CN104878879A - Anti-shear reinforcing structure of steel beam - Google Patents
Anti-shear reinforcing structure of steel beam Download PDFInfo
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- CN104878879A CN104878879A CN201510242714.8A CN201510242714A CN104878879A CN 104878879 A CN104878879 A CN 104878879A CN 201510242714 A CN201510242714 A CN 201510242714A CN 104878879 A CN104878879 A CN 104878879A
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- steel
- shearing resistance
- girder steel
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- resultant force
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Abstract
The invention provides an anti-shear reinforcing structure of a steel beam. The anti-shear reinforcing structure comprises anti-bending steel plate walls as well as steel beams at the upper and lower ends of the anti-bending steel plate walls, wherein the steel beams are H-shaped beams or I-shaped beams, equivalent eccentric crossed supports are crossed with the steel beams to form vertical resultant force application points, each steel beam comprises an anti-shear reinforcing section and a non-anti-shear reinforcing section, the height of the each steel beam is hb, the anti-shear reinforcing section comprises an area between the vertical resultant force application points corresponding to two adjacent anti-bending steel plate walls, and an area formed by outward extending of the vertical resultant force application points by 1/2 hb, two sides of webs of the anti-shear reinforcing sections are provided with corrugated steel plates, each corrugated steel plate comprises a first horizontal section, a second horizontal section and an oblique section, at the vertical resultant force application points, the first horizontal sections are tightly welded to the webs of the steel beams, and the oblique sections are welded to two flanges of the anti-shear reinforcing sections. According to the invention, the anti-shear bearing force of the steel beams is improved, the webs do not need to be heightened, so that the functions of a building are not influenced, and moreover, the difficulties in purchasing and welding due to adoption of a thick board or a height-variable beam as the steel beam are avoided.
Description
Technical field
The present invention relates to construction engineering technical field, structure is strengthened in the shearing resistance particularly relating to a kind of girder steel.
Background technology
Anti-buckling steel plate wall is as a kind of Structural Energy Dissipation component of function admirable, there is very stable hysteretic characteristic and good low-Cycle Fatigue Characteristics, greatly can improve anti-side rigidity and the bearing capacity of structure, and consume energy for structure provides considerable additional damping ratio by plasticity simultaneously, thus play the effect reducing seismic structural response, be therefore with a wide range of applications.
After being connected with Zhou Bianzhu for avoiding steel plate wall, Zhou Bianzhu is caused to the adverse effect of extra normal force and additional bending moment, therefore anti-buckling steel plate wall is generally both sides connection, is namely only connected with upper and lower girder steel, and is not connected with Zhou Bianzhu.
In addition, in general, the standard width of a room in an old-style house and the required steel plate wall design bearing capacity of structure are all larger, design according to full wafer steel plate wall, easily cause the difficulty that steel plate wall makes, transports and install, therefore, existing research is by steel plate wall modularization at present, namely replace full wafer steel plate wall with multi-disc small size steel plate wall, then leave certain interval between multi-disc steel plate wall and be not interconnected.
There are some researches show, anti-buckling steel plate wall can be reduced to eccentric cross support, therefore there is eccentric beam section between known steel plate wall, at this place, there is larger shearing action, for avoiding steel beam web plate shear yielding, and then adverse effect is caused to the performance of anti-buckling steel plate wall, the cross section of girder steel up and down of anti-buckling steel plate wall need be increased or web thickens, to meet shear-carrying capacity demand.
But according to increasing section height, the girder steel after increasing must affect the realization of building function; And if thicken steel beam web plate, then often because thickness causes too greatly buying and welding difficulty.
Summary of the invention
The shortcoming of prior art in view of the above, the technical problem to be solved in the present invention is to provide a kind of realization and being convenient to being conducive to building function to purchase and the shearing resistance of girder steel of welding strengthens structure, to overcome the above-mentioned defect of prior art.
In order to solve the problems of the technologies described above, structure is strengthened in the shearing resistance that the invention provides a kind of girder steel, comprise the girder steel at anti-buckling steel plate wall and the upper and lower two ends of anti-buckling steel plate wall, described girder steel is H type or i-shape steel beam, the web copline of described anti-buckling steel plate wall and described girder steel, the eccentric cross support of equivalence of described anti-buckling steel plate wall and described girder steel intersect at vertical point of resultant force;
Described girder steel comprises shearing resistance strengthening segment and non-shearing resistance strengthening segment, the deck-molding of getting described girder steel is hb, and described shearing resistance strengthening segment comprises region between the vertical point of resultant force corresponding to two adjacent anti-buckling steel plate walls and vertical point of resultant force and to stretch out the region of 1/2hb;
The web both sides of described shearing resistance strengthening segment are provided with corrugated steel, described corrugated steel comprises the first horizontal segment, the second horizontal segment and connects the first horizontal segment and the second horizontal segment oblique section, at described vertical point of resultant force place, described first horizontal segment is close to the web welding of described girder steel; Described oblique section is welded with two edges of a wing of described shearing resistance strengthening segment.
Preferably, the thickness of described corrugated steel is not more than 20mm.
Alternatively, the web both sides of described shearing resistance strengthening segment are close to respectively and are welded with one block of plain plate, and described corrugated steel is located at the outside of described plain plate, and the first horizontal segment of described corrugated steel is close to the welding of described plain plate.
Preferably, the thickness of described plain plate is 2 times of the thickness of described corrugated steel.
Preferably, described second horizontal segment is positioned at the inside on the edge of a wing of described shearing resistance strengthening segment.
As mentioned above, structure is strengthened in the shearing resistance of girder steel of the present invention, has following beneficial effect:
1, by improving shear-carrying capacity at steel beam web plate both sides welding corrugated steel, and do not need to increase web and affect building function, avoid the buying that causes owing to adopting slab or And of Varying Depth beam simultaneously and weld a difficult problem.In addition, because oblique section of corrugated steel welds with web and the edge of a wing, can stiffening rib be equivalent to, therefore other stiffening ribs can not be set in the shearing resistance strengthening segment of girder steel, thus eliminate the setting of other stiffening rib.
2, the present invention is not only applicable to newly-built steel beam structure, also be applicable to the seismic hardening of existing steel beam structure simultaneously, for the seismic hardening of existing steel beam structure, only shearing resistance of the present invention need be adopted to strengthen structure to eccentric beam section and carry out shearing resistance reinforcement, thus construction is simple, good economy performance, has good promotion and application prospect.
3, the shearing resistance that the present invention is not only applicable to the upper and lower girder steel of anti-buckling steel plate wall is strengthened, and the shearing resistance being also applicable to girder steel in other situation is strengthened, applied widely.
Accompanying drawing explanation
Fig. 1 is shown as a post apart from the frame construction schematic front view in the anti-buckling steel plate wall situation of interior multi-disc.
Fig. 2 is shown as the schematic front view of the shearing resistance reinforcement structure of girder steel of the present invention.
Fig. 3 to be shown as in embodiment one Fig. 2 along the generalized section in A-A direction.
Fig. 4 to be shown as in embodiment two Fig. 2 along the generalized section in A-A direction.
Element numbers explanation
1 girder steel
2 anti-buckling steel plate walls
3 weeks side columns
4 non-shearing resistance strengthening segments
5 shearing resistance strengthening segments
6 equivalent eccentric cross supports
7 vertical point of resultant force
8 steel beam flange
First horizontal segment of 9 corrugated steels
Oblique section of 10 corrugated steels
Second horizontal segment of 11 corrugated steels
12 steel beam web plates
13 plain plates
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this manual can understand other advantages of the present invention and effect easily.
Refer to Fig. 1 to Fig. 4.Notice, structure, ratio, size etc. that this manual institute accompanying drawings illustrates, content all only in order to coordinate manual to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, all should still drop in scope that disclosed technology contents can contain.Simultaneously, quote in this manual as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
In view of there is eccentric beam section between anti-buckling steel plate wall, in eccentric beam section, there is larger shearing action, for avoiding the web shear yielding of the girder steel of anti-buckling steel plate wall upper and lower, and then adverse effect is caused to the performance of anti-buckling steel plate wall, the girder steel cross section of anti-buckling steel plate wall upper and lower need be increased or web thickens, to meet shear-carrying capacity demand; But according to increasing section height, the girder steel after increasing must affect the realization of building function; And if thicken steel beam web plate, then often because thickness causes too greatly buying and welding difficulty.Structure is strengthened in the shearing resistance that the present inventor designs a kind of girder steel, by the web both sides of the shearing resistance strengthening segment at girder steel, corrugated steel is set, the shear resistance of the shearing resistance strengthening segment of girder steel is strengthened, thus do not need to increase girder steel cross section or thicken web thickness to meet shear-carrying capacity demand, thus be conducive to the realization of building function, and be convenient to buying and welding.
Be described in detail strengthening structure by specific embodiment to the shearing resistance of girder steel of the present invention below.
First, as shown in Figure 1, structure is strengthened in a kind of shearing resistance of girder steel, comprises the girder steel 1 at anti-buckling steel plate wall 2 and the upper and lower two ends of anti-buckling steel plate wall.The left and right sides of anti-buckling steel plate wall 2 is not connected with Zhou Bianzhu 3, has the anti-buckling steel plate wall 2 of multi-disc in a post distance between two Zhou Bianzhu 3.Anti-buckling steel plate wall 2 can be reduced to equivalent eccentric cross support 6, and the eccentric cross support 6 of equivalence of described anti-buckling steel plate wall 2 intersects at vertical point of resultant force 7 with described girder steel 1.
Described girder steel 1 is H type or i-shape steel beam, as shown in Figure 3, Figure 4, web 12 copline of described anti-buckling steel plate wall 2 and described girder steel 1, as shown in Figures 1 to 4, described girder steel 1 comprises shearing resistance strengthening segment 5 and non-shearing resistance strengthening segment 4, as shown in Figure 1, the deck-molding of getting described girder steel 1 is hb, and described shearing resistance strengthening segment 5 comprises region between the vertical point of resultant force 7 corresponding to two adjacent anti-buckling steel plate walls 2 and vertical point of resultant force 7 and to stretch out the region of 1/2hb.
As shown in Figures 2 to 4, web 12 both sides of described shearing resistance strengthening segment 5 are provided with corrugated steel, described corrugated steel comprises the first horizontal segment 9, second horizontal segment 11 and connects the first horizontal segment and the second horizontal segment oblique section 10, at described vertical point of resultant force 7 place, the web 12 that described first horizontal segment 9 is close to described girder steel 1 welds; Described oblique section 10 is welded with two edges of a wing of described shearing resistance strengthening segment 5.
Embodiment one
According to shear-carrying capacity demand, obtain the desired thickness δ of corrugated steel at more than 20mm.
Then, as shown in Figure 2 and Figure 3, be close to respectively in web 12 both sides of described shearing resistance strengthening segment 5 and be welded with one block of plain plate 13, the thickness of plain plate 13 is 1/3 δ; Again described corrugated steel is located at the outside of described plain plate 13, the actual (real) thickness of described corrugated steel be 1/6 δ (in a word, the actual (real) thickness of described corrugated steel is not more than 20mm), make the first horizontal segment 9 of described corrugated steel be close to described plain plate 13 to weld, make oblique section 10 of described corrugated steel to weld with two edges of a wing 8 of described shearing resistance strengthening segment 5; And make the second horizontal segment 11 of described corrugated steel be positioned at the inside on the edge of a wing 8 of described shearing resistance strengthening segment 5, the second horizontal segment 11 is welded with two edges of a wing 8 of described shearing resistance strengthening segment 5.
Embodiment two
According to shear-carrying capacity demand, the desired thickness δ obtaining corrugated steel is not more than 20mm.
Then, the actual (real) thickness of corrugated steel and desired thickness δ; As shown in Figure 2, Figure 4 shows, described corrugated steel is located at the both sides of the web 12 of described shearing resistance strengthening segment 5, at described vertical point of resultant force 7 place, the web 12 making the first horizontal segment 9 of described corrugated steel be close to described girder steel 1 welds; Oblique section 10 of described corrugated steel is made to weld with two edges of a wing 8 of described shearing resistance strengthening segment 5; And make the second horizontal segment 11 of described corrugated steel be positioned at the inside on the edge of a wing 8 of described shearing resistance strengthening segment 5, the second horizontal segment 11 is welded with two edges of a wing 8 of described shearing resistance strengthening segment 5.
Structure is strengthened in the shearing resistance of girder steel of the present invention, not only be applicable to new building structure, also be applicable to the seismic hardening of existing building structure, when carrying out seismic hardening for existing building structure, if shearing resistance strengthening segment 5 has been provided with any type of stiffening rib, then need first stiffening rib to be excised, and then weld required corrugated steel in shearing resistance strengthening segment 5, or weld plain plate 13 and corrugated steel.
In sum, structure is strengthened in the shearing resistance of girder steel of the present invention, by improving shear-carrying capacity at steel beam web plate both sides welding corrugated steel, avoids a series of problems such as increasing the building function that girder steel causes is impaired, economy reduction; Avoid the buying and a welding difficult problem that cause owing to adopting thick web or And of Varying Depth beam simultaneously.In addition, because oblique section of corrugated steel welds with web and the edge of a wing, can stiffening rib be equivalent to, therefore other stiffening ribs can not be set in the shearing resistance strengthening segment of girder steel, thus eliminate the setting of other stiffening rib.The present invention is not only applicable to newly-built steel beam structure, also be applicable to the seismic hardening of existing steel beam structure simultaneously, for the seismic hardening of existing steel beam structure, only shearing resistance of the present invention need be adopted to strengthen structure to eccentric beam section and carry out shearing resistance reinforcement, thus construction is simple, good economy performance, has good promotion and application prospect.The shearing resistance that the present invention is not only applicable to the upper and lower girder steel of anti-buckling steel plate wall is strengthened, and the shearing resistance being also applicable to girder steel in other situation is strengthened, applied widely.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (5)
1. structure is strengthened in the shearing resistance of a girder steel, it is characterized in that, comprise the girder steel (1) at anti-buckling steel plate wall (2) and the upper and lower two ends of anti-buckling steel plate wall, described girder steel (1) is H type or i-shape steel beam, web (12) copline of described anti-buckling steel plate wall (2) and described girder steel (1), the eccentric cross support (6) of equivalence of described anti-buckling steel plate wall (2) intersects at vertical point of resultant force (7) with described girder steel (1);
Described girder steel (1) comprises shearing resistance strengthening segment (5) and non-shearing resistance strengthening segment (4), the deck-molding of getting described girder steel (1) is hb, and described shearing resistance strengthening segment (5) comprises region between the vertical point of resultant force (7) corresponding to two adjacent anti-buckling steel plate walls (2) and vertical point of resultant force (7) and to stretch out the region of 1/2hb;
The web both sides of described shearing resistance strengthening segment (5) are provided with corrugated steel, described corrugated steel comprises the first horizontal segment (9), the second horizontal segment (11) and connects oblique section (10) of the first horizontal segment and the second horizontal segment, at described vertical point of resultant force (7) place, described first horizontal segment (9) is close to web (12) welding of described girder steel (1); Described oblique section (10) weld with two edges of a wing of described shearing resistance strengthening segment (5).
2. structure is strengthened in the shearing resistance of girder steel according to claim 1, it is characterized in that: the thickness of described corrugated steel is not more than 20mm.
3. structure is strengthened in the shearing resistance of girder steel according to claim 2, it is characterized in that: web (12) both sides of described shearing resistance strengthening segment (5) are close to respectively and are welded with one piece of plain plate (13), described corrugated steel is located at the outside of described plain plate (13), and first horizontal segment (9) of described corrugated steel is close to described plain plate (13) welding.
4. structure is strengthened in the shearing resistance of girder steel according to claim 3, it is characterized in that: the thickness of described plain plate (13) is 2 times of the thickness of described corrugated steel.
5. structure is strengthened in the shearing resistance of the girder steel according to any one of Claims 1-4, it is characterized in that: described second horizontal segment (11) is positioned at the inside on the edge of a wing of described shearing resistance strengthening segment (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510242714.8A CN104878879B (en) | 2015-05-13 | 2015-05-13 | The shearing resistance reinforcement structure of girder steel |
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| CN201510242714.8A CN104878879B (en) | 2015-05-13 | 2015-05-13 | The shearing resistance reinforcement structure of girder steel |
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| CN104878879B CN104878879B (en) | 2017-06-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107130734A (en) * | 2017-04-30 | 2017-09-05 | 浙江大学宁波理工学院 | Corrugated plate dst Horizontal H-shaped structure beam and its construction method |
| CN107190876A (en) * | 2017-07-18 | 2017-09-22 | 西安交通大学 | A kind of Ripple Sternum buckling restrained brace |
| CN110016855A (en) * | 2019-03-15 | 2019-07-16 | 浙江大学宁波理工学院 | A kind of wave forms steel web mounting structure and its bridge |
| CN110792283A (en) * | 2019-11-13 | 2020-02-14 | 金陵科技学院 | Reinforcing apparatus after buckling of prefabricated wave steel beam web |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110016855A (en) * | 2019-03-15 | 2019-07-16 | 浙江大学宁波理工学院 | A kind of wave forms steel web mounting structure and its bridge |
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| CN110792283A (en) * | 2019-11-13 | 2020-02-14 | 金陵科技学院 | Reinforcing apparatus after buckling of prefabricated wave steel beam web |
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| CN104878879B (en) | 2017-06-13 |
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