KR970011194A - Bridge beam reinforcement method and device - Google Patents

Bridge beam reinforcement method and device Download PDF

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Publication number
KR970011194A
KR970011194A KR1019950026937A KR19950026937A KR970011194A KR 970011194 A KR970011194 A KR 970011194A KR 1019950026937 A KR1019950026937 A KR 1019950026937A KR 19950026937 A KR19950026937 A KR 19950026937A KR 970011194 A KR970011194 A KR 970011194A
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South Korea
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fixing
tension
support
tension member
support member
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KR1019950026937A
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Korean (ko)
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KR0173153B1 (en
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정규성
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정규성
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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
    • 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
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

본 발명은 교량 빔 보강공법 및 그 장치에 관한 것이다. 일반적으로 교량의 빔은 통과하중의 증가 등으로 인하여 균열과 처짐이 생기게 되는 바, 종래에는 이러한 균열과 처짐을 보정하고 더 이상의 균열과 처짐을 방지하기 위하여 소위 포스트 텐션 공법을 사용하고 있다. 이러한 종래의 공법은 빔의 양측면에 강연선을 중간부가 아래로 처진 상태로 설치하고 빔의 중간부에 다수개의 새들을 설치하여 강연선을 긴장시키는 것에 의하여 강연선이 긴장되면서 중간부가 새들을 들어올려 빔의 균열과 처짐을 보정 및 방지하도록 하고 있다. 그러나 이러한 종래의 공법에서는 중간부가 처진 강연선을 긴장할 때 새들을 들어올리는 힘이 매우 작기 때문에 힘의 작용원리에서 볼 때 비효율적이며, 긴장된 상태로 정착시키기 위하여 콘크리트를 타설하기 때문에 시공 후 긴장이완이 발생하였을 경우에 이를 재긴장시킬 수 없는 문제점이 있었다. 또한 긴장부재를 설치하기 위하여 빔을 관통하는 다수개의 통공을 천공하여야 하므로 빔 자체의 강도를 저하시키게 되는 문제점도 있었다. 본 발명은 빔의 저면측에서 빔의 길이방향과 평행한 방향으로 긴장시킴으로써 균열을 확실하게 밀착시켜 균열을 방지함과 아울러 처짐을 방지할 수 있다. 긴장부재로서 정착용 숫나사부를 가지는 강봉이나 강연선을 사용하며 이 숫나사부에 정착용 너트를 체결함으로써 정착시키는 것으로서 긴장이완현상이 발생하였을 때 재긴장이 가능하여 장기간 시공상태를 유지할 수 있다. 긴장부재를 지지하는 지지수단을 빔에 설치함에 있어서 빔을 관통하지 않는 앵커를 최소한 타입함으로써 빔 자체의 강도를 저하시키는 일이 없게 된다.The present invention relates to a bridge beam reinforcement method and an apparatus thereof. In general, a beam of a bridge causes cracks and deflections due to an increase in a passing load, and conventionally, so-called post-tensioning methods are used to correct such cracks and deflections and to prevent further cracks and deflections. In this conventional method, the strand is tensioned by placing the strand in a state where the middle portion sags downward and installs a plurality of birds in the middle of the beam to tension the strand, thereby lifting the birds in the middle portion to crack the beam. To correct and prevent excessive deflection. However, in this conventional method, the force of lifting birds is very small when the middle part is in tension with the sagging strand, which is inefficient in terms of the action of force, and because the concrete is laid to settle in a tensioned state, tension relaxation occurs after construction. In this case there was a problem that can not be restrained. In addition, in order to install the tension member, a plurality of holes penetrating the beam must be drilled, so that there is a problem of lowering the strength of the beam itself. According to the present invention, cracks can be reliably brought into close contact with the cracks by being tensioned in the direction parallel to the longitudinal direction of the beams on the bottom face side of the beams, and sag can be prevented. As a tension member, a steel rod or a stranded wire having a fixing male thread part is used, and the fixing nut is fastened by fastening a fixing nut to the male thread part. Thus, when tension relaxation occurs, retension is possible, and thus the construction state can be maintained for a long time. In installing the support means for supporting the tension member in the beam, the type of anchor not penetrating the beam is at least typed so that the strength of the beam itself is not lowered.

Description

교량 빔 보강공법 및 그 장치Bridge beam reinforcement method and device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 의하여 보강된 교량의 사시도,1 is a perspective view of a bridge reinforced by the present invention,

제2도는 본 발명에 의하여 보강된 교량의 측면도,2 is a side view of a bridge reinforced by the present invention,

제6도는 본 발명의 의한 교량 빔 보강공법의 공정도로서,6 is a process diagram of the bridge beam reinforcement method of the present invention,

(가)는 빔에 지지수단을 설치한 상태를 보인 사시도,(A) is a perspective view showing a state in which a support means is installed on the beam,

(나)는 지지수단에 긴장부재를 지지하고 긴장부재에 정착수단을 결합한 상태를 보인 사시도,(B) is a perspective view showing a state in which the tension member is supported on the support means and the fixing means is coupled to the tension member;

(다)는 긴장부재의 긴장측에 유압잭을 설치한 상태를 보인 사시도,(C) is a perspective view showing a state where the hydraulic jack is installed on the tension side of the tension member,

(라)는 유압잭을 작동시켜 긴장부재를 긴장시킨 상태를 보인 사시도,(D) is a perspective view showing a state in which the tension member is tensioned by operating the hydraulic jack;

(마)는 긴장된 긴장부재를 정착수단에 의하여 정착시킨 상태를 보인 사시도,(E) is a perspective view showing a state in which the tension member is fixed by the fixing means,

(바)는 긴장부재의 정착이 완료되고 잭을 제거한 상태를 보인 사시도,(Bar) is a perspective view showing the state in which the fixing of the tension member is completed and the jack is removed,

제11도는 긴장부재와 정착수단을 보인 분해 사시도,11 is an exploded perspective view showing the tension member and the fixing means,

Claims (13)

빔의 양단에 고정측 및 기장측 지지수단을 고정하여 지지판부가 빔 저면에서 하방으로 돌출되게 설치하는 단계와; 일단에 스토퍼가 구비되고 타단에 정착용 숫나사부가 구비된 긴장부재를 스토퍼가 고정측 지지수단의 지지판부에 고정지지되고 정착용 숫나사부가 긴장측 지지수단의 지지판부에 길이방향으로 유동가능하게 지지되도록 관통설치함과 아울러 상기 정착용 숫나사부에 정착용 너트를 체결하는 단계와; 상기 정착용 숫나사부의 끝단을 유압잭의 결합하여 긴장부재를 긴장시키는 단계와; 상기 정착용 너트를 숫나사부에 대하여 조여서 긴장측 지지수단의 지지판부에 밀착시켜 긴장부재를 긴장된 상태로 정착시키고 유압잭을 제거하는 단계로 구성됨을 특징으로 하는 교량 빔 보강공법.Fixing the fixing side and the length side support means to both ends of the beam to install the support plate protruding downward from the bottom of the beam; The stopper is provided with a stopper at one end and a fixing male thread part at the other end thereof so that the stopper is fixed to the support plate of the fixed side support means, and the fixing male thread is supported to be movable in the longitudinal direction to the support plate of the tension side support means. Fastening the fixing nut to the fixing male part in addition to the penetrating installation; Tensioning the tension member by coupling an end of the fixing male thread part to a hydraulic jack; And tightening the fixing nut against the male screw part so as to be in close contact with the support plate of the tension side supporting means to fix the tension member in a tensioned state and to remove the hydraulic jack. 제1항에 있어서, 상기 지지수단을 설치하는 단계는 단면지지부재를 빔의 양단면에 밀착되게 설치하고, 이 단면지지부재의 양측 연결판부에 하단이 빔 저면에 이르는 측면지지부재를 용접고정하며, 이 측면지지부재에 빔의 하단에서 하방으로 돌출되는 지지판부를 가지는 저면지지부재를 용접고정하는 것에 의하여 이루어짐을 특징으로 하는 교량 빔 보강공법.The method of claim 1, wherein the step of installing the support means is to install the cross-sectional support member to be in close contact with both end surfaces of the beam, welding fixing the side support member of the lower end reaches the beam bottom on both side connecting plate of the cross-sectional support member And fixing the bottom support member having a support plate portion protruding downward from the bottom of the beam to the side support member. 제2항에 있어서, 상기 단면지지부재와 측면지지부재 및 저면지지부재와 빔 사이에 에폭시 접착제를 주입하여 부착하고 적어도 상기 각 부재의 연결부분을 앵커로 고정함을 특징으로 하는 교량 빔 보강공법.The bridge beam reinforcement method according to claim 2, wherein an epoxy adhesive is injected and attached between the cross-sectional support member, the side support member, the bottom support member, and the beam, and at least a connection portion of each member is anchored. 제1항에 있어서, 상기 유압잭을 설치하는 단계에서는 긴장측 저면지지부재의 외측 지지판부와 유압잭 사이에 긴장부재가 관통되는 안내공이 천공된 받침대를 삽입함을 특징으로 하는 교량 빔 보강공법.The bridge beam reinforcement method according to claim 1, wherein the installing of the hydraulic jack comprises inserting a pedestal with a guide hole through which the tension member penetrates between the outer support plate of the tension side bottom support member and the hydraulic jack. 빔의 양단에 고정된느 단면지지부재와 이 단면지지부재의 양측에 고정되어 빔의 양측면에 밀착되는 한 쌍의 측면지지부재와 이 측면지지부재의 하단에 고정되어 빔의 저면에 밀착됨과 아울러 빔의 저면에서 하방으로 돌출되는 적어도 하나 이상의 지지판부가 형성된 저면지지부재를 가지는 고정측 및 긴장측 지지수단과; 일단은 상기 고정측 지지수단의 저면지지부재에 형성된 지지판부에 고정지지되고 타단에는 정착용 숫나사부가 형성되며 이 숫나사부가 상기 긴장측 지지수단의 저면지지부재의 형성된 지지판부에 길이방향으로 유동가능하게 지지되는 긴장부재와; 이 긴장부재의 정착용 숫나사부에 체결되어 지지판부에 밀착되면서 긴장부재을 긴장된 상태로 정착시키는 정착수단과; 상기 정착측 저면지지부재의 지지판부에 지지되어 상기 기장부재에 결합되어 긴장부재를 긴장시키는 유압잭을 구비하여 됨을 특징으로 하는 교량 빔 보강공법.A pair of side support members fixed to both ends of the beam and a pair of side support members fixed to both sides of the cross-sectional support member and tightly attached to both sides of the beam, and fixed to the bottom of the side support members and closely adhered to the bottom of the beam. A fixed side and tension side support means having a bottom support member on which at least one support plate portion protrudes downward from a bottom of the bottom surface; One end is fixedly supported on a support plate portion formed in the bottom support member of the fixed side support means, and the other end is provided with a fixing male thread portion, and the male screw portion is movable in the longitudinal direction on the support plate portion of the bottom support member of the tension side support means. A tension member supported; Fastening means fastened to the fixing male thread portion of the tension member and in close contact with the support plate to fix the tension member in a tensioned state; And a hydraulic jack supported by the support plate of the fixing side bottom support member and coupled to the length member to tension the tension member. 제5항에 있어서, 상기 단면지지부재는 빔의 양단면에 밀착되는 단면판부외 이 단면판부에서 직각으로 절곡되어 빔의 길이방향으로 연장되는 양측 연결판부에 의하여 대략 "ㄷ"자형 단면으로 형성되고, 상기 한쌍의 측면지지부재는 단부지지부재의 양측연결판부에 고정되는 부분에서부터 빔의 길이방향과 평행인 수평부와 빔에 대하여 하향 경사지게 연장되는 경사부로 구성되며, 저면 지지부재는 빔의 저면에 밀착되는 저면판부와 이저면판부의 양측에서 직각으로 상향 절곡형성되어 상기 측면지지부의 하단에 고정연결되는 연결판부와 상기 저면판부에서 하향 돌출되게 고정부착되어 적어도 하나 이상의 긴장부재 관통공이 천공된 지지판부로 구성됨을 특징으로 하는 교량 빔 보강장치.According to claim 5, The cross-sectional support member is formed in a substantially "C" shaped cross-section by the two sides of the connecting plate extending in the longitudinal direction of the beam is bent at right angles in the cross-sectional plate portion in addition to the cross-sectional plate portion in close contact with both end surfaces of the beam The pair of side support members includes a horizontal portion parallel to the longitudinal direction of the beam and an inclined portion extending inclined downward with respect to the beam from a portion fixed to both side connecting plate portions of the end support member. Upwardly bent at right angles on both sides of the bottom plate portion and the bottom plate portion to be in close contact with the connecting plate portion fixedly connected to the lower end of the side support portion and the support plate portion is fixedly attached to protrude downward from the bottom plate portion at least one tension member through hole perforated Bridge beam reinforcement, characterized in that configured. 제6항에 있어서, 상기 단면지지부재의 연결판부와 양측 측면지지부재 및 저면지지부재의 연결판부에는 다수개의 통공이 천공된 것임을 특징으로 하는 교량 빔 보강장치.7. The bridge beam reinforcement device according to claim 6, wherein a plurality of holes are perforated in the connection plate portion of the cross-sectional support member and the connection plate portion of both side support members and the bottom support member. 제5항에 있어서, 상기 긴장부재는 일단에 고정용 스토퍼가 구비되고 타단에는 정착용 숫나사부가 구비된 선재인 것을 특징으로 하는 교량 빔 보강장치.6. The bridge beam reinforcement device according to claim 5, wherein the tension member is a wire rod having a fixing stopper at one end and a male screw part at the other end. 제8항에 있어서, 상기 긴장부재의 선재는 양단에 고정용 숫나사부와 정착용 숫나사부가 형성된 강봉이며, 상기 스토퍼는 고정용 숫나사부에 체결되는 스토퍼 너트임을 특징으로 하는 교량 빔 보강장치.9. The bridge beam reinforcement device according to claim 8, wherein the wire member of the tension member is a steel rod having a fixing male portion and a fixing male portion formed at both ends thereof, and the stopper is a stopper nut fastened to the fixing male portion. 제8항에 있어서, 상기 긴장부재의 선재는 스토퍼가 고정설치되고 타단에 정착용 숫나사부가 형성된 강봉인 것을 특징으로 하는 교량 빔 보강장치.9. The bridge beam reinforcement device according to claim 8, wherein the wire member of the tension member is a steel rod having a stopper fixed thereto and a fixing male thread formed at the other end thereof. 제8항에 있어서, 상기 긴장부재의 선재는 다수 가닥의 강연선을 꼬아서 하나로 형성하고 그 양단에 고정용 및 정착용 숫나사부가 형성된 슬리브를 압착고정한 것이고, 상기 스토퍼는 상기 고정용 숫나사부에 체결되는 스토퍼 너트임을 특징으로 하는 교량 빔 보강장치.According to claim 8, wherein the wire member of the tension member is formed by twisting a plurality of strands of twisted wire and formed a fixed and fixed male threaded portion formed at both ends, the stopper is fastened to the fixing male threaded portion Bridge beam reinforcement device characterized in that the stopper nut. 제8항에 있어서, 상기 긴장부재의 선내는 다수 가닥의 강연선을 꼬아서 하나로 형성하고 일단에 스토퍼가 고정형성되고, 타단에는 정착용 숫나사부가 형성된 슬리브가 압착고정된 것임을 특징으로 하는 교량 빔 보강장치.The bridge beam reinforcement device according to claim 8, wherein the tension member is formed by twisting a plurality of stranded strands into one and having a stopper fixed at one end thereof and a sleeve having a fixing male thread formed at the other end of the tension member. . 제5항에 있어서, 상기 정착수단은 긴장부재의 정착용 숫나사부에 체결되는 정착용 너트임을 특징으로 하는 교량 빔 보강장치.6. The bridge beam reinforcement device according to claim 5, wherein the fixing means is a fixing nut which is fastened to a male thread portion for fixing the tension member. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950026937A 1995-08-28 1995-08-28 Method and apparatus of beam stiffening for bridge KR0173153B1 (en)

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KR1019950026937A KR0173153B1 (en) 1995-08-28 1995-08-28 Method and apparatus of beam stiffening for bridge

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KR100316518B1 (en) * 1999-04-02 2001-12-12 박대열 Assembly tensioning steel girder beam
KR100466429B1 (en) * 2001-09-28 2005-01-13 허진구 PSC girder that possible an external tension
KR100492336B1 (en) * 2002-03-18 2005-05-31 박재만 Reinforcement method to resist earthquakes for lower structure of bridge and there of apparatus
KR100492335B1 (en) * 2002-03-18 2005-05-31 박재만 Reinforcement method to resist earthquakes for lower structure of bridge and there of apparatus

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100316518B1 (en) * 1999-04-02 2001-12-12 박대열 Assembly tensioning steel girder beam
KR100466429B1 (en) * 2001-09-28 2005-01-13 허진구 PSC girder that possible an external tension
KR100492336B1 (en) * 2002-03-18 2005-05-31 박재만 Reinforcement method to resist earthquakes for lower structure of bridge and there of apparatus
KR100492335B1 (en) * 2002-03-18 2005-05-31 박재만 Reinforcement method to resist earthquakes for lower structure of bridge and there of apparatus

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