KR20240048137A - High-rise building demolition method with enhanced safety - Google Patents

Abstract

The present invention relates to a high-rise building demolition method with enhanced safety. By using a method of cutting building walls and slabs into chunks and sequentially moving them to the ground, work efficiency is improved and safety accidents, noise and dust are reduced during the construction process. It has the effect of preventing civil complaints from occurring.
The present invention for realizing this includes a cutting step of sequentially cutting the wall 10 into a certain block shape using a cutter from the upper floor when demolishing a high-rise building; (ST 1) creating a hole in the cut wall 10 A hole forming step of forming (20); (ST 2) a wire connecting step of connecting the crane wire 30 to the through hole 20 of the wall 10; (ST 3) with the wire 30 A lowering step of moving the connected wall 10 down to the ground using a crane 40; (ST 4).

Description

High-rise building demolition method with enhanced safety}

The present invention relates to a high-rise building demolition method, and more specifically, to a new high-rise building demolition method that can prevent safety accidents while improving work safety during demolition work on high-rise buildings.

In general, when demolishing an old building, a lot of noise and dust are generated, which causes various civil complaints and makes the work difficult.

In particular, when demolishing a high-rise building with more than 5 floors that cannot be reached by an excavator from the ground, the demolition work is carried out sequentially with the excavator raised above the building using a crane.

However, in the case of the conventional demolition method described above, the building collapses due to the load of the excavator and the excessive load from the demolished crushed material (concrete) during the demolition process, workers fall, and human accidents occur due to flying debris during the excavator demolition. There was a problem with safety accidents occurring frequently.

Republic of Korea Patent Registration No. 1941337 (registered on January 16, 2019) Republic of Korea Patent Registration No. 2312945 (registered on October 7, 2021)

The present invention was proposed to improve the problems in the prior art described above, and provides a new method that allows demolition of high-rise buildings more efficiently without raising the excavator, thereby making work safer. The purpose is to prevent safety accidents from occurring.

The high-rise building demolition method of the present invention for achieving the above object includes a cutting step of sequentially cutting the walls and slabs into a certain block shape using a cutting machine from the upper floor when demolishing a high-rise building; A hole forming step of forming a hole in the cut wall and slab; A wire connection step of connecting a crane wire to the through-hole portion of the wall and the slab; A lowering step of lowering and moving the wall and slab connected by the wire to the ground using a crane.

This high-rise building demolition method of the present invention uses a method of cutting building walls and floor slabs into chunks and sequentially moving them to the ground without using an excavator as in the past, thereby improving work efficiency and ensuring safety during the construction process. It has the effect of preventing civil complaints due to accidents and noise and dust.

1 is a flow chart of a high-rise building demolition method according to an embodiment of the present invention.
Figure 2 is a schematic diagram of the demolition process in the present invention.
Figure 3 is a structural diagram of a cutting wall in the present invention.
Figure 4 is a diagram showing a crane wire connected to the through hole of the cutting wall in the present invention.
Figure 5 is a diagram showing a reinforcing ring assembled to a cutting wall according to another embodiment of the present invention.
Figure 6 is an enlarged view of the main part of Figure 5.
Figure 7 is a cross-sectional view of section AA of Figure 5.
Figure 8 is a structural diagram of a reinforcement ring according to another embodiment of the present invention.
Figure 9 is a diagram showing a reinforcing ring mounted on a cutting wall according to another embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be examined in detail with reference to the accompanying drawings.

Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those with average knowledge in the art.

Accordingly, the shapes of components expressed in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same configuration may be indicated by the same reference numeral in each drawing. Additionally, detailed descriptions of the functions and configurations of known technologies that are judged to unnecessarily obscure the gist of the present invention may be omitted.

First, a high-rise building demolition method with enhanced safety according to an embodiment of the present invention will be examined through FIGS. 1 to 4 as follows.

<Cutting step>(ST 1)

When demolishing a high-rise building, the wall 10 is cut into a certain block shape sequentially from the upper floors using a conventional concrete cutting machine equipped with a high-speed cutting blade.

That is, at this time, the worker uses a cutting machine to cut the concrete wall 10 into a square shape of a certain size.

In addition, during this cutting operation, the floor slab portion as well as the wall portion are cut in the same manner.

<Through hole formation stage> (ST 2)

In this way, the wall 10 and the floor slab separated from the building in a lump form by cutting are subjected to a process of forming a through hole 20 into a circular shape in the central portion using a tool such as a drill. At this time, the number and location of the through holes 20 formed may be varied.

<Wire connection step>(ST 3)

Afterwards, the work of connecting the crane wire 30 to the wall 10 and the through hole 20 of the slab is performed.

That is, at this time, the wire 30 connected to the upper end of the boom 41 of the crane 40 is connected to the through hole 20 to prepare for lifting each of the cut walls 10 and moving them to the ground. will do.

<Wall lowering stage>(ST 4)

Then, when the wire 30 connection work is completed, the operation of lifting the cutting wall 10 and the cutting slab sequentially using the crane 40 and moving them down to the ground is repeated, thereby moving them from the upper floor to the lower floor of the high-rise building. As the building moves, dismantling work can be done more quickly and safely.

In addition, since demolition work is carried out using this wall and slab cutting method, dust and noise generation can be reduced during the demolition process, and the transport and recycling efficiency of the lifted walls and slabs can also be improved.

Therefore, the high-rise building demolition method of the present invention uses a method of cutting building walls and slabs into chunks and sequentially moving them to the ground without using an excavator as in the past, thereby improving work efficiency and reducing safety accidents during the construction process. , It shows the effect of preventing civil complaints caused by noise and dust.

Meanwhile, Figures 5 to 7 show a method according to another embodiment of the present invention, and in the hole forming step (ST 2), the operation of installing a reinforcement ring 50 made of synthetic resin at the area where the through hole 20 is formed is performed. It is performed separately.

At this time, on the inner surface of the reinforcement ring 50, a plurality of wire guide grooves 51 through which the crane wire 30 can be guided are formed at regular intervals, and on the outer surface of the reinforcement ring 50, a plurality of wire guide grooves 51 are formed at regular intervals from the wall 10. It is desirable that the guide jaws 52 to prevent separation are formed in a symmetrical form on both sides.

If the reinforcement ring 50 is used at the connection part of the wire 30 in this way, direct contact between the wire 30 and the concrete wall 10 can be prevented, resulting in damage to the wall 10 during the lifting process. This can be prevented.

In particular, since a wire guide groove 51 is formed in the reinforcing ring 50, the stable position of the wire 30 can be supported during the lifting process, and a guide jaw 52 is provided on the outside to provide reinforcement. Even if the diameter of the ring 50 is different from the diameter of the through hole 20, stable support with the wall 10 is maintained and separation can be prevented.

In addition, Figures 8 and 9 show a construction method according to another embodiment of the present invention, and the reinforcement ring 50 is provided with a plurality of adjustment bolts 53 in the radial direction for close contact with the inner wall surface of the through hole 20. It is fastened with screws, and a close contact pad 54 made of an elastic material such as rubber is provided at the tip of each adjustment bolt 53 to bring the through hole 20 and the reinforcement ring 50 into close contact. At this time, the outer surface of the adhesive pad 54 was curved at a certain curvature to ensure stable close contact with the inner wall of the through hole 20.

When this configuration is achieved, in the process of mounting the reinforcement ring 50 to the through hole 20, the adjustment bolt 53 is adjusted to ensure close contact with the through hole 20, making the work easier.

In particular, since the tip of the adjustment bolt 53 is provided with a contact pad 54 whose outer surface has a curved shape, it has the advantage of maintaining stable contact with the inner wall of the through hole 20.

Although specific embodiments of the present invention have been described and shown above, it is obvious that the building demolition method of the present invention can be implemented in various modifications by those skilled in the art.

For example, in the above embodiment, the through hole formed in the wall has a circular shape and is formed in the central portion, but the shape, formation position, and number of the through hole can be changed in various ways as needed.

Accordingly, such modified embodiments should not be understood individually from the technical spirit or scope of the present invention, and such modified embodiments should be included within the scope of the appended claims of the present invention.

10: wall 20: through hole
30: wire 40: crane

Claims (5)

When demolishing a high-rise building, a cutting step of sequentially cutting the wall 10 and the slab into a block shape using a cutting machine from the upper floor; (ST 1)
A hole forming step of forming a hole 20 in the cut wall 10 and the slab; (ST 2)
A wire connection step of connecting the crane wire 30 to the wall 10 and the through hole 20 of the slab; (ST 3)
A lowering step of lifting and moving the wall 10 and the slab connected by the wire 30 to the ground using a crane 40; (ST 4)
A high-rise building demolition method with enhanced safety, comprising: In claim 1,
In the hole forming step (ST 2), the through hole 20 is formed into a circular shape, and a reinforcing ring 50 made of synthetic resin is installed in the area where the through hole 20 is formed. Safety is enhanced. High-rise building demolition method. In claim 2,
A high-rise building demolition method with enhanced safety, characterized in that a plurality of wire guide grooves (51) through which the wire (30) can be guided are formed at regular intervals on the inner surface of the reinforcing ring (50). In claim 2,
A high-rise building demolition method with enhanced safety, characterized in that guide jaws 52 are formed symmetrically on both sides of the reinforcement ring 50 to prevent separation from the wall 10. In claim 2,
A plurality of adjustment bolts 53 are screwed in the radial direction to the reinforcement ring 50 for close contact with the inner wall of the hole 20, and a close contact pad 54 is provided at the tip of each adjustment bolt 53. A high-rise building demolition method with enhanced safety, wherein the through hole 20 and the reinforcement ring 50 are brought into close contact, and the outer surface of the contact pad 54 is curved at a certain curvature.

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