KR20130102163A - Concrete girder for upper structure of bridge - Google Patents

Concrete girder for upper structure of bridge Download PDF

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KR20130102163A
KR20130102163A KR1020120023161A KR20120023161A KR20130102163A KR 20130102163 A KR20130102163 A KR 20130102163A KR 1020120023161 A KR1020120023161 A KR 1020120023161A KR 20120023161 A KR20120023161 A KR 20120023161A KR 20130102163 A KR20130102163 A KR 20130102163A
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South Korea
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anchor
bolt
concrete
anchor plate
post
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KR1020120023161A
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Korean (ko)
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KR101535180B1 (en
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민지훈
황용선
유재석
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아이씨비 주식회사
한국씨엠이엔지(주)
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete

Abstract

PURPOSE: A concrete girder for the upper structure of a bridge is provided to facilitate the tensile reinforcement of a concrete member and to prevent the rigidity degradation of a post tensile reinforcing material due to corrosion. CONSTITUTION: A concrete girder (11) for the upper structure of a bridge comprises a concrete member and a post tensile reinforcing anchor (30) embedded into the concrete member. The post tensile reinforcing anchor includes an anchor plate, a bolt fastening column, and an anchor bolt. The bolt fastening column is formed on the bottom of the anchor plate and is formed with bolt grooves in the longitudinal direction. The anchor bolt is joined to the bolt fastening column to be screwed to a bolt groove. The anchor bolt is embedded into the concrete member with the head exposed to the outer surface of the concrete member.

Description

교량상부구조용 콘크리트거더{Concrete Girder for Upper Structure of Bridge}Concrete Girder for Upper Structure of Bridge

본 발명은 교량상부구조용 콘크리트거더에 관한 것으로서, 보다 상세하게는 유지보수단계에서 인장을 보강할 때 인장보강재를 고정하기 위한 구조를 갖는 교량상부구조용 콘크리트거더에 관한 것이다.The present invention relates to a concrete girder for bridge superstructure, and more particularly to a concrete girder for bridge superstructure having a structure for fixing the tension reinforcement when reinforcing the tension in the maintenance step.

교량구조에서 하중을 받는 구조물의 하나로 거더가 사용되고 있으며, 거더의 재질로는 강재와 콘크리트가 주로 사용되고 있다.Girder is used as one of the structures under load in the bridge structure, and steel and concrete are mainly used as the material of the girder.

콘크리트는 재료가 저렴하고 성형성이 좋으며 진동에 유리하고 압축에 강한 반면 인장에는 매우 약하다는 단점이 있다.Concrete has the disadvantage that the material is inexpensive, formable, favorable to vibration, resistant to compression, and very weak in tension.

이러한 콘크리트 재질의 특성상 콘크리트로 제작된 거더(이하 "교량상부구조용 콘크리트거더"라고 함)와 같이 압축과 인장이 함께 발생하는 휨을 받는 구조의 경우에는 인장에 대한 보강이 필요하다.Due to the characteristics of the concrete material, a reinforced structure is required in the case of a structure that is subjected to the bending and compression that occurs together, such as girder made of concrete (hereinafter referred to as "concrete girder for bridge superstructure").

교량상부구조용 콘크리트거더에 대한 인장보강방법의 하나로 콘크리트부재의 인장영역에 미리 압축의 스트레스를 도입하여 인장 측의 콘크리트를 유효하게 사용하는 프리스트레스트 교량상부구조용 콘크리트거더(Prestressed Concrete Girder)가 안출되어 사용되고 있다.Prestressed Concrete Girder is used as a method of tension reinforcement for the concrete structure girder for bridge superstructures. have.

도11은 종래 교량상부구조용 콘크리트거더의 전체 구성도이고, 도12는 종래 프리인장보강부의 상세도이다.FIG. 11 is a general configuration diagram of a concrete girder for a bridge upper structure, and FIG. 12 is a detailed view of a conventional pre-tension reinforcement part.

종래의 교량상부구조용 콘크리트거더는, 이들 도면에 도시된 바와 같이, 콘크리트부재(111)와, 콘크리트부재(111)에 설치된 프리인장보강부(120) 및 포스트인장보강부(140)를 갖고 있다.The conventional concrete girder for bridge superstructures has a concrete member 111, a pretension reinforcement portion 120 and a post tensile reinforcement portion 140 provided on the concrete member 111, as shown in these figures.

콘크리트부재(111)는 직선상으로 형성된다.Concrete member 111 is formed in a straight line.

프리인장보강부(120)는 콘크리트부재(111)의 양단에 동일개수로 분산되고 각각 외부로 노출되도록 설치된 프리인장보강정착구(121)와, 콘크리트부재(111)의 길이방향을 따라 배치되도록 콘크리트부재(111)에 매립된 프리인장보강보호관(122)과, 프리인장보강보호관(122)을 통과하고 양단이 프리인장보강정착구(121)에 긴장상태로 결합되도록 설치된 프리인장보강재(123)를 갖고 있다.The pre-tension reinforcement unit 120 is distributed in the same number on both ends of the concrete member 111 and the pre-tension reinforcement anchorage 121 is installed so as to be exposed to the outside, respectively, and the concrete member to be disposed along the longitudinal direction of the concrete member 111 The pre-tension reinforcement protection tube 122 embedded in the (111) and the pre-tension reinforcement protection tube 122 and the pre-tension reinforcement 123 is installed so that both ends are coupled to the pre-tension reinforcement anchorage 121 in a tension state. .

프리인장보강정착구(121)는 프리인장정착구바디부(121a), 프리인장쐐기(121b) 등을 사용하여 구현할 수 있다. 이러한 프리인장보강정착구(121)의 구조에 대해서는 종래 널리 알려져 있으므로 상세한 설명은 생략하기로 한다.The pre-tension reinforcing anchor 121 may be implemented using a pre-tensioning anchor body 121a, a pre-tension wedge 121b, or the like. Since the structure of the pre-tension reinforcing anchorage 121 is widely known in the art, a detailed description thereof will be omitted.

프리인장보강보호관(122)으로는 쉬스관(Sheath Pipe) 등을 사용할 수 있다.As the pre-tension reinforcement protective tube 122, a sheath pipe may be used.

프리인장보강재(123)로는 피씨(PC)강선 등을 사용할 수 있다. 피씨(PC)강선은 종단에서 다수개의 가닥으로 나뉘어 프리인장보강정착구(121)에 결합된다.As the pre-tension reinforcing material 123, PC steel wire or the like may be used. PC steel wire is divided into a plurality of strands at the end is coupled to the pre-tension reinforcement anchorage (121).

이러한 구성을 갖는 프리인장보강재(123)는 잭(Jack) 등을 사용하여 긴장시킨 후, 프리인장보강보호관(122)의 내부에 시멘트페이스트(Cement Paste) 등을 설치하는 그라우팅작업에 의해 프리인장보강보호관(122)의 내부에서 긴장상태를 유지한다.The pre-tension reinforcement 123 having such a configuration is tensioned by using a jack, etc., and then pretension-reinforced by grouting to install cement paste or the like in the pre-tension reinforcement protective tube 122. The tension is maintained inside the protective tube 122.

본 명세서에서는 콘크리트부재(111)를 형성할 때 프리인장보강재(123)를 긴장시킨다는 의미로 프리인장(Pre-Tension)이라는 용어를 사용한다.In this specification, the term pre-tension is used to mean tensioning the pre-tension reinforcement 123 when the concrete member 111 is formed.

포스트인장보강부(140)는 콘크리트부재(111)의 길이방향을 따라 배치되도록 콘크리트부재(111)에 매립된 포스트인장보강보호관과, 포스트인장보강보호관을 통과하도록 설치된 포스트인장보강재를 갖고 있다.The post tensile reinforcement unit 140 has a post tensile reinforcement protective tube embedded in the concrete member 111 so as to be disposed along the longitudinal direction of the concrete member 111, and a post tensile reinforcement member installed to pass through the post tensile reinforcement protective tube.

포스트인장보강보호관으로는 쉬스관(Sheath Pipe) 등을 사용할 수 있다.As a post tensile reinforcement protective tube, a sheath pipe or the like can be used.

포스트인장보강재로는 피씨(PC)강선을 사용할 수 있다.PC steel wire can be used as post tensile reinforcement material.

이러한 구성을 갖는 포스트인장보강재는 콘크리트부재(111)를 형성한 후 유지보수단계에서 사후적으로 필요할 때 다음과 같은 방법으로 긴장시킨다.Post tensile reinforcing material having such a configuration is tensioned in the following way when necessary after the maintenance step after the concrete member 111 is formed.

먼저 프리인장보강정착구(121)와 동일한 구조를 갖는 포스트인장보강정착구를 콘크리트부재(111)의 양단에 설치한다.First, post tensile reinforcing fixing fittings having the same structure as the pre-tension reinforcing fixing fitting 121 are installed at both ends of the concrete member 111.

다음에 잭(Jack) 등을 사용하여 포스트인장보강재를 긴장시킨다.Next, use a jack or the like to strain the post tensile reinforcement.

다음에 긴장상태로 포스트인장보강재의 양단을 포스트인장보강정착구에 결합시킨다.Next, both ends of the post tensile reinforcement are joined to the post tensile reinforcing anchorage in tension.

마지막으로 포스트인장보강보호관의 내부에 시멘트페이스트(Cement Paste) 등을 설치하는 그라우팅작업에 의해 포스트인장보강보호관의 내부에서 포스트인장보강재의 긴장상태를 유지한다.Finally, the tension of the post tension reinforcement is maintained in the post tension reinforcement protection tube by grouting work to install cement paste in the post tension reinforcement protection tube.

본 명세서에서는 콘크리트부재(111)를 형성한 후 유지보수단계에서 사후적으로 필요할 때 포스트인장보강재을 긴장시킨다는 의미로 포스트인장(Post-Tension)이라는 용어를 사용한다.In the present specification, after the concrete member 111 is formed, the term post-tension is used to mean that the post-tension reinforcement is tensioned when necessary after the maintenance step.

그런데 종래의 교량상부구조용 콘크리트거더에 따르면, 포스트인장보강보호관의 내부에서 포스트인장보강재를 긴장시켜야 하기 때문에 콘크리트부재(111)에 대한 인장 보강작업이 어렵다는 문제점이 있었다.However, according to the conventional concrete girder for the bridge upper structure, there is a problem that the tension reinforcement for the concrete member 111 is difficult because the post tension reinforcement to tension inside the post tension reinforcement protective tube.

그리고 포스트인장보강재가 콘크리트부재(111)를 형성될 때 설치되기 때문에 유지보수단계에서 포스트인장보강재를 선택할 수 없고 포스트인장보강재의 부식에 따른 강도저하가 발생한다는 문제점이 있었다.And since the post tensile reinforcing material is installed when the concrete member 111 is formed, there is a problem in that the post tensile reinforcing material cannot be selected in the maintenance step and the strength decrease due to the corrosion of the post tensile reinforcing material occurs.

또한 콘크리트부재(111)가 형성될 때 포스트인장보강재가 설치되기 때문에 초기설비용이 증가한다는 문제점이 있었다.In addition, since the post tensile reinforcing material is installed when the concrete member 111 is formed, there is a problem that the use of the initial equipment increases.

따라서 본 발명의 목적은, 콘크리트부재에 대한 인장 보강작업이 용이하고, 유지보수단계에서 포스트인장보강재를 선택할 수 있고, 포스트인장보강재의 부식에 따른 강도저하를 방지할 수 있으며, 초기설비용을 줄일 수 있도록 한 교량상부구조용 콘크리트거더를 제공하는 것이다.Therefore, an object of the present invention, the tension reinforcement work on the concrete member, easy to select the post tensile reinforcement in the maintenance phase, to prevent the strength decrease due to the corrosion of the post tensile reinforcement, reduce the initial equipment It is to provide concrete girder for bridge superstructure.

상기 목적은, 본 발명에 따라, 콘크리트부재와; 앵커판과 상기 앵커판에 수직으로 배치되도록 상기 앵커판의 저면에 형성되고 길이방향을 따라 볼트홈이 형성되어 있는 볼트체결기둥과 상기 볼트홈에 나사결합되도록 볼트체결기둥에 결합된 앵커볼트를 가지고, 상기 앵커볼트의 헤드가 상기 콘크리트부재의 외표면에 노출되도록 상기 콘크리트부재에 매립된 포스트인장보강용 앵커를 포함하는 것을 특징으로 하는 교량상부구조용 콘크리트거더에 의해 달성된다.The object is, according to the present invention, a concrete member; Has a bolt fastening column formed on the bottom of the anchor plate to be perpendicular to the anchor plate and the anchor plate and the bolt groove is formed along the longitudinal direction and the anchor bolt coupled to the bolt fastening column to be screwed into the bolt groove It is achieved by a concrete girder for the upper structure of the bridge comprising a post tension reinforcement anchor embedded in the concrete member so that the head of the anchor bolt is exposed to the outer surface of the concrete member.

여기서 콘크리트부재를 제작할 때 타설되는 콘크리트가 진동다짐에 의해 앵커볼트의 헤드를 덮는 것을 방지할 수 있도록, 상기 볼트홈은 상기 앵커볼트의 길이보다 큰 깊이를 갖도록 형성되고; 상기 앵커볼트의 헤드에 접촉하도록 상기 볼트홈에 설치된 지수팽창재를 더 포함하는 것이 바람직하다.Wherein the bolt groove is formed to have a depth greater than the length of the anchor bolt to prevent the concrete being poured when covering the head of the anchor bolt by vibrating compaction when manufacturing the concrete member; It is preferable to further include an exponential expansion material installed in the bolt groove to contact the head of the anchor bolt.

그리고 콘크리트부재에 대한 포스트인장보강용 앵커의 결합력을 증가시킬 수 있도록, 상기 앵커판에 수직으로 배치되도록 상기 앵커판의 상면에 결합된 스터드볼트를 더 포함하는 것이 바람직하다.And it is preferable to further include a stud bolt coupled to the upper surface of the anchor plate to be disposed perpendicular to the anchor plate, so as to increase the binding force of the post tension reinforcement anchor to the concrete member.

또한 앵커판과 거푸집 사이에 콘크리트가 밀실하게 채워져 콘크리트부재에 대한 포스트인장보강용 앵커의 결합력을 증가시킬 수 있도록, 상기 앵커판은 직사각형 형태로 형성되고, 콘크리트안내공이 형성되어 있으며; 상기 볼트체결기둥은 상기 앵커판의 각 모서리영역에 하나씩 형성되는 것이 바람직하다.In addition, the anchor plate is formed in a rectangular shape so that the concrete is tightly filled between the anchor plate and the formwork to increase the bonding force of the post tension reinforcing anchor to the concrete member, the concrete guide hole is formed; The bolt fastening pillar is preferably formed in each corner region of the anchor plate.

또한 콘크리트부재에 대한 포스트인장보강용 앵커의 결합력을 증가시킬 수 있도록, 상기 앵커판의 각 모서리영역으로부터 상호 직각을 이루도록 한 쌍씩 연장 형성된 철근지지암을 더 포함하는 것이 바람직하다.In addition, it is preferable to further include a reinforcing support arm extending in pairs to form a right angle to each other from each corner area of the anchor plate, so as to increase the bonding force of the post tension reinforcement anchor to the concrete member.

또한 철근지지암과 거푸집 사이에 콘크리트가 밀실하게 채워져 콘크리트부재에 대한 포스트인장보강용 앵커의 결합력을 증가시킬 수 있도록, 상기 각 철근지지암에는 콘크리트안내홈이 종단으로부터 상기 볼트체결기둥을 향해 절취 형성되어 있는 것이 바람직하다.In addition, the concrete guide groove is formed in each of the reinforcing support arms to be cut from the end toward the bolt fastening pillar so that the concrete is tightly filled between the reinforcing support arms and the formwork to increase the coupling force of the post tension reinforcing anchor to the concrete member. It is preferable that it is done.

따라서 본 발명에 따르면, 앵커판과 앵커판에 수직으로 배치되도록 앵커판의 저면에 형성된 볼트체결기둥과 볼트체결기둥에 결합된 앵커볼트를 포함하는 포스트인장보강용 앵커를 콘크리트부재에 매립함으로써, 콘크리트부재에 대한 인장 보강작업이 용이하고, 유지보수단계에서 포스트인장보강재를 선택할 수 있고, 포스트인장보강재의 부식에 따른 강도저하를 방지할 수 있으며, 초기설비용을 줄일 수 있다.Therefore, according to the present invention, by embedding a post tension reinforcement anchor including a bolt fastening column formed on the bottom surface of the anchor plate and the anchor bolt coupled to the bolt fastening column to be disposed perpendicular to the anchor plate and the anchor plate, the concrete, Tensile reinforcement of the member is easy, post tensile reinforcement can be selected in the maintenance phase, the strength decrease due to corrosion of the post tensile reinforcement can be prevented, and the initial equipment can be reduced.

도1은 본 발명의 실시예에 따른 교량상부구조용 콘크리트거더의 전체 구성도,
도2는 본 발명의 실시예에 따른 포스트인장보강용 앵커의 사시도,
도3은 본 발명의 실시예에 따른 포스트인장보강용 앵커의 분해사시도,
도4는 본 발명의 실시예에 따른 포스트인장보강용 앵커의 배면 사시도,
도5는 본 발명의 실시예에 따른 포스트인장보강용 앵커의 설치상태를 도시한 단면도,
도6은 본 발명의 실시예에 따른 프리인장보강부의 상세도,
도7, 도8, 도9 및 도10은 각각 본 발명의 실시예에 따른 포스트인장보강용 앵커를 사용하는 방법을 도시한 도면,
도11은 종래 교량상부구조용 콘크리트거더의 전체 구성도,
도12는 종래 프리인장보강부의 상세도이다.1 is an overall configuration diagram of a concrete girder for bridge superstructure according to an embodiment of the present invention,
Figure 2 is a perspective view of the post tension reinforcement anchor according to an embodiment of the present invention,
Figure 3 is an exploded perspective view of the post tension reinforcement anchor according to the embodiment of the present invention,
4 is a rear perspective view of the post tension reinforcing anchor according to the embodiment of the present invention;
5 is a cross-sectional view showing an installation state of the post tension reinforcement anchor according to the embodiment of the present invention;
6 is a detailed view of the pre-tension reinforcement portion according to the embodiment of the present invention;
7, 8, 9 and 10 illustrate a method of using a post tension reinforcing anchor according to an embodiment of the present invention, respectively.
11 is an overall configuration diagram of a concrete girder for a conventional bridge upper structure,
12 is a detailed view of a conventional pretension reinforcement unit.

이하에서, 첨부도면을 참조하여 본 발명을 상세히 설명하기로 한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도1은 본 발명의 실시예에 따른 교량상부구조용 콘크리트거더의 전체 구성도이고, 도2는 본 발명의 실시예에 따른 포스트인장보강용 앵커의 사시도이고, 도3은 본 발명의 실시예에 따른 포스트인장보강용 앵커의 분해사시도이고, 도4는 본 발명의 실시예에 따른 포스트인장보강용 앵커의 배면 사시도이고, 도5는 본 발명의 실시예에 따른 포스트인장보강용 앵커의 설치상태를 도시한 단면도이고, 도6은 본 발명의 실시예에 따른 프리인장보강부의 상세도이다.1 is an overall configuration diagram of a concrete girder for bridge superstructure according to an embodiment of the present invention, Figure 2 is a perspective view of a post tension reinforcement anchor according to an embodiment of the present invention, Figure 3 according to an embodiment of the present invention Figure 4 is an exploded perspective view of the post tension reinforcement anchor, Figure 4 is a rear perspective view of the post tension reinforcement anchor according to an embodiment of the present invention, Figure 5 shows the installation state of the post tension reinforcement anchor according to an embodiment of the present invention. 6 is a cross-sectional view illustrating a pretension reinforcement unit according to an embodiment of the present invention.

본 발명의 실시예에 따른 교량상부구조용 콘크리트거더는, 이들 도면에 도시된 바와 같이, 콘크리트부재(11)와, 콘크리트부재(11)에 설치된 프리인장보강부(20) 및 포스트인장보강용 앵커(30)를 갖고 있다.Concrete girder for the upper structure of the bridge according to an embodiment of the present invention, as shown in these drawings, the concrete member 11, the pre-tension reinforcement portion 20 and the post tension reinforcement anchor (installed on the concrete member 11) Have 30).

콘크리트부재(11)는 직선상으로 형성된다.Concrete member 11 is formed in a straight line.

프리인장보강부(20)는 콘크리트부재(11)의 양단에 동일개수로 분산되고 각각 외부로 노출되도록 설치된 프리인장보강정착구(21)와, 콘크리트부재(11)의 길이방향을 따라 배치되도록 콘크리트부재(11)에 매립된 프리인장보강보호관(22)과, 프리인장보강보호관(22)을 통과하고 양단이 프리인장보강정착구(21)에 긴장상태로 결합되도록 설치된 프리인장보강재(23)를 갖고 있다.The pre-tension reinforcement unit 20 is pre-tension reinforcing anchorage 21 and the concrete member so as to be distributed along both ends of the concrete member 11 and installed to be exposed to the outside, respectively, along the longitudinal direction of the concrete member 11 The pre-tension reinforcement tube 22 embedded in (11) and the pre-tension reinforcement member 23 are provided to pass through the pre-tension reinforcement protective tube 22 and both ends thereof are coupled to the pre-tension reinforcement anchorage 21 in a tensioned state. .

프리인장보강정착구(21)는 프리인장정착구바디부(21a), 프리인장쐐기(21b) 등을 사용하여 구현할 수 있다. 이러한 프리인장보강정착구(21)의 구조에 대해서는 종래 널리 알려져 있으므로 상세한 설명은 생략하기로 한다.The pre-tension reinforcement anchoring opening 21 can be implemented using a pre-tensioning anchoring body portion 21a, a pre-tensioning wedge 21b, or the like. Since the structure of the pre-tension reinforcing anchorage 21 is widely known in the art, a detailed description thereof will be omitted.

프리인장보강보호관(22)으로는 쉬스관(Sheath Pipe) 등을 사용할 수 있다.As the pre-tension reinforcement protective tube 22, a sheath pipe or the like can be used.

프리인장보강재(23)로는 피씨(PC)강선 등을 사용할 수 있다. 피씨(PC)강선은 종단에서 다수개의 가닥으로 나뉘어 프리인장보강정착구(21)에 결합된다.As the pre-tensile reinforcing material 23, a PC (PC) steel wire or the like can be used. PC steel wire is divided into a plurality of strands at the end is coupled to the pre-tension reinforcing anchorage 21.

이러한 구성을 갖는 프리인장보강재(23)는 잭(Jack) 등을 사용하여 긴장시킨 후, 프리인장보강보호관(22)의 내부에 시멘트페이스(Cement Paste) 등을 설치하는 그라우팅작업에 의해 프리인장보강보호관(22)의 내부에서 긴장상태를 유지한다.The pre-tension reinforcement 23 having such a configuration is tensioned using a jack or the like, and then pretension reinforcement is performed by grouting to install cement paste or the like in the pre-tension reinforcement protective pipe 22. The tension is maintained inside the protective tube 22.

포스트인장보강용 앵커(30)는 앵커판(31)과, 앵커판(31)의 저면에 형성된 볼트체결기둥(32)과, 볼트체결기둥(32)에 결합된 앵커볼트(33)와, 볼트체결기둥(32)에 설치된 지수팽창재(34)와, 앵커판(31)의 상면에 결합된 스터드볼트(35)와, 앵커판(31)으로부터 연장 형성된 철근지지암(36)을 갖고 있다.The post tension reinforcing anchor 30 includes an anchor plate 31, a bolt fastening column 32 formed on the bottom surface of the anchor plate 31, an anchor bolt 33 coupled to the bolt fastening column 32, and a bolt. The expansible expansion material 34 provided in the fastening column 32, the stud bolt 35 couple | bonded with the upper surface of the anchor plate 31, and the reinforced support arm 36 extended from the anchor plate 31 are included.

앵커판(31)은 직사각형 형태로 형성되고, 콘크리트안내공(31a)이 형성되어 있다. 직사각형에는 정사각형도 포함된다.The anchor plate 31 is formed in a rectangular shape, the concrete guide hole 31a is formed. The rectangle also includes a square.

볼트체결기둥(32)은 앵커판(31)의 각 모서리영역에서 앵커판(31)에 수직으로 배치되도록 앵커판(31)의 저면에 형성된다.The bolt fastening column 32 is formed on the bottom surface of the anchor plate 31 so as to be perpendicular to the anchor plate 31 in each corner region of the anchor plate 31.

그리고 볼트체결기둥(32)은 길이방향을 따라 볼트홈(32a)이 형성되어 있다.And the bolt fastening column 32 is formed with a bolt groove 32a along the longitudinal direction.

볼트홈(32a)은 앵커볼트(33)의 길이보다 큰 깊이를 갖도록 형성된다.The bolt groove 32a is formed to have a depth greater than the length of the anchor bolt 33.

앵커볼트(33)는 볼트홈(32a)에 나사결합되도록 볼트체결기둥(32)에 결합된다.The anchor bolt 33 is coupled to the bolt fastening column 32 to be screwed into the bolt groove (32a).

지수팽창재(34)는 앵커볼트(33)의 헤드에 접촉하도록 볼트홈(32a)에 설치된다.The expansive expandable material 34 is installed in the bolt groove 32a so as to contact the head of the anchor bolt 33.

지수팽창재(34)로는 종래 알려진 바와 같이 물과 접촉할 때 자기체적팽창이 일어나는 재질을 사용하여 제작된다.The exponential expander 34 is made of a material in which magnetic volume expansion occurs when it comes into contact with water, as is known in the art.

스터드볼트(35)는 앵커판(31)에 수직으로 배치되도록 앵커판(31)의 상면에 결합된다.The stud bolt 35 is coupled to the upper surface of the anchor plate 31 so as to be perpendicular to the anchor plate 31.

철근지지암(36)은 앵커판(31)의 각 모서리영역으로부터 상호 직각을 이루도록 한 쌍씩 연장 형성된다.The reinforcing support arms 36 extend in pairs to form a right angle with each other from each corner region of the anchor plate 31.

철근지지암(36)에는 콘크리트안내홈(36a)이 종단으로부터 볼트체결기둥(32)을 향해 절취 형성되어 있다.The concrete guide groove 36a is formed in the reinforcing support arm 36 to be cut away from the end toward the bolt fastening column 32.

본 발명의 실시예에 따른 포스트인장보강용 앵커(30)를 설치하는 방법을 도5를 참조하여 설명하면 다음과 같다.A method of installing the post tension reinforcing anchor 30 according to the embodiment of the present invention will be described with reference to FIG. 5 as follows.

먼저 볼트체결기둥(32)에 앵커볼트(33)를 설치한다.First, anchor bolts 33 are installed on the bolt fastening columns 32.

다음에 콘크리트부재(11)를 위한 거푸집(230)을 설치한다.Next, formwork 230 for the concrete member 11 is installed.

다음에 철근지지암(36)과 앵커판(31)이 철근(11a, 도면에는 일부만 표시됨)에 지지되고 볼트체결기둥(32)이 거푸집(230)에 접촉하도록 앵커판(31), 볼트체결기둥(32) 및 철근지지암(36)을 설치한다.Next, the reinforcing bar support arm 36 and the anchor plate 31 are supported by the reinforcing bars 11a (only a part of the drawing is shown) and the bolt fastening columns 32 contact the formwork 230. (32) and the reinforcing support arms 36 are installed.

다음에 스터드볼트(35)를 앵커판(31)에 결합한다.Next, the stud bolts 35 are coupled to the anchor plate 31.

다음에 지수팽창재(34)를 앵커볼트(33)의 헤드와 거푸집(230) 사이에 설치한다.Next, the exponential expansion material 34 is installed between the head of the anchor bolt 33 and the formwork 230.

다음에 콘크리트를 거푸집(230)에 타설하고 양생한다.Next, the concrete is poured into the formwork 230 and cured.

마지막으로 거푸집(230)을 해체한다. 거푸집(230)을 해체할 때 지수팽창재(34)도 함께 제거된다.Finally, the formwork 230 is dismantled. When disassembling the formwork 230, the exponential expander 34 is also removed.

그리고 본 발명의 실시예에 따른 포스트인장보강용 앵커(30)를 사용하여 인장 보강하는 방법을 도7 내지 도10을 참조하여 설명하면 다음과 같다.And a method of tensile reinforcement using the post tension reinforcement anchor 30 according to an embodiment of the present invention with reference to Figures 7 to 10 as follows.

먼저 정착구지지블럭(210)을 준비한다.First, the anchorage support block 210 is prepared.

정착구지지블럭(210)은 길이방향을 따라 인장재통과공(211a)이 형성되어 있는 지지블럭바디부(211)와, 지지블럭바디부(211)로부터 상호 멀어지는 방향을 따라 연장 형성된 한 쌍의 고정판(212)과, 앵커볼트(33)보다 긴 길이구간을 가지고 고정판(212)에 설치된 고정볼트(213)를 갖고 있다(도7 및 도8 참조).The anchorage support block 210 includes a pair of fixing plates extending along a direction away from the support block body portion 211 and the support block body portion 211 in which the tension-through holes 211a are formed along the longitudinal direction ( 212 and a fixing bolt 213 provided on the fixing plate 212 with a length longer than that of the anchor bolt 33 (see FIGS. 7 and 8).

다음에 고정볼트(213)를 사용하여 정착구지지블럭(210)을 포스트인장보강용 앵커(30)에 결합시킨다.Next, the fixing bolt 213 is used to couple the anchorage support block 210 to the post tension reinforcing anchor 30.

다음에 인장재통과공(211a)과 포스트인장정착구바디부(220a)를 통과하도록 포스트인장보강재(42)를 설치한다.Next, a post tensile reinforcing material 42 is installed to pass through the tension material passing hole 211 a and the post tension fixing fitting body 220a.

다음에 잭(Jack) 등을 사용하여 포스트인장보강재(42)를 긴장시킨다. 여기서, 포스트인장보강재(42)로는 피씨(PC)강선, 강봉, 탄소섬유판 등을 사용할 수 있다.Next, the post tensile reinforcement 42 is tensioned using a jack or the like. Here, the post tensile reinforcing material 42 may be used (PC) steel wire, steel bar, carbon fiber plate, and the like.

다음에 긴장상태의 포스트인장보강재(42)의 양단을 포스트인장쐐기(220b)에 결합시킨다.Next, both ends of the post-tension reinforcing material 42 in a tension state are coupled to the post-tension wedges 220b.

상술한 바와 같이 본 발명의 실시예에 따르면, 앵커판(31)과 앵커판(31)에 수직으로 배치되도록 앵커판(31)의 저면에 형성된 볼트체결기둥(32)과 볼트체결기둥(32)에 결합된 앵커볼트(33)를 포함하는 포스트인장보강용 앵커(30)를 콘크리트부재(11)에 매립함으로써, 콘크리트부재(11)에 대한 인장 보강작업이 용이하고, 유지보수단계에서 포스트인장보강재(42)를 선택할 수 있고, 포스트인장보강재(42)의 부식에 따른 강도저하를 방지할 수 있으며, 초기설비용을 줄일 수 있게 된다.According to the embodiment of the present invention as described above, the bolt fastening column 32 and the bolt fastening column 32 formed on the bottom surface of the anchor plate 31 so as to be perpendicular to the anchor plate 31 and the anchor plate 31. By embedding the post tension reinforcing anchor 30 including the anchor bolts 33 coupled to the concrete member 11, the tension reinforcement for the concrete member 11 is easy, and the post tension reinforcement in the maintenance step (42) can be selected, the strength decrease due to corrosion of the post tensile reinforcing material 42 can be prevented, and the use of the initial equipment can be reduced.

그리고 앵커볼트(33)의 헤드에 접촉하도록 지수팽창재(34)를 볼트홈(32a)에 설치함으로써, 콘크리트부재(11)를 제작할 때 타설되는 콘크리트가 진동다짐에 의해 앵커볼트(33)의 헤드를 덮는 것을 방지할 수 있게 된다.And by installing the exponential expansion material 34 in the bolt groove (32a) so as to contact the head of the anchor bolt 33, when the concrete member 11 is manufactured, the concrete to be poured vibrates to tighten the head of the anchor bolt 33 It becomes possible to prevent covering.

또한 앵커판(31)의 상면에 스터드볼트(35)를 결합함으로써, 콘크리트부재(11)에 대한 포스트인장보강용 앵커(30)의 결합력을 증가시킬 수 있게 된다.In addition, by coupling the stud bolt 35 to the upper surface of the anchor plate 31, it is possible to increase the coupling force of the post tension reinforcement anchor 30 to the concrete member (11).

또한 앵커판(31)을 직사각형 형태로 형성하고, 앵커판(31)에 콘크리트안내공(31a)을 형성하는 한편 앵커판(31)의 각 모서리영역에 볼트체결기둥(32)을 하나씩 형성함으로써, 앵커판(31)과 거푸집(230) 사이에 콘크리트가 밀실하게 채워져 콘크리트부재(11)에 대한 포스트인장보강용 앵커(30)의 결합력을 증가시킬 수 있게 된다.In addition, by forming the anchor plate 31 in a rectangular shape, by forming a concrete guide hole (31a) in the anchor plate 31 while forming a bolt fastening column 32 in each corner region of the anchor plate 31, Concrete is tightly filled between the anchor plate 31 and the formwork 230 to increase the coupling force of the post tension reinforcing anchor 30 to the concrete member 11.

또한 앵커판(31)의 각 모서리영역으로부터 상호 직각을 이루도록 한 쌍의 철근지지암(36)을 연장 형성함으로써, 콘크리트부재(11)에 대한 포스트인장보강용 앵커(30)의 결합력을 증가시킬 수 있게 된다.In addition, by forming a pair of reinforcing bar support arms 36 to form a right angle with each other from each corner region of the anchor plate 31, it is possible to increase the coupling force of the post tension reinforcement anchor 30 to the concrete member (11). Will be.

또한 철근지지암(36)에 콘크리트안내홈(36a)을 절취 형성함으로써, 철근지지암(36)과 거푸집(230) 사이에 콘크리트가 밀실하게 채워져 콘크리트부재(11)에 대한 포스트인장보강용 앵커(30)의 결합력을 증가시킬 수 있게 된다.In addition, by cutting the concrete guide groove 36a in the reinforcing support arm 36, the concrete is tightly filled between the reinforcing support arm 36 and the formwork 230 to post-tension reinforcement anchor for the concrete member 11 ( It is possible to increase the binding force of 30).

11, 111 : 교량상부구조용 콘크리트거더
20, 120 : 프리인장보강부
21, 121 : 프리인장보강정착구 22, 122 : 프리인장보강보호관
23, 123 : 프리인장보강재 30 : 포스트인장보강용 앵커
31 : 앵커판 32 : 볼트체결기둥
33 : 앵커볼트 34 : 지수팽창재
35 : 스터드볼트 36 : 철근지지암
140 : 포스트인장보강부 141 : 포스트인장보강보호관
210 : 정착구지지블럭
211 : 지지블럭바디부 212 : 고정판
213 : 고정볼트 220 : 포스트인장보강정착부11, 111: Concrete girder for bridge superstructure
20, 120: pre-tension reinforcement department
21, 121: Free tensile reinforcement anchorage 22, 122: Free tensile reinforcement protective tube
23, 123: pre-tensile reinforcement material 30: post-tensile reinforcement anchor
31: anchor plate 32: bolt fastening pillar
33: anchor bolt 34: exponential expansion material
35 stud bolt 36 rebar support arm
140: post tensile reinforcement unit 141: post tensile reinforcement protection officer
210: anchorage support block
211: support block body 212: fixed plate
213: fixing bolt 220: post tension reinforcement

Claims (6)

콘크리트부재와;
앵커판과 상기 앵커판에 수직으로 배치되도록 상기 앵커판의 저면에 형성되고 길이방향을 따라 볼트홈이 형성되어 있는 볼트체결기둥과 상기 볼트홈에 나사결합되도록 볼트체결기둥에 결합된 앵커볼트를 가지고, 상기 앵커볼트의 헤드가 상기 콘크리트부재의 외표면에 노출되도록 상기 콘크리트부재에 매립된 포스트인장보강용 앵커를 포함하는 것을 특징으로 하는 교량상부구조용 콘크리트거더.Concrete member;
Has a bolt fastening column formed on the bottom of the anchor plate to be perpendicular to the anchor plate and the anchor plate and the bolt groove is formed along the longitudinal direction and the anchor bolt coupled to the bolt fastening column to be screwed into the bolt groove And a post tension reinforcing anchor embedded in the concrete member so that the head of the anchor bolt is exposed to the outer surface of the concrete member. 제1항에 있어서,
상기 볼트홈은 상기 앵커볼트의 길이보다 큰 깊이를 갖도록 형성되고;
상기 앵커볼트의 헤드에 접촉하도록 상기 볼트홈에 설치된 지수팽창재를 더 포함하는 것을 특징으로 하는 교량상부구조용 콘크리트거더.The method of claim 1,
The bolt groove is formed to have a depth greater than the length of the anchor bolt;
The concrete girder for bridge upper structure, further comprising an exponential expansion material installed in the bolt groove so as to contact the head of the anchor bolt. 제1항에 있어서,
상기 앵커판에 수직으로 배치되도록 상기 앵커판의 상면에 결합된 스터드볼트를 더 포함하는 것을 특징으로 하는 교량상부구조용 콘크리트거더.The method of claim 1,
Bridge girder concrete girder further comprising a stud bolt coupled to the upper surface of the anchor plate to be disposed perpendicular to the anchor plate. 제1항에 있어서,
상기 앵커판은 직사각형 형태로 형성되고, 콘크리트안내공이 형성되어 있으며;
상기 볼트체결기둥은 상기 앵커판의 각 모서리영역에 하나씩 형성되는 것을 특징으로 하는 교량상부구조용 콘크리트거더.The method of claim 1,
The anchor plate is formed in a rectangular shape, the concrete guide hole is formed;
The bolt fastening pillar is a concrete girder for bridge upper structure, characterized in that formed in each corner area of the anchor plate. 제4항에 있어서,
상기 앵커판의 각 모서리영역으로부터 상호 직각을 이루도록 한 쌍씩 연장 형성된 철근지지암을 더 포함하는 것을 특징으로 하는 교량상부구조용 콘크리트거더.5. The method of claim 4,
The concrete girder for the upper bridge structure, characterized in that it further comprises a reinforcing support arm formed in pairs to form a right angle to each corner region of the anchor plate. 제5항에 있어서,
상기 각 철근지지암에는 콘크리트안내홈이 종단으로부터 상기 볼트체결기둥을 향해 절취 형성되어 있는 것을 특징으로 하는 교량상부구조용 콘크리트거더.The method of claim 5,
Concrete girder for the upper portion of the bridge, characterized in that the concrete guide groove is formed in each of the reinforcing support arms cut from the end toward the bolt fastening pillar.
KR1020120023161A 2012-03-07 2012-03-07 Concrete Girder for Upper Structure of Bridge KR101535180B1 (en)

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Publication number Priority date Publication date Assignee Title
KR101692488B1 (en) * 2016-03-02 2017-01-17 길준욱 Prestressed concrete girder having reinforcing member and the construction method thereof

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KR100681734B1 (en) * 2006-11-14 2007-02-16 주식회사 진우엔지니어링 Basics anchor for accessory equipment of a road bridge beam
KR20100037696A (en) * 2008-10-02 2010-04-12 이근식 A embeded anchor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101692488B1 (en) * 2016-03-02 2017-01-17 길준욱 Prestressed concrete girder having reinforcing member and the construction method thereof

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