WO2014200272A9 - Pre-stressed concrete girder segment having improved cross-sectional stiffness - Google Patents

Pre-stressed concrete girder segment having improved cross-sectional stiffness Download PDF

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Publication number
WO2014200272A9
WO2014200272A9 PCT/KR2014/005148 KR2014005148W WO2014200272A9 WO 2014200272 A9 WO2014200272 A9 WO 2014200272A9 KR 2014005148 W KR2014005148 W KR 2014005148W WO 2014200272 A9 WO2014200272 A9 WO 2014200272A9
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section
girder
segment
tension
segment girder
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PCT/KR2014/005148
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French (fr)
Korean (ko)
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WO2014200272A1 (en
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노경범
노우현
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우경기술주식회사
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Publication of WO2014200272A1 publication Critical patent/WO2014200272A1/en
Publication of WO2014200272A9 publication Critical patent/WO2014200272A9/en

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed

Definitions

  • the present invention relates to a prestressed concrete segment girder with increased cross-sectional rigidity, more specifically, the cross section of the segment girder of the parent moment section is provided in a box shape, the cross section of the segment girder of the constant moment section is provided in I or T shape It is possible to increase the stiffness of the cross section of the girder, and the PS steel wire fixing unit is provided at the part where the parent moment section and the constant moment section are in contact, so that the continuous connection fixing unit can be configured in various ways.
  • the present invention relates to a prestressed concrete segment girder with increased cross-section stiffness, which enables economical low height and long span, by increasing the performance of the structure and freely constructing the tension of the segment girder according to the construction process.
  • prestressed reinforced concrete girders with steel wires installed in reinforced concrete have a limit to the tension to which steel wires can be introduced due to tensile cracks on the top of the prestressed concrete girder when steel wires are introduced into the steel wires.
  • the bridge is unable to withstand the tensile force generated by the positive and secondary moments acting on the prestressed reinforced concrete girder over time, causing cracks in the bottom plate concrete of the parent section or cracks in the lower part of the prestressed reinforced concrete girder.
  • the bridge not only causes corrosion of the reinforcing bars due to cracking, but also reduces the adhesion of concrete and reinforcing bars due to air pollution, thereby seriously affecting the strength of the prestressed reinforced concrete girder, thereby reducing the life of the bridge.
  • it is very difficult to replace the bottom plate or reinforce the PS steel wire from the outside, and thus the construction cost increases.
  • the conventional PSC I-segment girder has a problem in that the rigidity of the parent moment section and the constant moment section, which are the pier point portions, in the cross section is not large, resulting in technical constraints for low solidification and long span.
  • the present invention is provided with a cross section of the segment girder of the parent moment section, and the cross section of the segment girder of the constant moment section is provided in an I or T shape to increase the cross stiffness of the girder prestress.
  • the purpose is to provide a concrete segment girder.
  • the present invention is provided with a PS steel wire fixing unit in the contact portion of the alternating side end portion and the alternating side end portion of the constant moment section and the contact portion between the parent moment section and the constant moment section is configured in various ways such as continuous connection tension and maintenance tension
  • the purpose is to provide a prestressed concrete segment girder that can.
  • the present invention can increase the performance of the connection joint by using the additional fixing unit as described above, and can be freely construction of the tension of the segment girder step by step according to the construction process economical low-profile and long-span cross-sectional rigidity The purpose is to provide increased prestressed concrete segment girder.
  • the constant moment segment girder and the parent moment segment girder are mounted on the alternating, pier and construction vents, and then continuously connected to the primary tension PS steel wire at the alternating end and the alternating side abdomen of the constant moment segment girder.
  • the purpose of the present invention is to provide prestressed concrete segment girder with increased cross-sectional stiffness that can be used for long span construction.
  • the present invention is to make the segment height girders separately, the cross section stiffness which can efficiently form the low height and long span by the first, second, third order tension in consideration of the load applied to the girders at each construction stage
  • the purpose is to provide increased prestressed concrete segment girder.
  • the prestressed concrete segment girder with increased cross stiffness of the present invention is a PSC I-segment girder composed of a segment part girder, a positive moment,
  • the constant moment segment girder 100 is composed of an I-type or T-shaped cross section in which the upper and lower flanges 110 and 120 and the abdomen 130 are separated, and the cross section at both ends and the alternate point portion 140 are constant.
  • Section of the abdomen 130 located in the section consists of a box-shaped cross section,
  • the parent portion segment girder 200 is characterized in that the front end surface consisting of a box-shaped cross section.
  • moment moment segment girder 100 is the primary tension fixing unit 150 provided on both sides of the lower lower end;
  • a continuous connection primary tension fixing unit 160 provided to be spaced apart at regular intervals up and down on the one side primary tension fixing unit 150;
  • the parent portion segment girder 200 includes a primary tension fixing unit 210 provided at both upper and lower ends.
  • the constant moment segment girder 100 is tensioned in a straight line from the bottom by the primary oscillation PS steel wire 300
  • the parent portion segment girder 200 is the upper and lower by the primary tension PS steel wire 300 In a straight line is strained.
  • constant moment segment girder 100 and the parent moment segment girder 200 are mounted on an alternating, pier, and construction vent, and then the alternating side end and the alternating side end portion 130 of the constant moment segment girder 100.
  • Continuous and primary moment segment girder (100, 200) is integrally connected and connected to all sections by the continuous connection primary tension PS steel wire (400) and continuous connection secondary tension and maintenance PS steel wire (500). do.
  • the positive and negative moment segment segments girder (100 and 200) are connected to the continuous third tertiary tension fixing unit (180) provided at the outer box-shaped cross section of the positive moment segment girder (100). ) Is continuously connected and joined in units of the parent section section 800 of the parent section segment girder 200.
  • the cross section of the segment girder of the parent moment section is provided in a box shape, and the cross section of the segment girder of the constant moment section is provided in an I or T shape to increase the cross-sectional rigidity of the girder. It works.
  • the present invention has an effect that the PS steel wire fixing unit is provided in a portion where the parent moment section and the constant moment section are in contact with each other to further configure the continuous connection fixing unit.
  • the present invention can increase the performance of the connection joint using the additional fixing unit as described above, can be freely construction of the tension of the segment girder step by step according to the construction process has the effect of economical low height and long span .
  • the constant moment segment girder and the parent moment segment girder are mounted on the alternating, pier and construction vents, and then continuously connected to the primary tension PS steel wire at the alternating end and the alternating side abdomen of the constant moment segment girder. Continuous connection to the part where the secondary tension and maintenance PS steel wire is in contact with the positive moment section and the parent moment section.
  • the construction method has the effect that can be installed in long span.
  • the present invention has the effect of efficiently forming the low height and long span by making the first, second, third order tension in consideration of the load applied to the girder in the construction stage by separately manufacturing the girder part and the moment moment segment girder .
  • the prestressed concrete segment girder with increased cross stiffness of the present invention is a PSC I-segment girder composed of a segment part girder, a positive moment,
  • the forward moment segment girder 100 is composed of an I-type or T-shaped cross section of the upper and lower flanges (110, 120) and the abdomen 130, the cross-sections of both ends and the alternating point portion (140)
  • the abdomen 130 cross section located in a predetermined section is composed of a box-shaped cross section,
  • the parent portion segment girder 200 is characterized in that the front end surface consisting of a box-shaped cross section.
  • moment moment segment girder 100 is the primary tension fixing unit 150 provided on both sides of the lower lower end;
  • a continuous connection primary tension fixing unit 160 provided to be spaced apart at regular intervals up and down on the one side primary tension fixing unit 150;
  • the parent portion segment girder 200 includes a primary tension fixing unit 210 provided at both upper and lower ends.
  • the constant moment segment girder 100 is tensioned in a straight line from the bottom by the primary oscillation PS steel wire 300
  • the parent portion segment girder 200 is the upper and lower by the primary tension PS steel wire 300 In a straight line is strained.
  • constant moment segment girder 100 and the parent moment segment girder 200 are mounted on an alternating, pier, and construction vent, and then the alternating side end and the alternating side end portion 130 of the constant moment segment girder 100.
  • Continuous and primary moment segment girder (100, 200) is integrally connected and connected to all sections by the continuous connection primary tension PS steel wire (400) and continuous connection secondary tension and maintenance PS steel wire (500). do.
  • the positive and negative moment segment segments girder (100 and 200) are connected to the continuous third tertiary tension fixing unit (180) provided at the outer box-shaped cross section of the positive moment segment girder (100). ) Is continuously connected and joined in units of the parent section section 800 of the parent section segment girder 200.
  • the prestressed concrete segment girder of the present invention configured as described above is provided with a cross section of the segment girder of the parent moment section, the cross section of the segment girder of the constant moment section is provided in the I or T shape to increase the cross-sectional rigidity of the girder It works.
  • the present invention has an effect that the PS steel wire fixing unit is provided in a portion where the parent moment section and the constant moment section are in contact with each other to further configure the continuous connection fixing unit.
  • the present invention can increase the performance of the connection joint using the additional fixing unit as described above, can be freely construction of the tension of the segment girder step by step according to the construction process has the effect of economical low height and long span .
  • the constant moment segment girder and the parent moment segment girder are mounted on the alternating, pier and construction vents, and then continuously connected to the primary tension PS steel wire at the alternating end and the alternating side abdomen of the constant moment segment girder. Continuous connection to the part where the secondary tension and maintenance PS steel wire is in contact with the positive moment section and the parent moment section.
  • the construction method has the effect that can be installed in long span.
  • the present invention has the effect of efficiently forming the low height and long span by making the first, second, third order tension in consideration of the load applied to the girder in the construction stage by separately manufacturing the girder part and the moment moment segment girder .
  • FIG. 1 is an exemplary view showing a PSC I-type segment girder with a positive moment moment in accordance with the present invention.
  • Figure 2 is an exemplary view showing the front of the positive and negative moment portion PSC I-segment girder according to the present invention.
  • Figure 3 is an exemplary view showing a constant moment portion PSC I-segment girder in accordance with the present invention
  • Figure 4 is an exemplary view showing the front of the constant moment portion PSC I-segment girder in accordance with the present invention.
  • FIG. 5 is an exemplary view showing a cross section taken along the line F-F in the line A-A of FIG.
  • Figure 6 is an exemplary view showing a state in which the continuous connection primary tension PS steel and the continuous connection secondary tension and maintenance PS steel wire installed in the constant moment portion PSC I-segment girder according to the present invention.
  • Figure 7 is an exemplary view showing a parent portion PSC type I segment girder according to the present invention.
  • Figure 8 is an exemplary view showing the front of the parent cement portion PSC I-segment girder according to the present invention.
  • FIG. 9 is an exemplary view showing a cross-section C'-C 'in the line A'-A' of FIG.
  • FIG. 10 is an exemplary view showing a state in which the continuous connection primary tension PS steel and the continuous connection secondary tension and maintenance PS steel wire installed in the parent portion PSC I-type segment girder according to the present invention.
  • FIG. 12 is an exemplary view showing another embodiment of the PSC I-type segment girder with the positive and negative moment portion according to the present invention.
  • FIG. 13 is an exemplary view showing a state in which the continuous connection third tension fixing unit and the continuous connection third tension PS steel wire is installed in another embodiment of the positive and negative moment portion PSC I-segment girder according to the present invention.
  • FIG. 14 is an exemplary view showing a T-shaped segment girder as another example of the positive and negative moment portion PSC according to the present invention.
  • FIG. 15 is an exemplary view showing a front surface of a T-type segment girder as another example of the positive and negative moment portion PSC according to the present invention.
  • 16 is an exemplary view showing a T-shaped segment girder as another example of the constant moment portion PSC according to the present invention.
  • Figure 17 is an illustration showing the front of the T-shaped segment girder as another example of the constant moment portion PSC according to the present invention.
  • 18 is an exemplary view showing a cross section taken along the line F-F in the line A-A of FIG.
  • 19 is an exemplary view showing a state in which a continuous connection primary tension PS steel and a continuous connection secondary tension and maintenance PS steel wires are installed in the constant moment PSC T-segment girder which is another example of the present invention.
  • Prestressed concrete segment girder of the present invention is installed in a bridge of various forms, such as three or four spans, although not shown in two or as shown in Figure 1 and 2.
  • the first moment segment segment girder 100 is composed of an I-shaped cross section in which upper and lower flanges 110 and 120 and the abdomen 130 are divided as shown in FIGS. 3 and 4.
  • the abdomen 130 located in a predetermined section near the cross section and the alternate point portion 140 of both ends is composed of a box-shaped cross section.
  • the parent cement segment girder 200 includes a box-shaped cross section in which the upper flange 210 protrudes slightly to both sides.
  • the constant moment segment girder 100 is provided with a primary tension fixing unit 150 on both sides of the lower lower end, continuous to be spaced apart at regular intervals up and down on the upper portion of the primary tension fixing unit 150 provided on one side.
  • Connection primary tension fixing unit 160 is provided.
  • a continuous connection secondary tension and maintenance fixing unit 170 is provided at the side of the abdomen 130 having a box-shaped cross section inside the continuous connecting primary tension fixing unit 160.
  • the section of the alternating point portion 140 and the portion of the alternating point portion 140 of the I-type girder and the section of the pier point portion have a box-shaped cross section, and other sections than the above section.
  • a continuous connection primary PS steel wire 300 having one end coupled to the primary tension fixing unit 150 is provided at the lower portion of the I-shaped cross section of the BB line cross-section, and the continuous connecting primary tension fixing unit is formed at the center of the I-shaped cross section.
  • One end is coupled to the 160 is connected to the first tension PS steel wire 400 is continuous.
  • a primary tension PS steel wire 300 spaced to the left and right is provided at a lower portion of the cross section of the CC line I shape, and a continuous connection primary tension PS steel wire 400 spaced vertically to the upper portion of the primary tension PS steel wire 300.
  • the abdominal side end of the portion where the I-shaped cross section and the box-shaped cross section is provided with a secondary connection and maintenance fixing unit 170 for continuous connection to both sides.
  • a primary tension PS steel wire 300 spaced to the left and right is provided at a lower portion of the cross section of the DD line I shape, and a continuous connection primary tension PS steel wire 400 spaced up and down on the upper portion of the primary tension PS steel wire 300.
  • a continuous connection primary tension PS steel wire 400 spaced up and down on the upper portion of the primary tension PS steel wire 300.
  • the upper portion of the continuous connection primary tension PS steel wire 400 is provided with a continuous connection secondary tension and maintenance PS steel wire 500 spaced up and down.
  • a pair of primary tension PS steel wires 300 are provided at a lower portion of the cross section of the EE line I-shape, and two consecutive connection primary tension PSs are spaced up and down on the pair of primary tension PS steel wires 300.
  • a steel wire 400 is provided, and a pair of continuous connection secondary tension and maintenance PS steel wires 50 are respectively provided on the continuous connection primary tension PS steel wire 400.
  • the lower end of the cross-sectional shape of the FF line box is provided with a primary tension fixing unit 150 to be spaced apart at regular intervals
  • the upper tension fixing unit 150 is connected to the upper and lower continuous connecting primary tension PS steel wire ( 400 is provided, the continuous connection primary tension PS steel wire 400, the upper and lower continuous connection secondary tension and maintenance PS steel wire 500 is provided, the continuous connection secondary tension and maintenance for The upper both sides of the PS steel wire 500 is provided with another continuous connection secondary tension and maintenance PS steel wire 500.
  • the parent cement segment girder 200 having the upper flange 210 protruding to both sides of the upper part has a box-shaped cross section, and is formed on both sides of the upper and lower ends of the upper part.
  • Tension fixing parts 220 are provided respectively.
  • the parent segment segment girder 200 is provided with a pair of primary tension fixing unit 220 so as to be spaced apart at regular intervals on the left and right AA line cross-section as shown in Figure 9,
  • a pair of continuous connection primary tension PS steel wires 400 are provided on the first tension fixing unit 220 so as to be spaced apart at regular intervals in the width direction, and the upper and lower upper portions of the continuous connection primary tension PS steel wires 400.
  • a pair of continuous connection secondary tension and maintenance PS steel wire 500 is provided so as to be spaced apart, and the second continuous connection so as to be spaced apart from the left and right on the continuous connection secondary tension and maintenance PS steel wire 500. Secondary tension and maintenance PS steel wire 500 is provided.
  • a pair of primary tension PS steel wires 300 one side of which is coupled to the primary tension fixing part 400, is provided at a lower portion of the cross-sectional shape of the BB line T, and an upper portion of the primary tension PS steel wires 300 is provided on the upper portion of the primary tension PS steel wire 300.
  • a pair of continuous connection primary tension PS steel wire 400 is spaced up and down is provided, the upper portion of the continuous connection primary tension PS steel wire 400 is connected to the vertical connection secondary tension and maintenance PS steel wire ( 500 is provided, and the second continuous connection secondary tension and maintenance PS steel wires 500 are spaced from side to side on both sides of the continuous connection secondary tension and maintenance PS steel wire 500, respectively.
  • the end of the CC line box shape is provided with a pair of primary tension fixing unit 220 and a pair of continuous connection primary tension PS steel wire 400, similar to AA line, continuous connection primary tension PS steel wire 400
  • the upper portion of the) is provided with a continuous connection secondary tension and maintenance PS steel wire 500 to be spaced up and down, spaced from the left and right to each side of the continuous connection secondary tension and maintenance PS steel wire 500, respectively. 2 is connected to the secondary tension and maintenance PS steel wire 500 is provided
  • the constant moment segment segment girder 100 is tensioned in a straight line from the bottom by the primary tension PS steel wire 300, and the parent segment segment girder ( 200 is tensioned in a straight line at the top and bottom by the primary PS steel wire (300).
  • the self-weight of the constant moment segment girder 100 is in charge of the primary tension PS steel wire 300 provided at the bottom
  • the self-weight of the parent portion segment girder 200 is the primary PS provided at the top and bottom, respectively
  • the steel wire 300 will be in charge.
  • the continuous connection primary tension fixing unit provided at both ends of the positive moment segment segment girder (100) (160) Continuously connecting and joining all sections of the positive and negative moment segment segment girders (100, 200) by the connected continuous connection primary tension PS steel wire (400).
  • the positive and negative moment segment segments girder 100 and 200 are continuously connected to the third tension fixing unit 180 provided in the outer box-shaped cross section of the positive moment segment segment girder 100 as shown in FIGS. 12 and 13.
  • the continuous connection to the third tension PS steel wire 600 can be carried out by the continuous connection and bonding in the unit of the parent section section 800 of the parent section segment girder 200 to tension.
  • the construction method of the PSC I-segment girder is the most efficient, low profile, long diameter by making the static girder segment segments girder (100, 200) and taking the tension in consideration of the loads to be charged at each construction stage. Girder bridge can be built.
  • upper flange 220 primary tension fixing unit

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Abstract

The present invention relates to a pre-stressed concrete girder segment having an improved cross-sectional stiffness so as to achieve low height and long span; wherein the cross section of the girder segment in a negative moment region is provided as a box shape, and the cross section of the girder segment in a positive moment region is provided as an I or T shape, thereby improving the cross-sectional stiffness of the girder; and wherein a PS steel wire anchor part is provided in an end part of the end support zone of the girder segment in the positive moment region, in a web part near the end support zone, and in a web part of the segment in the positive moment region where the negative moment region and the positive moment region adjoin each other, thereby facilitating the formation of various anchor parts such as a first tension anchor part, a second tension anchor part, a maintenance anchor part and a third tension anchor part. Using these additional anchor parts, the performance of a connection joint can be improved, and the tension of a girder segment can be freely constructed step-by-step according to the construction process, thereby being economical.

Description

단면 강성이 증가된 프리스트레스트 콘크리트 세그먼트 거더Prestressed Concrete Segment Girder with Increased Section Stiffness
본 발명은 단면 강성이 증가된 프리스트레스트 콘크리트 세그먼트 거더에 관한 것으로, 더욱 상세하게는 부모멘트 구간의 세그먼트 거더 단면이 박스 형상으로 구비되고, 정모멘트 구간의 세그먼트 거더의 단면은 I 또는 T형상으로 구비되어 거더의 단면 강성을 증대시킬 수 있고, 부모멘트 구간과 정모멘트 구간이 접하는 부분에 PS강선 정착부가 구비되어 연속연결 정착부 등을 다양하게 구성할 수 있으며, 이와 같은 추가적인 정착부를 이용하여 연결접합부의 성능을 증대시킬 수 있고, 시공과정에 따른 단계별로 세그먼트 거더의 긴장을 자유롭게 시공할 수 있어 경제적인 저형고 및 장경간화가 가능한 단면 강성이 증가된 프리스트레스트 콘크리트 세그먼트 거더에 관한 것이다.The present invention relates to a prestressed concrete segment girder with increased cross-sectional rigidity, more specifically, the cross section of the segment girder of the parent moment section is provided in a box shape, the cross section of the segment girder of the constant moment section is provided in I or T shape It is possible to increase the stiffness of the cross section of the girder, and the PS steel wire fixing unit is provided at the part where the parent moment section and the constant moment section are in contact, so that the continuous connection fixing unit can be configured in various ways. The present invention relates to a prestressed concrete segment girder with increased cross-section stiffness, which enables economical low height and long span, by increasing the performance of the structure and freely constructing the tension of the segment girder according to the construction process.
일반적으로 철근 콘크리트에 강선을 설치하여 긴장력을 도입한 프리스트레스트 철근 콘크리트 거더는 강선에 긴장력을 도입할 경우에는 프리스트레스트 콘크리트 거더의 상부에 인장력에 의한 균열로 인하여 강선을 도입할 수 있는 긴장력에 한계가 있으며, 프리스트레스트 철근 콘크리트 거더의 지간이 짧아지면서 프리스트레스트 철근 콘크리트 거더의 높이가 커지는 문제점이 있다.In general, prestressed reinforced concrete girders with steel wires installed in reinforced concrete have a limit to the tension to which steel wires can be introduced due to tensile cracks on the top of the prestressed concrete girder when steel wires are introduced into the steel wires. The shorter the length of the prestressed reinforced concrete girder is, the higher the height of the prestressed reinforced concrete girder is.
그리고 교량은 시간이 경과함에 따라 프리스트레스트 철근 콘크리트 거더에 작용하는 정·부모멘트에 의하여 발생되는 인장력을 견디지 못하여 부모멘트부분 바닥판 콘크리트에 균열이 발생되거나, 프리스트레스트 철근 콘크리트 거더의 하부에 균열이 발생하여 교량으로서의 기능을 다하지 못하는 문제점이 있다.In addition, the bridge is unable to withstand the tensile force generated by the positive and secondary moments acting on the prestressed reinforced concrete girder over time, causing cracks in the bottom plate concrete of the parent section or cracks in the lower part of the prestressed reinforced concrete girder. There is a problem that can not function as a bridge occurs.
또한 교량은 균열로 인하여 철근의 부식이 발생될 뿐만 아니라 대기오염으로 인한 콘크리트와 철근과의 부착력이 저하됨으로써 프리스트레스트 철근 콘크리트 거더의 강도에 심각한 영향을 주어 교량의 수명을 감소시키는 문제가 발생하게 되고, 교량의 보수 또는 보강하기 위하여 바닥판의 교체하거나 외부에서 2차로 PS강선의 보강 등이 매우 어렵고, 따라서 공사비가 상승하게 되는 문제점이 있었다.In addition, the bridge not only causes corrosion of the reinforcing bars due to cracking, but also reduces the adhesion of concrete and reinforcing bars due to air pollution, thereby seriously affecting the strength of the prestressed reinforced concrete girder, thereby reducing the life of the bridge. In order to repair or reinforce the bridge, it is very difficult to replace the bottom plate or reinforce the PS steel wire from the outside, and thus the construction cost increases.
그리고 종래의 PSC I형세그먼트 거더의 연속교에서 교대지점부의 1차 PS강선 정착을 위한 정착부 부분은 모두 지점부의 단부에 집중되어 거더를 제작할 때 1차긴장 후 교대 또는 교각에 거치 후 2차긴장 및 유지관리용 긴장 등 추가적인 목적을 위한 PS강선 정착부의 구성이 어려워 효율적인 PSC I형세그먼트 거더를 생산하지 못하는 문제점이 있었다.And in the continuous bridge of the conventional PSC I-segment girder, all the fixing parts for fixing the primary PS steel wire in the alternate point portion are concentrated at the end of the branch portion, and when the girder is manufactured, the secondary tension after the first tension is applied to the alternating or pier. PS steel wire fixing unit for the additional purpose, such as tension for maintenance and maintenance is difficult to produce an efficient PSC type I segment girder.
또한 종래의 PSC I형세그먼트 거더는 단면에 있어서 교각지점부인 부모멘트 구간과 정모멘트 구간의 강성이 크지 못하여 저형고화나 장경간화 하는데 기술적인 제약이 따르게 되는 문제점이 있었다.In addition, the conventional PSC I-segment girder has a problem in that the rigidity of the parent moment section and the constant moment section, which are the pier point portions, in the cross section is not large, resulting in technical constraints for low solidification and long span.
따라서 근래에는 정·부모멘트 구간의 단면 강성을 증대시키고, 다양한 형태의 PS강선 긴장 기술을 적용하여 경제적이고 내구성이 우수한 PSC I형세그먼트 거더의 개발 기술이 절실한 실정이다.Therefore, in recent years, there is an urgent need for the development of economical and durable PSC I-segment girder by increasing the cross-sectional rigidity of the positive and negative moment sections and applying various types of PS steel wire tension techniques.
상기와 같은 문제점을 해결하기 위하여 본 발명은 부모멘트 구간의 세그먼트 거더 단면이 박스 형상으로 구비되고, 정모멘트 구간의 세그먼트 거더의 단면은 I 또는 T형상으로 구비되어 거더의 단면 강성이 증대된 프리스트레스트 콘크리트 세그먼트 거더를 제공하는 데 그 목적이 있다.In order to solve the above problems, the present invention is provided with a cross section of the segment girder of the parent moment section, and the cross section of the segment girder of the constant moment section is provided in an I or T shape to increase the cross stiffness of the girder prestress. The purpose is to provide a concrete segment girder.
그리고 본 발명은 정모멘트 구간의 교대측 단부부분과 교대측 단부부근 복부부분과 부모멘트 구간과 정모멘트 구간이 접하는 부분에 PS강선 정착부가 구비되어 연속연결 긴장 및 유지관리용 긴장 등을 다양하게 구성할 수 있는 프리스트레스트 콘크리트 세그먼트 거더를 제공하는 데 목적이 있다.And the present invention is provided with a PS steel wire fixing unit in the contact portion of the alternating side end portion and the alternating side end portion of the constant moment section and the contact portion between the parent moment section and the constant moment section is configured in various ways such as continuous connection tension and maintenance tension The purpose is to provide a prestressed concrete segment girder that can.
또한 본 발명은 상기와 같은 추가적인 정착부를 이용하여 연결접합부의 성능을 증대시킬 수 있고, 시공과정에 따른 단계별로 세그먼트 거더의 긴장을 자유롭게 시공할 수 있어 경제적인 저형고 및 장경간화가 가능한 단면 강성이 증가된 프리스트레스트 콘크리트 세그먼트 거더를 제공하는 데 목적이 있다.In addition, the present invention can increase the performance of the connection joint by using the additional fixing unit as described above, and can be freely construction of the tension of the segment girder step by step according to the construction process economical low-profile and long-span cross-sectional rigidity The purpose is to provide increased prestressed concrete segment girder.
그리고 본 발명은 정모멘트부 세그먼트 거더와 부모멘트부 세그먼트 거더는 교대, 교각 및 가설 벤트에 거치 후 정모멘트부 세그먼트 거더의 교대측 단부와 교대 측단부 복부에서 연속연결 1차긴장 PS강선과 연속연결 2차긴장 및 유지관리용 PS강선과 정모멘트 구간과 부모멘트 구간이 접합하는 부분에서 연속연결 3차 PS강선에 의해 정.부모멘트부 세그먼트 거더가 전 구간에 일체로 연속 연결 및 접합 긴장됨으로써 경제적인 시공방법으로 장경간화를 시공할 수 있는 단면 강성이 증가된 프리스트레스트 콘크리트 세그먼트 거더를 제공하는 데 목적이 있다.In the present invention, the constant moment segment girder and the parent moment segment girder are mounted on the alternating, pier and construction vents, and then continuously connected to the primary tension PS steel wire at the alternating end and the alternating side abdomen of the constant moment segment girder. Continuous connection and joint tensioning of all parts of the fixed and secondary moment segment girder by means of continuous connection of the third PS steel wire at the point where the secondary tension and maintenance PS steel wire is connected with the positive moment section and the parent moment section. The purpose of the present invention is to provide prestressed concrete segment girder with increased cross-sectional stiffness that can be used for long span construction.
또한 본 발명은 정·부모멘트부 세그먼트 거더를 별도로 제작하여 시공 단계별로 거더에 가해지는 하중을 고려하여 1, 2, 3차 긴장을 함으로서 효율적으로 저형고 및 장경간을 구성할 수 있는 단면 강성이 증가된 프리스트레스트 콘크리트 세그먼트 거더를 제공하는 데 목적이 있다.In addition, the present invention is to make the segment height girders separately, the cross section stiffness which can efficiently form the low height and long span by the first, second, third order tension in consideration of the load applied to the girders at each construction stage The purpose is to provide increased prestressed concrete segment girder.
[과제의 해결 수단][Measures to solve the problem]
상기와 같은 목적을 달성하기 위하여 본 발명의 단면 강성이 증대된 프리스트레스트 콘크리트 세그먼트 거더는 정·부모멘트부 세그먼트 거더로 구성된 PSC I형세그먼트 거더에 있어서,In order to achieve the above object, the prestressed concrete segment girder with increased cross stiffness of the present invention is a PSC I-segment girder composed of a segment part girder, a positive moment,
상기 정모멘트부 세그먼트 거더(100)는 상·하부 플랜지(110, 120)와 복부(130)가 구분된 I형 또는 T형 단면으로 구성하되, 양측 단부의 단면과 교대지점부(140) 부근 일정 구간에 위치하는 복부(130) 단면이 박스형 단면으로 구성되고,The constant moment segment girder 100 is composed of an I-type or T-shaped cross section in which the upper and lower flanges 110 and 120 and the abdomen 130 are separated, and the cross section at both ends and the alternate point portion 140 are constant. Section of the abdomen 130 located in the section consists of a box-shaped cross section,
상기 부모멘트부 세그먼트 거더(200)는 전단면을 박스형 단면으로 구성된 것을 특징으로 한다.The parent portion segment girder 200 is characterized in that the front end surface consisting of a box-shaped cross section.
그리고 상기 정모멘트부 세그먼트 거더(100)는 양단 하부 양측에 구비된 1차긴장 정착부(150)와;And the moment moment segment girder 100 is the primary tension fixing unit 150 provided on both sides of the lower lower end;
상기 일측 1차긴장 정착부(150) 상부에 상하 일정한 간격으로 이격되도록 구비된 연속연결 1차긴장 정착부(160)와;A continuous connection primary tension fixing unit 160 provided to be spaced apart at regular intervals up and down on the one side primary tension fixing unit 150;
상기 연속연결 1차긴장 정착부(160) 내측으로 복부 측면에 구비된 연속연결 2차 긴장 및 유지관리용 정착부(170)를 포함하고,Including the continuous connection secondary tension and maintenance fixing unit 170 provided on the side of the abdomen inside the continuous connection primary tension fixing unit 160,
상기 부모멘트부 세그먼트 거더(200)는 양단 상부와 하부 양측에 구비된 1차 긴장 정착부(210)를 포함한다.The parent portion segment girder 200 includes a primary tension fixing unit 210 provided at both upper and lower ends.
또한 상기 정모멘트부 세그먼트 거더(100)는 1차진장 PS강선(300)에 의해 하부에서 직선으로 긴장되고, 부모멘트부 세그먼트 거더(200)는 1차긴장 PS강선(300)에 의해 상부와 하부에서 직선으로 긴장된다.In addition, the constant moment segment girder 100 is tensioned in a straight line from the bottom by the primary oscillation PS steel wire 300, the parent portion segment girder 200 is the upper and lower by the primary tension PS steel wire 300 In a straight line is strained.
그리고 상기 정모멘트부 세그먼트 거더(100)와 부모멘트부 세그먼트 거더(200)는 교대, 교각 및 가설 벤트에 거치 후 정모멘트부 세그먼트 거더(100)의 교대측 단부와 교대 측단부 복부(130)에서 연속연결 1차긴장 PS강선(400)과 연속연결 2차긴장 및 유지관리용 PS강선(500)에 의해 정·부모멘트부 세그먼트 거더(100, 200)가 전 구간에 일체로 연속 연결 및 접합 긴장된다.In addition, the constant moment segment girder 100 and the parent moment segment girder 200 are mounted on an alternating, pier, and construction vent, and then the alternating side end and the alternating side end portion 130 of the constant moment segment girder 100. Continuous and primary moment segment girder (100, 200) is integrally connected and connected to all sections by the continuous connection primary tension PS steel wire (400) and continuous connection secondary tension and maintenance PS steel wire (500). do.
한편 상기 정·부모멘트부 세그먼트 거더(100, 200)는 정모멘트부 세그먼트 거더(100)의 외측부 박스형 단면에 구비된 연속연결 3차긴장 정착부(180)에 연속연결 3차긴장 PS강선(600)에 의해 부모멘트부 세그먼트 거더(200)의 부모멘트 구간(800) 단위로 연속 연결 및 접합된다.Meanwhile, the positive and negative moment segment segments girder (100 and 200) are connected to the continuous third tertiary tension fixing unit (180) provided at the outer box-shaped cross section of the positive moment segment girder (100). ) Is continuously connected and joined in units of the parent section section 800 of the parent section segment girder 200.
[발명의 효과][Effects of the Invention]
상기와 같이 구성된 본 발명의 프리스트레스트 콘크리트 세그먼트 거더는 부모멘트 구간의 세그먼트 거더 단면이 박스 형상으로 구비되고, 정모멘트 구간의 세그먼트 거더의 단면은 I 또는 T형상으로 구비되어 거더의 단면 강성이 증대되는 효과가 있다.In the prestressed concrete segment girder of the present invention configured as described above, the cross section of the segment girder of the parent moment section is provided in a box shape, and the cross section of the segment girder of the constant moment section is provided in an I or T shape to increase the cross-sectional rigidity of the girder. It works.
그리고 본 발명은 부모멘트 구간과 정모멘트 구간이 접하는 부분에 PS강선 정착부가 구비되어 연속연결 정착부를 추가적으로 구성할 수 있는 효과가 있다.In addition, the present invention has an effect that the PS steel wire fixing unit is provided in a portion where the parent moment section and the constant moment section are in contact with each other to further configure the continuous connection fixing unit.
또한 본 발명은 상기와 같은 추가적인 정착부를 이용하여 연결접합부의 성능을 증대시킬 수 있고, 시공과정에 따른 단계별로 세그먼트 거더의 긴장을 자유롭게 시공할 수 있어 경제적인 저형고 및 장경간화가 가능한 효과가 있다.In addition, the present invention can increase the performance of the connection joint using the additional fixing unit as described above, can be freely construction of the tension of the segment girder step by step according to the construction process has the effect of economical low height and long span .
그리고 본 발명은 정모멘트부 세그먼트 거더와 부모멘트부 세그먼트 거더는 교대, 교각 및 가설 벤트에 거치 후 정모멘트부 세그먼트 거더의 교대측 단부와 교대 측단부 복부에서 연속연결 1차긴장 PS강선과 연속연결 2차긴장 및 유지관리용 PS강선과 정모멘트 구간과 부모멘트 구간이 접하는 부분에 연속연결 3차 PS강선에 의해 정.부모멘트부 세그먼트 거더가 전 구간에 일체로 연속 연결 및 접합 긴장됨으로써 경제적인 시공방법으로 장경간화를 시공할 수 있는 효과가 있다.In the present invention, the constant moment segment girder and the parent moment segment girder are mounted on the alternating, pier and construction vents, and then continuously connected to the primary tension PS steel wire at the alternating end and the alternating side abdomen of the constant moment segment girder. Continuous connection to the part where the secondary tension and maintenance PS steel wire is in contact with the positive moment section and the parent moment section. The construction method has the effect that can be installed in long span.
또한 본 발명은 정·부모멘트부 세그먼트 거더를 별도로 제작하여 시공 단계별로 거더에 가해지는 하중을 고려하여 1, 2, 3차 긴장을 함으로서 효율적으로 저형고 및 장경간을 구성할 수 있는 효과가 있다.In addition, the present invention has the effect of efficiently forming the low height and long span by making the first, second, third order tension in consideration of the load applied to the girder in the construction stage by separately manufacturing the girder part and the moment moment segment girder .
상기와 같은 목적을 달성하기 위하여 본 발명의 단면 강성이 증대된 프리스트레스트 콘크리트 세그먼트 거더는 정·부모멘트부 세그먼트 거더로 구성된 PSC I형세그먼트 거더에 있어서,In order to achieve the above object, the prestressed concrete segment girder with increased cross stiffness of the present invention is a PSC I-segment girder composed of a segment part girder, a positive moment,
*상기 정모멘트부 세그먼트 거더(100)는 상·하부 플랜지(110, 120)와 복부(130)가 구분된 I형 또는 T형 단면으로 구성하되, 양측 단부의 단면과 교대지점부(140) 부근 일정 구간에 위치하는 복부(130) 단면이 박스형 단면으로 구성되고,* The forward moment segment girder 100 is composed of an I-type or T-shaped cross section of the upper and lower flanges (110, 120) and the abdomen 130, the cross-sections of both ends and the alternating point portion (140) The abdomen 130 cross section located in a predetermined section is composed of a box-shaped cross section,
상기 부모멘트부 세그먼트 거더(200)는 전단면을 박스형 단면으로 구성된 것을 특징으로 한다.The parent portion segment girder 200 is characterized in that the front end surface consisting of a box-shaped cross section.
그리고 상기 정모멘트부 세그먼트 거더(100)는 양단 하부 양측에 구비된 1차긴장 정착부(150)와;And the moment moment segment girder 100 is the primary tension fixing unit 150 provided on both sides of the lower lower end;
상기 일측 1차긴장 정착부(150) 상부에 상하 일정한 간격으로 이격되도록 구비된 연속연결 1차긴장 정착부(160)와;A continuous connection primary tension fixing unit 160 provided to be spaced apart at regular intervals up and down on the one side primary tension fixing unit 150;
상기 연속연결 1차긴장 정착부(160) 내측으로 복부 측면에 구비된 연속연결 2차 긴장 및 유지관리용 정착부(170)를 포함하고,Including the continuous connection secondary tension and maintenance fixing unit 170 provided on the side of the abdomen inside the continuous connection primary tension fixing unit 160,
상기 부모멘트부 세그먼트 거더(200)는 양단 상부와 하부 양측에 구비된 1차 긴장 정착부(210)를 포함한다.The parent portion segment girder 200 includes a primary tension fixing unit 210 provided at both upper and lower ends.
또한 상기 정모멘트부 세그먼트 거더(100)는 1차진장 PS강선(300)에 의해 하부에서 직선으로 긴장되고, 부모멘트부 세그먼트 거더(200)는 1차긴장 PS강선(300)에 의해 상부와 하부에서 직선으로 긴장된다.In addition, the constant moment segment girder 100 is tensioned in a straight line from the bottom by the primary oscillation PS steel wire 300, the parent portion segment girder 200 is the upper and lower by the primary tension PS steel wire 300 In a straight line is strained.
그리고 상기 정모멘트부 세그먼트 거더(100)와 부모멘트부 세그먼트 거더(200)는 교대, 교각 및 가설 벤트에 거치 후 정모멘트부 세그먼트 거더(100)의 교대측 단부와 교대 측단부 복부(130)에서 연속연결 1차긴장 PS강선(400)과 연속연결 2차긴장 및 유지관리용 PS강선(500)에 의해 정·부모멘트부 세그먼트 거더(100, 200)가 전 구간에 일체로 연속 연결 및 접합 긴장된다.In addition, the constant moment segment girder 100 and the parent moment segment girder 200 are mounted on an alternating, pier, and construction vent, and then the alternating side end and the alternating side end portion 130 of the constant moment segment girder 100. Continuous and primary moment segment girder (100, 200) is integrally connected and connected to all sections by the continuous connection primary tension PS steel wire (400) and continuous connection secondary tension and maintenance PS steel wire (500). do.
한편 상기 정·부모멘트부 세그먼트 거더(100, 200)는 정모멘트부 세그먼트 거더(100)의 외측부 박스형 단면에 구비된 연속연결 3차긴장 정착부(180)에 연속연결 3차긴장 PS강선(600)에 의해 부모멘트부 세그먼트 거더(200)의 부모멘트 구간(800) 단위로 연속 연결 및 접합된다.Meanwhile, the positive and negative moment segment segments girder (100 and 200) are connected to the continuous third tertiary tension fixing unit (180) provided at the outer box-shaped cross section of the positive moment segment girder (100). ) Is continuously connected and joined in units of the parent section section 800 of the parent section segment girder 200.
상기와 같이 구성된 본 발명의 프리스트레스트 콘크리트 세그먼트 거더는 부모멘트 구간의 세그먼트 거더 단면이 박스 형상으로 구비되고, 정모멘트 구간의 세그먼트 거더의 단면은 I 또는 T형상으로 구비되어 거더의 단면 강성이 증대되는 효과가 있다.The prestressed concrete segment girder of the present invention configured as described above is provided with a cross section of the segment girder of the parent moment section, the cross section of the segment girder of the constant moment section is provided in the I or T shape to increase the cross-sectional rigidity of the girder It works.
그리고 본 발명은 부모멘트 구간과 정모멘트 구간이 접하는 부분에 PS강선 정착부가 구비되어 연속연결 정착부를 추가적으로 구성할 수 있는 효과가 있다.In addition, the present invention has an effect that the PS steel wire fixing unit is provided in a portion where the parent moment section and the constant moment section are in contact with each other to further configure the continuous connection fixing unit.
또한 본 발명은 상기와 같은 추가적인 정착부를 이용하여 연결접합부의 성능을 증대시킬 수 있고, 시공과정에 따른 단계별로 세그먼트 거더의 긴장을 자유롭게 시공할 수 있어 경제적인 저형고 및 장경간화가 가능한 효과가 있다.In addition, the present invention can increase the performance of the connection joint using the additional fixing unit as described above, can be freely construction of the tension of the segment girder step by step according to the construction process has the effect of economical low height and long span .
그리고 본 발명은 정모멘트부 세그먼트 거더와 부모멘트부 세그먼트 거더는 교대, 교각 및 가설 벤트에 거치 후 정모멘트부 세그먼트 거더의 교대측 단부와 교대 측단부 복부에서 연속연결 1차긴장 PS강선과 연속연결 2차긴장 및 유지관리용 PS강선과 정모멘트 구간과 부모멘트 구간이 접하는 부분에 연속연결 3차 PS강선에 의해 정.부모멘트부 세그먼트 거더가 전 구간에 일체로 연속 연결 및 접합 긴장됨으로써 경제적인 시공방법으로 장경간화를 시공할 수 있는 효과가 있다.In the present invention, the constant moment segment girder and the parent moment segment girder are mounted on the alternating, pier and construction vents, and then continuously connected to the primary tension PS steel wire at the alternating end and the alternating side abdomen of the constant moment segment girder. Continuous connection to the part where the secondary tension and maintenance PS steel wire is in contact with the positive moment section and the parent moment section. The construction method has the effect that can be installed in long span.
또한 본 발명은 정·부모멘트부 세그먼트 거더를 별도로 제작하여 시공 단계별로 거더에 가해지는 하중을 고려하여 1, 2, 3차 긴장을 함으로서 효율적으로 저형고 및 장경간을 구성할 수 있는 효과가 있다.In addition, the present invention has the effect of efficiently forming the low height and long span by making the first, second, third order tension in consideration of the load applied to the girder in the construction stage by separately manufacturing the girder part and the moment moment segment girder .
도 1은 본 발명에 따른 정·부모멘트부 PSC I형세그먼트 거더를 나타낸 예시도.1 is an exemplary view showing a PSC I-type segment girder with a positive moment moment in accordance with the present invention.
도 2는 본 발명에 따른 정·부모멘트부 PSC I형세그먼트 거더의 정면을 나타낸 예시도.Figure 2 is an exemplary view showing the front of the positive and negative moment portion PSC I-segment girder according to the present invention.
도 3은 본 발명에 따른 정모멘트부 PSC I형세그먼트 거더를 나타낸 예시도Figure 3 is an exemplary view showing a constant moment portion PSC I-segment girder in accordance with the present invention
도 4는 본 발명에 따른 정모멘트부 PSC I형세그먼트 거더의 정면을 나타낸 예시도.Figure 4 is an exemplary view showing the front of the constant moment portion PSC I-segment girder in accordance with the present invention.
도 5는 도 4의 A-A선에서 F-F선 단면을 나타낸 예시도.5 is an exemplary view showing a cross section taken along the line F-F in the line A-A of FIG.
도 6은 본 발명에 따른 정모멘트부 PSC I형세그먼트 거더에 연속연결 1차긴장 PS강선과 연속연결 2차긴장 및 유지관리용 PS강선이 설치된 상태를 나타낸 예시도.Figure 6 is an exemplary view showing a state in which the continuous connection primary tension PS steel and the continuous connection secondary tension and maintenance PS steel wire installed in the constant moment portion PSC I-segment girder according to the present invention.
도 7은 본 발명에 따른 부모멘트부 PSC I형세그먼트 거더를 나타낸 예시도.Figure 7 is an exemplary view showing a parent portion PSC type I segment girder according to the present invention.
도 8은 본 발명에 따른 부모멘트부 PSC I형세그먼트 거더의 정면을 나타낸 예시도.Figure 8 is an exemplary view showing the front of the parent cement portion PSC I-segment girder according to the present invention.
도 9는 도 8의 A'-A'선에서 C'-C'선 단면을 나타낸 예시도.9 is an exemplary view showing a cross-section C'-C 'in the line A'-A' of FIG.
도 10은 본 발명에 따른 부모멘트부 PSC I형세그먼트 거더에 연속연결 1차긴장 PS강선과 연속연결 2차긴장 및 유지관리용 PS강선이 설치된 상태를 나타낸 예시도.10 is an exemplary view showing a state in which the continuous connection primary tension PS steel and the continuous connection secondary tension and maintenance PS steel wire installed in the parent portion PSC I-type segment girder according to the present invention.
도 11은 본 발명에 따른 정·부모멘트부 PSC I형세그먼트 거더의 연속연결 1차긴장 PS강선과 연속연결 2차긴장 및 유지관리용 PS강선이 연속연결 및 접합된 상태를 나타낸 예시도.11 is an exemplary view showing a state in which the continuous connection primary tension PS steel and the continuous connection secondary tension and maintenance PS steel of the PSC I-type segment girder of the positive and secondary moments according to the present invention is connected and bonded continuously.
도 12는 본 발명에 따른 정·부모멘트부 PSC I형세그먼트 거더의 다른 실시예를 나타낸 예시도.12 is an exemplary view showing another embodiment of the PSC I-type segment girder with the positive and negative moment portion according to the present invention.
도 13은 본 발명에 따른 정·부모멘트부 PSC I형세그먼트 거더의 다른 실시예에서 연속연결 3차긴장 정착부와 연속연결 3차긴장 PS강선이 설치된 상태를 나타낸 예시도.13 is an exemplary view showing a state in which the continuous connection third tension fixing unit and the continuous connection third tension PS steel wire is installed in another embodiment of the positive and negative moment portion PSC I-segment girder according to the present invention.
도 14는 본 발명에 따른 정·부모멘트부 PSC의 다른 예로써 T형세그먼트 거더를 나타낸 예시도.14 is an exemplary view showing a T-shaped segment girder as another example of the positive and negative moment portion PSC according to the present invention.
도 15는 본 발명에 따른 정·부모멘트부 PSC의 다른 예로써 T형세그먼트 거더의 정면을 나타낸 예시도.15 is an exemplary view showing a front surface of a T-type segment girder as another example of the positive and negative moment portion PSC according to the present invention.
도 16은 본 발명에 따른 정모멘트부 PSC의 다른 예로써 T형세그먼트 거더를 나타낸 예시도16 is an exemplary view showing a T-shaped segment girder as another example of the constant moment portion PSC according to the present invention.
도 17은 본 발명에 따른 정모멘트부 PSC의 다른 예로써 T형세그먼트 거더의 정면을 나타낸 예시도.Figure 17 is an illustration showing the front of the T-shaped segment girder as another example of the constant moment portion PSC according to the present invention.
도 18은 도 17의 A-A선에서 F-F선 단면을 나타낸 예시도.18 is an exemplary view showing a cross section taken along the line F-F in the line A-A of FIG.
도 19는 본 발명의 다른 예인 정모멘트부 PSC T형세그먼트 거더에 연속연결 1차긴장 PS강선과 연속연결 2차긴장 및 유지관리용 PS강선이 설치된 상태를 나타낸 예시도.19 is an exemplary view showing a state in which a continuous connection primary tension PS steel and a continuous connection secondary tension and maintenance PS steel wires are installed in the constant moment PSC T-segment girder which is another example of the present invention.
본 발명의 바람직한 실시예를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.
본 발명의 프리스트레스트 콘크리트 세그먼트 거더는 도 1과 도 2에 도시된 바와 같이 2경간 또는 도면에 도시하지는 않았지만 3경간 또는 4경간 등 다양한 형태의 교량으로 설치된다.Prestressed concrete segment girder of the present invention is installed in a bridge of various forms, such as three or four spans, although not shown in two or as shown in Figure 1 and 2.
이러한 프리스트레스트 콘크리트 세그먼트 거더에서 먼저 정모멘트부 세그먼트 거더(100)는 도 3과 도 4에 도시된 바와 같이 상·하부 플랜지(110, 120)와 복부(130)가 구분된 I형 단면으로 구성하되, 양측 단부의 단면과 교대지점부(140) 부근 일정 구간에 위치하는 복부(130)는 단면이 박스형 단면으로 구성된다.In the prestressed concrete segment girder, the first moment segment segment girder 100 is composed of an I-shaped cross section in which upper and lower flanges 110 and 120 and the abdomen 130 are divided as shown in FIGS. 3 and 4. , The abdomen 130 located in a predetermined section near the cross section and the alternate point portion 140 of both ends is composed of a box-shaped cross section.
그리고 상기 부모멘트부 세그먼트 거더(200)는 도 7과 도 8에 도시된 바와 같이 상부 플랜지(210)가 상부가 양측으로 약간 돌출된 형상의 박스형 단면으로 구성된다.In addition, as shown in FIGS. 7 and 8, the parent cement segment girder 200 includes a box-shaped cross section in which the upper flange 210 protrudes slightly to both sides.
이때 상기 정모멘트부 세그먼트 거더(100)는 양단 하부 양측에 1차긴장 정착부(150)가 구비되고, 상기 일측에 구비된 1차긴장 정착부(150)의 상부에 상하 일정한 간격으로 이격되도록 연속연결 1차긴장 정착부(160)가 구비된다.At this time, the constant moment segment girder 100 is provided with a primary tension fixing unit 150 on both sides of the lower lower end, continuous to be spaced apart at regular intervals up and down on the upper portion of the primary tension fixing unit 150 provided on one side. Connection primary tension fixing unit 160 is provided.
그리고 상기 연속연결 1차긴장 정착부(160) 내측으로 박스형 단면의 복부(130) 측면에는 연속연결 2차 긴장 및 유지관리용 정착부(170)가 구비된다.A continuous connection secondary tension and maintenance fixing unit 170 is provided at the side of the abdomen 130 having a box-shaped cross section inside the continuous connecting primary tension fixing unit 160.
상기와 같이 I형 거더의 교대지점부(140) 부분 및 교대지점부(140)에서 일정한 거리에 있는 부분과 교각지점부 부분의 구간은 단면이 박스 형상의 단면으로 구성되며, 상기 구간 이외의 구간은 기존의 거더 단면과 같은 I형 단면으로 구성된다.As described above, the section of the alternating point portion 140 and the portion of the alternating point portion 140 of the I-type girder and the section of the pier point portion have a box-shaped cross section, and other sections than the above section. Is composed of I-shaped section like the existing girder section
교대지점부에서 내측으로 일정부분에 구성된 박스 형상의 단면측면에는 연속연결 2차긴장 및 유지관리용 정착부(170)가 구비된다.Composed of a certain part inward from the shift point Box-shaped cross-section side is provided with a continuous connection secondary tension and maintenance fixing unit 170.
상기와 같은 정모멘트부 세그먼트 거더(100)는 도 4 내지 도 6에 도시된 바와 같이 A-A선 단면에는 박스 형상의 단면으로 하부에 좌우 일정한 간격으로 이격되도록 다수의 1차 긴장 정착부(150)가 구비되며, 1차긴장 정착부(500)의 상부에는 상하 일정한 간격으로 이격되도록 연속연결 1차긴장 정착부(160)가 구비된다.As shown in FIG. 4 to FIG. 6, the plurality of primary tension fixing units 150 may be spaced apart at regular intervals on the lower side of the regular moment segment girder 100 as shown in FIGS. 4 to 6. It is provided, and the upper portion of the first tension fixing unit 500 is provided with a continuous connection primary tension fixing unit 160 to be spaced apart at regular intervals.
그리고 B-B선 단면의 I형상 단면 하부에는 1차 긴장 정착부(150)에 일측단이 결합되는 연속연결 1차 PS강선(300)이 구비되고, I형상 단면의 중앙에는 연속연결 1차긴장 정착부(160)에 일측단이 결합되는 연속연결 1차긴장 PS강선(400)이 구비된다. In addition, a continuous connection primary PS steel wire 300 having one end coupled to the primary tension fixing unit 150 is provided at the lower portion of the I-shaped cross section of the BB line cross-section, and the continuous connecting primary tension fixing unit is formed at the center of the I-shaped cross section. One end is coupled to the 160 is connected to the first tension PS steel wire 400 is continuous.
또한 C-C선 I형상의 단면 하부에는 좌우로 이격되는 1차긴장 PS강선(300)이 구비되고, 상기 1차긴장 PS강선(300)의 상부에는 상하로 이격되는 연속연결 1차긴장 PS강선(400)이 구비되며, I형상의 단면과 박스형 형상의 단면이 접하는 부분의 복부 측단에는 양측으로 연속연결 2차긴장 및 유지관리용 정착부(170)가 구비된다.In addition, a primary tension PS steel wire 300 spaced to the left and right is provided at a lower portion of the cross section of the CC line I shape, and a continuous connection primary tension PS steel wire 400 spaced vertically to the upper portion of the primary tension PS steel wire 300. ) Is provided, the abdominal side end of the portion where the I-shaped cross section and the box-shaped cross section is provided with a secondary connection and maintenance fixing unit 170 for continuous connection to both sides.
그리고 D-D선 I형상의 단면 하부에는 좌우로 이격되는 1차긴장 PS강선(300)이 구비되고, 상기 1차긴장 PS강선(300)의 상부에는 상하로 이격되는 연속연결 1차긴장 PS강선(400)이 구비되며, 상기 연속연결 1차긴장 PS강선(400)의 상부에는 상하로 이격되는 연속연결 2차긴장 및 유지관리용 PS강선(500)이 구비된다.In addition, a primary tension PS steel wire 300 spaced to the left and right is provided at a lower portion of the cross section of the DD line I shape, and a continuous connection primary tension PS steel wire 400 spaced up and down on the upper portion of the primary tension PS steel wire 300. ) Is provided, and the upper portion of the continuous connection primary tension PS steel wire 400 is provided with a continuous connection secondary tension and maintenance PS steel wire 500 spaced up and down.
또한 E-E선 I형상의 단면 하부에는 한 쌍의 1차긴장 PS강선(300)이 구비되고, 상기 한 쌍의 1차긴장 PS강선(300) 상부에는 상하로 이격되도록 2개의 연속연결 1차긴장 PS강선(400)이 구비되며, 상기 연속연결 1차긴장 PS강선(400) 상부에는 한 쌍의 연속연결 2차긴장 및 유지관리용 PS강선(50)이 각각 구비된다.In addition, a pair of primary tension PS steel wires 300 are provided at a lower portion of the cross section of the EE line I-shape, and two consecutive connection primary tension PSs are spaced up and down on the pair of primary tension PS steel wires 300. A steel wire 400 is provided, and a pair of continuous connection secondary tension and maintenance PS steel wires 50 are respectively provided on the continuous connection primary tension PS steel wire 400.
그리고 F-F선 박스 형상의 단면 하부에는 좌우 일정한 간격으로 이격되도록 1차긴장 정착부(150)가 구비되고, 상기 1차긴장 정착부(150) 상부에는 상하로 이격되는 연속연결 1차긴장 PS강선(400)이 구비되며, 연속연결 1차긴장 PS강선(400) 상부에는 상하로 이격된 연속연결 2차긴장 및 유지관리용 PS강선(500)이 구비되며, 상기 연속연결 2차긴장 및 유지관리용 PS강선(500)의 상부 양측에는 또 다른 연속연결 2차긴장 및 유지관리용 PS강선(500)이 구비된다.And the lower end of the cross-sectional shape of the FF line box is provided with a primary tension fixing unit 150 to be spaced apart at regular intervals, the upper tension fixing unit 150 is connected to the upper and lower continuous connecting primary tension PS steel wire ( 400 is provided, the continuous connection primary tension PS steel wire 400, the upper and lower continuous connection secondary tension and maintenance PS steel wire 500 is provided, the continuous connection secondary tension and maintenance for The upper both sides of the PS steel wire 500 is provided with another continuous connection secondary tension and maintenance PS steel wire 500.
한편 상부 양측으로 돌출되는 상부 플랜지(210)가 구비된 부모멘트부 세그먼트 거더(200)는 도 7과 도8에 도시된 바와 같이 단면이 박스 형상으로 구비되고, 양단 상부와 하부 양측에 각각 1차 긴장 정착부(220)가 각각 구비된다.Meanwhile, as shown in FIGS. 7 and 8, the parent cement segment girder 200 having the upper flange 210 protruding to both sides of the upper part has a box-shaped cross section, and is formed on both sides of the upper and lower ends of the upper part. Tension fixing parts 220 are provided respectively.
그리고 상기와 같은 부모멘트부 세그먼트 거더(200)는 도 9에 도시된 바와 같이 단면이 박스 형상인 A-A선 단면에는 좌우 일정한 간격으로 이격되도록 한 쌍의 1차긴장 정착부(220)가 구비되고, 상기 1차 긴장 정착부(220) 상부에는 폭 방향으로 상하 일정한 간격 이격되도록 한 쌍의 연속연결 1차긴장 PS강선(400)이 구비되며, 상기 연속연결 1차긴장 PS강선(400) 상부에는 상하로 이격되도록 한 쌍의 연속연결 2차긴장 및 유지관리용 PS강선(500)이 구비되고, 상기 연속연결 2차긴장 및 유지관리용 PS강선(500) 상부에는 좌우로 이격되도록 제 2의 연속연결 2차긴장 및 유지관리용 PS강선(500)이 구비된다.And as shown in Figure 9 the parent segment segment girder 200 is provided with a pair of primary tension fixing unit 220 so as to be spaced apart at regular intervals on the left and right AA line cross-section as shown in Figure 9, A pair of continuous connection primary tension PS steel wires 400 are provided on the first tension fixing unit 220 so as to be spaced apart at regular intervals in the width direction, and the upper and lower upper portions of the continuous connection primary tension PS steel wires 400. A pair of continuous connection secondary tension and maintenance PS steel wire 500 is provided so as to be spaced apart, and the second continuous connection so as to be spaced apart from the left and right on the continuous connection secondary tension and maintenance PS steel wire 500. Secondary tension and maintenance PS steel wire 500 is provided.
그리고 B-B선 T형상의 단면 하부에는 1차 긴장 정착부(400)에 일측단이 결합되는 한 쌍의 1차 긴장 PS강선(300)이 구비되고, 상기 1차 긴장 PS강선(300)의 상부에는 상하로 이격된 한 쌍의 연속연결 1차긴장 PS강선(400)이 구비되며, 연속연결 1차긴장 PS강선(400)의 상부에는 상하로 이격되도록 연속연결 2차긴장 및 유지관리용 PS강선(500)이 구비되고, 상기 연속연결 2차긴장 및 유지관리용 PS강선(500)의 양측으로 좌우로 각각 이격된 제 2의 연속연결 2차긴장 및 유지관리용 PS강선(500)이 구비된다.In addition, a pair of primary tension PS steel wires 300, one side of which is coupled to the primary tension fixing part 400, is provided at a lower portion of the cross-sectional shape of the BB line T, and an upper portion of the primary tension PS steel wires 300 is provided on the upper portion of the primary tension PS steel wire 300. A pair of continuous connection primary tension PS steel wire 400 is spaced up and down is provided, the upper portion of the continuous connection primary tension PS steel wire 400 is connected to the vertical connection secondary tension and maintenance PS steel wire ( 500 is provided, and the second continuous connection secondary tension and maintenance PS steel wires 500 are spaced from side to side on both sides of the continuous connection secondary tension and maintenance PS steel wire 500, respectively.
또한 C-C선 박스 형상의 단부에는 A-A선과 동일하게 한 쌍의 1차 긴장 정착부(220)와 한 쌍의 연속연결 1차긴장 PS강선(400)이 구비되고, 연속연결 1차긴장 PS강선(400)의 상부에는 상하로 이격되도록 연속연결 2차긴장 및 유지관리용 PS강선(500)이 구비되고, 상기 연속연결 2차긴장 및 유지관리용 PS강선(500)의 양측으로 좌우로 각각 이격된 제 2의 연속연결 2차긴장 및 유지관리용 PS강선(500)이 구비된다In addition, the end of the CC line box shape is provided with a pair of primary tension fixing unit 220 and a pair of continuous connection primary tension PS steel wire 400, similar to AA line, continuous connection primary tension PS steel wire 400 The upper portion of the) is provided with a continuous connection secondary tension and maintenance PS steel wire 500 to be spaced up and down, spaced from the left and right to each side of the continuous connection secondary tension and maintenance PS steel wire 500, respectively. 2 is connected to the secondary tension and maintenance PS steel wire 500 is provided
이와 같은 본 발명의 PSC I형세그먼트 거더는 도 11에 도시된 바와 같이 정모멘트부 세그먼트 거더(100)는 1차긴장 PS강선(300)에 의해 하부에서 직선으로 긴장되고, 부모멘트부 세그먼트 거더(200)는 1차 PS강선(300)에 의해 상부와 하부에서 직선으로 긴장된다.Such a PSC I-segment girder of the present invention, as shown in FIG. 11, the constant moment segment segment girder 100 is tensioned in a straight line from the bottom by the primary tension PS steel wire 300, and the parent segment segment girder ( 200 is tensioned in a straight line at the top and bottom by the primary PS steel wire (300).
즉 정모멘트부 세그먼트 거더(100)의 자중은 하부에 구비된 1차긴장 PS강선(300)이 담당하게 되고, 부모멘트부 세그먼트 거더(200)의 자중은 상부와 하부에 각각 구비된 1차 PS강선(300)이 담당하게 된다.That is, the self-weight of the constant moment segment girder 100 is in charge of the primary tension PS steel wire 300 provided at the bottom, the self-weight of the parent portion segment girder 200 is the primary PS provided at the top and bottom, respectively The steel wire 300 will be in charge.
그리고 상기와 같이 1차로 긴장된 정·부모멘트부 세그먼트 거더(100, 200)를 교대, 교각 및 가설 벤트에 거치한 후 정모멘트부 세그먼트 거더(100)의 양단부에 구비된 연속연결 1차긴장 정착부(160) 연결된 연속연결 1차긴장 PS강선(400)에 의해 정·부모멘트부 세그먼트 거더(100, 200)의 전 구간을 연속연결 및 접합한다.And as shown above, after mounting the primary and secondary moment segment segment girders (100, 200) to the alternating, pier and temporary vent as described above, the continuous connection primary tension fixing unit provided at both ends of the positive moment segment segment girder (100) (160) Continuously connecting and joining all sections of the positive and negative moment segment segment girders (100, 200) by the connected continuous connection primary tension PS steel wire (400).
상기와 같은 연속연결 1차긴장 PS강선(400)의 긴장에 의해 정·부모멘트부 세그먼트 거더(100, 200)를 연속연결 및 접합한 후에 슬래브를 타설하고, 2차 고정하중을 시공 완료한 후 정모멘트부 세그먼트 거더(100)의 교대지점부(140)에 일정 구간 박스형 단면에 구비된 연속연결 2차긴장 및 유지관리용 정착부(170)에 일측이 연결된 연속연결 2차긴장 PS강선(500)을 긴장하여 마무리하게 된다.After the continuous connection and joining of the primary and secondary moment segment girder (100, 200) by the tension of the continuous connection primary tension PS steel wire 400 as described above, after placing the slab, after completing the construction of the secondary fixed load Continuous connection secondary tension provided on the alternating point portion 140 of the constant moment segment girder 100 in a box-shaped cross section and continuous connection secondary tension PS steel wire 500 having one side connected to the maintenance fixing unit 170 ) Is finished with tension.
한편 상기 정·부모멘트부 세그먼트 거더(100, 200)는 도 12와 도 13에 도시된 바와 같이 정모멘트부 세그먼트 거더(100)의 외측부 박스형 단면에 구비된 연속연결 3차긴장 정착부(180)에 연속연결 3차긴장 PS강선(600)에 의해 부모멘트부 세그먼트 거더(200)의 부모멘트 구간(800) 단위로 연속 연결 및 접합되어 긴장되도록 실시할 수 있다.Meanwhile, the positive and negative moment segment segments girder 100 and 200 are continuously connected to the third tension fixing unit 180 provided in the outer box-shaped cross section of the positive moment segment segment girder 100 as shown in FIGS. 12 and 13. The continuous connection to the third tension PS steel wire 600 can be carried out by the continuous connection and bonding in the unit of the parent section section 800 of the parent section segment girder 200 to tension.
이와 같은 PSC I형세그먼트 거더의 시공방법은 정·부모멘트부 세그먼트 거더(100, 200)를 제작하여 시공 단계별로 재하(surcharge, 載荷)되는 하중을 고려하여 긴장을 함으로써 가장 효율적이고 저형고, 장경간의 거더교를 건설할 수 있는 것이다.The construction method of the PSC I-segment girder is the most efficient, low profile, long diameter by making the static girder segment segments girder (100, 200) and taking the tension in consideration of the loads to be charged at each construction stage. Girder bridge can be built.
[부호의 설명][Description of the code]
100 : 정모멘트부 세그먼트 거더100: constant moment segment girder
110 : 상부 플랜지 120 : 하부 플랜지110: upper flange 120: lower flange
130 : 복부 140 : 교대지점부130: abdomen 140: shift branch
150 : 1차긴장 정착부 160 : 연속연결 1차긴장 정착부150: primary tension fixing unit 160: continuous connection primary tension fixing unit
170 : 연속연결 2차긴장 및 유지관리용 정착부170: Secondary tensioning and maintenance fixing unit for continuous connection
180 : 연속연결 3차긴장 정착부180: third connection tension fixing unit
200 : 부모멘트 세그먼트 거더200: parent segment segment girder
210 : 상부 플랜지 220 : 1차 긴장 정착부210: upper flange 220: primary tension fixing unit
300 : 1차 PS강선300: 1st PS steel wire
400 : 연속연결 1차긴장 PS강선400: Continuously connected first tension PS steel wire
500 : 연속연결 2차긴장 및 유지관리용 PS강선500: PS steel wire for secondary connection and maintenance
600 : 연속연결 3차긴장 PS강선600: Continuously Connected 3rd Tension PS Steel Wire
700 : 정모멘트 구간700: constant moment section
800 : 부모멘트 구간800: parent section

Claims (4)

  1. 정·부모멘트부 세그먼트 거더로 구성된 PSC 세그먼트 거더에 있어서,In the PSC segment girder composed of the positive and minor moment segment girder,
    상기 정모멘트부 세그먼트 거더는 I형 단면으로 구성하되, 양측 단부의 단면과 교대지점부 부근 일정 구간에 위치하는 단면은 박스형 단면으로 구성되고,The constant moment segment girder is composed of an I-shaped cross section, the cross section located at a predetermined section near the alternating point and the cross section of both ends is composed of a box-shaped cross section,
    상기 부모멘트부 세그먼트 거더는 박스형 단면으로 구성된 단면 강성이 증가된 프리스트레스트 콘크리트 세그먼트 거더.The parent portion segment girder is prestressed concrete segment girder with increased cross-sectional rigidity consisting of a box-shaped cross section.
  2. 정.부멘트부 세그먼트 거더로 구성된 PSC 세그먼트 거더에 있어서,In the PSC segment girder composed of the segment part girder
    상기 정모멘트부 세그먼트 거더는 T형 단면으로 구성하되, 교대지점부 부근 일정구간 내측에 위치하는 단면과 부모멘트부와 접합되는 부분에 위치하는 단면은 박스형 단면으로 구성되고The constant moment segment girder is composed of a T-shaped cross section, the cross section located inside the predetermined section near the alternating point portion and the cross section located at the portion joined to the parent moment portion is composed of a box-shaped cross section
    상기 부모멘트부 세그먼트 거더는 박스형 단면으로 구성된 단면 강성이 증가된 프리스트레스트 콘크리트 세그먼트 거더.The parent portion segment girder is prestressed concrete segment girder with increased cross-sectional rigidity consisting of a box-shaped cross section.
  3. 제 1 항 및 2 항에 있어서, 상기 정모멘트부 세그먼트 거더는 양단 하부 양측에 구비된 1차긴장 정착부와;According to claim 1 and 2, wherein the constant moment segment girder and the primary tension fixing unit provided on both sides of the lower end;
    상기 일측 1차긴장 정착부) 상부에 상하 일정한 간격으로 이격되도록 구비된 연속연결 1차긴장 정착부와;A continuous connection primary tension fixing unit provided to be spaced at regular intervals above and below the one side primary tension fixing unit;
    교대지점부 부근 일정구간 내측에 위치하는 박스형 단면 복부에 구비된 연속연결 2차 긴장 및 유지관리용 정착부와 정모멘트부 세그먼트가 부모멘트부 세그먼트와 접합하는 부분에 있는 연속연결 3차 긴장 정착부를 포함하는 단면 강성이 증가된 프리스트레스트 콘크리트 세그먼트 거더.Continuously connected secondary tension in the box-shaped cross-section abdomen located in a certain section near the alternating point and the continuously connected third tension anchorage in the part where the maintenance anchor and the constant moment segment join the parent segment segment. Prestressed concrete segment girder with increased cross-sectional rigidity.
  4. 제 3 항에 있어서, The method of claim 3, wherein
    상기 정모멘트부 세그먼트 거더와 부모멘트부 세그먼트 거더(200)는 교대, 교각 및 가설 벤트에 거치 후 정모멘트부 세그먼트 거더의 교대측 단부와 교대 측 부근 복부와 정모멘트 세그먼트가 부모멘트 세그먼트와 접합하는 부분에서 연속연결 1차긴장 PS강선과 연속연결 2차긴장 및 유지관리용 PS강선과 연속연결 3차 긴장 PS강선에 의해 정.부모멘트부 세그먼트 거더가 전 구간에 일체로 연속 연결 및 접합 긴장되는 단면 강성이 증가된 프리스트레스트 콘크리트 세그먼트 거더.The constant moment segment girder and the parent moment segment girder 200 are mounted on the alternating, pier, and construction vents, and the abdominal side and the alternating side of the constant moment segment girder are joined to the parent moment segment. Continuous connection primary tension PS steel wire and continuous connection secondary tension and maintenance PS steel wire and continuous connection 3rd tension PS steel wire Prestressed concrete segment girder with increased cross stiffness.
PCT/KR2014/005148 2013-06-14 2014-06-12 Pre-stressed concrete girder segment having improved cross-sectional stiffness WO2014200272A1 (en)

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