KR20000030231A - Bridge beam - Google Patents
Bridge beam Download PDFInfo
- Publication number
- KR20000030231A KR20000030231A KR1020000006813A KR20000006813A KR20000030231A KR 20000030231 A KR20000030231 A KR 20000030231A KR 1020000006813 A KR1020000006813 A KR 1020000006813A KR 20000006813 A KR20000006813 A KR 20000006813A KR 20000030231 A KR20000030231 A KR 20000030231A
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- KR
- South Korea
- Prior art keywords
- bridge
- concrete
- composite beam
- strength
- synthetic beam
- Prior art date
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- 239000002131 composite material Substances 0.000 claims description 29
- 239000011372 high-strength concrete Substances 0.000 claims description 9
- 239000012779 reinforcing material Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000004567 concrete Substances 0.000 abstract description 36
- 238000009434 installation Methods 0.000 abstract description 7
- 238000005452 bending Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 230000003319 supportive effect Effects 0.000 abstract 4
- 230000002787 reinforcement Effects 0.000 description 7
- 238000009415 formwork Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001932 seasonal effect Effects 0.000 description 3
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/0224—Non-manual adjustments, e.g. with electrical operation
- B60N2/02246—Electric motors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
- B60N2/067—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable by linear actuators, e.g. linear screw mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/54—Seat suspension devices using mechanical springs
- B60N2/542—Seat suspension devices using mechanical springs made of rubber or other material having high internal friction, e.g. polymers
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
본 발명은 교량용 합성 빔(beam)에 관한 것으로, 특히 제작 비용이 저렴하며 휨 강도, 인장 강도 등이 우수하여 교량의 내용연수를 연장시키는 교량용 합성 빔에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite beam for a bridge, and more particularly, to a composite composite beam for extending a useful life of a bridge due to low manufacturing cost and excellent bending strength and tensile strength.
일반적으로, 사람과 차량 등이 통행하는 교량의 상부구조를 시공할 때에는 상기 상부구조의 일부가 되며 상부구조에 가해지는 하중을 교각으로 보내는 역할을 하는 빔을 사용한다.Generally, when constructing a superstructure of a bridge through which people and vehicles pass, a beam that is part of the superstructure and serves to send a load applied to the superstructure to the bridge is used.
이러한 빔은 "I" 형상으로 그 재질은 일반 콘크리트재 또는 금속재로 이루어지는데, 상부구조를 지지하며 상부구조의 하중을 지중으로 보내 소멸시키는 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 상부구조를 완성하여 사용하는 것이다.These beams have an "I" shape and the material is made of general concrete or metal, and both ends of the beams are on the pier and the pier or the pier and the pier supporting the superstructure and sending away the load of the superstructure to the ground. Put each of them, then install the formwork for constructing the superstructure, the beam is placed in the interior, and then cast concrete to use to complete the superstructure.
그러나, 상기와 같은 교량용 합성 빔은 각종 강도와 균열 저항 등에 약하여 내용연수가 짧고, 각종 강도와 저항의 약화로 인해 붕괴 등의 우려가 있어 유지 및 보수 관리에 많은 비용이 소모된다는 문제점이 있어 왔다.However, such a composite beam for bridges is weak in various strengths and crack resistances, has a short service life, and there is a risk of collapse due to weakening of various strengths and resistances. .
즉, 교량용 빔은 제작비용이 저렴하면서 압축 강도, 전단 강도, 휨 강도, 인장 강도, 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.In other words, the bridge beam must be low in cost and strong in various conditions such as compressive strength, shear strength, flexural strength, tensile strength, crack resistance, etc., but it is equipped with cold, cold, wet, dry, etc. Due to the seasonal nature of our country where repeated ice and ice are repeated, conventional beams made of general concrete or metal are insufficient to withstand the above conditions and are aging prematurely and have a short service life. There has been a risk of severe damage to life and property due to the collapse of the service life.
따라서, 상기와 같은 피해를 방지하기 위해 수시로 교량의 상태를 점검하여 보수하고, 보수가 불가능할 경우에는 철거 후 재시공하여야 하는 등 시간적 투입 비용과 재산적 투입 비용이 막대하다는 문제점이 있어 왔다.Therefore, there has been a problem that the time input cost and the property input cost are enormous, such as to check and repair the condition of the bridge from time to time to prevent such damage, and to rebuild after dismantling if repair is not possible.
본 발명은 상기와 같은 문제점을 해결하기 위해 발명한 것으로, 본 발명의 목적은 우리 나라의 계절적 기후 조건에 잘 견디며, 압축 강도, 전단 강도, 휨 강도, 인장 강도, 균열 저항 등에 우수하여 교량의 내용연수를 증가시키고, 각종 강도와 저항 약화로 인해 붕괴되는 우려를 제거하는 교량용 합성 빔을 제공함에 있다.The present invention has been invented to solve the above problems, the object of the present invention is to withstand the seasonal climatic conditions of our country, and excellent in compressive strength, shear strength, bending strength, tensile strength, crack resistance, etc. It is to provide a composite beam for bridges to increase the soft water and to remove the fear of collapse due to various strength and resistance weakening.
상기와 같은 목적을 달성하기 위한 본 발명은 중간 부분을 협소하게 하며 내부를 중공으로 형성한 보강재를 구비하고, 이 보강재의 내부 중공부에 고강도 콘크리트를 그라우팅하여 이루어진 것을 특징으로 한다.The present invention for achieving the above object is characterized in that the middle portion is provided with a reinforcement formed in the hollow and narrow the middle portion, and made by grouting high-strength concrete in the inner hollow portion of the reinforcement.
도 1은 본 발명에 의한 교량용 합성 빔의 사시도1 is a perspective view of a composite beam for a bridge according to the present invention
도 2는 본 발명에 의한 합성 빔의 하측에 하부 콘크리트를 형성한 상태를 도시한 사시도Figure 2 is a perspective view showing a state in which the lower concrete is formed on the lower side of the composite beam according to the present invention
도 3은 본 발명에 의한 교량용 합성 빔의 설치상태도3 is an installation state of the composite beam for bridges according to the present invention
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
10 : 교량용 합성 빔 11 : 보강재 12 : 고강도 콘크리트DESCRIPTION OF SYMBOLS 10 Composite beam for bridges 11 Reinforcement 12 High-strength concrete
13 : 전단재 14 : PC강선 15 : 상부구조13 shear material 14 PC steel wire 15 superstructure
15a : 하부 콘크리트 15b : 상부 콘크리트 16 : 교각15a: lower concrete 15b: upper concrete 16: pier
17 : 지승17: Jiseung
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 교량용 합성 빔의 사시도이다.1 is a perspective view of a composite beam for a bridge according to the present invention.
상기 도면에서와 같이 본 발명은 교량 상부 구조의 중요 부분인 빔(10)을 형성함에 있어서, 보강재(11)와 고강도 콘크리트(12)로 형성하는데, 보강재(11)는 내부를 중공으로 하고 중간 부분을 협소하게 하여 전체적으로 "I" 형상이 되도록 형성하여 구비한다.As shown in the figure, the present invention is formed of the reinforcement 11 and the high-strength concrete 12 in forming the beam 10, which is an important part of the bridge superstructure, the reinforcement 11 is hollow inside and the middle portion It is formed so as to have a narrow "I" shape as a whole.
상기와 같이 구비한 보강재(11)의 내부에는 고강도 콘크리트(12)를 그라우팅하여 교량용 합성 빔(10)을 구성하는데, 상기 고강도 콘크리트(12)는 강섬유, 유리 섬유 등 섬유를 골고루 분산시킨 섬유보강 콘크리트와 같이 압축 강도, 전단 강도, 휨강도, 인장 강도 등을 증강시키고 균열 저항을 개선시킨 특수 콘크리트를 사용한다.Inside the reinforcing material 11 provided as described above, the high-strength concrete (12) is grouted to form a composite beam 10 for the bridge, the high-strength concrete (12) is a fiber reinforcement evenly dispersed fibers such as steel fibers, glass fibers Like concrete, special concrete is used that has enhanced compressive strength, shear strength, flexural strength, tensile strength, and improved crack resistance.
또한, 본 발명은 교량의 상부구조에 가해지는 하중을 잘 견디고 압축 강도, 전단 강도, 휨 강도, 인장 강도 등 안전과 내용연수에 직결되는 각종 강도를 더욱 증강시키기 위해 보강재(11) 내부에 고강도 콘크리트(12)를 그라우팅할 때, 상기 고강도 콘크리트(12)의 내부에 고도의 인장 강도를 가지는 PC강선이 위치되도록 설치한 다음 그라우팅하며, 상기 교량용 합성 빔(10)을 수용하는 상부구조의 콘크리트 타설시, 상시 콘크리트의 응결을 촉진 강화시켜 견고한 구조물을 완성하기 위해 교량용 합성 빔(10)에 전단재(13)를 형성하는데, 이 전단재(13)는 봉 형상으로 되며 보강재(11)를 삽입 관통하고 그 양측 선단이 보강재(11)의 외측으로 돌출되도록 형성하여 구비한다.In addition, the present invention is a high-strength concrete inside the reinforcing material 11 to withstand the load applied to the upper structure of the bridge well and to further enhance the various strengths, such as compressive strength, shear strength, bending strength, tensile strength, etc. directly connected to safety and service life When grouting (12), the PC steel wire having a high tensile strength is placed inside the high-strength concrete (12), and then grouted, and concrete pouring of the superstructure for receiving the composite beam for bridges (10) In order to accelerate and strengthen the condensation of concrete at all times, a shear member 13 is formed in the composite beam 10 for a bridge to complete a rigid structure. The shear member 13 has a rod shape and a reinforcing member 11 is inserted. It is formed so as to penetrate and protrude both ends of the reinforcing material (11).
첨부한 도면 도 2는 본 발명에 의한 합성 빔(10)의 하측에 하부 콘크리트(15a)를 형성한 상태를 도시한 사시도이고, 도 3은 본 발명에 의한 교량용 합성 빔(10)의 설치상태를 도시한 부분절제 단면도이며, 미설명 부호 15는 교량용 합성 빔(10)을 수용하는 교량의 상부구조, 15b는 교량용 합성 빔(10)을 수용하는 상부 콘크리트, 16은 상부구조(15)의 하중을 지중으로 전달 소멸시키는 교각, 17은 상부구조(15)의 신장과 수축시 교량에 무리가 가해지지 않도록 그 에너지를 흡수 소멸시키는 지승이다.2 is a perspective view showing a state in which the lower concrete 15a is formed below the composite beam 10 according to the present invention, and FIG. 3 is an installation state of the composite beam 10 for bridges according to the present invention. 15 is a superstructure of a bridge for receiving the composite beam 10 for a bridge, 15b is an upper concrete for accommodating the composite beam 10 for a bridge, and 16 is a superstructure 15 The pier, which transfers and dissipates the load into the ground, is a support that absorbs and dissipates the energy so that the bridge is not exerted upon extension and contraction of the superstructure 15.
상기와 같이 구성된 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above are as follows.
교량을 시공할 때 교각(16)을 세우고, 상기 교각(16)의 상단에 사람 및 차량이 통행하는 상부구조(15)를 시공하여 교량을 완성하게 된다.When the bridge is constructed, the bridge 16 is erected, and the upper structure 15 through which people and vehicles pass on the bridge 16 is completed to complete the bridge.
이때, 교각(16)의 상단에 시공되는 상부구조(15)는 상부 콘크리트(15b), 하부 콘크리트(15a), 교량용 합성 빔(10) 등으로 형성되는데, 상부구조(15)를 시공할 때에는 첨부한 도면 도 2에서와 같이 교량용 합성 빔(10)의 하측에 콘크리트를 타설하여 하부 콘크리트(15a)를 형성하되, 이 하부 콘크리트(15a)의 내부에 교량용 합성 빔(10)의 하측이 수용되도록 하여 형성한다.At this time, the upper structure 15 to be constructed on the upper end of the bridge 16 is formed of the upper concrete (15b), lower concrete (15a), the composite beam for the bridge (10), etc., when constructing the upper structure (15) 2, the lower concrete 15a is formed by placing concrete on the lower side of the composite beam 10 for the bridge, and the lower side of the composite beam 10 for the bridge is formed inside the lower concrete 15a. Formed to be accommodated.
이후, 하측에 하부 콘크리트(15a)가 형성된 교량용 합성 빔(10)의 양측 선단을 일정 간격으로 세워진 교각(16)과 교각(16)의 상측에 각각 올려 설치하는데, 이 교량용 합성 빔(10)과 교각(16)이 맞닿는 지점에 계절과 기후의 변화로 인해 상부구조(15)가 신장 또는 수축될 때 그 에너지를 흡수하여 상기 상부구조(15)에 무리가 가해지는 것을 방지하기 위한 지승(17)을 설치한다.Subsequently, both ends of the composite beam 10 for the bridge having the lower concrete 15a formed on the lower side thereof are placed on the upper side of the bridge 16 and the bridge 16, which are erected at regular intervals, respectively. ) To absorb the energy when the superstructure 15 is elongated or contracted due to the change of seasons and climate at the point where the bridge 16 is in contact with the pier 16 to prevent overload on the superstructure 15. 17) Install.
즉, 교량용 합성 빔(10)이 올려져 설치될 교각(16)의 상단 지점에 지승(17)을 설치하고, 상기 지승(17)의 상단에 교량용 합성 빔(10)을 올리면 결과적으로는 교량용 합성 빔(10)의 하측을 수용하는 하부 콘크리트(15a)가 지승(17)의 상측면에 맞닿으며, 이 상태에서 교각(16)에 고정 설치된 지승(17)에 하부 콘크리트(15a)를 체결하여 고정시키면 교량용 합성 빔(10)이 교각(16)에 설치되는 것이다.That is, if the bridge 17 is installed on the upper end of the bridge 16 to be installed on the bridge beam 10 is raised, and the bridge composite beam 10 on the top of the bridge 17, as a result The lower concrete 15a accommodating the lower side of the composite beam 10 for the bridge abuts the upper surface of the support 17, and in this state the lower concrete 15a is attached to the support 17 fixed to the bridge 16. When fastened and fixed, the composite beam 10 for the bridge is installed in the bridge 16.
이와 같이 교량용 합성 빔(10)의 설치가 완료되면 상부 콘크리트(15b)를 형성하기 위한 거푸집을 설치하고, 그 내부에 콘크리트를 타설하여 상부 콘크리트(15b)를 형성하는데, 이때 상부 콘크리트(15a)는 하부 콘크리트(15a)의 상측에 형성되며, 그 내부에 교량용 합성 빔(10) 중 하부 콘크리트(15a)에 수용되지 않은 부분이 수용될 수 있도록 거푸집을 설치한 다음, 콘크리트를 타설하여 형성한다.As such, when the installation of the composite beam 10 for the bridge is completed, formwork for forming the upper concrete 15b is installed, and concrete is poured therein to form the upper concrete 15b, wherein the upper concrete 15a Is formed on the upper side of the lower concrete (15a), the formwork is installed so as to accommodate a portion of the composite beam for the bridge 10 that is not accommodated in the lower concrete (15a), and then cast concrete .
상기와 같이 콘크리트를 타설한 다음, 그 타설된 콘크리트가 굳으면 거푸집을 제거하여 상부구조(10)를 완성하고, 교량의 상부구조(15)가 완성된 후, 그 상측에 차도 설치, 인도 설치, 난간 설치 등 마무리 작업을 완료하면 교량의 시공이 완료된다.After the concrete is poured as described above, if the poured concrete is hardened, formwork is removed to complete the upper structure 10, and after the upper structure 15 of the bridge is completed, the roadway is installed, the sidewalk installation, Construction of the bridge is completed when the finishing work such as railing installation is completed.
상기와 같은 과정에 의해 시공이 완성된 교량은 그 상부구조(15)의 핵심이 되는 교량용 합성 빔(10)이 압축 강도, 전단 강도, 휨 강도, 인장 강도 등과 균열 저항에 강하기 때문에, 계절과 기후의 변화에 의해 신장과 수축, 결빙과 해빙을 반복하여도 상기의 각종 강도와 저항력에 변화가 없어 교량의 안전에 신뢰를 할 수 있고 내용연수도 증가된다.The bridge completed by the above process is because the composite beam 10 for the bridge, which is the core of the superstructure 15, is resistant to compressive strength, shear strength, bending strength, tensile strength, and crack resistance. Even if the elongation and contraction, freezing and thawing are repeated due to the change of climate, the various strengths and resistances are not changed, so the safety of the bridge can be relied on and the service life is increased.
상기와 같이 본 발명은 교량의 상판구조에 핵심이 되는 교량용 합성 빔을 형성함에 있어서, "I" 형상의 보강재를 구비하고, 그 내부에 고강도 콘크리트를 그라우팅하여 구성한 것으로, 계절과 기후 변화로 인해 신장과 수축, 결빙과 해빙이 반복되는 우리 나라의 환경 조건에 약한 종래의 일반 콘크리트재나 금속재로 된 빔에 비해 압축 강도, 전단 강도, 휨 강도, 인장 강도, 균열 저항 등이 우수하여 상기와 같은 환경 조건에 강하므로, 교량의 안전에 신뢰를 할 수 있고 교량의 내용연수를 증가시키는 것은 물론, 제작비용이 저렴하고 시공기간의 단축을 가져올 수 있어 공사비 절감효과도 있는 발명이다.As described above, the present invention is to form a composite beam for the bridge that is the core of the bridge deck structure, having a reinforcement of the "I" shape, it is configured by grouting high-strength concrete therein, due to seasonal and climate change Compared to conventional concrete or metal beams, which are weak to the environmental conditions of our country where elongation and contraction, freezing and thawing are repeated, the compressive strength, shear strength, flexural strength, tensile strength and crack resistance are superior. It is an invention that can be relied on the safety of the bridge, increase the service life of the bridge, as well as the production cost is low and the construction period can be shortened, because the conditions are strong.
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| KR1020000006813A KR20000030231A (en) | 2000-02-14 | 2000-02-14 | Bridge beam |
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| KR1020000006813A KR20000030231A (en) | 2000-02-14 | 2000-02-14 | Bridge beam |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100729370B1 (en) * | 2006-03-02 | 2007-06-15 | 심태영 | Composite beam for girder |
| KR100740512B1 (en) * | 2006-03-06 | 2007-07-19 | 신성건설 주식회사 | Composite beam for girder |
| KR101223942B1 (en) * | 2010-08-18 | 2013-01-18 | 조대연 | Preflex Combination Beam Using Cavity Beam and Construction Method Therof |
| KR101358878B1 (en) * | 2012-02-06 | 2014-02-06 | 삼표건설 주식회사 | Reinforcement member and girder using the same |
| KR101426392B1 (en) * | 2012-02-06 | 2014-08-05 | 주식회사 네비엔 | Reinforcement member and girder using the same |
| KR20150015094A (en) * | 2013-07-31 | 2015-02-10 | 곽노경 | Reinforcement Member for Beam, Beam Equipped with the Reinforcement Member, Construction Structure Using the Beam |
-
2000
- 2000-02-14 KR KR1020000006813A patent/KR20000030231A/en active Search and Examination
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100729370B1 (en) * | 2006-03-02 | 2007-06-15 | 심태영 | Composite beam for girder |
| KR100740512B1 (en) * | 2006-03-06 | 2007-07-19 | 신성건설 주식회사 | Composite beam for girder |
| KR101223942B1 (en) * | 2010-08-18 | 2013-01-18 | 조대연 | Preflex Combination Beam Using Cavity Beam and Construction Method Therof |
| KR101358878B1 (en) * | 2012-02-06 | 2014-02-06 | 삼표건설 주식회사 | Reinforcement member and girder using the same |
| KR101426392B1 (en) * | 2012-02-06 | 2014-08-05 | 주식회사 네비엔 | Reinforcement member and girder using the same |
| KR20150015094A (en) * | 2013-07-31 | 2015-02-10 | 곽노경 | Reinforcement Member for Beam, Beam Equipped with the Reinforcement Member, Construction Structure Using the Beam |
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