WO2014200272A1 - Segment de poutre en béton précontraint présentant une rigidité en coupe améliorée - Google Patents

Segment de poutre en béton précontraint présentant une rigidité en coupe améliorée Download PDF

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Publication number
WO2014200272A1
WO2014200272A1 PCT/KR2014/005148 KR2014005148W WO2014200272A1 WO 2014200272 A1 WO2014200272 A1 WO 2014200272A1 KR 2014005148 W KR2014005148 W KR 2014005148W WO 2014200272 A1 WO2014200272 A1 WO 2014200272A1
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Prior art keywords
section
tension
girder
segment girder
segment
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PCT/KR2014/005148
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English (en)
Korean (ko)
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WO2014200272A9 (fr
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우경기술주식회사
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Publication of WO2014200272A1 publication Critical patent/WO2014200272A1/fr
Publication of WO2014200272A9 publication Critical patent/WO2014200272A9/fr

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • 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 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 height and long-span cross-sectional rigidity is possible
  • 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 the 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 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 the 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 girders in each 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. 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.
  • 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.
  • 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.
  • 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

Abstract

La présente invention concerne un segment de poutre en béton précontraint présentant une rigidité en coupe améliorée permettant de réaliser une faible hauteur et une longue portée ; caractérisé en ce que la coupe transversale du segment de poutre dans une région à moment négatif se présente sous forme de boîte, et la coupe transversale du segment de poutre dans une région à moment positif se présente sous forme de I ou de T, ce qui améliore la rigidité en coupe de la poutre ; et caractérisé en ce qu'une partie d'ancrage de câble d'acier de précontrainte est ménagée dans une partie d'extrémité d'une zone de support d'extrémité du segment de poutre dans la région à moment positif, dans une partie d'âme près de la zone de support d'extrémité, et dans une partie d'âme du segment dans la région à moment positif où la région à moment négatif et la région à moment positif se rejoignent mutuellement, ce qui facilite la formation de diverses parties d'ancrage telles qu'une première partie d'ancrage de tension, une deuxième partie d'ancrage de tension, une partie d'ancrage de maintien et une troisième partie d'ancrage de tension. En utilisant ces parties d'ancrage supplémentaires, la performance d'un joint de raccordement peut être améliorée, et la tension d'un segment de poutre peut être construite librement étape par étape selon le procédé de construction, ce qui est économique.
PCT/KR2014/005148 2013-06-14 2014-06-12 Segment de poutre en béton précontraint présentant une rigidité en coupe améliorée WO2014200272A1 (fr)

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KR10-2013-0068255 2013-06-14
KR20130068255A KR20140145746A (ko) 2013-06-14 2013-06-14 단면 강성이 증가된 프리스트레스트 콘크리트 세그먼트 거더

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WO2014200272A9 WO2014200272A9 (fr) 2015-03-05

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CN105369729A (zh) * 2015-12-11 2016-03-02 河南省交通规划设计研究院股份有限公司 一种体外预应力波形钢腹板t梁及施工方法
CN108086133A (zh) * 2018-02-08 2018-05-29 湖南工业大学 超高性能混凝土简支变连续梁布筋构造及其桥梁施工方法
CN109537467A (zh) * 2018-12-18 2019-03-29 中交天津航道局有限公司 一种箱梁预应力施工方法

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PH12017000176A1 (en) * 2017-06-16 2019-02-04 Wookyung Tech Co Ltd Psc girder bridge
KR102259140B1 (ko) * 2019-05-17 2021-06-01 에스오씨기술지주 주식회사 혁신적인 psc 단순교 시공방법
KR102151046B1 (ko) * 2019-09-23 2020-09-03 강용길 확대접합면을 가지는 고강도 분절 거더 및 고강도 분절 거더의 시공방법

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CN108086133A (zh) * 2018-02-08 2018-05-29 湖南工业大学 超高性能混凝土简支变连续梁布筋构造及其桥梁施工方法
CN109537467A (zh) * 2018-12-18 2019-03-29 中交天津航道局有限公司 一种箱梁预应力施工方法

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WO2014200272A9 (fr) 2015-03-05

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