing plate 3 has a plurality of (for example, 2) penetrating in the thickness direction with an interval equal to the embedding interval of the female screw fittings 8.
Large diameter holes 9 are formed. A resin sleeve 10 is housed in these large diameter holes 9. Further, on the outer end side of the large diameter hole 9, a recess 12 having a relatively large diameter is formed in order to facilitate the screwing operation of a bolt described later.

The wall pillar 1 and the landing board 3 are integrally connected by the following procedure. That is, the landing board 3 is placed on the beam 1B of the wall pillar 1 that has already been erected, and the large-diameter hole 9 on the landing board 3 side is opposed to the female screw fitting 8 on the side of the beam 1B.
Next, the bolt 13 to which the washer 12 having the outer diameter D2 larger than the inner diameter D1 of the large diameter hole 9 is attached is inserted from the upper side of the landing plate 3 into the large diameter hole 9, and the male screw portion 13A at the tip thereof is inserted. It is screwed into the female screw fitting 8 and screwed. As a result, the landing board 3 is integrally connected to the beam 1B. The outer diameter D3 of the bolt 13 is set to a value sufficiently smaller than the inner diameter D1 of the large diameter hole 9 as well as the inner diameter D4 of the resin sleeve 10. As a specific example, the inner diameter D1 of the large diameter hole 9 =
40 mmφ, the outer diameter D2 of the washer 12 = 50 mmφ, the inner diameter D4 of the resin sleeve 10 = 35 mmφ, and the outer diameter D3 of the bolt 13 = 20 mmφ.

Thus, the beam 13 of the wall post 1 and the landing board 3 can be integrally connected by inserting the bolt 13 and screwing the male screw portion 13A to the female screw fitting 8. Therefore, even the landing board 3 on the opposite side of the building can be supported by a sufficient supporting force. Further, the bolt 13 having the outer diameter D3 which is sufficiently smaller than the inner diameter D1 is inserted into the large diameter hole 9 having the large inner diameter D1, and the male screw portion 13A is screwed to the female screw fitting 8. , The inner diameter D1 of the large diameter hole 9 and the outer diameter D3 of the sufficiently small bolt 13
The difference between the beam material 1B and the landing plate 3 can be absorbed by the difference between

As shown in FIG. 6, a plurality of bolts 16 (however, only one bolt 16 is shown in FIG. 6) are protruded upward in advance in the width direction of the end portion of the landing board 3. A steel frame (angle) 14 projecting in the widthwise direction of the end of the step plate 2 is placed on the steel frame (angle) 15 arranged at, and a plurality of through holes 14A formed in the steel frame 14 at this time (however, (Only one through hole 14A is shown in FIG. 6)
Insert the bolt 16 into the
The landing plate 3 and the step plate 2 are integrally connected by screwing the nut 17 onto the portion projecting upward of. Further, grouting may be performed by injecting a grouting material such as mortar into the space between the resin sleeve 10 and the bolt 13.

[0021]

As described above, according to the first aspect of the invention, the difference between the inner diameter of the large diameter hole formed through the wall column and the outer diameter of the sufficiently small bolt causes the wall Since an error in manufacturing or assembling the column and the step plate can be absorbed, the wall column and the step plate can be easily integrally connected, and the construction efficiency of the assembly staircase can be improved. Also, in the invention according to claim 2, even in the landing board on the opposite side of the building, the landing board is supported by the beam material of the wall board, and the landing board is supported by the beam material by screwing the bolt to the female screw fitting. It can be firmly and integrally connected in the state. Also, due to the difference between the inner diameter of the large diameter hole formed through the landing plate and the outer diameter of the sufficiently small bolt, it is possible to absorb errors in manufacturing or assembling the beam and the landing plate. As a result, the beam member and the landing plate can be easily integrally connected, and the construction efficiency of the assembly stairs can be improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing an essential part of the invention according to claim 1 in an exploded manner.

FIG. 2 is a vertical cross-sectional side view showing a front stage state in which a wall pillar and a step plate are integrally coupled.

FIG. 3 is a vertical cross-sectional side view showing an integrally connected state of a wall post and a step plate.

FIG. 4 is a plan view showing the invention according to claim 2;

FIG. 5 is an enlarged sectional view taken along line AA of FIG. 4;

FIG. 6 is an enlarged sectional view taken along line BB of FIG. 4;

FIG. 7 is an exploded perspective view of an assembly staircase.

FIG. 8 is a perspective view of an assembly staircase.

FIG. 9 is a vertical cross-sectional view showing a conventional integrally connected state of a wall pillar and a step plate.

FIG. 10 is a front view showing a front stage state of joining the wall pillar and the landing board.

11 is a plan view of FIG.

[Explanation of symbols]

 1 Wall pillar 1B Beam material 1a Wall plate 2 Step board 3 Landing board 3A Landing board engaging side surface 4 Step 4A Step side 8 Female thread fitting 9 Large diameter hole 13 Bolt D1 Large diameter inner diameter D3 Bolt outer diameter

Claims (2)

[Claims] 1. A step plate is alternately attached to both side surfaces of a wall column formed by joining wall plates in a vertical direction, the steps being changed in direction.
In the assembly staircase in which the upper step part of one step plate and the lower step part of the other step plate are joined by landing boards attached to both ends of the short side of the wall column, a female screw opening to the side surface of the step on the step plate A metal fitting is embedded and a large diameter hole is formed penetrating the wall pillar in the thickness direction, and an outer diameter sufficiently smaller than the inner diameter of the large diameter hole inserted from the wall pillar side into the large diameter hole. An assembled staircase characterized in that a wall post and a step plate are integrally connected by screwing a bolt having the same to the female screw fitting. 2. A step plate is alternately mounted on both side surfaces of a wall pillar formed by joining wall plates in a vertical direction, the step plates changing directions.
In an assembly staircase in which the upper step of one step plate and the lower step of the other step plate are joined by landing boards attached to both ends of the short side of the wall pillar, the beam material that supports the landing board is attached to the wall board. A female screw fitting that is integrally formed and is open to the support surface of the landing plate is embedded in this beam, and a large diameter hole is formed through the landing plate in the thickness direction, and a large diameter hole is formed from the landing side. A wall column and a landing plate are integrally connected to each other by screwing a bolt having an outer diameter sufficiently smaller than the inner diameter of the large-diameter hole inserted into the female threaded member to the wall pillar and the landing plate.