CN203878778U - Concrete-filled rectangular steel tube column and steel beam steel bar type node with extended end plates - Google Patents

Abstract

The utility model discloses a rectangular steel pipe concrete column and a steel beam piercing bar type joint with an extended end plate, which comprises a rectangular steel pipe concrete column and an I-shaped steel beam; Extended end plates, high-strength bolts and angle steels; the upper and lower wings of the I-steel beams are respectively connected to the extended end plates by welding, and the abdomen is connected to the angle steel by high-strength friction bolts; the extended end plates It is connected with the rectangular concrete-filled steel pipe column through high-strength bolts of steel-piercing type; a rubber backing plate is also arranged between the outstretched end plate and the rectangular steel pipe concrete column. In the utility model, the high-strength threaded bolt can effectively transmit the bending moment and axial force between the beams, and then adjust the rotation capacity of the joint; the introduction of a rubber backing plate between the concrete column and the extended end plate can buffer vibration or steel Thermal expansion and contraction effect between beams. The utility model has the advantages of simple structure, clear force transmission, good anti-seismic effect, long service life and convenient construction.

Description

A Rebar-through Joint of Rectangular Steel Tube Concrete Column and Steel Beam with Overhanging End Plate

technical field

The utility model relates to a concrete column and a steel beam piercing joint, in particular to a rectangular steel pipe concrete column and a steel beam piercing joint with an overhanging end plate, belonging to the field of structural engineering.

Background technique

With the development of the construction industry, the theoretical research on steel-concrete composite structures is becoming more and more perfect, and there are more and more projects applying composite structures at this stage. Currently representative and more advanced technologies mainly include:

Chinese patent application 201320277316.6 discloses a rectangular concrete-filled steel tube column and a box-shaped steel girder piercing joint structure, which is pre-welded on the end face of the box-shaped steel beam to connect steel plates, and the width of the connected steel plate is not greater than that of the rectangular steel tube concrete column. The width of the connecting surface, and the surrounding of the connecting steel plate protrudes beyond the end face of the box-shaped steel girder. There are several holes around the protruding part of the connecting steel plate. The design position of the column.

Chinese patent application 201320276190.0 discloses a semi-rigid joint structure between a rectangular steel tube concrete column and a steel beam, which is provided with T-shaped steel connectors at the upper and lower positions of the I-beam of the rectangular steel tube concrete column, and through the reinforcement-type high-strength Bolts are fixed on the rectangular steel pipe concrete column, the end of the I-steel beam is placed between two T-shaped steel connectors, and the upper and lower flanges of the I-steel beam are connected to the upper and lower two T-shaped steel beams by high-strength frictional bolts. Steel connectors are held together.

Chinese patent application 201320642803.8 discloses a channel-shaped steel-connected rectangular steel pipe concrete column and a steel beam piercing joint, which directly welds the channel steel to the wall of the rectangular steel pipe concrete column by means of fillet welds. Holes are reserved at the corresponding parts of the web; the upper and lower flanges of the steel beam and the upper and lower flanges of the channel steel are connected by high-strength friction bolts or welding; the rectangular steel tube concrete column is connected with the channel steel by high-strength bolts into one.

However, due to the connection between the concrete frame and the steel frame structure of the above-mentioned various nodes is completely rigid connection, the nodes of this structural form are inevitably more or less unable to guarantee that they can withstand strong earthquakes. It has sufficient shock buffering capacity, that is, shock resistance.

Because of the above-mentioned reasons, in the prior art, generally according to the design requirements of the seismic grade, the strength, stiffness and other comprehensive properties of each structural member are enhanced to improve the overall seismic capacity. However, this kind of pre-defense technical means, which mainly enhances the comprehensive performance of the strength and stiffness of each structural part itself, often has relatively large limitations. , in actual operation, there is often a substantial increase in material costs caused by excessive redundancy; Find a suitable balance between reasonable self-weight, strength and rigidity. Moreover, the above node structure cannot avoid local damage in the node structure caused by thermal expansion and contraction due to the large difference in thermal expansion coefficient between concrete and steel under extreme weather conditions, which in turn affects the use of the entire node structure life.

Utility model content

The purpose of this utility model is to provide a rectangular steel tube concrete column with an overhanging end plate and a steel beam piercing reinforcement joint with simple structure, convenient construction, good earthquake resistance and thermal expansion and contraction resistance.

The technical problem that the utility model needs to solve in order to achieve the above purpose is how to endow the node structure with certain flexibility, that is, cushioning performance, while rigidly connecting, so as to improve the anti-seismic ability and thermal expansion and contraction resistance of the node structure.

The technical scheme adopted by the utility model to solve the above technical problems is a rectangular steel pipe concrete column with an overhanging end plate and a steel beam piercing joint, including a rectangular steel pipe concrete column and an I-steel beam; it is characterized in that , including force-transmitting members;

The force-transmitting member includes an overhanging end plate, high-strength bolts and angle steel;

The upper and lower wings of the I-steel beam are respectively connected to the overhanging end plate by welding, and the belly of the I-steel beam is connected to the angle steel by high-strength friction bolts;

The overhanging end plate is connected to the rectangular concrete-filled steel pipe column through the high-strength bolts of the steel-piercing type, and the tail ends of the high-strength bolts of the steel-piercing type are respectively fastened with double nuts;

A rubber backing plate is also arranged between the outstretched end plate and the rectangular steel tube concrete column.

The technical effect directly brought by the above technical solution is that due to the large difference in elastic modulus between the rubber and the steel plate material, the rubber plate and the steel plate are used together. direction deformation, but the deformation of the steel plate is smaller than that of the rubber plate, that is, the rubber plate is constrained by the steel plate, and the central part of the support is approximately in a state of triaxial compression, so the support has a high axial bearing capacity, and the compression deformation is also very small;

When the support is subjected to shear force, the steel plate cannot constrain the shear deformation of the rubber sheet, and the horizontal deformation of the support is approximately the superposition of the horizontal deformation of each rubber sheet, so the horizontal deformation of the support is large.

Therefore, the node structure of the above technical solution has better buffer performance or self-healing ability.

In a preferred manner, the length and width of the above-mentioned rubber backing plate are greater than or equal to the length and width of the contact surface with the extended end plate, and the thickness of the rubber backing plate is 10-25 mm.

The technical effect directly brought by this preferred technical solution is that on the basis of ensuring that the length and width of the rubber backing plate can cover the entire contact surface with the extended end plate, the thickness of the rubber backing plate is preferably 10-25 mm, which can be It meets the requirements of thermal expansion and contraction between the connecting parts in the node, and can ensure that the entire node has good cushioning and shock absorption performance, and will not cause difficulties in hole processing due to excessive thickness of the rubber plate.

More preferably, the aforementioned rubber backing plate is a butyl rubber plate.

The technical effect directly brought by this optimized technical solution is that the buffering and shock absorption performance of the entire node is better, and the expected service life is longer. The main reason is that butyl rubber sheet has good wear resistance, elasticity, shear resistance and tear resistance, and its flexibility is good, and it has comprehensive properties such as heat resistance, acid and alkali resistance.

In summary, the utility model has the following beneficial effects relative to the prior art:

1. Simple structure, clear force transmission, and easy installation and construction;

2. It has good vibration buffer performance and thermal expansion and cold contraction balance performance, so it is safer to use and has a long service life.

Description of drawings

Fig. 1 is the front facade structure schematic diagram of the present utility model;

Fig. 2 is a top view structural diagram of the utility model (wherein, the I-beam steel beam is in a horizontal position).

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail.

As shown in Fig. 1 and Fig. 2, the rectangular concrete-filled steel tube column and the steel beam piercing type joint with the overhanging end plate of the utility model include a rectangular concrete-filled steel tube column 1 and an I-shaped steel beam 2; A force member; the force transmission member includes an overhanging end plate 3, a high-strength bolt 4 and an angle steel 6;

The upper and lower wings of the above-mentioned I-steel beam 2 are respectively connected to the overhanging end plate 3 by welding, and the abdomen of the I-steel beam 2 is connected to the angle steel 6 by high-strength friction bolts 7;

The above-mentioned overhanging end plate 3 is connected with the rectangular concrete-filled steel tube column 1 through the high-strength bolt 4 of the steel-piercing type, and the tail ends of the high-strength bolt 4 of the steel-piercing type are respectively fastened with double nuts;

A rubber backing plate 5 is also provided between the above-mentioned overhanging end plate 3 and the rectangular steel tube concrete column 1 .

In order to ensure effective contact, the length and width of the above-mentioned rubber backing plate 5 are greater than or equal to the length and width of the contact surface with the overhanging end plate 3, and the thickness of the rubber backing plate 5 is preferably 10-25 mm.

Considering factors such as corrosion resistance and service durability, the above-mentioned rubber backing plate 5 is preferably a butyl rubber plate.

It should be noted that the I-beam steel girders 2 shown in Fig. 1 and Fig. 2 are arranged horizontally and transversely. Based on the technical idea of the utility model, in the actual node structure, the I-beam steel girders can also be arranged vertically.

The concrete described in the utility model can be ordinary concrete, high-strength concrete or self-compacting concrete.

Claims (3)

1. A rectangular concrete-filled steel tube column with an overhanging end plate and a steel beam piercing joint, comprising a rectangular concrete-filled steel tube column and an I-shaped steel beam; it is characterized in that it also includes a force-transmitting member; The force-transmitting member includes an overhanging end plate, high-strength bolts and angle steel; The upper and lower wings of the I-steel beam are respectively connected to the overhanging end plate by welding, and the belly of the I-steel beam is connected to the angle steel by high-strength friction bolts; The overhanging end plate is connected to the rectangular concrete-filled steel pipe column through the high-strength bolts of the steel-piercing type, and the tail ends of the high-strength bolts of the steel-piercing type are respectively fastened with double nuts; A rubber backing plate is also arranged between the outstretched end plate and the rectangular steel tube concrete column. 2. The rectangular concrete-filled steel tube column and steel beam piercing joint with overhanging end plates according to claim 1, wherein the length and width of the rubber backing plate are greater than or equal to those of the overhanging ends The length and width of the contact surface of the plate, the thickness of the rubber backing plate is 10-25 mm. 3. The rectangular concrete-filled steel tube column with overhanging end plate and the steel beam pierced joint according to claim 1, characterized in that, the rubber backing plate is a butyl rubber plate.