CN218374444U - Square steel tube concrete composite column-local corrugated web steel beam connection node - Google Patents

Abstract

The utility model belongs to building structure engineering field specifically discloses a square steel core concrete composite post-local ripple web girder steel connected node, including steel-pipe column and shaped steel roof beam. The steel pipe column is a partition plate through column and is formed by welding an upper steel pipe, a middle steel pipe, a lower steel pipe, a partition plate and an inner lining pipe, the web connecting piece is welded on the outer surface of the middle steel pipe, the section steel beam is formed by welding a flange and a local corrugated web, the flange and the partition plate are connected in a node mode through a welding line, meanwhile, a reinforcing plate is welded at the joint, and the local corrugated web and the web connecting piece are connected in a node mode through bolts. Compared with the prior art, the novel connecting node can realize outward movement of the plastic hinge through the combined action of the local corrugated web and the reinforcing plate, prevent brittle failure at the joint of the node, and effectively improve the anti-seismic performance and energy consumption capability of the node.

Description

Square steel tube concrete composite column-local corrugated web steel beam connection node

Technical Field

The utility model relates to a building structure engineering field especially relates to a square steel tube concrete composite post-local ripple web girder steel connected node.

Background

China belongs to the countries with frequent earthquakes, and the requirement of higher energy consumption performance is put forward for the design and construction of multi-storey and high-rise buildings. The beam-column connection node is the key influencing the mechanical property of the frame, is acted by axial force, bending moment and shearing force, has a complex force transmission mechanism and is the difficult point and the key point of the structural design.

The steel pipe concrete is the integrated configuration that forms at the inside concrete that fills of steel pipe, and the restraint of steel pipe makes the concrete be in the state of three-dimensional atress, very big improvement the compressive strength of concrete, equally, because the existence of concrete for the steel pipe can not too early emergence bucking. The steel pipe concrete has the characteristics of high bearing capacity, good plasticity and ductility, convenience in construction and the like, and is widely applied to high-rise and super high-rise structures.

The partition plate through type node is one of four rectangular steel pipe concrete column and steel beam connection forms recommended by China due to the characteristics of definite force transfer, simple structure, high factory prefabrication rate and the like, and is widely applied. However, the node is a bolt welding mixed joint node, and under the action of an earthquake, the brittle failure at the welding seam is easy to occur, so that the ductility and the energy consumption capability of the node are poor, and the whole structure collapses. Meanwhile, the brittle failure does not have obvious deformation or other warning signs before the structural failure, and the brittle failure is avoided in the structural design, so that how to avoid the brittle failure of the partition plate through node becomes a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a square concrete filled steel tube combination column-local ripple web girder steel connected node to the technical problem of the easy welding seam department fragility destruction that takes place of baffle through concrete filled steel tube beam column node under the earthquake action that exists among the prior art has been solved.

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

a square concrete-filled steel tube combination column-local corrugated web steel beam connection node comprises a steel tube column and a section steel beam. The steel pipe column is a partition plate through column and is formed by welding an upper steel pipe, a middle steel pipe, a lower steel pipe, a partition plate and a lining pipe, the web connecting piece is welded on the outer surface of the middle steel pipe, the section steel beam is formed by welding a flange and a local corrugated web, the flange and the partition plate are connected in a node mode through a welding line, meanwhile, a reinforcing plate is additionally welded at the joint, and the local corrugated web and the web connecting piece are connected in a node mode through bolts.

Preferably, the connection welding seams of the partition plate, the upper steel pipe, the middle steel pipe, the lower steel pipe and the lining pipe are all full penetration groove welding seams.

Preferably, the thickness and the inner diameter of the upper steel pipe, the middle steel pipe and the lower steel pipe are the same, and the inner diameter of the upper steel pipe, the middle steel pipe and the lower steel pipe is 2mm larger than the outer diameter of the lining pipe.

Preferably, the connecting weld between the local corrugated web and the flange is a full penetration butt weld.

Preferably, the connecting welding seam between the flange and the reinforcing plate and between the flange and the partition plate is a full penetration butt welding seam.

Preferably, the reinforcing plates are welded on two sides of the flange of the beam end and are symmetrically arranged.

Preferably, a first screw hole is reserved on the web connecting piece, and the number and the position of the first screw hole correspond to those of a second screw hole reserved on the local corrugated web.

Preferably, the local corrugated web is formed by welding a first flat web, a second flat web and angle steel, and all the first flat web, the second flat web and the angle steel are full penetration welding seams.

Preferably, the bolt is a friction type high-strength bolt.

Compared with the prior art, the utility model provides a pair of square steel pipe concrete composite post-local ripple web girder steel connected node has following beneficial effect:

the utility model provides a square steel tube concrete composite column-local ripple web girder steel connected node, the edge of a wing and baffle are connected through the welding, add the welding reinforcing plate simultaneously, local ripple web is connected through the bolt with the web connecting piece on the steel-pipe column, the node joint strength is high; all components are prefabricated in a factory, the field workload is low, the connection is easy to operate, the construction process is greatly simplified, and the construction efficiency is improved.

The utility model provides a square steel tube concrete composite post-local ripple web girder steel connected node weakens and consumes energy the node through local ripple web to strengthen beam column joint connection strength within a definite time, the reinforcing plate has been set up, also realized the plasticity hinge and moved outward when realizing the nodal connection, make the plasticity hinge appear near beam flange local ripple web department, the power consumption performance and the anti-seismic performance of node have been promoted, prevent that brittle failure from appearing in the node, the design target of "strong post weak beam", "strong node weak component" has been realized.

The utility model provides a square steel tube concrete composite column-local ripple web steel beam connection node, the local ripple web can make the web hardly bend, so that the flanges at the two ends of the web bear bending moment, the web bears shearing force almost only, thereby the bending resistance bearing capacity of the section of the steel beam is fully exerted; meanwhile, due to the existence of the local corrugated web, the flange can be prevented from being deformed by excessive buckling, and the safety is improved.

Drawings

Fig. 1 is a schematic structural view of a square concrete filled steel tube composite column-local corrugated web steel beam connection node of the present invention;

fig. 2 is a schematic view of a split structure of the square concrete filled steel tube composite column-local corrugated web steel beam connection node of the present invention;

fig. 3 is a front view of a square concrete filled steel tube composite column-local corrugated web steel beam connection node of the present invention;

fig. 4 is a top view of the square concrete filled steel tube composite column-local corrugated web steel beam connection node of the present invention;

fig. 5 is a side view of the square concrete-filled steel tube composite column-local corrugated web steel beam connection node of the present invention;

FIG. 6 is a schematic view of a partial corrugated web;

in the figure: 1. the steel pipe column comprises a steel pipe column 11, an upper steel pipe 12, a middle steel pipe 13, a lower steel pipe 14, a partition plate 15, an inner lining pipe 16, a web connecting piece 17, a first screw hole 2, a section steel beam 21, a flange 22, a local corrugated web 23, a second screw hole 24, a reinforcing plate 220, a first flat web 221, a second flat web 222, angle steel 3 and bolts.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the drawings.

As shown in fig. 1 to 6, the square concrete filled steel tube composite column-local corrugated web steel beam connection node comprises a steel tube column 1 and a section steel beam 2. The steel pipe column 1 is a partition plate through column and is formed by welding an upper steel pipe 11, a middle steel pipe 12, a lower steel pipe 13, a partition plate 14 and an inner lining pipe 15, a web plate connecting piece 16 is welded on the outer surface of the middle steel pipe 12, the section steel beam 2 is formed by welding a flange 21 and a local corrugated web plate 22, the flange 21 is connected with the partition plate 14 through a welding seam in a node mode, meanwhile, a reinforcing plate 24 is welded, and the local corrugated web plate 22 is connected with the web plate connecting piece 16 through a bolt 3 in a node mode.

As shown in fig. 1 and 2, the connection welds of the partition plate 14, the upper steel pipe 11, the middle steel pipe 12, the lower steel pipe 13, and the lining pipe 15 are all full penetration groove welds. The thickness and the inner diameter of the upper steel pipe 11, the middle steel pipe 12 and the lower steel pipe 13 are the same, the inner diameter is 2mm larger than the outer diameter of the lining pipe 16, and the lining pipe 16 is used as a shear resistant connector to enhance the shear resistance of the column and achieve the design target of a strong column and a weak beam. In this embodiment.

As shown in fig. 1 and fig. 2, a first screw hole 17 is reserved on the web connecting member 16, the number and the position size of the first screw hole 17 correspond to a second screw hole 23 reserved on the local corrugated web 22, and the bolt 3 is matched with the first screw hole 17 and the second screw hole 23; in this embodiment, the bolt 3 is a friction-type high-strength bolt.

As shown in fig. 1, 2 and 6, the local corrugated web 22 is formed by welding a first flat web 220, a second flat web 221 and angle steel 222, and all the welding seams are full penetration welding seams, so that the overall strength of the section steel beam can be improved. Due to the existence of the local corrugated web 22, the section steel beam 2 forms a weakening part at the position so as to form a plastic hinge, so that the node consumes energy through the local corrugated web 22 under the action of a reciprocating force load, the stress is concentrated on the local corrugated web, and is not concentrated near the welding seam at the beam end of the node, the outward movement of the plastic hinge is effectively realized, the brittle failure of the node is prevented, and the anti-seismic performance and the energy consumption capability of the component are greatly improved; according to the folding effect of the corrugated web plate, the local corrugated web plate 22 hardly resists bending, the flanges 21 at two ends bear bending moment, and the local corrugated web plate 22 almost only bears shearing force, so that the bending resistance bearing capacity of the section of the steel beam is fully exerted; meanwhile, due to the existence of the local corrugated web plate 22, the upper and lower flanges 21 can be prevented from being excessively buckled and deformed under the action of reciprocating load, and the safety is improved; the connection strength between beam-column joints is enhanced on the premise that the plastic hinge moves outwards, the reinforcing plate 24 is arranged at the beam end, the reliability of the joints is enhanced, and the design target of 'strong joints and weak members' is also met.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a square steel core concrete composite post-local ripple web girder steel connected node, includes steel-pipe column (1), shaped steel roof beam (2) and web connecting piece (16), its characterized in that: the steel-pipe column (1) be the baffle through-column, form by upper portion steel pipe (11), middle part steel pipe (12), lower part steel pipe (13), baffle (14) and interior bushing pipe (15) welding, web connecting piece (16) welding is at middle part steel pipe (12) surface, shaped steel roof beam (2) form by flange (21) and local ripple web (22) welding, flange (21) and baffle (14) carry out the nodal connection through the welding seam, add at the junction and weld reinforcing plate (24) simultaneously, local ripple web (22) and web connecting piece (16) carry out the nodal connection through bolt (3).

2. The square concrete filled steel tube combination column-local corrugated web steel beam connection node of claim 1, wherein: and the connection welding seams of the partition plate (14), the upper steel pipe (11), the middle steel pipe (12), the lower steel pipe (13) and the lining pipe (15) are all full penetration groove welding seams.

3. The square concrete-filled steel tube combination column-local corrugated web steel beam connection node of claim 2, wherein: the thickness and the inner diameter of the upper steel pipe (11), the middle steel pipe (12) and the lower steel pipe (13) are the same, and the inner diameter is 2mm larger than the outer diameter of the lining pipe (15).

4. The square concrete filled steel tube combination column-local corrugated web steel beam connection node of claim 1, wherein: the connecting welding seam between the local corrugated web (22) and the flange (21) adopts a full penetration butt welding seam.

5. The square concrete-filled steel tube combination column-local corrugated web steel beam connection node of claim 1, wherein: and the connecting welding seams among the flanges (21), the reinforcing plate (24) and the partition plate (14) adopt full penetration butt welding seams.

6. The square concrete filled steel tube combination column-local corrugated web steel beam connection node of claim 5, wherein: the reinforcing plates (24) are welded on two sides of the beam end flange (21) and are symmetrically arranged.

7. The square concrete-filled steel tube combination column-local corrugated web steel beam connection node of claim 1, wherein: screw holes I (17) are reserved in the web connecting piece (16), and the number and the position size of the screw holes I correspond to those of screw holes II (23) reserved in the local corrugated web (22).

8. The square concrete-filled steel tube combination column-local corrugated web steel beam connection node of claim 1, wherein: the local corrugated web (22) is formed by welding a first flat web (220), a second flat web (221) and angle steel (222), and all the parts are full penetration weld joints.

9. The square concrete filled steel tube combination column-local corrugated web steel beam connection node of claim 1, wherein: the bolt (3) is a friction type high-strength bolt.

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