CN111827106A - Anti-resonance device for steel-concrete composite bridge - Google Patents
Anti-resonance device for steel-concrete composite bridge Download PDFInfo
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- CN111827106A CN111827106A CN202010772512.5A CN202010772512A CN111827106A CN 111827106 A CN111827106 A CN 111827106A CN 202010772512 A CN202010772512 A CN 202010772512A CN 111827106 A CN111827106 A CN 111827106A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/067—Flat continuous joints cast in situ
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention discloses an anti-resonance device for a steel-concrete composite bridge, which relates to the field of composite bridges and comprises bridge panels and an expansion joint body arranged between the two bridge panels, wherein the expansion joint body is formed by welding two steel pieces through the bottoms of the two steel pieces, a plurality of welding pieces are connected between the middle parts of the steel pieces, a buffer assembly is connected between the outer side walls of the two steel pieces, a plurality of steel bar inserting rods corresponding to inner cylinder seats are welded on the outer side walls of the two steel pieces, and the steel bar inserting rods are inserted into the inner cylinder seats pre-cast on the side walls of the bridge panels. When the expansion joint body is installed, the steel bar insertion rod welded on the outer side wall of the steel piece is inserted into the filling inner cavity formed in the inner cylinder seat, when the steel bar insertion rod is completely inserted into the inner cylinder seat, the lower end of the elastic nail is matched and clamped in the limiting hole under the elastic force action of the compression spring, the steel bar insertion rod is preliminarily clamped and limited, the steel bar insertion rod is prevented from being separated, and butt joint installation is convenient.
Description
Technical Field
The invention relates to the field of composite bridges, in particular to an anti-resonance device for a steel-concrete composite bridge.
Background
The resonance problem is considered on the ground of the steel-concrete composite bridge construction, the vibration problem caused by pedestrian and vehicle passing through the bridge needs to be considered, the bridge vibrates under the influence of external force, and the vibration frequency is equivalent to the natural frequency of the bridge material, so that the resonance of the bridge is caused, the amplitude is greatly increased, and the risk that the bridge collapses and breaks due to vibration is increased.
In the traditional steel-concrete combined bridge building process, expansion joints are installed between bridge panels to achieve the anti-resonance effect. The structure of the driven bridge expansion joint is simple, and the expansion performance is relatively general; and need dare with the embedded bar of both sides and the inside embedded bar of bridge panel and connect when traditional bridge expansion joint installation, it is comparatively inconvenient to install.
Disclosure of Invention
The present invention is directed to a resonance preventing apparatus for a steel-concrete composite bridge, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: an anti-resonance device for a steel-concrete composite bridge comprises bridge panels and an expansion joint body arranged between the two bridge panels, wherein the expansion joint body is formed by welding a plurality of welding parts on two steel parts through the bottom, a buffer component is connected between the middle parts of the two steel parts, a cover plate is connected between the upper ends of the two steel parts, a plurality of inner barrel seats are pre-cast on the side wall of the bridge panels along the section length of the side wall, a plurality of steel bar inserting rods corresponding to the inner barrel seats are welded on the outer side walls of the two steel parts, the steel bar inserting rods are inserted in filling inner cavities formed in the inner barrel seats, the buffer component comprises a sliding steel bar which is in clamping and embedding sliding connection with the inner side wall in the middle part of the steel part, a plurality of buffer rod pieces are connected between the two sliding steel bars, and the buffer rod pieces connected between the two sliding steel bars comprise a first sleeve and a first telescopic rod connected with, the tip of the first telescopic link that first sleeve both ends are connected is respectively with two smooth billet welded fastening, is connected with first damping spring between the inner of two first telescopic links, the inner top integrated into one piece of interior cylinder base has bullet nail seat, and the bullet chamber has been seted up to bullet nail seat inside, is equipped with the bullet nail that runs through perpendicularly to filling the inner chamber in the bullet chamber, is connected with compression spring between the upper end of bullet nail and the bullet chamber top, and spacing hole has been seted up to the position that the tip of reinforcing bar inserted bar corresponds the bullet nail, and the lower extreme of bullet nail matches and suits to block to establish in spacing hole, the welding of the upper portion of interior cylinder base has grout joint and the mud pipe that is linked together with filling the inner chamber, and the surface of bridge panel is run through out to the upper end of grout joint, mud pipe, and the surface of bridge panel flushes mutually.
Preferably, the welding parts comprise an upper welding part and a lower welding part, a second spring is connected between the upper welding part and the lower welding part, a notch is arranged on one side of the upper welding part facing the lower welding part, a bulge corresponding to the notch is arranged on one side of the lower welding part corresponding to the notch, a second sleeve is arranged between the upper welding piece and the first sleeve, a third spring is connected between the second sleeve and the first sleeve, a second damping spring is arranged in the second sleeve, two ends of the second damping spring are respectively connected with a second telescopic rod, the outer side of the second telescopic rod is connected with a connecting rod, the position of the steel piece corresponding to the connecting rod is provided with a through hole, the bridge panel corresponds the position of connecting rod is provided with the recess, the connecting rod runs through the through-hole and inserts in the recess, the vertical length of recess is greater than the diameter of connecting rod.
Preferably, the material of the projection is more rigid than the lower weldment and the material of the lower weldment is more rigid than the material of the upper weldment.
Preferably, the cover plate is formed by horizontally arranging a plurality of cover plate steel bars, a convex strip is integrally formed on one side of each cover plate steel bar, and the convex strip arranged on one side of each cover plate steel bar is embedded and clamped in the adjacent cover plate steel bars.
The invention has the technical effects and advantages that:
1. when the expansion joint body is installed, the steel bar insertion rod welded on the outer side wall of the steel piece is inserted into the filling inner cavity formed in the inner cylinder seat, when the steel bar insertion rod is completely inserted into the inner cylinder seat, the lower end of the elastic nail is matched and properly clamped in the limiting hole under the elastic action of the compression spring, the steel bar insertion rod is preliminarily clamped and limited, the steel bar insertion rod is prevented from being separated, and butt joint installation is convenient;
2. according to the invention, through the existing grouting equipment, the concrete slurry is poured along the grouting joint to fill the filling cavity with the concrete slurry, until the concrete overflows along the slurry discharge pipe, grouting is stopped, and after the concrete slurry is solidified, the structural connection strength between the steel bar inserted bar and the inner cylinder seat is enhanced, so that the operation is simpler and more convenient than electric welding connection operation, and the working efficiency is effectively improved;
3. the expansion joint body is formed by welding two steel pieces through the bottom of the expansion joint body, a plurality of welding pieces are welded between the middle parts of the two steel pieces, the buffer assembly comprises sliding steel bars in clamping and embedding sliding connection with the inner side wall of the middle part of the steel piece, a plurality of groups of buffer rod pieces are connected between the two sliding steel bars, and when the two steel pieces vibrate and deform correspondingly, a first damping spring in each buffer rod piece is used for playing a buffer role.
4. The invention enables the buffering effect in the vertical direction to be optimal by matching the first to third springs, the upper and lower welding parts, the second sleeve, the second damping spring, the second telescopic rod, the connecting rod, the groove, the notch, the bulge and the like with the buffering assembly, can only perform enough buffering by upper welding when the vertical pressure is small, enables the two ends of the upper welding part to be substantially lifted by the deformation of the upper welding part when the downward buffering effect of the upper welding part is insufficient, drives the second spring to be lifted, so that the distance of the middle position is reduced, the notch and the bulge can be embedded, enables the upper welding part to still deform during embedding because the size of the notch is larger than the size (width) of the bulge, and enables the deformation to be limited by the bulge when the inner side of the notch is close to the two bulges, thereby realizing the matching of the upper and lower welding parts and the structures, the optimal vertical buffering is realized, and the vertical buffering is further realized by matching the effect of the groove, the first spring and the connecting rod.
Drawings
Fig. 1 is a schematic perspective view 1 of the present invention.
Fig. 2 is a schematic perspective view of the present invention 2.
Fig. 3 is a side cross-sectional view of the inventive structure.
Fig. 4 is an enlarged view of a portion a in fig. 3.
FIG. 5 is an enlarged view of the embodiment of the present invention.
In the figure: 1. a bridge deck; 2. a steel part; 3. a welding part; 4. a buffer assembly; 5. a cover plate; 51. a cover plate steel bar; 52. a convex strip; 6. inserting a steel bar into the rod; 7. an inner cylinder seat; 71. filling the inner cavity; 8. sliding the steel bar; 9. a first telescopic rod; 10. a first sleeve; 11. a first damping spring; 12. grouting joints; 121. a slurry discharge pipe; 13. a nail ejection seat; 14. elastic nails; 15. a compression spring; 16. a second sleeve; 17. a second damping spring; 18. a second telescopic rod; 19. a connecting rod; 20. a groove; 21. a first spring; 22. an upper welding part; 23. a lower welding part; 24. a second spring; 25. a notch; 26. a protrusion; 27. and a third spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an anti-resonance device for a steel-concrete composite bridge as shown in figures 1-4, which comprises bridge panels 1 and an expansion joint body arranged between the two bridge panels 1, and is combined with figures 1 and 3, the expansion joint body is formed by welding a plurality of welding parts 3 on two steel pieces 2 through the bottoms of the two steel pieces 2, a buffer assembly 4 is connected between the middle parts of the two steel pieces 2, the buffer assembly 4 comprises sliding steel bars 8 in clamping and embedding sliding connection with the inner side walls of the middle parts of the steel pieces 2, a plurality of groups of buffer rod pieces are connected between the two sliding steel bars 8, the installation is convenient because the buffer assembly 4 is in sliding and clamping connection with the two steel pieces 2 through the two sliding steel bars 8, as shown in figure 3, the buffer rod pieces connected between the two sliding steel bars 8 comprise a first sleeve 10 and a first telescopic rod 9 in sliding connection with two ends of the first sleeve 10, the ends of the first telescopic rod 9 connected with two ends of the first sleeve 10 are respectively welded and fixed, be connected with first damping spring 11 between the inner of two first telescopic links 9, when vibrations take place corresponding deformation between two steel parts 2, first damping spring 11 is used for playing the cushioning effect.
Referring to fig. 2 and 3, a cover plate 5 is connected between the upper ends of two steel members 2, the cover plate 5 is used to cover the gap between the upper ends of the two steel members 2, wherein the cover plate 5 is formed by horizontally arranging a plurality of cover plate steel bars 51, a protruding strip 52 is integrally formed on one side of each cover plate steel bar 51, the protruding strip 52 arranged on one side of each cover plate steel bar 51 is embedded and clamped in the adjacent cover plate steel bar 51, and when the relative displacement between the upper ends of the two steel members 2 changes, the cover plate 5 can extend or contract accordingly.
Referring to fig. 1 and 2, a plurality of inner cylinder seats 7 are pre-cast on the side wall of the bridge deck 1 along the length of the cross section, a plurality of steel bar insertion rods 6 corresponding to the inner cylinder seats 7 are welded on the outer side walls of two steel pieces 2, when the expansion joint body is installed, the steel bar insertion rods 6 welded on the outer side walls of the steel pieces 2 are inserted into filling inner cavities 71 formed in the inner cylinder seats 7, as shown in fig. 3 and 4, elastic nail seats 13 are integrally formed above the inner ends of the inner cylinder seats 7, elastic cavities are formed in the elastic nail seats 13, elastic nails 14 vertically penetrating into the filling inner cavities 71 are arranged in the elastic cavities, compression springs 15 are connected between the upper ends of the elastic nails 14 and the tops of the elastic cavities, limit holes are formed in the positions, corresponding to the elastic nails 14, of the end portions of the steel bar insertion rods 6, and under the elastic force of the compression springs 15, the lower ends of the elastic nails 14 are properly inserted in the limit holes, carry out preliminary card to reinforcing bar inserted bar 6 and establish spacingly, prevent that reinforcing bar inserted bar 6 from deviating from.
Referring to fig. 2 and 4, the upper portion of the inner cylinder seat 7 is welded with a grouting joint 12 and a grout discharge pipe 121 which are communicated with the grouting cavity 71, the upper ends of the grouting joint 12 and the grout discharge pipe 121 penetrate through the surface of the bridge deck 1, the upper ends of the grouting joint 12 and the grout discharge pipe 121 are flush with the surface of the bridge deck 1, concrete grout is poured into the grouting joint 12 through the existing grouting equipment, the grouting cavity 71 is filled with the concrete grout, and the grouting is stopped until the concrete overflows along the grout discharge pipe 121, and after the concrete grout is solidified, the structural connection strength between the steel bar inserted bar 6 and the inner cylinder seat 7 is enhanced.
When the expansion joint body is installed, the steel bar inserting rod 6 welded on the outer side wall of the steel part 2 is inserted into the filling cavity 71 formed in the inner cylinder seat 7, as shown in fig. 4, when the steel bar inserting rod 6 is completely inserted into the inner cylinder seat 7, the lower end of the elastic nail 14 is matched and clamped in the limiting hole under the elastic force action of the compression spring 15, the steel bar inserting rod 6 is preliminarily clamped and limited, the steel bar inserting rod 6 is prevented from falling off, and the butt joint installation is convenient; then, the concrete grout is poured into the grouting joint 12 through the existing grouting equipment, so that the concrete grout is filled in the grouting inner cavity 71 until the concrete overflows along the grout discharge pipe 121, grouting is stopped, and after the concrete grout is solidified, the structural connection strength between the steel bar inserted link 6 and the inner cylinder seat 7 is enhanced, so that the operation is simpler and more convenient than electric welding connection operation, and the working efficiency is effectively improved; the expansion joint body is formed by welding two steel pieces 2 with a plurality of welding pieces 3 at the bottom, a buffer assembly 4 is connected between the middle parts of the two steel pieces 2, the buffer assembly 4 comprises sliding steel bars 8 which are in clamping and embedding sliding connection with the inner side walls of the middle parts of the steel pieces 2, a plurality of groups of buffer rod pieces are connected between the two sliding steel bars 8, and when the two steel pieces 2 vibrate and deform correspondingly, a first damping spring 11 in each buffer rod piece is used for playing a buffering role.
5. In practical application, the invention can well realize buffer and shock absorption in the horizontal direction and has certain shock absorption effect in the vertical direction, but in practical operation, as the bridge deck 1 is supported and actually buffered by the buffer component 4, under the existing environment, the density of the vehicle is extremely high, so that a large acting force is generated at the moment when the vehicle passes through the buffer component, on one hand, the acting force is removed by the buffer component in a shock absorption way, on the other hand, in the case of a heavy truck with large vehicle load, especially a heavy truck, the whole buffer component 4 and the welding strips 3 have great impact, the impact causes great loss or service life reduction of the whole device, and in the practical process, even if a car and the like pass through, the impact generated on the welding pieces 3 is also extremely high, and as the enough rigidity of the welding pieces is kept, so that it is significantly less effective in damping in the vertical direction than in the transverse direction, although the vehicle causes a continuous slight deformation of the weldment 3, particularly in the case of a specific vehicle density, which may cause a resonance in the weldment 3, which may be enough to cause severe damage, such as cracks, to the cushion assembly 4 and the weldment 3, leading to a great safety hazard, the inventor has determined that it is necessary to further improve the above-mentioned series of problems by specifically designing a solution in which the weldment 3 includes an upper weldment 22 and a lower weldment 23, a second spring 24 is connected between the upper and lower weldments, the upper weldment 22 is provided with a notch 25 on the side facing the lower weldment 23, a protrusion 26 corresponding to the notch 25 is provided on the lower weldment 23, and a second sleeve 16 is provided between the upper weldment 22 and the first sleeve 10, the second sleeve 16 with be connected with third spring 27 between the first sleeve 10, be provided with second damping spring 17 in the second sleeve 16, the both ends of second damping spring 17 are connected with second telescopic link 18 respectively, the second telescopic link 18 outside is connected with connecting rod 19, steel part 2 corresponds the position of connecting rod 19 is provided with the through-hole, bridge panel 1 corresponds the position of connecting rod is provided with recess 20, connecting rod 19 runs through the through-hole and inserts in the recess 20, the vertical length of recess 20 is greater than the diameter of connecting rod 19, protruding 26's material rigidity is greater than the rigidity of lower weldment 23, the rigidity of lower weldment 23 material is greater than the rigidity of upper weldment 22 material. In the above structure, since the welding parts include the upper and lower welding parts, and since the upper welding part 22 itself has a larger elasticity than the lower welding part 23, it is sufficient to perform buffering and shock absorption by the upper welding part 22 during a practical process, such as passing of a car, and in fact, during the passing of a vehicle, it is still completed in a vertical direction to a certain extent, that is, the distance between the whole steel parts 2 is reduced, and at the same time, the whole buffer assembly is bent downward to a certain extent, and the bending and recovery will cause frequent vibration, since the material of the upper welding part has a better elasticity than the lower welding part 23, so that the vibration is performed on the upper welding part, which will not crack, and at the same time, when a large impact is applied, it will be difficult for the upper welding part 22 to achieve better buffering and supporting, and when a bending occurs, since the second telescopic rod 18 is also connected to the connecting rod 19, the connecting rod 19 is connected with the first spring 21 in the groove 20, so that the first spring 21 can buffer the bending, the restoring force of the upper welding part 22 is larger due to the action of the first spring 21, the service life of the upper welding part 22 is prolonged, and in the vertical action, the third spring 27 can buffer the first sleeve and the second sleeve, so as to prevent the upper welding part and the second sleeve from approaching to each other and improve the vertical buffer force, when the buffer is insufficient, such as the heavy truck passes through, the whole buffer assembly is vertically and obviously bent, the bending can enable the upper welding part 22 to bend to a certain degree, the certain degree can be obtained through reasonable calculation, so that the upper welding part and the lower welding part approach to each other, and the bulge 26 can be embedded and matched with the notch 25, because of the notch size, the upper weldment 22 is still able to bend in some bending after insertion, but contact 26 begins on the inside of the bend to the notch (both sides between two projections 26 as shown in fig. 5), thus allowing adequate support and cushioning of the straight line by the lower weldment 23 of the higher stiffness projections 26. Therefore, the buffer assembly is matched through the first to third springs, the upper and lower welding parts, the second sleeve, the second damping spring, the second telescopic rod, the connecting rod, the groove, the notch, the bulge and the like, so that the buffer effect in the vertical direction is optimal, meanwhile, when the vertical pressure is small, enough buffer can be performed only through the upper welding, when the downward buffer effect of the upper welding part is insufficient, the two ends of the upper welding part are substantially lifted due to the deformation of the upper welding part, the second spring is driven to lift, the distance between the middle positions is reduced, the notch and the bulge can be embedded, the upper welding part can still deform during embedding due to the fact that the size of the notch is larger than the size (width) of the bulge, when the inner side of the notch is close to the two bulges, the deformation is limited by the bulge, and therefore, through the matching of the upper and lower welding parts and the structures, the optimal vertical buffering is realized, and the vertical buffering is further realized by matching the functions of the groove, the first spring and the connecting rod, which is another invention point of the invention.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (4)
1. The utility model provides an anti-resonance device for steel-mix combination bridge, includes bridge panels (1) and sets up the expansion joint body between two bridge panels (1), its characterized in that: the expansion joint body is formed by welding a plurality of welding parts (3) on two steel parts (2) through the bottom, a buffer assembly (4) is connected between the middle parts of the two steel parts (2), a cover plate (5) is connected between the upper ends of the two steel parts (2), a plurality of inner barrel seats (7) are pre-embedded and poured on the side wall of the bridge panel (1) along the section length of the bridge panel, a plurality of steel bar inserting rods (6) corresponding to the inner barrel seats (7) are welded on the outer side wall of the two steel parts (2), the steel bar inserting rods (6) are inserted into filling inner cavities (71) formed in the inner barrel seats (7), the buffer assembly (4) comprises sliding steel bars (8) in clamping and embedding sliding connection with the inner side wall in the middle parts of the steel parts (2), a plurality of groups of buffer rod pieces are connected between the two sliding steel bar pieces (8), the buffer rod pieces connected between the two sliding steel bar pieces (8) comprise a first sleeve (10) and first telescopic rods (9) connected with the two ends, the end parts of first telescopic rods (9) connected with the two ends of a first sleeve (10) are respectively welded and fixed with two slide steel bars (8), a first damping spring (11) is connected between the inner ends of the two first telescopic rods (9), an elastic nail seat (13) is integrally formed above the inner end of the inner barrel seat (7), an elastic cavity is formed inside the elastic nail seat (13), an elastic nail (14) vertically penetrating into a filling inner cavity (71) is arranged in the elastic cavity, a compression spring (15) is connected between the upper end of the elastic nail (14) and the top of the elastic cavity, a limiting hole is formed in the end part of the steel bar inserting rod (6) corresponding to the position of the elastic nail (14), the lower end of the elastic nail (14) is matched and clamped in the limiting hole, a filling joint (12) and a grout pipe (121) communicated with the filling inner cavity (71) are welded on the upper part of the inner barrel seat (7), the filling joint (12) and the upper end of the grout pipe (121) penetrate through the surface of the bridge deck (1), and the upper ends of the grouting joint (12) and the grout discharging pipe (121) are flush with the surface of the bridge deck (1).
2. The anti-resonance device for the steel-concrete composite bridge according to claim 1, wherein: the welding part (3) comprises an upper welding part (22) and a lower welding part (23), a second spring (24) is connected between the upper and lower welding parts, a notch (25) is arranged on one side, facing the lower welding part (23), of the upper welding part (22), a bulge (26) corresponding to the notch (25) is arranged on one side, corresponding to the notch (25), of the lower welding part (23), a second sleeve (16) is arranged between the upper welding part (22) and the first sleeve (10), a third spring (27) is connected between the second sleeve (16) and the first sleeve (10), a second damping spring (17) is arranged in the second sleeve (16), two ends of the second damping spring (17) are respectively connected with a second telescopic rod (18), a connecting rod (19) is connected to the outer side of the second telescopic rod (18), and a through hole is formed in the position, corresponding to the connecting rod (19), of the steel part (2), the bridge panel (1) is provided with a groove (20) corresponding to the position of the connecting rod, the connecting rod (19) penetrates through the through hole and is inserted into the groove (20), and the vertical length of the groove (20) is larger than the diameter of the connecting rod (19).
3. An anti-resonance device for a steel-concrete composite bridge according to claims 1 and 2, characterized in that: the material rigidity of the projection (26) is greater than that of the lower welding part (23), and the material rigidity of the lower welding part (23) is greater than that of the upper welding part (22).
4. An anti-resonance device for a steel-concrete composite bridge according to claims 1 and 2, characterized in that: the cover plate (5) is formed by horizontally arranging a plurality of cover plate steel bars (51), convex strips (52) are integrally formed on one side of each cover plate steel bar (51), and the convex strips (52) arranged on one side of each cover plate steel bar (51) are embedded into the adjacent cover plate steel bars (51).
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| CN202010772512.5A CN111827106B (en) | 2020-08-04 | 2020-08-04 | Anti-resonance device for steel-concrete composite bridge |
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| CN202010772512.5A CN111827106B (en) | 2020-08-04 | 2020-08-04 | Anti-resonance device for steel-concrete composite bridge |
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| CN111827106B CN111827106B (en) | 2022-07-08 |
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Cited By (3)
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| CN112391944A (en) * | 2020-11-24 | 2021-02-23 | 中建四局第三建设有限公司 | Bridge expansion joint device |
| CN112681124A (en) * | 2020-12-26 | 2021-04-20 | 朱锋 | Comb-tooth-shaped damping displacement bridge expansion device |
| CN113029067A (en) * | 2021-03-24 | 2021-06-25 | 马超 | Bridge expansion joint monitoring and connecting device |
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| CN112681124A (en) * | 2020-12-26 | 2021-04-20 | 朱锋 | Comb-tooth-shaped damping displacement bridge expansion device |
| CN112681124B (en) * | 2020-12-26 | 2022-07-01 | 朱锋 | Comb-tooth-shaped damping displacement bridge expansion device |
| CN113029067A (en) * | 2021-03-24 | 2021-06-25 | 马超 | Bridge expansion joint monitoring and connecting device |
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