KR20070035183A - Separating method of Monowall with spandrel girders - Google Patents

Separating method of Monowall with spandrel girders Download PDF

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KR20070035183A
KR20070035183A KR1020050089743A KR20050089743A KR20070035183A KR 20070035183 A KR20070035183 A KR 20070035183A KR 1020050089743 A KR1020050089743 A KR 1020050089743A KR 20050089743 A KR20050089743 A KR 20050089743A KR 20070035183 A KR20070035183 A KR 20070035183A
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plywood
wall
pressure
construction
building
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KR100767953B1 (en
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이창남
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이창남
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/045Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/06Foundation trenches ditches or narrow shafts
    • E02D17/08Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations

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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)
  • Environmental & Geological Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

건물의 바닥보를 흙막이 가설버팀대로 활용할 때 상부 외벽(합벽)을 선시공하면 하부 외벽을 시공하기가 어려우므로 합벽 시공을 유보해도 토압과 수압을 버팀대에 안전하게 전달하는 방법을 제시한다.When using the floor beam of a building as a temporary block, it is difficult to construct the lower outer wall when the upper outer wall (plywood) is pre-installed. Therefore, we propose a method to safely deliver earth pressure and water pressure to the brace even if the plywood is suspended.

재래식 공법은 흙을 파면서 층마다 띠장(Spandrel Girder)을 선 시공하는데 띠장과 합벽은 같은 공간을 점유하므로 띠장의 간섭을 피하여 합벽을 시공하려면 철근도 층마다 토막 내고 콘크리트는 띠장에 묻어둔 파이프를 통해야만 부어 넣는 어려움을 감수해야 한다.The conventional method is to install the Spandrel Girder on each floor while digging soil.Because the strip and the plywood occupy the same space, to construct the plywood to avoid the interference of the strip, the pipes are cut into each layer and the concrete is buried in the band. You have to take the difficulty to pour it through.

도 1, 2, 3에서 CIP등 가설 흙막이 공사 후 RCD나 PRD로 천공한 구멍에 H형강 또는 ㄱ형강 조립기둥을 삽입한다. 기둥 사이에 보(TSC보일 경우)를 조립하고 작은 보도 설치하는데 이들은 좌우 흙막이 벽의 토압과 수압을 버텨주는 역할을 한다. Full Top Down 공법은 바닥 슬래브가 버팀대 역할을 하지만 본 공법은 건물의 보로만 토압과 수압을 지지하므로 수평 보가 필수적이다. 도 1에서 최외곽 보가 수평 보 역할을 하기 위해서는 흙막이 벽에 밀착 시공하는 것이 일반적인 방법이다. 그러나 이 방법은 합벽 시공에 어려움을 주므로 외곽 보를 합벽과 격리시켜 내부에 배치하고 그 사이 빈 공간에 적당한 간격으로 T볼트를 끼워 흙막이 벽의 하중을 외곽 보에 전달시킨다. 도 1에서 1, 5, A, C열의 안 쪽과 같이 바닥 슬래브 일부를 사전 시공하면 외곽 보와 협력하여 토압에 의한 수평 방향 휨모멘트에 저항한다. 또한 B열 보 좌우에는 슬래브 일부를 선 시공하여 압축력을 부담시킨다.In Figures 1, 2, and 3 after the construction of the temporary earthquake, such as CIP insert the H-beam or a-beam assembly pillar into the hole drilled by RCD or PRD. Assemble beams (if TSC beams) between the columns and install small walkways, which act to support the earth pressure and water pressure on the left and right retaining walls. In the full top down method, the floor slab acts as a brace, but this method supports the earth pressure and water pressure only in the building's bore, so a horizontal beam is essential. In order for the outermost beam to serve as a horizontal beam in FIG. 1, it is a general method to construct a close contact with an earth wall. However, this method makes the construction of the plywood difficult, so the outer beam is separated from the plywood and placed inside, and the T-bolts are inserted in the empty space between them to transfer the load of the retaining wall to the outer beam. In FIG. 1, when a part of the bottom slab is pre-installed, such as the inside of columns 1, 5, A, and C, it cooperates with the outer beam to resist the horizontal bending moment due to earth pressure. In addition, part of the slab is pre-installed to the left and right of the column B beam to compress the compressive force.

도 3에서 외곽 보(TSC 보의 예시)와 지압판을 강관과 볼트로 조립하여 바닥 슬래브의 외곽 거푸집 역할을 하게 한다. 지압 판은 CIP 내면에 ㄷ형강을 대고 T볼트의 머리판을 밀착시켜 지압 판에 고정한다. 합벽의 철근 배근은 재래식 방법에 준한다. 건물의 바닥보를 버팀대로 활용하여 지하실 흙 파기를 할 때 띠장 시공을 생략하면 공기도 단축되고 기초 공사를 마친 후 합벽을 시공하는 것이 손쉽고 합벽의 시공 품질이 향상되는 효과가 있다.In Figure 3, the outer beam (example of TSC beam) and the pressure plate is assembled with a steel pipe and bolt to serve as the outer formwork of the floor slab. The pressure plate is fixed to the pressure plate by placing the c-beam on the inner surface of the CIP and closely attaching the head plate of the T bolt. Reinforcement of the plywood wall follows the conventional method. If you use the floor covering of the building as a brace to omit the construction of the basement, omitting the construction of the belts will shorten the air, and it will be easier to construct the plywood after finishing the foundation work and improve the construction quality of the plywood walls.

Description

흙막이 합벽과 외곽 보의 이격 공법{Separating method of Monowall with spandrel girders}Separating method of Monowall with spandrel girders

도 5, 6과 같이 건물의 보를 흙막이 가설 버팀대로 활용하는 공법은 흙을 파는 과정에서 층마다 띠장(Spandrel Girder)을 선시공하여야 하므로 번거로울 뿐만 아니라 기초공사를 완료하고 합벽을 시공하는 방법이 쉽지 않다. 선 시공된 띠장 하부에 합벽을 시공하려면 철근도 층마다 토막 내서 잇거나 용접해야 하며 콘크리트를 부어 넣는 것도 띠장에 일정 간격으로 사전에 묻어둔 파이프를 통하여 하향 공법만 가능하므로 부실시공 될 가능성이 큰 것이 단점이다.5 and 6, the method of utilizing the beam of the building as a support for the construction of the earthen block is not only cumbersome, but also a method of completing the foundation work and constructing the plywood wall is not easy because it requires the construction of Spandrel Girder for each floor in the process of digging the soil. In order to install the plywood under the pre-constructed band, the reinforcing bars must be cut or welded into each floor.In addition, the concrete can be poured only through the pipes buried in advance at regular intervals. It is a disadvantage.

신축하는 건물의 보를 흙막이 버팀대로 활용하기 위하여서는 CIP(1) 등 흙막이 벽에 작용하는 토압과 수압을 버팀대에 안전하게 전달하는 매개체 즉 띠장(Spandrel Girder)이 필수적이다. 그러나 도 5, 6과 같은 종래의 방법대로 사전에 거대한 철근콘크리트 수평보를 설치하려면 공사 기간은 물론 공사비가 과대해지며 후에 합벽(3)을 시공하는데 지장을 주게 되므로 이를 생략하는 것이 기술적 과제이다.In order to utilize the beam of a new building as a prop, the Spandrel Girder is a medium that safely transmits the earth pressure and water pressure acting on the wall of the retainer such as CIP (1). However, in order to install a huge reinforced concrete horizontal beam in advance according to the conventional method as shown in Figures 5 and 6, as well as the construction period, the construction cost becomes excessive, and later it is difficult to construct the plywood (3) is a technical problem.

도 1, 2, 3에서 재래식 방법으로 CIP등 가설 흙막이 공사를 하고 기둥 위치에 RCD나 PRD등 천공장비로 소정의 깊이까지 굴착한 후 기둥을 삽입한다. 기둥 재료는 재래식으로 H형강을 사용하거나 ㄱ형강 조립기둥으로 한다. 인접 기둥들 사이에 TSC보를 조립하고 필요에 따라 도 1과 같이 작은 보를 설치하는데 이들 건물의 보들은 한 쪽 흙막이 벽에서 전달되는 토압과 수압을 반대편 흙막이 벽에 전달하는 버팀대 역할을 한다.1, 2, and 3 in the conventional method to construct a temporary earthquake, such as CIP, and excavated to a predetermined depth with drilling equipment such as RCD or PRD at the position of the pillar and insert the pillar. The column material is conventionally made of H-beam or a-beam assembly column. Assemble the TSC beams between adjacent columns and install small beams as shown in Figure 1, where the beams in these buildings serve as a prop to transfer the earth pressure and water pressure from the one wall to the other wall.

Full Top Down 공법처럼 흙을 파내려 가면서 바닥 슬래브를 전부 시공한다면 바닥 슬래브가 버팀대 역할을 하게 되지만 건물의 바닥 보로만 토압과 수압을 지지하기 위해서는 흙막이 벽의 하중을 보에 전달하기 위한 수평 보가 필요하다. 도 1에서 흙막이 벽에 인접한 최 외곽 보(1, 5, A, C열)가 수평 보 역할을 하기 위해서는 이들을 흙막이 벽에 밀착 시공하는 것이 일반적인 방법이다. 그러나 이렇게 하면 후에 합벽과 간섭되어 시공하기가 어려워지므로 외곽 보를 합벽 두께만큼 내부로 이동시키고 그 사이에 적당한 간격으로 T볼트(9)를 끼워 합벽을 시공할 때까지 흙막이 벽의 하중을 외곽 보에 전달하게 한다. 외곽 보만으로는 횡 하중을 지지하기에 부족하므로 도 1의 1, 5, A, C열의 안쪽과 같이 바닥 슬래브 일부를 사전 시공하면 외곽 보와 협력하여 토압으로 야기되는 수평 방향 휨모멘트에 저항하게 된다. 또한 B열 보는 1열과 5열로부터 토압과 수압 부담 면적이 커서 보만으로 압축력을 받기에 부족할 경우 좌우 슬래브(6) 일부를 선 시공하여 압축력을 부담시킨다.If you install all the floor slabs while digging up the soil like the Full Top Down method, the floor slab acts as a brace, but to support the earth pressure and water pressure with only the floor beam of the building, a horizontal beam is required to transfer the load of the wall of the brick wall to the beam. . In FIG. 1, in order for the outermost beams 1, 5, A, and C adjacent to the retaining wall to serve as horizontal beams, it is common to construct them in close contact with the retaining wall. However, this will interfere with the plywood wall later, making it difficult to install, so move the outer beam to the inside by the thickness of the plywood wall and insert the T bolts (9) at appropriate intervals between them to transfer the load of the retaining wall to the outer beam until the plywood is constructed. Let's do it. Since the outer beam alone is not sufficient to support the lateral load, if a part of the bottom slab is pre-installed, such as the inside of columns 1, 5, A, and C of FIG. 1, the outer beam cooperates with the outer beam to resist the horizontal bending moment caused by the earth pressure. In addition, column B beams from the first and the fifth column, if the earth pressure and hydraulic pressure area is large enough to receive the compressive force only by the beam, pre-construct a portion of the left and right slab (6) to bear the compressive force.

도 3에서 TSC보의 상부 수직 플랜지와 지압판(10) 사이에 강관을 끼운 상태에서 볼트 구멍에 볼트를 끼워 조이고 지압판 하단은 TSC보에 점용접하여 바닥 슬래브 콘크리트를 시공하는 동안 최외곽 거푸집 역할을 하게 한다. 지압판은 CIP 내면에 등을 대고 설치한 ㄷ형강(8)의 웨브에 T형 볼트의 머리 판을 밀착시킨다. T볼트(9)는 너트를 머리판 쪽으로 이동시킨 상태에서 볼트 끝을 지압 판에 뚫은 볼트 구멍에 끼우고 너트를 지압판(10) 방향으로 돌려서 고정한다. 이 너트는 바닥 슬래브가 양생된 후 CIP 흙막이 벽에서 전달받은 횡 하중을 지압 판에 전달하는 역할을 하므로 빈틈없이 확실하게 조여야 한다. CIP의 직경이 400mm인 경우는 T볼트의 간격도 400mm로 함이 적당하다. 합벽의 철근은 재래식 방법으로 구조계산 하고 기초 공사 후 상 방향으로 시공한다.In FIG. 3, the steel pipe is inserted between the upper vertical flange of the TSC beam and the pressure plate 10, and the bolt is inserted into the bolt hole, and the bottom of the pressure plate is spot welded to the TSC beam to serve as the outermost formwork during construction of the floor slab concrete. do. The pressure plate is in close contact with the head plate of the T-shaped bolt to the web of the c-shaped steel (8) installed on the back of the CIP. T-bolt (9) while the nut is moved to the head plate, the bolt end is inserted into the bolt hole drilled in the acupressure plate and fixed by turning the nut toward the acupressure plate (10). This nut must be tightened tightly, as it acts to transfer the lateral loads received from the CIP mud walls to the pressure plate after the bottom slab has been cured. If the diameter of the CIP is 400mm, the interval between the T bolts is also suitable to be 400mm. The reinforcing bar of the plywood is structurally calculated by the conventional method and constructed in the upward direction after the foundation work.

건물의 보를 가설 버팀대로 활용하는 지하실 흙파기를 하는 과정에서 띠장 시공을 생략하면 공기도 단축되고 기초 공사를 마친 후 합벽(3)을 시공하는 것이 손쉽고 균열 등 하자 발생 가능성이 줄어드는 효과가 있다.Omitting the construction of the strip in the process of digging the basement soil using the beams of the building as a temporary support shortens the air, and it is easy to construct the plywood (3) after finishing the foundation work.

도 1은 흙막이 합벽과 외곽 보의 이격 공법 평면도,1 is a plan view of the separation between the earthed plywood wall and the outer beam,

도 2, 3a, 3b는 흙막이 합벽과 외곽 보의 이격 공법 단면도,2, 3a, 3b is a spaced apart cross-sectional view of the cladding plywood and the outer beam,

도 4는 흙막이 합벽과 외곽 보의 이격 공법 부분 평면도,4 is a partial plan view of the separation method of the cladding plywood and the outer beam;

도 5, 6은 굴토하면서 상부의 띠장(Spandrel Girder)을 선시공하는 단면도,5 and 6 is a cross-sectional view of the construction of the Spandrel Girder of the upper part while gulling,

도 7은 T볼트의 사시도이다.7 is a perspective view of a T bolt.

<도면의 부호에 대한 간단한 설명><Brief description of the symbols in the drawings>

1 : CIP 2 : H형강1: CIP 2: H section steel

3 : 합벽 4 : 기둥3: plywood 4: column

5 : TSC보 6 : 슬래브5: TSC beams 6: slab

7 : 강관+볼트 8 : ㄷ형강7: Steel pipe + bolt 8: C-beam

9 : T볼트 10 : 지압판9: T bolt 10: Acupressure plate

11 : 트러스데크 또는 PC판11: truss deck or PC version

Claims (3)

신축되는 건축물의 지하토공사를 진행함에 있어서, 건축물의 지하실 바닥 보를 한 쪽 흙막이 합벽에서 반대편 흙막이 합벽으로 연결되도록 설치하여 토압과 수압을 전달하는 버팀대 역할을 함에 있어서 ;In proceeding with the underground construction of a new building, the basement floor beam of the building is installed so that one earthquake is connected from the plywood to the other plywood to act as a support for transmitting earth pressure and water pressure; 상기 보 가운데 외곽 보를 합벽 두께만큼 내부로 이격시키고, 그 사이에 T볼트(9)를 끼워 합벽(3)을 시공할 때까지 흙막이 벽의 하중을 외곽 보에 전달하게 하는 흙막이 합벽과 외곽 보의 이격 공법.Spaced between the cladding wall and the outer beam to allow the outer beam to be transferred to the outer beam until the construction of the wall (3) by inserting the T-bolt (9) between the outer beam in the middle of the beam, Method. 제 1항에 있어서 외곽 보만으로 토압과 수압을 저항하지 못하는 경우 흙막이 합벽에 접하는 부분의 건물 안쪽으로 슬래브(6) 일부만을 선시공하여 외곽 보와 함께 토압과 수압을 부담토록 하는 흙막이 합벽과 외곽 보의 이격 공법.The method of claim 1, when the soil beam cannot resist soil pressure and water pressure, only a part of the slab 6 is installed inside the building where the soil wall is in contact with the plywood wall. Separation method. 제 1, 2항에 있어서 흙막이 합벽(3)과 외곽 보는,The mud wall 3 and the outward view of claim 1, CIP(1) 등의 가설 흙막이벽에 ㄷ형강(8)의 웨브 뒷면을 붙이고, ㄷ형강의 안쪽 웨브에 T볼트(9) 머리 부분을 고정시키도록 구성하며 ;Attaching the back of the web of the c-beams 8 to a temporary soil wall such as CIP (1), and fixing the T-bolt 9 head to the inner web of the c-beam; 상기 T볼트의 너트는 지압판에 고정시키고, 지압판은 외곽보에 설치하며 ; 및The nut of the T bolt is fixed to the pressure plate, the pressure plate is installed on the outer beam; And 외곽보에 뚫려 있는 구멍을 이용하여 강관+볼트(7)를 지압판(10)에 긴결시키고 지압판 하단은 TSC보 외곽에 접합하며 ;The steel pipe + bolts 7 are tightly connected to the pressure plate 10 by using holes drilled in the outer beams, and the bottom of the pressure plate is joined to the outside of the TSC beams; 상기 외곽보와 건물 내부의 안쪽에도 TSC보를 설치하여 보 내부에 콘크리트를 타설 하는 것을 특징으로 하는 흙막이 합벽과 외곽 보의 이격 공법.Spaced construction between the plywood and the outer beam, characterized in that the concrete is installed in the beam by installing a TSC beam inside the outer beam and the inside of the building.
KR1020050089743A 2005-09-27 2005-09-27 Separating method of Monowall with spandrel girders KR100767953B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101005780B1 (en) * 2008-09-24 2011-01-06 이동희 Underground constructure form system for preventing concretes of underground slab and girder from crack
KR101027921B1 (en) * 2008-09-29 2011-04-12 이동희 Underground constructure form system for preventing concretes of underground slab and girder from crack

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KR101148272B1 (en) 2009-07-08 2012-07-09 이창남 Downward Construction Method of Basement applying SCFSliding Channel Form

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KR100648409B1 (en) * 2002-07-27 2006-11-24 김정민 A method of construction for temporary retaining wall

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101005780B1 (en) * 2008-09-24 2011-01-06 이동희 Underground constructure form system for preventing concretes of underground slab and girder from crack
KR101027921B1 (en) * 2008-09-29 2011-04-12 이동희 Underground constructure form system for preventing concretes of underground slab and girder from crack

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