CN101457591B - Steel beam through hole reinforcement method - Google Patents

Steel beam through hole reinforcement method Download PDF

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Publication number
CN101457591B
CN101457591B CN2008101546968A CN200810154696A CN101457591B CN 101457591 B CN101457591 B CN 101457591B CN 2008101546968 A CN2008101546968 A CN 2008101546968A CN 200810154696 A CN200810154696 A CN 200810154696A CN 101457591 B CN101457591 B CN 101457591B
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CN
China
Prior art keywords
reinforcing ring
described
steel
hole
steel beam
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CN2008101546968A
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Chinese (zh)
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CN101457591A (en
Inventor
韩庆华
杨志
金明昌
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天津大学
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Priority to CN2008101546968A priority Critical patent/CN101457591B/en
Publication of CN101457591A publication Critical patent/CN101457591A/en
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Publication of CN101457591B publication Critical patent/CN101457591B/en

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Abstract

The invention discloses a method for reinforcing steel beam through holes. Through holes are opened in the plastic zone of the steel beam; the structures of needed reinforcing rings are determined according to the positions and diameters of the holes, the reinforcing rings are welded on the through holes. The method meets the need of modern engineering practice, solves the problem of reinforcing after opening through holes in the plastic zone, and expands application range of reinforcing methods, which can not only be applied to common steel frame beams but also be applied to the steel beams of steel reinforced concrete columns (CFT), the steel beam of concrete filled steel tubular column (SRC), steel frame composite beam, etc.

Description

Steel beam through hole reinforcement method

Technical field

The present invention relates to multilayer and high-rise steel structure reinforcement in the civil engineering, relate in particular to steel beam through hole reinforcement method.

Background technology

Existing " high-rise civil building steel work tecnical regulations " is middle regulation (JGJ99-98): when the circular port diameter is less than or equal to 1/3 deck-molding, can refuse reinforcement; When greater than 1/3 deck-molding, available annular stiffening rib is strengthened, and also available sleeve pipe or annular stiffening plate are strengthened.These several reinforcement measures can only be arranged on outside beam-ends is equivalent to the scope of deck-molding, and require the orifice diameter must not be greater than 1/2 of deck-molding.If require in the plastic zone, to punch, must develop a kind of through hole reinforcement, to adapt to the demand of modernization project practice.

Summary of the invention

Purpose of the present invention provides a kind of steel beam through hole reinforcement method behind the hole of opening just in order to overcome above-mentioned deficiency of the prior art in the plastic zone.

The present invention is achieved by following technical proposals: a kind of steel beam through hole reinforcement method, in the plastic zone of girder steel, open the hole; Determine the structure of needed reinforcing ring according to position of opening, aperture, reinforcing ring is welded on the described through hole; Wherein: described hole and reinforcing ring should satisfy following parameter request: 1. offset e ≤ 1 2 ( 2 3 H - D ) ; 2. the pillar edge is to the distance of through hole central point L ≥ 0.7 H - 1 2 ( 2 3 H - D ) ; 3. reinforcing ring aperture D is: 100~600mm; 4. aperture ratio D H ≤ 0.5 ; Described H is the girder steel height, and the periphery of described reinforcing ring is provided with step, and the axis of great circle of described step is D 3, described step width is h 1, highly be b 1, the width of reinforcing ring is h 2, the thickness of reinforcing ring is b 2, be the inclined-plane between the tip circle on the reinforcing ring step and the roundlet of step, the inclination angle on described inclined-plane is α, D 3〉=2h 1+ 2 (b 2-b 1) tan α+2h 2+ D, wherein: h 1=12 ± 2mm, α=30 ° ± 5 °, h 2Value: I.100≤D≤during 300mm, h 2=20 ± 4mm; During II.300≤D≤600mm, h 2=40 ± 4mm; b 1=5~10mm, b 2Than about the thick 10mm of steel beam web plate thickness that needs reinforcement.

Described reinforcement annulus is by tow sides and girder steel welding.

The invention has the beneficial effects as follows: be applicable to the modernization project need of practice, solved the problem of in the plastic zone, opening reinforcement behind the hole, enlarged the scope of application of reinforcement, not only go for common steel-frame beam, can also be used for forms such as profile steel concrete column (CFT) girder steel, steel core concrete column (SRC) girder steel, steel frame compound beam.

Description of drawings

Fig. 1 is a structural representation of the invention process;

Fig. 2 is the structural representation of reinforcing ring of the present invention;

Fig. 3 is the A portion enlarged drawing of Fig. 2;

Fig. 4 is the side schematic diagram of Fig. 2;

Fig. 5 is a reinforcing ring welding schematic diagram.

Reference numeral: 1, pillar, 2, girder steel, 3, reinforcing ring.

The specific embodiment

Below in conjunction with drawings and Examples the present invention is further described:

As Fig. 1~shown in Figure 5, a kind of steel beam through hole reinforcement method of the present invention at first according to designing requirement, is determined opening diameter and position of opening, determines the concrete size of reinforcing ring, i.e. relevant parameters such as thickness, internal diameter, external diameter according to opening diameter and position.Selected reinforcing ring need check its bending resistance and shear-carrying capacity, to reach the double requirements of intensity and function of use through the new girder steel of the final formation of welding processing technology.Concrete grammar is:

In the plastic zone of girder steel 2, open the hole; Determine the structure of needed reinforcing ring 3 according to position of opening, aperture, reinforcing ring 3 is welded on the described through hole;

Wherein: described hole and reinforcing ring should satisfy following parameter request: 1. offset e ≤ 1 2 ( 2 3 H - D ) ; 2. pillar 1 edge is to the distance of through hole central point L ≥ 0.7 H - 1 2 ( 2 3 H - D ) ; 3. reinforcing ring aperture D is: 100~600mm; 4. aperture ratio D H ≤ 0.5 ; Described H is girder steel 2 height, and the periphery of described reinforcement bad 3 is provided with step, and the axis of great circle of described step is D 3, described step width is h 1, highly be b 1, the width of reinforcing ring 3 is h 2, the thickness of reinforcing ring 3 is b 2, be the inclined-plane between the tip circle on reinforcing ring 3 steps and the roundlet of step, the inclination angle on described inclined-plane is α, D 3〉=2h 1+ 2 (b 2-b 1) tan α+2h 2+ D, wherein: h 1=12 ± 2mm, α=30 ° ± 5 °, h 2Value: I.100≤D≤during 300mm, h 2=20 ± 4mm; During II.300≤D≤600mm, h 2=40 ± 4mm; b 1=5~10mm, b 2Than about the thick 10mm of steel beam web plate thickness that needs reinforcement; Described reinforcement annulus 3 is by welding at I side, II side tow sides position and girder steel.

All be that requirement reinforcement position must be positioned at outside the girder steel plastic hinge region about the girder steel reinforcement measure in the past, and sometimes some pipeline, circuit etc. must pass through plastic hinge region, at this moment the outer reinforcement technology of plastic hinge region just can not be suitable fully.At this shortcoming of previous reinforcement technology, this reinforcement can be used for plastic hinge region, as long as it is just passable to meet the relative dimensions requirement, has so just brought very big convenience to the designer.

After design, can add up quantity and size that girder steel punches, carry out industrialization, portion's product production according to engine request according to the present invention again.In addition, be exactly that these method fabrication and installation are convenient, efficient, at last through the checking computations of the process of the girder steel intensity after the reinforcement, can satisfy the double requirements of intensity and use.

Reinforcing ring 3 is by casting, and material property and processing and fabricating must satisfy the requirement of existing China Engineering Construction Standardization Association standard " cast steel node tecnical regulations ".Earlier hold through hole successfully in the place of needs perforate, allow through hole tolerance 15mm according to designing requirement; Put the position when reinforcing ring 3 is installed earlier well, undertaken tentatively fixing by periphery four edge peak elder generations spot welding up and down of welding I side then; Determine errorless after, weld the automatic welding of I side earlier, and then weld the automatic welding of II side, form unified whole.

Although in conjunction with the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within protection scope of the present invention.

Claims (2)

1. a steel beam through hole reinforcement method is characterized in that, opens the hole in the plastic zone of girder steel; Determine the structure of needed reinforcing ring according to position of opening, aperture, reinforcing ring is welded on the described through hole; Wherein: described hole and reinforcing ring should satisfy following parameter request: 1. offset 2. the pillar edge is to the distance of through hole central point 3. reinforcing ring aperture D is: 100~600mm; 4. aperture ratio Described H is the girder steel height, and the periphery of described reinforcing ring is provided with step, and the axis of great circle of described step is D 3, described step width is h 1, highly be b 1, the width of reinforcing ring is h 2, the thickness of reinforcing ring is b 2, be the inclined-plane between the tip circle on the reinforcing ring step and the roundlet of step, the inclination angle on described inclined-plane is α, D 3〉=2h 1+ 2 (b 2-b 1) tan α+2h 2+ D, wherein: h 1=12 ± 2mm, α=30 ° ± 5 °, h 2Value: I.100≤D≤during 300mm, h 2=20 ± 4mm; During II.300≤D≤600mm, h 2=40 ± 4mm; b 1=5~10mm, b 2Than the thick 10mm of steel beam web plate thickness that needs reinforcement.
2. steel beam through hole reinforcement method according to claim 1 is characterized in that, described reinforcing ring is by tow sides and girder steel welding.
CN2008101546968A 2008-12-30 2008-12-30 Steel beam through hole reinforcement method CN101457591B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008101546968A CN101457591B (en) 2008-12-30 2008-12-30 Steel beam through hole reinforcement method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008101546968A CN101457591B (en) 2008-12-30 2008-12-30 Steel beam through hole reinforcement method

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Publication Number Publication Date
CN101457591A CN101457591A (en) 2009-06-17
CN101457591B true CN101457591B (en) 2010-08-18

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CN2008101546968A CN101457591B (en) 2008-12-30 2008-12-30 Steel beam through hole reinforcement method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI568913B (en) * 2014-07-01 2017-02-01 Senqcia Corp Liang Buqiang Metal Parts and Beam Reinforcement Structure

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103696535A (en) * 2013-12-26 2014-04-02 南京工业大学 Round corrugated web beam punching part with high utilization rate
CN104179297B (en) * 2014-08-21 2016-06-15 四川金锋建设有限公司 Girder steel threading hole reinforced structure
CN106087779B (en) * 2016-06-06 2018-10-23 上海交通大学 The pasting board reinforcement in current hole is opened up inside steel case bridge tower
CN105970839B (en) * 2016-06-06 2018-10-23 上海交通大学 Cable-stayed bridge steel case bridge tower crosses the pasting board reinforcement in rope hole
CN106012870B (en) * 2016-06-06 2018-10-23 上海交通大学 The hole edge that uniaxial compression opens oblong hole steel plate is put more energy into reinforcement
CN105970840B (en) * 2016-06-06 2018-10-23 上海交通大学 A kind of reinforcement being provided with continuous elliptical aperture compression steel plate
CN106012871B (en) * 2016-06-06 2018-10-23 上海交通大学 The coaming plate reinforcement of steel case bridge tower oblong manhole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI568913B (en) * 2014-07-01 2017-02-01 Senqcia Corp Liang Buqiang Metal Parts and Beam Reinforcement Structure

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