WO2016200083A1 - Prestressed concrete girder - Google Patents

Prestressed concrete girder Download PDF

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Publication number
WO2016200083A1
WO2016200083A1 PCT/KR2016/005685 KR2016005685W WO2016200083A1 WO 2016200083 A1 WO2016200083 A1 WO 2016200083A1 KR 2016005685 W KR2016005685 W KR 2016005685W WO 2016200083 A1 WO2016200083 A1 WO 2016200083A1
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WO
WIPO (PCT)
Prior art keywords
flange portion
steel wire
lower flange
girder
segment member
Prior art date
Application number
PCT/KR2016/005685
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French (fr)
Korean (ko)
Inventor
임윤묵
이은호
Original Assignee
토웅이앤씨(주)
연세대학교 산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 토웅이앤씨(주), 연세대학교 산학협력단 filed Critical 토웅이앤씨(주)
Priority to CN201680033354.3A priority Critical patent/CN107810296B/en
Priority to MYPI2017704706A priority patent/MY192865A/en
Publication of WO2016200083A1 publication Critical patent/WO2016200083A1/en

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure

Definitions

  • the present invention relates to a prestressed concrete girder, and more particularly, to a prestressed concrete girder capable of producing a long span girder by applying a combination of pre-tension and post-tension.
  • a bridge in general, includes a pier, a plurality of girders, each end of which connects the pier and is spaced apart in the width direction of the leg, and a bottom plate mounted on an upper portion of the girder.
  • the girder is produced by applying a prestress by inserting a steel wire or a steel rod therein, and after tensioning the steel wire or steel rod by pre-tension girder, concrete pouring and curing before the concrete casting and curing It is divided into post tension girders that apply tension by penetrating steel wires or rods in the longitudinal direction.
  • the pretension girders are placed in a form of PS steel wire or PS steel rods in a form of tension while placing concrete while the concrete is hardened, and after the concrete hardens, release the tensile force of the PS steel wire or PS steel rods to give prestress to concrete. Will be.
  • the pretension girders can manufacture a large number of precast members having the same shape and dimensions, and there is an advantage in that the cross-section efficiency is high because no steel wire sheath or fixing device is required, but it is difficult to arrange the PS steel wire or the PS steel rod in a curved shape. There is a problem that is not suitable for the production of a large large girders member, there is a problem that it is difficult to manage the camber without some prestress is introduced into the PS steel wire fixing area of the end.
  • the post-tension girder is made by placing concrete in a form and curing, and after curing is completed, penetrates the PS steel wire or the PS steel rod in the longitudinal direction to fix both ends of the PS steel wire or the PS steel rod using the anchorage in the concrete to give prestress. Will be.
  • the post-tension girders can be arranged PS curves or PS steel rods in a curved shape is suitable for large structures, and the pre-stress can be easily introduced in the field because it supports the PS steel wires or PS steel rods to support the concrete member, Conveniently available for coupling and assembly of precast PC members, the PC member that is not attached does not require grouting, re-tension of PC steel, and also has the advantage of easy camber management.
  • the post-tension girder has a problem that the PC member which is not attached has a poor mechanical performance, such as a decrease in performance (strength expression) and a large crack width, and a sheath pipe, a fixing device, and the like, require material cost and There is a problem that the cross-sectional size is increased. In addition, there is a problem that the efficiency is reduced while arranging the PS steel wire or PS steel bar in a curved shape.
  • the girders are fabricated by applying post tension to the web flanges.
  • the 'reverse tee girder manufacturing method, the reverse tee girder, and the girder bridge using the same' is to manufacture the pre-tension to the lower flange, and to apply post-tension to the web flange formed by the site casting, the lower flange and the web flange portion
  • the connection part of is weak.
  • the compression by the pre-tension and the compression by the post-tension overlaps the lower part of the girder, so that the same effect is overlapped, and thus there is a limit that is inefficient in manufacturing a large girder member with a long diameter.
  • the present invention has the advantages of both post-tension and pre-tension can ensure the maximum rigidity with a small cross-sectional area to reduce the manufacturing cost of the medium-span member, and provides a prestressed concrete girder that enables the production of long span members of more than 60m There is.
  • the first girder segment member is applied to the pre-tension wire member is inserted into the pre-tension;
  • a second girder segment member disposed at one end portion in the longitudinal direction of the first girder segment member
  • a third girder segment member disposed at the other longitudinal end of the first girder segment member
  • the first girder segment member is provided with a first steel wire through hole penetrated in the longitudinal direction
  • the second girder segment member is provided with a second steel wire through hole communicating with the first steel wire through hole
  • the third girder segment member includes a third steel wire through hole communicating with the first steel wire through hole
  • the pretensioned steel wire member includes the second steel wire through hole, the first steel wire through hole, and the third steel wire. Both ends of the second girder segment member and the third girder segment member may be fixed to the fixing holes through the through holes.
  • the first girder segment member has a shape in which the first upper flange portion and the first lower flange portion are disposed horizontally on the upper and lower portions of the first abdomen, respectively, and the second girder segment member is formed of the first girder segment member.
  • the second upper flange portion and the second lower flange portion disposed horizontally on the upper and lower portions of the second abdomen, respectively, the shape is provided, wherein the third girder segment member is disposed on the upper and lower portions of the third abdomen, respectively And a third upper flange portion and a third lower flange portion, wherein the pretensioned steel wire member is disposed in a straight shape on the first abdomen, and the post-tensioned steel wire member is the second lower flange portion and the first lower flange portion. It may be arranged in a straight line through the lower flange portion, the third lower flange portion.
  • the pretensioned steel wire member may be provided in plural to be spaced apart in the up and down directions, and the post-tensioned steel wire member may be provided in plural to be spaced apart in the horizontal direction.
  • the front end side of the first girder segment member has a shape that is consistent with the rear end side of the second girder segment member, and the rear end side of the first girder segment member is the front end of the third girder segment member. It has a shape coincident with the front side of the side, the second lower flange portion has a shape that gradually increases in height from the end portion side toward the tip side, the third lower flange portion, the first lower flange portion, from the end side side to the tip side. It may have a shape that gradually increases in height.
  • the lower surface of the second lower flange portion of the second girder segment member is in a state where the lower surface is coincident with the lower surface of the first lower flange portion of the first girder segment member.
  • the third lower flange portion has a shape that gradually increases in height, and the upper surface gradually increases from the end side to the tip side in a state in which a lower surface of the third lower flange portion coincides with a lower surface of the first lower flange portion of the first girder segment member. May have a shape that increases.
  • the height of the distal end side of the second lower flange portion and the height of the distal end side of the third lower flange portion may be formed to have a height greater than 1/2 of the height of the first girder segment member.
  • the first lower flange portion is formed in a shape in which the width is narrowest in the center and gradually widens toward both end portions, and may be formed in a curved shape on a plane.
  • the post-tensioned steel wire member includes a straight wire portion disposed in a straight line through the second lower flange portion, the first lower flange portion, and the third lower flange portion; And a first penetrating portion of the first lower flange portion in a straight line shape, one end of which is curved in an upper side from the second lower flange portion to be fixed to the upper side of the straight steel wire portion, and the other end is upper portion of the third lower flange portion. It may include a curved steel wire portion that is bent in a curved shape toward the side and fixed to the upper side of the straight steel wire portion.
  • the curved steel wire portion one end portion is curved to the second abdomen through the second lower flange portion is fixed to the second abdomen, the other end is the third abdomen through the second lower flange portion It is extended in the furnace curve may be fixed to the third abdomen.
  • the present invention has the advantages of both post-tension girders and pre-tension girders to produce a large number of precast members of the same shape and dimensions, high cross-sectional efficiency, easy to introduce prestress in the field, precast PC members It can be conveniently used for assembling and assembling, re-tensioning of PC steel, and easy to manage camber.
  • the present invention can reduce the cross section compared to the existing post-tension girders and pre-tension girders, by applying a part of the pre-tension method to reduce the material cost, it is effective to enable the efficient use of the material.
  • the present invention can control the tension of the upper part of the girder generated during post-tension by introducing a pre-tension member in the shear state compression state (introducing more compression force in the upper part of the girder) in the center span to maximize the introduction of the prestressing force to the cross section of the mid span member.
  • the efficiency can be greatly improved and the manufacturing cost can be reduced, and there is an effect of making it possible to manufacture a large-sized large member having a length of 60 m or more of low shape and low cost.
  • FIG. 1 is a perspective view showing an embodiment of a prestressed concrete girder according to the present invention
  • Figure 2 is a side view showing an embodiment of a prestressed concrete girder according to the present invention
  • FIG. 3 is a plan sectional view showing an embodiment of a prestressed concrete girder according to the present invention.
  • FIG. 4 is a front view showing an embodiment of a prestressed concrete girder according to the present invention
  • FIG. 5 is a cross-sectional view taken along line AA ′ of FIG. 3;
  • FIG. 6 is a side view showing another embodiment of a prestressed concrete girder according to the present invention.
  • FIG. 7 is a front view showing another embodiment of a prestressed concrete girder according to the present invention.
  • FIG. 8 is a side view showing another embodiment of a prestressed concrete girder according to the present invention.
  • FIG. 9 is a front view showing another embodiment of a prestressed concrete girder according to the present invention.
  • FIG. 10 is a front view showing another embodiment of a prestressed concrete girder according to the present invention.
  • FIG. 11 is a cross-sectional view showing another embodiment of a prestressed concrete girder according to the present invention.
  • first girder segment member 10a pretensioned steel wire member
  • first abdomen 12 first upper flange
  • first lower flange portion 20 second girder segment member
  • 40a straight steel wire portion
  • 40b curved steel wire portion
  • FIG. 1 is a perspective view showing an embodiment of a prestressed concrete girder according to the present invention
  • Figure 2 is a side view showing an embodiment of a prestressed concrete girder according to the present invention
  • Figure 3 is a prestressed concrete girder according to the present invention 4 is a cross-sectional view showing one embodiment of
  • Figure 4 is a front view showing an embodiment of a prestressed concrete girder according to the present invention
  • Figure 5 is a cross-sectional view AA 'of FIG.
  • the present invention relates to a prestressed concrete girder, and referring to FIGS. 1 to 5, a pretension steel wire member 10a is inserted therein to include a first girder segment member 10 to which pretension is applied.
  • the first girder segment member 10 has a second girder segment member 20 and a third girder segment member 30 disposed at both ends in the longitudinal direction, respectively, and are connected to each other by a post tension steel wire member 40. Form a girder.
  • pretensioned wire member 10a and the post-tensioned wire member 40 may be a PC steel wire or a PC steel rod, and any one applying prestress may be used.
  • the first girder segment member 10 is disposed in the center between the second girder segment member 20 and the third girder segment member 30, and is manufactured by applying pretension.
  • the first girder segment member 10 is made by placing concrete while giving tension to the pretensioned steel wire member 10a in the formwork and slowly unwinding the tensile force of the pretensioned steel wire member 10a after the concrete is hardened.
  • the first girder segment member 10 is manufactured to have a first steel wire through-hole penetrated in the longitudinal direction.
  • the first girder segment member 10 is tensioned by applying a tension to the pretensioned steel wire member 10a in the formwork, and the first sheath pipe 41 through which the post-tensioned steel wire member 40 can pass. It is produced by reclaiming.
  • the first girder segment member 10 may include a first steel wire through-hole formed by filling the first sheath tube 41 in the longitudinal direction and penetrating to both ends thereof.
  • first girder segment member 10 has a shape in which the first upper flange portion 12 and the first lower flange portion 13 are disposed horizontally on the upper and lower portions of the first abdomen 11, respectively.
  • the second girder segment member 20 is provided with a second steel wire passage hole communicating with the first steel wire passage hole, and the second sheath tube in a position where the second girder segment member can communicate with the first sheath tube 41. It is produced by embedding 42.
  • the second girder segment member 20 has a second sheath tube 42 communicating with the first sheath tube 41 in a longitudinal direction and is penetrated at both ends so that the post tension steel wire member 40 passes. For example, forming a second steel wire through hole.
  • the second girder segment member 20 has a shape in which the second upper flange portion 22 and the second lower flange portion 23 are disposed horizontally on the upper and lower portions of the second abdomen 21, respectively.
  • the third girder segment member 30 is provided with a third steel wire passage hole communicating with the first steel wire passage hole, and a third sheath tube in a position that can communicate with the first sheath tube 41 in the formwork. It is produced by embedding 43.
  • the third girder segment member 30 has a third sheath tube 43 communicating with the first sheath tube 41 in a longitudinal direction and is penetrated at both ends so that the post tension steel wire member 40 passes.
  • the third steel wire through hole is formed.
  • the third girder segment member 30 has a shape in which the third upper flange portion 32 and the third lower flange portion 33 are disposed horizontally on the upper and lower portions of the third abdomen 31, respectively.
  • the pretensioned steel wire member 10a penetrates through the second steel wire through hole, the first steel wire through hole, and the third steel wire through hole to pass through the second girder segment member 20 and the third girder segment member 30.
  • Pre-stress is applied to the second girder segment member 20, the first girder segment member 10, and the third girder segment member 30, both ends of which are fixed to the end of the bottom side and disposed in the longitudinal direction. .
  • post-tensioning causes the critical points to become tensioned at the top of the girder (usually at the top of the center) by the post-tension, which exceeds the tensile strength and no longer tensions.
  • the present invention arranges the first girder segment member 10 to which prestress is applied, and post-tensions the second girder segment member 20 and the third girder segment member 30 respectively disposed at both ends.
  • prestressing By applying prestressing, the upper part of the girder center is not compressed but compressed, so that the larger post tension can be applied to the whole, so that the post tension can be introduced more efficiently, reducing the length and weight of the girder and having a long span of more than 60m.
  • the girder can be manufactured substantially, and the stability of the long span girders is greatly improved.
  • the pretensioned steel wire member 10a may be disposed in a straight line shape in the first abdomen 11 and provided in plural to be spaced apart in the up and down directions.
  • the post tension steel wire member 40 is disposed in a straight line through the second lower flange portion 23, the first lower flange portion 13, and the third lower flange portion 33, and the pretension.
  • Steel wire member (10a) is preferably provided in plurality in the horizontal direction spaced apart.
  • the second sheath tube 42 and the third sheath tube 43 connected to both ends of the first sheath tube 41 and the first sheath tube 41 are disposed in a straight line.
  • the post tension steel wire member 40 is disposed in a straight line through the second sheath pipe 42, the first sheath pipe 41, and the third sheath pipe 43, and both ends of the post tension steel wire member 40 are disposed in the fixing tool. Prestressing is applied to the first girder segment member 10, the second girder segment member 20, and the third girder segment member 30 which are fixed to each other and are connected to each other in a longitudinal direction to form a straight integral girder. will be.
  • the pretensioned steel wire member 10a and the post-tensioned steel wire member 40 are arranged in a straight line on the abdomen and the lower flange portion, the workability of the installation can be greatly enhanced, so that an efficient and economical girder can be manufactured.
  • the minimum coating thickness and minimum spacing of the PSC girder can be arranged in accordance with the regulations to meet the requirements for the actual production of the PSC girder.
  • the problem of concentration of prestress can be solved at both ends of the PSC girder, so that the end cracking problem of the PPS girder can be solved, so that the usability of the PSC girder can be improved, and in particular, when manufacturing a long span PSC girder, Problems caused by the arrangement of the pretensioned wire member 10a and the post-tensioned wire member 40 and relaxation of the prestress may be solved.
  • the front end side of the first girder segment member 10 is a terminal end side of the second girder segment member 20. It has a shape consistent with the rear surface, the rear end portion side of the first girder segment member 10 has a shape coinciding with the front end portion side of the third girder segment member 30.
  • the second lower flange portion 23 of the second girder segment member 20 has a shape that gradually increases in height from the end portion side to the tip portion side.
  • the second lower flange portion 23 of the second girder segment member 20 has a lower surface coincided with a lower surface of the first lower flange portion 13 of the first girder segment member 10.
  • the upper surface has a shape in which the height gradually increases from the end side to the tip side.
  • the third lower flange portion 33 of the third girder segment member 30 has a shape in which the first lower flange portion 13 gradually increases in height from the end side to the front end side.
  • the third lower flange portion 33 of the third girder segment member 30 has a lower surface coincided with a lower surface of the first lower flange portion 13 of the first girder segment member 10.
  • the upper surface has a shape in which the height gradually increases from the end side to the tip side.
  • the height of the tip end side of the second lower flange portion 23 and the height of the end portion side of the third lower flange portion 33 may be formed to have a height greater than 1/2 of the height of the first girder segment member 10. .
  • the first lower flange portion 13 is formed in a shape where the width is narrowest at the center and gradually widens toward both end portions, and is preferably formed in a curved shape on a plane. That is, the first lower flange portion 13 is formed to have the same height throughout the length, both sides are formed to be curved to minimize the use of the concrete material used in manufacturing. In addition, the overall weight of the girder is reduced to improve the section efficiency.
  • the second lower flange portion 23 and the third lower flange portion 33 are formed with a height toward the end side of the pre-tensioned steel wire member 10a and the post-tensioned steel wire member ( In addition to having a rigidity to support the prestress by 40) it is possible to minimize the use of the concrete material used in the production.
  • Figure 6 is a side view showing another embodiment of the prestressed concrete girder according to the present invention
  • Figure 7 is a front view of the prestressed concrete girder of Figure 6, referring to Figures 6 and 7 the post-tension wire member 40 ) Is a straight steel wire portion 40a disposed in a straight line through the second lower flange portion 23, the first lower flange portion 13, and the third lower flange portion 33; And a first penetrating through the first lower flange portion 13 in a straight line shape, one end of which is curved in a curved shape from the second lower flange portion 23 to an upper side, and is fixed to the upper side of the straight steel wire portion 40a.
  • An end portion may include a curved steel wire portion 40b that is curved in an upper side from the third lower flange portion 33 and is fixed to an upper side of the straight steel wire portion 40a.
  • one end portion of the curved steel wire portion 40b extends in a curved shape to the second abdomen 21 through the second lower flange portion 23 and the second abdomen ( 21 may be fixed, and the other end may be curved to extend to the third abdomen 31 via the second lower flange portion 23 to be fixed to the third abdomen 31.
  • the upper surface of the second lower flange portion 23 is formed to be inclined so as to gradually increase from both side end portion to the center shape to greatly reinforce the rigidity for the connecting portion of the flange and the abdomen It may have a, in addition to that it is possible to deform in a variety of known shapes.
  • the present invention has the advantages of both post-tension girders and pre-tension girders to produce a large number of precast members of the same shape and dimensions, high cross-sectional efficiency, easy to introduce prestress in the field, precast PC members It can be conveniently used for assembling and assembling, re-tensioning of PC steel, and easy to manage camber.
  • the present invention can reduce the cross-section compared to the existing post-tension girders and pre-tension girders, by applying a part of the pre-tension method to reduce the material cost, and enables the efficient use of the material.
  • the present invention can control the tension of the upper part of the girder generated during post-tension by introducing a pre-tension member in the shear state compression (introducing more compression force on the girder) in the center span to maximize the introduction of the prestressing force to the cross section of the mid span member. It greatly improves the efficiency and reduces the manufacturing cost of the middle span member, and makes it possible to manufacture a large span large member having a length of 60m or more with a low profile and low cost.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Bridges Or Land Bridges (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

The present invention relates to a prestressed concrete girder. After a second girder segment member and a third girder segment member are disposed on either end of a first girder segment member to which pretension is applied, post tensioning steel cable members are passed through the second girder segment member, the first girder segment member, and the third girder segment member in the lengthwise directions thereof, and post tension is applied. Thus, in a compressed instead of stretched state brought about by prestress for the central top of the girders, a greater post tension may be exerted on the overall structure. Therefore, more efficient post tensioning may be introduced so as to reduce the length and weight of girders and enable the actual manufacture of girders having a 60m or greater long-span.

Description

프리스트레스 콘크리트 거더Prestressed concrete girder
본 발명은 프리스트레스 콘크리트 거더에 관한 것으로 더 상세하게는 프리텐션 및 포스트텐션이 복합적으로 적용되어 장경간의 거더를 제작할 수 있는 프리스트레스 콘크리트 거더에 관한 것이다.The present invention relates to a prestressed concrete girder, and more particularly, to a prestressed concrete girder capable of producing a long span girder by applying a combination of pre-tension and post-tension.
일반적으로 교량은 교각과, 양 단부가 각각 상기 교각을 연결하며 다리의 폭 방향으로 이격되게 배치되는 복수의 거더, 상기 거더의 상부에 올려지는 바닥판을 포함한다.In general, a bridge includes a pier, a plurality of girders, each end of which connects the pier and is spaced apart in the width direction of the leg, and a bottom plate mounted on an upper portion of the girder.
상기 거더는, 내부에 강선 또는 강봉을 삽입하여 프리스트레스를 가해 제작되고 있으며 상기 강선 또는 강봉을 긴장함에 있어서 콘크리트 타설 및 양생 전에 강선 또는 강봉을 삽입하여 긴장하여 제작되는 프리텐션 거더, 콘크리트 타설 및 양생 후 강선 또는 강봉을 길이 방향으로 관통시켜 긴장을 가하는 포스트텐션 거더로 구분된다.The girder is produced by applying a prestress by inserting a steel wire or a steel rod therein, and after tensioning the steel wire or steel rod by pre-tension girder, concrete pouring and curing before the concrete casting and curing It is divided into post tension girders that apply tension by penetrating steel wires or rods in the longitudinal direction.
더 상세하게 상기 프리텐션 거더는 거푸집 내에 PS강선 또는 PS강봉에 인장력을 주어 긴장해 놓은 채 콘크리트를 타설하고 콘크리트가 경화한 후에 PS강선 또는 PS강봉의 인장력을 서서히 풀어서 콘크리트에 프리스트레스를 주는 방식으로 제작되는 것이다.In more detail, the pretension girders are placed in a form of PS steel wire or PS steel rods in a form of tension while placing concrete while the concrete is hardened, and after the concrete hardens, release the tensile force of the PS steel wire or PS steel rods to give prestress to concrete. Will be.
상기 프리텐션 거더는 동일한 형상과 치수의 프리캐스트 부재를 대량으로 제조 가능하며, 강선쉬스, 정착장치 등이 필요없기 때문에 단면 효율이 높은 장점이 있으나 PS강선 또는 PS강봉을 곡선으로 배치하기 어려워 장경간이 큰 대형 거더부재의 제작에는 적합하지 않은 문제점이 있고, 단부의 PS강선 정착구역에는 일부 프리스트레스가 도입되지 않고 캠버를 관리하는 데 어려움이 있는 문제점이 있다.The pretension girders can manufacture a large number of precast members having the same shape and dimensions, and there is an advantage in that the cross-section efficiency is high because no steel wire sheath or fixing device is required, but it is difficult to arrange the PS steel wire or the PS steel rod in a curved shape. There is a problem that is not suitable for the production of a large large girders member, there is a problem that it is difficult to manage the camber without some prestress is introduced into the PS steel wire fixing area of the end.
상기 포스트텐션 거더는 거푸집 내에서 콘크리트를 타설하고 양생하여 경화 완료된 후 PS강선 또는 PS강봉을 길이방향으로 관통시켜 PS강선 또는 PS강봉의 양단부를 콘크리트에 정착구를 이용하여 정착하여 프리스트레스를 주는 방식으로 제작되는 것이다.The post-tension girder is made by placing concrete in a form and curing, and after curing is completed, penetrates the PS steel wire or the PS steel rod in the longitudinal direction to fix both ends of the PS steel wire or the PS steel rod using the anchorage in the concrete to give prestress. Will be.
상기 포스트텐션 거더는, PS강선 또는 PS강봉을 곡선상으로 배치할 수 있어서 대형구조물에 적합하고, 콘크리트부재를 받침으로 하여 PS강선 또는 PS강봉을 인장하기 때문에 현장에서 쉽게 프리스트레스를 도입할 수 있고, 프리캐스트 PC부재의 결합과 조립에 편리하게 이용가능하며, 부착시키지 않은 PC부재는 그라우팅이 필요하지 않고 PC강재의 재 긴장도 가능할 뿐만 아니라 캠버관리가 용이한 장점이 있다.The post-tension girders can be arranged PS curves or PS steel rods in a curved shape is suitable for large structures, and the pre-stress can be easily introduced in the field because it supports the PS steel wires or PS steel rods to support the concrete member, Conveniently available for coupling and assembly of precast PC members, the PC member that is not attached does not require grouting, re-tension of PC steel, and also has the advantage of easy camber management.
그러나, 상기 포스트텐션 거더는 부착시키지 않은 PC부재는 부착시킨 PC부재에 비해 성능(강도발현)이 떨어지고 균열폭이 커지는 등 역학적 성능이 떨어지는 문제가 있고, 쉬스관, 정착장치 등이 필요하기 때문에 재료비 및 단면크기가 증가하는 문제점이 있다. 또한, PS강선 또는 PS강봉을 곡선상으로 배치하면서 효율성이 감소하는 문제점이 있었다.However, the post-tension girder has a problem that the PC member which is not attached has a poor mechanical performance, such as a decrease in performance (strength expression) and a large crack width, and a sheath pipe, a fixing device, and the like, require material cost and There is a problem that the cross-sectional size is increased. In addition, there is a problem that the efficiency is reduced while arranging the PS steel wire or PS steel bar in a curved shape.
본 발명과 관련 선행 기술로 국내특허공개 제2009-0030538호 '역티형 거더 제작방법, 이에 의한 역티형 거더, 및 이를 이용한 거더교'가 있고, 상기 '역티형 거더 제작방법, 이에 의한 역티형 거더, 및 이를이용한 거더교'는 프리 텐션이 가해진 하부 플랜지를 사전 제작하는 단계, 사전 제작된 하부 플랜지(150)에 결합되는 웹 플랜지(170)가 형성되도록 콘크리트를 현장 타설하는 단계, 및 현장 타설에 의해 형성된 웹 플랜지에 포스트텐션을 가하는 단계로 거더를 제작하고 있습니다.Korean Patent Publication No. 2009-0030538 'Reverse Tee-type girder manufacturing method, reverse tea-type girder, and girder bridge using the same' as the present invention and related prior art, the 'reverse tea-type girder manufacturing method, inverted tea-type girder, And a girder bridge using the pre-tension, the pre-tensioned lower flange is prefabricated, the site is cast by concrete so that the web flange 170 is coupled to the prefabricated lower flange 150, and the site is formed by site casting. The girders are fabricated by applying post tension to the web flanges.
그러나, 상기 '역티형 거더 제작방법, 이에 의한 역티형 거더, 및 이를이용한 거더교'는 프리 텐션을 하부 플랜지로 제작하고, 현장 타설로 형성된 웹플랜지에 포스트텐션을 가하는 것으로, 하부 플랜지와 웹 플랜지부의 연결부분이 취약하여 실제 프리 텐션과 포스트텐션을 동시에 적용시키는 것이 사실상 불가능한 문제점이 있다.However, the 'reverse tee girder manufacturing method, the reverse tee girder, and the girder bridge using the same' is to manufacture the pre-tension to the lower flange, and to apply post-tension to the web flange formed by the site casting, the lower flange and the web flange portion There is a problem that it is virtually impossible to apply the actual pre-tension and post-tension at the same time because the connection part of is weak.
또한, 거더 하부에 프리텐션에 의한 압축과 포스트텐션에 의한 압축이 중첩되어 같은 효과가 중첩되는 것으로 특별한 효과를 발생시키지 않고, 장경간의 대형거더부재 제작에 비효율적인 한계가 있다.In addition, the compression by the pre-tension and the compression by the post-tension overlaps the lower part of the girder, so that the same effect is overlapped, and thus there is a limit that is inefficient in manufacturing a large girder member with a long diameter.
상기한 문제점으로 종래 프리텐션 거더 또는 포스트텐션 거더로는 60m이상의 장경간부재의 제작이 실질적으로 불가능했던 것이다.Due to the above problems, it was not possible to manufacture a long span member of 60 m or more with a conventional pretension girder or post tension girder.
본 발명은 포스트텐션과 프리텐션의 장점을 모두 가져 적은 단면적으로 강성을 최대한 크게 확보할 수 있어 중경간부재의 제조 비용을 절감할 수 있고, 60m이상의 장경간부재의 제작을 가능하게 하는 프리스트레스 콘크리트 거더를 제공하는 데 있다.The present invention has the advantages of both post-tension and pre-tension can ensure the maximum rigidity with a small cross-sectional area to reduce the manufacturing cost of the medium-span member, and provides a prestressed concrete girder that enables the production of long span members of more than 60m There is.
상기 목적을 달성하기 위한 본 발명의 일 실시예에 의한 프리스트레스 콘크리트 거더는, 내부에 프리텐션 강선부재가 삽입되어 프리텐션이 적용된 제1거더 세그먼트부재;Prestressed concrete girder according to an embodiment of the present invention for achieving the above object, the first girder segment member is applied to the pre-tension wire member is inserted into the pre-tension;
상기 제1거더 세그먼트부재의 길이방향 일단부에 배치되는 제2거더 세그먼트부재; A second girder segment member disposed at one end portion in the longitudinal direction of the first girder segment member;
상기 제1거더 세그먼트부재의 길이방향 타단부에 배치되는 제3거더 세그먼트부재; 및 A third girder segment member disposed at the other longitudinal end of the first girder segment member; And
상기 제2거더 세그먼트부재, 상기 제1거더 세그먼트부재, 상기 제3거더 세그먼트부재의 길이방향으로 관통되어 포스트텐션을 적용시키는 포스트텐션 강선부재를 포함하는 것을 특징으로 한다.And a post tension steel wire member penetrating in the longitudinal direction of the second girder segment member, the first girder segment member, and the third girder segment member to apply post tension.
본 발명에서 상기 제1거더 세그먼트부재는 길이방향으로 관통된 제1강선 통과구멍이 구비되고, 상기 제2거더 세그먼트부재는, 상기 제1강선 통과구멍과 연통되는 제2강선통과구멍이 구비되며, 상기 제3거더 세그먼트부재는, 상기 제1강선 통과구멍과 연통되는 제3강선통과구멍이 구비되고, 상기 프리텐션 강선부재는 상기 제2강선 통과구멍, 상기 제1강선 통과구멍, 상기 제3강선 통과구멍을 관통하여 상기 제2거더 세그먼트부재와 상기 제3거더 세그먼트부재의 단부 측에 양단부가 정착구로 정착될 수 있다.In the present invention, the first girder segment member is provided with a first steel wire through hole penetrated in the longitudinal direction, and the second girder segment member is provided with a second steel wire through hole communicating with the first steel wire through hole. The third girder segment member includes a third steel wire through hole communicating with the first steel wire through hole, and the pretensioned steel wire member includes the second steel wire through hole, the first steel wire through hole, and the third steel wire. Both ends of the second girder segment member and the third girder segment member may be fixed to the fixing holes through the through holes.
본 발명에서 상기 제1거더 세그먼트부재는, 제1복부의 상부 및 하부에 각각 가로로 배치되는 제1상부플랜지부와 제1하부플랜지부가 구비되는 형상을 가지며, 상기 제2거더 세그먼트부재는, 제2복부의 상부 및 하부에 각각 가로로 배치되는 제2상부플랜지부와 제2하부플랜지부가 구비되는 형상을 가지고, 상기 제3거더 세그먼트부재는, 제3복부의 상부 및 하부에 각각 가로로 배치되는 제3상부플랜지부와 제3하부플랜지부가 구비되는 형상을 가지며, 상기 프리텐션 강선부재는 상기 제1복부에서 직선형태로 배치되고, 상기 포스트텐션 강선부재는 상기 제2하부플랜지부, 상기 제1하부플랜지부, 상기 제3하부플랜지부를 관통하여 직선형태로 배치될 수 있다.In the present invention, the first girder segment member has a shape in which the first upper flange portion and the first lower flange portion are disposed horizontally on the upper and lower portions of the first abdomen, respectively, and the second girder segment member is formed of the first girder segment member. The second upper flange portion and the second lower flange portion disposed horizontally on the upper and lower portions of the second abdomen, respectively, the shape is provided, wherein the third girder segment member is disposed on the upper and lower portions of the third abdomen, respectively And a third upper flange portion and a third lower flange portion, wherein the pretensioned steel wire member is disposed in a straight shape on the first abdomen, and the post-tensioned steel wire member is the second lower flange portion and the first lower flange portion. It may be arranged in a straight line through the lower flange portion, the third lower flange portion.
본 발명에서 상기 프리텐션 강선부재는 상, 하 방향으로 이격되게 복수로 구비되고, 상기 포스트텐션 강선부재는 가로 방향으로 이격되게 복수로 구비될 수 있다.In the present invention, the pretensioned steel wire member may be provided in plural to be spaced apart in the up and down directions, and the post-tensioned steel wire member may be provided in plural to be spaced apart in the horizontal direction.
본 발명에서 상기 제1거더 세그먼트부재의 선단부측 전면은 상기 제2거더 세그먼트부재의 종단부측 후면과 일치되는 형상을 가지며, 상기 제1거더 세그먼트부재의 종단부측 후면은 상기 제3거더 세그먼트부재의 선단부측 전면과 일치되는 형상을 가지고, 상기 제2하부플랜지부는, 종단부 측에서 선단부측으로 갈수록 점차 높이가 높아지는 형상을 가지며, 상기 제3하부플랜지부는 상기 제1하부플랜지부는, 종단부 측에서 선단부측으로 갈수록 점차 높이가 높아지는 형상을 가질 수 있다.In the present invention, the front end side of the first girder segment member has a shape that is consistent with the rear end side of the second girder segment member, and the rear end side of the first girder segment member is the front end of the third girder segment member. It has a shape coincident with the front side of the side, the second lower flange portion has a shape that gradually increases in height from the end portion side toward the tip side, the third lower flange portion, the first lower flange portion, from the end side side to the tip side. It may have a shape that gradually increases in height.
본 발명에서 상기 제2거더 세그먼트부재의 상기 제2하부플랜지부는 하부면이 상기 제1거더 세그먼트부재의 상기 제1하부플랜지부의 하부면과 일치된 상태에서 상부면이 종단부 측에서 선단부측으로 갈수록 점차 높이가 높아지는 형상을 가지며, 상기 제3하부플랜지부는 하부면이 상기 제1거더 세그먼트부재의 상기 제1하부플랜지부의 하부면과 일치된 상태에서 상부면이 종단부 측에서 선단부측으로 갈수록 점차 높이가 높아지는 형상을 가질 수 있다.In the present invention, the lower surface of the second lower flange portion of the second girder segment member is in a state where the lower surface is coincident with the lower surface of the first lower flange portion of the first girder segment member. The third lower flange portion has a shape that gradually increases in height, and the upper surface gradually increases from the end side to the tip side in a state in which a lower surface of the third lower flange portion coincides with a lower surface of the first lower flange portion of the first girder segment member. May have a shape that increases.
본 발명에서 상기 제2하부플랜지부의 선단부측 높이와 상기 제3하부플랜지부의 종단부측 높이는 상기 제1거더 세그먼트부재 높이의 1/2 보다 큰 높이로 형성될 수 있다.In the present invention, the height of the distal end side of the second lower flange portion and the height of the distal end side of the third lower flange portion may be formed to have a height greater than 1/2 of the height of the first girder segment member.
본 발명에서 상기 제1하부플랜지부는, 폭이 중앙에서 가장 좁고 양단부측으로 갈수록 점차 폭이 커지는 형상으로 형성되고, 평면상에서 곡선형태로 형성될 수 있다.In the present invention, the first lower flange portion is formed in a shape in which the width is narrowest in the center and gradually widens toward both end portions, and may be formed in a curved shape on a plane.
본 발명에서 상기 포스트텐션 강선부재는 상기 제2하부플랜지부 상기 제1하부플랜지부, 상기 제3하부플랜지부를 관통하여 직선형태로 배치되는 직선강선부; 및 상기 제1하부플랜지부를 직선형태로 관통하고, 일단부가 상기 제2하부플랜지부에서 상부 측으로 곡선형태로 휘어져 상기 직선강선부의 상부 측에 정착되고, 타단부가 상기 제3하부플랜지부에서 상부 측으로 곡선형태로 휘어져 거쳐 상기 직선강선부의 상부 측에 정착되는 곡선강선부를 포함할 수 있다.In the present invention, the post-tensioned steel wire member includes a straight wire portion disposed in a straight line through the second lower flange portion, the first lower flange portion, and the third lower flange portion; And a first penetrating portion of the first lower flange portion in a straight line shape, one end of which is curved in an upper side from the second lower flange portion to be fixed to the upper side of the straight steel wire portion, and the other end is upper portion of the third lower flange portion. It may include a curved steel wire portion that is bent in a curved shape toward the side and fixed to the upper side of the straight steel wire portion.
본 발명에서 상기 곡선강선부는, 일단부가 상기 제2하부플랜지부를 거쳐 상기 제2복부로 곡선으로 연장되어 상기 제2복부에 정착되고, 타단부가 상기 제2하부플랜지부를 거쳐 상기 제3복부로 곡선으로 연장되어 상기 제3복부에 정착될 수 있다.In the present invention, the curved steel wire portion, one end portion is curved to the second abdomen through the second lower flange portion is fixed to the second abdomen, the other end is the third abdomen through the second lower flange portion It is extended in the furnace curve may be fixed to the third abdomen.
본 발명은 포스트텐션 거더와 프리텐션 거더의 장점을 모두 가져 동일한 형상과 치수의 프리캐스트 부재를 대량으로 제조 가능하며, 단면 효율이 높을 뿐 아니라 현장에서 쉽게 프리스트레스를 도입할 수 있고, 프리캐스트 PC부재의 결합과 조립에 편리하게 이용가능하며 PC강재의 재긴장도 가능하며 캠버관리가 용이한 효과가 있다.The present invention has the advantages of both post-tension girders and pre-tension girders to produce a large number of precast members of the same shape and dimensions, high cross-sectional efficiency, easy to introduce prestress in the field, precast PC members It can be conveniently used for assembling and assembling, re-tensioning of PC steel, and easy to manage camber.
본 발명은 기존 포스트텐션 거더와 프리텐션 거더 대비 단면을 슬림화할 수 있으며 프리텐션 방식을 일부 적용하여 재료 비용을 감소시키고, 재료의 효율적인 사용이 가능하게 하는 효과가 있다. The present invention can reduce the cross section compared to the existing post-tension girders and pre-tension girders, by applying a part of the pre-tension method to reduce the material cost, it is effective to enable the efficient use of the material.
본 발명은 중앙경간에 전단면 압축상태(거더 상부에 좀더 많은 압축력 도입)의 프리텐션부재를 도입함으로써 포스트텐션시 발생되는 거더상부 인장력을 제어하여 프리스트레싱력의 도입을 극대화할 수 있어 중경간부재의 단면효율을 크게 향상시키며 제조 비용을 절감할 수 있고, 저형고, 저비용의 60m 이상의 길이를 가지는 장경간의 대형부재의 제작을 실질적으로 가능하게 하는 효과가 있다.The present invention can control the tension of the upper part of the girder generated during post-tension by introducing a pre-tension member in the shear state compression state (introducing more compression force in the upper part of the girder) in the center span to maximize the introduction of the prestressing force to the cross section of the mid span member. The efficiency can be greatly improved and the manufacturing cost can be reduced, and there is an effect of making it possible to manufacture a large-sized large member having a length of 60 m or more of low shape and low cost.
도 1은 본 발명에 따른 프리스트레스 콘크리트 거더의 일 실시예를 도시한 사시도,1 is a perspective view showing an embodiment of a prestressed concrete girder according to the present invention,
도 2는 본 발명에 따른 프리스트레스 콘크리트 거더의 일 실시예를 도시한 측면도,Figure 2 is a side view showing an embodiment of a prestressed concrete girder according to the present invention,
도 3은 본 발명에 따른 프리스트레스 콘크리트 거더의 일 실시예를 도시한 평단면도,3 is a plan sectional view showing an embodiment of a prestressed concrete girder according to the present invention;
도 4는 본 발명에 따른 프리스트레스 콘크리트 거더의 일 실시예를 도시한 정면도,4 is a front view showing an embodiment of a prestressed concrete girder according to the present invention,
도 5는 도 3의 A-A' 단면도,5 is a cross-sectional view taken along line AA ′ of FIG. 3;
도 6은 본 발명에 따른 프리스트레스 콘크리트 거더의 다른 실시예를 도시한 측면도,6 is a side view showing another embodiment of a prestressed concrete girder according to the present invention;
도 7은 본 발명에 따른 프리스트레스 콘크리트 거더의 다른 실시예를 도시한 정면도,7 is a front view showing another embodiment of a prestressed concrete girder according to the present invention,
도 8은 본 발명에 따른 프리스트레스 콘크리트 거더의 또 다른 실시예를 도시한 측면도,8 is a side view showing another embodiment of a prestressed concrete girder according to the present invention;
도 9는 본 발명에 따른 프리스트레스 콘크리트 거더의 또 다른 실시예를 도시한 정면도,9 is a front view showing another embodiment of a prestressed concrete girder according to the present invention,
도 10은 본 발명에 따른 프리스트레스 콘크리트 거더의 또 다른 실시예를 도시한 정면도,10 is a front view showing another embodiment of a prestressed concrete girder according to the present invention,
도 11은 본 발명에 따른 프리스트레스 콘크리트 거더의 또 다른 실시예를 도시한 단면도이다.11 is a cross-sectional view showing another embodiment of a prestressed concrete girder according to the present invention.
[도면부호][Drawing code]
10 : 제1거더 세그먼트부재 10a : 프리텐션 강선부재10: first girder segment member 10a: pretensioned steel wire member
11 : 제1복부 12 : 제1상부플랜지부11: first abdomen 12: first upper flange
13 : 제1하부플랜지부 20 : 제2거더 세그먼트부재13: first lower flange portion 20: second girder segment member
21 : 제2복부 22 : 제2상부플랜지부21: second abdomen 22: the second upper flange
23 : 제2하부플랜지부 30 : 제3거더 세그먼트부재23: second lower flange portion 30: third girder segment member
31 : 제3복부 32 : 제3상부플랜지부31: third abdomen 32: third upper flange
33 : 제3하부플랜지부 40 : 포스트텐션 강선부재33: third lower flange portion 40: post tension steel wire member
40a : 직선강선부 40b : 곡선강선부40a: straight steel wire portion 40b: curved steel wire portion
41 : 제1쉬스관 42 : 제2쉬스관41: first sheath building 42: second sheath building
43 : 제3쉬스관43: Third Sheath Hall
본 발명의 실시를 위한 최선의 형태는Best Mode for Carrying Out the Invention
내부에 프리텐션 강선부재가 삽입되어 프리텐션이 적용된 제1거더 세그먼트부재; 상기 제1거더 세그먼트부재의 길이방향 일단부에 배치되는 제2거더 세그먼트부재; 상기 제1거더 세그먼트부재의 길이방향 타단부에 배치되는 제3거더 세그먼트부재; 및 상기 제2거더 세그먼트부재, 상기 제1거더 세그먼트부재, 상기 제3거더 세그먼트부재의 길이방향으로 관통되어 포스트텐션을 적용시키는 포스트텐션 강선부재를 포함하는 것을 특징으로 하는 프리스트레스 콘크리트 거더로 제공된다.A first girder segment member to which a pretension steel wire member is inserted and to which pretension is applied; A second girder segment member disposed at one end portion in the longitudinal direction of the first girder segment member; A third girder segment member disposed at the other longitudinal end of the first girder segment member; And a post tension steel wire member penetrating in the longitudinal direction of the second girder segment member, the first girder segment member, and the third girder segment member to apply post tension.
본 발명을 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다. 여기서, 반복되는 설명, 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 기능, 및 구성에 대한 상세한 설명은 생략한다. 본 발명의 실시형태는 당 업계에서 평균적인 지식을 가진 자에게 본 발명을 보다 완전하게 설명하기 위해서 제공되는 것이다. 따라서, 도면에서의 요소들의 형상 및 크기 등은 보다 명확한 설명을 위해 과장될 수 있다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Here, the repeated description, well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention, and detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more completely describe the present invention to those skilled in the art. Accordingly, the shape and size of elements in the drawings may be exaggerated for clarity.
도 1은 본 발명에 따른 프리스트레스 콘크리트 거더의 일 실시예를 도시한 사시도이고, 도 2는 본 발명에 따른 프리스트레스 콘크리트 거더의 일 실시예를 도시한 측면도이며, 도 3은 본 발명에 따른 프리스트레스 콘크리트 거더의 일 실시예를 도시한 평단면도이고, 도 4는 본 발명에 따른 프리스트레스 콘크리트 거더의 일 실시예를 도시한 정면도이며, 도 5는 도 3의 A-A' 단면도이다.1 is a perspective view showing an embodiment of a prestressed concrete girder according to the present invention, Figure 2 is a side view showing an embodiment of a prestressed concrete girder according to the present invention, Figure 3 is a prestressed concrete girder according to the present invention 4 is a cross-sectional view showing one embodiment of, Figure 4 is a front view showing an embodiment of a prestressed concrete girder according to the present invention, Figure 5 is a cross-sectional view AA 'of FIG.
본 발명은 프리스트레스 콘크리트 거더에 관한 것이고, 도 1 내지 도 5를 참고하면, 내부에 프리텐션 강선부재(10a)가 삽입되어 프리텐션이 적용된 제1거더 세그먼트부재(10)를 포함한다.The present invention relates to a prestressed concrete girder, and referring to FIGS. 1 to 5, a pretension steel wire member 10a is inserted therein to include a first girder segment member 10 to which pretension is applied.
상기 제1거더 세그먼트부재(10)는 길이 방향의 양 단부에 각각 제2거더 세그먼트부재(20)와 제3거더 세그먼트부재(30)가 배치되고 서로 포스트텐션 강선부재(40)로 연결되어 하나의 거더를 형성한다.The first girder segment member 10 has a second girder segment member 20 and a third girder segment member 30 disposed at both ends in the longitudinal direction, respectively, and are connected to each other by a post tension steel wire member 40. Form a girder.
상기 프리텐션 강선부재(10a)와 상기 포스트텐션 강선부재(40)는 PC강선 또는 PC강봉일 수 있고 프리스트레스를 적용하는 어떠한 것도 사용이 가능함을 밝혀둔다.Note that the pretensioned wire member 10a and the post-tensioned wire member 40 may be a PC steel wire or a PC steel rod, and any one applying prestress may be used.
상기 제1거더 세그먼트부재(10)는 상기 제2거더 세그먼트부재(20)와 상기 제3거더 세그먼트부재(30)의 사이에 중앙에 배치되는 것이고, 프리텐션이 적용되어 제작된 것이다.The first girder segment member 10 is disposed in the center between the second girder segment member 20 and the third girder segment member 30, and is manufactured by applying pretension.
상기 제1거더 세그먼트부재(10)는, 거푸집 내 프리텐션 강선부재(10a)에 인장력을 주어 긴장해 놓은 채 콘크리트를 타설하고 콘크리트가 경화한 후에 프리텐션 강선부재(10a)의 인장력을 서서히 풀어 제작되며, 상기 제1거더 세그먼트부재(10)는 길이방향으로 관통된 제1강선 통과구멍이 구비되도록 제작된다. The first girder segment member 10 is made by placing concrete while giving tension to the pretensioned steel wire member 10a in the formwork and slowly unwinding the tensile force of the pretensioned steel wire member 10a after the concrete is hardened. The first girder segment member 10 is manufactured to have a first steel wire through-hole penetrated in the longitudinal direction.
즉, 상기 제1거더 세그먼트부재(10)는, 거푸집 내 프리텐션 강선부재(10a)에 인장력을 주어 긴장해 놓고, 상기 포스트텐션 강선부재(40)가 통과될 수 있는 제1쉬스관(41)을 매립하여 제작된다.That is, the first girder segment member 10 is tensioned by applying a tension to the pretensioned steel wire member 10a in the formwork, and the first sheath pipe 41 through which the post-tensioned steel wire member 40 can pass. It is produced by reclaiming.
상기 제1거더 세그먼트부재(10)는, 길이 방향으로 제1쉬스관(41)이 매립되어 양 단부로 관통된 제1강선 통과구멍을 형성하는 것을 일 예로 한다.For example, the first girder segment member 10 may include a first steel wire through-hole formed by filling the first sheath tube 41 in the longitudinal direction and penetrating to both ends thereof.
또한, 상기 제1거더 세그먼트부재(10)는, 제1복부(11)의 상부 및 하부에 각각 가로로 배치되는 제1상부플랜지부(12)와 제1하부플랜지부(13)가 구비되는 형상을 가진다.In addition, the first girder segment member 10 has a shape in which the first upper flange portion 12 and the first lower flange portion 13 are disposed horizontally on the upper and lower portions of the first abdomen 11, respectively. Has
상기 제2거더 세그먼트부재(20)는, 상기 제1강선 통과구멍과 연통되는 제2강선통과구멍이 구비되며, 거푸집 내에 상기 제1쉬스관(41)과 연통될 수 있는 위치로 제2쉬스관(42)을 매립하여 제작된다.The second girder segment member 20 is provided with a second steel wire passage hole communicating with the first steel wire passage hole, and the second sheath tube in a position where the second girder segment member can communicate with the first sheath tube 41. It is produced by embedding 42.
상기 제2거더 세그먼트부재(20)는 상기 제1쉬스관(41)과 연통되는 제2쉬스관(42)이 길이방향으로 배치되어 상기 포스트텐션 강선부재(40)가 통과되도록 양 단부로 관통된 제2강선 통과구멍을 형성하는 것을 일 예로 한다.The second girder segment member 20 has a second sheath tube 42 communicating with the first sheath tube 41 in a longitudinal direction and is penetrated at both ends so that the post tension steel wire member 40 passes. For example, forming a second steel wire through hole.
또한, 상기 제2거더 세그먼트부재(20)는, 제2복부(21)의 상부 및 하부에 각각 가로로 배치되는 제2상부플랜지부(22)와 제2하부플랜지부(23)가 구비되는 형상을 가진다.In addition, the second girder segment member 20 has a shape in which the second upper flange portion 22 and the second lower flange portion 23 are disposed horizontally on the upper and lower portions of the second abdomen 21, respectively. Has
상기 제3거더 세그먼트부재(30)는, 상기 제1강선 통과구멍과 연통되는 제3강선통과구멍이 구비되며, 거푸집 내에 상기 제1쉬스관(41)과 연통될 수 있는 위치로 제3쉬스관(43)을 매립하여 제작된다.The third girder segment member 30 is provided with a third steel wire passage hole communicating with the first steel wire passage hole, and a third sheath tube in a position that can communicate with the first sheath tube 41 in the formwork. It is produced by embedding 43.
상기 제3거더 세그먼트부재(30)는 상기 제1쉬스관(41)과 연통되는 제3쉬스관(43)이 길이방향으로 배치되어 상기 포스트텐션 강선부재(40)가 통과되도록 양 단부로 관통된 제3강선 통과구멍을 형성하는 것을 일 예로 한다.The third girder segment member 30 has a third sheath tube 43 communicating with the first sheath tube 41 in a longitudinal direction and is penetrated at both ends so that the post tension steel wire member 40 passes. As an example, the third steel wire through hole is formed.
또한, 상기 제3거더 세그먼트부재(30)는, 제3복부(31)의 상부 및 하부에 각각 가로로 배치되는 제3상부플랜지부(32)와 제3하부플랜지부(33)가 구비되는 형상을 가진다.In addition, the third girder segment member 30 has a shape in which the third upper flange portion 32 and the third lower flange portion 33 are disposed horizontally on the upper and lower portions of the third abdomen 31, respectively. Has
상기 프리텐션 강선부재(10a)는 상기 제2강선 통과구멍, 상기 제1강선 통과구멍, 상기 제3강선 통과구멍을 관통하여 상기 제2거더 세그먼트부재(20)와 상기 제3거더 세그먼트부재(30)의 단부 측에 양단부가 정착구로 정착되어 길이방향으로 배치된 상기 제2거더 세그먼트부재(20), 상기 제1거더 세그먼트부재(10), 상기 제3거더 세그먼트부재(30)에 프리스트레스를 가하게 된다.The pretensioned steel wire member 10a penetrates through the second steel wire through hole, the first steel wire through hole, and the third steel wire through hole to pass through the second girder segment member 20 and the third girder segment member 30. Pre-stress is applied to the second girder segment member 20, the first girder segment member 10, and the third girder segment member 30, both ends of which are fixed to the end of the bottom side and disposed in the longitudinal direction. .
일반적으로 포스트텐션을 하면 크리티컬 포인트가 포스트텐션에 의해 거더의 상단(주로 중앙상단)에 발생하는 인장력이 인장강도를 넘어 더 이상 인장을 못 가하게 된다. In general, post-tensioning causes the critical points to become tensioned at the top of the girder (usually at the top of the center) by the post-tension, which exceeds the tensile strength and no longer tensions.
본 발명은 프리스트레스가 적용된 상기 제1거더 세그먼트부재(10)를 가운데 배치하고, 양 단부에 각각 배치되는 상기 제2거더 세그먼트부재(20)와 상기 제3거더 세그먼트부재(30)로 포스트텐션을 가함으로써 프리스트레스에 의해 거더 중앙 상단을 인장이 아니라 압축으로 만든 상태에서 전체에 보다 큰 포스트텐션을 가해 보다 효율적으로 포스트텐션을 도입할 수 있어 거더의 길이와 중량을 줄일 수 있고, 60m이상의 장경간을 가지는 거더를 실질적으로 제작 가능하게 하고, 장경간 거더의 안정성을 크게 향상시킨 것이다.The present invention arranges the first girder segment member 10 to which prestress is applied, and post-tensions the second girder segment member 20 and the third girder segment member 30 respectively disposed at both ends. By applying prestressing, the upper part of the girder center is not compressed but compressed, so that the larger post tension can be applied to the whole, so that the post tension can be introduced more efficiently, reducing the length and weight of the girder and having a long span of more than 60m. The girder can be manufactured substantially, and the stability of the long span girders is greatly improved.
상기 프리텐션 강선부재(10a)는 상기 제1복부(11)에서 직선형태로 배치되고, 상, 하 방향으로 이격되게 복수로 구비되는 것이 바람직하다.The pretensioned steel wire member 10a may be disposed in a straight line shape in the first abdomen 11 and provided in plural to be spaced apart in the up and down directions.
상기 포스트텐션 강선부재(40)는 상기 제2하부플랜지부(23), 상기 제1하부플랜지부(13), 상기 제3하부플랜지부(33)를 관통하여 직선형태로 배치되며, 상기 프리텐션 강선부재(10a)는 가로 방향으로 이격되게 복수로 구비되는 것이 바람직하다.The post tension steel wire member 40 is disposed in a straight line through the second lower flange portion 23, the first lower flange portion 13, and the third lower flange portion 33, and the pretension. Steel wire member (10a) is preferably provided in plurality in the horizontal direction spaced apart.
본 발명에서, 상기 제1쉬스관(41)과 상기 제1쉬스관(41)의 양 단부에 각각연결되는 상기 제2쉬스관(42)과 상기 제3쉬스관(43)은 일직선상에 배치되고, 상기 포스트텐션 강선부재(40)는, 상기 제2쉬스관(42)과 상기 제1쉬스관(41), 상기 제3쉬스관(43)을 관통하여 일직선으로 배치되고 양 단부가 정착구에 의해 정착되어 서로 길이방향으로 연결되어 일직선상의 일체형 거더를 형성하는 상기 제1거더 세그먼트부재(10), 상기 제2거더 세그먼트부재(20), 상기 제3거더 세그먼트부재(30)에 프리스트레스를 가하게 되는 것이다.In the present invention, the second sheath tube 42 and the third sheath tube 43 connected to both ends of the first sheath tube 41 and the first sheath tube 41 are disposed in a straight line. The post tension steel wire member 40 is disposed in a straight line through the second sheath pipe 42, the first sheath pipe 41, and the third sheath pipe 43, and both ends of the post tension steel wire member 40 are disposed in the fixing tool. Prestressing is applied to the first girder segment member 10, the second girder segment member 20, and the third girder segment member 30 which are fixed to each other and are connected to each other in a longitudinal direction to form a straight integral girder. will be.
상기 프리텐션 강선부재(10a)와 상기 포스트텐션 강선부재(40)는, 복부 및 하부 플랜지부에 일직선상으로 배치되어 설치에 있어 그 작업성이 매우 증진될 수 있어 효율적이고 경제적인 거더 제작이 가능하게 될 뿐만 아니라, PSC 거더의 최소피복두께 및 최소간격을 규정에 맞추어 배치할 수 있어 실제 PSC 거더 제작에 있어 필요사항을 충족시킬 수 있게 된다. 또한, 상기 PSC 거더의 양 단부에 있어서도 프리스트레스의 집중문제를 해결할 수 있어 PPS 거더의 단부 균열 문제를 해결할 수 있으므로 PSC 거더의 사용성이 개선될 수 있을 뿐만 아니라 특히 장지간의 PSC 거더를 제작할 경우에 있어 구조적으로 문제되는 상기 프리텐션 강선부재(10a) 및 상기 포스트텐션 강선부재(40)의 배치 및 프리스트레스의 릴랙세이션에 의한 문제점을 해결할 수 있다. The pretensioned steel wire member 10a and the post-tensioned steel wire member 40 are arranged in a straight line on the abdomen and the lower flange portion, the workability of the installation can be greatly enhanced, so that an efficient and economical girder can be manufactured. In addition, the minimum coating thickness and minimum spacing of the PSC girder can be arranged in accordance with the regulations to meet the requirements for the actual production of the PSC girder. In addition, the problem of concentration of prestress can be solved at both ends of the PSC girder, so that the end cracking problem of the PPS girder can be solved, so that the usability of the PSC girder can be improved, and in particular, when manufacturing a long span PSC girder, Problems caused by the arrangement of the pretensioned wire member 10a and the post-tensioned wire member 40 and relaxation of the prestress may be solved.
상기 프리텐션 강선부재(10a)와 상기 포스트텐션 강선부재(40)를 직선형태로 배치하기 위해 상기 제1거더 세그먼트부재(10)의 선단부측 전면은 상기 제2거더 세그먼트부재(20)의 종단부측 후면과 일치되는 형상을 가지며, 상기 제1거더 세그먼트부재(10)의 종단부측 후면은 상기 제3거더 세그먼트부재(30)의 선단부측 전면과 일치되는 형상을 가진다.In order to arrange the pretensioned steel wire member 10a and the post-tensioned steel wire member 40 in a straight line shape, the front end side of the first girder segment member 10 is a terminal end side of the second girder segment member 20. It has a shape consistent with the rear surface, the rear end portion side of the first girder segment member 10 has a shape coinciding with the front end portion side of the third girder segment member 30.
또한, 상기 제2거더 세그먼트부재(20)의 상기 제2하부플랜지부(23)는, 종단부 측에서 선단부측으로 갈수록 점차 높이가 높아지는 형상을 가진다.In addition, the second lower flange portion 23 of the second girder segment member 20 has a shape that gradually increases in height from the end portion side to the tip portion side.
상기 제2거더 세그먼트부재(20)의 상기 제2하부플랜지부(23)는 하부면이 상기 제1거더 세그먼트부재(10)의 상기 제1하부플랜지부(13)의 하부면과 일치된 상태에서 상부면이 종단부 측에서 선단부측으로 갈수록 점차 높이가 높아지는 형상을 가지는 것이다. The second lower flange portion 23 of the second girder segment member 20 has a lower surface coincided with a lower surface of the first lower flange portion 13 of the first girder segment member 10. The upper surface has a shape in which the height gradually increases from the end side to the tip side.
또한, 상기 제3거더 세그먼트부재(30)의 상기 제3하부플랜지부(33)는 상기 제1하부플랜지부(13)는, 종단부 측에서 선단부측으로 갈수록 점차 높이가 높아지는 형상을 가진다.In addition, the third lower flange portion 33 of the third girder segment member 30 has a shape in which the first lower flange portion 13 gradually increases in height from the end side to the front end side.
상기 제3거더 세그먼트부재(30)의 상기 제3하부플랜지부(33)는 하부면이 상기 제1거더 세그먼트부재(10)의 상기 제1하부플랜지부(13)의 하부면과 일치된 상태에서 상부면이 종단부 측에서 선단부측으로 갈수록 점차 높이가 높아지는 형상을 가지는 것이다. The third lower flange portion 33 of the third girder segment member 30 has a lower surface coincided with a lower surface of the first lower flange portion 13 of the first girder segment member 10. The upper surface has a shape in which the height gradually increases from the end side to the tip side.
이는 거더의 중심축을 변화시켜 상기 프리텐션 강선부재(10a)와 상기 포스트텐션 강선부재(40)를 직선형태로 안정적으로 배치할 수 있는 것이다. This is to change the central axis of the girder to stably arrange the pretensioned wire member (10a) and the post-tensioned wire member 40 in a straight form.
상기 제2하부플랜지부(23)의 선단부측 높이와 상기 제3하부플랜지부(33)의 종단부측 높이는 상기 제1거더 세그먼트부재(10) 높이의 1/2 보다 큰 높이로 형성되는 것이 바람직하다. The height of the tip end side of the second lower flange portion 23 and the height of the end portion side of the third lower flange portion 33 may be formed to have a height greater than 1/2 of the height of the first girder segment member 10. .
또한, 상기 제1하부플랜지부(13)는, 폭이 중앙에서 가장 좁고 양단부측으로 갈수록 점차 폭이 커지는 형상으로 형성되고, 평면상에서 곡선형태로 형성되는 것이 바람직하다. 즉, 상기 제1하부플랜지부(13)는 길이전체에서 동일한 높이를 가지도록 형성되고, 양 측면이 곡면으로 형성되어 제작시 사용되는 콘크리트 재료를 사용을 최소화할 수 있는 것이다. 또한, 거더의 전체 무게를 줄여 단면 효율성을 향상시키는 것이다. In addition, the first lower flange portion 13 is formed in a shape where the width is narrowest at the center and gradually widens toward both end portions, and is preferably formed in a curved shape on a plane. That is, the first lower flange portion 13 is formed to have the same height throughout the length, both sides are formed to be curved to minimize the use of the concrete material used in manufacturing. In addition, the overall weight of the girder is reduced to improve the section efficiency.
또한, 상기 제2하부플랜지부(23)와 상기 제3하부플랜지부(33)는 단부측으로 갈수록 높이가 높게 형성되어 일직선상으로 배치되는 상기 프리텐션 강선부재(10a)와 상기 포스트텐션 강선부재(40)에 의한 프리스트레스를 지지할 수 있는 강성을 가지도록 함과 동시에 제작시 사용되는 콘크리트 재료를 사용을 최소화할 수 있는 것이다.In addition, the second lower flange portion 23 and the third lower flange portion 33 are formed with a height toward the end side of the pre-tensioned steel wire member 10a and the post-tensioned steel wire member ( In addition to having a rigidity to support the prestress by 40) it is possible to minimize the use of the concrete material used in the production.
한편, 도 6은 본 발명에 따른 프리스트레스 콘크리트 거더의 다른 실시예를 도시한 측면도이고, 도 7은 도 6의 프리스트레스 콘크리트 거더의 정면도로서, 도 6 및 도 7을 참고하면 상기 포스트텐션 강선부재(40)는 상기 제2하부플랜지부(23) 상기 제1하부플랜지부(13), 상기 제3하부플랜지부(33)를 관통하여 직선형태로 배치되는 직선강선부(40a); 및 상기 제1하부플랜지부(13)를 직선형태로 관통하고, 일단부가 상기 제2하부플랜지부(23)에서 상부 측으로 곡선형태로 휘어져 상기 직선강선부(40a)의 상부 측에 정착되고, 타단부가 상기 제3하부플랜지부(33)에서 상부 측으로 곡선형태로 휘어져 거쳐 상기 직선강선부(40a)의 상부 측에 정착되는 곡선강선부(40b)를 포함할 수도 있다.On the other hand, Figure 6 is a side view showing another embodiment of the prestressed concrete girder according to the present invention, Figure 7 is a front view of the prestressed concrete girder of Figure 6, referring to Figures 6 and 7 the post-tension wire member 40 ) Is a straight steel wire portion 40a disposed in a straight line through the second lower flange portion 23, the first lower flange portion 13, and the third lower flange portion 33; And a first penetrating through the first lower flange portion 13 in a straight line shape, one end of which is curved in a curved shape from the second lower flange portion 23 to an upper side, and is fixed to the upper side of the straight steel wire portion 40a. An end portion may include a curved steel wire portion 40b that is curved in an upper side from the third lower flange portion 33 and is fixed to an upper side of the straight steel wire portion 40a.
또한, 도 8 및 도 9를 참고하면, 상기 곡선강선부(40b)는, 일단부가 상기 제2하부플랜지부(23)를 거쳐 상기 제2복부(21)로 곡선으로 연장되어 상기 제2복부(21)에 정착되고, 타단부가 상기 제2하부플랜지부(23)를 거쳐 상기 제3복부(31)로 곡선으로 연장되어 상기 제3복부(31)에 정착될 수도 있다.8 and 9, one end portion of the curved steel wire portion 40b extends in a curved shape to the second abdomen 21 through the second lower flange portion 23 and the second abdomen ( 21 may be fixed, and the other end may be curved to extend to the third abdomen 31 via the second lower flange portion 23 to be fixed to the third abdomen 31.
또한, 도 10 및 도 11을 참고하면, 상기 제2하부플랜지부(23)의 상부면은 양 측단부에서 중앙으로 점차 높아지도록 경사지게 형성되어 플랜지와 복부의 연결부분에 대한 강성을 크게 보강하는 형상을 가질 수도 있고, 이외에도 공지의 다양한 형상으로 변형실시 가능함을 밝혀둔다. In addition, referring to Figures 10 and 11, the upper surface of the second lower flange portion 23 is formed to be inclined so as to gradually increase from both side end portion to the center shape to greatly reinforce the rigidity for the connecting portion of the flange and the abdomen It may have a, in addition to that it is possible to deform in a variety of known shapes.
본 발명은 포스트텐션 거더와 프리텐션 거더의 장점을 모두 가져 동일한 형상과 치수의 프리캐스트 부재를 대량으로 제조 가능하며, 단면 효율이 높을 뿐 아니라 현장에서 쉽게 프리스트레스를 도입할 수 있고, 프리캐스트 PC부재의 결합과 조립에 편리하게 이용가능하며 PC강재의 재긴장도 가능하며 캠버관리가 용이하다.The present invention has the advantages of both post-tension girders and pre-tension girders to produce a large number of precast members of the same shape and dimensions, high cross-sectional efficiency, easy to introduce prestress in the field, precast PC members It can be conveniently used for assembling and assembling, re-tensioning of PC steel, and easy to manage camber.
본 발명은 기존 포스트텐션 거더와 프리텐션 거더 대비 단면을 슬림화할 수 있으며 프리텐션 방식을 일부 적용하여 재료 비용을 감소시키고, 재료의 효율적인 사용이 가능하게 한다.The present invention can reduce the cross-section compared to the existing post-tension girders and pre-tension girders, by applying a part of the pre-tension method to reduce the material cost, and enables the efficient use of the material.
본 발명은 중앙경간에 전단면 압축상태(거더 상부에 좀더 많은 압축력 도입)의 프리텐션부재를 도입함으로써 포스트텐션 시 발생되는 거더상부 인장력을 제어하여 프리스트레싱력의 도입을 극대화할 수 있어 중경간부재의 단면효율을 크게 향상시키며 중경간부재의 제조 비용을 절감하고, 저형고, 저비용의 60m 이상의 길이를 가지는 장경간의 대형부재의 제작을 실질적으로 가능하게 한다.The present invention can control the tension of the upper part of the girder generated during post-tension by introducing a pre-tension member in the shear state compression (introducing more compression force on the girder) in the center span to maximize the introduction of the prestressing force to the cross section of the mid span member. It greatly improves the efficiency and reduces the manufacturing cost of the middle span member, and makes it possible to manufacture a large span large member having a length of 60m or more with a low profile and low cost.
이와 같은 본 발명의 기본적인 기술적 사상의 범주 내에서, 당업계의 통상의 지식을 가진 자에게 있어서는 다른 많은 변형이 가능함은 물론이고, 본 발명의 권리범위는 첨부한 특허청구 범위에 기초하여 해석되어야 할 것이다.Within the scope of the basic technical idea of the present invention, many other modifications are possible to those skilled in the art, and the scope of the present invention should be interpreted based on the appended claims. will be.

Claims (10)

  1. 내부에 프리텐션 강선부재가 삽입되어 프리텐션이 적용된 제1거더 세그먼트부재;A first girder segment member to which a pretension steel wire member is inserted and to which pretension is applied;
    상기 제1거더 세그먼트부재의 길이방향 일단부에 배치되는 제2거더 세그먼트부재; A second girder segment member disposed at one end portion in the longitudinal direction of the first girder segment member;
    상기 제1거더 세그먼트부재의 길이방향 타단부에 배치되는 제3거더 세그먼트부재; 및 A third girder segment member disposed at the other longitudinal end of the first girder segment member; And
    상기 제2거더 세그먼트부재, 상기 제1거더 세그먼트부재, 상기 제3거더 세그먼트부재의 길이방향으로 관통되어 포스트텐션을 적용시키는 포스트텐션 강선부재를 포함하는 것을 특징으로 하는 프리스트레스 콘크리트 거더.And a post-tensioned steel wire member penetrating in the longitudinal direction of the second girder segment member, the first girder segment member, and the third girder segment member to apply post tension.
  2. 청구항 1에 있어서, The method according to claim 1,
    상기 제1거더 세그먼트부재는 길이방향으로 관통된 제1강선 통과구멍이 구비되고,The first girder segment member is provided with a first steel wire through hole penetrated in the longitudinal direction,
    상기 제2거더 세그먼트부재는, 상기 제1강선 통과구멍과 연통되는 제2강선통과구멍이 구비되며,The second girder segment member is provided with a second steel wire through hole communicating with the first steel wire through hole,
    상기 제3거더 세그먼트부재는, 상기 제1강선 통과구멍과 연통되는 제3강선통과구멍이 구비되고,The third girder segment member is provided with a third steel wire passage hole in communication with the first steel wire passage hole,
    상기 프리텐션 강선부재는 상기 제2강선 통과구멍, 상기 제1강선 통과구멍, 상기 제3강선 통과구멍을 관통하여 상기 제2거더 세그먼트부재와 상기 제3거더 세그먼트부재의 단부 측에 양단부가 정착구로 정착되는 것을 특징으로 하는 프리스트레스 콘크리트 거더.The pretensioned steel wire member passes through the second steel wire through hole, the first steel wire through hole, and the third steel wire through hole, and both ends of the pretensioned steel wire member are fixed to the end side of the second girder segment member and the third girder segment member. A prestressed concrete girder, characterized in that it is fixed.
  3. 청구항 1에 있어서, The method according to claim 1,
    상기 제1거더 세그먼트부재는, 제1복부의 상부 및 하부에 각각 가로로 배치되는 제1상부플랜지부와 제1하부플랜지부가 구비되는 형상을 가지며,The first girder segment member has a shape in which a first upper flange portion and a first lower flange portion are disposed horizontally on upper and lower portions of the first abdomen, respectively.
    상기 제2거더 세그먼트부재는, 제2복부의 상부 및 하부에 각각 가로로 배치되는 제2상부플랜지부와 제2하부플랜지부가 구비되는 형상을 가지고, The second girder segment member has a shape in which a second upper flange portion and a second lower flange portion are disposed horizontally on the upper and lower portions of the second abdomen, respectively.
    상기 제3거더 세그먼트부재는, 제3복부의 상부 및 하부에 각각 가로로 배치되는 제3상부플랜지부와 제3하부플랜지부가 구비되는 형상을 가지며, The third girder segment member has a shape in which a third upper flange portion and a third lower flange portion are disposed horizontally on the upper and lower portions of the third abdomen, respectively.
    상기 프리텐션 강선부재는 상기 제1복부에서 직선형태로 배치되고,The pretensioned steel wire member is disposed in a straight form on the first abdomen,
    상기 포스트텐션 강선부재는 상기 제2하부플랜지부, 상기 제1하부플랜지부, 상기 제3하부플랜지부를 관통하여 직선형태로 배치되는 것을 특징으로 하는 프리스트레스 콘크리트 거더.The post tension steel wire member is prestressed concrete girder, characterized in that arranged in a straight line through the second lower flange portion, the first lower flange portion, the third lower flange portion.
  4. 청구항 3에 있어서, The method according to claim 3,
    상기 프리텐션 강선부재는 상, 하 방향으로 이격되게 복수로 구비되고, The pretension steel member is provided with a plurality of spaced apart in the up, down direction,
    상기 포스트텐션 강선부재는 가로 방향으로 이격되게 복수로 구비되는 것을 특징으로 하는 프리스트레스 콘크리트 거더.The post-tensioned steel wire member is prestressed concrete girder, characterized in that provided in plurality in the horizontal direction.
  5. 청구항 3에 있어서, The method according to claim 3,
    상기 제1거더 세그먼트부재의 선단부측 전면은 상기 제2거더 세그먼트부재(20)의 종단부측 후면과 일치되는 형상을 가지며, 상기 제1거더 세그먼트부재의 종단부측 후면은 상기 제3거더 세그먼트부재의 선단부측 전면과 일치되는 형상을 가지고, The front end side of the first girder segment member has a shape that is consistent with the rear end side of the second girder segment member 20, and the rear end side of the first girder segment member is the front end of the third girder segment member. Has a shape that matches the front side,
    상기 제2하부플랜지부는, 종단부 측에서 선단부측으로 갈수록 점차 높이가 높아지는 형상을 가지며, The second lower flange portion has a shape that gradually increases in height from the end portion side to the tip portion side,
    상기 제3하부플랜지부는 상기 제1하부플랜지부는, 종단부 측에서 선단부측으로 갈수록 점차 높이가 높아지는 형상을 가지는 것을 특징으로 하는 프리스트레스 콘크리트 거더.The third lower flange portion, the first lower flange portion, prestressed concrete girder, characterized in that the height gradually increases from the end portion side toward the tip portion side.
  6. 청구항 3에 있어서, The method according to claim 3,
    상기 제2거더 세그먼트부재의 상기 제2하부플랜지부는 하부면이 상기 제1거더 세그먼트부재의 상기 제1하부플랜지부의 하부면과 일치된 상태에서 상부면이 종단부 측에서 선단부측으로 갈수록 점차 높이가 높아지는 형상을 가지며, The second lower flange portion of the second girder segment member is gradually increased in height from the end side to the distal end side with an upper surface thereof in a state where a lower surface coincides with a lower surface of the first lower flange portion of the first girder segment member. Has an elevated shape,
    상기 제3하부플랜지부는 하부면이 상기 제1거더 세그먼트부재의 상기 제1하부플랜지부의 하부면과 일치된 상태에서 상부면이 종단부 측에서 선단부측으로 갈수록 점차 높이가 높아지는 형상을 가지는 것을 특징으로 하는 프리스트레스 콘크리트 거더.The third lower flange portion has a shape in which the upper surface gradually increases in height from the end side to the distal end side in a state where a lower surface coincides with a lower surface of the first lower flange portion of the first girder segment member. Prestressed concrete girder.
  7. 청구항 5 또는 청구항 6에 있어서, The method according to claim 5 or 6,
    상기 제2하부플랜지부의 선단부측 높이와 상기 제3하부플랜지부의 종단부측 높이는 상기 제1거더 세그먼트부재 높이의 1/2 보다 큰 높이로 형성되는 것을 특징으로 하는 프리스트레스 콘크리트 거더.The height of the distal end side of the second lower flange portion and the height of the distal end side of the third lower flange portion are formed to have a height greater than 1/2 of the height of the first girder segment member.
  8. 청구항 3에 있어서, The method according to claim 3,
    상기 제1하부플랜지부는, 폭이 중앙에서 가장 좁고 양단부측으로 갈수록 점차 폭이 커지는 형상으로 형성되고, 평면상에서 곡선형태로 형성되는 것을 특징으로 하는 프리스트레스 콘크리트 거더.The first lower flange portion, the width is narrowest in the center and the prestressed concrete girder, characterized in that the width is gradually increased toward the both ends side is formed in a curved shape on the plane.
  9. 청구항 3에 있어서, The method according to claim 3,
    상기 포스트텐션 강선부재는 상기 제2하부플랜지부 상기 제1하부플랜지부, 상기 제3하부플랜지부를 관통하여 직선형태로 배치되는 직선강선부; 및 The post tension steel wire member may include a straight wire portion disposed in a straight line through the second lower flange portion, the first lower flange portion, and the third lower flange portion; And
    상기 제1하부플랜지부를 직선형태로 관통하고, 일단부가 상기 제2하부플랜지부에서 상부 측으로 곡선형태로 휘어져 상기 직선강선부의 상부 측에 정착되고, 타단부가 상기 제3하부플랜지부에서 상부 측으로 곡선형태로 휘어져 거쳐 상기 직선강선부의 상부 측에 정착되는 곡선강선부를 포함하는 것을 특징으로 하는 프리스트레스 콘크리트 거더.The first lower flange portion penetrates in a straight line shape, and one end thereof is curved in an upper side from the second lower flange portion to be fixed to the upper side of the straight steel wire portion, and the other end thereof is moved from the third lower flange portion to the upper side. Prestressed concrete girder comprising a curved steel wire portion bent in a curved shape and fixed to the upper side of the straight steel wire portion.
  10. 청구항 9에 있어서, The method according to claim 9,
    상기 곡선강선부는, 일단부가 상기 제2하부플랜지부를 거쳐 상기 제2복부로 곡선으로 연장되어 상기 제2복부에 정착되고, 타단부가 상기 제2하부플랜지부를 거쳐 상기 제3복부로 곡선으로 연장되어 상기 제3복부에 정착되는 것을 특징으로 하는 프리스트레스 콘크리트 거더.The curved steel wire portion has one end extending in a curve to the second abdomen through the second lower flange part and fixed to the second abdomen, and the other end is curved into the third abdomen through the second lower flange part. Prestressed concrete girder, characterized in that extending to settle the third abdomen.
PCT/KR2016/005685 2015-06-08 2016-05-30 Prestressed concrete girder WO2016200083A1 (en)

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