CN212534534U

CN212534534U - Large-span rear anchoring cantilever connection structure

Info

Publication number: CN212534534U
Application number: CN202021027431.4U
Authority: CN
Inventors: 白文彬; 吴金凤; 孙强; 王天明; 尹文茜
Original assignee: Liaoning Provincial Building Design & Research Institute Co ltd
Current assignee: Liaoning Provincial Building Design & Research Institute Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2021-02-12
Anticipated expiration: 2030-06-08

Abstract

The utility model relates to a connection structure is encorbelmented in anchor after large-span includes frame post, upper ledge roof beam and lower frame roof beam, and its technical essential lies in: an upper embedded plate is fixed to the upper portion of the side face of the frame column through an anchor bolt, vertical double rib plates are fixedly welded to the upper embedded plate in a welded mode, an overhanging steel beam end web is inserted into a gap between the vertical double rib plates, the overhanging steel beam end web is a vertical end plate extending out of a middle web of a high-frequency welded I-shaped overhanging steel beam, and an upper portion vertical connecting plate is welded to the middle of the lower surface, opposite to the far end of the frame column, of the overhanging steel beam; the lower part of the side face of the frame column is correspondingly provided with a lower embedded plate fixed through an anchor bolt, the center of the lower embedded plate is welded with a lower vertical connecting plate, a steel supporting assembly is connected between the upper vertical connecting plate and the lower vertical connecting plate through a high-strength bolt, and the steel supporting assembly, the cantilever steel beam and the frame column are supported in a triangular mode. The structure is simple, force transmission is clear, the connection reliability and safety of the rear anchoring cantilever structure are guaranteed, and the technical problem of large-span cantilever member connection is solved.

Description

Large-span rear anchoring cantilever connection structure

Technical Field

The utility model relates to a construction technical field specifically is a connection structure is encorbelmented in anchor behind large-span.

Background

With the development of economy, more and more existing buildings cannot meet the current use requirements of the masses, and various problems are highlighted increasingly, wherein the demand for building area is large. The usable floor area of the existing building is increased, and the problem is solved by adding a cantilever structure on the basis of the original structure. The cantilever structure is widely applied to buildings, and a balcony, a stadium stand, a theater stand and the like are common. With the technology changing day by day, the overhanging scale is larger and larger in the modern buildings, the application modes are more and more, and the method plays an increasingly important role in the creation of building expressive force. For existing buildings with concrete structures, a bar planting technology is usually adopted, and when the span is small, the bar planting can meet the requirements of structural stress and reliability; but when the span is great, the bar planting just can't satisfy the requirement of actual atress, and adopts the bar planting to glue and connect easy ageing, inefficacy of a long time, has the potential safety hazard. Therefore, when the existing building structure is connected with a large-span overhanging structure, how to ensure the structure to be safe and reliable becomes a technical problem at present.

Disclosure of Invention

An object of the utility model is to provide a connection structure is encorbelmented in anchor behind large-span, its simple structure guarantees reliability and the security that the back anchor encorbelments and constructs the connection, solves the difficult technical problem of the component connection of encorbelmenting that increases great span when existing building transformation.

The technical scheme of the utility model is that:

the utility model provides a connection structure is encorbelmented in anchor after large-span, includes the frame post of straight quadrangular prism form, frame post wherein the equal fixedly connected with of three sides upper and lower frame roof beam that corresponds, its technical essential lies in: an upper pre-embedded plate is fixed to the upper portion of the other outer side face of the frame column except the three side faces provided with the upper frame beam through anchor bolts, vertical double rib plates are fixedly welded to the center position of the upper pre-embedded plate, cantilever steel beam end webs are inserted into gaps between the vertical double rib plates and are fastened in a penetrating mode through high-strength bolts, the cantilever steel beam end webs are vertical end plates extending out of a middle web of a high-frequency welding I-shaped cantilever steel beam, and an upper vertical connecting plate is welded to the middle of the lower surface, opposite to the far end of the frame column, of the cantilever steel beam; the lower part of the side face of the frame column is correspondingly provided with a lower embedded plate fixed through an anchor bolt, the center of the lower embedded plate is welded with a lower vertical connecting plate, a steel supporting assembly is connected between the upper vertical connecting plate and the lower vertical connecting plate through a high-strength bolt, and the steel supporting assembly, the cantilever steel beam and the frame column are supported in a triangular mode.

And an upper hoop assembly and a lower hoop assembly which are used for sleeving and fastening the upper embedded plate and the frame column are arranged outside the upper embedded plate.

The hoop assembly is formed by welding two U-shaped assemblies with equal strength, and each U-shaped assembly comprises a U-shaped vertical steel plate which surrounds the attached frame column and U-shaped horizontal steel plates which are welded on the upper end face and the lower end face of the vertical steel plate.

The butt welding seams of the U-shaped components are not on the same straight line.

The steel support component is a double-groove steel group connected through a filling plate.

The utility model has the advantages that:

1. the hoop assembly is welded through the two U-shaped components, and the arrangement of two welding seams on a straight line in the horizontal direction needs to be guaranteed, so that the stress on the same section is prevented from being simultaneously damaged, the shearing stress and the pulling force are effectively resisted and balanced, and the structural rigidity strength is improved.

2. The steel supporting component, the cantilever steel beam and the frame column are connected to form a triangular supporting system, force transmission of the structure is direct and definite, and safety of the extension project is greatly improved.

2. The connection between each part adopts the mode of crab-bolt and welding, and under the condition that double-ribbed plate and cuff have sufficient rigidity, the transmission of horizontal tension, resistance and holistic rigidity have been guaranteed in the crab-bolt connection, make the structure more firm, and life is longer, has reduced the potential safety hazard that the inefficacy caused, has improved the reliability and the durability of extension engineering.

Drawings

FIG. 1 is an elevation view of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a sectional view taken along line B-B of FIG. 1;

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1;

fig. 5 is a schematic structural view of the vertical steel plate 3 in fig. 1.

In the figure: 1. the steel beam cantilever structure comprises a lower frame beam, 2 frame columns, 3 vertical steel plates, 4 horizontal steel plates, 5 upper frame beams, 6 hoop assemblies, 7 anchor bolts, 8 cantilever steel beam end webs, 9 high-strength bolts, 10 vertical double rib plates, 11 upper embedded plates, 12 cantilever steel beams, 13 upper vertical connecting plates, 14 steel support assemblies, 15 filling plates, 16 double channel steel, 17 lower vertical connecting plates and 18 lower embedded plates.

Detailed Description

The technical solution of the present invention is further explained by the following specific embodiments with reference to the accompanying drawings.

As shown in fig. 1-5, the large-span rear anchoring cantilever connection structure includes a frame column 2 in a shape of a straight quadrangular prism, wherein three sides of the frame column 2 are fixedly connected with an upper frame beam 5 and a lower frame beam 1 which correspond to each other up and down, the upper part of the frame column 2 except the other outer side of the three sides provided with the upper frame beam 5 is fixed with an upper embedded plate 11 through an anchor bolt 7, a vertical double ribbed plate 10 is welded and fixed at the center of the upper embedded plate 11, a cantilever steel beam end web plate 8 is inserted into a gap between the vertical double ribbed plates 10 and is fastened through a high-strength bolt 9, the cantilever steel beam end web plate 8 is a vertical end plate extending from a middle web plate of a high-frequency welding cantilever i-shaped cantilever steel beam 12, and an upper vertical connection plate 13 is welded at the middle of the lower surface of the cantilever steel beam 12 relative to the far end of the frame column; the lower part of the side face of the frame column 2 is correspondingly provided with a lower embedded plate 18 fixed through an anchor bolt with the upper embedded plate 11, the center of the lower embedded plate 18 is welded with a lower vertical connecting plate 17, a steel supporting assembly 14 is connected between the upper vertical connecting plate 13 and the lower vertical connecting plate 17 through a friction type high-strength bolt, and a triangular support is formed among the steel supporting assembly 14, the cantilever steel beam 12 and the frame column 2.

In order to improve the structural rigidity strength, the upper embedded plate 11 is externally provided with an upper hoop assembly 6 and a lower hoop assembly 6 which are used for sleeving and fastening the upper embedded plate 11 and the frame column 2.

The hoop assembly 6 is formed by welding two U-shaped assemblies, and each U-shaped assembly comprises a U-shaped vertical steel plate 3 which surrounds the frame column 2 and U-shaped horizontal steel plates 4 which are welded on the upper end face and the lower end face of the vertical steel plate 3.

In order to further improve the structural reliability and safety, butt joint equal-strength welding is adopted, namely butt welding seams of the U-shaped components are not on the same straight line.

During construction, the vertical steel plate 3 is installed firstly, then the horizontal steel plate 4 is welded, the cantilever steel beam 12 is welded with the vertical connecting plate 13, and the double-channel steel 16 is connected and assembled by the filling plate 15 after being subjected to field lofting. During construction, an upper embedded plate 11 and a lower embedded plate 18 are fixed on a frame column 2 through a special inverted-cone-shaped anchor bolt 7 or a mechanical anchor bolt, then 4U-shaped partial sleeve assemblies are spliced and welded pairwise to enable the frame column 2 and the upper embedded plate 11 to be wrapped up and down respectively, then other three surfaces except the upper embedded plate surface are fixed through the anchor bolts 7, then vertical double rib plates 10 are welded at a hoop groove to enable the vertical double rib plates and the structure to form a whole, then a friction-type high-strength bolt 9 is used for connecting a cantilever steel beam 12 which is fixedly spliced through a cantilever steel beam end web plate 8, then a lower vertical connecting plate 17 is welded on the lower embedded plate 18, a steel supporting assembly 14 is connected and fixed between an upper vertical connecting plate 13 and the lower vertical connecting plate 17 through a high-strength bolt 9, and finally the whole structure forms a stable triangular supporting system.

Claims

1. The utility model provides a connection structure is encorbelmented in anchor after large-span, includes the frame post of straight quadrangular prism form, frame post wherein the equal fixedly connected with of three sides upper and lower corresponding last frame roof beam, lower frame roof beam, its characterized in that: an upper pre-embedded plate is fixed to the upper portion of the other outer side face of the frame column except the three side faces provided with the upper frame beam through anchor bolts, vertical double rib plates are fixedly welded to the center position of the upper pre-embedded plate, cantilever steel beam end webs are inserted into gaps between the vertical double rib plates and are fastened in a penetrating mode through high-strength bolts, the cantilever steel beam end webs are vertical end plates extending out of a middle web of a high-frequency welding I-shaped cantilever steel beam, and an upper vertical connecting plate is welded to the middle of the lower surface, opposite to the far end of the frame column, of the cantilever steel beam; the lower part of the side face of the frame column is correspondingly provided with a lower embedded plate fixed through an anchor bolt, the center of the lower embedded plate is welded with a lower vertical connecting plate, a steel supporting assembly is connected between the upper vertical connecting plate and the lower vertical connecting plate through a high-strength bolt, and the steel supporting assembly, the cantilever steel beam and the frame column are supported in a triangular mode.

2. The large-span post-anchor cantilever connection according to claim 1, wherein: and an upper hoop assembly and a lower hoop assembly which are used for sleeving and fastening the upper embedded plate and the frame column are arranged outside the upper embedded plate.

3. The large-span post-anchor cantilever connection according to claim 2, wherein: the hoop assembly is formed by welding two U-shaped assemblies with equal strength, and each U-shaped assembly comprises a U-shaped vertical steel plate which surrounds the attached frame column and U-shaped horizontal steel plates which are welded on the upper end face and the lower end face of the vertical steel plate.

4. The large-span post-anchor cantilever connection according to claim 3, wherein: the butt welding seams of the U-shaped components are not on the same straight line.

5. The large-span post-anchor cantilever connection according to claim 1, wherein: the steel support component is a double-groove steel group connected through a filling plate.