CN207144181U - The attachment structure of assembly concrete-filled steel tube post and girder steel - Google Patents

Abstract

The utility model discloses a connection structure between an assembled steel pipe concrete column and a steel beam, which belongs to the technical field of steel-concrete structures in construction engineering. The connection structure between the steel pipe concrete column and the steel beam is that the steel beam is connected to the outer peripheral surface of the steel pipe concrete column; among them, the steel pipe concrete column is composed of the outer steel pipe filled with concrete; the cross section of the outer steel pipe is rectangular steel pipe, square steel pipe, regular hexagonal steel pipe Shaped or circular; the steel beam is connected with the opposite outer peripheral surface of the outer steel pipe and the outer peripheral surfaces perpendicular to each other. During on-site assembly, the beam flange and angle steel are connected by bolts, the beam web and shear plate are connected by bolts, and the beam flange and cover plate are connected by bolts. The utility model can realize that components are prefabricated in a factory, and only bolts are assembled on the construction site without welding, and assembly construction and large-scale production can be realized, and the bearing capacity of joints can be improved by making full use of inner filling concrete.

Description

Connection structure of prefabricated concrete filled steel tube columns and steel beams

technical field

The utility model belongs to the technical field of steel-concrete structures in construction engineering, in particular to a connection structure between an assembled steel pipe concrete column and a steel beam.

Background technique

The application of rectangular concrete-filled steel tube columns in multi-storey high-rise buildings is gradually increasing. With the development of economy and society, the demand for rapid construction and large-scale production of multi-storey high-rise buildings is increasing. The traditional rectangular concrete-filled steel tube column and steel beam joints are mainly welded on site. The construction speed is slow and the construction energy consumption is high, which is not conducive to the realization of assembly construction and large-scale production. The transmission of the joint is usually realized by the bending of the column wall plate, and the inner filling concrete cannot be fully utilized to improve the bearing capacity of the joint; at the same time, the seismic performance of the joint is greatly affected by the quality of the on-site welding. How to realize the full assembly between rectangular concrete filled steel tube columns and steel beams in high-rise buildings on the basis of making full use of the inner filling concrete to ensure the joint bearing capacity is a problem that needs to be solved urgently in engineering practice.

Utility model content

The purpose of this utility model is to propose a connection structure between an assembled concrete-filled steel pipe column and a steel beam in view of the deficiencies in the prior art. The outer peripheral surface of the steel pipe; wherein, the concrete filled steel pipe column is composed of concrete filled in the outer steel pipe; the cross section of the outer steel pipe is a rectangular steel pipe, a square steel pipe, a regular hexagon or a circle; the steel beam is connected and connected to the outer peripheral surface of the outer steel pipe A connection with another relative outer peripheral surface that is perpendicular to the outer peripheral surface; specifically, in the middle of a pair of outer peripheral surfaces on the outer side of the outer steel pipe, the distance between the height of the steel beam, the upper and lower angle steels are arranged horizontally, and angle steel stiffeners are set or not set on the angle steel; The two outer peripheral surfaces and the corresponding positions of the angle steel are provided with two steel rod through holes side by side. The high strength steel rod penetrates the angle steel, the outer steel pipe and the cover rib through the steel rod through hole; the high strength steel rod and the outer steel pipe are connected by welding or not. connection; the high-strength steel rod and the angle steel are connected by welding or by anchoring; and a shear plate is vertically arranged between the two angle steels on the outer circumference of the outer steel pipe, and the shear plate and the outer steel pipe are connected by bolts or welds; The beam and the shear plate are connected by bolts; secondly, on the outer side of the outer steel pipe and the middle of the two outer peripheral surfaces perpendicular to the two outer peripheral surfaces welded with angle steel, the upper and lower cover plates are arranged horizontally at the distance of the height of the steel beam; the cover plate It is connected with the outer peripheral surface of the outer steel pipe through welds; a longitudinal long groove is opened on the outer peripheral surface between the two ends of the outer steel pipe and the cover plate, and the rib plate of the cover plate penetrates the outer steel pipe through the longitudinal long groove, and is connected with the outer peripheral surface of the outer steel pipe and the cover plate Connected by welds; two steel rod through holes are opened on the rib plate of the cover plate; a shear plate is vertically arranged on the outer peripheral surface between the upper and lower cover plates, and the shear plate and the outer steel pipe are connected by bolts or welds, and the shear plate It is connected with the outer steel pipe by bolts or welds; the steel beam is connected with the shear plate by bolts.

The steel beams are connected to the four surfaces of the outer steel pipe in a cross-orthogonal manner, or to two opposite surfaces, or to two mutually perpendicular surfaces, or to one surface.

The high-strength steel rods are replaced by steel rods or steel cables.

Bolt holes are reserved on the angle steel, cover plate and shear plate.

The steel beam is composed of welded beam flanges at both ends of the beam web; bolt holes are reserved on the beam flange and the beam web.

During on-site assembly, the beam flange and the angle steel are connected by bolts, the beam web and the shear plate are connected by bolts, and the beam flange and the cover plate are connected by bolts.

Beneficial effects of the utility model: the node can be prefabricated in the factory, only bolts are assembled on the construction site without welding, assembly construction and large-scale production can be realized, and the bearing capacity of the node can be improved by fully utilizing the inner filling concrete. The present invention has the following characteristics:

(1) Beam and column components can be prefabricated in the factory, and only bolt splicing is required on site without welding, which is convenient for rapid construction and can avoid adverse effects of site welding defects on the seismic performance of joints;

(2) It can be applied to the case of CFST column-steel beam space joints with beam connections in two vertical directions.

(3) The tension of the tension flange of the beam is transmitted to the wall panels on both sides of the outer steel pipe through high-strength steel rods and auxiliary ribs, and the bearing capacity of the joints can be improved by filling concrete.

(4) The bearing capacity, stiffness, and yield mode of the joint can be adjusted by adjusting the number and arrangement of bolts, bolt specifications, angle steel specifications, and sub-cover specifications to improve the ductility and seismic performance of the joint.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of a rectangular steel pipe concrete column and a steel beam assembled connection structure.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is the front view of Fig. 1,

Figure 4 is a side view of Figure 1,

Fig. 5 is a sectional view of 1-1 in Fig. 2,

Fig. 6 is a cross-sectional view along line 2-2 of Fig. 2 .

Detailed ways

The utility model relates to a connection structure between an assembled steel pipe concrete column and a steel beam. Be described below in conjunction with accompanying drawing.

Figure 1 is a schematic perspective view of the assembled connection structure of rectangular steel pipe concrete columns and steel beams. In the figure, the connection structure between the steel pipe concrete column and the steel beam is that the steel beam is connected on the outer peripheral surface of the steel pipe concrete column; the cross section of the outer steel pipe 11 is a rectangular steel pipe, a square steel pipe, a regular hexagonal steel pipe or a circular steel pipe; The beam is formed by welding the beam flange 21 at the two ends of the beam web 22;

The steel beams are connected to the four surfaces of the outer steel pipe in a cross and orthogonal direction, or to two opposite surfaces, or to two mutually perpendicular surfaces, or to one surface. In this embodiment, the steel beams are connected on the relative outer peripheral surfaces of the outer steel pipe 11 and the outer peripheral surfaces perpendicular to each other, that is, the four faces of the outer steel pipes are cross-orthogonally connected; on the outer side of the outer steel pipe, the distance between the height of the steel beams , the upper and lower angle steels 13 are arranged horizontally, and the angle steel stiffeners 14 are arranged or not provided on the angle steel 13; two steel rod through holes 16 are set side by side at the corresponding positions of the two outer peripheral surfaces and the angle steel 13, and the high strength steel rod 15 passes through the steel rod through holes 16 runs through the angle steel 13, the outer steel pipe 11 and the cover plate rib 18; the high-strength steel rod 15 and the outer steel pipe 11 are connected by welding or not; the high-strength steel rod 15 and the angle steel 13 are connected by welding or by anchoring Connect; and between two angle steels 13 of outer steel pipe 11 peripheries, shear plate 19 is vertically set, and shear plate 19 is connected with outer steel pipe 11 by bolt or weld; Steel girder and shear plate 19 are connected by bolt (as shown in Figure 2 , 3, 4 shown).

On the outer side of the outer steel pipe 11, which is perpendicular to the two outer peripheral surfaces welded with the angle steel 13, in the middle of the other two outer peripheral surfaces, the upper and lower cover plates 17 are horizontally arranged at the distance of the height of the steel beam; the cover plate 17 passes through the outer peripheral surface of the outer steel pipe 11 Weld seam connection; open a longitudinal long groove on the outer peripheral surface between the two ends of the outer steel pipe 11 and the cover plate 17, the cover plate rib 18 penetrates the outer steel pipe 11 through the longitudinal long groove, and connects with the outer peripheral surface of the outer steel pipe 11 and the cover plate 17 It is connected by welding seam; two steel rod through holes 16 are set on the cover plate rib 18; a shear plate 19 is vertically arranged on the outer peripheral surface between the upper and lower cover plates 17, and the shear plate 19 and the outer steel pipe 11 are connected by bolts or welding. The shear plate 19 and the outer steel pipe 11 are connected by bolts or welds; the steel beam and the shear plate 19 are connected by bolts (as shown in Figures 2, 3, and 4).

The high-strength steel rod 15 is replaced with a steel bar or a steel cable. Bolt holes are reserved on the angle steel 13, the cover plate 17, and the shear plate 19.

During on-site assembly, the beam flange 21 is connected to the angle steel 13 by bolts, the beam web 22 is connected to the shear plate 19 by bolts, and the beam flange 21 is connected to the cover plate 17 by bolts.

Claims (5)

1. a connection structure of fabricated steel pipe concrete column and steel beam, is characterized in that, the connection structure of described steel pipe concrete column and steel beam is that steel beam is connected on the peripheral surface of steel pipe concrete column; Wherein, steel pipe concrete column is made of Concrete is filled inside the outer steel pipe; the cross-section of the outer steel pipe is rectangular steel pipe, square steel pipe, regular hexagon or circular; the steel beam is connected on one relative outer peripheral surface of the outer steel pipe and the other relative outer peripheral surface perpendicular to the relative outer peripheral surface ; Specifically, in the middle of one of the two outer peripheral surfaces on the outer side of the outer steel pipe, the distance between the height of the steel beam, the upper and lower angle steels are arranged horizontally, and the angle steel stiffeners are set or not set on the angle steel; Two steel rod through holes, the high-strength steel rod penetrates the angle steel, the outer steel pipe and the cover rib through the steel rod through hole; the high-strength steel rod and the outer steel pipe are connected by welding or not; the high-strength steel rod and the angle steel pass Welding seam connection or connection by anchoring; and a shearing plate is vertically set between two angle steels on the outer circumference of the outer steel pipe, and the shearing plate and the outer steel pipe are connected by bolts or welds; the steel beam and the shearing plate are connected by bolts; secondly, On the outer side of the outer steel pipe, which is perpendicular to the two outer peripheral surfaces welded with angle steel, and in the middle of the other two outer peripheral surfaces, the upper and lower cover plates are arranged horizontally at the distance of the height of the steel beam; the cover plate is connected with the outer peripheral surface of the outer steel pipe through welds; Longitudinal grooves are opened on the outer peripheral surface between the two ends of the steel pipe and the cover plate, and the rib plate of the cover plate penetrates the outer steel pipe through the longitudinal long groove, and is connected with the outer peripheral surface of the outer steel pipe and the cover plate through welds; on the rib plate of the cover plate Two steel bar through holes are opened; shear plates are vertically arranged on the outer peripheral surface between the upper and lower cover plates, and the shear plates and the outer steel pipes are connected by bolts or welds; the shear plates and the outer steel pipes are connected by bolts or welds; Beams and shear plates are connected by bolts. 2. The connection structure between the prefabricated steel pipe concrete column and the steel beam according to claim 1, characterized in that, the steel beam is connected to the four faces of the outer steel pipe in a cross orthogonal manner, or connected to two opposite faces, or Join with two faces perpendicular to each other, or join with one face. 3. The connection structure between the prefabricated steel pipe concrete column and the steel beam according to claim 1, characterized in that the high-strength steel rods are replaced by steel rods or steel cables. 4. The connection structure between the prefabricated concrete filled steel pipe column and the steel beam according to claim 1, characterized in that bolt holes are reserved in the angle steel, cover plate and shear plate. 5. according to the connection structure of the said prefabricated steel pipe concrete column and steel beam of claim 1, it is characterized in that, said steel beam is made up of beam flange welded at the two ends of beam web; Said beam flange, beam web are reserved Bolt holes; when assembling on site, connect the beam flange and angle steel through bolts, connect the beam web and shear plate through bolts, and connect the beam flange and cover plate through bolts.