CN204163196U - A kind of embedded concrete-filled steel square tubular column in T-steel top flange and steel beam connecting joint - Google Patents

Abstract

The utility model relates to a connection node between a square steel pipe concrete column embedded in a T-shaped steel upper flange and a steel beam, and belongs to the technical field of building structure engineering. It is composed of square concrete-filled steel tube columns, steel beams, T-shaped steel and high-strength bolts; a horizontal groove is set at the position of the upper flange of the T-shaped steel on the wall plate of the square steel-filled steel tube concrete column, and the size is the same as the width of the upper flange of the T-shaped steel. The channel where the flange is embedded in the wall plate of the square concrete-filled steel tube column; the upper flanges of the corresponding T-shaped steel on both sides of the square steel tube concrete column are on the same horizontal plane, and the T-shaped steel web is directly welded to the wall plate of the square concrete-filled steel tube column, and The T-shaped steel web on both sides of the square concrete-filled steel tube column is connected with the square concrete-filled steel tube column with high-strength bolts; the upper and lower T-shaped steel flanges and the steel beam are also connected with high-strength bolts, and the bolt heads are double nut. The utility model has the advantages of simple node structure, convenient processing and installation, clear and reliable force transmission, and adapts to the needs of industrialized production.

Description

A connection node between a T-shaped steel upper flange embedded square steel pipe concrete column and a steel beam

technical field

The utility model relates to the field of construction engineering, in particular to a connection node between a square steel tube concrete column embedded in a T-shaped steel upper flange and a steel beam.

Background technique

With the development of building structures, the research and application of steel-concrete composite structures has been rapidly developed, and has become a recognized new structural system, which is juxtaposed with steel structures, wood structures, masonry structures and reinforced concrete structures, and Expanded to become the fifth largest structure. The steel-concrete composite structure gives full play to the material mechanical properties of the concrete under pressure and the steel under tension. Secondly, the application of steel is also conducive to reducing the excessive cross-section of the concrete structure, and the strong effect of the concrete material on the steel can reduce the steel structure. Requirements for fire protection. In addition, the above combined structure is also beneficial to the improvement of the anti-seismic performance. At present, steel-concrete composite structures, that is, steel-concrete composite structures, are widely used in many countries, and the domestic development is relatively rapid.

Steel-concrete composite structures are mostly used in concrete-filled steel pipe structures. The so-called concrete-filled steel pipe structures are filled with concrete and compacted to increase the strength and rigidity of the steel pipes. This structure makes full use of the advantages of steel pipe and concrete, and has the advantages of high bearing capacity, good plasticity and toughness, and convenient construction. It is widely used in single-story and multi-story industrial factory columns, high-rise buildings and bridges. middle. Especially in recent years, with the promotion and application of residential steel structures, the frame structure system formed by steel pipe concrete columns and steel beams has been gradually applied and developed in engineering practice, and has achieved good economic and social benefits.

At present, the joint forms of the square concrete filled steel tube columns and steel beams in my country mainly include the outer diaphragm type, the inner diaphragm type and the diaphragm through type. Among them, the through-type joint of the diaphragm requires that the square steel tube concrete column be cut off at the corresponding position of the upper and lower flanges of the steel beam, and the original square steel pipe is re-welded after the transverse diaphragm is welded at the corresponding position. The construction of this kind of joint is complicated, and the weld seam is relatively concentrated, so it is rarely used in our country. the

Utility model content

The task of the utility model is to solve the technical defects existing in the joints of square concrete filled steel pipe columns and steel beams in the prior art, and provide a connection joint between square steel filled concrete columns and steel beams embedded in the upper flange of T-shaped steel.

Its technical solutions are:

A connection node between a square concrete-filled steel tube column embedded in the upper flange of T-shaped steel and a steel beam, including a square concrete-filled steel tube column, a steel beam, T-shaped steel, and high-strength bolts; T-shaped steel is located on both sides of the square steel pipe, and a horizontal groove is opened on the wall plate of the square steel pipe at the position of the upper flange of the T-shaped steel. The size is the same as the width of the upper flange of the T-shaped steel. The channel where the edge is embedded in the wall plate of the square steel pipe; the upper flanges of the corresponding T-shaped steel on both sides of the square steel pipe are on the same horizontal plane, the web of the T-shaped steel is directly welded to the wall plate of the square steel pipe, and the T-shaped steel flange on both sides of the square steel pipe The steel web and the square steel pipe are connected through high-strength bolts; one end of the steel beam is inserted between the upper and lower flanges of the T-shaped steel, and the upper and lower flanges of the T-shaped steel and the steel beam are passed through High-strength bolt connection, while the bolt head adopts double nuts.

In the utility model, the steel beam is a hot-rolled H-shaped steel beam or a welded H-shaped steel beam.

In the present invention, the concrete is ordinary concrete, high-strength concrete or self-compacting concrete.

The utility model has the following beneficial technical effects:

The utility model has the advantages of simple node structure, convenient processing and installation, clear and reliable force transmission, and adapts to the needs of industrialized production.

Compared with the internal diaphragm type joint, the utility model has good mechanical performance, and the upper flange of the T-shaped steel is embedded in the concrete column, which has semi-rigid characteristics, further enhances the joint's mechanical performance, and improves the joint's shear resistance capacity and resistance to bending moments.

In the utility model, the T-shaped steel webs on both sides of the square concrete-filled steel pipe column are connected with the square concrete-filled steel pipe column by high-strength bolts, which function as internal partitions and can effectively transmit the tension of the upper and lower flanges of the steel beam. and pressure; Compared with the joint form of the outer partition, it has the advantages of direct force transmission, saving steel, and ensuring building space.

The joint is simple in structure, convenient on site, and saves steel. The bending moment bearing capacity of the joint is controlled by controlling the size of the connecting piece and the number of high-strength bolts, so that the joint has better plastic rotation capacity, and can be better under the action of earthquakes. Dissipate energy to realize the design concept of ductile joints.

Description of drawings

Figure 1 is a schematic diagram of the front elevation of the square steel pipe concrete column and steel beam joint;

Fig. 2 is a horizontal top view diagram of a square steel pipe concrete column and a steel beam joint;

Labels in the figure: 1-square steel pipe, 2-high-strength bolt, 3-steel beam, 4-T-shaped steel, 5-concrete. the

Detailed ways

With reference to accompanying drawing, the utility model is described further:

Example:

A T-shaped steel upper flange-embedded square concrete-filled steel tube column and steel beam connection joint, which is composed of a square steel-filled steel tube concrete column, steel beam, T-shaped steel and high-strength bolts. It is a new type of joint with simple structure, clear force transmission and simple construction. form. Described square steel pipe concrete column comprises square steel pipe 1 and the concrete 5 of inner perfusion; Described T-shaped steel 4 comprises upper flange and web; The transverse groove, whose size is the same as the width of the upper flange of T-shaped steel 4, serves as a channel for the upper flange of T-shaped steel 4 to be embedded in the wall plate of square steel pipe 1; the upper flanges of T-shaped steel 4 corresponding to both sides of square steel pipe 1 are on the same horizontal plane On the top, the T-shaped steel 4 webs are directly welded on the wall plate of the square steel pipe 1 column, and the T-shaped steel 4 webs on both sides of the square steel pipe 1 column and the square steel pipe 1 are connected by high-strength bolts 2; The lower T-shaped steel flange 4 and the steel beam 3 are also connected with high-strength bolts 2, and the bolt heads adopt double nuts at the same time.

The steel beam 3 is an H-shaped steel beam. The concrete 5 is any one of ordinary concrete, high-strength concrete or self-compacting concrete.

Relevant technical contents not mentioned in the above methods can be realized by adopting or referring to existing technologies.

Claims (3)

1. a T-shaped steel upper flange embedded square concrete-filled steel column and steel beam connection node, comprising square steel-filled concrete column, steel beam (3), T-shaped steel (4) and high-strength bolts (2); it is characterized in that: The square steel pipe concrete column is composed of a square steel pipe (1) and concrete (5) poured into it, two T-shaped steel pipes (4) are respectively located on both sides of the square steel pipe (1), and the wall plate of the square steel pipe (1) is located on the There is a horizontal groove at the position of the upper flange of the T-shaped steel, the size of which is the same as the width of the upper flange of the T-shaped steel, as a channel for the upper flange of the T-shaped steel (4) to be embedded in the wall plate of the square steel pipe (1); located in the square steel pipe (1) The upper flanges of the corresponding T-shaped steel (4) on both sides are on the same horizontal plane, the web of the T-shaped steel is directly welded to the wall plate of the square steel pipe, and the T-shaped steel web on both sides of the square steel pipe and the square steel pipe pass through High-strength bolts are connected through reinforcement; one end of the steel beam (3) is inserted between the upper and lower flanges of the T-shaped steel (4), and the upper and lower flanges of the T-shaped steel and the steel beam (3) pass through High-strength bolt connection, while the bolt head adopts double nuts. 2. A connection node between a T-shaped steel upper flange embedded square steel pipe concrete column and a steel beam according to claim 1, wherein the steel beam is a hot-rolled H-shaped steel beam or a welded H-shaped steel beam. steel beams. 3. A kind of T-shaped steel upper flange embedded square concrete filled steel tube column and steel beam connecting node according to claim 1, it is characterized in that described concrete (5) is ordinary concrete, high-strength concrete or self-compacting concrete any kind.