CN212533705U - Wet seam connection structure of precast concrete bridge deck - Google Patents
Wet seam connection structure of precast concrete bridge deck Download PDFInfo
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- CN212533705U CN212533705U CN202020418292.1U CN202020418292U CN212533705U CN 212533705 U CN212533705 U CN 212533705U CN 202020418292 U CN202020418292 U CN 202020418292U CN 212533705 U CN212533705 U CN 212533705U
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Abstract
The embodiment of the utility model discloses a wet joint connecting structure of a precast concrete bridge deck, which comprises a precast concrete bridge deck and a steel plate; the steel plate is fixedly connected with the end surface of one transverse side of the precast concrete bridge deck; the precast concrete decking includes vertical face, and the steel sheet laminating is on vertical face, and the upper and lower both ends of steel sheet all surpass vertical face, and two steel sheets that are located between the vertical face of two adjacent precast concrete decking laminate each other, and two steel sheets are located the part fixed connection of vertical face lower extreme, and the part fixed connection that is located vertical face upper end of two steel sheets, and the spread groove is enclosed out jointly to the upper end of the butt joint department of two adjacent precast concrete decking, and the fixed connection department of two steel sheets is by concrete placement in the spread groove. The embodiment of the utility model provides a convenient and fast is assembled at the scene, does not have the construction of templatization completely, has avoided the loaded down with trivial details process of on-the-spot form setting, dismantlement, and it is little to have the cast-in-place volume, characteristics that the efficiency of construction is high.
Description
Technical Field
The utility model relates to a bridge engineering technical field, concretely relates to wet seam connection structure of precast concrete decking.
Background
The composite structure bridge has the economic performance of integral stress, fully exerts the performance advantages of respective materials of steel and concrete, makes up the rationality of respective defects and the outstanding advantage of convenient construction, becomes a great development direction of the technical development of bridges in China, and has wide engineering application prospect.
Prefabricated decking joint construction is the weakest and comparatively complicated position of construction of atress in the integrated configuration bridge, and the wet seam of conventional prefabricated decking adopts annular reinforcing bar overlap joint and hangs the mould method construction more, and construction process is loaded down with trivial details, has influenced integrated configuration bridge construction progress greatly. In order to allow for efficient transfer of forces between the bars, appropriate connecting measures are typically taken for the bars, such as welding and tying, and it is necessary to provide sufficient anchoring or overlap length for the bars. When the formwork hanging method is adopted for construction, the problems of large workload of formwork installation and disassembly, rough surface after formwork disassembly, excessive moisture, long time for wet joint maintenance and the like exist.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a wet seam connection structure of precast concrete decking to solve the great technical problem of on-the-spot steel bar connection work load, formwork erection dismantlement work load among the precast decking joint construction.
For solving the technical problem, the embodiment of the utility model provides a technical scheme is so realized:
the embodiment of the utility model provides a wet seam connection structure of precast concrete decking, include: prefabricating a concrete bridge deck and a steel plate; the steel plate is fixedly connected to the end face of one transverse side of the precast concrete bridge deck; the precast concrete bridge deck slab comprises vertical surfaces, steel plates are attached to the vertical surfaces, the upper ends and the lower ends of the steel plates exceed the vertical surfaces, the two steel plates between the vertical surfaces of the precast concrete bridge deck slab are attached to each other, the two steel plates are located on the lower ends of the vertical surfaces and are fixedly connected to the upper ends of the vertical surfaces, connecting grooves are formed in the upper ends of the butt joints of the precast concrete bridge deck slab in an enclosing mode, and the fixed joints of the steel plates are poured by concrete into the connecting grooves.
The embodiment of the utility model provides a, fix at precast concrete decking terminal surface in advance through the steel sheet, the upper end of the butt joint department of two adjacent precast concrete decking encloses out the spread groove jointly, but the joint construction of direct concreting has avoided the formwork installation and the dismantlement engineering of the wet seam in-process of conventional precast concrete decking, and the cast-in-place volume is little, and the efficiency of construction is high. Through the fixed connection of the upper end and the lower end of the steel plates of the vertical surfaces of the two adjacent precast concrete bridge deck plates, the mode of welding the precast concrete bridge deck plates on site through reinforcing steel bars in the conventional wet joint process is avoided, the welding space on site is narrow and small, the workload is large, the problems of difficult welding of the reinforcing steel bars on the lower layer and the like are solved, and the construction workload is reduced.
Furthermore, the wet seam connection structure of precast concrete bridge deck slab includes first bolt, two the steel sheet lower extreme is provided with first bolt hole respectively, first bolt wear to locate two the first bolt hole of steel sheet is downthehole with the lower extreme of fixed connection two the steel sheet.
Furthermore, an open notch is formed in the top end of the vertical surface of the precast concrete bridge deck, the open notches of two adjacent precast concrete bridge deck plates form the connecting groove together, and the steel plate extends into the connecting groove along the vertical direction.
Further, the width of the upper end of the connecting groove is 24-26 cm.
Furthermore, the wet seam connection structure of precast concrete bridge deck slab includes the second bolt, two the steel sheet upper end is provided with the second bolt hole respectively, the second bolt wear to locate two the second bolt hole of steel sheet is downthehole with fixed connection two the upper end of steel sheet.
Furthermore, the precast concrete deck slab comprises first reinforcing steel bars pre-embedded in the upper layer of the precast concrete deck slab, and the first reinforcing steel bars transversely extend into the connecting grooves and are poured into the connecting grooves by concrete.
Furthermore, the precast concrete bridge deck comprises an inclined plane, the inclined plane and the vertical plane are intersected to form an end surface on one transverse side of the precast concrete bridge deck, the steel plate comprises a vertical section and an inclined section, the vertical section is attached to the vertical plane, the inclined section is attached to the inclined plane, and the connecting groove is formed between the inclined sections of two adjacent steel plates; the wet seam connection structure of precast concrete decking includes the second reinforcing bar, the second reinforcing bar sets up in two the juncture of slope section, two the steel sheet all with the second steel bar welding.
Further, the width of the upper end of the connecting groove formed between the inclined sections of the two adjacent steel plates is 9-11 cm.
Furthermore, a plurality of welding nails are pre-embedded in the precast concrete bridge deck, and the end parts of the welding nails are welded with the steel plates.
Furthermore, a plurality of third steel bars are pre-embedded in the precast concrete deck slab, and the end parts of the third steel bars are welded with the steel plate.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic perspective view illustrating a wet joint connecting structure of a precast concrete deck slab and a steel plate according to an embodiment of the present invention;
FIG. 2 is a schematic view of a wet joint connecting structure of a precast concrete deck slab according to a first embodiment of the present application;
FIG. 3 is a schematic view of a wet joint connection structure of a precast concrete deck slab according to a second embodiment of the present application;
FIG. 4 is a schematic view of a wet joint connecting structure of a precast concrete deck slab according to a third embodiment of the present application;
fig. 5 is a schematic view of a wet joint connecting structure of a precast concrete deck according to a fourth embodiment of the present application.
Description of reference numerals:
1. prefabricating a bridge deck; 2. a steel beam; 3. a shear connector; 4. joining the wet joint with the steel beam; 5. wet joints not combined with steel beams; 6. a steel plate; 7. welding nails; 8. a first bolt; 9. connecting grooves; 10. a second bolt; 11. a first reinforcing bar; 12. a second reinforcing bar; 13. a third reinforcing bar;
s1, vertical surface; s2, inclined surface.
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. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various combinations of the specific features of the present invention are not described separately.
The steel-concrete composite beam is composed of precast concrete deck slabs 1, steel beams 2 and shear connectors 3, as shown in fig. 1, the precast concrete deck slabs 1 are connected with the steel beams 2 through the shear connectors 3, and the precast concrete deck slabs 1 are connected through wet joints. According to whether combine with the girder steel, wet seam divide into again with girder steel 3 combine wet seam 4, non-combine wet seam 5 two kinds with the girder steel, the utility model provides a wet seam steel sheet connection structure of precast concrete decking is applicable to non-wet seam 5 with the girder steel is connected, the embodiment of the utility model provides a do not have the special explanation, wet seam all indicates non-combine wet seam 5 with the girder steel.
The embodiment of the utility model provides a wet seam connection structure of precast concrete decking, include: prefabricating a concrete bridge deck 1 and a steel plate 6; the steel plate 6 is fixedly connected with the end surface of one transverse side of the precast concrete deck slab 1; precast concrete bridge deck 1 includes vertical face S1, and steel sheet 6 laminates on vertical face 11, and the upper and lower both ends of steel sheet 11 all exceed vertical face 11, and is concrete, and steel sheet 6 is along vertical arrangement in precast concrete bridge deck' S vertical face S1, can regard as permanent structure to strengthen the connection use of wet seam.
In some embodiments, as shown in fig. 2 and 4, the fixing connection of the steel plate 6 and the precast concrete deck slab 1 includes: a plurality of welding nails 7 are embedded in the precast concrete bridge deck slab 1, and the end parts of the welding nails 7 are welded with the steel plates 6. In other embodiments, as shown in fig. 3 and 5, the fixing connection of the steel plate 6 and the precast concrete deck slab 1 includes: a plurality of third reinforcing steel bars 13 are embedded in the precast concrete bridge deck 1, and the end parts of the third reinforcing steel bars 13 are welded with the steel plates 6. The steel plate 6 in the embodiment shown in fig. 2, 3, 4, 5 has both upper and lower ends beyond the vertical plane S1, wherein the lower end of the steel plate 6 extends to the outside of the precast concrete deck plate 1. It should be noted that the thickness of the steel plate 6 is not limited, and the specific situation is determined by calculation according to the structural stress, which is only an example in the figure.
The two steel plates 6 located between the vertical surfaces S1 of the two adjacent precast concrete bridge deck plates 1 are mutually attached, the parts of the two steel plates 6 located at the lower end of the vertical surface S1 are fixedly connected, the parts of the two steel plates 6 located at the upper end of the vertical surface S1 are fixedly connected, the upper ends of the butt joints of the two adjacent precast concrete bridge deck plates 1 jointly enclose the connecting grooves 9, and the fixed joints of the two steel plates are poured into the connecting grooves 9 by concrete. Specifically, two adjacent precast concrete bridge decks 1 are mutually related through steel plates 6, the two steel plates 6 are located the partial fixed connection of vertical face S1 lower extreme to and the partial fixed connection mode that is located the vertical face S1 upper end has solved the problem of the long-time maintenance of conventional wet seam, can realize short-term high-speed joint between two adjacent precast concrete bridge decks 1, can obtain great joint strength before the concrete hardens, can accelerate precast bridge deck construction speed. It should be noted that the concrete poured into the connecting groove 9 may be a high-strength grouting material or an Ultra-high performance concrete UHPC (Ultra-high performance concrete), wherein the high-strength grouting material has the characteristics of good self-flowing property, high-strength, high self-sealing property, rust prevention, and the like, and has the advantages of firm quality, shortened construction period, convenient use, and the like in the aspect of construction.
The embodiment of the utility model provides a, 6 pre-fixing of steel sheet are at 1 terminal surfaces of precast concrete decking, and the upper end of two adjacent precast concrete decking 1's butt joint departments encloses out spread groove 9 jointly, and the joint construction that can directly pour concrete has realized the construction of no templating, has avoided the loaded down with trivial details process of on-the-spot template installation, dismantlement. The design of the connecting structure of the precast concrete bridge deck steel plates 6 fully exerts the characteristic of rapid construction of the structure. The embodiment of the utility model provides an it is narrow and small and work load big to have avoided among the prior art narrow and small and the work load in on-the-spot welding space when passing through steel bar welding between the conventional wet seam in-process precast concrete decking, is located the difficult scheduling problem of steel bar welding of precast concrete decking lower floor, has reduced the construction work volume for the construction progress has realized that precast concrete decking is on-the-spot to assemble fast, has promoted steel-concrete combination beam assembly level.
The utility model discloses wet seam connection structure of precast concrete decking has solved the difficult technical problem of the wet seam design of combination beam and construction, has realized the industrial assembly ization construction of engineering, prefabrication and on-the-spot fast assembly, has practiced out green construction and industrial manufacturing theory, not only is applicable to the precast decking of composite construction bridge, and the use can be used for reference in the connection of connecting between precast concrete T roof beam or the case roof beam edge of a wing, precast floor in the building structure.
In one embodiment, the wet seam connection structure of the precast concrete deck slab includes a first bolt 8, the lower ends of the two steel plates 6 are respectively provided with a first bolt hole, and the first bolt 8 is inserted into the first bolt holes of the two steel plates 6 to fixedly connect the lower ends of the two steel plates 6. Specifically, as shown in fig. 2, 3, 4 and 5, the portions of the two steel plates 6 located at the lower end of the vertical plane S1 are fixedly connected to the outer side of the precast concrete deck 1 by the first bolts 8. The first bolt can be a high-strength bolt, the mode of fixedly connecting the high-strength bolt is convenient and simple, and the construction process is accelerated. It should be noted that the number of the first bolts 8 is not limited, and may be determined by calculation according to structural stress, and this embodiment is only illustrated as an example in the figure.
The top end of the precast concrete deck slab 1 on the vertical surface S1 is formed with an open notch, and the line shape of the notch at the end surface of the precast concrete deck slab is not fixed, so the shape of the connecting groove 9 formed by the open notches of two adjacent precast concrete deck slabs 1 is also not fixed, the connecting groove formed by the open notches is square in this embodiment, and the connecting groove may be trapezoidal in another embodiment. As shown in fig. 2 and 3, the steel plate 6 extends into the connecting groove 9 along the vertical direction, and since the top surface of the precast concrete deck slab 1 has a road pavement or a railway ballast bed, it is required to ensure flatness, the connecting groove 9 is required to be reserved at the upper end of the precast concrete deck slab 1 to provide a space for the fixed connection of the upper end of the steel plate 6.
In an embodiment, the width of the upper end of the connecting groove 9 is 24-26cm, because the utility model discloses a wet seam connection structure of precast concrete bridge deck board, steel plate 6 is fixedly connected in the terminal surface of precast concrete bridge deck board 1, two steel plates 6 that are located between the vertical surface S1 of two adjacent precast concrete bridge deck boards 1 are laminated each other, therefore, the controllable design of connecting groove 9 that is located the open notch formation of the top of vertical surface S1 at precast concrete bridge deck board 1 is in the scope of 24-26cm, when this width scope just in favor of the construction, two steel plates 6 are located the fixed connection of the part of vertical surface S1 upper end in the connecting groove, for example, the construction connection of second bolt 10. Compared with the width of 50-80cm in the conventional construction, the width range of the wet joint is small to ensure the overlapping length of the steel bars, so that the field wet operation amount is greatly reduced.
In some embodiments, the wet seam connection structure of the precast concrete deck slab includes a second bolt 10, as shown in fig. 2 and 3, in the first and second embodiments of the present application, the upper ends of the two steel plates 6 are respectively provided with a second bolt hole, and the second bolt 10 is inserted into the second bolt hole of the two steel plates 6 to fixedly connect the upper ends of the two steel plates 6. The second bolts 10 may also be high-strength bolts, and are generally used for connecting steel plates, and the number of the second bolts 10 is not limited, and the specific situation is determined by calculation according to structural stress.
In the first embodiment and the second embodiment of the application, the upper end and the lower end of the two steel plates 6 are fixedly connected through the first bolt 8 and the second bolt 10 respectively, so that the construction amount is reduced, and the construction progress is accelerated; in addition, the wet joint connecting structure of the precast concrete bridge deck plate ensures that the upper end and the lower end of the precast concrete bridge deck plate obtain higher connecting strength, the connecting structure has better mechanical property and relatively better bending property, and can be used in the connecting parts of all precast concrete bridge deck plates.
In one embodiment, referring to fig. 2 and 3, the precast concrete deck slab 1 includes first reinforcing bars 11 embedded in an upper layer of the precast concrete deck slab, and the first reinforcing bars 11 laterally extend into the connecting grooves 9 and are poured into the connecting grooves 9. Specifically, the position that first reinforcing bar 11 transversely extended to in the connecting groove 9 is as far as possible in the upper end of steel sheet 6, avoids first reinforcing bar 11 and the crossing bending that leads to in the steel sheet 6 upper end, influences the inside atress of wet seam. When the two steel plates 6 between the vertical surfaces S1 of the two adjacent precast concrete bridge deck plates 1 are attached to each other, the first steel bars 11 embedded in the upper layer of the precast concrete bridge deck plates 1 are arranged in the connecting grooves 9 in a staggered manner, and are poured into the connecting grooves 9 by concrete, so that the connecting rigidity of the wet joints is further enhanced.
In the third embodiment and the fourth embodiment of the present application, as shown in fig. 4 and 5, the precast concrete bridge deck 1 includes an inclined surface S2, the inclined surface S2 intersects with the vertical surface S1 to form an end surface of one lateral side of the precast concrete bridge deck 1, the steel plate 6 includes a vertical section and an inclined section, the vertical section is attached to the vertical surface S1, the inclined section is attached to the inclined surface S2, and the connecting groove 9 is formed between the inclined sections of two adjacent steel plates; the connecting groove 9 is in the shape of an inverted triangle. The wet seam connection structure of precast concrete decking includes second reinforcing bar 12, and second reinforcing bar 12 sets up in the juncture of two slope sections, and two steel sheets 6 all weld with second reinforcing bar 12.
Because the inclined section of the steel plate 6 is attached to the inclined surface S2 of the precast concrete deck slab 1, the inclination range of the inclined section of the steel plate 6 cannot be too large in order to facilitate the welding of the second steel bar 12 and the two steel plates 6. Furthermore, the width of the upper end of the connecting groove formed between the inclined sections of the two adjacent steel plates is 9-11cm, compared with the embodiment in which the width of the upper end of the connecting groove ranges from 24 cm to 26cm, the connecting groove in the embodiment is smaller in size and more economical, and the field wet operation amount is greatly reduced. In this embodiment, the upper end of the prefabricated bridge deck is lower in connection strength than the prefabricated bridge deck is fixed by the second bolts 10 by welding the upper end portions of the two steel plates 6 on the vertical surface S1 through the second steel bars 12, and the prefabricated bridge deck can be used in the wet joint of the prefabricated concrete bridge deck in the mid-span positive bending moment area.
According to the wet joint connecting structure of the precast concrete bridge deck provided by the embodiment, the upper ends of the two steel plates are flexibly connected in a fixed mode, and can be determined and selected according to the site construction condition.
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 (10)
1. The wet joint connecting structure of the precast concrete bridge deck is characterized by comprising a precast concrete bridge deck and a steel plate; the steel plate is fixedly connected to the end face of one transverse side of the precast concrete bridge deck; the precast concrete bridge deck slab comprises vertical surfaces, steel plates are attached to the vertical surfaces, the upper ends and the lower ends of the steel plates exceed the vertical surfaces, the two steel plates between the vertical surfaces of the precast concrete bridge deck slab are attached to each other, the two steel plates are located on the lower ends of the vertical surfaces and are fixedly connected to the upper ends of the vertical surfaces, connecting grooves are formed in the upper ends of the butt joints of the precast concrete bridge deck slab in an enclosing mode, and the fixed joints of the steel plates are poured by concrete into the connecting grooves.
2. The wet seam connection structure of a precast concrete bridge deck according to claim 1, comprising first bolts, wherein the lower ends of the two steel plates are respectively provided with first bolt holes, and the first bolts are inserted into the first bolt holes of the two steel plates to fixedly connect the lower ends of the two steel plates.
3. The precast concrete bridge deck wet seam connection structure of claim 1, wherein the precast concrete bridge deck is formed with an open notch at a top end of the vertical surface, the open notches of two adjacent precast concrete bridge deck plates together form the connection groove, and the steel plate extends into the connection groove in a vertical direction.
4. The wet seam connection structure of a precast concrete deck slab as set forth in claim 3, wherein the width of the upper end of the connection groove is 24-26 cm.
5. The wet seam connection structure of a precast concrete bridge deck according to claim 3, comprising second bolts, wherein second bolt holes are respectively formed at the upper ends of the two steel plates, and the second bolts are inserted into the second bolt holes of the two steel plates to fixedly connect the upper ends of the two steel plates.
6. The precast concrete bridge deck wet seam connection structure of claim 3, wherein the precast concrete bridge deck includes first reinforcing bars pre-buried in an upper layer of the precast concrete bridge deck, the first reinforcing bars extending laterally into the connection grooves and being concreted therein.
7. The wet seam connection structure of a precast concrete bridge deck according to claim 1, wherein the precast concrete bridge deck includes an inclined surface, the inclined surface intersects with the vertical surface to form an end surface of one lateral side of the precast concrete bridge deck, the steel plate includes a vertical section and an inclined section, the vertical section is attached to the vertical surface, the inclined section is attached to the inclined surface, and the connection groove is formed between the inclined sections of two adjacent steel plates; the wet seam connection structure of precast concrete decking includes the second reinforcing bar, the second reinforcing bar sets up in two the juncture of slope section, two the steel sheet all with the second steel bar welding.
8. The wet seam connection structure of precast concrete deck slab as set forth in claim 7, wherein the width of the upper end of the connection groove formed between the inclined sections of the adjacent two steel plates is 9-11 cm.
9. The wet seam connection structure of a precast concrete bridge deck according to claim 1, wherein a plurality of welding nails are embedded in the precast concrete bridge deck, and ends of the welding nails are welded to the steel plates.
10. The wet joint connection structure of a precast concrete deck plate according to claim 1, wherein a plurality of third reinforcing bars are embedded in the precast concrete deck plate, and ends of the third reinforcing bars are welded to the steel plates.
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| CN202020418292.1U CN212533705U (en) | 2020-03-27 | 2020-03-27 | Wet seam connection structure of precast concrete bridge deck |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411366A (en) * | 2020-03-27 | 2021-02-26 | 中铁第四勘察设计院集团有限公司 | Wet joint connecting structure of precast concrete bridge deck and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411366A (en) * | 2020-03-27 | 2021-02-26 | 中铁第四勘察设计院集团有限公司 | Wet joint connecting structure of precast concrete bridge deck and construction method |
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