KR20120071913A - Apparatus for introducing stress - Google Patents

Apparatus for introducing stress Download PDF

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Publication number
KR20120071913A
KR20120071913A KR1020100133643A KR20100133643A KR20120071913A KR 20120071913 A KR20120071913 A KR 20120071913A KR 1020100133643 A KR1020100133643 A KR 1020100133643A KR 20100133643 A KR20100133643 A KR 20100133643A KR 20120071913 A KR20120071913 A KR 20120071913A
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KR
South Korea
Prior art keywords
tension
sheath tube
cylindrical body
sheath pipe
spaces
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KR1020100133643A
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Korean (ko)
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KR101274988B1 (en
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조우연
김진국
이필구
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재단법인 포항산업과학연구원
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Priority to KR20100133643A priority Critical patent/KR101274988B1/en
Publication of KR20120071913A publication Critical patent/KR20120071913A/en
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    • 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
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
    • 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
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing

Abstract

PURPOSE: A tension applying device is provided to prevent multiple tendons from getting twisted each other inside a sheath pipe by forming individual spaces for each tendon inside the sheath pipe. CONSTITUTION: A tension applying device comprises a sheath pipe(110), multiple tendons(120), and an anchorage. The sheath pipe is composed of a cylindrical body(111) and compartment units(112). The compartment units divide the inside the cylindrical body into multiple spaces(112a). The tendons are inserted into the spaces of the cylindrical body. The anchorage is buried in a pre-stressed concrete structure and is connected to the sheath pipe to guide the tendons located inside the sheath pipe to the outside.

Description

긴장도입장치{APPARATUS FOR INTRODUCING STRESS}Tension Induction Device {APPARATUS FOR INTRODUCING STRESS}

본 발명은 긴장도입장치에 관한 것이며, 상세하게는 쉬스관 내부에 복수 개의 긴장재가 개별적으로 삽입될 수 있는 공간을 형성하여 복수 개의 긴장재 상호 간의 엉킴으로 인한 간섭을 방지하고 긴장재에 균일한 하중을 적용할 수 있는 긴장도입장치에 관한 것이다.The present invention relates to a tension introduction device, and in detail, a space in which a plurality of tension members can be individually inserted in the sheath tube to prevent interference due to entanglement between the plurality of tension members and apply a uniform load to the tension members. It is about tension introduction device which can be done.

일반적으로, 프리스트레스 콘크리트 구조물은 인장력에 취약한 콘크리트에 선압축력을 가하여 단면 하부 인장구역에도 압축상태를 유지하도록 하여 콘크리트 거더 또는 보의 강도와 강성을 증가시킬 수 있는 구조물이다. In general, the prestressed concrete structure is a structure that can increase the strength and rigidity of the concrete girder or beam by applying a pre-compression force to the concrete vulnerable to the tensile force to maintain the compression state in the lower tension section.

프리스트레스를 콘크리트에 주는 방법에는 프리텐셔닝(pretensioning) 공법과 포스트텐셔닝(posttensioning) 공법이 있다. Prestressing methods include pretensioning and posttensioning.

여기서, 프리텐셔닝 공법은 긴장재에 인장력을 준 상태에서 콘크리트를 타설하여 경화한 후 긴장재의 양단부를 벗겨 콘크리트에 압축력으로서 부담을 시키는 공법이다.Here, the pre-tensioning method is a method in which the concrete is placed in a state in which tension is applied to the tension member, and then hardened by peeling both ends of the tension member to impose a burden on the concrete as a compressive force.

반면, 포스트텐셔닝 공법은 콘크리트가 경화된 후 사전에 만들어 둔 쉬스관에 긴장재를 넣어 잡아당겨 긴장재의 양단을 콘크리트 부재 단부에 고정하는 공법이다. On the other hand, the post-tensioning method is a method of fixing both ends of the tension member to the end of the concrete member by pulling the tension material in the sheath pipe made in advance after the concrete is cured.

포스트텐셔닝 공법은 조립 철근 사이로 긴장재가 통과하는 쉬스관을 배치하고, 콘크리트 타설 후 긴장재를 정착구에 정착하는 단계를 포함한다.The post-tensioning method includes placing a sheath tube through which the tension material passes between the reinforcing bars, and fixing the tension material to the anchorage after placing the concrete.

다만, 포스크텐셔닝 공법은 다음과 같은 문제점을 가지고 있다.However, the pose-tensioning method has the following problems.

우선, 도 1a에 도시된 바와 같이, 종래기술에서는 긴장재에 포스트텐션을 하기 위해서 긴장재가 쉬스관에 설치된 후, 적정한 길이로 긴장한 후 정착구에 고정되는 방식이 사용되는데, 이러한 방식은 긴장재에 균일한 긴장력을 얻기 어렵다.First, as shown in Figure 1a, in order to post-tension the tension member in the prior art is used after the tension member is installed in the sheath tube, the tension to the appropriate length and then fixed to the anchorage, this method is a uniform tension force in the tension member Difficult to get.

그리고, 긴장재에 균일한 긴장력을 부여하기 위해서는 쉬스관에 삽입되는 각각의 긴장재의 장력을 개별적으로 측정하고, 긴장단계에서 각각의 긴장재마다 장력을 조정하여야 하는데, 이러한 과정은 많은 비용을 발생시킨다.In addition, in order to give uniform tension to the tension member, the tension of each tension member inserted into the sheath tube must be measured separately, and the tension must be adjusted for each tension member in the tensioning step.

도 1b에 도시된 바와 같이, 쉬스관(10)은 긴장재(20)가 삽입되는 공간으로서, 쉬스관(10) 내부로 삽입된 복수 개의 긴장재(20)들은 상호 간에 서로 엉켜 간섭이 생길 수 있다. 더불어, 쉬스관 중앙부가 쳐짐에 따라, 쉬스관 중앙부에 위치된 긴장재(20)에 균일한 긴장력을 부여하기는 어려운 실정이다.
As shown in FIG. 1B, the sheath tube 10 is a space into which the tension member 20 is inserted, and the plurality of tension members 20 inserted into the sheath tube 10 may be entangled with each other to cause interference. In addition, as the center of the sheath tube is drooping, it is difficult to give a uniform tension to the tension member 20 positioned at the center of the sheath tube.

따라서, 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 본 발명은 쉬스관으로 삽입되는 긴장재마다 쉬스관 내부에 개별적인 공간을 부여함으로써 쉬스관 내부에서의 긴장재의 꼬임을 방지할 수 있는 긴장도입장치를 제공하는 것을 목적으로 한다.Therefore, the present invention has been made to solve the above problems, the present invention is to provide a separate space inside the sheath tube for each tension material inserted into the sheath tube tension that can prevent the twisting of the tension material in the sheath tube. It is an object to provide an introduction device.

더불어, 본 발명은 쉬스관에 설치되는 긴장재마다 쉬스관 내부에 공간을 개별적인 공간을 부여함으로써, 쉬스관의 처짐시에도 긴장재에 균일한 하중이 부여되도록 유도할 수 있는 긴장도입장치를 제공하는 것을 목적으로 한다. In addition, an object of the present invention is to provide a tension introduction device that can induce a uniform load is applied to the tension material even when the sheath pipe sag by providing a separate space inside the sheath pipe for each tension material installed in the sheath pipe. It is done.

본 발명의 일 실시예에 따른 긴장도입장치는 프리스트레스 콘크리트 구조물 내부에 설치되며, 내부가 복수 개의 공간으로 구획된 쉬스관; 쉬스관 내부의 구획된 공간으로 개별적으로 삽입되어 위치된 복수 개의 긴장재; 및 프리스트레스 콘크리트 구조물의 일단에 위치되고 쉬스관에 연계되어, 긴장재가 외부로 노출되도록 긴장재를 안내토록 제공된 정착구를 포함하는 것이 바람직하다. Tension introduction device according to an embodiment of the present invention is installed inside the prestressed concrete structure, the sheath pipe is divided into a plurality of spaces; A plurality of tension members individually inserted into the partitioned spaces inside the sheath tube; And an anchorage positioned at one end of the prestressed concrete structure and associated with the sheath tube, the anchorage being provided to guide the tensioner to expose the tensioner to the outside.

본 발명의 일 실시예에 따른 쉬스관은 내부가 중공된 원통형 몸체; 및 원통형 몸체에 삽입되어, 원통형 몸체 내부에 복수 개의 공간이 형성되도록 제공된 구획유닛을 포함하는 것이 바람직하다.Sheath tube according to an embodiment of the present invention is a hollow cylindrical body inside; And a partition unit inserted into the cylindrical body so that a plurality of spaces are formed in the cylindrical body.

본 발명의 일 실시예에서, 쉬스관은 격자형 단면을 가지는 것이 바람직하다. In one embodiment of the invention, the sheath tube preferably has a lattice cross section.

본 발명은 본 발명은 쉬스관으로 삽입되는 긴장재마다 쉬스관 내부에 개별적인 공간을 부여함으로써 쉬스관 내부에서의 긴장재의 꼬임을 방지할 수 있다. The present invention can prevent the twisting of the tension member in the sheath tube by providing a separate space inside the sheath tube for each tension member inserted into the sheath tube.

더불어, 본 발명은 쉬스관에 설치되는 긴장재마다 쉬스관 내부에 공간을 개별적인 공간을 부여함으로써, 쉬스관의 처짐시에도 긴장재에 균일한 하중이 부여되도록 유도할 수 있다. In addition, the present invention by providing a separate space in the sheath tube for each tension member installed in the sheath tube, it can be induced to be applied to the tension member even when the sheath tube sag.

도 1a는 프리스트레스 콘크리트 구조물에 쉬스관이 설치된 상태도를 개략적으로 도시한 것이다.
도 1b는 종래기술에 따른 쉬스관 및 긴장재의 연결상태를 개략적으로 도시한 상태도이다.
도 2a는 본 발명의 일 실시예에 따라 프리스트레스 콘크리트 구조물에 쉬스관이 설치된 상태도를 개략적으로 도시한 것이다.
도 2b는 본 발명의 일 실시예에 따른 긴장도입장치의 쉬스관과 긴장재의 연결상태를 개략적으로 도시한 것이다. 1a schematically illustrates a state diagram in which a sheath tube is installed in a prestressed concrete structure.
Figure 1b is a state diagram schematically showing the connection state of the sheath tube and the tension member according to the prior art.
2a schematically illustrates a state diagram in which a sheath tube is installed in a prestressed concrete structure according to an embodiment of the present invention.
Figure 2b schematically shows a connection state of the sheath tube and the tension member of the tension introduction device according to an embodiment of the present invention.

이하에서는 첨부 도면을 참조하여 본 발명의 실시예에 따른 긴장도입장치에 대해 상세하게 설명하기로 한다.
Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the tension introduction device according to an embodiment of the present invention.

도 2a에 도시된 바와 같이, 본 발명의 일 실시예에 따른 긴장도입장치(100)는 프리스트레스 콘크리트 구조물(101)에 설치되는 것이다.As shown in Figure 2a, the tension introduction device 100 according to an embodiment of the present invention is to be installed in the prestressed concrete structure (101).

본 발명의 일 실시예에 따른 긴장도입장치(100)는 쉬스관(110), 쉬스관(110) 내부로 삽입되어 설치되는 복수 개의 긴장재(120), 및 프리스트레스 콘크리트 구조물(101)의 일단에 긴장재(120)가 고정되도록 제공된 정착구(130)를 포함하는 것이 바람직하다.Tension introduction device 100 according to an embodiment of the present invention is a sheath pipe 110, a plurality of tension material 120 is inserted into the sheath pipe 110 is installed, and the tension material at one end of the prestressed concrete structure (101) It is preferable to include a fixing unit 130 provided so that the 120 is fixed.

도 2b에 도시된 바와 같이, 본 발명의 일 실시예에 따른 쉬스관(110)은 내부가 중공된 원통형 몸체(111)와 원통형 몸체(111)에 삽입되도록 제공된 구획유닛(112)으로 이루어진다. As shown in Figure 2b, the sheath tube 110 according to an embodiment of the present invention consists of a hollow cylindrical body 111 and the partition unit 112 provided to be inserted into the cylindrical body 111.

본 발명의 일 실시예에서, 구획유닛(112)은 원통형 몸체(111) 내부에 복수 개의 공간(112a)이 형성되도록 제공된 것이다. 이에 따라, 본 발명의 일 실시예에 따른 쉬스관(110)은 내부가 복수 개의 공간(112a)으로 구획된 격자형 단면을 가지는 것이 바람직하다. In one embodiment of the present invention, the partition unit 112 is provided so that a plurality of spaces 112a are formed in the cylindrical body 111. Accordingly, the sheath tube 110 according to an embodiment of the present invention preferably has a grid-shaped cross section in which the inside is divided into a plurality of spaces 112a.

한편, 본 발명의 일 실시예에서, 복수 개의 긴장재(120)는 쉬스관(110) 내에 형성된 복수 개의 공간(112a) 중 어느 하나의 공간(112a)으로 각각 삽입되어 위치될 수 있다. Meanwhile, in one embodiment of the present invention, the plurality of tension members 120 may be inserted into and positioned in any one space 112a of the plurality of spaces 112a formed in the sheath tube 110.

이에 따라, 본 발명의 일 실시예에서, 복수 개의 긴장재(120)는 구획유닛(112)으로 인해 쉬스관(110) 내부에서의 상호 간의 엉킴으로 인한 간섭이 방지된다.Accordingly, in one embodiment of the present invention, the plurality of tension member 120 is prevented due to the entanglement between each other in the sheath tube 110 due to the partition unit 112.

더불어, 본 발명의 일 실시예에 따른 긴장도입장치(100)는 쉬스관(110) 내부에 개별적으로 구획된 복수 개의 공간(112a)을 구비하고, 이들 공간(112a)마다 개별적인 긴장재(120)를 삽입시킴으로써, 쉬스관(110)의 중앙부의 처짐시에도 긴장재(120)에 균일한 하중이 부여되도록 할 수 있다. In addition, the tension introduction device 100 according to an embodiment of the present invention includes a plurality of spaces 112a separately partitioned inside the sheath tube 110, and each of the spaces 112a includes an individual tension member 120. By inserting, even when the center part of the sheath pipe 110 sags, a uniform load can be applied to the tension member 120.

이에 따라, 본 발명의 일 실시예에 따른 긴장도입장치(100)는 별도의 추가장비 없이도 쉬스관(110)의 형상을 상기와 같이 변경함으로써 쉬스관(110)에 설치된 긴장재(120)에 균일한 하중이 적용되도록 할 수 있다.Accordingly, the tension introduction device 100 according to an embodiment of the present invention is uniform in the tension member 120 installed in the sheath tube 110 by changing the shape of the sheath tube 110 as described above without additional equipment. The load can be applied.

한편, 도 2b에 도시된 바와 같이, 쉬스관(110) 내부의 격자형으로 구획된 공간(112a)으로 삽입된 복수 개의 긴장재(120)는 정착구(130)를 통해 프리스트레스 콘크리트 구조물(101)에 고정된다. Meanwhile, as shown in FIG. 2B, the plurality of tension members 120 inserted into the lattice-shaped space 112a inside the sheath tube 110 are fixed to the prestressed concrete structure 101 through the fixing unit 130. do.

본 발명의 일 실시예에서, 정착구(130)는 프리스트레스 콘크리트 구조물(101)에 매설되어 프리스트레스 콘크리트 구조물(101)의 쉬스관(110)에 연계되어, 쉬스관(110) 내에 위치된 긴장재(120)를 외부로 안내하는 부재이다. In one embodiment of the present invention, the anchorage 130 is embedded in the prestressed concrete structure 101 is connected to the sheath tube 110 of the prestressed concrete structure 101, the tension member 120 located in the sheath tube 110 It is a member to guide the outside.

정착구(130)와 쉬스관(110)은 끼움결합방식, 나사결합방식 등 다양한 방식이 사용될 수 있는 바, 본 발명의 일 실시예에서는 정착구(130)와 쉬스관(110)의 연결방식에 대해 특별하게 한정하지 않기로 한다. The fixing unit 130 and the sheath tube 110 can be used in a variety of ways, such as fitting method, screw coupling method, in one embodiment of the present invention is special for the connection method of the fixing unit 130 and the sheath tube 110 I will not limit it.

본 발명의 일 실시예에서, 정착구(130)는 내부가 중공된 실린더 형상을 가지며, 프리스트레스 콘크리트 구조물(101)에 매설시 프리스트레스 콘크리트 구조물(101)에서 이탈을 방지토록, 콘크리트에 매설된 정착구(130)의 일단에서 콘크리트에 매설되지 않은 정착구(130)의 타단으로 갈수록 직경이 커지는 형상을 가진다. 그리고, 정착구(130)의 타단에는 앵커헤드가 설치되어, 긴장재(120)를 정착구(130)에 고정한다.
In one embodiment of the present invention, the fixing unit 130 has a hollow cylindrical shape, when buried in the prestressed concrete structure 101 to prevent the escape from the prestressed concrete structure 101, embedded in the anchorage 130 At one end of the) has a shape that increases in diameter toward the other end of the fixing unit 130 is not embedded in concrete. An anchor head is installed at the other end of the fixing unit 130 to fix the tension member 120 to the fixing unit 130.

위에 설명된 예시적인 실시예는 제한적이기보다는 본 발명의 모든 관점들 내에서 설명적인 것이 되도록 의도되었다. 따라서 본 발명은 본 기술 분야의 숙련된 자들에 의하여 본 명세서 내에 포함된 설명들로부터 얻어질 수 있는 많은 변형 및 상세한 실행이 가능하다. 다음의 청구범위에 의하여 한정된 바와 같이 이러한 모든 변형 및 변경은 본 발명의 범위 및 사상 내에 있는 것으로 고려되어야 한다.
The illustrative embodiments described above are intended to be illustrative within all aspects of the invention rather than limiting. Accordingly, the present invention is capable of many modifications and detailed implementations which may be obtained from those contained within the specification by those skilled in the art. All such modifications and variations are considered to be within the scope and spirit of the invention as defined by the following claims.

100: 긴장도입장치 110: 쉬스관
120: 긴장재 130: 정착구100: tension introduction device 110: sheath tube
120: tension member 130: anchorage

Claims (3)

프리스트레스 콘크리트 구조물 내부에 설치되며, 내부가 복수 개의 공간으로 구획된 쉬스관;
상기 쉬스관 내부의 구획된 공간으로 개별적으로 삽입되어 위치된 복수 개의 긴장재; 및
상기 프리스트레스 콘크리트 구조물의 일단에 위치되고 상기 쉬스관에 연계되어, 상기 긴장재가 외부로 노출되도록 상기 긴장재를 안내토록 제공된 정착구;
를 포함하는 것을 특징으로 하는 긴장도입장치.
A sheath pipe installed inside the prestressed concrete structure and having a plurality of spaces defined therein;
A plurality of tension members individually inserted and positioned into the partitioned space inside the sheath tube; And
A fixing device positioned at one end of the prestressed concrete structure and connected to the sheath tube to provide the tension member to guide the tension member to the outside;
Tension introducing device comprising a.
제 1 항에 있어서, 상기 쉬스관은
내부가 중공된 원통형 몸체; 및
상기 원통형 몸체에 삽입되어, 상기 원통형 몸체 내부에 복수 개의 공간이 형성되도록 제공된 구획유닛;
을 포함하는 것을 특징으로 하는 긴장도입장치.
According to claim 1, wherein the sheath tube
A hollow cylindrical body; And
A partition unit inserted into the cylindrical body and provided to form a plurality of spaces in the cylindrical body;
Tension introducing device comprising a.
제 2 항에 있어서,
상기 쉬스관은 격자형 단면을 가지는 것을 특징으로 하는 긴장도입장치.The method of claim 2,
The sheath tube is a tension introduction device, characterized in that it has a grid-shaped cross section.
KR20100133643A 2010-12-23 2010-12-23 Apparatus for introducing stress KR101274988B1 (en)

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KR102527859B1 (en) 2022-11-02 2023-05-02 주식회사 하영이앤씨 Steel composite girder for preventing deformation of inner hollowness and compact placing of infilled concrete

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JPS575373Y2 (en) * 1976-02-19 1982-02-01
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KR20090021322A (en) * 2008-05-02 2009-03-03 (주)유진기업 Protecting holder for wire of prestressed concrete girder and inserting method of wire using this

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KR102404761B1 (en) 2021-11-08 2022-06-07 주식회사 하영이앤씨 Steel composite girder with buoyance prevention member for preventing buoyance of inner hollowness, and construction method for the same
KR102527859B1 (en) 2022-11-02 2023-05-02 주식회사 하영이앤씨 Steel composite girder for preventing deformation of inner hollowness and compact placing of infilled concrete

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