CN204000602U - A kind of bridge main beam seamless expansion-contraction devices based on corrugated steel - Google Patents
A kind of bridge main beam seamless expansion-contraction devices based on corrugated steel Download PDFInfo
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- CN204000602U CN204000602U CN201420487829.4U CN201420487829U CN204000602U CN 204000602 U CN204000602 U CN 204000602U CN 201420487829 U CN201420487829 U CN 201420487829U CN 204000602 U CN204000602 U CN 204000602U
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Abstract
The utility model discloses a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel, comprise being connected in the built-in steel plateelement that stays on institute's construction bridges girder on shrinkage joint, being a plurality ofly all fixed on the shear key on built-in steel plateelement and being filled in shrinkage joint and being positioned at the Expansion Joint filler packed layer of built-in steel plateelement top; Girder be take shrinkage joint and as boundary, is divided into two beam sections, and beam section comprises girder beam body and deck installation structure; Built-in steel plateelement is between the link of two beam sections, and built-in steel plateelement two ends are provided with anchoring piece; Built-in steel plateelement comprises flat plate section and two corrugated steel sections; Expansion Joint filler packed layer is connected between the deck installation structure of two beam sections, between Expansion Joint filler packed layer and deck installation structure, is provided with the net of putting more energy into.The utility model is simple in structure, reasonable in design and easy for installation, result of use is good, the problem such as can solve installation inconvenience, the stress performance that existing stretching device exists and durability is poor, application life is shorter.
Description
Technical field
The utility model relates to a kind of bridge extension joint, especially relates to a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel.
Background technology
Bridge extension joint is for making vehicle steadily by bridge floor and meet the needs of bridge floor distortion, the device arranging in bridge floor expansion joint place.Stretching device is link the weakest in bridge construction, the percussion of directly bearing wheel cyclic reverse loading due to stretching device, even if there is very small out-of-flatness, under carload effect, will make this place be severely affected effect, therefore the most easily be destroyed and the replacing that needs repairing.Slightly defect and deficiency in design or construction, will cause its early stage damage, and this not only directly makes bridge passenger feel uncomfortable, lacks the sense of security, sometimes also can have influence on the normal use of bridge construction itself.Cause the general damaged reason of stretching device, except the magnitude of traffic flow increases, heavy vehicle increases outside (percussion obviously increases), design, construction and maintenance aspect also can not be ignored, moreover bridge floor suddenlys change at shrinkage joint position stiffness, under the repeated action of fast running vehicular load, had a strong impact on its application life again.Thereby bridge extension joint rapid wear problem is a great problem of highway communication always.To sum up, because shrinkage joint long term exposure is in atmosphere, environment for use is severe, and is directly bearing traffic loading, adds the defect that design, construction and maintenance aspect exist, and makes the destruction that stretching device is very easily damaged and cause bridge floor and beam and slab structure thereupon; Meanwhile, the inefficacy at shrinkage joint can increase vehicular impact power again, worsens driving situation and bridge force-bearing, forms vicious circle.
Conventional stretching device is broadly divided into five large classes by mode of transfer force and construction features, that is: shearing, the modulus supporting type of dock, steel supporting type, building rubber compound and seamless expansion-contraction devices (containing bridge floor continuous structure).But the problems such as existing bridge extension joint all exists installation inconvenience, stress performance to some extent and durability is poor, application life is shorter, therefore shrinkage joint rapid wear problem is not still solved well at present.Best shrinkage joint is jointless, thereby bridge seamless process technology produces and paid close attention to.But at present, for the research of jointless construction, be scarcely out of swaddling-clothes, form of structure is less, and application is restricted.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel is provided, it is simple in structure, reasonable in design and easy for installation, result of use is good, the problem such as can effectively solve installation inconvenience, the stress performance that existing stretching device exists and durability is poor, application life is shorter.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel, it is characterized in that: comprise and be connected in the built-in steel plateelement on shrinkage joint that stays on institute's construction bridges girder, a plurality ofly all be fixed on shear key on built-in steel plateelement and be filled at described the shrinkage joint in and be positioned at the Expansion Joint filler packed layer above built-in steel plateelement, a plurality of described shear key are all embedded in Expansion Joint filler packed layer, between described built-in steel plateelement and Expansion Joint filler packed layer, by a plurality of described shear key, be fastenedly connected and be integrated, institute's construction bridges girder be take described shrinkage joint and as boundary, is divided into former and later two beam sections, and described beam section comprises girder beam body and is laid in the deck installation structure on girder beam body, described shrinkage joint is T font, described built-in steel plateelement is between the link of two described beam sections, the link of two described beam sections is shrinkage joint link, and it is overhanging section of girder that the girder beam body of described shrinkage joint link extend out to the section of stretching out that described deck installation structure outside and girder beam body extend out to described deck installation structure outside, overhanging section of girder that described built-in steel plateelement is laid in two described beam sections is upper, and the two ends of built-in steel plateelement are provided with the anchoring piece being anchored on overhanging section of described girder, described built-in steel plateelement comprises flat plate section and two corrugated steel sections that lay respectively at described flat plate section both sides, and the thickness of slab of described flat plate section is greater than the thickness of slab of corrugated steel section, described Expansion Joint filler packed layer is connected between the deck installation structure of two described beam sections, between described Expansion Joint filler packed layer and described deck installation structure, be provided with the net of putting more energy into, between described Expansion Joint filler packed layer and described deck installation structure, by the net of putting more energy into, be fastenedly connected and be integrated, the upper surface of described Expansion Joint filler packed layer is mutually concordant with the upper surface of described deck installation structure.
Above-mentioned a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel, is characterized in that: described built-in steel plateelement is direction across bridge to be laid, and in described built-in steel plateelement, the ripple direction of corrugated steel section is direction across bridge.
Above-mentioned a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel, it is characterized in that: described flat plate section is positioned at the top, junction between the girder beam body of two described beam sections, the width of flat plate section is greater than the joint gap between the girder beam body of two described beam sections.
Above-mentioned a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel, it is characterized in that: described flat plate section is positioned at directly over the junction between the girder beam body of two described beam sections, two described corrugated steel section symmetries are laid in the both sides of flat plate section, and the width of described flat plate section is greater than the stroke at described shrinkage joint.
Above-mentioned a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel, it is characterized in that: in described deck installation structure, be provided with bridge floor steel mesh reinforcement, described bridge floor steel mesh reinforcement extend out to described deck installation structure outside, and anchoring piece and bridge floor steel mesh reinforcement are fastenedly connected and are integrated.
Above-mentioned a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel, is characterized in that: described bridge floor steel mesh reinforcement and corrugated steel section are welded and fixed and are integrated, described in the net of putting more energy into be steel mesh reinforcement.
Above-mentioned a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel, it is characterized in that: described deck installation structure comprises the concrete bridge deck pavement layer being laid on girder beam body and is laid in the asphalt concrete pavement on concrete bridge deck pavement layer, the described net of putting more energy into is between Expansion Joint filler packed layer and asphalt concrete pavement, and described bridge floor steel mesh reinforcement is laid in concrete bridge deck pavement layer.
Above-mentioned a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel, it is characterized in that: the quantity of described built-in steel plateelement is a plurality of, a plurality of described built-in steel plateelements are laid from left to right along the direction across bridge of institute's construction bridges girder, and a plurality of described built-in steel plateelement connects as one.
Above-mentioned a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel, is characterized in that: described shear key is WELDING STUDS.
Above-mentioned a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel, is characterized in that: a plurality of described shear key are quincunx laying, shear key fixing in described corrugated steel section is all positioned on the crest of corrugated steel section.
The utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design and input cost is lower, stress performance is good, it utilizes the flat plate section of built-in steel plateelement to be placed between the girder beam body of two beam sections, and utilizes the slip between built-in steel plateelement and girder beam body stroke to be transferred to the corrugated steel section of built-in steel plateelement; Making Expansion Joint filler packed layer on built-in steel plateelement, and the corrugated steel section of Expansion Joint filler packed layer and built-in steel plateelement simultaneously absorbs the dilatation amount of bridge construction jointly, thereby can effectively solve the rapid wear problem of current bridge expanssion joint.
2, utilize WELDING STUDS to strengthen the bond strength of built-in steel plateelement and Expansion Joint filler packed layer, strengthen built-in steel plateelement and the compatibility of deformation of Expansion Joint filler packed layer and the property received of stroke, the dilatation and a small amount of rotational deformation needs that can adapt to bridge superstructure, and good endurance, long service life.
3, the flat plate section of built-in steel plateelement is placed between the girder beam body of two beam sections, can effectively guarantee the vertical rigidity of shrinkage joint seam crossing, and because Expansion Joint filler packed layer and deck installation structure are connected to form non-individual body by the net of putting more energy into, make driving steadily comfortable, avoid faulting of slab ends, jump the situation generations such as car, impact.
4, built-in steel plateelement and Expansion Joint filler packed layer form two-layer closely knit water proof structure, and water resistance is good, have further improved durability of the present utility model and application life.
5, built-in steel plateelement can be by the segmented prefabrication of bridge deck width direction, crudy is easy to guarantee and be convenient to transportation, connected mode between adjacent built-in steel plateelement is mainly welding and is connected with bolt, and the fixed form of built-in steel plateelement is anchoring, thereby simple installation, and can effectively avoid construction error, and be convenient to maintenance and reinforcement.Meanwhile, in built-in steel plateelement and deck installation structure, set bridge floor steel mesh reinforcement is fastenedly connected and is integrated, thereby the bonding strength between built-in steel plateelement and deck installation structure is higher, excellent in durability.
6, the pointing that Expansion Joint filler packed layer adopts is conventional road material, easily obtains, and input cost cost is lower.
7, result of use is good and practical value is high, widely applicable, can be applicable to different from footpath, the wide bridge construction of different bridge, by flat plate section in built-in steel plateelement, realize different strokes from the longitudinal length of corrugated steel section, can adapt to different bridge deck widths by quantity and the lateral dimension of built-in steel plateelement; Can need designing and making to become different models according to routine; It can be used for newly building bridge, also can be used for the transformation of Jiu Qiao shrinkage joint.
In sum, the utility model is simple in structure, reasonable in design and easy for installation, result of use is good, have that input cost is lower, simple installation, stress performance are good, good endurance, the advantage such as practical, the problem such as can effectively solve installation inconvenience, the stress performance that existing stretching device exists and durability is poor, application life is shorter.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that vertical bridge of the present utility model is to structural representation.
Fig. 3 is the structural representation of the built-in steel plateelement of the utility model.
Fig. 4 is the installation position schematic diagram of WELDING STUDS on the built-in steel plateelement of the utility model.
Description of reference numerals:
1-built-in steel plateelement; 1-1-flat plate section; 1-2-corrugated steel section;
2-Expansion Joint filler packed layer; 3-anchoring piece; 4-the net of putting more energy into;
5-bridge floor steel mesh reinforcement; 6-WELDING STUDS; 7-1-girder beam body;
7-2-concrete bridge deck pavement layer; 7-3-asphalt concrete pavement.
The specific embodiment
As shown in Figure 1 and Figure 2, the utility model comprises and is connected in the built-in steel plateelement 1 that stays on institute's construction bridges girder on shrinkage joint, is a plurality ofly all fixed on the shear key on built-in steel plateelement 1 and is filled in described shrinkage joint and is positioned at the Expansion Joint filler packed layer 2 of built-in steel plateelement 1 top, a plurality of described shear key are all embedded in Expansion Joint filler packed layer 2, between described built-in steel plateelement 1 and Expansion Joint filler packed layer 2, by a plurality of described shear key, are fastenedly connected and are integrated.Institute's construction bridges girder be take described shrinkage joint and as boundary, is divided into former and later two beam sections, and described beam section comprises girder beam body 7-1 and is laid in the deck installation structure on girder beam body 7-1.Described shrinkage joint is T font, described built-in steel plateelement 1 is between the link of two described beam sections, the link of two described beam sections is shrinkage joint link, and it is overhanging section of girder that the girder beam body 7-1 of described shrinkage joint link extend out to the section of stretching out that described deck installation structure outside and girder beam body 7-1 extend out to described deck installation structure outside; Overhanging section of girder that described built-in steel plateelement 1 is laid in two described beam sections is upper, and the two ends of built-in steel plateelement 1 are provided with the anchoring piece 3 being anchored on overhanging section of described girder.In conjunction with Fig. 3, described built-in steel plateelement 1 comprises flat plate section 1-1 and two corrugated steel section 1-2 that lay respectively at described flat plate section 1-1 both sides, and the thickness of slab of described flat plate section 1-1 is greater than the thickness of slab of corrugated steel section 1-2.Described Expansion Joint filler packed layer 2 is connected between the deck installation structure of two described beam sections, between described Expansion Joint filler packed layer 2 and described deck installation structure, be provided with the net 4 of putting more energy into, between described Expansion Joint filler packed layer 2 and described deck installation structure, by the net 4 of putting more energy into, be fastenedly connected and be integrated.The upper surface of described Expansion Joint filler packed layer 2 is mutually concordant with the upper surface of described deck installation structure.
In the present embodiment, described built-in steel plateelement 1 is direction across bridge to be laid, and in described built-in steel plateelement 1, the ripple direction of corrugated steel section 1-2 is direction across bridge.
During practice of construction, described flat plate section 1-1 is above the junction between the girder beam body 7-1 of two described beam sections, and the width of flat plate section 1-1 is greater than the joint gap between the girder beam body 7-1 of two described beam sections.In the present embodiment, described flat plate section 1-1 is directly over the junction between the girder beam body 7-1 of two described beam sections, two described corrugated steel section 1-2 symmetries are laid in the both sides of flat plate section 1-1, and the width of described flat plate section 1-1 is greater than the stroke at described shrinkage joint.
Described Expansion Joint filler packed layer 2 Expansion Joint filler used is the materials such as epoxy asphalt mixture, rubber-asphalt mixture.
In the present embodiment, be provided with bridge floor steel mesh reinforcement 5 in described deck installation structure, described bridge floor steel mesh reinforcement 5 extend out to described deck installation structure outside, and anchoring piece 3 is fastenedly connected and is integrated with bridge floor steel mesh reinforcement 5.
During practice of construction, described bridge floor steel mesh reinforcement 5 is welded and fixed and is integrated with corrugated steel section 1-2.
In the present embodiment, described in put more energy into net 4 for steel mesh reinforcement.
In the present embodiment, described deck installation structure comprises the concrete bridge deck pavement layer 7-2 being laid on girder beam body 7-1 and is laid in the asphalt concrete pavement 7-3 on concrete bridge deck pavement layer 7-2, the described net 4 of putting more energy into is between Expansion Joint filler packed layer 2 and asphalt concrete pavement 7-3, and described bridge floor steel mesh reinforcement 5 is laid in concrete bridge deck pavement layer 7-2.
In actual use procedure, described in the net 4 of putting more energy into realize being connected and compatibility of deformation of Expansion Joint filler packed layer 2 and described deck installation structure (specifically asphalt concrete pavement 7-3).
In the present embodiment, the quantity of described built-in steel plateelement 1 is a plurality of, and a plurality of described built-in steel plateelements 1 are laid from left to right along the direction across bridge of institute's construction bridges girder, and a plurality of described built-in steel plateelement 1 connects as one.And, between adjacent two the described built-in steel plateelements 1 in left and right, with welding manner, be fixedly connected with or be fastenedly connected and be integrated by connecting bolt.
During practice of construction, can, according to the transverse width of institute's construction bridges girder, the quantity of adopted built-in steel plateelement 1 and size be adjusted accordingly.
In the present embodiment, described shear key is WELDING STUDS 6.
As shown in Figure 4, a plurality of described shear key are quincunx laying, and on described corrugated steel section 1-2, fixing shear key is all positioned on the crest of corrugated steel section 1-2.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification of above embodiment being done according to the utility model technical spirit, change and equivalent structure change, and all still belong in the protection domain of technical solutions of the utility model.
Claims (10)
1. the bridge main beam seamless expansion-contraction devices based on corrugated steel, it is characterized in that: comprise being connected in the built-in steel plateelement (1) that stays on institute's construction bridges girder on shrinkage joint, being a plurality ofly all fixed on the shear key on built-in steel plateelement (1) and being filled at described the shrinkage joint in and being positioned at the Expansion Joint filler packed layer (2) above built-in steel plateelement (1), a plurality of described shear key are all embedded in Expansion Joint filler packed layer (2), between described built-in steel plateelement (1) and Expansion Joint filler packed layer (2), by a plurality of described shear key, are fastenedly connected and are integrated; Institute's construction bridges girder be take described shrinkage joint and as boundary, is divided into former and later two beam sections, and described beam section comprises girder beam body (7-1) and is laid in the deck installation structure on girder beam body (7-1); Described shrinkage joint is T font, described built-in steel plateelement (1) is between the link of two described beam sections, the link of two described beam sections is shrinkage joint link, and it is overhanging section of girder that the girder beam body (7-1) of described shrinkage joint link extend out to the section of stretching out that described deck installation structure outside and girder beam body (7-1) extend out to described deck installation structure outside; It is upper that described built-in steel plateelement (1) is laid in overhanging section of the girder of two described beam sections, and the two ends of built-in steel plateelement (1) are provided with the anchoring piece (3) being anchored on overhanging section of described girder; Described built-in steel plateelement (1) comprises flat plate section (1-1) and two corrugated steel sections (1-2) that lay respectively at described flat plate section (1-1) both sides, and the thickness of slab of described flat plate section (1-1) is greater than the thickness of slab of corrugated steel section (1-2); Described Expansion Joint filler packed layer (2) is connected between the deck installation structure of two described beam sections, between described Expansion Joint filler packed layer (2) and described deck installation structure, be provided with the net of putting more energy into (4), between described Expansion Joint filler packed layer (2) and described deck installation structure, by the net of putting more energy into (4), be fastenedly connected and be integrated; The upper surface of described Expansion Joint filler packed layer (2) is mutually concordant with the upper surface of described deck installation structure.
2. according to a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel claimed in claim 1, it is characterized in that: described built-in steel plateelement (1) is direction across bridge to be laid, and in described built-in steel plateelement (1), the ripple direction of corrugated steel section (1-2) is direction across bridge.
3. according to a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel described in claim 1 or 2, it is characterized in that: described flat plate section (1-1) is positioned at the top, junction between the girder beam body (7-1) of two described beam sections, the width of flat plate section (1-1) is greater than the joint gap between the girder beam body (7-1) of two described beam sections.
4. according to a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel claimed in claim 3, it is characterized in that: described flat plate section (1-1) is positioned at directly over the junction between the girder beam body (7-1) of two described beam sections, two described corrugated steel sections (1-2) symmetry is laid in the both sides of flat plate section (1-1), and the width of described flat plate section (1-1) is greater than the stroke at described shrinkage joint.
5. according to a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel described in claim 1 or 2, it is characterized in that: in described deck installation structure, be provided with bridge floor steel mesh reinforcement (5), described bridge floor steel mesh reinforcement (5) extend out to described deck installation structure outside, and anchoring piece (3) is fastenedly connected and is integrated with bridge floor steel mesh reinforcement (5).
6. according to a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel claimed in claim 5, it is characterized in that: described bridge floor steel mesh reinforcement (5) and corrugated steel section (1-2) are welded and fixed and are integrated, described in the net (4) of putting more energy into be steel mesh reinforcement.
7. according to a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel claimed in claim 5, it is characterized in that: described deck installation structure comprises the concrete bridge deck pavement layer (7-2) being laid on girder beam body (7-1) and is laid in the asphalt concrete pavement (7-3) on concrete bridge deck pavement layer (7-2), the described net of putting more energy into (4) is positioned between Expansion Joint filler packed layer (2) and asphalt concrete pavement (7-3), and described bridge floor steel mesh reinforcement (5) is laid in concrete bridge deck pavement layer (7-2).
8. according to a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel described in claim 1 or 2, it is characterized in that: the quantity of described built-in steel plateelement (1) is a plurality of, a plurality of described built-in steel plateelements (1) are laid from left to right along the direction across bridge of institute's construction bridges girder, and a plurality of described built-in steel plateelements (1) connect as one.
9. according to a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel described in claim 1 or 2, it is characterized in that: described shear key is WELDING STUDS (6).
10. according to a kind of bridge main beam seamless expansion-contraction devices based on corrugated steel described in claim 1 or 2, it is characterized in that: a plurality of described shear key are quincunx laying, shear key fixing in described corrugated steel section (1-2) is all positioned on the crest of corrugated steel section (1-2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420487829.4U CN204000602U (en) | 2014-08-27 | 2014-08-27 | A kind of bridge main beam seamless expansion-contraction devices based on corrugated steel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420487829.4U CN204000602U (en) | 2014-08-27 | 2014-08-27 | A kind of bridge main beam seamless expansion-contraction devices based on corrugated steel |
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| CN204000602U true CN204000602U (en) | 2014-12-10 |
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| CN201420487829.4U Expired - Fee Related CN204000602U (en) | 2014-08-27 | 2014-08-27 | A kind of bridge main beam seamless expansion-contraction devices based on corrugated steel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594191A (en) * | 2015-02-16 | 2015-05-06 | 西安公路研究院 | Corrugated steel plate built-in seamless expansion device between girder and bridge abutment and construction method of seamless expansion device |
| CN104762873A (en) * | 2015-02-16 | 2015-07-08 | 西安公路研究院 | Abutment hidden expansion device and construction method thereof |
| CN104988848A (en) * | 2015-07-10 | 2015-10-21 | 永嘉涛口日用品有限公司 | Bridge capable of automatically cleaning stretchable joints |
| CN110172905A (en) * | 2019-06-26 | 2019-08-27 | 中铁二十三局集团建筑设计研究院有限公司 | A kind of gapless expanded joint structure |
| CN110725194A (en) * | 2019-11-19 | 2020-01-24 | 福州大学 | Variable-spacing absorption device and construction method thereof |
| WO2024164881A1 (en) * | 2023-02-09 | 2024-08-15 | 宁波路宝科技实业集团有限公司 | Seamless bridge expansion device |
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2014
- 2014-08-27 CN CN201420487829.4U patent/CN204000602U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594191A (en) * | 2015-02-16 | 2015-05-06 | 西安公路研究院 | Corrugated steel plate built-in seamless expansion device between girder and bridge abutment and construction method of seamless expansion device |
| CN104762873A (en) * | 2015-02-16 | 2015-07-08 | 西安公路研究院 | Abutment hidden expansion device and construction method thereof |
| CN104762873B (en) * | 2015-02-16 | 2016-05-25 | 西安公路研究院 | A kind of Abutment implicit expression retractor device and construction method thereof |
| CN104988848A (en) * | 2015-07-10 | 2015-10-21 | 永嘉涛口日用品有限公司 | Bridge capable of automatically cleaning stretchable joints |
| CN104988848B (en) * | 2015-07-10 | 2016-08-17 | 永嘉涛口日用品有限公司 | One can carry out self-cleaning bridge to expansion joint |
| CN110172905A (en) * | 2019-06-26 | 2019-08-27 | 中铁二十三局集团建筑设计研究院有限公司 | A kind of gapless expanded joint structure |
| CN110172905B (en) * | 2019-06-26 | 2024-04-05 | 中铁二十三局集团建筑设计研究院有限公司 | Seamless expansion joint structure |
| CN110725194A (en) * | 2019-11-19 | 2020-01-24 | 福州大学 | Variable-spacing absorption device and construction method thereof |
| CN110725194B (en) * | 2019-11-19 | 2024-05-31 | 福州大学 | Unequal-spacing suction transformation device and construction method thereof |
| WO2024164881A1 (en) * | 2023-02-09 | 2024-08-15 | 宁波路宝科技实业集团有限公司 | Seamless bridge expansion device |
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