CN211547345U - Assembled steel-UHPC combined structure based on bolted connection - Google Patents
Assembled steel-UHPC combined structure based on bolted connection Download PDFInfo
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- CN211547345U CN211547345U CN201921945453.6U CN201921945453U CN211547345U CN 211547345 U CN211547345 U CN 211547345U CN 201921945453 U CN201921945453 U CN 201921945453U CN 211547345 U CN211547345 U CN 211547345U
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Abstract
The utility model relates to an assembled steel-UHPC integrated configuration based on bolted connection, including girder steel (1), prefabricated ultra high performance concrete panel (2) and bolt shear connector (3), bolt shear connector (3) include bolt (32) and corresponding bolt connection sleeve (31), be equipped with a plurality of mounting holes on girder steel (1), the equidistant a plurality of that has inlayed in bottom of prefabricated ultra high performance concrete panel (2) bolt connection sleeve (31), girder steel (1) is connected through bolt shear connector (3) with prefabricated ultra high performance concrete panel (2). Compared with the prior art, the utility model has the advantages of the durability is strong, stability is high, can use repeatedly.
Description
Technical Field
The utility model belongs to the technical field of civil engineering technique and specifically relates to an assembled steel-UHPC integrated configuration based on bolted connection is related to.
Background
The steel-concrete continuous system bridge has the advantages of good stress performance, convenient construction and few expansion joints, but under the action of the self weight of the structure and the live load of an automobile, the inner support point of the continuous system bridge generates huge negative bending moment, the influence of the self weight of the structure by the continuous system bridge with large span is more sensitive, the increase of the self weight of the structure can further increase the negative bending moment of the inner support point of the continuous bridge, so that the tensile stress of the inner support point area of the continuous bridge is far greater than that of other parts of the bridge, and the cracking risk of the inner support point area is increased.
The ultra-high performance concrete (UHPC) has excellent mechanical properties, and tends to make the bridge building structure large-span and light. However, for a steel-concrete continuous system bridge, a steel-UHPC composite plate is used in the traditional combination, an inner support point still generates a large negative bending moment under the action of the self weight of the structure and the live load of an automobile, and the transverse connection between main bridge panels still has a large cracking risk.
Chinese patent CN201711478668.7 discloses an assembled steel-concrete composite beam shear key, which is formed by pouring bolt holes through secondary pouring holes at a construction site and then connecting the bolt holes with nuts, so that the overall operation procedure is complicated, and corresponding filling plates need to be filled between the nuts and the steel beams, which is high in cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an assembled steel-UHPC integrated configuration based on bolted connection for overcome the defect that the great hogging moment of production, decking exist the fracture risk that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
the assembled steel-UHPC combined structure based on bolted connection comprises a steel beam, a prefabricated ultrahigh-performance concrete (UHPC) panel and a bolt shear connector, wherein the bolt shear connector comprises a bolt and a corresponding bolt connecting sleeve, a plurality of mounting holes are formed in the steel beam, a plurality of bolt shear connectors are embedded into the bottom of the prefabricated ultrahigh-performance concrete panel at equal intervals, and the steel beam and the prefabricated ultrahigh-performance concrete panel are connected through the bolt shear connectors.
Preferably, the bolt connecting sleeve is an elongated nut.
Preferably, the lengthened nut is a lengthened nut with a gasket.
Preferably, the structure of the mounting hole is a round hole type mounting hole.
The number of the round hole type mounting holes is consistent with that of the bolt shear connectors.
Preferably, the structure of the mounting hole is an oblong hole type mounting hole.
The prefabricated ultrahigh-performance concrete panel is laid above the steel beam.
The joint of the steel beam and the prefabricated ultrahigh-performance concrete panel is the bottom of an upper flange of the steel beam.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses well prefabricated UHPC panel bottom embedding area pad extension nut is as the built-in fitting, then connects the bolted connection sleeve of the prefabricated UHPC panel bottom embedding that lays lower part and upper portion through the bolt, reaches and to dismantle connection and reuse, can eliminate the welding stress that traditional manufacturing methods such as stud and steel welding produced simultaneously.
2. The utility model discloses a circular mounting hole can be adopted to the mounting hole, on the corresponding direction of standardized girder steel and prefabricated ultra high performance concrete panel, the hookup location that all the other bolts and bolted connection sleeve section of thick bamboo can be confirmed to the position that only needs two bolts in the location.
3. The utility model discloses a mounting hole can adopt the long circle mounting hole, to non-standardized prefabricated ultra high performance concrete panel, through the mounted hole of long circle can in time adjusting bolt's hookup location, reduces installation error.
4. The utility model discloses a bolt connection sleeve adopts the area to fill up extension nut, and the gasket at top plays the enlarged footing effect, more helps area pad extension nut anchor.
5. The utility model discloses a prefabricated UHPC board component and girder steel structural component can carry out segmental prefabrication back at the mill, transport the job site and assemble, suitable standardization and industrial production.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection between the steel beam and the prefabricated ultra-high performance concrete panel of the present invention;
fig. 3 is a schematic structural view of the shear connector for bolt according to the present invention.
Reference numerals:
1-a steel beam; 2-prefabricating an ultrahigh-performance concrete panel; 3-bolt shear connectors; 31-lengthened nut with pad; 32-bolt.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, an assembled steel-UHPC composite structure based on bolt connection includes a steel beam 1, a prefabricated ultra-high performance concrete panel 2 and a bolt shear connector 3, as shown in fig. 3, the bolt shear connector 3 includes bolts 32 and corresponding bolt connection sleeves 31, a plurality of mounting holes are provided on the steel beam 1, as shown in fig. 2, a plurality of bolt connection sleeves 31 are embedded at equal intervals in the bottom of the prefabricated ultra-high performance concrete panel 2, and the steel beam 1 and the prefabricated ultra-high performance concrete panel 2 are connected through the bolt shear connector 3.
The bolt coupling sleeve 31 is an elongated nut.
The lengthened nut is a lengthened nut with a gasket.
The mounting hole is a round hole type mounting hole.
The number of the round hole type mounting holes is consistent with that of the bolt shear connectors 3.
The structure of the mounting hole is a long round hole type mounting hole.
The prefabricated ultrahigh-performance concrete panel 2 is laid above the steel beam 1.
The joint of the steel beam 1 and the prefabricated ultrahigh-performance concrete panel 2 is the bottom of the upper flange of the steel beam 1.
The water cement ratio of the prefabricated ultra-high performance concrete panel 2 is less than 0.25.
Example one
And fixing the lengthened nut 31 with the pad on a fixed mould in a prefabrication factory, and then performing formwork erecting, pouring and normal-temperature maintenance on the ultrahigh-performance concrete to form the prefabricated UHPC panel with the lengthened nut 31 with the pad embedded at the bottom of the prefabricated UHPC panel 2. Meanwhile, a circular mounting hole is formed in the H-shaped steel beam 1 to be matched with a bolt 32, then the prefabricated UHPC panel whole body 2 and the perforated H-shaped steel beam 1 are transported to a construction site to be hoisted and butted, and then the H-shaped steel beam 1 is connected with the prefabricated UHPC panel 2 through the bolt 32.
Example two
The installation hole on the H-shaped steel beam 1 is an oblong installation hole, and the rest of the embodiment is the same as the embodiment I.
In addition, it should be noted that the specific embodiments described in the present specification may have different names, and the above contents described in the present specification are only illustrations of the structures of the present invention. All minor or simple changes made according to the structure, characteristics and principles of the present invention are included in the protection scope of the present invention. Various modifications or additions may be made to the described embodiments or similar methods may be adopted by those skilled in the art without departing from the scope of the invention as defined in the claims.
Claims (8)
1. The assembled steel-UHPC combined structure based on bolt connection comprises a steel beam (1), a prefabricated ultrahigh-performance concrete panel (2) and a bolt shear connector (3), wherein the bolt shear connector (3) comprises bolts (32) and corresponding bolt connecting sleeves (31), and is characterized in that a plurality of mounting holes are formed in the steel beam (1), a plurality of the bolt connecting sleeves (31) are embedded in the bottom of the prefabricated ultrahigh-performance concrete panel (2) at equal intervals, and the steel beam (1) and the prefabricated ultrahigh-performance concrete panel (2) are connected through the bolt shear connector (3).
2. The assembled steel-UHPC composite structure based on bolt connection as claimed in claim 1, characterized in that the bolt connection sleeve (31) is an extended nut.
3. The assembled steel-UHPC combined structure based on bolted connection of claim 2, characterized in that the extension nut is a cushioned extension nut.
4. The assembled steel-UHPC combined structure based on bolt connection as claimed in claim 1, wherein, the structure of the mounting hole is a round hole type mounting hole.
5. The assembled steel-UHPC based bolt connection combination according to claim 4, characterized in that the number of round hole type mounting holes is the same as the number of bolt shear connectors (3).
6. The assembled steel-UHPC combined structure based on bolt connection of claim 1, characterized in that the structure of the mounting hole is an oblong hole type mounting hole.
7. Assembled steel-UHPC combined structure based on bolted connections according to claim 1, characterised in that the prefabricated ultra high performance concrete panels (2) are laid on top of steel beams (1).
8. The assembled steel-UHPC combined structure based on bolted connection according to claim 7, characterized in that, the junction of steel beam (1) and prefabricated ultra high performance concrete panel (2) is the bottom of the upper flange of steel beam (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921945453.6U CN211547345U (en) | 2019-11-12 | 2019-11-12 | Assembled steel-UHPC combined structure based on bolted connection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921945453.6U CN211547345U (en) | 2019-11-12 | 2019-11-12 | Assembled steel-UHPC combined structure based on bolted connection |
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| CN211547345U true CN211547345U (en) | 2020-09-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863428A (en) * | 2019-11-12 | 2020-03-06 | 同济大学 | Assembled steel-UHPC combined structure based on bolted connection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863428A (en) * | 2019-11-12 | 2020-03-06 | 同济大学 | Assembled steel-UHPC combined structure based on bolted connection |
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