CN217499904U - Assembled narrow steel case-UHPC decking combination beam bridge - Google Patents
Assembled narrow steel case-UHPC decking combination beam bridge Download PDFInfo
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- CN217499904U CN217499904U CN202220855267.9U CN202220855267U CN217499904U CN 217499904 U CN217499904 U CN 217499904U CN 202220855267 U CN202220855267 U CN 202220855267U CN 217499904 U CN217499904 U CN 217499904U
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Abstract
The utility model discloses an assembled narrow width steel case-UHPC decking combination beam bridge mainly includes UHPC decking, novel shear connector, narrow width steel case roof beam and crossbeam, narrow width steel case roof beam is equipped with a plurality of and parallel arrangement, and the fixed novel shear connector of multiunit that is provided with of narrow width steel case roof beam top surface, UHPC decking lays on narrow width steel case roof beam through novel shear connector, the crossbeam is fixed to be set up between two adjacent narrow width steel case roof beams, and the crossbeam has a plurality ofly along narrow width steel case roof beam length direction parallel arrangement. Compared with the common steel-concrete composite beam, the utility model has the advantages that the shearing resistance and the bonding property of the joint surface are improved, the durability and the integrity of the structure are improved, the cost can be saved, and the economic efficiency is good.
Description
Technical Field
The utility model relates to a bridge engineering equipment technical field, concretely relates to assembled narrow width of cloth steel case-UHPC decking combination beam bridge.
Background
The steel-concrete combined beam bridge is a beam bridge formed by connecting steel beams and concrete plates into a whole by connecting pieces, and the structure fully exerts the advantages of concrete and steel, namely the concrete bears larger compressive stress and the steel bears larger shear stress. Meanwhile, the steel-concrete combined beam bridge has the characteristics of high bearing capacity, light dead weight, high rigidity and good ductility, and is a beam bridge structure which is most widely applied at the present stage.
However, the conventional steel-concrete composite girder has many disadvantages, such as poor pulling resistance of the stud, poor overall performance of the steel-concrete composite girder, and easy cracking at the joint of the stud and the concrete, which are disadvantageous to the durability of the structure, and thus a girder bridge having a more optimized and reasonable structure, a good shearing resistance, and a stronger durability and integrity is required.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the background technology, the utility model provides an assembled narrow steel box-UHPC bridge deck plate composite beam bridge, UHPC (Ultra-High Performance Concrete) is Ultra-High Performance Concrete, including UHPC bridge deck plate, novel shear connector, narrow steel box girder and crossbeam, the narrow steel box girder is equipped with a plurality of and parallel arrangement, and the narrow steel box girder top surface is fixed and is provided with the novel shear connector of multiunit, UHPC bridge deck plate is laid on the narrow steel box girder through novel shear connector, the crossbeam is fixed and is set up between two adjacent narrow steel box girders, and the crossbeam has a plurality of parallel arrangement along the narrow steel box girder length direction;
novel shear connector includes C type channel-section steel, transverse connection reinforcing bar and longitudinal connection reinforcing bar, and transverse connection hole has been seted up to C type channel-section steel bottom surface, and longitudinal connection hole has been seted up to C type channel-section steel both sides face, every group C type channel-section steel is equipped with a plurality ofly along horizontal and vertical equal parallel, transverse connection reinforcing bar passes through transverse connection hole cross-under transverse arrangement's C type channel-section steel, transverse connection reinforcing bar and longitudinal connection reinforcing bar cross section fixed connection through longitudinal connection hole cross-under longitudinal arrangement's C type channel-section steel.
Preferably, the narrow steel box girder comprises a narrow steel box girder upper flange steel plate, a narrow steel box girder lower flange steel plate and two steel webs, the two steel webs are located on two sides of the narrow steel box girder, the upper end of each steel web is welded with the narrow steel box girder upper flange steel plate, the lower end of each steel web is welded with the narrow steel box girder lower flange steel plate, and the novel shear connector is arranged on the narrow steel box girder upper flange steel plate.
Preferably, the distance between the single-beam steel webs of the narrow steel beam is 1.0-1.2 m.
Preferably, a plurality of narrow width steel box girder diaphragms are welded on the narrow width steel box girder lower flange steel plate along the length direction, and the narrow width steel box girder diaphragms are located in the narrow width steel box girder, a plurality of longitudinal and transverse stiffening ribs are further arranged on the steel web plate.
Preferably, the UHPC bridge deck slab is a prefabricated slab, extended reinforcing steel bars are arranged at the connecting positions of adjacent UHPC bridge deck slabs and are staggered with each other, and the joints of the adjacent UHPC bridge deck slabs are spliced by cast-in-situ UHPC wet joints;
a plurality of C-shaped channel steel connecting notches are preset on the UHPC bridge deck slab and correspond to the positions of the C-shaped channel steels on the flange steel plate on the narrow steel box girder one by one;
an upper layer of reinforcing mesh and a lower layer of reinforcing mesh are arranged in the UHPC bridge deck.
Preferably, the UHPC bridge deck slab is laid with C-shaped channel steels placed in connecting slots on the UHPC bridge deck slab, and the upper surface of the C-shaped channel steels is lower than that of the UHPC bridge deck slab.
The utility model discloses following beneficial effect has:
1. the utility model discloses simple structure, the degree is high in the prefabrication degree of assembling, and narrow width of cloth steel box girder, novel shear connector and UHPC decking all are in mill's processing preparation, and the cast-in-place seam part UHPC's of UHPC pouring is only need accomplished to the job site, shortens construction cycle, improves the efficiency of construction.
2. The utility model discloses a novel shear connector has increased the area of contact of UHPC decking and narrow width of cloth steel box girder, has increased the ability of shearing of combination beam, has increased the wholeness and the durability of structure.
3. The utility model discloses a reduce the distance between narrow width steel box girder steel web, increase top bottom plate thickness realizes the optimization of ordinary steel box girder, adopts the quantity of the horizontal stiffening rib of the reducible combination beam of narrow width steel box girder and narrow width steel box girder diaphragm simultaneously, both can save steel quantity, reduce cost, accelerated construction speed, also reduced the expense of later stage application maintenance, economic benefits is showing.
Drawings
FIG. 1 is an overall view of the present invention;
FIG. 2 is an exploded view of the narrow steel beam structure of the present invention;
fig. 3 is the structure schematic diagram of the novel shear connector of the present invention.
Reference numbers in the figures: the bridge girder comprises 1-UHPC bridge deck boards, 2-narrow steel box girders, 3-narrow steel box girder upper flange steel plates, 4-narrow steel box girder lower flange steel plates, 5-steel webs, 6-narrow steel box girder transverse clapboards, 7-novel shear connectors, 8-C-shaped channel steel, 9-longitudinal connecting steel bars, 10-transverse connecting steel bars, 11-UHPC wet joints and 12-crossbeams.
Detailed Description
In order to make the present invention clearer and more obvious, the technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments, it should be understood that the given embodiment is only one of the implementation modes, and does not represent all embodiments.
With reference to the accompanying drawings 1-3, an assembled narrow steel box-UHPC bridge deck composite beam bridge, wherein UHPC (Ultra-High Performance Concrete) is Ultra-High Performance Concrete, and comprises a UHPC bridge deck 1, novel shear connectors 7, narrow steel box girders 2 and cross beams 12, wherein the narrow steel box girders 2 are arranged in parallel, a plurality of groups of novel shear connectors 7 are fixedly arranged on the top surfaces of the narrow steel box girders 2, the UHPC bridge deck 1 is laid on the narrow steel box girders 2 through the novel shear connectors 7, the cross beams 12 are fixedly arranged between two adjacent narrow steel box girders 2, and a plurality of cross beams 12 are arranged in parallel along the length direction of the narrow steel box girders 2;
Preferably, the narrow steel box girder comprises a narrow steel box girder upper flange steel plate 3, a narrow steel box girder lower flange steel plate 4 and two steel webs 5, the two steel webs 5 are located at two sides of the narrow steel box girder 2, the upper end of each steel web 5 is welded with the narrow steel box girder upper flange steel plate 3, the lower end of each steel web 5 is welded with the narrow steel box girder lower flange steel plate 4, and the novel shear connector 7 is arranged on the narrow steel box girder upper flange steel plate 3.
Preferably, the distance between the single-beam steel webs 5 of the narrow steel beam 2 is 1.0-1.2 m and is smaller than the distance between the single-beam webs of the common steel box girder, and the thicknesses of the upper flange steel plate and the lower flange steel plate of the narrow steel box girder 2 are increased, so that the common steel box girder is optimized, the structure of the narrow steel box girder is optimized, the construction cost is saved, and the construction period is shortened.
Preferably, a plurality of narrow width steel box girder diaphragms 6 are welded on the narrow width steel box girder bottom flange steel plate 4 along the length direction, and the narrow width steel box girder diaphragms 6 are located in the narrow width steel box girder, still be equipped with a plurality of vertical and horizontal stiffening ribs on the steel web 5, adopt the reducible narrow width steel box girder diaphragms 6 of narrow width steel box girder 2 and the setting quantity of vertical and horizontal stiffening ribs to reduce the later maintenance expense.
Preferably, the UHPC bridge deck slab 1 is a prefabricated slab, extended steel bars are arranged at the positions where the adjacent UHPC bridge deck slabs 1 are connected, the extended steel bars are staggered, the joints of the adjacent UHPC bridge deck slabs 1 are spliced by a cast-in-place UHPC wet joint 11, a plurality of C-shaped channel steel 8 connecting notches are preset on the UHPC bridge deck slab 1, the connecting notches correspond to the positions of the C-shaped channel steel 8 on the narrow steel box girder upper flange steel plate 3 one by one, and an upper layer of reinforcing mesh and a lower layer of reinforcing mesh are arranged in the UHPC bridge deck slab 1.
Preferably, when the UHPC bridge deck slab 1 is laid, the C-shaped channel steel 8 is placed in a connecting groove on the UHPC bridge deck slab 1, the upper surface of the C-shaped channel steel 8 is lower than that of the UHPC bridge deck slab 1, and after the C-shaped channel steel 8 is placed in the connecting groove, the connecting groove is poured to finish the laying of the UHPC bridge deck slab 1.
The combined beam bridge is suitable for bridge construction with a span of 50m-80m and a medium-small span.
The utility model discloses a novel shear connector, increase the area of contact of UHPC decking and narrow width of steel case roof beam, and then increased the ability of shearing of combination girder bridge and the wholeness and the durability of combination girder bridge structure, adopt the reducible combination bridge of narrow width of steel case roof beam indulge horizontal stiffening rib and the setting quantity of narrow width of steel case roof beam cross slab simultaneously, can save the steel quantity, reduce cost, reduce on-the-spot concatenation work volume, shorten construction cycle, can also reduce the expense of later stage application maintenance, in addition the utility model discloses simple structure, prefabricated degree of assembling is high, construction steps is simple, can shorten construction cycle, improves the efficiency of construction.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an assembled narrow width steel case-UHPC decking composite beam bridge which characterized in that: the bridge deck comprises a plurality of UHPC bridge decks (1), novel shear connectors (7), narrow steel box girders (2) and cross beams (12), wherein the narrow steel box girders (2) are arranged in parallel, a plurality of groups of novel shear connectors (7) are fixedly arranged on the top surfaces of the narrow steel box girders (2), the UHPC bridge decks (1) are laid on the narrow steel box girders (2) through the novel shear connectors (7), the cross beams (12) are fixedly arranged between two adjacent narrow steel box girders (2), and the cross beams (12) are arranged in parallel along the length direction of the narrow steel box girders (2);
novel shear connector (7) include C type channel-section steel (8), transverse connection reinforcing bar (10) and longitudinal connection reinforcing bar (9), and transverse connection hole has been seted up to C type channel-section steel (8) bottom surface, and longitudinal connection hole has been seted up to C type channel-section steel (8) both sides face, every group C type channel-section steel (8) are equipped with a plurality ofly along horizontal and vertical equal parallel, transverse connection reinforcing bar (10) cross-under transverse arrangement's C type channel-section steel (8) through transverse connection hole cross-under, longitudinal connection reinforcing bar (9) are through C type channel-section steel (8) of longitudinal connection hole cross-under longitudinal arrangement, transverse connection reinforcing bar (10) and longitudinal connection reinforcing bar (9) cross over fixed connection.
2. The assembled narrow steel box-UHPC bridge deck composite beam bridge of claim 1, wherein: narrow steel box girder (2) are including narrow steel box girder top flange steel sheet (3), narrow steel box girder bottom flange steel sheet (4) and two steel web (5), two steel web (5) are located the both sides of narrow steel box girder (2), and steel web (5) upper end welds with narrow steel box girder top flange steel sheet (3) mutually, and steel web (5) lower extreme welds with narrow steel box girder bottom flange steel sheet (4) mutually, and novel shear connector (7) set up on narrow steel box girder top flange steel sheet (3).
3. The assembled narrow steel box-UHPC bridge deck composite beam bridge of claim 2, wherein: the distance between the narrow steel box girder (2) and the single-girder steel webs (5) is 1.0-1.2 m.
4. The assembled narrow steel box-UHPC bridge deck composite beam bridge of claim 2, wherein: a plurality of narrow width steel box girder diaphragms (6) are welded on the narrow width steel box girder lower flange steel plate (4) along the length direction, and the narrow width steel box girder diaphragms (6) are located in the narrow width steel box girder (2), a plurality of longitudinal transverse stiffening ribs are further arranged on the steel web (5).
5. The assembled narrow steel box-UHPC bridge deck combination beam bridge of claim 1, characterized in that: the UHPC bridge deck slab (1) is a prefabricated slab, extended steel bars are arranged at the connecting positions of adjacent UHPC bridge deck slabs (1) and are staggered with each other, and the joints of the adjacent UHPC bridge deck slabs (1) are spliced by cast-in-situ UHPC wet joints (11);
a plurality of C-shaped channel steel (8) connecting notches are preset on the UHPC bridge deck (1), and the connecting notches correspond to the C-shaped channel steel (8) on the upper flange steel plate (3) of the narrow steel box girder in a one-to-one mode; an upper layer of reinforcing mesh and a lower layer of reinforcing mesh are arranged in the UHPC bridge deck (1).
6. The assembled narrow steel box-UHPC bridge deck composite beam bridge of claim 5, wherein: when the UHPC bridge deck slab (1) is laid, the C-shaped channel steel (8) is placed in a connecting groove on the UHPC bridge deck slab (1), and the upper surface of the C-shaped channel steel (8) is lower than that of the UHPC bridge deck slab (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220855267.9U CN217499904U (en) | 2022-04-14 | 2022-04-14 | Assembled narrow steel case-UHPC decking combination beam bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220855267.9U CN217499904U (en) | 2022-04-14 | 2022-04-14 | Assembled narrow steel case-UHPC decking combination beam bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217499904U true CN217499904U (en) | 2022-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220855267.9U Active CN217499904U (en) | 2022-04-14 | 2022-04-14 | Assembled narrow steel case-UHPC decking combination beam bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217499904U (en) |
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2022
- 2022-04-14 CN CN202220855267.9U patent/CN217499904U/en active Active
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