CN212335736U - Prefabricated assembled steel-concrete composite beam and bridge comprising same - Google Patents
Prefabricated assembled steel-concrete composite beam and bridge comprising same Download PDFInfo
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- CN212335736U CN212335736U CN202020904106.5U CN202020904106U CN212335736U CN 212335736 U CN212335736 U CN 212335736U CN 202020904106 U CN202020904106 U CN 202020904106U CN 212335736 U CN212335736 U CN 212335736U
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Abstract
The embodiment of the application discloses a prefabricated assembled steel-concrete composite beam and a bridge comprising the same, and is used for solving the problem of inconvenience in installation of precast concrete plates. To this end, the precast assembled steel-concrete composite beam provided by an aspect of the embodiments of the present application includes a steel beam and a precast concrete plate, wherein the precast concrete plate is connected to the steel beam through a connection structure, and the connection structure includes a concrete casting disposed in a grouting through hole of the precast concrete plate, and a connection member pre-embedded in the concrete casting and connected to the steel beam.
Description
Technical Field
The utility model belongs to the technical field of the steel-concrete composite beam, especially, relate to a prefabricated assembled steel-concrete composite beam and contain bridge of this steel-concrete composite beam.
Background
The steel-concrete combined structure is a novel structure consisting of a steel main beam, a concrete panel and a connecting piece. The adoption of a proper shear connector is the key of the rapid construction of the rapid assembly type steel-concrete composite beam bridge, and the shear connector is a key stressed part for connecting a concrete slab and a steel beam in the steel-concrete composite beam and ensuring the shear transmission.
The shear connectors widely used at present are stud connectors, and the bearing capacity of a single stud is low, so that dense studs need to be welded along the length direction of a steel main beam, which brings great inconvenience to the installation of precast concrete slabs and has high requirements on the welding process of the studs.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems in the prior art. To this end, it is an object of the embodiments of the present invention to provide a precast assembled steel-concrete composite girder in which precast concrete panels are conveniently installed and a bridge girder including the same.
To this end, the precast assembled steel-concrete composite beam provided by an aspect of the embodiments of the present application includes a steel beam and a precast concrete plate, wherein the precast concrete plate is connected to the steel beam through a connection structure, and the connection structure includes a concrete casting disposed in a grouting through hole of the precast concrete plate, and a connection member pre-embedded in the concrete casting and connected to the steel beam.
In the embodiment of the application, the connecting structure for connecting the precast concrete plate and the steel beam comprises a concrete casting body and a connecting piece pre-embedded in the concrete casting body, in the construction process of the steel-concrete composite beam, the connecting piece is fixedly installed at the corresponding position of the steel beam, the precast concrete plate is placed on the steel beam, the grouting through hole is aligned to the connecting piece, so that the connecting piece falls into the grouting through hole, concrete is poured into the grouting through hole to form the concrete casting body, the steel beam and the precast concrete plate are connected into a whole to participate in stress together, and the grouting through hole avoiding the connecting piece is arranged on the bridge, so that the precast concrete plate is convenient to install, and the connecting structure not only can be used for prefabricating the longitudinal shearing force between the concrete plate and the steel beam, but also can resist the.
In some embodiments, the grout through hole has an inverted cone shape to further prevent the precast concrete plate from being lifted apart from the steel beam.
In some embodiments, the steel beam is an i-steel.
In some embodiments, the connecting structures are evenly spaced along the steel beam in the longitudinal direction to improve the strength of the connection.
In some embodiments, the connector comprises an H-section steel;
positioning steel plates are arranged on the outer sides of the two flange plates of the H-shaped steel;
the positioning steel plate is fixedly connected with the steel beam through a bolt assembly.
In some embodiments, a first open steel plate, a second open steel plate and the positioning steel plate are arranged on the outer side of the two flange plates of the H-shaped steel from top to bottom in sequence;
and an inter-plate upright post is connected between the first opening steel plate and the second opening steel plate, and the shear rigidity, the bearing capacity and the fatigue performance of the connecting structure are obviously improved through the end part pressure bearing of the opening steel plates and the shearing of the inter-plate upright post.
In some embodiments, the surface of the interplate post is provided with an annular rib.
In some embodiments, 9 inter-plate pillars are respectively arranged on two sides of the flange plate of the H-shaped steel.
In some embodiments, the bolt assembly comprises a locking bolt and a locking nut;
the locking bolt sequentially penetrates through bolt mounting holes in the positioning steel plate and the steel beam and is connected with the locking nut, the connecting piece is connected with the steel beam through the bolt assembly, and the steel beam can be recycled after the locking bolt is disassembled.
In some embodiments, a washer is disposed between the lock nut and the steel beam.
In another aspect of the present application, a bridge including the prefabricated steel-concrete composite beam according to the above embodiment is provided, and since the prefabricated steel-concrete composite beam according to the above embodiment is adopted in the bridge, the bridge also has the advantages of the prefabricated steel-concrete composite beam according to the above embodiment, and therefore, the optimization of the bridge is not repeated herein.
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 description of 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 structural diagram of a prefabricated steel-concrete composite beam provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a connection structure provided in an embodiment of the present invention;
fig. 3 is a schematic axial view of a connector according to an embodiment of the present invention;
fig. 4 is a front view of a connector according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 4, in one aspect, the precast assembled steel-concrete composite beam provided by the embodiment of the present application includes a steel beam 1 and a precast concrete plate 2, wherein the precast concrete plate 2 is connected to the steel beam 1 through a connection structure, and the connection structure includes a concrete cast body 3 disposed in a grouting through hole formed in the precast concrete plate 2, and a connection member 4 embedded in the concrete cast body 3 and connected to the steel beam 1.
In the embodiment of the present application, the connection structure for connecting the precast concrete panel 2 with the steel beam 1 includes a concrete cast body 3 and a connection member 4 embedded in the concrete cast body 3, in the construction process of the steel-concrete composite beam, the connecting piece 4 is fixedly arranged on the corresponding position of the steel beam 1, the precast concrete slab 2 is then placed on the steel girder 1 and the grout through hole is aligned with the connection member 4, so that the connecting piece 4 falls into the grouting through hole, concrete is poured into the grouting through hole to form a concrete pouring body 3, the steel beam 1 and the precast concrete plate 2 are connected into a whole to participate in stress together, the precast concrete plate 2 is convenient to install because the grouting through hole avoiding the connecting piece 4 is arranged on the bridge, the connecting structure can not only transmit the longitudinal shearing force between the concrete slab 2 and the steel beam 1, but also resist the lifting action of separating the two.
Referring to fig. 2, the grout through hole is designed in a reverse tapered shape to further prevent the precast concrete plate 2 from being lifted apart from the steel beam 1.
Referring to fig. 1, in some possible embodiments, the connection structures are uniformly spaced along the steel beam 1 in the longitudinal direction to improve the connection strength, and the steel beam 1 may be a general building material i-steel.
It can be understood that the connecting member 4 comprises an H-shaped steel 401, and positioning steel plates 402 are arranged on the outer sides of the flange plates of the H-shaped steel 401, and the positioning steel plates 402 are fixedly connected with the steel beam 1 through bolt assemblies 403.
Specifically, a first open steel plate 404, a second open steel plate 405 and a positioning steel plate 402 are sequentially arranged on the outer sides of the two flange plates of the H-shaped steel 401 from top to bottom, and an inter-plate column 406 is connected between the first open steel plate 404 and the second open steel plate 405. In the embodiment of the application, the shear rigidity, the bearing capacity and the fatigue performance of the connecting structure are obviously improved by the pressure bearing of the end part of the open steel plate and the shearing of the upright post 406 between plates.
In practical application, 9 inter-plate pillars 406 are respectively arranged on two sides of the flange plate of the H-shaped steel 401.
To further improve the mechanical engagement of the connector 4 with the precast concrete slab 2, the surface of the interplate post 406 is provided with an annular rib.
It should be noted that, in some possible embodiments, the bolt assembly 403 includes a locking bolt and a locking nut, the locking bolt passes through the bolt mounting holes on the positioning steel plate 402 and the steel beam 1 in sequence to be connected with the locking nut, and a washer is disposed between the locking nut and the steel beam 1. In this application embodiment, connecting piece 4 is connected with girder steel 1 through bolt assembly 403, can realize girder steel 1 and recycle after dismantling the locking bolt.
In practical design, in order to facilitate the transportation and installation of the precast concrete plate 2, the precast concrete plate 2 may be formed by splicing a plurality of precast concrete plate 2 units.
The installation process of the prefabricated steel-concrete composite beam in the embodiment of the application is as follows:
s1: erecting a steel beam 1
Assembling the steel beam 1 by a cantilever method or a full framing method;
s2: mounting connector 4
The axis of a bolt mounting hole reserved in the connecting piece 4 is superposed with the axis of a bolt mounting hole reserved in the steel beam 1 to complete the positioning of the connecting piece 4, and the connecting piece 4 is firmly connected with the steel beam 1 by using a locking bolt;
s3: hoisting precast concrete board 2
Hoisting the precast concrete plate 2 in place by using a bridge deck crane;
s4: pouring grouting through hole
And after the precast concrete plate 2 is hoisted in place, pouring high-strength concrete into the grouting through hole, and fully vibrating and compacting.
The utility model provides a bridge, this bridge includes the pier and sets up the prefabricated assembled steel-concrete composite beam on the pier, above-mentioned prefabricated assembled steel-concrete composite beam includes girder steel 1 and precast concrete board 2, and precast concrete board 2 passes through connection structure with girder steel 1 to be connected, and connection structure includes concrete placement 3 in the grout through-hole that sets up on precast concrete board 2 and pre-buried in concrete placement 3 and with girder steel 1 connected connecting piece 4.
In the embodiment of the present application, the connection structure for connecting the precast concrete panel 2 with the steel beam 1 includes a concrete cast body 3 and a connection member 4 embedded in the concrete cast body 3, in the construction process of the steel-concrete composite beam, the connecting piece 4 is fixedly arranged on the corresponding position of the steel beam 1, the precast concrete slab 2 is then placed on the steel girder 1 and the grout through hole is aligned with the connection member 4, so that the connecting piece 4 falls into the grouting through hole, concrete is poured into the grouting through hole to form a concrete pouring body 3, the steel beam 1 and the precast concrete plate 2 are connected into a whole to participate in stress together, the precast concrete plate 2 is convenient to install because the grouting through hole avoiding the connecting piece 4 is arranged on the bridge, the connecting structure can not only transmit the longitudinal shearing force between the concrete slab 2 and the steel beam 1, but also resist the lifting action of separating the two.
The above examples are merely illustrative of the present invention clearly and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Nor is it intended to be exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.
Claims (10)
1. Prefabricated assembled steel-concrete composite beam, including girder steel and precast concrete board, precast concrete board with the girder steel passes through connection structure and connects its characterized in that: the connecting structure comprises a concrete casting body arranged in the grouting through hole on the precast concrete plate and a connecting piece which is embedded in the concrete casting body and connected with the steel beam.
2. The prefabricated assembled steel-concrete composite beam of claim 1, wherein: the grouting through hole is in an inverted cone shape.
3. The prefabricated assembled steel-concrete composite beam of claim 1, wherein: the steel beam is I-shaped steel.
4. The prefabricated assembled steel-concrete composite beam of claim 1, wherein: the connecting structures are uniformly arranged along the steel beam at intervals in the longitudinal direction.
5. The prefabricated assembled steel-concrete composite beam as claimed in any one of claims 1 to 4, wherein: the connecting piece comprises H-shaped steel;
positioning steel plates are arranged on the outer sides of the two flange plates of the H-shaped steel;
the positioning steel plate is fixedly connected with the steel beam through a bolt assembly.
6. The prefabricated assembled steel-concrete composite beam of claim 5, wherein: the outer sides of the two flange plates of the H-shaped steel are sequentially provided with a first open steel plate, a second open steel plate and the positioning steel plate from top to bottom;
an inter-plate upright post is connected between the first open steel plate and the second open steel plate.
7. The prefabricated assembled steel-concrete composite beam of claim 6, wherein: the surface of the upright post between the plates is provided with an annular rib.
8. The prefabricated assembled steel-concrete composite beam of claim 6, wherein: and 9 inter-plate stand columns are respectively arranged on two sides of the flange plate of the H-shaped steel.
9. The prefabricated assembled steel-concrete composite beam of claim 5, wherein: the bolt assembly comprises a locking bolt and a locking nut;
and the locking bolt sequentially penetrates through bolt mounting holes in the positioning steel plate and the steel beam and is connected with the locking nut.
10. A bridge, characterized in that: comprising the prefabricated assembled steel and concrete composite beam as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020904106.5U CN212335736U (en) | 2020-05-26 | 2020-05-26 | Prefabricated assembled steel-concrete composite beam and bridge comprising same |
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| CN202020904106.5U CN212335736U (en) | 2020-05-26 | 2020-05-26 | Prefabricated assembled steel-concrete composite beam and bridge comprising same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086459A (en) * | 2021-08-20 | 2022-02-25 | 中交一公局集团有限公司 | Steel-concrete composite beam structure and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086459A (en) * | 2021-08-20 | 2022-02-25 | 中交一公局集团有限公司 | Steel-concrete composite beam structure and construction method |
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