CN214459549U - Steel-concrete combined bridge - Google Patents

Abstract

The utility model discloses a steel-concrete composite bridge, including prefabricated girder segment and prefabricated bent cap, prefabricated bent cap passes through bent cap extension section and pier stud connection, during steel-concrete composite bridge's construction, preparation prefabricated bent cap and prefabricated girder segment, concreting, hoist and mount prefabricated bent cap, connect overhanging reinforcing bar and bent cap extension section, cover overhanging reinforcing bar and bent cap extension section's junction with the concrete, hoist and mount prefabricated girder segment, will prefabricate the girder segment and be connected with prefabricated bent cap. The bridge structure is low in overall structure height, the building cost of the bridge can be saved, and the attractiveness of the bridge is improved.

Description

Steel-concrete combined bridge

Technical Field

The utility model is used for bridge technical field especially relates to a steel-concrete composite bridge.

Background

With the acceleration of the urbanization process, the construction of municipal infrastructure gradually enters the climax, and the traffic capacity of a construction area is easily suddenly reduced due to the traditional cast-in-place construction, so that the smoothness and the safety of roads are influenced, even traffic interruption often occurs, and the working life of residents is greatly influenced; in addition, the traditional cast-in-place site has large workload, low construction efficiency, high overall energy consumption and serious disturbance phenomenon, and the assembled bridge can remarkably accelerate the construction progress, reduce the interference to the existing traffic and be beneficial to environmental protection through member industrialized manufacturing and assembling construction.

The reinforced concrete composite beam exerts respective material advantages of steel and concrete, is a bridge structure with strong competitiveness, is easy to design into an assembly type member, and is convenient and fast to construct on site. The design method of the assembly type steel-concrete combined continuous beam commonly used at the present stage is to set the main beam as a longitudinal sectional component and need to set a large-scale bent cap structure, so that the height of the bridge structure is increased, the construction cost is improved, and the aesthetic feeling is greatly reduced.

Disclosure of Invention

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a steel-concrete composite bridge, its structural height that can reduce whole bridge reduces construction cost, promotes the aesthetic feeling.

The utility model provides a technical scheme that its technical problem adopted is: a steel-concrete composite bridge comprises

The prefabricated main beam sections are provided in plurality and comprise steel beams, concrete plates and a plurality of first shear connectors, and the concrete plates are integrally connected with the steel beams through the first shear connectors;

prefabricated bent cap for connect adjacent two prefabricated girder segment section, the below of prefabricated bent cap is equipped with the pier stud, prefabricated bent cap pass through bent cap extension section with the pier stud is connected, bent cap extension section includes a plurality of wallboards, each wear to be equipped with a plurality of first pegs on the wallboard, the pre-buried a plurality of overhanging reinforcing bars that have in top of pier stud, overhanging reinforcing bar stretches into a plurality ofly between the first peg, the overhanging reinforcing bar outside is equipped with the hoop reinforcing bar, the hoop reinforcing bar with overhanging reinforcing bar ligature is connected, first peg the overhanging reinforcing bar and the hoop reinforcing bar passes through the concrete cover.

Preferably, the precast capping beam comprises a capping beam top plate, a capping beam bottom plate and a capping beam web plate, the capping beam web plate is located between the capping beam top plate and the capping beam bottom plate, and the capping beam extension section is located on the lower side of the capping beam bottom plate.

Preferably, the bent cap extension further includes a bearing plate fixed to a bottom of each of the wall plates.

Preferably, the bent cap top plate and the bent cap bottom plate corresponding to the bent cap extension section are respectively provided with a first through hole, two first transverse stiffening plates are arranged between the bent cap webs, the two first transverse stiffening plates are respectively positioned on two sides of the first through holes and are arranged at intervals along the length direction of the bent cap webs, and second studs are arranged inside the two first transverse stiffening plates.

Preferably, two second transverse stiffening plates are arranged between the cover beam webs, and the two second transverse stiffening plates are arranged at intervals along the length direction of the cover beam webs and are positioned on two sides of the two first transverse stiffening plates.

Preferably, the second transverse stiffening plate and the first transverse stiffening plate are spaced from each other to form a gap, a third stud is arranged in the gap, and a second through hole is formed in the bottom of the first transverse stiffening plate and used for filling concrete into the gap.

Preferably, the girder steel includes girder steel roof, girder steel bottom plate and girder steel web, the girder steel web is located the girder steel roof with between the girder steel bottom plate, prefabricated bent cap still includes the lateral extension section, the lateral extension section has roof, bottom plate and web, the girder steel roof with the roof welding of lateral extension section, the girder steel bottom plate with the bottom plate welding of lateral extension section, the girder steel web with the web of lateral extension section docks each other and installs the connecting plate additional in the butt joint department and passes through bolt fixed connection.

Preferably, still including establishing the anti buckling structure of pier stud top, anti buckling structure includes a plurality of second shear force connecting pieces, and is a plurality of second shear force connecting piece distributes be in bent cap bottom plate and part cover through the muddy earth on the girder steel bottom plate.

One of the above technical solutions has at least one of the following advantages or beneficial effects: in the bridge building process, firstly, a pier stud with overhanging reinforcing steel bars pre-buried at the top is hoisted, then the prefabricated bent cap is hoisted above the pier stud, the overhanging reinforcing steel bars above the pier stud are inserted into the bent cap extending section, so that the wallboard extends into the space between the first studs respectively, then the annular reinforcing steel bars are bound and connected with the overhanging reinforcing steel bars, concrete is poured at the joint of the overhanging reinforcing steel bars and the bent cap extending section so as to cover the first studs, the overhanging reinforcing steel bars and the annular reinforcing steel bars, a temporary pier is poured, the temporary pier is used as a support, the prefabricated girder segment is connected with the prefabricated bent cap, then the temporary pier is dismantled, and concrete is poured at the top of the prefabricated bent cap and the top of the joint of the prefabricated bent cap and the prefabricated girder segment. The bridge structure is low in overall structure height, the building cost of the bridge can be saved, and the attractiveness of the bridge is improved.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

figure 2 is a schematic cross-sectional view of a prefabricated capping beam according to the embodiment of figure 1;

FIG. 3 is a schematic illustration of the connection of the precast capping beams to the precast main beam segments in the embodiment of FIG. 1;

FIG. 4 is an enlarged view of a portion of the embodiment shown in FIG. 2 at A;

FIG. 5 is a top perspective view of the embodiment of FIG. 2 at B;

FIG. 6 is an enlarged view of a portion of the embodiment of FIG. 1 at C;

fig. 7 is a partial enlarged view of the embodiment shown in fig. 1 at D.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the present invention, if there is a description of directions (up, down, left, right, front and back), it is only for convenience of description of the technical solution of the present invention, and it is not intended to indicate or imply that the technical features indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the utility model, the meaning of a plurality of is one or more, the meaning of a plurality of is more than two, and the meaning of more than two is understood as not including the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is any description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise explicitly defined, the terms "set", "install", "connect", and the like are to be understood in a broad sense, and for example, may be directly connected or may be indirectly connected through an intermediate medium; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The technical skill in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

Referring to fig. 1, 2, 4 and 5, an embodiment of the present invention provides a steel-concrete composite bridge, which mainly includes a plurality of prefabricated main beam segments 2 and prefabricated capping beams 3, the prefabricated main beam segments 2 include a steel beam 20, a concrete slab 21 and a plurality of first shear connectors 22, the plurality of first shear connectors 22 are fixed on the top of the steel beam 20, the concrete slab 21 is integrally connected with the steel beam 20 through the plurality of first shear connectors, the prefabricated capping beam 3 connects two adjacent prefabricated main beam segments 2, a pier 1 is arranged below the prefabricated capping beam 3, the prefabricated capping beam 3 is connected with the pier 1 through a capping beam extension 7, the capping beam extension 7 is located at the bottom of the prefabricated capping beam 3 and extends downwards, the capping beam extension 7 includes a plurality of wall plates 70, a plurality of first studs 4 are penetrated through each wall plate 70, a plurality of external reinforcing steel bars 10 are embedded in the top of the pier 1, overhanging reinforcing bar 10 upwards extends at pier stud 1's top, and overhanging reinforcing bar 10 stretches into between a plurality of first pegs 4, and the overhanging reinforcing bar 10 outside is equipped with a plurality of hoop reinforcing bar 5, and hoop reinforcing bar 5 is connected with overhanging reinforcing bar 10 ligature, and first peg 4, overhanging reinforcing bar 10 and hoop reinforcing bar 5 cover through the concrete.

In the bridge building process, firstly, a pier stud 1 with an overhanging reinforcing steel bar 10 at the top is hoisted, then a prefabricated capping beam 3 is hoisted above the pier stud 1, the overhanging reinforcing steel bar 10 above the pier stud 1 is inserted into a capping beam extension section 7, each wall plate 70 extends into a plurality of first studs respectively, then a circumferential reinforcing steel bar 5 is bound and connected with the overhanging reinforcing steel bar 10, concrete is poured at the joint of the overhanging reinforcing steel bar 10 and the capping beam extension section 7 to cover the first studs 4, the overhanging reinforcing steel bar 10 and the circumferential reinforcing steel bar 5, a temporary pier 100 is poured, the temporary pier 100 serves as a support, the prefabricated girder segment 2 is connected with the prefabricated capping beam 3, then the temporary pier 100 is dismantled, and concrete is poured at the top of the prefabricated capping beam 3 and the top of the joint of the prefabricated capping beam 3 and the prefabricated girder segment 2. The bridge structure is low in overall structure height, the building cost of the bridge can be saved, and the attractiveness of the bridge is improved.

Referring to fig. 2, 3, 4 and 5, the prefabricated capping beam 3 comprises a capping beam top plate 30, a capping beam bottom plate 31 and a capping beam web 32, the capping beam web 32 is located between the capping beam top plate 30 and the capping beam bottom plate 31, and the capping beam extension 7 is arranged at the bottom of the capping beam bottom plate 31.

Referring to fig. 2 and 4, in some embodiments, the capping extension 7 further comprises a bearing plate 71 fixed to the bottom of each wall plate 70 to bear the pressure exerted on the wall plate 70 by the prefabricated capping beam 3.

Referring to fig. 2, 4 and 5, in some embodiments, first through holes 311 are formed in the top and bottom capping plates 30 and 31 corresponding to the capping extension sections 7, specifically, the first through holes 311 are located at the connection positions of the bottom capping plates 31 and the capping extension sections 7, two first transverse stiffening plates 41 are disposed between the capping webs 32, the two first transverse stiffening plates 41 are respectively located at two sides of the first through holes 311 and are arranged at intervals along the length direction of the capping webs 32, and second pegs 51 are disposed inside the two first transverse stiffening plates 41. Since the two first transverse stiffener plates 41 together with the capping web 32 define a cavity therebetween, the cavity can be filled with concrete through the first through holes 311, thereby increasing the local stress of the prefabricated capping beam 3. Through first through-hole 311 mainly used to 7 inside concretings of bent cap extension, at the bridge construction in-process, after the hoist and mount of prefabricated bent cap 3 finish, through first through-hole 311 to 7 inside packing concretings of bent cap extension, can improve pier stud 1 and 7 connectivity of bent cap extension like this, wherein the concrete of pouring the adoption is ultra high performance concrete material.

Referring to fig. 2, 4 and 5, two second transverse stiffening plates 42 are further provided inside the capping web 32, and the two second transverse stiffening plates 42 are arranged at intervals along the length direction of the capping web 32 and outside the two first transverse stiffening plates 41. This enables the mechanical properties of the precast capping beam 3 to be further improved.

Referring to fig. 2, 4 and 5, in some embodiments, the second transverse stiffener 42 and the first transverse stiffener 41 are spaced apart from each other to form a gap, a third stud is disposed in the gap, and a second through hole is disposed at the bottom of the first transverse stiffener 41 and is used for filling concrete into the gap. In the process of building the bridge, the concrete poured through the first through holes can flow into the gap formed by the second transverse stiffening plates 42 and the first transverse stiffening plates 41 at intervals through the second through holes, so that the connection performance of the precast capping beam 3 and the pier stud 1 is further improved.

Referring to fig. 3 and 5, the steel beam 20 includes a steel beam top plate, a steel beam bottom plate and a steel beam web 201, the steel beam web 201 is located between the steel beam top plate and the steel beam bottom plate, the lateral extension section 8 is arranged inside the prefabricated bent cap 3, the lateral extension section 8 has a top plate, a bottom plate and a web, the steel beam top plate is welded with the top plate of the lateral extension section 8, the steel beam bottom plate is welded with the bottom plate of the lateral extension section 8, the steel beam web 201 is mutually butted with the web of the lateral extension section 8, a connecting plate 80 is additionally arranged at the butt joint, and the connecting plate 80 is fixed with the webs of the steel beam web 201 and the lateral extension section 8 through bolts.

Referring to fig. 1, 6 and 7, in some embodiments, the anti-buckling structure 9 is further included, the anti-buckling structure 9 is disposed above the pier stud 1, the anti-buckling structure 9 includes a plurality of second shear connectors 91, the plurality of second shear connectors 91 are distributed on the capping beam bottom plate 31 and a portion of the steel beam bottom plate, specifically, the second shear connectors 91 are distributed on a portion of sections of the capping beam bottom plate 31 and a connection portion of the steel beam bottom plate and the capping beam bottom plate 31 along a bridge moving direction, and then concrete is poured to cover the plurality of second shear connectors 91, so that the bearing capacity of the bridge is stronger, and the service life of the bridge is effectively prolonged.

The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (8)

1. A steel-concrete composite bridge is characterized in that: comprises that

The prefabricated main beam sections (2) are provided in plurality, each prefabricated main beam section (2) comprises a steel beam (20), a concrete plate (21) and a plurality of first shear connectors (22), and the concrete plates (21) are connected with the steel beams (20) into a whole through the first shear connectors (22);

prefabricated bent cap (3), be used for connecting adjacent two prefabricated girder segment (2), the below of prefabricated bent cap (3) is equipped with pier stud (1), prefabricated bent cap (3) through bent cap extension (7) with pier stud (1) is connected, bent cap extension (7) include a plurality of wallboard (70), each wear to be equipped with a plurality of first pegs (4) on wallboard (70), the pre-buried a plurality of overhanging reinforcing bars (10) that have in top of pier stud (1), overhanging reinforcing bar (10) stretch into a plurality of between first peg (4), overhanging reinforcing bar (10) outside is equipped with hoop reinforcing bar (5), hoop reinforcing bar (5) with overhanging reinforcing bar (10) ligature is connected, first peg (4) the reinforcing bar is overhanging (10) and hoop reinforcing bar (5) pass through the concrete cover.

2. The steel-concrete composite bridge according to claim 1, wherein: prefabricated bent cap (3) are including bent cap roof plate (30), bent cap bottom plate (31) and bent cap web (32), bent cap web (32) are located bent cap roof plate (30) with between bent cap bottom plate (31), bent cap extension (7) are located the downside of bent cap bottom plate (31).

3. The steel-concrete composite bridge according to claim 2, wherein: the bent cap extension section (7) further comprises a bearing plate (71) fixed to the bottom of each wall plate (70).

4. The steel-concrete composite bridge according to claim 3, wherein: and the bent cap top plate (30) and the bent cap bottom plate (31) are respectively provided with a first through hole (311), two first transverse stiffening plates (41) are arranged between the bent cap webs (32), the first transverse stiffening plates (41) are respectively positioned on two sides of the first through holes (311) and along the length direction of the bent cap webs (32) at intervals, and second studs (51) are arranged inside the first transverse stiffening plates (41).

5. The steel-concrete composite bridge according to claim 4, wherein: two second transverse stiffening plates (42) are arranged between the cover beam webs (32), and the two second transverse stiffening plates (42) are arranged at intervals along the length direction of the cover beam webs (32) and are positioned on two sides of the two first transverse stiffening plates (41).

6. The steel-concrete composite bridge according to claim 5, wherein: the second transverse stiffening plate (42) and the first transverse stiffening plate (41) are mutually spaced to form a gap, a third stud (52) is arranged in the gap, and a second through hole is formed in the bottom of the first transverse stiffening plate (41) and used for filling concrete into the gap.

7. The steel-concrete composite bridge according to claim 2, wherein: girder steel (20) include girder steel roof, girder steel bottom plate and girder steel web (201), girder steel web (201) are located the girder steel roof with between the girder steel bottom plate, prefabricated bent cap (3) still include lateral extension section (8), lateral extension section (8) have roof, bottom plate and web, the girder steel roof with the roof welding of lateral extension section (8), the girder steel bottom plate with the bottom plate welding of lateral extension section (8), girder steel web (201) with the web of lateral extension section (8) docks each other and installs connecting plate (80) additional in butt joint department and passes through bolt (81) fixed connection.

8. The steel-concrete composite bridge according to claim 7, wherein: still including establishing anti buckling structure (9) above pier stud (1), anti buckling structure (9) include a plurality of second shear force connecting piece (91), and are a plurality of second shear force connecting piece (91) distribute in bent cap bottom plate (31) and part cover through muddy earth on the girder steel bottom plate.

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