CN212000586U - Beam falling prevention limiting device for continuous beam bridge steel structure - Google Patents
Beam falling prevention limiting device for continuous beam bridge steel structure Download PDFInfo
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- CN212000586U CN212000586U CN202020026004.8U CN202020026004U CN212000586U CN 212000586 U CN212000586 U CN 212000586U CN 202020026004 U CN202020026004 U CN 202020026004U CN 212000586 U CN212000586 U CN 212000586U
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Abstract
A steel structure anti-falling beam limiting device for a continuous beam bridge belongs to the technical field of bridge construction. It includes the spacing subassembly of the roof beam body, pier stud and a plurality of group connection roof beam body and pier stud, the lateral wall of pier stud is provided with the steel sheet hoop all around, the steel sheet hoop passes through fixing bolt and is connected with the pier stud anchor, the lateral wall symmetry fixed mounting of steel sheet hoop has four A steel sheets, spacing subassembly passes through the A steel sheet and hoops fixed connection with the roof beam body and steel sheet, it has a plurality of U-shaped anchor muscle to implant in the roof beam body. The utility model discloses a set up the vertical bridge to and the horizontal bridge to spacing subassembly, utilize the connection of spacing subassembly and the internal U-shaped anchor bar of roof beam and steel sheet, the fixing bolt on the pier and the A steel sheet to become a whole, under the change of temperature rise and fall temperature, freely release and warp, at big displacement state, played limiting displacement, guaranteed the free flexible of continuous bridge difference in temperature promptly, also guaranteed that the roof beam body receives under the exogenic action, play two-way external the turning round of restricting the roof beam body effectively and climb and move.
Description
Technical Field
The utility model belongs to the technical field of the bridge construction, concretely relates to girder stop device is prevented falling by continuous beam bridge steel construction.
Background
The cast-in-place box girder column type bridge pier has the advantages of light structure, wide visual field, easiness in adapting to terrain, land occupation saving, attractive appearance and the like, and is widely applied to bridge construction, particularly to ramp bridges and overpasses; however, because the transverse rigidity of the cast-in-place box beam column type pier is weak, especially for a curved bridge, under the accidental loads of automobile load centrifugal force, overload unbalance loading or earthquake, the phenomena of beam body lateral displacement, support deviation and the like occur, and even the safety accident of bridge overturning instability is caused.
Synthesize many-sided factors such as economic type, feasibility, technical difficulty degree, construction cycle, the utility model provides a continuous beam bridge steel construction prevents falling roof beam stop device effectively restricts the roof beam and turns round outward and climb and move, improves its roof beam body anti-sidesway and moves, antidumping performance and durability, extension bridge life avoids casualties and economic loss because of the overturning arouses.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem that exists among the prior art, the utility model aims to provide a can improve the antidumping performance and the durability of bridge, the stop device of simple and convenient, the job stabilization of construction to the bridge floor not damaged is provided.
The utility model provides a following technical scheme: a steel structure anti-falling beam limiting device for a continuous beam bridge comprises a beam body, a pier stud and a plurality of groups of limiting assemblies for connecting the beam body and the pier stud, wherein steel plate hoops are arranged on the periphery of the outer side wall of the pier stud and are in anchoring connection with the pier stud through fixing bolts, four A steel plates are symmetrically and fixedly installed on the outer side wall of each steel plate hoop, the beam body and the steel plate hoops are fixedly connected through the A steel plates by the limiting assemblies, and a plurality of U-shaped anchor bars are implanted in the beam body;
every group spacing subassembly includes two B steel sheets, C steel sheet and D steel sheet, the bottom surface of D steel sheet flushes with the bottom surface of the roof beam body to with U-shaped anchor bar fixed connection, C steel sheet fixed mounting is at the lower extreme of D steel sheet, two B steel sheet symmetry vertical welding fixes the lower extreme at the C steel sheet, the lower extreme of two B steel sheets passes through fastening bolt to be fixed in the left and right sides of A steel sheet.
Preferably, the steel plate hoop is of a closed structure.
Preferably, the A steel plate is welded in the middle of the outer side wall of the steel plate hoop in a fillet welding mode, and the left side and the right side of the steel plate hoop are provided with a plurality of fixing bolts which are evenly distributed along the A steel plate in a symmetrical mode.
Preferably, the D steel plate and the U-shaped anchor bars are connected through double-side welding, and the length of the welding line is not less than 5 times of the diameter value of the U-shaped anchor bars.
Preferably, the C steel plate and the D steel plate are welded and fixed through fillet welding, and the centers of the C steel plate and the D steel plate are aligned.
Preferably, bolt through holes are formed in the steel plate A and the steel plate B.
Preferably, the steel plate hoop and the pier stud are anchored by bolts in one of planting foundation bolts or embedded bolts
Through adopting above-mentioned technique, compare with prior art, the beneficial effects of the utility model are as follows:
the utility model discloses a set up the spacing subassembly of longitudinal and transverse bridge, utilize the spacing subassembly and the internal U-shaped anchor bar of roof beam and steel sheet, the connection of the fixing bolt on the pier and A steel sheet to form a whole, under the change of temperature rise and fall temperature, free release warp, in big displacement state, played the limiting displacement, guaranteed the free flexible of continuous bridge difference in temperature promptly, also guaranteed the roof beam body and received under the exogenic action, played two-wayly effectively and restricted the external torsion and creep of the roof beam body, improve its roof beam body and move, anti-side, anti-overturning performance and durability, prolong bridge life, avoid the casualties and economic loss because of overturning and arouse; and the whole device has the advantages of simple and convenient construction process, short construction period, low cost and small occupied area, is suitable for reinforcing the anti-falling beam of the bridge, newly-built box girder structure bridges, large-scale bridge wind-resistant supports and the like, and has great practical popularization value and higher economic and social benefits.
Drawings
Fig. 1 is a schematic structural view of a cross bridge vertical surface of the present invention;
fig. 2 is the structural schematic diagram of the steel plate hoop of the present invention.
In the figure: 1. a steel plate hoop; 2. fixing the bolt; 3. fastening a bolt; 4. u-shaped anchor bars; 5. a, steel plate; 6. b, steel plate; 7. c, steel plates; 8. d, steel plate; 9. pier studs; 10. a beam body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments of the specification. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in order to provide a better understanding of the present invention to the public, certain specific details are set forth in the following detailed description of the invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details.
Referring to fig. 1-2, a continuous beam bridge steel structure anti-falling beam limiting device includes a beam body 10, a pier stud 9 and a plurality of sets of limiting components connecting the beam body 10 and the pier stud 9, and is characterized in that: the steel plate hoops 1 are arranged on the periphery of the outer side wall of the pier stud 9, the steel plate hoops 1 are in anchoring connection with the pier stud 9 through fixing bolts 2, four A steel plates 5 are symmetrically and fixedly installed on the outer side wall of each steel plate hoop 1, the limiting assembly fixedly connects the beam body 10 and the steel plate hoops 1 through the A steel plates 5, and a plurality of U-shaped anchor bars 4 are implanted in the beam body 10;
every spacing subassembly of group includes two B steel sheets 6, C steel sheet 7 and D steel sheet 8, and the bottom surface of D steel sheet 8 flushes with the bottom surface of roof beam body 10 to with 4 fixed connection of U-shaped anchor bars, 7 fixed mounting of C steel sheet are at the lower extreme of D steel sheet 8, and 6 symmetrical perpendicular welded fastening of two B steel sheets are at the lower extreme of C steel sheet 7, and the lower extreme of two B steel sheets 6 passes through fastening bolt 3 to be fixed in the left and right sides of A steel sheet 5.
The steel plate hoop 1 is of a closed structure.
A steel sheet 5 adopts fillet weld welding at the middle part of steel sheet hoop 1 lateral wall all around, and a plurality of fixing bolt 2 in the left and right sides evenly arranges along A steel sheet 5 symmetry.
The D steel plate 8 and the U-shaped anchor bar 4 are connected by welding through double-sided welding, and the length of a welding line is not less than 5 times of the diameter value of the U-shaped anchor bar 4.
The C steel plate 7 and the D steel plate 8 are welded and fixed through fillet welding, and the centers of the C steel plate 7 and the D steel plate 8 are aligned.
Bolt through holes are formed in the steel plate A5 and the steel plate B6.
The bolt anchoring mode between the steel plate hoop 1 and the pier stud 9 is one of planting foundation bolts or pre-buried bolts.
The utility model discloses when the construction preparation, the main construction technical scheme of taking has:
example 1:
the device determines the steel plate hoop and parameters of each steel plate according to actual construction site lofting, wherein the thickness of the steel plate hoop 1 and the thickness of the steel plate A5 are 10mm, the thickness of the steel plate B6, the thickness of the steel plate C7 and the thickness of the steel plate D8 are 20mm, the aperture of the through hole of the steel plate A5 is 40mm larger than that of the through hole of the steel plate B6, the aperture of the through hole of the steel plate B6 is 5-6mm larger than that of the fastening bolt 3, and after the steel plate hoop 1 and each steel plate are manufactured, iron rust oil stains on the surface.
2) 24 fixing bolts 2 and 4 fastening bolts 3 are prepared for each pier stud, and the strength of the fixing bolts 2 is ensured to be greater than M20, and the strength of the fastening bolts 3 is ensured to be greater than M24.
3) The exposed surfaces of each steel plate, the steel plate hoop 1, the bolt and the like are coated with antirust paint twice, and the surface layer is coated with two layers of epoxy zinc-rich finish paint, and the thickness of the epoxy zinc-rich finish paint is 50 microns in total.
4) Enclose all around to establish steel sheet hoop 1 at pier stud 9 seals, highly down 800mm from the pier top, and steel sheet hoop 1 upper half section is connected with pier stud 9 anchor through controlling each 3 fixing bolt 2.
5) A steel plate 5 is welded by fillet welding at four points of the transverse direction and the forward direction of the steel plate hoop 1, the distance between the A steel plate 5 and the pier top can be properly adjusted according to the longitudinal slope during construction, the temperature is prevented from being too high during welding, and the welded part is subjected to rust prevention treatment after welding.
6) Chiseling a required placing area of the D-shaped steel plate 8 at the corresponding position of the bottom surface of the beam body 10, roughening the D-shaped steel plate by using a small grinding wheel, brushing floating slurry on the surface by using an iron wire brush, washing the chiseled surface by using water until the chiseled surface is clean and free of dirt, and wiping off accumulated water by using a towel. 3U-shaped anchor bars 4 are implanted above the corresponding positions, the number of the U-shaped anchor bars is 12, the D steel plate 8 and the U-shaped anchor bars 4 in the beam body 10 are connected through double-sided welding, the length of a welding line is not less than 5 times of the diameter of the anchor bars, and the D steel plate 8 is enabled to be flush with the bottom of the beam.
7) And the top surface of the C steel plate 7 and the bottom surface of the D steel plate 8 are welded by fillet welding, so that the center alignment is ensured, and the stress is uniform.
8) And (3) welding the upper ends of the two 2 steel plates 6 to the bottom surface of the C steel plate 7 in a symmetrical and vertical fillet welding manner, symmetrically fixing the lower ends of the two steel plates to the left side and the right side of the A steel plate 5 by using the fastening bolts 3, and screwing the fastening bolts 3.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a girder stop device is prevented falling by continuous beam bridge steel construction, includes the spacing subassembly of the roof beam body (10), pier stud (9) and a plurality of groups connection roof beam body (10) and pier stud (9), its characterized in that: the steel plate hoops (1) are arranged on the periphery of the outer side wall of the pier column (9), the steel plate hoops (1) are connected with the pier column (9) in an anchoring mode through fixing bolts (2), four A steel plates (5) are symmetrically and fixedly installed on the outer side wall of the steel plate hoops (1), the limiting assembly fixedly connects the beam body (10) and the steel plate hoops (1) through the A steel plates (5), and a plurality of U-shaped anchor bars (4) are implanted into the beam body (10);
every group spacing subassembly includes two B steel sheets (6), C steel sheet (7) and D steel sheet (8), the bottom surface of D steel sheet (8) flushes with the bottom surface of roof beam body (10) to with U-shaped anchor bar (4) fixed connection, C steel sheet (7) fixed mounting is at the lower extreme of D steel sheet (8), and two perpendicular welded fastening of B steel sheet (6) symmetry are at the lower extreme of C steel sheet (7), the left and right sides at A steel sheet (5) is fixed through fastening bolt (3) to the lower extreme of two B steel sheets (6).
2. The continuous beam bridge steel structure girder falling prevention limiting device as claimed in claim 1, wherein the steel plate hoop (1) is a closed structure.
3. The continuous beam bridge steel structure girder falling prevention limiting device as claimed in claim 1, wherein the A steel plate (5) is welded in the middle of the peripheral outer side wall of the steel plate hoop (1) by fillet welding, and a plurality of the fixing bolts (2) on the left and right sides are symmetrically and uniformly distributed along the A steel plate (5).
4. The continuous beam bridge steel structure girder falling prevention limiting device of claim 1, wherein the D-shaped steel plate (8) and the U-shaped anchor bars (4) are connected by double-sided welding, and the length of the welding line is not less than 5 times of the diameter value of the U-shaped anchor bars (4).
5. The continuous beam bridge steel structure girder falling prevention limiting device as claimed in claim 1, wherein the C steel plate (7) and the D steel plate (8) are fixed by fillet welding, and centers of the C steel plate (7) and the D steel plate (8) are aligned.
6. The continuous beam bridge steel structure girder falling prevention limiting device as claimed in claim 1, wherein the A steel plate (5) and the B steel plate (6) are both provided with bolt through holes.
7. The continuous beam bridge steel structure girder falling prevention limiting device as claimed in claim 1, wherein the steel plate hoop (1) and the pier stud (9) are anchored by bolts in one of a ground bolt or a pre-embedded bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020026004.8U CN212000586U (en) | 2020-01-07 | 2020-01-07 | Beam falling prevention limiting device for continuous beam bridge steel structure |
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| CN202020026004.8U CN212000586U (en) | 2020-01-07 | 2020-01-07 | Beam falling prevention limiting device for continuous beam bridge steel structure |
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| CN212000586U true CN212000586U (en) | 2020-11-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235463A (en) * | 2021-05-12 | 2021-08-10 | 山西省交通科技研发有限公司 | Self-locking creeping limiting method for curved bridge |
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2020
- 2020-01-07 CN CN202020026004.8U patent/CN212000586U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235463A (en) * | 2021-05-12 | 2021-08-10 | 山西省交通科技研发有限公司 | Self-locking creeping limiting method for curved bridge |
| CN113235463B (en) * | 2021-05-12 | 2022-12-13 | 山西省交通新技术发展有限公司 | Self-locking creeping limiting method for curved bridge |
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