KR-102961936-B1 - H-beam construction demolition methods

Abstract

A demolition method for an H-beam building is disclosed. The disclosed demolition method for an H-beam building is characterized by comprising the following steps in a demolition method for an H-beam building based on an H-beam: a) setting a predetermined demolition wall area to be demolished in an H-beam building in which columns and beams made of H-beams are connected; b) separating a beam connected to a column to be demolished in the demolition wall area; c) drilling a traction hole at the top of the column to be demolished and connecting a traction wire to the traction hole; d) cutting only a portion of the bottom of the column to be demolished; e) connecting the traction wire to heavy equipment on the ground and pulling it so that the uncut portion is bent and the building structure of the demolition wall area is toppled to the ground; and f) separating the uncut portion.

Inventors

• 김민수

Assignees

• 수성건설산업 주식회사

Dates

Publication Date

20260507

Application Date

20241203

Claims (5)

1. In the demolition method of an H-beam building based on an H-beam, a) A step of setting a predetermined demolition wall area to be demolished in an H-beam structure in which columns and beams made of H-beams are connected; b) A step of separating the beam connected to the column to be demolished in the above-mentioned demolition wall area; c) A step of drilling a towing hole at the top of the column to be removed and connecting a towing wire to the towing hole; d) A step of cutting only a portion of the lower end of the column to be demolished and leaving the remainder as an uncut section; e) a step of connecting the above-mentioned towing wire to heavy equipment on the ground and pulling it so that the above-mentioned uncut portion is bent and the building structure in the demolition wall area is toppled to the ground; and, f) a step of separating the above-mentioned uncut portion; including, Step d) above involves cutting the flange and web portions of one side of the H-beam at the bottom of the column to be demolished using a plasma cutter, while leaving the other side flange portion as an uncut section. The above step e) is characterized by softening the above-mentioned uncut portion by heating it to 450 to 1000 ℃ using a gas torch. H-beam building demolition method.
2. delete
3. In Article 1, A method for demolishing an H-beam building, characterized in that step d) above is configured to cut the lower end of the other flange only up to 30~35% in the width direction and leave 65~70% or more as an uncut portion.
4. In Article 1, A method for demolishing an H-beam building, characterized by further including the step of softening the remaining uncut portion at the bottom of the column to be demolished by heating it to 450 to 1000 ℃ using a gas torch after proceeding with the above step d).
5. In Article 1, The method further includes the step of connecting the top of the column to be demolished and the lifting line of the crane; The above step f) is characterized by being configured to prevent rapid tipping by the lifting line of a crane connected to the top of the column to be demolished during the process of pulling the traction wire with the heavy equipment to tip the demolition wall area to the ground.

Description

H-beam construction demolition methods The present invention relates to a demolition method for dismantling and removing a building, and more specifically, to an H-beam building demolition method capable of effectively and rapidly demolishing an H-beam building. Generally, construction H-beams (also known as "H-shaped steel") are steel beams primarily used in building structures. Made of high-strength steel, they offer excellent durability and are frequently used in large buildings or industrial structures. These H-beams can withstand high loads and are effective in reinforcing the seismic resistance of structures. Referring to FIG. 1, this H-beam building is a modular prefabricated structure in which columns (110) and beams (120) made of H-beams are connected vertically and horizontally in a rectangular grid to form a building structural frame, and outer walls (W) are formed by connecting outer panels (wall panels, roof panels), such as sandwich panels, to the columns (110) and beams (120). Since each member is connected by welding or bolts, it is necessary to separate the welded parts or connections when dismantling the structure, and this acts as a special consideration in the demolition method. Demolition methods for H-beam buildings include blasting and mechanical demolition using heavy equipment. The demolition method involves using explosives to detonate specific points on H-beam structures, causing the entire building to collapse sequentially all at once. It is used for the demolition of opposing structures and offers the advantage of rapid demolition; however, it causes significant vibration and shock to surrounding areas, potentially damaging nearby buildings and roads, and generates noise and dust, which can lead to serious environmental pollution issues. Consequently, it is rarely used in urban areas and is primarily employed in suburban regions where ample open space is available. Mechanical demolition using heavy equipment is a method of sequentially removing debris during the demolition process by using heavy machinery such as cranes, cutters, breakers, and hydraulic shears to cut and dismantle H-beams. However, mechanical demolition methods utilizing such heavy equipment, which primarily involve cutting H-beams into uniform sizes from the top of the building downwards and lowering them to the ground using a crane, allow for relatively safe operation while maintaining building stability. Although this method is used in urban areas or sites where safety is critical, there were problems such as delays in demolition time and increased costs due to the high working height and the need to completely cut and separate the H-beams into uniform sizes, which required a significant amount of time for cutting and increased workload for workers. FIG. 1 is a schematic drawing showing the structure of a typical H-beam building, and FIG. 2 is a block diagram showing an H-beam building demolition method according to one embodiment of the present invention, and FIG. 3 is a drawing showing the demolition wall area set in an H-beam building in the demolition method of the present invention, and Figure 4 is a drawing showing a column of an H-beam building to explain the process of drilling a traction hole and cutting a part of the column in the demolition method of the present invention. FIG. 5 is an exemplary diagram illustrating the process of dismantling a demolition wall area in the demolition method of the present invention, and FIG. 6 is a drawing showing the completed state of inversion in which the demolition wall area is completely inverted to the ground in the demolition method of the present invention, and FIGS. 7 and 8 are drawings showing additional embodiments of the process of dismantling a demolition wall area in the demolition method of the present invention. The above objects, other objects, features, and advantages of the present invention will be easily understood through the following preferred embodiments associated with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed content is thorough and complete, and to ensure that the spirit of the present invention is sufficiently conveyed to those skilled in the art. In this specification, when a component is described as being on another component, it means that it may be formed directly on the other component or that a third component may be interposed between them. Additionally, in the drawings, the thicknesses of the components are exaggerated for the effective description of the technical content. The embodiments described herein will be explained with reference to cross-sectional and/or plan views, which are exemplary illustrations of the invention. In the drawings, the thicknesses of films and regions are exaggerated for effective explanation of the technical conten