WO2011005049A2 - Pre-stressed reinforced concrete girder and a method of constructing therewith - Google Patents

Pre-stressed reinforced concrete girder and a method of constructing therewith Download PDF

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Publication number
WO2011005049A2
WO2011005049A2 PCT/KR2010/004476 KR2010004476W WO2011005049A2 WO 2011005049 A2 WO2011005049 A2 WO 2011005049A2 KR 2010004476 W KR2010004476 W KR 2010004476W WO 2011005049 A2 WO2011005049 A2 WO 2011005049A2
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WIPO (PCT)
Prior art keywords
fixing
girder
tension
steel
reinforced concrete
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PCT/KR2010/004476
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French (fr)
Korean (ko)
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WO2011005049A3 (en
Inventor
노윤근
박근화
노경범
Original Assignee
No Yun Keun
Park Geun Hwa
No Kyung Beom
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Publication of WO2011005049A2 publication Critical patent/WO2011005049A2/en
Publication of WO2011005049A3 publication Critical patent/WO2011005049A3/en

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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
    • E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
    • 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
    • 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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/10—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal prestressed
    • 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
    • E01D2101/26—Concrete reinforced
    • E01D2101/28—Concrete reinforced prestressed

Definitions

  • the present invention relates to a prestressed reinforced concrete girder and a construction method thereof.
  • prestressed reinforced concrete girders that have been introduced with reinforcement wires in reinforced concrete have a limit to the tension force that can introduce the stranded wires due to cracking due to tensile force on the upper part of the prestressed reinforced concrete girder when the tensioning force is introduced into the reinforcement wires.
  • the height of the prestressed reinforced concrete girder is increased while the interval of the prestressed reinforced concrete girder is shortened.
  • the bridge is unable to withstand the tensile force generated by the moment applied to the prestressed reinforced concrete girder over time, causing cracks in the bottom plate concrete of the parent portion, or cracks in the lower part of the prestressed reinforced concrete girder.
  • the bridge cannot fulfill its role as a bridge.
  • the bridge not only causes corrosion of reinforcing bars due to cracking, but also reduces the adhesion between concrete and reinforcing bars due to air pollution, thereby severely affecting the strength of prestressed reinforced concrete girder, reducing durability of bridges, and reinforcing reinforcement.
  • construction is difficult due to replacement of a floor plate or reinforcement of an external PC steel wire, and construction cost is too high.
  • the present invention has been made to solve the problems described above, in the continuous bridge of prestressed reinforced concrete girders, the side fixing blocks are fixed to both sides of the outer side of the outer section of the girder, the side fixing block, A pair of secondary tension combined tension fixing unit and a pair of reinforcing fixing unit are installed in the block, and side fixing blocks are fixed to both sides of the abdomen of the inner part of the outer span of the girder, and the repairing reinforcement is applied to the side fixing block.
  • Prestressed reinforced concrete girder for achieving the above object is a continuous bridge prestressed reinforced concrete girder, girder consisting of the upper, lower flange and the abdomen; Side fixing blocks protruding at both sides of the girder with a predetermined width and width; A secondary tension combined continuous fixing unit installed at the upper end of the side fixing block, respectively, for fixing secondary tension combined continuous tension, and fixing steel fittings, sheaths, and continuous PC steel wires;
  • the lower side lateral fixing block of the secondary tension combined tension fixing unit is characterized in that it is composed of a reinforcing reinforcing fixing unit installed without fixing the steel fixture and the PC steel wire, only the reinforcing reinforcing sheath.
  • the prestressed reinforced concrete girder according to the present invention for achieving the above object is a simple bridge prestressed reinforced concrete girder, girder consisting of the upper, lower flange and the abdomen; Side fixing blocks protruding at both sides of the girder with a predetermined width and width; A secondary tension fixing unit in which an upper portion of the side fixing block is provided with steel anchors and sheaths and sheaths and secondary tension PC steel wires respectively installed for secondary tension;
  • the lower side lateral fixing block of the secondary tension fixing unit is characterized in that it is composed of a fixing reinforcing fixing unit which is fixed to the reinforcing reinforcement sheath is not installed steel fittings and PC steel wire.
  • the prestressed reinforced concrete girder construction method according to the present invention for achieving the above object is a continuous bridge prestressed reinforced concrete girder construction method, the girder consisting of the upper, lower flange and abdomen; Side fixing blocks protruding at both sides of the girder with a predetermined width and width; A secondary tension combined tension fixing unit installed at the upper end of the side fixing block, respectively, for fixing the secondary tension combined continuous tension, and the steel anchoring hole, the sheath and the PC steel wire are fixed;
  • the outer side of the outer span of the prestressed reinforced concrete girder consisting of a reinforcing reinforcing fixing unit installed without fixing steel fittings and a PC steel wire to the lower side side fixing block of the secondary tension-use continuous tension fixing unit, but only a reinforcing reinforcing sheath is installed.
  • a pair of secondary tension sequencing tension fixing units and a pair of reinforcing fixing units are installed in the side fixing blocks on both sides of the partial abdomen, and the reinforcing fixing units are fixed to the side fixing blocks on both sides of the abdomen of the inner part of the girder's outer span.
  • a pair of parts is installed, and a pair of repair reinforcing fixing parts are installed on both sides of the inner side of the inner girder of the girder, and a pair of repair reinforcing fixing parts are installed on the side fixing blocks.
  • the prestressed reinforced concrete girder construction method according to the present invention for achieving the above object is a simple bridge prestressed reinforced concrete girder construction method, the girder consisting of the upper, lower flange and abdomen; Side fixing blocks protruding at both sides of the girder with a predetermined width and width; A secondary tension fixing unit in which an upper portion of the side fixing block is provided with steel anchors and sheaths and sheaths and secondary tension PC steel wires respectively installed for secondary tension;
  • the lower side side fixing block of the secondary tension fixing unit has side fixing parts on both sides of both ends of the prestressed reinforced concrete girder, which are composed of a fixing reinforcing fixing unit in which only steel fixing holes and PC steel wires are not installed and fixing sheaths are fixed.
  • the prestressed reinforced concrete girder and its construction method according to the present invention is fixed to the side fixing blocks on both sides of the abdomen of the outer portion of the girder outer girder, the secondary tension combined continuous tension fixing on the side fixing blocks A pair of parts and a pair of reinforcement fixing parts are installed, side fixing blocks are fixed to both sides of the abdomen of the inner part of the outer span of the girder, and a pair of reinforcing fixing parts is installed on the side fixing blocks.
  • the steel anchoring hole and PC steel wire are inserted in the maintenance reinforcement fixing part, and then additionally tensioned and repaired by the short span unit to increase the construction efficiency of continuity, It enables long spans, reduces reinforcement construction costs, facilitates construction, improves aesthetics, overcomes the mechanical limitations of low-rise, prestressed reinforced concrete girders that are difficult to reinforce long spans, and extends the service life as much as possible. There is an advantage to that.
  • FIG. 1 is a side view showing a short span prestressed reinforced concrete girder according to the present invention
  • FIG. 2 is a cross-sectional view taken along the line A-A of FIG.
  • FIG. 3 is a cross-sectional view taken along the line B-B of FIG.
  • FIG. 4 is a plan view showing a short span prestressed reinforced concrete girder according to the present invention
  • Figure 5 is a side view showing a two-span continuous bridge prestressed reinforced concrete girder according to the present invention
  • FIG. 6 is a cross-sectional view taken along the line A-A of FIG.
  • FIG. 7 is a cross-sectional view taken along the line B-B of FIG.
  • FIG. 8 is a cross-sectional view taken along the line C-C of FIG.
  • FIG. 9 is a side view showing a three-span continuous bridge prestressed reinforced concrete girder according to the present invention.
  • FIG. 10 is a cross-sectional view taken along the line A-A of FIG.
  • 11 is a cross-sectional view taken along the line B-B of FIG.
  • FIG. 13 is an enlarged detailed view of a portion “A” of FIG. 9;
  • FIG. 14 is an enlarged detailed view of a portion “B” of FIG. 9;
  • FIG. 16 is an enlarged detailed view of the line “A-A” in FIG. 13;
  • FIG. 1 is a side view showing a short span prestressed reinforced concrete girder according to the present invention
  • Figure 2 is a cross-sectional view taken along line AA of Figure 1
  • Figure 3 is a cross-sectional view taken along line BB of Figure 1
  • Figure 4 is a short-span prestress according to the present invention
  • 5 is a side view showing a two-span continuous bridge prestressed reinforced concrete girder according to the present invention
  • FIG. 6 is a sectional view taken along line AA of FIG. 5
  • FIG. 7 is a sectional view taken along line BB of FIG. 8 is a sectional view taken along line CC of FIG. 5, FIG.
  • FIG. 9 is a side view showing a three-span continuous bridge prestressed reinforced concrete girder according to the present invention
  • FIG. 10 is a sectional view taken along line AA of FIG. 9
  • FIG. 11 is a sectional view taken along line BB of FIG.
  • FIG. 12 is a cross-sectional view taken along line CC of FIG. 9
  • FIG. 13 is an enlarged view of portion "A” of FIG. 9
  • FIG. 14 is an enlarged view of portion "B” of FIG. 9, and FIG.
  • FIG. 16 is an enlarged detailed view showing the "AA" line in FIG. All.
  • the prestressed reinforced concrete girder in the continuous bridge prestressed reinforced concrete girder, the girder 10 consisting of the upper, lower flanges (12, 14) and the abdomen (16); Side fixing blocks 20 protruding at both sides of the girder 10 at a predetermined width and width; On the upper end of the side fixing block 20 is installed for the tension of the secondary tension combined serial tension PC steel wire 30, respectively, the steel fixture 44 and the sheath 42 and the secondary tension combined tension PC wire ( 30) fixed and installed secondary tension combined tension fixing unit 40;
  • the lower side side fixing block 20 of the secondary tension combined tension fixing unit 40 is not provided with the steel fittings 44 and the PC steel wire (30-1), only fixing the sheath 50 for the reinforcement reinforcement reinforcement It consists of a maintenance reinforcing fixing unit 60 is installed.
  • the prestressed reinforced concrete girder in the simple bridge prestressed reinforced concrete girder, the girder 10 consisting of the upper, lower flanges (12, 14) and the abdomen (16); Side fixing blocks 20 protruding at both sides of the girder 10 at a predetermined width and width; On the upper end of the side fixing block 20 is a steel anchoring hole 44 and secondary tension combined tension sheath 42-1 and secondary tension PC steel wire (30-1) are respectively installed for secondary tension A secondary tension fixing unit 40-1 fixedly installed;
  • the lower side fixing block 20 of the secondary tension fixing unit 40-1 is a fixing reinforcing fixing unit in which only the steel fixing fittings 44 and the PC steel wire are installed without fixing the sheath 50 for maintenance reinforcement. It consists of 60.
  • a pair of secondary tension sequential tension fixing unit 40 and a pair of reinforcing fixing unit 60 are installed on both sides of the outer side abdomen 16 of the outer section of the girder 10.
  • a pair of repair reinforcing fixing parts 60 are installed in the inner side of the inner portion of the outer portion of the girder 10 and the side surface fixing block 20 at both sides 16, and both ends of the inner portion of the girder 10 are provided. Both sides of the abdomen 16, the side fixing block 20 is provided with a pair of maintenance reinforcing fixing unit 60, respectively.
  • the side fixing block 20 is a concrete block of a rhombic shape on the basis of a plan view is installed on the abdomen 16 over the upper, lower flanges 12, 14 of the girder 10 to a predetermined thickness.
  • the reinforcing reinforcing fixing unit 60 has a concrete surface 48 formed of a steel fixture fitting form 46, and only the reinforcing reinforcing sheath 50 is inserted and fixed.
  • Prestressed reinforced concrete girder construction method is a continuous bridge prestressed reinforced concrete girder construction method, the girder 10 consisting of the upper, lower flanges (12, 14) and the abdomen (16); Side fixing blocks 20 protruding at both sides of the girder 10 at a predetermined width and width; On the upper end of the side fixing block 20 is installed for the tension of the secondary tension combined sequencing tension PC steel wire 30, respectively, the steel fixture 44 and the secondary tension sequencing tension sheath 42 and the secondary tension A secondary tension combined tension fixing unit 40 having a combined continuous tension PC steel wire 30 fixed thereto; The lower side fixing block 20 of the secondary tension combined tension fixing unit 40 is not provided with the steel fixing hole 44 and the PC steel wire, the maintenance reinforcement fixing fixed installed only the sheath 50 for maintenance reinforcement A pair of secondary tension sequencing tension fixing parts 40 in the side fixing blocks 20 on both sides of the outer portion of the outer portion of the outer span of the prestressed reinforced concrete girder 10 constituted by the portion 60 and repaired A pair of reinforcing
  • a pair of reinforcing reinforcing fixing parts 60 are respectively installed in the side fixing blocks 20 on both sides of both ends of the inner part of the girder 10 and the side abdomen 16, and the prestressed reinforced concrete girder 10 is installed.
  • the prestressed reinforced concrete girder construction method according to the present invention is a simple bridge prestressed reinforced concrete girder construction method, the girder 10 consisting of the upper, lower flanges (12, 14) and the abdomen (16); Side fixing blocks 20 protruding at both sides of the girder 10 at a predetermined width and width;
  • the upper portion of the side fixing block 20 is fixed to the steel fixtures 44 and secondary tension sheath 42-1 and secondary tension PC steel wire (30-1) are respectively installed for the secondary tension 2 A car tension fixing unit 40-1;
  • the lower side fixing block 20 of the secondary tension fixing unit 40-1 is not provided with steel fixing holes and PC steel wires, and the fixing reinforcement fixing unit 60 is fixed and installed only with the reinforcing sheath 50.
  • a side fixing block 20 is fixed to both sides of the abdominal both sides of the prestressed reinforced concrete girder 10 composed of a pair of secondary tension fixing units 40-1 at the upper end of the side fixing block 20.
  • the steel fixing fitting 44 is provided with a steel fitting fitting-shaped formwork 46 to pour and cure concrete, 46) to form the concrete surface 48 into which the steel fixture 44 is to be inserted, and if it is necessary to reinforcement in common, the steel fixture 44 is inserted into the concrete surface 48 and then epoxy Or after filling the clearance gap between the concrete surface 48 and the steel fittings 44 with the non-shrink mortar, the PC steel wire is inserted into the repair reinforcement tension.
  • the primary tension corresponds to the weight of the girder 10
  • the secondary tension combined sequential tension corresponds to the live load and at the same time the girder ( 10) can be realized by continuous bridges between low profile and long spans, and especially in the case of maintenance reinforcement during common use, if the statutory load condition is raised in the future, the load capacity decreases, or tensile cracking occurs in the girder 10,
  • it is the cheapest and simply effective reinforcement.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

Provided is a pre-stressed reinforced concrete girder and a method of constructing therewith. The pre-stressed reinforced concrete girder comprises: a girder consisting of an upper and a lower flange and a middle part; side-surface anchoring blocks which project by a predetermined width and breadth from both side surfaces of the girder; anchoring parts used for secondary tensioning and extending tension, which are provided in the upper end portions of the side-surface anchoring blocks in order to provide secondary tension and extended tension and which are securely provided with a steel anchorage and a sheath and an extending PC steel wire; and a repairing and reinforcing anchoring part which is securely provided with just a repairing and reinforcing sheath and is not provided with a steel anchorage or PC steel wire on the lower side-surface anchoring blocks of the anchoring parts used for a secondary tensioning and extending tension.

Description

프리스트레스트 철근 콘크리트 거더 및 이의 시공방법 Prestressed reinforced concrete girder and its construction method
본 발명은 프리스트레스트 철근 콘크리트 거더 및 이의 시공방법에 관한 것이다.The present invention relates to a prestressed reinforced concrete girder and a construction method thereof.
일반적으로 철근 콘크리트에 강연선을 설치하여 긴장력을 도입한 프리스트레스트 철근 콘크리트 거더는 강연선에 긴장력을 도입할 경우에는 프리스트레스트 철근 콘크리트 거더의 상부에 인장력에 의한 균열로 인하여 강연선을 도입할 수 있는 긴장력에 한계가 있으며, 또한 프리스트레스트 철근 콘크리트 거더의 지간이 짧아지면서 프리스트레스트 철근 콘크리트 거더의 높이가 커지는 문제점이 있다.In general, prestressed reinforced concrete girders that have been introduced with reinforcement wires in reinforced concrete have a limit to the tension force that can introduce the stranded wires due to cracking due to tensile force on the upper part of the prestressed reinforced concrete girder when the tensioning force is introduced into the reinforcement wires. In addition, there is a problem that the height of the prestressed reinforced concrete girder is increased while the interval of the prestressed reinforced concrete girder is shortened.
또한, 교량은 시간이 경과함에 따라 프리스트레스트 철근 콘크리트 거더에 작용하는 정부모멘트에 의하여 발생되는 인장력을 견디지 못하여 부모멘트부분 바닥판 콘크리트에 균열이 발생되거나, 프리스트레스트 철근 콘크리트 거더의 하부에 균열이 발생되어, 교량으로서의 역할을 다하지 못하는 문제점이 있다.In addition, the bridge is unable to withstand the tensile force generated by the moment applied to the prestressed reinforced concrete girder over time, causing cracks in the bottom plate concrete of the parent portion, or cracks in the lower part of the prestressed reinforced concrete girder. There is a problem in that it cannot fulfill its role as a bridge.
그리고, 교량은 균열로 인하여 철근의 부식이 발생될 뿐만 아니라 대기오염으로 인한 콘크리트와 철근과의 부착력이 떨어짐으로써 프리스트레스트 철근 콘크리트 거더의 강도에 심각한 영향을 주어 교량의 내구연한을 감소시키고, 보수보강에 있어서도 바닥판의 교체나 외부 PC강선의 보강 등으로 시공이 어렵고, 공사비가 너무 비싸 비경제적인 문제가 상존하고 있다.In addition, the bridge not only causes corrosion of reinforcing bars due to cracking, but also reduces the adhesion between concrete and reinforcing bars due to air pollution, thereby severely affecting the strength of prestressed reinforced concrete girder, reducing durability of bridges, and reinforcing reinforcement. In addition, construction is difficult due to replacement of a floor plate or reinforcement of an external PC steel wire, and construction cost is too high.
이에, 본 발명은 상기한 바와 같은 제문제점을 해결하기 위해 안출된 것으로서, 프리스트레스트 철근 콘크리트 거더의 연속교에 있어서, 거더의 외측경간의 외측부분 복부 양측면에 측면정착블록을 정착하고, 상기 측면정착블록에 2차 긴장 겸용 연속화 긴장용 정착부 한 쌍과 보수보강용 정착부 한 쌍을 설치하고, 거더의 외측경간의 내측부분 복부 양측면에 측면정착블록을 정착하고, 상기 측면정착블록에 보수보강용 정착부만 한 쌍을 설치하며, 거더의 내측경간의 양단부 부분 복부 양측면에 측면정착블록을 정착하고, 상기 측면정착블록에 보수보강용 정착부만 한 쌍을 설치하여 프리스트레스트 철근 콘크리트 거더에 1차 긴장하여, 교대, 교각에 거치 후, 바닥판 슬래브 콘크리트를 타설한 후, 2차 긴장 겸용 연속화 긴장용 정착부에서 연속화하는 전경간에 걸쳐 일괄적으로 2차 긴장 및 연속화 긴장을 하고, 공용중 보수보강이 필요한 경우에는 보수보강용 정착부에 강재정착구와 PC강선을 삽입 후, 단경간 단위로 각각 추가 긴장하여 보수보강함으로써, 연속화의 시공효율을 높이고, 보수보강 공사비를 절감하고, 시공을 용이하게 하고, 미관을 향상시켜 저형고, 장경간과 보수보강이 어려운 프리스트레스트 철근 콘크리트 거더의 역학적 한계를 극복하고, 공용수명을 최대한 늘리고자 하는 프리스트레스트 철근 콘크리트 거더 및 이의 시공방법을 제공하는데 그 목적이 있다.Accordingly, the present invention has been made to solve the problems described above, in the continuous bridge of prestressed reinforced concrete girders, the side fixing blocks are fixed to both sides of the outer side of the outer section of the girder, the side fixing block, A pair of secondary tension combined tension fixing unit and a pair of reinforcing fixing unit are installed in the block, and side fixing blocks are fixed to both sides of the abdomen of the inner part of the outer span of the girder, and the repairing reinforcement is applied to the side fixing block. Install a pair of fixing units, and fix the side fixing blocks on both sides of the abdomen of both ends of the inner span of the girder, and install only a pair of reinforcing reinforcing fixing units on the side fixing blocks to prestress the reinforced concrete girder. After tensioning, placing on the alternating pier, placing slab concrete, and then sequencing in the secondary tension sequential tension fixing unit Secondary and sequential tensions are applied collectively throughout the span, and when maintenance reinforcement is required during common use, insert steel anchors and PC steel wires into the fixing reinforcement fixing part, and then reinforce and reinforce additionally in short span units, Increasing the construction efficiency of sequencing, reducing the cost of reinforcement construction, facilitating construction and improving the aesthetics, overcoming the mechanical limitations of low-strength, long span and difficult reinforcement of prestressed reinforced concrete girders, and extending the service life as much as possible. The purpose is to provide prestressed reinforced concrete girder and its construction method.
상기한 목적을 달성하기 위한 본 발명에 따른 프리스트레스트 철근 콘크리트 거더는 연속교 프리스트레스트 철근 콘크리트 거더에 있어서, 상, 하부플랜지 및 복부로 이루어지는 거더와; 상기 거더의 양측면에 일정한 폭과 너비로 돌출 설치된 측면정착블록과; 상기 측면정착블록의 상단부에는 2차 긴장겸용 연속화 긴장을 위하여 각각 설치되면서 강재정착구와 쉬스 및 연속화 PC강선이 고정 설치된 2차 긴장겸용 연속화 긴장용 정착부와; 상기 2차 긴장겸용 연속화 긴장용 정착부의 하부측 측면정착블록에는 강재정착구와 PC강선이 설치되지 않고, 보수보강용 쉬스만 고정 설치된 보수보강용 정착부로 구성됨을 특징으로 한다.Prestressed reinforced concrete girder according to the present invention for achieving the above object is a continuous bridge prestressed reinforced concrete girder, girder consisting of the upper, lower flange and the abdomen; Side fixing blocks protruding at both sides of the girder with a predetermined width and width; A secondary tension combined continuous fixing unit installed at the upper end of the side fixing block, respectively, for fixing secondary tension combined continuous tension, and fixing steel fittings, sheaths, and continuous PC steel wires; The lower side lateral fixing block of the secondary tension combined tension fixing unit is characterized in that it is composed of a reinforcing reinforcing fixing unit installed without fixing the steel fixture and the PC steel wire, only the reinforcing reinforcing sheath.
또한, 상기한 목적을 달성하기 위한 본 발명에 따른 프리스트레스트 철근 콘크리트 거더는 단순교 프리스트레스트 철근 콘크리트 거더에 있어서, 상, 하부플랜지 및 복부로 이루어지는 거더와; 상기 거더의 양측면에 일정한 폭과 너비로 돌출 설치된 측면정착블록과; 상기 측면정착블록의 상단부에는 2차 긴장을 위하여 각각 설치되는 강재정착구와 쉬스 및 2차 긴장용 PC강선이 고정 설치된 2차 긴장용 정착부와; 상기 2차 긴장용 정착부의 하부측 측면정착블록에는 강재정착구와 PC강선이 설치되지 않고 보수보강용 쉬스만 고정 설치되는 보수보강용 정착부로 구성됨을 특징으로 한다.In addition, the prestressed reinforced concrete girder according to the present invention for achieving the above object is a simple bridge prestressed reinforced concrete girder, girder consisting of the upper, lower flange and the abdomen; Side fixing blocks protruding at both sides of the girder with a predetermined width and width; A secondary tension fixing unit in which an upper portion of the side fixing block is provided with steel anchors and sheaths and sheaths and secondary tension PC steel wires respectively installed for secondary tension; The lower side lateral fixing block of the secondary tension fixing unit is characterized in that it is composed of a fixing reinforcing fixing unit which is fixed to the reinforcing reinforcement sheath is not installed steel fittings and PC steel wire.
그리고, 상기한 목적을 달성하기 위한 본 발명에 따른 프리스트레스트 철근 콘크리트 거더 시공방법은 연속교 프리스트레스트 철근 콘크리트 거더 시공방법에 있어서, 상, 하부플랜지 및 복부로 이루어지는 거더와; 상기 거더의 양측면에 일정한 폭과 너비로 돌출 설치된 측면정착블록과; 상기 측면정착블록의 상단부에는 2차 긴장겸용 연속화 긴장을 위하여 각각 설치되면서 강재정착구와 쉬스 및 PC강선이 고정 설치된 2차 긴장겸용 연속화 긴장용 정착부와; 상기 2차 긴장겸용 연속화 긴장용 정착부의 하부측 측면정착블록에는 강재정착구와 PC강선이 설치되지 않고, 보수보강용 쉬스 만 고정 설치된 보수보강용 정착부로 구성되는 프리스트레스트 철근 콘크리트 거더의 외측경간의 외측부분 복부 양측면의 측면정착블록에 2차 긴장겸용 연속화 긴장용 정착부 한 쌍과 보수보강용 정착부 한 쌍을 설치하고, 상기 거더의 외측경간의 내측부분 복부 양측면에 측면정착블록에 보수보강용 정착부만 한 쌍을 설치하며, 상기 거더의 내측경간의 양단부 부분 복부 양측면에 측면정착블록에는 보수보강용 정착부만 각각 한 쌍을 설치하여, 프리스트레스트 철근 콘크리트 거더에 1차 긴장 PC강선을 1차 긴장하여 교대, 교각에 거치 후, 바닥판 슬래브 콘크리트를 타설한 후, 2차 긴장 겸용 연속화 긴장용 정착부에서 연속화하는 전 경간에 걸쳐 일괄적으로 2차 긴장 및 연속화 PC강선을 긴장하고, 보수보강용 정착부에서 단경간 단위로 각각 추가 긴장함을 특징으로 한다.In addition, the prestressed reinforced concrete girder construction method according to the present invention for achieving the above object is a continuous bridge prestressed reinforced concrete girder construction method, the girder consisting of the upper, lower flange and abdomen; Side fixing blocks protruding at both sides of the girder with a predetermined width and width; A secondary tension combined tension fixing unit installed at the upper end of the side fixing block, respectively, for fixing the secondary tension combined continuous tension, and the steel anchoring hole, the sheath and the PC steel wire are fixed; The outer side of the outer span of the prestressed reinforced concrete girder consisting of a reinforcing reinforcing fixing unit installed without fixing steel fittings and a PC steel wire to the lower side side fixing block of the secondary tension-use continuous tension fixing unit, but only a reinforcing reinforcing sheath is installed. A pair of secondary tension sequencing tension fixing units and a pair of reinforcing fixing units are installed in the side fixing blocks on both sides of the partial abdomen, and the reinforcing fixing units are fixed to the side fixing blocks on both sides of the abdomen of the inner part of the girder's outer span. A pair of parts is installed, and a pair of repair reinforcing fixing parts are installed on both sides of the inner side of the inner girder of the girder, and a pair of repair reinforcing fixing parts are installed on the side fixing blocks. After tensioning and alternating and placing on piers, after placing slab concrete on the slab, continuous at the tension fixing unit for secondary tension Tension and the second tension sequencing PC steel in bulk over the entire span of, and characterized in that each of the additional tension in the rehabilitation fixing section for a short span unit.
그리고, 상기한 목적을 달성하기 위한 본 발명에 따른 프리스트레스트 철근 콘크리트 거더 시공방법은 단순교 프리스트레스트 철근 콘크리트 거더 시공방법에 있어서, 상, 하부플랜지 및 복부로 이루어지는 거더와; 상기 거더의 양측면에 일정한 폭과 너비로 돌출 설치된 측면정착블록과; 상기 측면정착블록의 상단부에는 2차 긴장을 위하여 각각 설치되는 강재정착구와 쉬스 및 2차 긴장용 PC강선이 고정 설치된 2차 긴장용 정착부와; 상기 2차 긴장용 정착부의 하부측 측면정착블록에는 강재정착구와 PC강선이 설치되지 않고 보수보강용 쉬스만 고정 설치되는 보수보강용 정착부로 구성되는 프리스트레스트 철근 콘크리트 거더의 양단부 부분 복부 양측면에 측면정착블록을 정착하고, 상기 측면정착블록의 상단부에 2차긴장용 정착부 한 쌍과 강재정착구와 PC강선이 설치되지 않고 보수보강용 쉬스만 설치된 보수보강용 정착부 한 쌍을 설치하고, 프리스트레스트 철근 콘크리트 거더에 1차 긴장하여 교대에 거치 후, 바닥판 콘크리트를 타설한 후 2차 긴장용 정착부에서 2차 긴장을 하고, 공용중 보수보강이 필요한 경우 보수보강용 정착부에서 강재정착구와 PC강선을 기설치된 보수보강용 쉬스에 삽입 후, 보수보강 긴장을 하는 것을 특징으로 한다.In addition, the prestressed reinforced concrete girder construction method according to the present invention for achieving the above object is a simple bridge prestressed reinforced concrete girder construction method, the girder consisting of the upper, lower flange and abdomen; Side fixing blocks protruding at both sides of the girder with a predetermined width and width; A secondary tension fixing unit in which an upper portion of the side fixing block is provided with steel anchors and sheaths and sheaths and secondary tension PC steel wires respectively installed for secondary tension; The lower side side fixing block of the secondary tension fixing unit has side fixing parts on both sides of both ends of the prestressed reinforced concrete girder, which are composed of a fixing reinforcing fixing unit in which only steel fixing holes and PC steel wires are not installed and fixing sheaths are fixed. Fix the block, and install a pair of secondary tension fixing unit and a pair of repairing fixing unit in which only the steel fixing device and the PC steel wire are installed without the steel fixing unit and the PC steel wire at the upper end of the side fixing block, and the prestressed reinforcing bars are installed. After the first tension on the concrete girders, they are placed on the shifts, and after placing the bottom plate concrete, the second tension is performed on the secondary tension fixing unit. After the insertion into the pre-installed reinforcement sheath, it characterized in that the reinforcement tension.
이상에서 설명한 바와 같이, 본 발명에 따른 프리스트레스트 철근 콘크리트 거더 및 이의 시공방법은 거더의 외측경간의 외측부분 복부 양측면에 측면정착블록을 정착하고, 상기 측면정착블록에 2차 긴장 겸용 연속화 긴장용 정착부 한 쌍과 보수보강용 정착부 한 쌍을 설치하고, 거더의 외측경간의 내측부분 복부 양측면에 측면정착블록을 정착하고, 상기 측면정착블록에 보수보강용 정착부만 한 쌍을 설치하며, 거더의 내측경간의 양단부 부분 복부 양측면에 측면정착블록을 정착하고, 상기 측면정착블록에 보수보강용 정착부만 한 쌍을 설치하여 프리스트레스트 철근 콘크리트 거더에 1차 긴장하여 교대 교각에 거치후, 바닥판 슬래브 콘크리트를 타설한 후, 2차 긴장 겸용 연속화 긴장용 정착부에서 연속화하는 전경간에 걸쳐 일괄적으로 2차 긴장 및 연속화 긴장을 하고, 공용중 보수보강이 필요한 경우에는 보수보강용 정착부에서 강재정착구와 PC강선을 삽입 후, 단경간 단위로 각각 추가 긴장하여 보수보강함으로써, 연속화의 시공효율을 높여, 저형고, 장경간을 가능하게 하고, 보수보강 공사비를 절감하고 시공을 용이하게 하고, 미관을 향상시켜 저형고, 장경간과 보수보강이 어려운 프리스트레스트 철근 콘크리트 거더의 역학적 한계를 극복하고, 공용수명을 최대한 늘릴 수 있는 이점이 있다.As described above, the prestressed reinforced concrete girder and its construction method according to the present invention is fixed to the side fixing blocks on both sides of the abdomen of the outer portion of the girder outer girder, the secondary tension combined continuous tension fixing on the side fixing blocks A pair of parts and a pair of reinforcement fixing parts are installed, side fixing blocks are fixed to both sides of the abdomen of the inner part of the outer span of the girder, and a pair of reinforcing fixing parts is installed on the side fixing blocks. After fixing the side fixing block on both sides of the inner part of the inner span of the inner span of the side, and only a pair of maintenance reinforcing fixing unit is installed on the side fixing block, the first tension on the prestressed reinforced concrete girder and placed in the alternating piers, and then the bottom plate After placing the slab concrete, the secondary tension and the batch are applied collectively across the foreground between the secondary tension continuity tension anchorages. If sequential tension is required and maintenance reinforcement is required during common use, the steel anchoring hole and PC steel wire are inserted in the maintenance reinforcement fixing part, and then additionally tensioned and repaired by the short span unit to increase the construction efficiency of continuity, It enables long spans, reduces reinforcement construction costs, facilitates construction, improves aesthetics, overcomes the mechanical limitations of low-rise, prestressed reinforced concrete girders that are difficult to reinforce long spans, and extends the service life as much as possible. There is an advantage to that.
도 1은 본 발명에 따른 단경간 프리스트레스트 철근 콘크리트 거더를 도시한 측면도,1 is a side view showing a short span prestressed reinforced concrete girder according to the present invention,
도 2는 도 1의 A-A선 단면도,2 is a cross-sectional view taken along the line A-A of FIG.
도 3은 도 1의 B-B선 단면도,3 is a cross-sectional view taken along the line B-B of FIG.
도 4는 본 발명에 따른 단경간 프리스트레스트 철근 콘크리트 거더를 도시한 평면도,4 is a plan view showing a short span prestressed reinforced concrete girder according to the present invention,
도 5는 본 발명에 따른 2경간 연속교 프리스트레스트 철근 콘크리트 거더를 도시한 측면도,Figure 5 is a side view showing a two-span continuous bridge prestressed reinforced concrete girder according to the present invention,
도 6은 도 5의 A-A선 단면도,6 is a cross-sectional view taken along the line A-A of FIG.
도 7은 도 5의 B-B선 단면도,7 is a cross-sectional view taken along the line B-B of FIG.
도 8은 도 5의 C-C선 단면도,8 is a cross-sectional view taken along the line C-C of FIG.
도 9는 본 발명에 따른 3경간 연속교 프리스트레스트 철근 콘크리트 거더를 도시한 측면도,9 is a side view showing a three-span continuous bridge prestressed reinforced concrete girder according to the present invention,
도 10은 도 9의 A-A선 단면도,10 is a cross-sectional view taken along the line A-A of FIG.
도 11은 도 9의 B-B선 단면도,11 is a cross-sectional view taken along the line B-B of FIG.
도 12는 도 9의 C-C선 단면도,12 is a cross-sectional view taken along the line C-C of FIG.
도 13은 도 9의 "A"부분을 확대 도시한 상세도,FIG. 13 is an enlarged detailed view of a portion “A” of FIG. 9;
도 14는 도 9의 "B"부분을 확대 도시한 상세도,14 is an enlarged detailed view of a portion “B” of FIG. 9;
도 15는 도 9의 "C"부분을 확대 도시한 상세도,15 is an enlarged detailed view of a portion “C” of FIG. 9;
도 16은 도 13의 "A-A"선을 확대 도시한 상세도.FIG. 16 is an enlarged detailed view of the line “A-A” in FIG. 13;
이하, 본 발명을 첨부한 예시도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.
도 1은 본 발명에 따른 단경간 프리스트레스트 철근 콘크리트 거더를 도시한 측면도, 도 2는 도 1의 A-A선 단면도, 도 3은 도 1의 B-B선 단면도, 도 4는 본 발명에 따른 단경간 프리스트레스트 철근 콘크리트 거더를 도시한 평면도, 도 5는 본 발명에 따른 2경간 연속교 프리스트레스트 철근 콘크리트 거더를 도시한 측면도, 도 6은 도 5의 A-A선 단면도, 도 7은 도 5의 B-B선 단면도, 도 8은 도 5의 C-C선 단면도, 도 9는 본 발명에 따른 3경간 연속교 프리스트레스트 철근 콘크리트 거더를 도시한 측면도, 도 10은 도 9의 A-A선 단면도, 도 11은 도 9의 B-B선 단면도, 도 12는 도 9의 C-C선 단면도, 도 13은 도 9의 "A"부분을 확대 도시한 상세도, 도 14는 도 9의 "B"부분을 확대 도시한 상세도, 도 15는 도 9의 "C"부분을 확대 도시한 상세도, 도 16은 도 13의 "A-A"선을 확대 도시한 상세도이다.1 is a side view showing a short span prestressed reinforced concrete girder according to the present invention, Figure 2 is a cross-sectional view taken along line AA of Figure 1, Figure 3 is a cross-sectional view taken along line BB of Figure 1, Figure 4 is a short-span prestress according to the present invention 5 is a side view showing a two-span continuous bridge prestressed reinforced concrete girder according to the present invention, FIG. 6 is a sectional view taken along line AA of FIG. 5, and FIG. 7 is a sectional view taken along line BB of FIG. 8 is a sectional view taken along line CC of FIG. 5, FIG. 9 is a side view showing a three-span continuous bridge prestressed reinforced concrete girder according to the present invention, FIG. 10 is a sectional view taken along line AA of FIG. 9, FIG. 11 is a sectional view taken along line BB of FIG. FIG. 12 is a cross-sectional view taken along line CC of FIG. 9, FIG. 13 is an enlarged view of portion "A" of FIG. 9, FIG. 14 is an enlarged view of portion "B" of FIG. 9, and FIG. Detailed view showing an enlarged portion "C", and FIG. 16 is an enlarged detailed view showing the "AA" line in FIG. All.
이들 도면에 도시된 바와 같이, 본 발명에 따른 프리스트레스트 철근 콘크리트 거더는 연속교 프리스트레스트 철근 콘크리트 거더에 있어서, 상, 하부플랜지(12, 14) 및 복부(16)로 이루어지는 거더(10)와; 상기 거더(10)의 양측면에 일정한 폭과 너비로 돌출 설치된 측면정착블록(20)과; 상기 측면정착블록(20)의 상단부에는 2차 긴장겸용 연속화 긴장용 PC강선(30)의 긴장을 위하여 각각 설치되면서 강재정착구(44)와 쉬스(42) 및 2차 긴장겸용 연속화 긴장용 PC강선(30)이 고정 설치된 2차 긴장겸용 연속화 긴장용 정착부(40)와; 상기 2차 긴장겸용 연속화 긴장용 정착부(40)의 하부측 측면정착블록(20)에는 강재정착구(44)와 PC강선(30-1)이 설치되지 않고, 보수보강용 쉬스(50)만 고정 설치된 보수보강용 정착부(60)로 구성된다.As shown in these figures, the prestressed reinforced concrete girder according to the present invention, in the continuous bridge prestressed reinforced concrete girder, the girder 10 consisting of the upper, lower flanges (12, 14) and the abdomen (16); Side fixing blocks 20 protruding at both sides of the girder 10 at a predetermined width and width; On the upper end of the side fixing block 20 is installed for the tension of the secondary tension combined serial tension PC steel wire 30, respectively, the steel fixture 44 and the sheath 42 and the secondary tension combined tension PC wire ( 30) fixed and installed secondary tension combined tension fixing unit 40; The lower side side fixing block 20 of the secondary tension combined tension fixing unit 40 is not provided with the steel fittings 44 and the PC steel wire (30-1), only fixing the sheath 50 for the reinforcement reinforcement It consists of a maintenance reinforcing fixing unit 60 is installed.
또한, 본 발명에 따른 프리스트레스트 철근 콘크리트 거더는 단순교 프리스트레스트 철근 콘크리트 거더에 있어서, 상, 하부플랜지(12, 14) 및 복부(16)로 이루어지는 거더(10)와; 상기 거더(10)의 양측면에 일정한 폭과 너비로 돌출 설치된 측면정착블록(20)과; 상기 측면정착블록(20)의 상단부에는 2차 긴장을 위하여 각각 설치되는 강재정착구(44)와 2차 긴장겸용 연속화 긴장용 쉬스(42-1) 및 2차 긴장용 PC강선(30-1)이 고정 설치된 2차 긴장용 정착부(40-1)와; 상기 2차 긴장용 정착부(40-1)의 하부측 측면정착블록(20)에는 강재정착구(44)와 PC강선이 설치되지 않고 보수보강용 쉬스(50)만 고정 설치되는 보수보강용 정착부(60)로 구성된다.In addition, the prestressed reinforced concrete girder according to the present invention, in the simple bridge prestressed reinforced concrete girder, the girder 10 consisting of the upper, lower flanges (12, 14) and the abdomen (16); Side fixing blocks 20 protruding at both sides of the girder 10 at a predetermined width and width; On the upper end of the side fixing block 20 is a steel anchoring hole 44 and secondary tension combined tension sheath 42-1 and secondary tension PC steel wire (30-1) are respectively installed for secondary tension A secondary tension fixing unit 40-1 fixedly installed; The lower side fixing block 20 of the secondary tension fixing unit 40-1 is a fixing reinforcing fixing unit in which only the steel fixing fittings 44 and the PC steel wire are installed without fixing the sheath 50 for maintenance reinforcement. It consists of 60.
여기서, 상기 거더(10)의 외측경간 외측부분 복부(16) 양측면 측면정착블록(20)에는 2차 긴장겸용 연속화 긴장용 정착부(40) 한 쌍과 보수보강용 정착부(60) 한 쌍이 설치되고, 상기 거더(10)의 외측경간의 내측부분 복부(16) 양측면 측면정착블록(20)에는 보수보강용 정착부(60)만 한 쌍이 설치되며, 상기 거더(10)의 내측경간의 양단부 부분 복부(16) 양측면 측면정착블록(20)에는 보수보강용 정착부(60)만 각각 한 쌍이 설치된다.Here, a pair of secondary tension sequential tension fixing unit 40 and a pair of reinforcing fixing unit 60 are installed on both sides of the outer side abdomen 16 of the outer section of the girder 10. In addition, a pair of repair reinforcing fixing parts 60 are installed in the inner side of the inner portion of the outer portion of the girder 10 and the side surface fixing block 20 at both sides 16, and both ends of the inner portion of the girder 10 are provided. Both sides of the abdomen 16, the side fixing block 20 is provided with a pair of maintenance reinforcing fixing unit 60, respectively.
또한, 상기 측면정착블록(20)은 평면도 기준으로 마름모꼴 형상의 콘크리트 블록으로 거더(10)의 상, 하부플랜지(12, 14)에 걸쳐서 복부(16)에 일정두께로 설치된다.In addition, the side fixing block 20 is a concrete block of a rhombic shape on the basis of a plan view is installed on the abdomen 16 over the upper, lower flanges 12, 14 of the girder 10 to a predetermined thickness.
그리고, 상기 보수보강용 정착부(60)에는 강재정착구 형상의 거푸집(46)으로 콘크리트면(48)을 형성하고, 보수보강용 쉬스(50)만 삽입 정착된 구조이다.In addition, the reinforcing reinforcing fixing unit 60 has a concrete surface 48 formed of a steel fixture fitting form 46, and only the reinforcing reinforcing sheath 50 is inserted and fixed.
이하, 상기한 바와 같은 구성으로 이루어진 본 발명에 따른 프리스트레스트 철근 콘크리트 거더의 시공에 대해 설명한다.Hereinafter, the construction of the prestressed reinforced concrete girder according to the present invention having the configuration as described above.
본 발명에 따른 프리스트레스트 철근 콘크리트 거더 시공방법은 연속교 프리스트레스트 철근 콘크리트 거더 시공방법에 있어서, 상, 하부플랜지(12, 14) 및 복부(16)로 이루어지는 거더(10)와; 상기 거더(10)의 양측면에 일정한 폭과 너비로 돌출 설치된 측면정착블록(20)과; 상기 측면정착블록(20)의 상단부에는 2차 긴장겸용 연속화 긴장용 PC강선(30)의 긴장을 위하여 각각 설치되면서 강재정착구(44)와 2차 긴장겸용 연속화 긴장용 쉬스(42) 및 2차 긴장겸용 연속화 긴장용 PC강선(30)이 고정 설치된 2차 긴장겸용 연속화 긴장용 정착부(40)와; 상기 2차 긴장겸용 연속화 긴장용 정착부(40)의 하부측 측면정착블록(20)에는 강재정착구(44)와 PC강선이 설치되지 않고, 보수보강용 쉬스(50) 만 고정 설치된 보수보강용 정착부(60)로 구성되는 프리스트레스트 철근 콘크리트 거더(10)의 외측경간의 외측부분 복부(16) 양측면의 측면정착블록(20)에 2차 긴장겸용 연속화 긴장용 정착부(40) 한 쌍과 보수보강용 정착부(60) 한 쌍을 설치하고, 상기 거더(10)의 외측경간의 내측부분 복부(16) 양측면에 측면정착블록(20)에 보수보강용 정착부(60)만 한 쌍을 설치하며, 상기 거더(10)의 내측경간의 양단부 부분 복부(16) 양측면에 측면정착블록(20)에는 보수보강용 정착부(60)만 각각 한 쌍을 설치하여, 프리스트레스트 철근 콘크리트 거더(10)에 1차 긴장 PC강선(70)을 1차 긴장하여 교대, 교각에 거치 후, 바닥판 슬래브 콘크리트를 타설한 후, 2차 긴장 겸용 연속화 긴장용 정착부(40)에서 연속화하는 전 경간에 걸쳐 일괄적으로 2차 긴장겸용 연속화 긴장용 PC강선(30)을 긴장하고, 보수보강용 정착부(60)에서 단경간 단위로 각각 추가 긴장한다.Prestressed reinforced concrete girder construction method according to the present invention is a continuous bridge prestressed reinforced concrete girder construction method, the girder 10 consisting of the upper, lower flanges (12, 14) and the abdomen (16); Side fixing blocks 20 protruding at both sides of the girder 10 at a predetermined width and width; On the upper end of the side fixing block 20 is installed for the tension of the secondary tension combined sequencing tension PC steel wire 30, respectively, the steel fixture 44 and the secondary tension sequencing tension sheath 42 and the secondary tension A secondary tension combined tension fixing unit 40 having a combined continuous tension PC steel wire 30 fixed thereto; The lower side fixing block 20 of the secondary tension combined tension fixing unit 40 is not provided with the steel fixing hole 44 and the PC steel wire, the maintenance reinforcement fixing fixed installed only the sheath 50 for maintenance reinforcement A pair of secondary tension sequencing tension fixing parts 40 in the side fixing blocks 20 on both sides of the outer portion of the outer portion of the outer span of the prestressed reinforced concrete girder 10 constituted by the portion 60 and repaired A pair of reinforcing fixing units 60 is installed, and a pair of maintenance reinforcing fixing units 60 is installed at the side fixing blocks 20 on both sides of the inner side abdomen 16 of the outer span of the girder 10. And a pair of reinforcing reinforcing fixing parts 60 are respectively installed in the side fixing blocks 20 on both sides of both ends of the inner part of the girder 10 and the side abdomen 16, and the prestressed reinforced concrete girder 10 is installed. Primary tension PC steel wire (70) in the primary tension on the alternating, pier, and then slab concrete After pouring, tension the secondary tension combined continuous tensioning PC steel wire (30) collectively over the entire span that is continuous in the secondary tension combined continuous tension fixing unit (40), and fixing reinforcement unit (60) In addition, each additional strain in short span.
또한, 본 발명에 따른 프리스트레스트 철근 콘크리트 거더 시공방법은 단순교 프리스트레스트 철근 콘크리트 거더 시공방법에 있어서, 상, 하부플랜지(12, 14) 및 복부(16)로 이루어지는 거더(10)와; 상기 거더(10)의 양측면에 일정한 폭과 너비로 돌출 설치된 측면정착블록(20)과; 상기 측면정착블록(20)의 상단부에는 2차 긴장을 위하여 각각 설치되는 강재정착구(44)와 2차 긴장용 쉬스(42-1) 및 2차 긴장용 PC강선(30-1)이 고정 설치된 2차 긴장용 정착부(40-1)와; 상기 2차 긴장용 정착부(40-1)의 하부측 측면정착블록(20)에는 강재정착구와 PC강선이 설치되지 않고 보수보강용 쉬스(50)만 고정 설치되는 보수보강용 정착부(60)로 구성되는 프리스트레스트 철근 콘크리트 거더(10)의 양단부 부분 복부 양측면에 측면정착블록(20)을 정착하고, 상기 측면정착블록(20)의 상단부에 2차긴장용 정착부(40-1) 한 쌍과 강재정착구와 PC강선이 설치되지 않고 보수보강용 쉬스(50)만 설치된 보수보강용 정착부(60) 한 쌍을 설치하고, 프리스트레스트 철근 콘크리트 거더(10)에 1차 긴장하여 교대에 거치 후, 바닥판 콘크리트를 타설한 후 2차 긴장용 정착부(40-1)에서 2차 긴장을 하고, 공용중 보수보강이 필요한 경우 보수보강용 정착부(40-1)에서 강재정착구(44)와 PC강선(30-1)을 기설치된 보수보강용 쉬스(50)에 삽입 후, 보수보강 긴장을 한다.In addition, the prestressed reinforced concrete girder construction method according to the present invention is a simple bridge prestressed reinforced concrete girder construction method, the girder 10 consisting of the upper, lower flanges (12, 14) and the abdomen (16); Side fixing blocks 20 protruding at both sides of the girder 10 at a predetermined width and width; The upper portion of the side fixing block 20 is fixed to the steel fixtures 44 and secondary tension sheath 42-1 and secondary tension PC steel wire (30-1) are respectively installed for the secondary tension 2 A car tension fixing unit 40-1; The lower side fixing block 20 of the secondary tension fixing unit 40-1 is not provided with steel fixing holes and PC steel wires, and the fixing reinforcement fixing unit 60 is fixed and installed only with the reinforcing sheath 50. A side fixing block 20 is fixed to both sides of the abdominal both sides of the prestressed reinforced concrete girder 10 composed of a pair of secondary tension fixing units 40-1 at the upper end of the side fixing block 20. After installing a pair of reinforcing reinforcing fixing parts 60 installed only with the sheath 50 for the reinforcing reinforcement without the steel anchoring hole and the PC steel wire, and after preliminarily straining the prestressed reinforced concrete girder 10 to the shift , After placing the bottom plate concrete, the secondary tension in the secondary tension fixing unit (40-1), and if the maintenance reinforcement is required during the common reinforcement fixing unit (40-1) and the steel anchoring hole (44) After inserting the PC steel wire (30-1) to the pre-installed reinforcement sheath 50, the reinforcement tension.
여기서, 상기 보수보강용 정착부(60)에는 쉬스(50)만 사전에 삽입 정착하고, 상기 강재정착구(44)에는 강재정착구 형상의 거푸집(46)을 설치하여 콘크리트를 타설 및 양생한 후 거푸집(46)을 제거하여 강재정착구(44)가 삽입될 콘크리트면(48)을 형성하고, 공용중 보수보강의 필요가 있는 경우에는 상기 콘크리트면(48)에 강재정착구(44)를 삽입한 후, 에폭시 또는 무수축몰탈로 콘크리트면(48)과 강재정착구(44) 사이의 유간을 충전한 후, PC강선을 삽입하여 보수보강 긴장한다.Here, only the sheath 50 is inserted into and fixed in advance in the maintenance reinforcing fixing unit 60, and the steel fixing fitting 44 is provided with a steel fitting fitting-shaped formwork 46 to pour and cure concrete, 46) to form the concrete surface 48 into which the steel fixture 44 is to be inserted, and if it is necessary to reinforcement in common, the steel fixture 44 is inserted into the concrete surface 48 and then epoxy Or after filling the clearance gap between the concrete surface 48 and the steel fittings 44 with the non-shrink mortar, the PC steel wire is inserted into the repair reinforcement tension.
상기한 바와 같은 방법으로 시공하는 본 발명에 따른 프리스트레스트 철근 콘크리트 거더의 연속교에 있어서는 1차 긴장은 거더(10)의 자중에 대응하고, 2차 긴장겸용 연속화 긴장은 활하중에 대응함과 동시에 거더(10)를 연속화시켜 저형고, 장경간의 연속교를 구현할 수 있고, 특히 공용중 보수보강에 있어서 장래에 법정하중조건의 상향이나 내하력의 저하가 발생하거나 거더(10)에 인장균열 등이 발생할 경우 별도의 강재 정착장치를 거더(10)의 외부에 부착함이 없이 간단하게 보수보강함으로 거더(10)의 외부에 강재정착장치와 PC강선 부착 등에 따른 거더(10)의 손상과 미관의 훼손을 방지하고, 가장 저렴하고 간단하게 보수보강을 할 수 있는 작용효과가 있다.In the continuous bridge of the prestressed reinforced concrete girder according to the present invention constructed by the above-described method, the primary tension corresponds to the weight of the girder 10, and the secondary tension combined sequential tension corresponds to the live load and at the same time the girder ( 10) can be realized by continuous bridges between low profile and long spans, and especially in the case of maintenance reinforcement during common use, if the statutory load condition is raised in the future, the load capacity decreases, or tensile cracking occurs in the girder 10, By simply reinforcing and repairing the steel fixing device without attaching it to the outside of the girder 10, it prevents damage to the girder 10 and damage to the appearance due to the attachment of the steel fixing device and the PC steel wire to the outside of the girder 10. In addition, it is the cheapest and simply effective reinforcement.

Claims (8)

  1. 연속교 프리스트레스트 철근 콘크리트 거더에 있어서, In continuous bridge prestressed reinforced concrete girder,
    상, 하부플랜지(12, 14) 및 복부(16)로 이루어지는 거더(10)와; 상기 거더(10)의 양측면에 일정한 폭과 너비로 돌출 설치된 측면정착블록(20)과; A girder 10 including upper and lower flanges 12 and 14 and an abdomen 16; Side fixing blocks 20 protruding at both sides of the girder 10 at a predetermined width and width;
    상기 측면정착블록(20)의 상단부에는 2차 긴장겸용 연속화 긴장을 위하여 각각 설치되면서 강재정착구(44)와 쉬스(42) 및 연속화 PC강선(30)이 고정 설치된 2차 긴장겸용 연속화 긴장용 정착부(40)와;The secondary tension combined stiffening fixing part installed at the upper end of the side fixing block 20 for the secondary tension combined sequential tension, respectively, the steel fixing holes 44 and the sheath 42 and the continuous PC steel wire 30 are fixed. 40;
    상기 2차 긴장겸용 연속화 긴장용 정착부(40)의 하부측 측면정착블록(20)에는 강재정착구와 PC강선이 설치되지 않고, 보수보강용 쉬스(50)만 고정 설치된 보수보강용 정착부(60)로 구성됨을 특징으로 하는 프리스트레스트 철근 콘크리트 거더.The lower side fixing block 20 of the secondary tension combined tension fixing unit 40 is not provided with the steel anchoring hole and PC steel wire, the maintenance reinforcement fixing unit 60 is installed fixed only the sheath 50 for maintenance reinforcement (60) Prestressed reinforced concrete girder, characterized in that consisting of).
  2. 단순교 프리스트레스트 철근 콘크리트 거더에 있어서,In the simple bridge prestressed reinforced concrete girder,
    상, 하부플랜지(12, 14) 및 복부(16)로 이루어지는 거더(10)와; 상기 거더(10)의 양측면에 일정한 폭과 너비로 돌출 설치된 측면정착블록(20)과; 상기 측면정착블록(20)의 상단부에는 2차 긴장을 위하여 각각 설치되는 강재정착구(44)와 쉬스(42-1) 및 2차 긴장용 PC강선(30-1)이 고정 설치된 2차 긴장용 정착부(40-1)와; 상기 2차 긴장용 정착부(40-1)의 하부측 측면정착블록(20)에는 강재정착구와 PC강선이 설치되지 않고 보수보강용 쉬스(50)만 고정 설치되는 보수보강용 정착부(60)로 구성됨을 특징으로 하는 프리스트레스트 철근 콘크리트 거더.A girder 10 including upper and lower flanges 12 and 14 and an abdomen 16; Side fixing blocks 20 protruding at both sides of the girder 10 at a predetermined width and width; The upper tension of the side fixing block 20 is fixed to the secondary tension anchoring hole 44 and the sheath 42-1 and secondary tension PC steel wire (30-1) are respectively installed for secondary tension fixing Section 40-1; The lower side fixing block 20 of the secondary tension fixing unit 40-1 is not provided with steel fixing holes and PC steel wires, and the fixing reinforcement fixing unit 60 is fixed and installed only with the reinforcing sheath 50. Prestressed reinforced concrete girder, characterized in that consisting of.
  3. 제 1항에 있어서,The method of claim 1,
    상기 거더(10)의 외측경간 외측부분 복부(16) 양측면 측면정착블록(20)에는 2차 긴장겸용 연속화 긴장용 정착부(40) 한 쌍과 보수보강용 정착부 한 쌍(60)이 설치되고, 상기 거더(10)의 외측경간의 내측부분 복부(16) 양측면 측면정착블록(20)에는 보수보강용 정착부(60)만 한 쌍이 설치되며, 상기 거더(10)의 내측경간의 양단부 부분 복부(16) 양측면 측면정착블록(20)에는 보수보강용 정착부(60)만 각각 한 쌍이 설치됨을 특징으로 하는 프리스트레스트 철근 콘크리트 거더.A pair of secondary tension sequential tension fixing units 40 and a pair of reinforcing reinforcing fixing units 60 are installed on both side surface fixing blocks 20 on both sides of the outer section of the girder 10. In addition, only a pair of maintenance reinforcing fixing parts 60 are installed in the inner side abdominal portion 16 of the outer side section 16 of the girder 10, and both end portions of the inner girder 10 of the girder 10 are provided. (16) Prestressed reinforced concrete girder, characterized in that only one pair of both sides of the side fixing block 20 is installed in the reinforcement fixing unit 60.
  4. 제 1항 또는 제 2항에 있어서,The method according to claim 1 or 2,
    상기 측면정착블록(20)은 평면도 기준으로 마름모꼴 형상의 콘크리트 블록으로 거더(10)의 상, 하부플랜지(12, 14)에 걸쳐서 복부(16)에 일정두께로 구성됨을 특징으로 하는 프리스트레스트 철근 콘크리트 거더.The side fixing block 20 is a prestressed reinforced concrete, characterized in that the concrete block of the rhombic shape on the basis of the plan view on the abdomen 16 over the upper, lower flanges (12, 14) of the girder (10) Girder.
  5. 제 1항 또는 제 2항에 있어서,The method according to claim 1 or 2,
    상기 보수보강용 정착부(60)에는 강재정착구 형상의 거푸집(46)으로 콘크리트면을 형성하고, 쉬스(50)만 삽입 정착됨을 특징으로 하는 프리스트레스트 철근 콘크리트 거더.Prestressed reinforced concrete girder, characterized in that the concrete reinforcement is formed in the form of the steel fixing fixture 46, the only sheath 50 is inserted into the repair reinforcement fixing unit (60).
  6. 연속교 프리스트레스트 철근 콘크리트 거더 시공방법에 있어서,In the continuous bridge prestressed reinforced concrete girder construction method,
    상, 하부플랜지(12, 14) 및 복부(16)로 이루어지는 거더(10)와; 상기 거더(10)의 양측면에 일정한 폭과 너비로 돌출 설치된 측면정착블록(20)과; 상기 측면정착블록(20)의 상단부에는 2차 긴장겸용 연속화 긴장을 위하여 각각 설치되면서 강재정착구(44)와 쉬스(42) 및 PC강선(30)이 고정 설치된 2차 긴장겸용 연속화 긴장용 정착부(40)와; 상기 2차 긴장겸용 연속화 긴장용 정착부(40)의 하부측 측면정착블록(20)에는 강재정착구와 PC강선이 설치되지 않고, 보수보강용 쉬스(50) 만 고정 설치된 보수보강용 정착부(60)로 구성되는 프리스트레스트 철근 콘크리트 거더(10)의 외측경간의 외측부분 복부(16) 양측면의 측면정착블록(20)에 2차 긴장겸용 연속화 긴장용 정착부(40) 한 쌍과 보수보강용 정착부(60) 한 쌍을 설치하고, 상기 거더(10)의 외측경간의 내측부분 복부(16) 양측면에 측면정착블록(20)에 보수보강용 정착부(60)만 한 쌍을 설치하며, 상기 거더(10)의 내측경간의 양단부 부분 복부(16) 양측면에 측면정착블록(20)에는 보수보강용 정착부(60)만 각각 한 쌍을 설치하여, 프리스트레스트 철근 콘크리트 거더(10)에 1차 긴장 PC강선(70)을 1차 긴장하여 교대, 교각에 거치 후, 바닥판 슬래브 콘크리트를 타설한 후, 2차 긴장 겸용 연속화 긴장용 정착부(40)에서 연속화하는 전 경간에 걸쳐 일괄적으로 2차 긴장 및 연속화 PC강선(30)을 긴장하고, 보수보강용 정착부(60)에서 단경간 단위로 각각 추가 긴장함을 특징으로 하는 프리스트레스트 철근 콘크리트 거더 시공방법.A girder 10 including upper and lower flanges 12 and 14 and an abdomen 16; Side fixing blocks 20 protruding at both sides of the girder 10 at a predetermined width and width; The secondary tension combined stiffening fixing unit installed on the upper end of the side fixing block 20 for fixing the secondary tension combined sequencing tension, respectively, the steel fixture 44, the sheath 42 and the PC steel wire 30 are fixed ( 40); The lower side fixing block 20 of the secondary tension combined tension fixing unit 40 is not provided with the steel anchoring hole and the PC steel wire, the maintenance reinforcement fixing unit 60 is installed only fixed to the reinforcement sheath 50 A pair of secondary tension sequencing tension fixing units 40 and a reinforcing reinforcing fixing unit on the side fixing blocks 20 on both sides of the outer portion of the outer section of the prestressed reinforced concrete girder 10 consisting of A pair of parts 60 is installed, and only a pair of maintenance reinforcing fixing parts 60 are installed in the side fixing blocks 20 at both sides of the inner side abdomen 16 of the outer span of the girder 10, A pair of repair reinforcing fixing units 60 are respectively installed in the side fixing blocks 20 at both end portions of the inner end of the girder 10 at both sides of the abdomen 16, and the first prestressed reinforced concrete girder 10 is installed. Tension PC steel wire (70) to the primary tension, after the alternating, pier, the slab concrete slab After the snow, the secondary tension and the continuous PC steel wire 30 is tensioned in a batch over the entire span that is continuous in the secondary tension combined sequencing tension fixing unit 40, and the short span in the fixing unit 60 for maintenance reinforcement. Prestressed reinforced concrete girder construction method characterized by additional tension in each unit.
  7. 단순교 프리스트레스트 철근 콘크리트 거더 시공방법에 있어서,In the simple bridge prestressed reinforced concrete girder construction method,
    상, 하부플랜지(12, 14) 및 복부(16)로 이루어지는 거더(10)와; 상기 거더(10)의 양측면에 일정한 폭과 너비로 돌출 설치된 측면정착블록(20)과; 상기 측면정착블록(20)의 상단부에는 2차 긴장을 위하여 각각 설치되는 강재정착구(44)와 쉬스(42-1) 및 2차 긴장용 PC강선(30-1)이 고정 설치된 2차 긴장용 정착부(40-1)와; 상기 2차 긴장용 정착부(40-1)의 하부측 측면정착블록(20)에는 강재정착구와 PC강선이 설치되지 않고 보수보강용 쉬스(50)만 고정 설치되는 보수보강용 정착부(60)로 구성되는 프리스트레스트 철근 콘크리트 거더(10)의 양단부 부분 복부 양측면에 측면정착블록(20)을 정착하고, 상기 측면정착블록(20)의 상단부에 2차긴장용 정착부(40-1) 한 쌍과 강재정착구와 PC강선이 설치되지 않고 보수보강용 쉬스(50)만 설치된 보수보강용 정착부(60) 한 쌍을 설치하고, 프리스트레스트 철근 콘크리트 거더(10)에 1차 긴장하여 교대에 거치 후, 바닥판 콘크리트를 타설한 후 2차 긴장용 정착부(40-1)에서 2차 긴장을 하고, 공용중 보수보강이 필요한 경우 보수보강용 정착부(40-1)에서 강재정착구(44)와 PC강선(30-1)을 기설치된 보수보강용 쉬스(50)에 삽입 후, 보수보강 긴장을 하는 것을 특징으로 하는 프리스트레스트 철근 콘크리트 거더 시공방법.A girder 10 including upper and lower flanges 12 and 14 and an abdomen 16; Side fixing blocks 20 protruding at both sides of the girder 10 at a predetermined width and width; The upper tension of the side fixing block 20 is fixed to the secondary tension anchoring hole 44 and the sheath 42-1 and secondary tension PC steel wire (30-1) are respectively installed for secondary tension fixing Section 40-1; The lower side fixing block 20 of the secondary tension fixing unit 40-1 is not provided with steel fixing holes and PC steel wires, and the fixing reinforcement fixing unit 60 is fixed and installed only with the reinforcing sheath 50. A side fixing block 20 is fixed to both sides of the abdominal both sides of the prestressed reinforced concrete girder 10 composed of a pair of secondary tension fixing units 40-1 at the upper end of the side fixing block 20. After installing a pair of reinforcing reinforcing fixing parts 60 installed only with the sheath 50 for the reinforcing reinforcement without the steel anchoring hole and the PC steel wire, and after preliminarily straining the prestressed reinforced concrete girder 10 to the shift , After placing the bottom plate concrete, the secondary tension in the secondary tension fixing unit (40-1), and if the maintenance reinforcement is required during the common reinforcement fixing unit (40-1) and the steel anchoring hole (44) After the PC steel wire (30-1) is inserted into the pre-installed reinforcement sheath (50), the reinforcement tension is to be tensioned Prestressed reinforced concrete girder construction method according to claim.
  8. 제 6항 또는 제 7항에 있어서,The method according to claim 6 or 7,
    상기 보수보강용 정착부(60)에는 쉬스(50)만 사전에 삽입 정착하고, 상기 강재정착구(44)에는 강재정착구 형상의 거푸집(46)을 설치하여 콘크리트를 타설 및 양생한 후 거푸집(46)을 제거하여 강재정착구(44)가 삽입될 콘크리트면(48)을 형성하고, 공용중 보수보강의 필요가 있는 경우에는 상기 콘크리트면(48)에 강재정착구(44)를 삽입한 후, 에폭시 또는 무수축몰탈로 콘크리트면(48)과 강재정착구(44) 사이의 유간을 충전한 후, PC강선을 삽입하여 보수보강 긴장함을 특징으로 하는 프리스트레스트 철근 콘크리트 거더 시공방법. Only the sheath 50 is inserted and fixed in advance in the repair reinforcing fixing unit 60, and the steel fitting hole 44 is provided with a steel mold fitting shape 46 to pour and cure concrete, and then form the mold 46. After removing the steel fixture 44 to form a concrete surface 48 to be inserted, if the need for maintenance reinforcement in common, after inserting the steel fixture 44 to the concrete surface 48, epoxy or no Prestressed reinforced concrete girder construction method characterized in that the reinforcement tension by inserting a PC steel wire after filling the gap between the concrete surface 48 and the steel fixing hole 44 by the shrinkage mortar.
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CN113021584A (en) * 2021-03-04 2021-06-25 临沂市政集团有限公司 Pre-tensioning prestressed hollow slab umbrella support splicing type core mold and construction process thereof
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