KR20020057924A - Production of high yield H-Steel beam strengthening by fiber glass - Google Patents
Production of high yield H-Steel beam strengthening by fiber glass Download PDFInfo
- Publication number
- KR20020057924A KR20020057924A KR1020020033423A KR20020033423A KR20020057924A KR 20020057924 A KR20020057924 A KR 20020057924A KR 1020020033423 A KR1020020033423 A KR 1020020033423A KR 20020033423 A KR20020033423 A KR 20020033423A KR 20020057924 A KR20020057924 A KR 20020057924A
- Authority
- KR
- South Korea
- Prior art keywords
- steel beam
- length
- carbon fiber
- span
- steel
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/06—Means for illuminating specimens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/24—Base structure
- G02B21/26—Stages; Adjusting means therefor
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/36—Microscopes arranged for photographic purposes or projection purposes or digital imaging or video purposes including associated control and data processing arrangements
- G02B21/361—Optical details, e.g. image relay to the camera or image sensor
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/14—Mountings, adjusting means, or light-tight connections, for optical elements for lenses adapted to interchange lenses
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/56—Accessories
- G03B17/565—Optical accessories, e.g. converters for close-up photography, tele-convertors, wide-angle convertors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Astronomy & Astrophysics (AREA)
- Signal Processing (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
본 발명은 기존 H형강의 저판을 탄소섬유로 보강하여 인장응력을 강화 시킴으로써 H형강으로 설치하는 가시설 구조물의 경우 경간의 길이를 늘일 수 있고 또한 강구조로 설계하는 구조물에서는 경간의 길이를 늘이거나 부재의 크기를 줄일 수 있는 방법이다.The present invention can increase the length of the span in the case of the temporary structure installed in the H-beam by reinforcing the bottom plate of the existing H-shaped steel with carbon fiber to strengthen the tensile stress, and in the structure designed as a steel structure to increase the length of the span or It is a way to reduce the size.
일반적으로 강구조물의 설계나 가시설의 설계시 형강의 인장강도는 3000kg/㎠이므로 이에 따라 강구조물의 부재단면의 크기가 결정되고 가시설 공사의 개착식 공법에서 사용되는 H형강의 가로보는 인장강도의 범위내에서 경간의 길이가 결정된다.In general, the tensile strength of the section steel is 3000kg / cm2 when designing the steel structure or designing the temporary facility. Accordingly, the size of the cross-section of the member of the steel structure is determined. The length of the span is determined.
따라서, 종래의 일반적인 강구조물의 H형강의 부재 단면의 크기는 인장응력의 한계 내에서 결정되고 지하철 공사등의 가시설 구조물의 경우의 가로보 설치 시에는 인장응력의 한계로 중간파일을 설치하는 방법으로 설계하였다. 또한 오버 헤드 크레인의 경우 거더의 전단면에 따라 거더의 길이가 결정되므로 경간의 길이는 한정 되었다.Therefore, the size of the cross-section of the H-section of the conventional steel structure is determined within the limit of tensile stress, and the intermediate pile is designed to install the intermediate pile under the limit of the tensile stress when installing cross beams in the case of temporary structures such as subway works. . In addition, in the case of overhead crane, the length of the girder is limited because the length of the girder is determined according to the shear surface of the girder.
강재를 사용하여 구조물을 건설 할 경우 항복응력 이내에서 설계를 하여야 하므로 경간의 길이가 이미 결정된 구조물의 경우에는 부재 단면의 크기가 한정될 수밖에 없다. 또 가시설을 설치하는 공사에서는 경간의 길이가 길 경우에 가로보를 설치하려면 강재의 인장응력의 한계로 중간파일을 설치하여야 한다. 이때 중간파일의 간섭으로 본 구조물의 공사에 효율성과 품질이 크게 저하된다.When constructing a structure using steel materials, the design must be made within the yield stress, so in case of the structure whose span is already determined, the size of the member cross-section is limited. In addition, in the construction of temporary installations, in order to install cross beams at long spans, intermediate piles should be installed due to the limit of tensile stress of steel. At this time, the efficiency and quality of construction of this structure are greatly reduced by the interference of intermediate piles.
본 발명은 단순보에 하중이 가해질 때 보의 저면에는 인장 응력이 상면에는 압축 응력이 발생하는데 저면의 인장응력을 증가시키면 허용 모멘트도 커질 수 있고 허용 모멘트가 커짐으로써 경간의 길이도 길어질 수 있는 것이 그 기본 원리이다. 이는 가시설의 가로보를 H형강을 사용하여 설치하는 경우 H형강의 저판에 인장력을 증가시킴으로 그 효과를 얻을 수 있고 인장력을 늘림으로써 경간의 길이를 길게 할수 있는 H형강을 만드는 것이다.According to the present invention, when a load is applied to a simple beam, a tensile stress is generated on the bottom of the beam, and a compressive stress is generated on the upper surface. When the tensile stress of the bottom is increased, the allowable moment can be increased and the length of the span can be increased by increasing the allowable moment. That's the basic principle. This is to make the H-beams that can achieve the effect by increasing the tensile force on the bottom plate of H-beams when installing the cross beam of the temporary installation using H-beams, and to increase the length of the span by increasing the tensile force.
도1은 기성제품인 H 형강 보의 저판에 탄소섬유 보강 후 추가로 섬유보강 부재를 보호하기 위하여 철판을 부착시킨 도면임.1 is attached to the iron plate to protect the fiber reinforcement member after the carbon fiber reinforcement to the bottom plate of the ready-made H-beam steel beam.
=(M/I)y 에서 (=인장응력, M=모멘트, y=중심축으로 부터의 거리, I=단면2차 모멘트) 인장응력과 모멘트는 비례하고 M=PL/4에서 (M=모멘트, P= 하중, L= 경간길이) 모멘트와 경간의 길이는 비례하므로 인장응력을 늘리면 경간의 길이도 늘릴 수 있다. 또한 이론적으로는 아래 그림에서 보는 바와 같이 최대모멘트의 증가는 경간 길이에 비례하므로 L3=L2-L1, L3/L2=M3/M2이고 이로써 L3=( M3/M1) L1, M3=(L3/L1)M1이 된다. 즉 경간의 길이가 L3만큼 길어지면 모멘트는 길이의 증가분에 비례하여 커지며 이는 경간의 중간부분에 L3의 길이에 해당하는 곳에 모멘트가 M3만큼 증가한다. 즉 저판의 중간 부분에 L3만큼만 탄소섬유로 보강하면 된다. = (M / I) y in ( = Tensile stress, M = moment, y = distance from the central axis, I = cross-section second moment) Tensile stress and moment are proportional and at M = PL / 4 (M = moment, P = load, L = span length) Since the length of the moment and the span is proportional, increasing the tensile stress can also increase the length of the span. Also, theoretically, as shown in the figure below, the increase in the maximum moment is proportional to the span length, so L 3 = L 2 -L 1 , L 3 / L 2 = M 3 / M 2 , whereby L 3 = (M 3 / M 1 ) L 1 , M 3 = (L 3 / L 1 ) M 1 In other words, when the length of the span becomes longer by L 3, the moment increases in proportion to the increase in length, which increases the moment by M 3 at the portion corresponding to the length of L 3 in the middle of the span. In other words, only L 3 needs to be reinforced with carbon fibers in the middle of the bottom plate.
예를 들어 탄소섬유의 인장강도는 35500kg/㎠ 이므로 400x400x13x21의 H형강의 (저판 두께 21mm) 경우 2.5mm의 탄소섬유 합성 패널을 보강하면 저판의 인장응력을 3,000kg/㎠에서 35,500kg/㎠으로 늘일 수 있으므로 기존의 H형강으로 가시설을 할 경우 보다 경간의 길이를 1.5배 늘일 수 있다. 또한 300x300x10x15의 H형강 저판에 2mm의 탄소섬유 합성 패널을 보강하면 경간의 길이를 1.5배 늘일 수 있다.For example, the tensile strength of carbon fiber is 35500kg / ㎠, so in the case of 400x400x13x21 H-shaped steel (base plate thickness 21mm), reinforcement of 2.5mm carbon fiber composite panel increases the tensile stress of the base plate from 3,000kg / ㎠ to 35,500kg / ㎠ Therefore, the length of span can be increased by 1.5 times than that of existing H-beam. In addition, the reinforcement of 2mm carbon fiber composite panel on the 300x300x10x15 H-beam base plate can increase the length of span 1.5 times.
탄소섬유를 레진으로 H형강 저판에 판재로 성형시켜 부착시키고 그위에 탄소섬유 판재를 보호하는 철판을 중첩하여 접합함으로써 완성된다.The carbon fiber is formed by attaching the carbon fiber to the H-shaped steel plate by using a sheet and attaching the steel plate to protect the carbon fiber sheet.
본 발명은 지하철 공사 등의 개착식 터파기 공사 현장에서 복공판 공사 시공시 경간의 길이를 늘려 중간파일을 생략하여 본구조물의 시공성을 높일 수가 있으며 하천통과 가설교량 등에도 적용하면 교대와 교대간의 길이를 늘일 수가 있어 하천 통수단면을 줄이지 않고 가설교량을 설치할 수가 있다. 또한 오버 헤드 크레인에서 거더(레일)의 전단면이 같을 경우에 거더의 길이를 늘일수 있는 등 그 용도가 다양하다.The present invention can increase the construction of the structure by omitting the intermediate pile by increasing the length of the construction of the double-hole plate construction at the installation site of the construction of the trench, such as subway construction, and when applied to the stream passage and temporary bridges, etc. Since it can be extended, temporary bridges can be installed without reducing the river passage surface. In addition, in the overhead crane, when the shear surface of the girder (rail) is the same, the use of the girder can be extended, such as to extend the length.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020033423A KR20020057924A (en) | 2002-06-14 | 2002-06-14 | Production of high yield H-Steel beam strengthening by fiber glass |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020033423A KR20020057924A (en) | 2002-06-14 | 2002-06-14 | Production of high yield H-Steel beam strengthening by fiber glass |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20020057924A true KR20020057924A (en) | 2002-07-12 |
Family
ID=27726832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020020033423A KR20020057924A (en) | 2002-06-14 | 2002-06-14 | Production of high yield H-Steel beam strengthening by fiber glass |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20020057924A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20220114794A (en) | 2021-02-09 | 2022-08-17 | 이레이노베이션 주식회사 | Fermented salt using Bacillus strain and its manufacturing method |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01105871A (en) * | 1987-10-19 | 1989-04-24 | Ohbayashi Corp | Method of reinforcing beam |
JPH0960309A (en) * | 1995-08-28 | 1997-03-04 | Ohbayashi Corp | Reinforcing method for beam |
JPH1054107A (en) * | 1996-08-08 | 1998-02-24 | Nippon Light Metal Co Ltd | Carbon fiber reinforced aluminum beam structure and its manufacture |
JPH1061099A (en) * | 1996-08-23 | 1998-03-03 | Natl House Ind Co Ltd | Long-sized member for construction |
KR19980051329A (en) * | 1996-12-23 | 1998-09-15 | 이창남 | How to reinforce structural member using fiber sheet |
KR200216701Y1 (en) * | 2000-10-17 | 2001-03-15 | 주식회사희진엔지니어링 | structure of beam reinforcement |
KR20030040774A (en) * | 2001-11-16 | 2003-05-23 | 홍원기 | A precast concrete using carbon fiber |
-
2002
- 2002-06-14 KR KR1020020033423A patent/KR20020057924A/en not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01105871A (en) * | 1987-10-19 | 1989-04-24 | Ohbayashi Corp | Method of reinforcing beam |
JPH0960309A (en) * | 1995-08-28 | 1997-03-04 | Ohbayashi Corp | Reinforcing method for beam |
JPH1054107A (en) * | 1996-08-08 | 1998-02-24 | Nippon Light Metal Co Ltd | Carbon fiber reinforced aluminum beam structure and its manufacture |
JPH1061099A (en) * | 1996-08-23 | 1998-03-03 | Natl House Ind Co Ltd | Long-sized member for construction |
KR19980051329A (en) * | 1996-12-23 | 1998-09-15 | 이창남 | How to reinforce structural member using fiber sheet |
KR200216701Y1 (en) * | 2000-10-17 | 2001-03-15 | 주식회사희진엔지니어링 | structure of beam reinforcement |
KR20030040774A (en) * | 2001-11-16 | 2003-05-23 | 홍원기 | A precast concrete using carbon fiber |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20220114794A (en) | 2021-02-09 | 2022-08-17 | 이레이노베이션 주식회사 | Fermented salt using Bacillus strain and its manufacturing method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1383962A4 (en) | Prestressed composite truss girder and construction method of the same | |
CN112267367B (en) | Method for converting arch-first beam-later system of self-anchored steel box tied arch bridge | |
JP2009041272A (en) | Construction method for bridge | |
KR101373169B1 (en) | Tention typed cable-stayed bridge construction method using hybrid decksegment | |
JP2009041271A (en) | Construction method for bridge | |
CN103726440B (en) | A kind of pipe web grider and preparation method thereof | |
KR100767145B1 (en) | Construction method of prestressed concrete temporary bridge that can be assembled and dismantled using lateral steel wire | |
CN105603890A (en) | Extradosed type external cable reinforced girder bridge | |
KR20020057924A (en) | Production of high yield H-Steel beam strengthening by fiber glass | |
CN112609637B (en) | Prestressing force reinforced structure of aqueduct body | |
KR20050080092A (en) | Partial embedded composite bottom plate system using perforated steel sheet as shear connector | |
KR102245795B1 (en) | PSC girder with efficiently placed prestressing strand | |
CN1147589A (en) | Prestressed reinforced concrete structure and its construction method | |
CN214245330U (en) | Novel large-tonnage tension swing pier structure of cable-stayed bridge auxiliary pier | |
CN211447265U (en) | Laminated plate type edge member and solid shear wall horizontal connection structure | |
CN111119065B (en) | Steel-concrete composite beam support-free construction process | |
JP2003082618A (en) | Bridge earthquake-resistant reinforcing method | |
JP4493245B2 (en) | Suspended floor slab bridge and method for reinforcing suspended floor slab | |
Wang et al. | Application of concrete filled steel tubular arch bridges in China | |
KR100840409B1 (en) | A bridge with double eccentric depend on stay cables | |
CN219992843U (en) | Prefabricated concatenation frame of slidingtype building floor | |
CN217651597U (en) | Combined anchoring structure of stayed-cable tower | |
CN220394965U (en) | Truss floor slab | |
CN211689962U (en) | Support-free construction supporting device for steel-concrete composite beam | |
KR100449688B1 (en) | Panel for reinforcing concrete structure |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |