CN215716098U - Full bolt connection stub beam formula beam column node structure - Google Patents

Abstract

The utility model discloses a full-bolted short beam type beam-column joint structure which comprises a steel column and an H-shaped steel beam assembly, wherein the H-shaped steel beam assembly comprises a short beam section and a steel beam section, one end of the short beam section is fixedly connected with the steel column, a connecting plate assembly is arranged between the other end of the short beam section and the steel beam section, and at least two rows of bolt groups are arranged on the connecting plate assembly corresponding to the steel beam to realize full-bolted connection between the steel beams. C-shaped folding pieces are welded at the upper end of the H-shaped steel beam assembly in advance. The utility model adopts the matched special full bolt connection and the matched pre-welded C-shaped folding piece, thereby not only realizing the rapid installation without welding, but also solving the problem that the beam slab is not tightly attached.

Description

Full bolt connection stub beam formula beam column node structure

Technical Field

The utility model relates to a steel structure, in particular to a fully-bolted short beam type beam-column joint structure.

Background

In recent years, as socio-economic development continues, assembled substations are increasingly used in order to satisfy electrical loads and improve power supply capacity. Compared with a conventional transformer substation, the assembled transformer substation has the advantages of small occupied area, short construction period, low manufacturing cost, no noise, no radiation, no maintenance, environmental protection and the like.

At present, a steel structure system is mostly adopted in a building in an assembly type transformer substation, short beams are all bolted between steel beams, a roof bottom die is directly placed on the beams, and the problem that gaps exist in the attachment between the short beams and a floor slab due to the existence of flange connecting plates, namely the attachment problem exists between a concrete slab bottom die and the steel beams can be seen.

For example, a "full bolt assembly type node connecting member" disclosed in chinese patent literature, publication No. CN208501890U, includes a closed square body, at least two lateral surfaces of the square body are fixed with lateral flanges at upper and lower ends thereof; a first screw hole connected with the external steel beam is formed in the flange; one or more flanges are provided with a triangular connecting piece connected with the external upright post, and the triangular connecting piece is provided with a second screw hole connected with the external upright post; through sealing the tetragonal body, two at least side surface upper ends and lower extreme all are fixed with horizontal edges of a wing on the tetragonal body, are provided with the triangle connecting piece that outside stand connected on one or more edges of a wing, realize interconnect between girder steel and the stand on the modularization box, do not consider the laminating problem between girder steel, stand and the floor yet, use the scene and be restricted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problem of the joint between the fully-bolted steel beam and the floor in the prior art, and provides a fully-bolted short beam type beam-column joint structure.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a full-bolted short beam type beam-column joint structure comprises a steel column and an H-shaped steel beam assembly, and is characterized in that the H-shaped steel beam assembly comprises a short beam section and a steel beam section, one end of the short beam section is fixedly connected with the steel column, and the other end of the short beam section is connected with the steel beam section through a bolt; the upper end of the H-shaped steel beam component is provided with a C-shaped folding part. The floor slab is closely attached to the steel beam through the C-shaped folding part and transmits load to the beam. The steel column can be a box section steel column or an H section steel column. The short beam section is fixedly connected with the steel column in a prewelding mode.

Preferably, the short beam section and the steel beam section both comprise two flange plates and a web plate, the two flange plates are arranged in an up-and-down parallel mode, and the web plate is vertically arranged between the two flange plates along the length direction. The upper flange plate and the lower flange plate have the same size, and the web plate is arranged on the central axis of the flange plates. The short beam section and the steel beam section have the same cross section size.

Preferably, the C-shaped folding part comprises a top plate and two side plates, the upper ends of the side plates are vertically and fixedly connected with the two ends of the top plate, and the lower ends of the side plates are pre-welded on an upper flange plate of the H-shaped steel beam assembly. The height of the C-shaped folding piece is 50-70mm, and the thickness of the C-shaped folding piece is 5-8 mm. One side of C type book piece roof curb plate dorsad and the unilateral bolted connection of floor accessible turn-shear type can realize the unilateral installation, and the unilateral is screwed up. Prewelding C type when factory production is rolled over the piece and then need carry out welding construction when having avoided the installation, promotes the installation effectiveness. Because the height of the folding part is only 50-70mm, stable damage can not be considered in the load transfer process, the yield strength of steel can be fully utilized to transfer load, and the structural problem caused by the connecting plate at the rigid connection position of the beam column can be better solved by combining the advantages of the unilateral bolt on the closed cross section.

Preferably, a connecting plate assembly is arranged between the short beam section and the steel beam section, and the connecting plate assembly comprises two first connecting plates, four second connecting plates and two web connecting plates. The connecting plate component is matched with the steel beam to customize various sizes, so that the mounting structures are matched tightly, stably and firmly.

Preferably, the short beam section and the steel beam section are connected through three connection areas, namely an upper flange connection area, a web connection area and a lower flange connection area, the upper flange connection area and the lower flange connection area respectively comprise a first connection plate, two second connection plates and a plurality of rows of bolt groups, and the web connection area comprises two web connection plates and a plurality of rows of bolt groups. The stability that local joint strength is not enough and then influence overall structure has been avoided in the multizone connection.

Preferably, the web connecting plate is provided with at least two rows of bolt groups corresponding to the short beam section and the steel beam section respectively. The size of the connecting area is determined according to actual stress, and a plurality of rows of bolt groups or bolts with larger size can be additionally arranged in the connecting area.

Preferably, the first connecting plates are arranged on one side of the flange plate back to the web plate in parallel, the second connecting plates are arranged on the other side of the flange plate in parallel, and the two second connecting plates clamp the web plate. Both sides all set up the connecting plate about the edge of a wing joining region for the girder steel can not be impaired when the bolt joint, and the joining region structure is more stable.

Preferably, the two web connecting plates are arranged on two sides of the web in parallel. Both sides all set up the connecting plate about the web joining region for the girder steel can not be impaired when the bolt joint, and the joining region structure is more stable, and the wholeness is good.

Therefore, the utility model has the following beneficial effects: (1) the full-bolt connection between the steel beams is realized through the connecting piece assembly, the purpose of welding-free assembly is achieved, the installation is rapid, and the steel is not easy to lose due to welding; (2) the C-shaped folding part is welded at the upper end of the steel beam in advance, so that the problem of beam-plate lamination caused by the connecting part is solved, and the structure is stressed uniformly and stably.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a side sectional view of the present invention.

In the figure: 1. steel column 2, short beam section 3, connecting plate subassembly 31, first connecting plate 32, second connecting plate 33, web connecting plate 4, girder steel section 5, bolt assembly 6, building carrier plate 7, unilateral bolt 8, C type book piece.

Detailed Description

The utility model is further described with reference to the following detailed description and accompanying drawings.

In the embodiment shown in fig. 1 and 2, a fully-bolted short beam type beam-column node structure comprises a steel column 1 and an H-shaped steel beam assembly, wherein the H-shaped steel beam assembly comprises a short beam section 2 and a steel beam section 4, one end of the short beam section 2 is fixedly connected with the steel column 1, and the other end of the short beam section 2 is connected with the steel beam section 4 through a bolt; the upper end of the H-shaped steel beam component is provided with a C-shaped folding part 8. In this embodiment, the steel column 1 is a box-section steel column. The short beam section 2 and the steel column 1 are fixedly connected in a prewelding mode. Short beam section 2 and girder steel section 3 all include two flange boards and a web, parallel arrangement about two flange boards, and the web is along the vertical setting of length direction between two flange boards. In this embodiment, the upper and lower flange plates are the same in size, and the web plate is provided at the position of the central axis of the flange plate. The short beam section and the steel beam section have the same cross section size. The C-shaped folding part 8 comprises a top plate and two side plates, the upper ends of the side plates are fixedly connected with the two ends of the top plate in a vertical mode, and the lower ends of the side plates are welded on an upper flange plate of the H-shaped steel beam assembly in advance. In this embodiment, the height of the C-shaped folding member 8 is 70mm, the thickness thereof is 5mm, and the peripheral width thereof is the same as the width of the flange plate. The height of the folding part is only 70mm, stable damage can not be considered in the load transfer process, the yield strength of steel can be fully utilized to transfer load, the advantages of a single-side bolt on the closed cross section are combined, and the structural problem caused by the connecting plate at the beam column rigid connection position can be better solved. One side of the top plate, which is back to the side plate, is connected with the floor bearing plate 6 through a torsional shear type unilateral bolt 7. Be equipped with connecting plate subassembly 3 between short beam section 2 and the girder steel section 4, the connecting plate subassembly includes two first connecting plates 31, four second connecting plates 32 and two web connecting plates 33. The connection between short beam section 2 and girder steel section 4 includes three joining region, is top flange joining region, web joining region and lower flange joining region respectively, and top flange joining region and lower flange joining region respectively include a first connecting plate 31 and two second connecting plates 32 and a plurality of row bolt group 5, and the web joining region includes two web connecting plates 33 and a plurality of row bolt group 5. The web connecting plate 33 is provided with at least two rows of bolt groups 5 corresponding to the short beam sections 2 and the steel beam sections 4 respectively. The first connecting plate 31 is arranged on one side of the flange plate back to the web plate in parallel, the second connecting plate 32 is arranged on the other side of the flange plate in parallel, and the web plate is clamped by the two second connecting plates. Two web connecting plates 33 are arranged on two sides of the web in parallel.

When full bolt joint stub formula beam column node structure was used to assembled transformer substation, constructor installed the beam column of prewelding the stub beam section earlier, promoted girder segment and connecting plate subassembly to predetermineeing the mounted position, adjusted the counterpoint in the mounting end of stub beam section with the link butt of girder segment, carries out the connecting plate setting of web joining region after the completion of counterpointing, sets up to accomplish and inserts the bolt and fix with the spanner. After the fixation is completed, the constructor checks the torque value by using a torque wrench. And repeating the method to finish bolt fixing and torque checking of the upper flange connection area and the lower flange connection area. When carrying out follow-up assembly, constructor directly places the building carrier plate on the piece is rolled over to the C type on the roof beam, at the building carrier plate with roll over the joint site trompil of piece to put into one-way bolt, use electric spanner to screw up, the reuse torque wrench checks the torque value, the installation is accomplished.

Claims (8)

1. A full-bolted short beam type beam-column joint structure comprises a steel column and an H-shaped steel beam assembly, and is characterized in that the H-shaped steel beam assembly comprises a short beam section and a steel beam section, one end of the short beam section is fixedly connected with the steel column, and the other end of the short beam section is connected with the steel beam section through a bolt; the upper end of the H-shaped steel beam component is provided with a C-shaped folding part.

2. The fully-bolted short beam type beam-column joint structure as claimed in claim 1, wherein each of the short beam section and the steel beam section comprises two flange plates and a web plate, the two flange plates are arranged in parallel up and down, and the web plate is vertically arranged between the two flange plates along the length direction.

3. The fully-bolted short beam type beam-column joint structure as claimed in claim 1 or 2, wherein the C-shaped folding member comprises a top plate and two side plates, the upper ends of the side plates are vertically and fixedly connected with the two ends of the top plate, and the lower ends of the side plates are pre-welded on the upper flange plate of the H-shaped beam assembly.

4. The fully-bolted short beam type beam-column joint structure as claimed in claim 1, wherein a connecting plate assembly is arranged between the short beam section and the steel beam section, and the connecting plate assembly comprises two first connecting plates, four second connecting plates and two web connecting plates.

5. The fully-bolted short beam type beam-column joint structure as claimed in claim 4, wherein the connection between the short beam section and the steel beam section comprises three connection areas, namely an upper flange connection area, a web connection area and a lower flange connection area, the upper flange connection area and the lower flange connection area respectively comprise a first connection plate, two second connection plates and a plurality of rows of bolt groups, and the web connection area comprises two web connection plates and a plurality of columns of bolt groups.

6. The fully-bolted short beam type beam-column joint structure as claimed in claim 5, wherein said web connecting plate is provided with at least two rows of bolt sets corresponding to the short beam sections and the steel beam sections, respectively.

7. The fully-bolted short-beam-column joint structure as claimed in claim 5, wherein said first connecting plates are arranged in parallel on the side of the flange plate facing away from the web, and said second connecting plates are arranged in parallel on the other side of the flange plate, and the two second connecting plates clamp the web.

8. The fully-bolted short beam type beam-column joint structure as claimed in claim 5, wherein said two web connecting plates are arranged in parallel on both sides of the web.

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