KR100683506B1 - Stair assembly and construction method - Google Patents

Abstract

Disclosed is a staircase assembly that can be assembled on site. Such a staircase assembly includes a lower landing anchor installed on the lower layer, an upper landing anchor installed on the upper layer, an inner and outer frame connecting the upper layer and the lower layer to each other by being assembled to the upper and lower landing anchors, respectively, and the inner and outer sides. It includes a plurality of steps assembled inside the frame to form a staircase. The stair assembly and construction method is easy to construction because it can be assembled by direct assembly of the stairs parts in the field.

Stairs, Assembly, On-Site, Frame, Hoist, Chain Block, Anchor

Description

Stair assembly and construction method {STAIRWAY ASSEMBLY AND INSTALLING METHOD OF THE SAME}

1 is a perspective view showing a stair assembly according to a preferred embodiment of the present invention.

FIG. 2 is a side view showing the internal structure of the staircase assembly shown in FIG.

Fig. 3 (a) is a plan view of the lower or upper landing anchor shown in Fig. 2, Fig. 3 (b) is a front view, and Fig. 3 (c) is a side view.

FIG. 4 (a) is a plan view of a lower or upper landing anchor acting as an anchor bar with the bolt shown in FIG. 2, FIG. 4 (b) is a front view, and FIG. 4 (c) is a side view. 4 (d) is a side view.

Figure 5 (a) is a plan view of the lower or upper landing anchor acting as an anchor bar by inserting the reinforcing bar shown in Figure 2, Figure 5 (b) is a front view, Figure 5 (c) is a side view 5 (d) is a side view.

FIG. 6 is a partially enlarged view of a portion “A” shown in FIG. 2.

Fig. 7 (a) is a front view of the inner or outer frame, and Fig. 7 (b) is a sectional view.

8 is a horizontal sectional view showing a state in which an inner frame is coupled to a landing anchor.

Fig. 9A is a plan view of the first hardware member shown in Fig. 8, Fig. 9B is a front view, and Fig. 9C is a side view.

Fig. 10 (a) is a plan view of the second hardware member shown in Fig. 8, Fig. 10 (b) is a front view, and Fig. 10 (c) is a side view.

Fig. 11A is a plan view of the third hardware member shown in Fig. 8, Fig. 11B is a front view, and Fig. 11C is a side view.

Fig. 12A is a plan view of the fourth hardware member shown in Fig. 8, Fig. 12B is a front view, and Fig. 12C is a side view.

FIG. 13 is a view showing a process of assembling the stairs of the stairs assembly shown in FIG.

14 is a side view showing one embodiment of the stairs shown in FIG.

15 (a) is a front view of the stairs shown in FIG. 14, and FIG. 15 (b) is a front view showing another embodiment of the stairs shown in FIG.

Fig. 16 (a) is a side view showing another embodiment of the stairs shown in Fig. 14, Fig. 16 (b) is a side view showing another embodiment of the stairs, and Fig. 16 (c) is another embodiment. It is a side view which shows.

Fig. 17 (a) is a side view showing a state in which a plurality of stepping steps are assembled in the inner frame shown in Fig. 13, and Fig. 17 (b) shows that the stepping step shown in Fig. 17 (a) is fastened by bolts. It is sectional drawing which shows a state.

Fig. 18 (a) is a side view showing a state in which a step step is assembled to the outer frame shown in Fig. 13, and Fig. 18 (b) shows a state in which the step step shown in Fig. 18 (a) is fastened by bolts. It is sectional drawing.

19 is a side view illustrating that a handrail is installed in a staircase assembly according to a preferred embodiment of the present invention.

20 is a front view of FIG.

FIG. 21 is a partially enlarged view of “B” of FIG. 20.

Fig. 22 is a partially enlarged view showing that the support is assembled to the landing anchor.

23 is a perspective view illustrating the construction of a staircase assembly according to a preferred embodiment of the present invention.

FIG. 24 is a view showing a process of constructing the staircase assembly shown in FIG. 23. FIG.

FIG. 25 is a partially enlarged view showing on an enlarged scale the lifting means shown in FIG. 24; FIG.

Figure 26 is a side view of Figure 25;

FIG. 27 is an enlarged perspective view of the support shown in FIG.

The present invention relates to a staircase assembly and a method for constructing the staircase assembly, and more particularly, to a step assembly and a method for constructing a staircase assembly that can be assembled by direct construction of a stairway part without a separate lifting equipment in the field. will be.

Generally, stairs are building structures that are made to go up and down, and the forms include straight stairs, fracture stairs, hollow stairs, circular stairs, and spiral stairs.

These staircases are assembled in the factory with steel frame and P.C and manufactured in a completed form, then transported to the site and lifted as separate equipment to install the stairs.

However, such a stair construction method has a difficult installation in the field without equipment. In addition, when building a new building, the stairs were inclined according to the floor height, making construction difficult and improving quality.

As a solution to this, P.C and steel staircases appeared, but P.C and steel staircases are heavy structures and have good quality, but lifting equipment is indispensable. Therefore, there is a problem that can not be applied at the site without the lifting equipment.

In addition, the construction work of the reinforced concrete stairs has a problem in that the construction process is complicated because it goes through five processes such as formwork assembly, reinforcement, concrete placement, concrete curing, and formwork dismantling.

Therefore, the object of the present invention is devised to solve the above-mentioned problems, the object of the present invention can be easily installed at the level of general skilled workers, not skilled workers without lifting equipment regardless of the installation of equipment. The present invention provides a stair assembly and a method of constructing the stair assembly.

In addition, another object of the present invention can be installed by using the lifting equipment by sequentially assembling the parts in the lower part of the site in the lifting equipment, the parts are assembled sequentially by the personnel even in the site without a separate lifting equipment Therefore, the present invention provides a stair assembly and a method of constructing the stair assembly, which can be freely constructed in all construction sites by completing the stair assembly.

Another object of the present invention is to provide a stair assembly and a method of constructing the stair assembly, which can shorten the process by reducing the process of several steps performed when constructing reinforced concrete stairs into one process.

In order to realize the object of the present invention, a preferred embodiment of the present invention comprises the steps of installing a lower landing anchor on the lower layer, and assembling at least one hardware member to the lower landing anchor; Assembling the staircase assembly by first assembling some of the stepping steps in the inner and outer frame and fixing the upper landing anchor and the hardware member to the upper end; Installing lifting means supported on the lower layer and the lower layer than the lower layer, respectively, and lifting the staircase assembly using the lifting means; Supporting the stair assembly by connecting the lower end of the lifted assembly to the hardware member of the lower landing anchor and supporting the upper landing anchor fixed to the upper end by at least one support; And it provides a step assembly construction method comprising the step of installing the remaining plurality of steps in the step assembly.

In addition, in order to achieve another object of the present invention, the present invention is a lower landing anchor installed in the lower layer; An upper landing anchor installed on the upper layer; Inner and outer frames connecting the upper and lower layers to each other by being assembled to the upper and lower landing anchors, respectively; And it provides a step assembly comprising a plurality of steps to be assembled inside the inner and outer frame to form a step.

Hereinafter, with reference to the accompanying drawings will be described in detail the structure of the staircase assembly according to an embodiment of the present invention.

1 and 2, the staircase assembly 1 proposed by the present invention includes a lower landing anchor 4 installed on the lower layer F1 and an upper landing installed on the upper layer F2. An upper landing anchor 6, inner and outer frames 5 and 7 connected to the upper and lower landing anchors 4 and 6 by assembly, respectively, and the inner and outer frames 5, It includes a plurality of steps (9) provided in the interior of 7) to form a staircase.

In the staircase assembly (1,3) having such a structure, the lower landing anchor (4) is installed in the concrete poured in the lower layer (F1), preferably three layers to support the lower portion of the staircase assembly (1) .

The lower landing anchor 4 includes a housing 11 having an "a" shape, as shown in FIGS. 2, 3 (a), (b), (c), and 6, and A stud 17 protruding to the rear of the housing 11 and embedded in concrete, and an insertion tube 13 attached to the housing 11 and into which the support pin 83 (Fig. 22) is inserted.

In more detail, the housing 11 has a "a" shape by being composed of a horizontal portion 14 and a vertical portion 12. In addition, the rear surface of the vertical portion 12, the stud 17 is projected to the rear to be embedded in the concrete so that the lower landing anchor 4 can be fixed to the concrete. At least one such stud 17 is preferably provided.

Although the above description is limited to the stud 17, the present invention is not limited thereto, and an appropriate anchor member 17a, 44a as shown in Figs. As shown in a) to (d) of FIG. 5 (d), through-holes through which the reinforcing bar 17b of concrete can be inserted may be formed in the vertical part 12 to be connected by inserting the site reinforcing bar 17b. Of course.

A plurality of through holes 15 are formed in the vertical portion 12, and the hardware member 30 is assembled to the through holes 15. The lower and lower ends 19 of the inner and outer frames 5 and 7 may be integrally assembled by the hardware member 30.

That is, the hardware member 30 is a horizontal member 31 is attached to the front of the lower landing anchor 4, as shown in Figure 8, 9 (a), (b), (c), It is provided integrally with the horizontal member 31 is composed of a vertical member 32 to which the lower ends of the inner and outer frames 5 and 7 are connected.

In addition, a long hole 38 is formed in the horizontal member 31, and a coupling hole 39 is formed in the vertical member 32.

Therefore, by inserting a bolt (M12; 44) in the horizontal member 31 of the hardware member 30 by fastening the first hole washer 35 to the through-hole 15 formed in the lower landing anchor (4) The member 30 can be assembled to the lower landing anchor 4.

Again, referring to FIGS. 3A, 3B, and 3C, an insertion tube 13 is attached to the upper surface of the horizontal portion 14 of the lower landing anchor 4 to protrude upward. A support pin 83 (Fig. 22) is inserted into the insertion tube 13 as described later. And, the insertion tube 13 is preferably provided with four.

Therefore, four supports may be installed in the lower landing anchor 4, respectively.

On the other hand, the lower landing anchor 4, as described above, the lower end of the inner and outer frame 5 is connected to constitute the inner and outer of the stair assembly (1, 3).

The inner frame 7 has a lower plate 23 connected to the lower landing anchor 4 at one end 19, as shown in FIGS. 7A, 8B and 8. Is provided, the other end 21 is provided with an upper plate (Upper plate; 27) connected to the upper landing anchor (6).

A lower through hole 25 is formed in the lower plate 23, and the lower through hole 25 corresponds to the coupling hole 39 formed in the vertical member 32 of the hardware member 30.

Accordingly, the bolt 46 (M20) is inserted into the second washer 33 through the fourth washer 36 to which the concrete stopper is attached, the lower through hole 25 and the coupling hole 39. The inner frame 7 may be integrally coupled to the lower landing anchor 4.

In addition, the upper through hole 29 is also formed in the upper plate 27 formed on the upper end 21 of the lower landing anchor (4). In addition, in the upper through hole 29, the inner frame 7 may be integrally coupled to the upper landing anchor 6 by a bolting method similarly to the lower through hole 25.

In the case of the outer frame 5 as well, since the inner frame 7 is the same in shape and the fastening method is the same, a description thereof will be omitted below.

Thus, the inner and outer frames 5, 7 are thus assembled with their lower plates 23 bolted to the lower landing anchors 4 and the upper plates 27 by bolts to the upper landing anchors 6. By assembling, the lower layer F1 and the upper layer F2 can be connected.

Meanwhile, a plurality of stair steps 9 and 60 are assembled to the inner and outer frames 5 and 7, and as shown in FIGS. 13 to 15 (a) and (b), a plurality of such step steps ( 9 and 60 are composed of a horizontal plate 52 and a vertical plate 50 and a plurality of stair steps 9 and 60 have a structure that can be assembled with each other.

That is, the horizontal plate 52 has a width enough for pedestrians to step on and side plates 54 are provided at both ends thereof. A step through hole 56 is formed in the side plate 54, and the step through hole 56 corresponds to the fastening hole 18 formed in the inner and outer frames 5 and 7.

Accordingly, the plurality of stepped steps 9 and 60 are inserted into the fastening holes 18 through the step through holes 53 and 56 using bolts 64 and 65 (Figs. 17B and 18B). It can be integrally assembled to the frames 5, 7.

And, as shown in Fig. 17 (a), (b), the bolt for fixing the step step 9 and the inner frame 7 is assembled using a M12mm round head wrench bolt or a root bolt.

In addition, as shown in Figs. 14A and 14B, the outer frame 5 is assembled using M12 mm bolts.

At this time, the fastening of the outer frame 5 is to reverse the bolt 64 so that the thread of the bolt 64 is buried in the concrete retaining wall (C1) to act as an anchor bar (Anchor Bar).

Consequently, for this reason, the cross section of the outer frame 5 can be made the minimum cross section required for the construction.

Again, referring to FIGS. 13 to 15 (a) and (b), the vertical plate 50 of the stepped step 60 has a locking plate 57 bent at a predetermined angle θ2 at the upper end thereof. .

This locking plate 57 (FIG. 15A) preferably maintains an inclination of 30 degrees to 90 degrees with respect to the vertical plate 50. As shown in FIG. Therefore, the 90-degree portion serves as an evacuation passage so that air does not occupy during mortar plastering construction, and can prevent interference with the fixing plate.

In addition, as an optional method, the end of the locking plate 57; 15b also serves as an evacuation passage, and may prevent interference with the fixing plate.

In addition, the vertical plate 50 of the plurality of stair steps 9 is retracted by a predetermined angle θ1 so that the area of the scaffold is widened as it is retracted.

Since the vertical plate is retracted by a predetermined distance from the vertical line, the area of the scaffold becomes wider as it is retracted from the horizontal projection area, thereby making full use of the space.

In the case of assembling a plurality of stair step 9 having such a structure, first, assembling steps 3, 4, and 5 (59) arranged in the middle part, and then the other stair steps 9 are sequentially arranged from the bottom. Will be assembled.

Assembling steps 3, 4, and 5 first involves applying a method of assembling and lifting the stair assembly 1 and 3 from the bottom as described below, thus lifting the stair assembly 1 and 3. Steps 3, 4, and 5 are first assembled to prevent deformation of the frame by the wire 89 (Fig. 24) of the lifting device 90 (Fig. 24).

After assembling steps 9, 3, 4 and 5, the plurality of stair steps 9 are sequentially assembled from the bottom to the top.

That is, in the method of assembling the stepping step 9, as shown in Fig. 13, the stepping step 60 to be assembled is brought close to the already assembled stepping step 9, and the first bolt 55 is temporarily assembled.

In this state, the bent end 62 of the horizontal plate 61 is positioned to engage the engaging plate 57 of the assembled step step 9 by rotating the step step 60 to be assembled in the direction of the arrow.

Then, by assembling the second bolt 64, the stepping step 60 can be assembled to the other stepping step 9.

In this way, the step steps 9,60 are temporarily assembled and then the steel stairs are completed and finally the bolts are tightened.

In addition, after assembling a plurality of stair steps 9 and 60 to the inner and outer frames 5 and 7, mortar plastering is applied to a predetermined thickness (about 40 mm), and its role is to buffer shock sound. . In addition, the reason why the joint portion of the stair steps 9 and 60 is 30 degrees is that the cured mortar plaster serves as a key to obtain the effect of preventing the mortar plaster from falling off.

Meanwhile, the staircase step 9 may be manufactured in various shapes, as shown in FIGS. 16 (a), (b) and (c).

That is, as shown in Fig. 16 (a), the engaging plate 96 of the step step 9a may be bent in parallel with the vertical plate, and as shown in Fig. 12 (b), The horizontal plate end 97 may be bent, or the horizontal plate end 99 of the step 9c may be bent vertically downward as shown in Fig. 16C.

In addition, the role of the locking plate 57 (FIG. 14), 96 (FIG. 16A), and 97 (FIG. 16B) serves to reinforce the bending stress structurally by bending the non-slip portion, and the locking plate 57 (FIG. 14). Has a function to prevent dropping by acting as a key after mortar filling, and to facilitate assembly by acting as a locking step during assembly.

As described above, the stepped steps 9 having various shapes can be appropriately selected and used during construction.

On the other hand, after assembling the staircase assembly 1 as described above, the handrail assembly 70 is installed in the staircase assembly 1 for the safety of pedestrians.

19 to 21, the handrail assembly 70 includes a post 72 fixed to the inner frame 7, a frame 74 fixed to the post 72, and Arranged in the frame 74 is made of a liver 76 to prevent the pedestrians and the like fall.

The handrail assembly 70 having such a structure first fixes the lower end 73 of the post 72 to the inner frame 7 as shown in FIG. Then, the frame 74 is fixed to the post 72 by a bolting method or the like.

Therefore, the handrail assembly 70 having a relatively simple structure can be easily mounted.

On the other hand, the lifting means 90 for lifting upward the step assembly 1 assembled as described above is shown in Figs.

As shown in the drawing, the lifting means 90 has a cylindrical main body 92, a rotating body 93 provided outside the main body 92 and rotatable, and connected to the rotating body 93 for support ( 84 is respectively composed of a tripod 88 and a lifting mechanism 96 connected to the main body 93 to lift the staircase assembly 1.

In the lifting means 90 having such a structure, three supports 86 and 87 are inserted into three tripods 88, respectively.

In addition, the lifting mechanism 96 can be stably supported by rotating the three tripods 88 so that the three supports 86 and 87 maintain appropriate intervals.

At this time, the lifting mechanism 96 preferably includes a hoist, chain block, winch and the like.

Thus, a hoist, a chain block, a winch, or the like is used to lift the lifting ring downward to lift the object to be lifted, preferably the stair assembly 1, 3. In addition, the four supports inserted into each landing anchor can be fixed in position by connecting to each other by turn buckle 82 and 85.

Hereinafter, with reference to the accompanying drawings will be described in more detail the construction method of the stair assembly according to a preferred embodiment of the present invention.

As shown in Figure 1, Figure 23, Figure 24, the staircase assembly method proposed by the present invention can be installed in the number of floors above the three-layer concrete most of the construction.

The construction method of the staircase assembly (1,3) is to install the lower landing anchor (4) in the lower layer (F1), the step of assembling the staircase assembly (1,3) at the bottom surface, lifting means in each layer Installing (90) and lifting the stair assembly (1,3) using the lifting means (90), fixing the lower and upper portions of the lifted stair assembly (1,3), Installing the remaining plurality of steps 9, 60 in the staircase assembly 1, 3.

In the construction method of the staircase assembly in the process as described above, first the step of installing the lower landing anchor (6) is carried out.

In this step, the lower landing anchor 4 is nailed and fixed to the concrete formwork installed on the lower floor, that is, the third floor F1. Then, the lower landing anchor 4 is fixed to the three-layer (F1) concrete formwork, and before the concrete is poured, the hardware member 30 is assembled in advance on the front surface of the lower landing anchor 4.

In addition, the upper landing anchor (6) is installed in advance of the concrete formwork from the three-layer abnormal layer (F1, F2).

Referring to the process of assembling the hardware member 30 to the lower landing anchor 4, the horizontal member 31 of the hardware member 30 as shown in Figures 6 and 8 of the lower landing anchor 4 The long hole 38 of the horizontal member 31 corresponds to the coupling hole 15 of the lower landing anchor 4 by contacting the vertical portion 12.

In addition, the bolt member 44 may be integrally assembled to the lower landing anchor 4 by fastening the bolt 44 through the long hole 38 and the coupling hole 39 to the first washer 35.

Such hardware member 30 is preferably assembled to the lower landing anchor (4).

Two are for fixing the inner and outer frame (5, 7) to be installed on the lower layer, the other two to fix the inner and outer frame (47, 48) to be installed on the upper layer.

In this way, after the on-site concrete pouring on the third floor (F1) is completed, the step of assembling the stair assembly (1) in the bottom surface is in progress.

In this step, the upper landing anchor 6 and the inner and outer frames 5 and 7 are assembled at the bottom surface.

That is, the hardware member 30 is assembled to the upper landing anchor 6 in the same manner as the assembly process with the lower landing anchor 4.

Then, the upper through hole 29 formed in the upper end 21 of the inner frame 7 corresponds to the coupling hole 39 formed in the vertical member 32 of the hardware member 30, and using the bolt M20 Tighten.

At this time, the washers to be used at the upper end portions of the inner and outer frames 5 and 7 use the second washer 33.

Then, as shown in FIGS. 13 to 15 (a) and (b), first, some of the steps 9, 60, that is, steps 3, 4, and 5, 59 are inward and It is temporarily assembled to the outer frames 5 and 7.

As described above, the reason for temporarily assembling steps 59, 3, 4, and 5 is to prevent the deformation of the frame by the wire 89 of the lifting means 90 when lifting the stair assembly 1, 3 as described above. In order to assemble the step 59, 3, 4, 5 first.

As described above, after assembling the staircase assembly 1 from the bottom surface, the lifting means 90 is installed, and the step of lifting the staircase assembly 1 by the lifting means 90 is performed.

In this step, the stair assembly 1 is lifted using the lifting means 90 to install between the three layers F1 and the upper layer F2.

Referring to the lifting process using the lifting means 90, first, the upper ends of the three tripod supports 86 and 87 are respectively inserted into the trivet 88.

Then, the lower ends of two (87) of the three tripod support (86, 87) is placed on the first step step (S) descending from the lower third floor (F0), one of the other tripod 86 (3) It is located on the upper surface of the layer F1.

As a result, the lifting means 90 is triangular by three supports 86 and 87 to have a stable shape.

Then, the lifting mechanism 96 is properly adjusted to be positioned at the correct position, and the bolt 94 mounted on the tripod 88 is securely fixed.

In this state, the inner and outer frames 5, 7 of the stair assembly 1 assembled on the bottom by lowering the wires 89 such as the lifting block 96, the chain block, the hoist, the winch, and the like. ) With M12mm Bolt.

Then, when the lifting mechanism 96 is operated, the staircase assembly 1 is also raised by the rise of the wire 89.

When the stair assembly 1 reaches a certain height, the step of fixing the lower part and the upper part of the lifted stair assembly 1 proceeds.

In this step, the lower ends 19 of the inner and outer frames 5 and 7 are connected to the hardware member 30 of the lower landing anchor 4 pre-installed on the third floor F1.

That is, the lower through hole 25 formed in the lower end 19 of the inner frame 7 corresponds to the coupling hole 39 formed in the vertical member 32 of the hardware member 30, and using the bolt M20. Tighten.

At this time, the washer used in the lower end of the inner frame 7 uses the fourth washer 36 and the second washer 33 to which the concrete stopper is attached, and is used in the lower end of the outer frame 5. The washers all use the second washer 33.

As such, after connecting the lower end of the stair assembly 1 to the lower landing anchor 4, the upper landing anchor 6 assembled to the upper end of the stair assembly 1 is fixed to a predetermined height.

Four supports on the four support pins 83 inserted into the insertion tube 13 of the upper landing anchor 6 in order to fix the upper landing anchor 6 to a certain height, that is, the height of the upper layer F2 of the third floor. Insert each of (81).

In addition, the lower ends of the four supports 81 are nailed and fixed to the lower layer F0 of the third floor because they are constructed of reinforced concrete, which is a conventional method. Is fixed by inserting into each).

As such, the upper landing anchor 6 disposed at a predetermined position by the four supports 81 is adjusted by the support 81, and the upper portion is prevented and fixed by using the turn buckle 82 to prevent distortion. Secure the landing anchor (6) in place.

Through this process, the staircase assembly 1 may be assembled between the third layer F1 and the upper portion F2 of the third layer.

Subsequently, two tripod supports 87 are placed on the upper surface of the first stage descending from the third floor F1 to the third floor lower layer (F0) in order to install the step assembly 3 of the upper floor, and the other tripod support One (86) is moved to the newly installed upper landing anchor (6) at the height of the upper floor (F2) of the third floor to install more half-floor than the concrete placing floor.

After moving the supports 86 and 87 in this manner, a step of sequentially assembling the remaining plurality of step steps 9 and 60 of the step assembly 1 is performed.

That is, the inner frame 7 is prefabricated using M12mm round head wrench bolt or root bolt, and the outer frame 5 is preassembled using M12mm bolt and nut.

At this time, the fastening of the outer frame 5 is to reverse the bolt 64 so that the thread of the bolt 64 is buried in the concrete retaining wall (C1) to act as an anchor bar (Anchor Bar).

That is, as shown in Figs. 13 and 14, the method of assembling the step step 9 approaches the step step 9 to be assembled to the already assembled step step 9 and preassembles the first bolt 55. .

In this state, the bent end 62 of the horizontal plate 61 is positioned to engage the engaging plate 57 of the assembled step step 9 by rotating the step step 60 to be assembled in the direction of the arrow.

Then, by assembling the second bolt 64, the stepping step 60 can be safely assembled to the other stepping step 9.

In this way, the step steps 9,60 are temporarily assembled and then the steel stairs are completed and finally the bolts are tightened.

Through such a process, the staircase assembly 1 can be constructed at the height of half floor.

After the stair assembly 1 is constructed at a height of half a layer, the stair assembly 3 is further installed in the upper layer.

That is, as in the step assembly (1) installed on the bottom, by mounting the step assembly (3) and landing anchor 100 on the bottom surface, by raising the position of the lifting means 90, the support for the tripod (87) 2 The dog is placed on the upper surface of the first stage descending from the third floor (F1) to the lower floor (F0), and one support for another tripod (86) is raised from the third floor (F1) to raise the upper floor (F2) of the third floor. On the top landing anchor (6).

Then, the lifting means 90 is operated to lift the stair assembly 3 to a certain height, and connect the lower end of the stair assembly 3 to the upper landing anchor 6 located on the upper layer F2 of the third floor.

After fixing the lower end of the staircase assembly 3, the lower landing anchor provided with four supports 102 on the third floor F1 to fix the landing anchor 100 assembled at the upper end of the staircase assembly 3 to a certain position. Insert each of the four support pins (a) inserted into the insertion tube (13) of (4).

Then, after adjusting the height with the support 102, the turnbuckle 85 is fixed, the tripod is moved, and the remaining plurality of step steps 9 and 60 of the step assembly 3 are sequentially assembled.

Therefore, the step assembly 3 of the upper layer can be constructed through this process.

By repeating this process, the staircase assembly can be constructed even at higher floors.

As described above, the stair assembly and the construction method according to the preferred embodiment of the present invention have the following advantages.

First, the steel staircase can complete five processes such as formwork assembly, reinforcement, concrete placing, concrete curing, and dismantling of the formwork performed on reinforced concrete stairs. The passage can be secured safely.

Second, when steel staircase precedes, material transportation and movement to the upper part is easy, and quality and safety can be secured.

Third, assembling the handrail assembly on the inner frame after installing the steel staircase eliminates the need to install and remove the safety railing separately.

Fourth, as the troublesome part is changed to steel frame, less garbage is generated and the site can be kept clean.

Fifth, since the weight is lighter than the reinforced concrete stairs, the weight of the building is reduced, thereby reducing the cost of the structure.

Sixth, the steel staircase accessories form stairs only by bolt assembly, so skilled workers are not required, and excellent quality can be secured by inputting general skill workers, and it can be applied to sites without lifting equipment. Can be.

The present invention can be variously changed by those skilled in the art without departing from the gist of the present invention claimed in the claims is not limited to the specific preferred embodiment described above. .

Claims (15)

A lower landing anchor installed on the lower layer; An upper landing anchor installed on the upper layer; Inner and outer frames connecting the upper and lower layers to each other by being assembled to the upper and lower landing anchors, respectively; And It includes a plurality of steps that are assembled inside the inner and outer frame to form a step, The plurality of stair steps includes a horizontal plate corresponding to the fastening hole of the inner frame is formed in the step plate through holes on both sides, and a vertical plate integrally provided on the horizontal plate and a bending plate formed on the upper end thereof. According to claim 1, wherein the upper and lower landing anchor is a housing, a stud protruding to the rear of the vertical portion of the housing embedded in concrete, and bolts protruding to the rear of the vertical portion of the housing embedded in concrete And a reinforcing pipe inserted into the rear of the vertical part of the housing to be embedded in concrete, and inserted into the horizontal part of the housing to insert the support pin. The horizontal member of claim 2, wherein a hardware member is assembled to vertical parts of the upper and lower landing anchors so that the inner and outer frames are coupled, and the hardware member is attached to the front surface of the lower landing anchor and a long hole is formed. Stair assembly is provided integrally with the horizontal member consisting of a vertical member that is connected to the lower end of the inner and outer frame and the coupling hole is formed. According to claim 1 or claim 3, wherein the inner and outer frame is provided at one end connected to the lower landing anchor and the lower through hole is formed, and the other end is provided to the upper landing anchor connected to the upper landing anchor The upper plate is formed of the upper plate, the lower through hole of the lower plate is corresponding to the coupling hole formed in the vertical member of the hardware member is coupled by bolt fastening and the upper through hole of the upper plate is the upper landing anchor Stair assembly coupled to the vertical member of the hardware member assembled to. delete The bolt fixing the stair step and the inner frame is assembled using M12mm round head wrench bolts or root bolts, so that it is difficult to dismantle by external force after construction, and the outer frame is made of M12mm bolts to concrete. A staircase assembly where the threads of a bolt are buried and assembled as an anchor bar. The staircase assembly according to claim 1, wherein the vertical plate is retracted by a predetermined distance from a vertical line to retreat more than the horizontal projection area, thereby widening the area of the scaffold to maximize the space. The method of claim 1, wherein the non-slip portion of the upper end of the vertical plate is bent to structurally reinforce bending stress, to serve as a key after mortar filling, to prevent falling off, and to perform assembly as a locking step during assembly. Stair assembly with facilitation. According to claim 1, The inner and outer frame further comprises a handrail assembly for the safety of pedestrians, The handrail assembly comprises a post (Fix) fixed to the inner frame, a frame (Frame) fixed to the post, The staircase assembly is arranged on the frame consisting of a liver that prevents pedestrians and the like from falling. According to claim 1, wherein the inner and outer frame is capable of lifting upward by the lifting means, the lifting means is a cylindrical body, a rotating body provided on the outside of the main body and a support to the rotating body And a tripod inserted respectively and a lifting mechanism connected to the main body to lift the inner and outer frames. 11. The staircase assembly of claim 10 wherein the lifting mechanism optionally includes a hoist, a chainblock and a winch. Installing a lower landing anchor on the lower layer, assembling at least one hardware member to each of the lower landing anchors, and fixing the upper and lower landing anchors to the upper and lower landing anchors, respectively, by using bolts in the holes formed in the horizontal members of the hardware member; ; Assembling the staircase assembly by first assembling some of the stepping steps in the inner and outer frame and fixing the upper landing anchor and the hardware member to the upper end; Installing lifting means supported on the lower layer and the lower layer than the lower layer, respectively, and lifting the staircase assembly using the lifting means; Supporting the stair assembly by connecting the lower end of the lifted assembly to the hardware member of the lower landing anchor and supporting the upper landing anchor fixed to the upper end by at least one support; And Installing the remaining plurality of steps in the stair assembly. delete 13. The method of claim 12, wherein in assembling a plurality of stair steps in the stair assembly, the steps include: proximitying the step steps to be assembled to the assembled stair steps and preassembling the first bolts; Positioning the bent end of the horizontal plate to be caught by the engaging plate of the assembled stepping step by rotating the stepping step to be assembled in this state; And And assembling the stepping step to another stepping step by assembling the second bolt of the stepping step to be assembled to the inner and outer plates, respectively. 13. The method of claim 12, wherein the step of installing the lifting means comprises: inserting four support pins into the insertion tube formed in the lower landing anchor, and inserting the supports into the four support pins, respectively; Inserting the upper part of two supports of the four supports into the bottom of the insertion tube of the landing anchor fixed to the upper part after installing the four supports; The support is placed on the landing anchor fixed to the upper part, the upper part is inserted into the tripod of the lifting means, the other support is inserted into the tripod, and the lower part is placed on the landing anchor installed on the lower floor than the lower layer. Steps; A method of constructing a staircase assembly comprising the step of installing a citation means on top of three supports and mounting a citation mechanism.

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