KR102570649B1 - Method of demolition of underground exterior walls - Google Patents
Method of demolition of underground exterior walls Download PDFInfo
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- KR102570649B1 KR102570649B1 KR1020220142299A KR20220142299A KR102570649B1 KR 102570649 B1 KR102570649 B1 KR 102570649B1 KR 1020220142299 A KR1020220142299 A KR 1020220142299A KR 20220142299 A KR20220142299 A KR 20220142299A KR 102570649 B1 KR102570649 B1 KR 102570649B1
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000002689 soil Substances 0.000 claims abstract description 11
- 238000009412 basement excavation Methods 0.000 claims abstract description 7
- 239000004576 sand Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000004567 concrete Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 5
- 239000011440 grout Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000010485 coping Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
- E02D2300/0032—Steel; Iron in sheet form, i.e. bent or deformed plate-material
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
본 발명은 상향식 지하외벽 철거방법에 관한 것으로, 지하구조물의 바닥을 철거 한 후 되메우기 한 상태에서 지하외벽을 토압으로 지지한 상태에서 필요 구간만 터파기한 후 철거하게 됨으로써 지하외벽의 전도를 방지하면서 안정적으로 철거할 수 있도록 하고, 코어 작업을 통해 지하외벽을 블록형태로 절단하면서 순차적인 철거가 가능하도록 하는 상향식 지하외벽 철거방법에 관한 것이다.The present invention relates to a bottom-up underground outer wall demolition method, in which the underground outer wall is supported by earth pressure in a state in which the floor of the underground structure is demolished and then backfilled, and only the necessary section is excavated and then demolished, thereby preventing the underground outer wall from overturning and stably It relates to a bottom-up underground outer wall demolition method that enables sequential demolition while cutting the underground outer wall into blocks through core work.
도심지에서는 노후화된 철근콘크리트 구조의 건축물을 철거하고 신규 건축물을 구축하는 사례가 빈번하게 발생하고 있다. 그런데 이러한 도심지의 노후 건축물들은 대부분이 지하 1층 내지 4층 정도의 지하구조물을 가지고 있으며, 이러한 기존 건축물 부지에 신규 건축물을 구축하기 위해서 통상적으로 상기의 지하구조물을 포함한 기존 건축물의 철거가 선행되어 왔다.In urban areas, there are frequent cases of demolishing old buildings with reinforced concrete structures and constructing new ones. However, most of these old buildings in the downtown area have underground structures of about 1 to 4 floors below the ground, and in order to build a new building on the site of such an existing building, demolition of the existing building including the above underground structure has usually been preceded. .
이를 위해 기존 건물의 지하층 철거공법으로는 먼저 별도의 흙막이를 설치하고 강재를 사용하여 흙막이를 지지하도록 후에, 상부에서 하부층으로 내려가면서 기존 건물을 철거하는 방법을 일반적으로 적용하고 있다.To this end, as a demolition method for the basement floor of an existing building, a method of first installing a separate earth retaining wall and using steel to support the earth retaining wall, and then demolishing the existing building while going down from the top to the lower floor is generally applied.
지하층을 갖는 건물의 철거공사시, 지하층의 내부기둥을 포함한 바닥슬래브의 대부분이 모두 철거된 경우일지라도 토압을 받고 있는 건물의 외벽인 지하옹벽은 철거할 수 없는 경우가 많아 결국 그 옹벽을 그대로 남겨둔 상태에서 지하내부 공간 전체를 신속히 외부 반입토사로 되메우기하기도 한다.When demolishing a building with a basement floor, even if most of the floor slabs, including the internal pillars of the basement floor, are all removed, there are many cases where the basement retaining wall, which is the outer wall of the building under earth pressure, cannot be demolished, so the retaining wall is left as it is. In some cases, the entire underground space is quickly backfilled with soil brought in from the outside.
이러한 경우에 다음 공정인 신축건물 지하 터파기 공사시 신축하고자 하는 건물의 지하옹벽 라인이 철거대상이었던 잔류된 지하 옹벽라인과 겹치는 경우에 흙막이 공사를 위한 파일 천공작업등에 문제가 발생하게 된다. In this case, when the underground retaining wall line of the building to be newly built overlaps with the remaining underground retaining wall line that was to be demolished during the next process, the underground excavation of a new building, problems arise in pile drilling work for earth retaining work.
이를 해결하기 위하여 종래에는 부득이 존치된 지하옹벽을 제거하기 위한 목적의 흙막기 공사 및 굴토를 시행하여 잔류되었던 지하옹벽을 제거한 다음에 또다시 2차 되메우기를 실시함으로써 신축하고자 하는 대지경계 내의 지중에 아무런 장애물이 없는 나대지 상태를 만들고 있다. 그 후 지중에 아무런 장애물이 없는 나대지에 대하여 신축하고 하는 건물의 지하옹벽선에 맞춘 토공사를 재시작해야 하는 작업상의 비효율적인 문제점이 있다.In order to solve this problem, in the past, the earth retaining wall for the purpose of removing the underground retaining wall that was inevitably left was removed by excavation and the remaining underground retaining wall was removed, and then the secondary backfill was carried out again so that no ground within the site boundary to be newly built was left. We are creating a state of bare ground with no obstacles. After that, there is an inefficient problem in the work of restarting the earthwork according to the underground retaining wall line of the building being newly built on bare land with no obstacles in the ground.
상기와 같은 문제점을 해결하기 위한 본 발명의 목적은, 지하구조물의 바닥을 철거 한 후 되메우기 한 상태에서 지하외벽을 토압으로 지지한 상태에서 필요 구간만 터파기한 후 철거하게 됨으로써 지하외벽의 전도를 방지하면서 안정적으로 철거할 수 있도록 하고, 코어 작업을 통해 지하외벽을 블록형태로 절단하면서 순차적인 철거가 가능하도록 하는 상향식 지하외벽 철거방법에 관한 것이다.The purpose of the present invention to solve the above problems is to prevent the overturning of the underground outer wall by demolishing only the necessary section in a state where the underground outer wall is supported by earth pressure in a state where the floor of the underground structure is demolished and then backfilled, and then demolished. It relates to a bottom-up underground outer wall demolition method that allows for stable demolition while doing so, and enables sequential demolition while cutting the underground outer wall into blocks through core work.
상기한 바와 같은 목적을 달성하고 종래의 결점을 제거하기 위한 과제를 수행하는 본 발명은, 지하구조물의 바닥을 철거하는 바닥 철거단계; 이후 바닥 부분이 철거된 지하구조물의 내측공간을 되메우기 하는 되메우기 단계; 이후 지하외벽의 외측에 차수 및 토사 함몰 방지를 위해 그라우팅을 시공하는 그라우팅 단계; 이후 지하외벽 내면에 PS띠장을 설치하는 단계; 이후 철거하고자 하는 지하외벽이 노출되도록 지하외벽의 바닥까지 터파기 하는 터파기 단계; 이후 상기 지하외벽에 연속적인 코어 타공작업을 수행하여 지하외벽을 블록 형태로 절단하는 지하외벽 코어 절단단계; 이후 절단된 블록을 제거하는 블록 철거단계; 이후 상기 철거된 블록위치에 토사를 되메우기 하는 철거구역 되메우기 단계; 이후 지하외벽 코어 절단단계와, 블록 철거단계와, 되메우기 단계를 반복 수행하여 지하외벽의 폭 방향을 따라 지하외벽을 연속적으로 철거하는 연속 철거단계;를 포함하여 구성된 것을 특징으로 한다.The present invention to achieve the above object and to eliminate the conventional defects, the floor demolition step of demolishing the floor of the underground structure; Thereafter, a backfilling step of backfilling the inner space of the underground structure from which the bottom part was demolished; Thereafter, a grouting step of constructing grouting on the outside of the outer wall of the basement to prevent water blocking and soil sinking; Thereafter, installing a PS wale on the inner surface of the outer wall of the basement; Then, an excavation step of excavating to the bottom of the underground outer wall so that the outer underground wall to be demolished is exposed; Thereafter, a basement outer wall core cutting step of cutting the underground outer wall in a block form by performing a continuous core perforation operation on the outer basement wall; Afterwards, a block demolition step of removing the cut blocks; Thereafter, a demolition area backfilling step of backfilling earth and sand at the demolished block location; Thereafter, a continuous demolition step of continuously demolishing the underground outer wall along the width direction of the underground outer wall by repeatedly performing the underground outer wall core cutting step, the block demolition step, and the backfilling step; characterized in that it is configured to include.
또한 상기 연속철거단계를 통해 지하외벽의 1단 철거가 완료되면 철거된 지하외벽의 상측에도 상기 코어 절단단계와 블록 철거단계 및 되메우기 단계를 반복 수행하여 지하외벽의 높이 방향으로도 철거가 이루어지도록 구성되는 것을 특징으로 한다. In addition, when the one-stage demolition of the basement outer wall is completed through the continuous demolition step, the core cutting step, the block demolition step, and the backfilling step are repeatedly performed on the upper side of the demolished outer basement wall so that the demolition is also performed in the height direction of the outer basement wall. characterized by being
이상에서 설명한 바와 같이 본 발명에 의하면, 지하구조물의 바닥판만을 제거한 상태에서 다시 되메우기 하여 지하외벽을 토압으로 지지해준 상태에서 일부 구역의 지하외벽을 철거하게 됨으로써 지하외벽의 전도를 방지하면서 안정적인 철거를 할 수 있는 효과가 있다.As described above, according to the present invention, only the floor plate of the underground structure is removed and backfilled to remove the underground outer wall in some areas while the outer wall is supported by earth pressure, thereby preventing the outer wall from overturning and stably demolishing. There are effects that can be done.
또한 다수의 코어를 연속적으로 천공하여 지하외벽을 블록형태로 절단하여 철거가 이루어지도록 함으로써 인접대지 또는 협소한 공간에서도 시공이 원활하게 이루어지는 효과가 있다.In addition, by continuously perforating a plurality of cores and cutting the outer wall of the basement into blocks so that demolition is performed, there is an effect that construction is smoothly performed even in adjacent sites or narrow spaces.
또한 지하외벽을 블록형태로 절단하여 철거함으로써 지하외벽의 크기나 작업공간의 제한 없이 능동적인 대처가 가능하고 안정적인 시공이 이루어지는 효과가 있다.In addition, by cutting and demolishing the outer wall of the basement in the form of a block, it is possible to actively cope with the size of the outer wall or the limitation of the working space, and there is an effect of stable construction.
도 1 은 본 발명에 의한 지하외벽 철거 준비 상태를 나타낸 평면도,
도 2 는 본 발명에 의한 지하외벽 철거 준비 상태를 나타낸 측면도,
도 3 은 본 발명에 의한 지하외벽에 코어를 형성하는 상태를 나타낸 예시도,
도 4 는 본 발명에 의한 지하외벽의 철거 과정을 나타낸 예시도,
도 5 는 본 발명에 따른 지하외벽에 띠장을 설치한 측면도,1 is a plan view showing a state of preparation for demolition of an underground outer wall according to the present invention;
Figure 2 is a side view showing a state of preparation for demolition of the outer wall of the basement according to the present invention;
3 is an exemplary view showing a state in which a core is formed on an underground outer wall according to the present invention;
4 is an exemplary view showing the demolition process of the outer wall of the basement according to the present invention;
5 is a side view of installing a wale on the outer wall of the basement according to the present invention;
이하 본 발명의 실시 예인 구성과 그 작용을 첨부도면에 연계시켜 상세히 설명하면 다음과 같다. 또한 본 발명을 설명함에 있어서, 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명은 생략한다.Hereinafter, the configuration and operation of an embodiment of the present invention will be described in detail in association with the accompanying drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.
도 1 은 본 발명에 의한 지하외벽 철거 준비 상태를 나타낸 평면도, 도 2 는 본 발명에 의한 지하외벽 철거 준비 상태를 나타낸 측면도, 도 3 은 본 발명에 의한 지하외벽에 코어를 형성하는 상태를 나타낸 예시도, 도 4 는 본 발명에 의한 지하외벽의 철거 과정을 나타낸 예시도, 도 5 는 본 발명에 따른 지하외벽에 띠장을 설치한 측면도로서,Figure 1 is a plan view showing a state of preparation for demolition of the basement outer wall according to the present invention, Figure 2 is a side view showing a state of preparation for demolition of the basement outer wall according to the present invention, Figure 3 is an example showing a state of forming a core in the basement outer wall according to the present invention Figure 4 is an exemplary view showing the demolition process of the basement outer wall according to the present invention, Figure 5 is a side view of installing a wale on the basement outer wall according to the present invention,
본 발명은, 바닥 철거단계와, 되메우기 단계와, 그라우팅 단계와, PS띠장 설치단계와, 터파기 단계와, 지하외벽 코어 절단단계와, 블록 철거단계와, 철거구역 되메우기 단계와, 연속 철거단계를 포함하여 구성된다.In the present invention, the floor demolition step, the backfill step, the grouting step, the PS furrow installation step, the excavation step, the underground outer wall core cutting step, the block demolition step, the demolition area backfilling step, and the continuous demolition step. composed of
상기 바닥 철거단계는, 지하구조물을 제거하는 과정에서 바닥을 먼저 철거하는 과정이다.The floor demolition step is a process of first demolishing the floor in the process of removing the underground structure.
이때 상기 바닥을 철거하는 과정에서 지하외벽(100)의 전도를 방지할 수 있도록 바닥의 가장자리는 일부 남겨놓은 상태로 철거하는 것이 바람직하다.At this time, in the process of removing the floor, it is preferable to remove the edge of the floor while leaving a part so as to prevent the fall of the outer wall 100 of the basement.
즉 바닥을 철거하는 과정에서 지하외벽(100)과의 경계면 끝까지 완전히 철거하게 되면 지하외벽(100)이 내측으로 전도될 우려가 있으며, 바닥을 완전히 철거하지 않고 가장자리는 남겨두고 중심부만을 철거하게 됨으로써 지하외벽(100)의 전도를 방지하게 된다.That is, in the process of demolishing the floor, if it is completely demolished to the end of the boundary with the basement outer wall 100, there is a risk that the basement outer wall 100 will be inverted inward. The conduction of the outer wall 100 is prevented.
이렇게 제거되지 않은 바닥의 가장자리 부분은 후술되는 지하외벽(100)의 철거 과정에서 지하외벽(100)과 동시에 철거한다.The edge portion of the floor that is not removed in this way is removed simultaneously with the underground outer wall 100 in the demolition process of the underground outer wall 100 described later.
상기 되메우기 단계는 지하구조물의 바닥을 철거한 후 지하외벽(100)에 의해 둘러쌓인 내부공간에 토사(300)를 채워 되메우기 하는 과정이다.The backfilling step is a process of removing the floor of the underground structure and then filling the inner space surrounded by the outer wall 100 with soil 300 to backfill it.
이렇게 내부공간을 토사(300)를 되메우기 함으로써 되메우기된 토사(300)의 토압에 의해 지하외벽(100)이 내부방향으로 전도되지 않게 된다.By backfilling the interior space with soil 300, the outer basement wall 100 is not inverted inward by the earth pressure of the backfilled soil 300.
이와 같이 되메우기한 토사(300)에 의해 지하외벽(100)의 전도를 방지해주게 됨으로써 안정적으로 지하외벽(100)을 철거할 수 있게 된다.In this way, the backfill soil 300 prevents the underground outer wall 100 from overturning, so that the underground outer wall 100 can be stably removed.
상기 그라우팅 단계는 도 1,2 에서와 같이 일정한 간격으로 지중을 천공한 다음 그라우트(200)를 압입하면서 주입함으로써 천공홀 및 천공홀 주변으로 그라우트(200)가 채워지도록 함으로써 차수 및 토사의 함몰을 방지해주게 되는 것이다.In the grouting step, as shown in FIGS. 1 and 2, the ground is drilled at regular intervals and then the grout 200 is injected while press-fitting so that the grout 200 is filled in the perforation hole and the vicinity of the perforation hole, thereby preventing water order and soil sinking. it will do
이렇게 그라우트를 주입하여 지반의 안정성을 확보한 상태에서 안전한 시공이 이루어지게 된다.In this way, the safe construction is performed in a state in which the stability of the ground is secured by injecting the grout.
다만, 지하외벽(100) 주변이 암반 등으로 이루어져 그라우팅이 필요치 않다고 판단되면 상기 그라우팅 단계는 생략될 수 있다.However, if it is determined that the periphery of the outer basement wall 100 is made of bedrock and the like and grouting is not necessary, the grouting step may be omitted.
상기 PS띠장(500) 설치단계는 철거대상인 지하외벽(100) 내면에 설치하는 것으로서, 지하외벽(100)이 전도될 경우를 대비하여 지하외벽(100)에 PS띠장(500)과 스트럿(600)을 설치하여 지하외벽(100)을 견고히 지지하게 된다. The PS wale 500 installation step is to install on the inner surface of the underground outer wall 100 to be demolished, in case the underground outer wall 100 is overturned. PS wale 500 and strut 600 on the underground outer wall 100 By installing it, the basement outer wall 100 is firmly supported.
일반적으로 띠장은 수직으로 H빔을 설치한 후 H빔에 용접하여 띠장 설치를 하지만, 본 발명에서는 콘크리트 구조물인 지하외벽(100)에 PS띠장(500)을 설치하게 됨으로써 일반적인 띠장 설치 방법과는 차이가 있다.In general, the wale is installed by welding the H beam after installing the H beam vertically, but in the present invention, the PS wale 500 is installed on the underground outer wall 100, which is a concrete structure, so it is different from the general wale installation method there is
지하외벽(100)을 천공하여 수평으로 세트앵커(800)를 삽입 설치한 후 세트앵커에 L형상의 앵글(700)을 용접하여 PS띠장(500)이 얹혀지는 형태로 설치하며, PS띠장 설치 완료후에는 필요에 따라 스트럿(600)과 같은 지지구조물을 추가로 설치하게 되는 것이다.After drilling the basement outer wall 100 and inserting and installing the set anchor 800 horizontally, the L-shaped angle 700 is welded to the set anchor to install the PS wale 500 on top, and the PS wale installation is completed After that, a support structure such as the strut 600 is additionally installed as needed.
PS띠장은 일반적인 H빔 형상의 띠장과 달리 토압에 저항하는 강성을 높인 구조이므로 같은 공간에서 스트럿 등의 부자재를 적게 설치할 수 있어 중장비의 작업공간을 확보하는데 유리하다.Unlike the general H-beam-shaped wale, the PS wale has a structure with increased rigidity to resist earth pressure, so it is advantageous to secure work space for heavy equipment as it can install less subsidiary materials such as struts in the same space.
상기 터파기 단계는 도 2에서와 같이 철거하고자 하는 지하외벽(100)의 전방을 터파기하되, 지하외벽(100)의 최하단이 노출되는 깊이까지 터파기 하는 과정이다. The excavation step is a process of excavating the front of the underground outer wall 100 to be demolished to a depth at which the lowermost end of the underground outer wall 100 is exposed, as shown in FIG.
예를 들어 지하구조물이 통상의 4개의 지하외벽(100)을 갖는 구조물일 경우 일측의 지하외벽(100) 철거작업 부분을 터파기하여 지하외벽(100)의 최하단이 노출되도록 하고, 나머지 부분은 터파기하지 않고 토사에 의해 지지된 상태를 유지하게 됨으로써 철거가 이루어지지 않는 지하외벽(100)이 전도되는 것을 방지된다.For example, if the underground structure is a structure having four normal underground outer walls 100, one side of the underground outer wall 100 is demolished to expose the lowermost part of the underground outer wall 100, and the other part is excavated. By maintaining a state supported by soil without doing so, the underground outer wall 100, which is not removed, is prevented from being overturned.
상기 지하외벽 코어 절단단계는 도 3 및 도4의 (a)와 같이 상기 지하외벽(100)에 연속적인 코어(400) 타공작업을 수행하여 지하외벽(100)을 블록 형태로 절단하는 과정이다.The underground outer wall core cutting step is a process of cutting the underground outer wall 100 in a block form by performing a continuous core 400 perforation work on the underground outer wall 100 as shown in FIGS. 3 and 4 (a).
상기 코어(400) 타공은, 코어 타공장치를 이용하여 지하외벽(100)에 코어를 타공하고 먼저 타공된 코어(400)에 겹쳐지도록 추가 코어(400)를 연속적으로 타공함으로써 지하외벽(100)을 적정크기의 블록 형태로 분리해주게 되는 것이다.The perforation of the core 400 is performed by perforating a core in the basement outer wall 100 using a core perforation device and continuously perforating additional cores 400 so as to overlap the previously perforated core 400 to form the underground outer wall 100. It is divided into blocks of appropriate size.
상기 블록 철거단계는 도 4 의 (b)에서와 같이 코어(400) 작업을 통해 블록 형태로 절단된 지하외벽(100)을 철거하는 과정이다.The block demolition step is a process of demolishing the underground outer wall 100 cut into a block shape through the core 400 work, as shown in FIG. 4 (b).
상기 철거구역 되메우기 단계는 도 4 의 (c)에서와 같이 상기 지하외벽(100)의 철거 위치에 토사(300)를 되메우기 하여 지하외벽(100)의 안정성이 확보되도록 하는 과정이다.The backfilling of the demolition area is a process of backfilling the soil 300 at the demolition location of the underground outer wall 100 as shown in (c) of FIG. 4 to secure the stability of the underground outer wall 100.
이렇게 지하외벽(100)을 코어(400) 타공을 통해 블록 형태로 절단하여 제거하게 됨으로써 지하외벽(100)의 크기나 작업공간의 제한 없이 능동적으로 대처하여 원활하고 빠른 철거 작업이 가능하게 된다.In this way, the underground outer wall 100 is cut and removed in a block form through the perforation of the core 400, thereby actively coping with the size of the underground outer wall 100 or without restrictions on the working space, enabling smooth and fast demolition work.
또한 지하외벽(100)을 블록 형태로 제거하면서 제거된 부분은 다시 되메우기 함으로써 지하외벽(100)의 전도를 방지하면서 안정적으로 제거할 수 있게 되는 것이다.In addition, by removing the underground outer wall 100 in the form of a block and refilling the removed part, it is possible to stably remove the underground outer wall 100 while preventing it from being overturned.
상기 연속 철거단계는 도 4 의 (d),(e),(f)에서와 같이 지하외벽 코어 절단단계와, 블록 철거단계와, 되메우기 단계를 반복 수행하여 지하외벽(100)을 적정 크기의 블록 형태로 절단하면서 연속적으로 철거하는 과정이다.In the continuous demolition step, as shown in (d), (e), and (f) of FIG. 4, the underground outer wall core cutting step, the block demolition step, and the backfilling step are repeatedly performed to construct the underground outer wall 100 with appropriately sized blocks. It is a process of continuous demolition while cutting into shapes.
상기와 같이 지하외벽(100)을 코어(400) 형성을 통해 일정한 크기로 절단하여 제거하고 제거된 부분은 다시 되메우기 함으로써 지하외벽(100)의 전도를 방지하면서 안정적으로 제거할 수 있게 되는 것이다.As described above, the underground outer wall 100 is cut to a certain size through the formation of the core 400 and removed, and the removed portion is refilled to stably remove the underground outer wall 100 while preventing it from being overturned.
한편 본 발명은 상기 연속철거단계를 통해 지하외벽(100)의 폭방향으로 1개 단의 철거가 완료되면 철거된 지하외벽(100)의 상측에도 상기 코어 절단단계와 블록 철거단계 및 되메우기 단계를 반복 수행하여 지하외벽의 최상단까지 단계적으로 철거하게 되는 것이다.Meanwhile, in the present invention, when the demolition of one stage in the width direction of the underground outer wall 100 is completed through the continuous demolition step, the core cutting step, the block demolition step, and the backfilling step are repeated on the upper side of the demolished underground outer wall 100. It will be carried out and demolished step by step to the top of the outer wall of the basement.
이와 같이 구성되는 본 발명은 지하구조물의 바닥판만을 제거한 상태에서 다시 되메우기 하여 지하외벽(100)을 토압으로 지지해준 상태에서 일부 구역의 지하외벽(100)을 철거하게 됨으로써 지하외벽(100)의 전도를 방지하면서 안정적인 철거가 이루어지게 된다.In the present invention configured as described above, the underground outer wall 100 is demolished in a state in which only the floor plate of the underground structure is removed and the underground outer wall 100 is supported by earth pressure, thereby reducing the conduction of the underground outer wall 100 While preventing this, stable demolition is achieved.
또한 다수의 코어(400)를 연속적으로 천공하여 지하외벽(100)을 블록형태로 절단하여 철거가 이루어지도록 함으로써 인접대지 또는 협소한 공간에서도 시공이 원활하게 이루어지게 된다.In addition, by continuously drilling a plurality of cores 400 to cut the underground outer wall 100 in a block form so that demolition is performed, construction can be smoothly performed even in adjacent sites or narrow spaces.
또한 지하외벽(100)을 블록형태로 절단하여 철거함으로써 지하외벽(100)의 크기나 작업공간의 제한 없이 능동적인 대처가 가능하고 안정적인 시공이 이루어지게 된다.In addition, by cutting and removing the underground outer wall 100 in a block form, active coping is possible and stable construction is achieved without restrictions on the size or working space of the underground outer wall 100.
본 발명은 상술한 특정의 바람직한 실시 예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.The present invention is not limited to the specific preferred embodiments described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes are within the scope of the claims.
(100) : 지하외벽
(200) : 그라우트
(300) : 토사
(400) : 코어
(500) : PS띠장
(600) : 스트럿
(700) : 앵글
(800) : 세트앵커(100): basement outer wall
(200): grout
(300): Tosa
400: Core
(500): PS band
(600): strut
(700): angle
(800): set anchor
Claims (3)
이후 바닥 부분이 철거된 지하구조물의 내측공간을 되메우기 하는 되메우기 단계;
이후 지하외벽의 외측에 차수 및 토사 함몰 방지를 위해 그라우팅을 시공하는 그라우팅 단계;
이후 지하외벽 내면에 PS띠장을 설치하는 단계;
이후 철거하고자 하는 지하외벽이 노출되도록 지하외벽의 바닥까지 터파기 하는 터파기 단계;
이후 상기 지하외벽에 연속적인 코어 타공작업을 수행하여 지하외벽을 블록 형태로 절단하는 지하외벽 코어 절단단계;
이후 절단된 블록을 제거하는 블록 철거단계;
이후 상기 철거된 블록위치에 토사를 되메우기 하는 철거구역 되메우기 단계;
이후 지하외벽 코어 절단단계와, 블록 철거단계와, 되메우기 단계를 반복 수행하여 지하외벽의 폭 방향을 따라 지하외벽을 연속적으로 철거하는 연속 철거단계;를 포함하며,
상기 PS띠장 설치단계는 콘크리트 구조물인 지하외벽 내면에 설치하는 것으로서, 지하외벽을 천공하여 수평으로 세트앵커를 삽입 설치한 후 세트앵커에 L형상의 앵글을 용접하여 PS띠장이 얹혀지는 형태로 설치되고,
상기 연속철거단계를 통해 지하외벽의 1단 철거가 완료되면 철거된 지하외벽의 상측에도 상기 코어 절단단계와 블록 철거단계 및 되메우기 단계를 반복 수행하여 지하외벽의 높이 방향으로도 철거가 이루어지도록 구성되는 것을 특징으로 하는 상향식 지하외벽 철거방법.Floor demolition step of removing the floor of the underground structure;
Thereafter, a backfilling step of backfilling the inner space of the underground structure from which the bottom part was demolished;
Thereafter, a grouting step of constructing grouting on the outside of the outer wall of the basement to prevent water blocking and soil sinking;
Thereafter, installing a PS wale on the inner surface of the outer wall of the basement;
Then, an excavation step of excavating to the bottom of the underground outer wall so that the outer underground wall to be demolished is exposed;
Thereafter, a core cutting step of cutting the outer basement wall into a block shape by performing a continuous core drilling operation on the outer basement wall;
Afterwards, a block demolition step of removing the cut blocks;
Thereafter, a demolition area backfilling step of backfilling earth and sand at the demolished block location;
Thereafter, a continuous demolition step of continuously demolishing the underground outer wall along the width direction of the underground outer wall by repeatedly performing the underground outer wall core cutting step, the block demolition step, and the backfilling step; including,
The PS wale installation step is to install on the inner surface of the outer wall of the basement, which is a concrete structure, by drilling the outer wall of the basement, inserting and installing a set anchor horizontally, and then welding an L-shaped angle to the set anchor to install the PS wale on top ,
When the one-stage demolition of the outer basement wall is completed through the continuous demolition step, the core cutting step, the block demolition step, and the backfilling step are repeatedly performed on the upper side of the demolished outer wall, so that the demolition is also performed in the height direction of the outer wall of the basement. Bottom-up underground outer wall demolition method, characterized in that.
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| KR102706180B1 (en) * | 2023-09-20 | 2024-09-11 | 김희연 | Underground structure demolition method using existing underground strucutres |
| KR20250141435A (en) * | 2024-03-20 | 2025-09-29 | 김원철 | Reverse demolition process of basement floor |
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| KR102068129B1 (en) | 2019-02-20 | 2020-02-24 | (주)옥당산업 | Demolition method of basement of building using underground structure as support |
| KR102301605B1 (en) * | 2021-01-22 | 2021-09-10 | 차상호 | A Method of Bottom-up Removal of Underground Structures |
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| KR20100101271A (en) | 2009-03-09 | 2010-09-17 | 이동희 | Method for removing the superannuated build as top-down type |
| KR101410471B1 (en) * | 2014-01-16 | 2014-06-23 | 주식회사 백산이앤티건설 | Method for buttom-up removal of underground retaining wall by using h-piles remained in earth retaining work of existed building |
| KR102068129B1 (en) | 2019-02-20 | 2020-02-24 | (주)옥당산업 | Demolition method of basement of building using underground structure as support |
| KR102301605B1 (en) * | 2021-01-22 | 2021-09-10 | 차상호 | A Method of Bottom-up Removal of Underground Structures |
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| KR102706180B1 (en) * | 2023-09-20 | 2024-09-11 | 김희연 | Underground structure demolition method using existing underground strucutres |
| KR20250141435A (en) * | 2024-03-20 | 2025-09-29 | 김원철 | Reverse demolition process of basement floor |
| KR102906337B1 (en) | 2024-03-20 | 2026-01-02 | 주식회사 원탑산업개발 | Reverse demolition process of basement floor |
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