KR200395552Y1 - Steel-frame stair structure - Google Patents

Abstract

The steel staircase structure and construction method according to the present invention, a steel stair frame, which is pre-assembled steel pillars and steel staircase, etc. are first installed, and then the mold work is performed around the steel stair frame, and then concrete is poured into vertical walls and Since the construction of slabs, etc., the structural strength of the steel staircase structure can be greatly improved, and the work process can be simplified to shorten the air and reduce the construction cost. It works.

Description

Steel-frame stair structure}

The present invention relates to a steel staircase structure of a reinforced concrete building, in particular, a steel staircase that can simplify the process by using a steel staircase assembly in which steel staircases are assembled on steel pillars, reduce air, and reduce safety and construction costs during construction. It relates to a structure and a construction method.

Generally, a steel staircase structure installed in a reinforced concrete building includes a vertical wall forming a vertical passage of a staircase, a slab alternately installed at regular intervals up and down, and a steel staircase installed by connecting the slab and the slab. Is done.

In order to construct such a steel staircase, first, in order to form a vertical wall of the staircase, reinforcing bars and formwork are formed, and the upper and lower slab formwork are also configured to form a slab connected to the vertical wall.

The upper and lower slab formwork is assembled with an embedded angle for assembling a steel staircase, and a steel staircase is temporarily installed at the embedded angle.

As such, when the steel staircase is installed, concrete is poured to form the walls of the staircase and the slab, and when the poured concrete is cured and dried, the formwork is removed to form the staircase.

However, the conventional steel staircase structure and construction method as described above, since the reinforcement and formwork installation work for forming vertical walls and slabs, etc. before the steel staircase is installed, a separate temporary staircase or There is a problem to install the structure.

In addition, each steel staircase should be installed in a state where reinforcing bars and formwork are installed. Therefore, installation of each steel staircase is difficult, and concrete pouring work for forming vertical walls and slabs in the form of prefabricated formwork and steel staircases. As this progresses, there is also a problem that the working copper is unstable and the safety falls.

In addition, the construction work is complicated because the construction work proceeds in the order of temporary structure installation, reinforcement and formwork for each worker's movement, construction of each steel staircase, concrete placement and curing for vertical wall and slab formation. There is also a costly problem.

In particular, the above-described prior art is to install a steel staircase made of a constant frame after forming concrete structures such as vertical walls and slabs, even if the concrete structure is installed to the exact value, most of the steel stairs and pre-made steel stairs As a result of such an error, not only does it make the installation of steel stairs difficult, but also requires additional finishing work to eliminate construction errors. There is a problem that persists.

The present invention was devised in order to solve the above problems, and first installed a steel stair frame in which steel pillars and steel stairs are pre-assembled, and then vertical walls and slabs with the steel plates and side plates of steel stairs being embedded. By constructing a concrete structure such as to have an SRC structure, to improve the structural strength of the entire staircase, and to simplify the work process to provide a steel staircase structure and construction method that can shorten the air and reduce the construction cost There is a purpose.

In addition, the present invention has another object to provide a steel staircase structure and construction method that can prevent the safety accidents of workers occurring during construction by securing a working copper wire for concrete installation work, such as steel staircase is installed first.

In addition, the present invention is to provide a steel staircase structure and construction method that can be easily made by connecting the steel staircase frame construction by easily configured to assemble the steel stair frame additionally installed on the already installed steel stair frame. There is this.

Steel frame staircase structure according to the present invention for realizing the above object, a plurality of steel pillars vertically erected; A plurality of embedded angles connected horizontally between the steel pillars at predetermined heights; It characterized in that it comprises a steel staircase connected in a zigzag manner to the embedded angle of the upper side and the lower side.

The steel pillars, embedded angles, steel stairs are assembled to form a first steel stair frame.

On the upper side of the first steel stair frame, the steel pillars of the first and second steel stair frame are provided with flange parts to be assembled to each other so that the steel frame, the embedded angle, the second steel stair frame with the steel staircase assembled together. .

The embedded angles of the first and second steel frame frames are configured to be coupled to each other in a male and female manner so as to assemble the second steel frame frame further to the upper side of the first steel frame frame.

The embedded angle of the first steel frame has a groove structure with an open upper portion, the embedded angle of the second steel frame has a square pipe structure inserted into the embedded angle.

The second steel stair frame is an embedded angle that is assembled to the first steel stair frame is connected to the steel pillars through a connecting bracket at a lower position away from the bottom of their own steel pillars by a predetermined distance, the first steel stair stairs The frame is installed at a lower position away from the top of the steel frame of the embedded angle is assembled to the second steel frame frame.

The steel staircase is provided with a formwork assembly plate on its side.

In addition, the steel stair construction method according to the present invention for realizing the above object, the first frame installation step of placing and fixing the first steel stair frame in which the steel staircase is assembled to the vertical steel frame pillar in the stair installation space; ; A first staircase construction step of constructing a vertical wall of the staircase and a slab on the first steel staircase frame; A second frame installation step of assembling the steel frame stairs and the steel frame pillars assembled with the second steel frame stairs on the upper part of the first steel frame frame when the step is completed; And a second staircase construction step of constructing vertical walls and slabs in the second steel stair frame in the same manner as the first staircase construction step.

In the first frame installation step, the steel column of the first steel frame stair frame is assembled and fixed to the anchor bolt installed on the floor slab.

The first steel stair frame of the first frame installation step is configured so that the steel staircase starts from a lower than the predetermined height from the bottom of the steel pillar, and before the first staircase construction step of the staircase in the lower space of the steel staircase Lower staircase construction steps for construction of vertical walls, slabs and stairs.

The vertical walls, slabs, and stairs of the lower staircase construction step are constructed with reinforced concrete structures.

The vertical walls and the slabs of the first and second staircase construction steps are constructed with reinforced concrete structures.

In the first and second staircase construction step, the side plates of the steel column and steel staircase is constructed in a structure that is embedded in the reinforced concrete structure.

In the step of installing the second frame, the second steel frame has been assembled to the first frame of steel frame using a fastening member.

The steel stair construction method is constructed in such a way that the second frame installation step and the second staircase construction step are repeatedly repeated according to the height of the stairs.

Hereinafter, a preferred embodiment of the present invention with reference to the accompanying drawings as follows.

1 is a side structural view showing the steel structure construction step according to the present invention, Figure 2 to Figure 7 is a flow chart showing the steel structure construction method according to the present invention, Figure 8 is a first steel stair frame in the present invention The assembly structure of the embedded angle of the second steel frame frame is shown in detail, Figure 9 and Figure 10 is a side view and a front view of the main portion of the formwork assembly plate is installed on the side plate of the steel stairs in the present invention.

As shown therein, the steel staircase structure according to the present invention includes four steel pillars 11 vertically erected to have a square structure, and a plurality of embedded angles horizontally connected at predetermined heights between the steel pillars 11. 13) and a steel staircase 15 connected to the upper and lower embedded angles 13 in a zigzag manner.

Here, the steel frame pillar 11 may be made of H-shaped steel, etc., and flange portions 11a and 11b are provided at upper and lower sides thereof so as to be assembled with other steel pillars 11 or structures.

The embedded angle 13 is installed at the part where the slab 17 of the staircase is located, and is provided with the share connector 13a which is coupled when the concrete is poured to form the slab 17.

The steel staircase 15 is composed of a step plate 51a and a side plate 15b, and the upper end and the lower end thereof are fixed to the embedded angle 13 by a fastening member or a welding method.

Such steel frame pillars 11, embedded angle 13, steel stairs (15) are assembled to form a first steel frame frame 10.

Referring to FIG. 2, the first steel frame frame 10 includes four steel pillars 11, four embedded angles 13 on each side, and two embedded angles 13 on both sides. The structure of the three steel staircases 15 to be connected is exemplified, the height of the steel pillars 11 and the number of embedded angles 13 and steel staircases 15 vary depending on the implementation conditions. Of course it can be used.

As described above, the second steel stair frame 20 is connected to and installed on the upper portion of the first steel stair frame 10, and the second steel stair frame 20 refers to a first steel stair frame. As in (10), the steel frame column 21, the embedded angle 23, and the steel frame stairs 25 are assembled to each other.

Here, the assembly structure for assembling the first steel frame stairs 10 and the second steel frame stairs 20, the steel pillars of the first steel frame frame 10 and the second steel frame frame 20 (11) and (21) are provided with flange portions (11a, 11b) (21a, 21b), respectively, so that they can be assembled together using fastening means such as bolts.

In addition, the embedded angles 13A and 23A of the first steel frame frame 10 and the second steel frame frame 20 are configured to be coupled to each other in a male and female manner, as shown in FIG. The embedded angle 13A of the first steel frame frame 10 is formed in a groove structure with an open upper portion, and the embedded angle 23A of the second steel frame frame 20 is inserted into the embedded angle 13A. It is formed into a pipe structure.

Here, the embedded angle 23A of the second steel-framed frame 20 assembled to the first steel-framed frame 10 is connected to the bracket 24 at a lower position away from the lower end of the steel frame pillar 21. It is connected to the steel pillars 21 through the installation.

And the embedded angle (13A) of the first steel stair frame 10, which is assembled to the second steel stair frame (20) is installed at a lower position away from the upper end of its own steel pillar (11).

In the present exemplary embodiment, the structure in which the embedded angle 23A of the second steel stair frame 20 and the embedded angle 13A of the first steel stair frame 10 are coupled to the lower side has been described as an example, but is not limited thereto. Of course, it is also possible to be configured to be located on the upper side as opposed to the above, or to change the height setting.

The remaining embedded angles 13 and 23 except for the embedded angles 13A and 23A assembled as described above may be applied in various configurations such as square pipes, L-type angles, and H-type angles according to design conditions.

On the other hand, the steel frame stairs (15, 25) of the first steel frame frame 10 and the second steel frame frame 20, the formwork 30 to form a vertical wall of the staircase as shown in Figs. ), Form plates 32 and 35 are provided on the side plate 15b. That is, in the present invention, the first steel stair frame 10 and the second steel stair frame 20 including the steel stairs 15 and 25 are first installed, and the vertical walls 16 and 26 of the staircase are reinforced. Since the construction is made of concrete, the side plate 15b is provided with formwork assembly plates 32 and 35 to easily install the formwork 30 used for vertical wall construction.

The formwork assembly plates 32 and 35 are installed to extend in the vertical direction on the upper and lower portions of the side plate 15b of the steel staircase 15, and holes are formed at regular intervals to facilitate assembling the formwork.

On the other hand, the side plates 15b of the steel stairs 15 and 25 are buried in the vertical walls when the vertical walls 16 and 26 are constructed, as shown in FIG. 10, on the upper and lower sides thereof. The part 15c is connected and formed. Such a buried portion 15c serves to reinforce the torsional rigidity of the steel stairs and to increase the bonding strength between the steel stairs and the vertical wall.

Referring to the steel staircase construction method and action according to the present invention configured as described above are as follows.

Steel stair construction method according to the present invention will be described with reference to FIGS. For reference, in the present embodiment, the stairs of the first floor are constructed of reinforced concrete tanks, and the second floor will be described by illustrating a method of constructing the steel stairs (15) tanks.

 2 is a state in which the first steel stair frame 10 is installed on the floor slab 1, Figure 3 is a state in which reinforced concrete stairs are installed on the floor slab 1, Figure 4 is a first steel stair frame ( 10 is a state in which the vertical wall 16 and the slab 17 are constructed, FIG. 5 is a state diagram before the second steel frame frame 20 is assembled to the first steel frame frame 10, and FIG. FIG. 7 is a view illustrating a state in which the second steel stair frame 20 is assembled to the first steel frame frame 10, and FIG. 7 shows vertical walls 16, 26 and slabs 17 and 27 to the second steel frame frame 20. Is a state diagram of construction.

First, as shown in FIG. 2, the first steel frame stairs 10 are disposed and fixed on the floor slab 1 constituting the stair installation space.

Here, anchor bolts 3 are embedded in the floor slab 1 as shown in FIG. 1 so that the first steel frame frame 10 may be assembled when concrete is poured.

Therefore, when installing the first steel frame staircase frame 10 to the bottom slab 17, the flange portion 11a provided at the lower end of the steel column (11) to the anchor bolt (3), and fastened with a nut (5) To assemble.

Next, as shown in FIG. 3, the first steel frame stair frame 10 has the steel frame stairs 15 starting at a predetermined height or more from the bottom of the steel frame pillars 11, and thus, the lower side of the steel frame stairs 15. In the drawing of space part, the vertical wall 6, the slab 7, and the staircase 8 of the 1st floor staircase are constructed.

At this time, the vertical wall (6), slab (7), the staircase (8) is preferably constructed of reinforced concrete tubing is generally implemented.

Next, as illustrated in FIG. 4, vertical walls 16 and slabs 17 of the second-floor staircase are constructed around the first steel frame stairs 10 on the reinforced concrete tank of the first-floor staircase.

In this case, the vertical wall 16 and the slab 17 are constructed of reinforced concrete, but the embedded angle 13 of the first steel frame frame 10 and the side plate 15b of the steel stairs 15 are embedded. Construct with.

In this case, since the first steel frame frame 10 is already installed, when the vertical wall 16 and the slab 17 are constructed using the steel frame stairs 15, a separate temporary stairs, etc. are not installed. It is possible to easily perform the formwork and reinforcement work even if not.

Next, as shown in Figures 5 and 6 when the construction of the first floor staircase is completed, the second steel frame stair frame 20 is assembled to the upper portion of the first steel frame frame 10.

At this time, the second steel stair frame 20 is lifted by a crane or the like and positioned on the upper portion of the first steel stair frame 10, and the flanges 11b and 21a of the upper and lower steel pillars 11 and 21 are moved. It is assembled using fastening members such as bolts and nuts in a state of facing each other.

Here, the upper embedded angle 13A of the first steel-frame frame 10 is formed in a groove structure, and the lower embedded angle 23A of the second steel-frame frame 20 is formed in an angular pipe structure. The upper embedded angle 23A is inserted into the lower embedded angle 13A and assembled into a structure when the stair frame 10 and the second steel frame frame 20 are assembled.

Next, as shown in FIG. 7, a vertical wall 26 and a slab 27 of a three-story staircase are constructed around the first steel frame frame 10 and the second steel frame frame 20. At this time, the construction of the vertical wall 16 and the slab 17 of the two-story staircase is performed in the same manner.

Here, as described above, the vertical walls 16 and 26 and the slabs 17 and 27 of the staircases of the second and third floors are centered on the first steel frame stairs 10 and the second steel frame frames 20. At the time of construction, formwork and reinforcement work are performed in the state where the steel stairs (15) and (25) are already installed so that vertical walls (16) and (26) and slabs (17) and (27) are constructed. Reinforced concrete construction work in the staircase can be safely and easily performed without a temporary staircase.

Particularly, in the state where the first steel frame stairs 10 and the second steel frame frames 20 are installed, concrete structures such as vertical walls 16 and 26 and slabs 17 and 27 can be constructed. Therefore, the concrete structure is integrated in the frame structure to improve the structural strength, and the gap between the steel stairs and the vertical wall, the steel stairs and the slab does not occur, so the construction error is more accurate and precise construction. It becomes possible, thus eliminating the need for additional maintenance work.

On the other hand, in the above described the structure in which the second steel stair frame 20 is connected to the upper portion of the first steel stair frame 10 is installed, the third, fourth steel stair frame in accordance with the conditions as described above By continuously installing the steel stairs (15) can be constructed higher.

Steel structure staircase structure and construction method according to the present invention configured and acted as described above, first install the steel frame stairway frame is pre-assembled, such as steel pillars and steel stairs, the steel plate, side plate of the steel stairs, embedded angle, etc. Since concrete structures such as vertical walls and slabs are embedded to be embedded, the structural strength of the entire staircase can be greatly improved by the SRC construction structure, and the work process can be simplified to shorten the air and reduce construction costs.

In addition, the present design does not produce construction errors such as clearance between the steel stairs and the vertical wall or the steel stairs and the slab because the concrete structure is constructed in the state that the steel stair frame is pre-installed, and thus more accurate and precise construction is possible. Since there is no need for additional maintenance work, there is an advantage that can reduce the construction cost.

In addition, the present invention is a steel staircase is installed first, since the steel staircase secures a working copper wire to perform concrete pouring work for vertical walls and slab formation, it can be quickly constructed without a separate construction step, especially construction There is an advantage that can prevent the safety accident of the workers occurring during the.

In addition, the present invention is configured to be easily assembled by assembling the steel stair frame additionally installed on the already installed steel stair frame, as well as to quickly install the steel stairs can be installed as well as easy to install the steel staircase of high buildings There is an advantage that can be constructed.

1 is a side structural view showing a steel structure construction structure according to the present invention,

2 to 7 is a flow chart illustrating a steel staircase construction method according to the present invention,

2 is a state in which the first steel stair frame is installed on the floor slab,

3 is a state in which reinforced concrete stairs are installed on the floor slab upper part,

4 is a state in which vertical walls and slabs are constructed in the first steel frame;

5 is a state diagram before the second steel stair frame is assembled to the first steel frame;

6 is a state in which the second steel stair frame is assembled to the first steel frame;

7 is a state in which vertical walls and slabs are constructed in the second steel frame;

8 is a detailed view showing the assembly structure of the embedded angle of the first steel frame frame and the second steel frame frame in the present invention,

9 is a side view of the main part of the formwork assembly plate is installed on the side plate of the steel staircase in the present invention,

FIG. 10 is a front view of an essential part of a form-assembly plate installed on a side plate of a steel staircase viewed from the direction "A" in FIG. 9.

<Explanation of symbols for the main parts of the drawings>

1: floor slab 6: vertical wall

7: slab 10: first steel frame stairs

11: steel column 11a, 11b: flange portion

13: embedded angle 15: steel staircase

16: vertical wall 17: slab

20: second steel stair frame 21: steel pillar

21a, 21b: flange 23: embedded angle

24: connection bracket 25: steel staircase

26 vertical wall 27 slab

30: formwork 32, 35: formwork assembly plate

Claims (5)

A plurality of steel pillars vertically erected, a plurality of embedded angles connected horizontally between the steel pillars at predetermined heights, and steel staircases connected in a zigzag manner to the upper and lower embedded angles, the first assembled steel frames Consisting of a stair frame and a second steel stair frame; Steel structure staircase structure, characterized in that the second steel frame structure is assembled on the upper side of the first steel frame frame. The method according to claim 1, Steel frame staircase structure, characterized in that the embedded angle of the first and second steel frame frame is coupled to each other in a male and female manner so as to assemble the second steel frame frame in addition to the upper side of the first steel frame frame. The method according to claim 2, The embedded angle of the first steel frame stair frame is formed in a groove structure having an open top, the steel frame staircase structure, characterized in that the embedded angle of the second steel frame frame is formed of an angular pipe inserted into the embedded angle. The method according to claim 2, The second steel stair frame is installed by being connected to the steel pillars through a connecting bracket at a lower position away from the lower end of their steel pillars embedded angle is assembled to the first steel stair frame, The first steel frame has a steel frame structure, characterized in that the embedded angle is assembled to the second steel frame frame is installed at a lower position away from the top of the steel frame pillar. The method according to any one of claims 1 to 4, The steel stair step is a steel staircase structure, characterized in that the formwork plate is provided on its side.