KR101241960B1 - Strengthen system of rounding precast box - Google Patents

Strengthen system of rounding precast box Download PDF

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KR101241960B1
KR101241960B1 KR1020120065553A KR20120065553A KR101241960B1 KR 101241960 B1 KR101241960 B1 KR 101241960B1 KR 1020120065553 A KR1020120065553 A KR 1020120065553A KR 20120065553 A KR20120065553 A KR 20120065553A KR 101241960 B1 KR101241960 B1 KR 101241960B1
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South Korea
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bar
box
reinforcement
stirrup
curved
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KR1020120065553A
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Korean (ko)
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김명종
최기천
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최기천
김명종
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/045—Underground 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/12—Geometrical or physical properties corrugated
    • 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
    • E02D2300/0034—Steel; Iron in wire form

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Sewage (AREA)

Abstract

PURPOSE: A shear stress reinforcement device of a curve-shaped underground buried prefabricated reinforced concrete box is provided to strengthen the shear strength of corners and improve durability of the reinforced concrete box by arranging wave form bars inside both end parts of a dual stirrup bar. CONSTITUTION: A shear stress reinforcement device of a curve-shaped underground buried prefabricated reinforced concrete box comprises a tension bar(20), an inner side stirrup bar(30), an outer stirrup bar(31), and a wave form bar(40). The inner side stirrup bar is arranged inside the curve-shaped reinforced concrete box(10) in order to reinforce tensile strength. The inner side stirrup bar and the outer stirrup bar are double-arranged in inside and outer parts at a constant interval in order to reinforce shear strength of the tension bar. The wave form bar is arranged for preventing crack propagation in a curved portion in a longitudinal direction of both ends parts between the inner stirrup bar and the outer stirrup bar.

Description

곡선형 지하매설 조립식 철근콘크리트 박스의 전단응력 보강장치 {Strengthen system of Rounding Precast Box} Shear stress reinforcing device for curved underground buried reinforced concrete box {Strengthen system of Rounding Precast Box}

본 발명은 곡선형 지하매설 조립식 철근콘크리트 박스의 전단응력 보강장치 에 관한 것으로, 더욱 바람직하게는 지하의 곡선부에 매설되는 곡선형 철근콘크리트 박스(이하 'Rc박스'라 한다)를 콘크리트로 성형할 때, 인장철근에 일정한 간격을 두고 2중으로 배근되는 스트럽철근의 장방향 양단부, 즉 모서리부에 파형철근을 배근하여 우수, 오수 등이 곡선으로 유도될 때 발생하는 원심력에 의한 강한 수압에도 파손되지 않도록 곡선형 Rc박스의 전단응력과 내하력(耐荷力)을 보강할 수 있도록 하기 위한 것이다.
The present invention relates to a shear stress reinforcement device of a curved underground buried prefabricated reinforced concrete box, and more preferably to form a curved reinforced concrete box (hereinafter referred to as 'Rc box') embedded in a curved portion of the underground In this case, corrugated reinforcement is placed at both ends of the longitudinal direction of the stirrup reinforcement which is double reinforcement at regular intervals to the tensile reinforcing bar, so it is not damaged even by the strong hydraulic pressure caused by centrifugal force generated when rainwater, sewage, etc. are induced into the curve. It is to reinforce the shear stress and load-bearing capacity of curved Rc box.

일반적으로, 도시의 지하 공간에는 배출되는 하수를 하수종말처리장으로 유도하거나 가정으로 전력 및 통신 서비스를 제공하는 케이블을 부설하기 위한 하수구, 전력구, 통신구, 공동구 등이 설치되는데, 도로 등을 파서 매설로를 형성하고, 일정한 장소에서 제작된 프리캐스트 콘크리트인 조립식 Rc(Reinforced concrete)박스를 서로 연결하여 하수구, 전력구, 통신구, 공동구 등을 설치한다.In general, in the underground space of the city, sewers, electric power stations, communication districts, joint districts, etc. are installed to induce discharged sewage to sewage treatment plants or to lay cables providing electric power and communication services to homes. A buried road is formed, and the sewers, electric power holes, communication holes, and joint holes are installed by connecting prefabricated concrete boxes, Rc (reinforced concrete) boxes, which are precast concretes manufactured at a certain place.

이와 같이 하수구, 전력구, 통신구, 공동구 등의 설치에 사용되는 Rc박스는 통상 사각형으로 형성되는데, 내측에 형성된 공간은 케이블 부설이나 하수를 처리하기 위한 수로로 사용된다.As described above, the Rc box used for installation of sewers, power ports, communication ports, and cavity ports is generally formed in a rectangular shape, and the space formed inside is used as a channel for treating cable laying or sewage.

상기와 같이 사각형으로 형성되는 Rc박스는 대부분 직선부에 설치되지만, 곡선부에 설치되는 곡선형 Rc박스는 도 1에 도시한 바와 같이 특허등록 제10-0243437호와 같이 제작된다. Most of the Rc boxes formed in a quadrangle as described above are installed in a straight portion, but a curved Rc box installed in a curved portion is manufactured as in Patent Registration No. 10-0243437 as shown in FIG.

즉 Rc박스 블록(1) 및 (2)을 만들기 위해 기존의 직선부 제품을 생산하는 형틀내에 철근(5)을 배설하고, 상기 Rc박스 블록(1)과 Rc박스 블록(2)의 사이에는 스치로폴(또는 막음판)(4)을 설치하며, Rc박스 전체를 형틀속에서 콘크리트 타설하고, 타설된 Rc박스가 양생후에 굳어지면 스치로폴(4)을 제거하고 Rc박스 블록(1)과 Rc박스 블록(2) 사이의 철근을 절단하여 2개의 블록으로 분리하며, 다음에는 원하는 각도로 경사진 형틀좌우에 Rc박스블록(1)과 Rc박스 블록(2)을 배치시킨 후 형틀속에서 연결부(3)를 콘크리트 타설하여 형성시키게 된다.
In other words, to make the Rc box blocks (1) and (2), the reinforcing bar (5) is disposed in the mold for producing the existing straight part product, and between the Rc box block (1) and the Rc box block (2) Schiropol (Or blocking plate) (4) is installed, and the entire Rc box is concrete-cast in the mold, and when the poured Rc box is hardened after curing, the scolipole (4) is removed and the Rc box block (1) and Rc box block ( 2) Cut the reinforcing bar and separate it into two blocks. Next, place the Rc box block (1) and the Rc box block (2) on the mold left and right inclined at the desired angle. It is formed by pouring concrete.

따라서 종래 곡선형 Rc박스는 Rc박스의 몸체를 이루는 콘크리트의 보강을 위해 내부에 철근을 배근하지만, Rc박스의 모서리부를 보강하기 위한 배근은 이루어지지 못하고 있는 실정이다.Therefore, the conventional curved Rc box reinforces the interior to reinforce the concrete forming the body of the Rc box, but the situation is not made to reinforce the corner portion of the Rc box.

특히 곡선형 Rc박스는 직선형 Rc박스를 통과하는 우수, 오수 등에 의해 원심력이 작용하는 부분이라 모서리부에 엄청난 전단응력이 작용하게 되는데 이를 해결하기 위한 방법이 지금까지 개발된 바 없다.
In particular, the curved Rc box is a part where centrifugal force is applied by rainwater, sewage, etc. passing through the straight Rc box, so that a great shear stress acts on the corners. There has been no method developed to solve this problem.

본 발명은 상기와 같은 문제점을 해결하기 위하여 창출한 것으로, 곡선부에 맞추어 곡선형 Rc박스를 제작할 때, 곡선형 Rc박스의 콘크리트 내부에 일정한 간격을 두고 2중으로 배근되는 스트럽철근에 있어서, 상기 2중의 스트럽철근 장방향 양단부에 안쪽에 파형철근을 배근하여 모서리부의 전단응력을 강화시킴으로써 곡선형 Rc박스의 내구성을 향상시킬 수 있도록 함을 특징으로 한다.
The present invention was created in order to solve the above problems, when manufacturing a curved Rc box according to the curved portion, in the stirrup reinforcement in the double reinforcement at regular intervals inside the concrete of the curved Rc box, It is characterized by improving the durability of the curved Rc box by reinforcing the shear stress at the corner by reinforcing the corrugated reinforcement inside both ends of the double stirrup reinforcement in the longitudinal direction.

이처럼 본 발명은 지하에 매설되는 Rc박스의 곡선형 Rc박스를 제작하되, 2중의 스트럽철근 장방향 양단부에 안쪽에 파형철근을 배근하여 모서리부의 전단응력을 강화시킴으로써 곡선형 Rc박스의 균열방지 및 내구성, 내하력(耐荷力)을 현저히 향상시킬 수 있도록 하는 효과를 가진다.As described above, the present invention manufactures a curved Rc box of an Rc box buried underground, while reinforcing corrugated reinforcement in both ends of a double stirrup reinforcing bar in the longitudinal direction to prevent shear cracking of the curved Rc box. It has the effect of remarkably improving durability and load capacity.

또 본 발명은 2중의 스트럽철근 장방향 양단부에 안쪽에 파형철근을 배근함으로써 콘크리트 두께를 최소화 할 수 있고, 얇고 견고한 곡선형 Rc박스의 제작이 가능해져, 운반과 보관, 설치가 용이한 매우 유용한 발명인 것이다.
In addition, the present invention can minimize the thickness of the concrete by arranging corrugated reinforcement in both ends of the double stirrup reinforcement in the longitudinal direction, it is possible to manufacture a thin and solid curved Rc box, very useful for easy transportation, storage and installation It is an invention.

도 1은 종래 곡선형 Rc박스의 배근 상태를 보이기 위한 참고도.
도 2는 본 발명에 따른 곡선형 Rc박스의 철근이 배근된 상태를 나타낸 사시도.
도 3은 본 발명에 따른 곡선형 Rc박스의 내부에 철근을 배근함에 있어 2중의 스트럽철근 사이에 파형철근을 배근한 상태를 보이기 위한 단면도.1 is a reference diagram for showing the reinforcement state of the conventional curved Rc box.
Figure 2 is a perspective view showing a state in which reinforcement of the curved Rc box according to the present invention.
Figure 3 is a cross-sectional view for showing a state in which the corrugated steel reinforcement between the double stirrup bar in the reinforcement in the interior of the curved Rc box according to the present invention.

본 발명에 따른 곡선용 Rc박스의 구조에 대한 바람직한 실시 예를 참조하여 상세히 설명한다.With reference to the preferred embodiment of the structure of the curved Rc box according to the present invention will be described in detail.

상기와 같은 목적을 갖는 본 발명의 구성을 첨부된 도면에 의거하여 그 구성을 상세하게 설명하면 다음과 같다.The configuration of the present invention having the above object will be described in detail with reference to the accompanying drawings.

본 발명은 지하에 매설되는 Rc박스를 곡선부에 맞추어 콘크리트를 타설하여 양생하는 곡선형 Rc박스(10)에 있어서, 상기 곡선형 Rc박스(10)의 내부에 인장력을 보강하는 인장철근(20)과, 상기 인장철근(20)에 전단력을 보강하기 위해 일정한 간격을 두고 내측부와 외측부에 2중으로 배근되는 내측 스트럽철근(30) 및 외측의 스트럽철근(31)과, 상기 내측 스트럽철근(30)과 외측 스트럽철근(31) 사이의 장방향 양단부에 곡선부의 균열을 방지하기 위하여 파형으로 배근되는 파형철근(40)으로 이루어진다.In the present invention, in the curved Rc box 10 to cure by pouring concrete to the Rc box buried underground to the curved portion, the tensile reinforcing bars 20 to reinforce the tensile force inside the curved Rc box 10 In addition, the inner stirrup reinforcement 30 and the outer stirrup reinforcement 31 and the inner stirrup reinforcement are double reinforcement at regular intervals to reinforce the shear force to the tensile reinforcing bar (20) 30) and a corrugated reinforcement 40 which is corrugated in a wave form to prevent cracking of the curved portion at both ends in the longitudinal direction between the outer stirrup reinforcement 31.

이때 장방향(長方向)) 양단부라 함은 곡선형 Rc박스의 내부에 배근된 스트럽철근에 있어서 상단과 하단을 수평으로 가로지르는 스트럽철근의 양측을 의미한다. 그러나 상기 파형철근(40)이 내측 스트럽철근(30)과 외측 스트럽철근(31)의 네 모서리부에 설치되어도 무방하다. 상기 파형철근(40)은 일정한 경사각으로 절곡하여 다수개의 파형(波形)이 이루어지도록 구성된 철근을 의미한다.In this case, both ends of the longitudinal direction refer to both sides of the stirrup reinforcing bars horizontally across the top and bottom of the stirrup reinforcement in the curved Rc box. However, the corrugated reinforcing bar 40 may be provided at four corners of the inner stirrup bar 30 and the outer stirrup bar 31. The corrugated reinforcing bar 40 refers to a reinforcing bar configured to be bent at a predetermined inclination angle to form a plurality of corrugations.

곡선형 Rc박스(10)를 이루는 콘크리트 내부에는 인장력을 보강하기 위한 인장철근(20)이 배근되고, 또 인장철근(20)에는 전단력을 보강하기 위하여 일정한 간격을 두고 스트럽철근(30)(31)을 배근되어지는데, 상기 곡선부의 보강을 위해 배근되는 스트럽 철근을 각각 내측 스터럽철근(30)과 외측 스트럽철근(31)과 같이 2중으로 배근됨이 바람직하다.In the concrete constituting the curved Rc box 10, a tensile reinforcing bar 20 is reinforced to reinforce tensile force, and the reinforcing bar 20 is provided with a stirrup reinforcing bar 30 and 31 at regular intervals to reinforce shear force. It is preferable that the stirrups to be reinforced for the reinforcement of the curved portion are doubled, such as the inner stirrup reinforcement 30 and the outer stirrup reinforcement 31, respectively.

이때 상기 내측 스트럽철근(30)과 외측 스트럽철근(31)의 모서리 부분에 파형철근(40)을 배근하게 되는데, 특히 파형철근(40)은 내측 및 외측 스트럽철근(30)(31)의 장방형 단부측에 배근함이 바람직하다.At this time, the corrugated reinforcement 40 is placed at the corners of the inner stirrup reinforcement 30 and the outer stirrup reinforcement 31, in particular, the corrugated reinforcement 40 is the inner and outer stirrup reinforcement 30, 31. It is preferable to be close to the rectangular end side of the side.

상기 파형철근(40)은 내측 스트럽철근(30)과 외측 스트럽철근(31)의 안쪽에 용접 또는 결속선으로 결합하여 일체가 되도록 고정되도록 한다.The corrugated reinforcement 40 is fixed to be integrally welded or bonded to the inner side of the inner stirrup reinforcement 30 and the outer stirrup reinforcement 31 by a bond line.

상기와 같이 콘크리트 내부의 전단력을 보강하기 위해 배근되는 내측 스트럽철근(30)과 외측 스트럽철근(31) 사이에 파형철근(40)을 배근하여 절곡되는 절곡부에 의해 서로 스트럽철근(30)(31)을 지지하여 보강해주기 때문에 곡선형 Rc박스의 내부에 오수와 우수 등의 원심력에 의해 발생하는 모서리부의 전단응력을 최대한 보강할 수 있는 것이다.
As described above, the stirrup reinforcement 30 is formed by bending portions that are bent by reinforcing the corrugated reinforcement 40 between the inner stirrup reinforcement 30 and the outer stirrup reinforcement 31 to reinforce the shear force inside the concrete. (31) to support and reinforcement will be able to reinforce the shear stress of the edge portion generated by the centrifugal force such as sewage and rainwater inside the curved Rc box to the maximum.

상기한 바와 같은 구성을 갖는 본 발명이 비록 한정된 실시예에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술사상과 아래에 기재될 청구범위의 균등범위 내에서 다양한 수정 및 변형이 가능하다 할 것이다.Although the present invention having the configuration as described above has been described by a limited embodiment, the present invention is not limited by this and the technical spirit of the present invention and the following by those skilled in the art to which the present invention belongs. Various modifications and variations are possible within the scope of equivalents of the claims to be described.

10. 곡선형 Rc박스 11. 돌출턱
12. 와이어 삽입홀 13. 경사면
20. 인장철근 30, 31. 스트럽철근
40. 파형철근 50. 와이어10. Curved Rc Box 11. Protruding Jaw
12. Wire Insertion Hole 13. Slope
20. Tension bar 30, 31. Stirrup bar
40. Corrugated Reinforcement 50. Wire

Claims (1)

지하에 매설되는 Rc박스를 곡선부에 맞추어 콘크리트를 타설하여 양생하는 곡선형 Rc박스(10)에 있어서,
상기 곡선형 Rc박스(10)의 내부에 인장력을 보강하는 인장철근(20)과,
상기 인장철근(20)에 전단력을 보강하기 위해 일정한 간격을 두고 내측부와 외측부에 2중으로 배근되는 내측 스트럽철근(30) 및 외측의 스트럽철근(31)과,
상기 내측 스트럽철근(30)과 외측 스트럽철근(31) 사이에 파형으로 배근되어 곡선부의 균열을 방지하는 파형철근(40)을 배치하되 상기 파형철근(40)은 내측 스트럽철근(30)과 외측 스트럽철근(31)의 네 모서리부에 수평으로 형성되도록 구성됨을 특징으로 하는 곡선형 Rc박스의 보강장치.
In the curved Rc box 10 to cure by pouring concrete in accordance with the Rc box buried underground,
Tensile reinforcing bars 20 to reinforce the tensile force inside the curved Rc box 10,
The inner stirrup reinforcement 30 and the outer stirrup reinforcement 31 which are doubled in the inner side and the outer side at regular intervals to reinforce the shearing force in the tensile reinforcing bar 20,
The corrugated rebar 40 is disposed between the inner stirrup reinforcement 30 and the outer stirrup reinforcement 31 to prevent cracking of the curved portion, but the corrugated reinforcement 40 is the inner stirrup reinforcement 30. Reinforcing device of the curved Rc box, characterized in that configured to be formed horizontally on the four corners of the outer and outer stirrups (31).
KR1020120065553A 2012-06-19 2012-06-19 Strengthen system of rounding precast box KR101241960B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000273939A (en) 1999-03-24 2000-10-03 Ishikawajima Constr Materials Co Ltd Culvert construction method
JP2007146641A (en) 2005-11-07 2007-06-14 Kcon Kk Structure of joining part of precast concrete member, precast concrete assembly structure with the joining part, and method of forming the structure
JP2008223370A (en) 2007-03-14 2008-09-25 Haneda Concrete Industrial Co Ltd Rigidly connecting structure of corner part
JP2009243139A (en) 2008-03-31 2009-10-22 Railway Technical Res Inst Box culvert

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000273939A (en) 1999-03-24 2000-10-03 Ishikawajima Constr Materials Co Ltd Culvert construction method
JP2007146641A (en) 2005-11-07 2007-06-14 Kcon Kk Structure of joining part of precast concrete member, precast concrete assembly structure with the joining part, and method of forming the structure
JP2008223370A (en) 2007-03-14 2008-09-25 Haneda Concrete Industrial Co Ltd Rigidly connecting structure of corner part
JP2009243139A (en) 2008-03-31 2009-10-22 Railway Technical Res Inst Box culvert

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