KR100439470B1 - Beam for Bridge - Google Patents
Beam for Bridge Download PDFInfo
- Publication number
- KR100439470B1 KR100439470B1 KR10-2001-0072142A KR20010072142A KR100439470B1 KR 100439470 B1 KR100439470 B1 KR 100439470B1 KR 20010072142 A KR20010072142 A KR 20010072142A KR 100439470 B1 KR100439470 B1 KR 100439470B1
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- Prior art keywords
- compression
- composite beam
- bridges
- bridge
- tension
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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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
- 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
- E01D2101/285—Composite prestressed concrete-metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
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- Bridges Or Land Bridges (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
Abstract
본 발명은 교량의 상부구조에 가해지는 하중을 교각으로 보내는 빔의 압축 및 인장응력을 향상시키는 교량용 합성빔을 개시한다.The present invention discloses a composite beam for bridges that improves the compressive and tensile stresses of the beams that send the loads to the bridges to the superstructures of the bridges.
이러한 본 발명은 압축압력과 인장응력을 집중적으로 받는 부분을 금속으로 보강함과 아울러 상부와 하부에 중공부를 형성함으로써 압축 및 입장압력에 우수하고 제작비용이 저렴해지도록 하기 위하여, 내부에 철근이 배설되고 고강도 콘크리트를 그라우팅하여서 되며 압축부와 중간부 및 인장부로 되는 교량용 합성빔에 있어서, 압축부는 압축보강재로 보강되고, 인장부는 인장보강재로 보강되도록 하되, 상기 압축보강재와 인장보강재의 내측에 다수의 격벽을 형성하여 격벽과 격벽 사이에 중공부 형성되도록 하는 교량용 합성빔을 제안한다.In the present invention, the reinforcing bar is disposed in order to improve the compression and entry pressure and to lower the manufacturing cost by reinforcing the metal and the hollow part in the upper part and the lower part receiving the compressive pressure and the tensile stress intensively. And the composite beam for bridges, which are grouted with high-strength concrete, and the compression part, the intermediate part, and the tension part, wherein the compression part is reinforced with a compressive stiffener, and the tension part is reinforced with a tensile stiffener, We propose a composite beam for bridges that forms a bulkhead to form a hollow between the bulkhead and the bulkhead.
상기와 같은 본 발명은 압축부와 인장부의 표면적이 넓어져 상기 압축압력과 인장응력의 저항력이 우수해지며, 전체적인 보강이 아닌 부분적인 보강이 되도록 함으로써 제조비용이 저렴해지는 효과가 있고, 또한 압축압력과 인장응력에 의하여 압축부 및 인장부의 콘크리트에 균열이 발생된다 하여도, 상기 균열이 중공부 내에서 있을 뿐 교량용 합성빔 전체로 확산되지 않으므로, 교량의 안전도를 더욱 향상시키는 등의 유용한 효과가 있다.The present invention as described above has the surface area of the compression portion and the tension portion is wider, the resistance of the compression pressure and the tensile stress is excellent, the partial reinforcement instead of the overall reinforcement has the effect of lowering the manufacturing cost, and also the compression pressure Even if cracks are generated in the concrete of the compression part and the tension part due to excessive tensile stress, the cracks are present only in the hollow part and are not diffused to the entire composite beam for the bridge, and thus have a useful effect of further improving the safety of the bridge. have.
Description
본 발명은 교량용 합성빔에 관한 것으로, 특히 교량의 상부구조에 가해지는 하중을 교각으로 보내는 역할을 하는 빔의 압축 및 인장응력을 향상시키는 교량용 합성빔에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite beam for bridges and, more particularly, to a composite beam for bridges that improves the compression and tensile stress of beams that serve to transfer loads to the bridge's superstructure.
일반적으로 교량의 상부구조를 지지하며 상기 상부구조에 가해지는 하중을 교각으로 보내는 빔은 'I' 형상으로 그 재질은 일반 콘크리트재 또는 금속재로 이루어지는데, 교각과 교각 또는 교각과 교대의 상측에 상기 빔의 양측 선단을 각각 올려놓은 다음, 상부구조를 시공하기 위한 거푸집을 설치하되, 그 내부에 상기 빔이 위치하도록 한 후, 콘크리트를 타설하여 사용하는 것이다.In general, the beam supporting the upper structure of the bridge and sending the load applied to the upper structure to the pier is 'I' shape, the material is made of a general concrete or metal material, the pier and the pier or above the pier and the alternating After placing both ends of the beam, respectively, and then install the formwork for the construction of the superstructure, to place the beam therein, and then to cast concrete to use.
이러한 교량용 빔은 제작비용이 저렴하면서 압축 강도, 전단 강도, 휨 강도, 인장강도, 균열 저항 등과 같은 여러 조건에 강해야 하나, 혹한기, 혹서기, 우기, 건기 등을 두루 갖추고 있어 신장과 수축, 결빙과 해빙이 반복되는 우리 나라의 계절적 특성상, 일반 콘크리트 또는 금속재로 된 종래의 빔은 상기와 같은 여러 조건을 견디기에는 미흡하여 조기에 노후화 되어 내용연수가 짧고, 심한 경우에는 각종 강도와 저항의 약화로 내용연수를 채우지 못하고 붕괴되어 인명 및 재산에 막대한 피해를 줄 우려가 있어 왔다.These bridge beams must be inexpensive to manufacture and must be resistant to various conditions such as compressive strength, shear strength, flexural strength, tensile strength, and crack resistance, but are equipped with cold, cold, rainy, dry, and dry seasons. Due to the seasonal characteristics of our country, where the sea ice is repeated, conventional beams made of ordinary concrete or metal are insufficient to withstand the above conditions and are aging prematurely, and have a short service life. There has been a fear that the train could collapse without being filled, which would cause enormous damage to life and property.
따라서, 이러한 문제를 해결하기 위하여 본 출원인이 중간 부분을 협소하게 하며 내부를 중공으로 형성한 보강재의 내부 중공부에 고강도 콘크리트를 그라우팅하여서 되는 교량용 합성빔을 특허출원 제2000-6989호로 제안한 바 있다.Therefore, in order to solve this problem, the applicant has proposed as a patent application No. 2000-6989 for a composite beam for bridges, in which the middle part is narrowed and the high-strength concrete is grouted on the inner hollow portion of the reinforcement having the hollow portion formed therein. .
이러한 교량용 합성빔은 압축 강도, 전단 강도, 휨 강도, 인장 강도, 균열 저항 등이 우수하여 계적적인 기후변화가 심한 환경 조건에 강하므로, 교량의 안전에 신뢰를 할 수 있고 교량의 내용연수를 증가시키는 것은 물론, 제작비용이 저렴하고 시공기간의 단축을 가져올 수 있어 공사비를 절감하는 등의 잇점이 있다.The composite beam for bridges is excellent in compressive strength, shear strength, flexural strength, tensile strength, crack resistance, etc., so it is resistant to environmental conditions with severe climate change, so it can be trusted for the safety of bridges and the useful life of bridges. In addition to the increase, the production cost is low and the construction period can be shortened, thereby reducing the construction cost.
그러나 이러한 교량용 합성빔은 상측의 압축부와 하측의 인장부가 각각 압축압력과 인장응력에 약하여 상기 부분에 타설된 콘크리트가 균열되기 쉽고 이러한 균열이 교량용 합성빔의 전체로 확산되어 교량의 안전에 지장이 초래될 우려가 있으며, 압력이 "0"이 되므로 압력이 집중되는 부분에 비하여 상대적으로 보강정도를 덜하여도 되는 중간부분에 까지 보강재로 보강하므로 교량용 합성빔의 제조비용이 상승되는 문제가 있다.However, in the composite beam for bridges, the upper compression part and the lower tension part are weak in compressive pressure and tensile stress, respectively, so that the concrete placed on the part is easily cracked, and the crack is diffused to the entire composite beam for the bridge, thereby improving the safety of the bridge. There is a possibility that it may cause a problem, and since the pressure becomes "0", the manufacturing cost of the composite beam for bridges is increased because it is reinforced with the reinforcement to the middle part where the degree of reinforcement may be relatively lower than the pressure concentrated part. There is.
본 발명은 상기와 같은 종래의 문제점을 감안하여 압축압력과 인장응력을 집중적으로 받는 부분을 금속으로 보강함과 아울러 상부와 하부에 중공부를 형성함으로써 압축 및 입장압력에 우수하고 제작비용이 저렴한 교량용 합성빔을 제공함에 있다.The present invention, in view of the conventional problems as described above for reinforcing the portion receiving the compressive pressure and tensile stress with metal, and by forming a hollow portion in the upper and lower parts for the bridge excellent in compression and entry pressure and low production cost In providing a composite beam.
도 1은 본 발명에 의한 합성빔의 사시도.1 is a perspective view of a composite beam according to the present invention.
도 2는 본 발명에 의한 합성빔의 단면도.2 is a cross-sectional view of a composite beam according to the present invention.
도 3은 본 발명에 의한 교량용 합성빔의 설치상태도.3 is an installation state of the composite beam for bridges according to the present invention.
*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
10 : 교량용 합성빔 11 : 압축부 12 : 중간부DESCRIPTION OF SYMBOLS 10 Composite beam for bridges 11 Compression part 12 Middle part
13 : 인장부 14 : 압축보강재 15,18 : 격벽13 tension portion 14 compression reinforcing material 15,18 partition wall
16,19 : 중공부 17 : 인장보강재 20 : 거푸집16,19: hollow 17: tensile reinforcing material 20: formwork
21 : 철근 22 : 고강도 콘크리트 23 : PC강선21: rebar 22: high-strength concrete 23: PC steel wire
24 : 금속패널 25 : 교각 26 : 상부구조24 metal panel 25 pier 26 superstructure
27 : 상부콘크리트 28 : 하부콘크리트 29 : 지승27: upper concrete 28: lower concrete 29: jiseung
이러한 목적을 달성하기 위한 본 발명은 내부에 철근이 배설되고 고강도 콘크리트를 그라우팅하여서 되며 압축부와 중간부 및 인장부로 되는 교량용 합성빔에 있어서, 압축부는 압축보강재로 보강되고, 인장부는 인장보강재로 보강되도록 하되, 상기 압축보강재와 인장보강재의 내측에 다수의 격벽을 형성하여 격벽과 격벽 사이에 중공부 형성되도록 하는 교량용 합성빔을 제안한다.In order to achieve the above object, the present invention provides a composite beam for bridges in which reinforcing bars are disposed inside and grouting high-strength concrete, and the compression part, the intermediate part, and the tension part, wherein the compression part is reinforced with a compressive stiffener, and the tension part is a tensile stiffener. The present invention proposes a composite beam for a bridge to be reinforced, but to form a plurality of partitions inside the compression reinforcement and the tensile reinforcement to form a hollow portion between the partition and the partition.
이에 의하여 본 발명은 압축압력과 인장응력이 집중되는 부분만을 보강함으로써 압축 및 인장응력에 우수하고 제작비용이 저렴해 진다.As a result, the present invention is excellent in compression and tensile stress and the manufacturing cost is low by reinforcing only the portion where the compression pressure and tensile stress are concentrated.
상기와 같은 본 발명의 구성 및 작용을 첨부한 도면에 의거 상세히 설명하면 다음과 같다.Referring to the configuration and operation of the present invention as described above in detail as follows.
도 1은 본 발명에 의한 합성빔의 사시도이고, 도 2는 본 발명에 의한 합성빔의 단면도이며, 도 3은 본 발명에 의한 교량용 합성빔의 설치상태도이다.1 is a perspective view of a composite beam according to the present invention, FIG. 2 is a cross-sectional view of a composite beam according to the present invention, and FIG. 3 is a state diagram of a composite beam for bridges according to the present invention.
본 발명은 내측에 다수의 격벽(15,18)을 형성하여 상기 격벽(15,18)과 격벽(15,18) 사이에 중공부(16,19)가 구비되도록 한 압축보강재(14)와 인장보강재(17)를 각각 형성하고, 상기 압축보강재(14)와 인장보강재(17) 사이에 거푸집(20)을 설치하되, 상기 거푸집(20) 내측에 다수의 철근(21)을 배설한다음, 상기 압축보강재(14)와 인장보강재(17) 및 거푸집(20) 내측에 고강도 콘크리트(22)를 타설 양생하여 형성한다. 이와 같이 된 본 발명은 압축압력이 집중되는 압축부(11)의 상단과 인장응력이 집중되는 인장부(13)의 하단에 형성된 격벽(15,18)과 중공부(16,19)에 의하여 압력을 받는 부분의 표면적이 넓어지므로, 상기 압력을 강하게 지지하게 되는 것이다.According to the present invention, a plurality of partitions 15 and 18 are formed on the inner side thereof, and the compressive stiffener 14 and the tension that are provided between the partitions 15 and 18 and the partitions 15 and 18 are provided with hollow portions 16 and 19. Forming the reinforcing material (17), respectively, the formwork 20 is installed between the compression reinforcing material 14 and the tensile reinforcing material 17, the plurality of reinforcing bars 21 are disposed inside the formwork 20, Compression reinforcing material 14, tensile reinforcing material 17 and the form 20 is formed by pouring high-strength concrete (22) inside the formwork. According to the present invention, the pressure is increased by the partitions 15 and 18 and the hollow parts 16 and 19 formed at the upper end of the compression part 11 where the compression pressure is concentrated and the lower end of the tension part 13 where the tensile stress is concentrated. Since the surface area of the receiving portion becomes wider, it is to strongly support the pressure.
아울러 본 발명은 교량용 합성빔(10)의 압축 강도, 전단 강도, 휨강도, 인장 강도 등이 더욱 증강되도록 하기 위하여 상기 중공부(16,19)에 PC강선(23)을 삽입 설치하여 사용할 수 있으며, 또한 상기 중공부(16,19)에 PC강선(23) 대신 고강도 콘크리트 또는 강화 합성수지 등을 그라우팅하거나, PC강선(23)을 삽입 설치한 후 고강도 콘크리트 또는 강화 합성수지 등을 그라우팅하여 압축압력과 인장응력에 더욱 우수해지도록 할 수 있다.In addition, the present invention can be used by inserting the PC steel wire 23 in the hollow portion (16, 19) in order to further enhance the compressive strength, shear strength, bending strength, tensile strength, etc. of the composite beam for the bridge (10) In addition, grouting the high-strength concrete or reinforced synthetic resin, etc. instead of the PC steel wire 23 to the hollow portion (16, 19), or after inserting the PC steel wire 23 is installed by grouting the high-strength concrete or reinforced synthetic resin and the like compression pressure and tension It can be made better at stress.
또한, 본 발명은 중간부(12)의 보강을 위하여 상기 중간부(12)에 일정간격으로 금속패널(24)을 형성하되, 상단은 압축보강재(14)에 결합되고 하단은 인장보강재(17)에 결합되도록 하여 사용할 수 있다.In addition, the present invention forms a metal panel 24 at a predetermined interval in the intermediate portion 12 for the reinforcement of the intermediate portion 12, the upper end is coupled to the compressive stiffener 14 and the lower end of the tensile stiffener 17 It can be used to bind to.
이와 같이 하여서 된 본 발명은 첨부한 도면 도3으로 도시한 바와 같이 교량의 상부구조(26)에 설치되어 상기 상부구조(26)에 가해지는 하중을 지지함과 아울러 상기 하중을 교각(25)이나 교대로 보내는 역할을 하는 것이다.The present invention as described above is attached to the upper structure 26 of the bridge as shown in Figure 3 of the accompanying drawings to support the load applied to the upper structure 26, and the load to the bridge (25) or The role is to send alternately.
즉, 상부구조(26)는 교량용 합성빔(10)의 하측에 하부콘크리트(28)를 형성하되, 이 하부콘크리트(28)의 내부에 교량용 합성빔(10)의 인장부(13)가 수용되도록 하고, 이어서 교량용 합성빔(10)의 양측 선단을 일정 간격으로 세워진 교각(25)과 교각(25) 또는 교각(25)과 교대의 상측에 각각 올려 설치한 다음, 상부콘크리트(27)를 형성하기 위한 거푸집을 설치하고, 그 내부에 콘크리트를 타설하여 시공되는 것이다.That is, the upper structure 26 forms the lower concrete 28 on the lower side of the composite beam for bridge 10, the tension portion 13 of the composite composite beam 10 for bridges inside the lower concrete 28 Then, both ends of the composite beam 10 for bridges are then mounted on the pier 25 and pier 25 or the pier 25 and the bridges, which are set at regular intervals, respectively, and then the upper concrete 27 Install the formwork to form a, it is to be built by pouring concrete inside.
이때 상부콘크리트(27)는 하부콘크리트(28)의 상측에 형성되며, 그 내부에 교량용 합성빔(10)의 압축부(11)와 중간부(12)가 수용되도록 하고, 상기 하부콘크리트(28)는 지승(29)에 체결되어 지지되도록 한다.At this time, the upper concrete 27 is formed on the upper side of the lower concrete 28, so that the compression portion 11 and the middle portion 12 of the composite beam for the bridge 10 is accommodated therein, the lower concrete 28 ) Is fastened to the support 29 to be supported.
이와 같이 하여 상부구조(26)가 완성되면 그 상측에 차도 설치, 인도 설치, 난간 설치 등 마무리 작업을 완료하면 교량의 시공이 완료되며, 상부구조(26)의 핵심이 되는 교량용 합성빔(10)이 압축 강도, 전단강도, 휨 강도, 인장 강도 등과 균열 저항에 강하기 때문에, 계절과 기후의 변화에 의해 신장과 수축, 결빙과 해빙을 반복하여도 상기의 각종 강도와 저항력에 변화가 없으며, 교통량의 증가로 인한 피로하중에 우수하여 교량의 안전도가 향상되고 내용연수가 증가된다.When the upper structure 26 is completed in this way, when the finishing work such as driveway installation, sidewalk installation, and railing installation is completed on the upper side, the construction of the bridge is completed, and the composite beam for bridges 10, which is the core of the upper structure 26, is completed. ) Is resistant to compressive strength, shear strength, flexural strength, tensile strength, and crack resistance, so that even if repeated elongation and contraction, freezing, and thawing occur due to the change of seasons and climate, there is no change in the above-mentioned strength and resistance. It is excellent in the fatigue load due to the increase of the safety of the bridge and the service life is increased.
또한, 압축압력과 인장응력이 집중되는 압축부(11)와 인장부(13)를 집중적으로 보강함과 아울러 상기 압축부(11)와 인장부(13)에 중공부(16,19)를 형성함으로써, 상기 압축압력과 인장응력에 의하여 균열이 발생된다 하더라도 중공부(16,19) 내에서 이루어질 뿐 교량용 합성빔(10) 전체로 확산되지 않는다.In addition, the compression unit 11 and the tension unit 13 in which the compressive pressure and the tensile stress are concentrated to reinforce intensively, and the hollow parts 16 and 19 are formed in the compression unit 11 and the tension unit 13. As a result, even if a crack is generated by the compressive pressure and the tensile stress, it is made in the hollow portions 16 and 19 but is not diffused into the entire composite beam 10 for the bridge.
아울러 압축부(11)와 인장부(13)에 비하여 압력이 "0"이되는 중간부(12)는 상대적으로 보강의 정도를 덜하였으므로, 교량용 합성빔(10)을 제조비용이 저렴하게 된다.In addition, since the intermediate portion 12 having a pressure of "0" compared to the compression portion 11 and the tension portion 13 has a relatively low degree of reinforcement, the manufacturing cost of the bridge composite beam 10 becomes low. .
상기와 같이 본 발명은 교량용 합성빔을 형성함에 있어서, 압축압력과 인장응력이 집중되는 압축부와 인장부를 압축보강재와 인장보강재로 집중 보강하고, 상기 압축보강재와 인장보강재의 내측에 격벽과 중공부를 형성하여서 된 것으로, 압축부와 인장부의 표면적이 넓어져 상기 압축압력과 인장응력의 저항력이 우수해지며, 전체적인 보강이 아닌 부분적인 보강이 되도록 함으로써 제조비용이 저렴해지는 효과가 있다.As described above, in the present invention, in forming a composite beam for a bridge, the compressive portion and the tension portion in which the compressive pressure and the tensile stress are concentrated are concentrated and reinforced with the compressive reinforcement and the tensile reinforcement, and the partition walls and the hollow inside the compressive and tensile reinforcement materials By forming the part, the surface area of the compression part and the tension part is widened, so that the resistance of the compression pressure and the tensile stress is excellent, and the partial reinforcement rather than the overall reinforcement has the effect of lowering the manufacturing cost.
또한, 압축압력과 인장응력에 의하여 압축부 및 인장부의 콘크리트에 균열이 발생된다 하여도, 상기 균열이 중공부 내에서 있을 뿐 교량용 합성빔 전체로 확산되지 않으므로, 교량의 안전도를 더욱 향상시키는 등의 유용한 효과가 있다.In addition, even if a crack occurs in the concrete of the compression section and the tension section due to the compression pressure and the tensile stress, the crack is only present in the hollow section and does not diffuse to the entire composite beam for the bridge, thereby further improving the safety of the bridge. Has a useful effect.
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| KR10-2001-0072142A KR100439470B1 (en) | 2001-11-19 | 2001-11-19 | Beam for Bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100985181B1 (en) | 2008-03-06 | 2010-10-05 | 원광대학교산학협력단 | Gider using FRP unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20050052041A (en) * | 2003-11-28 | 2005-06-02 | 심태영 | Composite girder for bridge |
| CN108442229B (en) * | 2018-03-09 | 2019-09-06 | 郑小龙 | A kind of combined beam structure of concrete |
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| KR20010110387A (en) | 2001-12-13 |
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