CN217710286U - Combined corrugated steel web - Google Patents
Combined corrugated steel web Download PDFInfo
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- CN217710286U CN217710286U CN202222054977.4U CN202222054977U CN217710286U CN 217710286 U CN217710286 U CN 217710286U CN 202222054977 U CN202222054977 U CN 202222054977U CN 217710286 U CN217710286 U CN 217710286U
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Abstract
The utility model discloses a combination wave form steel web belongs to bridge engineering technical field. The combined corrugated steel web plate comprises a plurality of circulating sections which are fixedly connected end to end in the cross section direction, and each circulating section comprises a first unit body and a second unit body which are fixedly connected with each other; first cell cube includes first crest board, first trough board, first left side board and the first right side board that length, thickness are the same, and first crest board is parallel with first trough board, and first crest board passes through first left side board fixed connection with first trough board, the first right side board of first crest board fixed connection, and first left side board and first right side board become the splayed. Compared with the buckling characteristic value of the corrugated steel web plate of the existing type, the buckling characteristic value of the combined corrugated steel web plate is the largest, the buckling resistance is the best, the shearing buckling strength is the largest, the problem that the buckling resistance of the existing corrugated steel web plate is insufficient can be solved, and the stability of the corrugated steel web plate combined beam is improved.
Description
Technical Field
The utility model relates to a bridge engineering technical field, concretely relates to combination wave form steel web.
Background
In the 90 s of the 20 th century, a corrugated steel web PC composite beam bridge is introduced into China as a novel composite structure bridge. The composite structure bridge has the advantages of light dead weight, high prestress efficiency and the like, and through development of nearly 30 years, the corrugated steel web PC composite bridge is widely applied to actual engineering. The corrugated steel web plate combined box girder bridge mainly comprises a concrete top bottom plate, a corrugated steel web plate and prestressed tendons. In the bridge, the corrugated steel web mainly bears the shearing force of the section and does not bear the bending moment of the section, so the ultimate bearing capacity of the bridge is closely related to the buckling resistance of the corrugated steel web. At present, in the design of the corrugated steel web PC combined bridge, the type of the corrugated steel web is mainly 1600, and the types of the corrugated steel web PC combined bridge are 1000, 1200 and 900 in the early stage. At present, 2000 type corrugated steel webs and 2400 type are also available, and it can be seen that the existing corrugated steel web models cannot meet the development requirements of the composite structural bridge.
With the continuous improvement of the design level of the corrugated steel web PC composite bridge, the span of the corrugated steel web PC composite bridge is continuously broken through. In the process, the buckling resistance of the corrugated steel web of the original type is insufficient, and the height of the steel web at the root of the composite beam bridge is increased along with the continuous increase of the span, so that the stability of the corrugated steel web of the composite beam is caused. In order to solve the problem, the buckling problem of the corrugated steel web is solved by fixedly connecting the diaphragm plates and the like in actual engineering, but the problem cannot be solved essentially, and the wrinkling effect of the structure is adversely affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the problem among the prior art, provide a combination wave form steel web.
The utility model provides a combined corrugated steel web plate, which comprises a plurality of circulation sections which are fixedly connected end to end in the cross section direction, wherein each circulation section comprises a first unit body and a second unit body which are fixedly connected with each other; the first unit body comprises a first wave crest plate, a first wave trough plate, a first left side plate and a first right side plate, the first wave crest plate and the first wave trough plate are all the same in length and thickness, the first wave crest plate is parallel to the first wave trough plate, the first wave crest plate and the first wave trough plate are fixedly connected through a first left side plate, the first wave crest plate is fixedly connected with a first right side plate, and the first left side plate and the first right side plate are splayed; the second unit body has the same structure as the first unit body, the thicknesses of the plate bodies of the second unit body are the same as those of the plate bodies of the first unit body, and the lengths of the plate bodies of the second unit body are larger than those of the plate bodies of the first unit body corresponding to the second unit body.
Preferably, the plate bodies forming the second unit body are respectively a second wave crest plate, a second wave trough plate, a second left side plate and a second right side plate, and the end part of the second wave trough plate is fixedly connected with the end part of the first right side plate far away from the first wave crest plate.
Preferably, the first and second valley plates are coplanar.
Preferably, the first trough plate and the first left side plate form an angle α, the first trough plate and the first right side plate form an angle α, and a range of the angle α is 135 ° to 155 °.
Preferably, the first left side plate and the first right side plate are symmetrically arranged about the first peak plate.
Preferably, a fillet with the radius of R is arranged at the joint of the first wave trough plate and the first left side plate, a fillet with the radius of R is arranged at the joint of the first wave trough plate and the first right side plate, and R is greater than or equal to 16 times the thickness of the first wave peak plate and less than 18 times the thickness of the first wave peak plate.
Preferably, the circulation section further comprises two first unit bodies and a second unit body which are fixedly connected in sequence, and the second unit body is arranged between the two first unit bodies.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the first unit body and the second unit body in the combined corrugated steel web plate are jointly used as a circulation section, a plurality of circulation sections are sequentially and fixedly connected end to form the combined corrugated steel web plate, the combined corrugated steel web plate is compared with the buckling characteristic value of the existing type corrugated steel web plate, the buckling characteristic value of the combined corrugated steel web plate is maximum, the buckling resistance of the combined corrugated steel web plate is best, namely the shearing buckling strength of the combined corrugated steel web plate is maximum, the problem of insufficient buckling resistance of the existing corrugated steel web plate can be overcome, and the stability of the corrugated steel web plate combined beam is improved;
2. the combined corrugated steel web can improve the shearing buckling performance of the corrugated steel web, solves the buckling phenomenon of the web in the actual bridge engineering, and has outstanding torsion resistance;
3. the torsion resistance of the section of the corrugated steel web PC composite beam bridge can be effectively improved, and the configuration of the diaphragm plate can be properly reduced in the structural design, so that the purpose of saving materials is achieved;
4. the utility model discloses it is more nimble to the actual construction of wave form steel web body. Because the combination of the corrugated steel webs is realized by combining webs with different wavelengths, the length of each segment can be freely defined in the cantilever construction process, the length of the segment does not need to be determined according to the wavelength limit value of the corrugated steel webs, and the construction is more flexible.
Drawings
Fig. 1 is a top view of a circulation joint formed by a first unit body and a second unit body of the present invention;
fig. 2 is a perspective view of the plurality of circulation segments of fig. 1 according to the present invention;
FIG. 3 shows buckling characteristic values of a 1000-type corrugated steel web;
FIG. 4 shows buckling characteristic values of a 1600-type corrugated steel web;
fig. 5 shows the buckling characteristic value of the composite corrugated steel web of the present invention;
fig. 6 is a perspective view of a circulation section formed by two first unit bodies and one second unit body according to the present invention.
Description of reference numerals:
1. the structure comprises a first wave trough plate, a first left side plate, a first wave crest plate, a first right side plate, a second wave trough plate, a second left side plate, a second wave crest plate and a second right side plate, wherein the first wave trough plate is 2, the first left side plate is 3, the first wave crest plate is 4, the second right side plate is 5, the second wave trough plate is 6, the second left side plate is 7, the second wave crest plate is 8, and the second right side plate is 8.
Detailed Description
The following detailed description of the embodiments of the present invention is provided, but it should be understood that the scope of the present invention is not limited by the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides a combined corrugated steel web, as shown in fig. 1-2, comprising a plurality of circulation sections which are fixedly connected end to end in the cross section direction, wherein each circulation section comprises a first unit body and a second unit body which are fixedly connected with each other; the first unit body comprises a first wave crest plate 3, a first wave trough plate 1, a first left side plate 2 and a first right side plate 4 which are the same in length and thickness, the first wave crest plate 3 is parallel to the first wave trough plate 1, the first wave crest plate 3 is fixedly connected with the first wave trough plate 1 through the first left side plate 2, the first wave crest plate 3 is fixedly connected with the first right side plate 4, and the first left side plate 2 and the first right side plate 4 are in a splayed shape; the second unit body and the first unit body are identical in structure, the thickness of each plate body of the second unit body is identical to that of each plate body of the first unit body, and the length of each plate body of the second unit body is larger than that of each plate body of the corresponding first unit body.
The first unit body and the second unit body are jointly used as a circulation section, the circulation sections are sequentially and fixedly connected end to form a combined corrugated steel web plate, as shown in fig. 2, the first unit body is a 1000-type corrugated steel web plate, the second unit body is a 1600-type corrugated steel web plate, the 1000-type corrugated steel web plate and the 1600-type corrugated steel web plate are combined to form the combined corrugated steel web plate, and in finite element analysis, when the 1000-type corrugated steel web plate, the 1600-type corrugated steel web plate and the combined corrugated steel web plate are subjected to a vertical 1000kN shear load as shown in fig. 2, the buckling characteristic value of the 1000-type corrugated steel web plate is 168.975 (as shown in fig. 3), the buckling characteristic value of the 1600-type corrugated steel web plate is 171.432 (as shown in fig. 4) and the vertical height is 11.2m respectively, the buckling characteristic value of the combined corrugated steel web plate is 180.654 (as shown in fig. 5), the buckling characteristic values of the combined corrugated steel web plate and the combined corrugated steel web plate are compared with the existing corrugated steel web plates in the existing model, the maximum buckling resistance of the combined corrugated steel web plate is good, and the combined corrugated steel web plate can overcome the problem that the maximum buckling resistance of the existing corrugated steel web plate, namely the shear corrugated steel web plate is not enough.
Preferably, the plate bodies constituting the second unit body are a second peak plate 7, a second valley plate 5, a second left side plate 6 and a second right side plate 8, respectively, and the end of the second valley plate 5 is fixedly connected with the end of the first right side plate 4 far away from the first peak plate 3.
Preferably, the first and second valley plates 1, 5 are coplanar.
Preferably, an angle α is formed between the first trough plate 1 and the first left side plate 2, an angle α is formed between the first trough plate 3 and the first right side plate 4, and a value range of the angle α is 135 ° to 155 °.
Preferably, the first left side plate 2 and the first right side plate 4 are symmetrically disposed about the first peak plate 3.
Preferably, the joint of the first wave trough plate 1 and the first left side plate 2 is provided with a round corner with a radius of R, the joint of the first wave trough plate 3 and the first right side plate 4 is provided with a round corner with a radius of R, and R is greater than or equal to 16 times of the thickness of the first wave trough plate 3 and is less than 18 times of the thickness of the first wave trough plate 3.
Preferably, the circulation section further includes two first unit bodies and a second unit body, which are sequentially and fixedly connected, and the second unit body is disposed between the two first unit bodies.
As another embodiment, the combined corrugated steel web plate can also be formed by fixedly connecting the first unit body, the second unit body and the first unit body with each other in sequence, and as a circulating section, fixedly connecting a plurality of circulating sections end to end.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The combined corrugated steel web is characterized by comprising a plurality of circulating sections which are fixedly connected end to end in the cross section direction, wherein each circulating section comprises a first unit body and a second unit body which are fixedly connected with each other;
the first unit body comprises a first wave crest plate (3), a first wave trough plate (1), a first left side plate (2) and a first right side plate (4), wherein the first wave crest plate (3) is parallel to the first wave trough plate (1), the first wave crest plate (3) is fixedly connected with the first wave trough plate (1) through the first left side plate (2), the first wave crest plate (3) is fixedly connected with the first right side plate (4), and the first left side plate (2) and the first right side plate (4) are splayed;
the second unit body has the same structure as the first unit body, the thicknesses of the plate bodies of the second unit body are the same as those of the plate bodies of the first unit body, and the lengths of the plate bodies of the second unit body are larger than those of the plate bodies of the first unit body corresponding to the second unit body.
2. The composite corrugated steel web according to claim 1, wherein the second unit body is composed of a second crest plate (7), a second trough plate (5), a second left side plate (6) and a second right side plate (8), and the end of the second trough plate (5) is fixedly connected to the end of the first right side plate (4) far away from the first crest plate (3).
3. The composite corrugated steel web according to claim 2, wherein the first valley plate (1) is coplanar with the second valley plate (5).
4. The composite corrugated steel web according to claim 1, wherein the first valley plate (1) forms an angle α with the first left side plate (2), the first peak plate (3) forms an angle α with the first right side plate (4), and the angle α has a value in a range of 135 ° to 155 °.
5. The composite corrugated steel web according to claim 1, wherein the first left side plate (2) and the first right side plate (4) are symmetrically arranged with respect to the first crest plate (3).
6. The composite corrugated steel web according to claim 1, wherein the joint of the first valley plate (1) and the first left side plate (2) is provided with a fillet having a radius R, the joint of the first valley plate (3) and the first right side plate (4) is provided with a fillet having a radius R, and R is greater than or equal to 16 times the thickness of the first valley plate (3) and less than 18 times the thickness of the first valley plate (3).
7. The composite corrugated steel web according to claim 1, wherein the circulation joint further comprises two first unit bodies and one second unit body fixedly connected in sequence, and the second unit body is disposed between the two first unit bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222054977.4U CN217710286U (en) | 2022-08-05 | 2022-08-05 | Combined corrugated steel web |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222054977.4U CN217710286U (en) | 2022-08-05 | 2022-08-05 | Combined corrugated steel web |
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| Publication Number | Publication Date |
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| CN217710286U true CN217710286U (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222054977.4U Active CN217710286U (en) | 2022-08-05 | 2022-08-05 | Combined corrugated steel web |
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| CN (1) | CN217710286U (en) |
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2022
- 2022-08-05 CN CN202222054977.4U patent/CN217710286U/en active Active
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