Energy dissipation and shock absorption connecting joint for assembly type steel structure

Abstract

The utility model discloses an energy dissipation and shock absorption connecting node for an assembly type steel structure. The energy dissipation and shock absorption connecting node comprises a connecting key and a damper which are arranged between a steel column and a steel beam; the connecting key is of a box-shaped hollow structure, one end of the connecting key is fixedly connected with the steel column, and the steel beam extends into the connecting key from the other end of the connecting key and is connected with the connecting key through a connecting structure; the damper is arranged in the connecting key, a lug plate A at one end of the damper is connected with a lug plate B on the steel beam through a pin shaft, and a connecting chain rod at the other end of the damper is connected with the steel column through a rigid gasket with threads. And a stiff spring is sleeved on the connecting chain rod. In the earthquake reciprocating action process, large deformation can be generated for energy dissipation, good energy dissipation and shock absorption effects are achieved, and automatic reset is achieved through the arrangement of the stiff springs.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and in particular relates to an energy dissipation and shock absorption connection node for assembled steel structures. Background Art

[0002] Prefabricated steel structures in high-rise buildings mostly adopt frame structures, with H-shaped steel beams and rectangular steel tube concrete columns. Reliable connection between steel beams and steel columns is an important measure to ensure building safety. Earthquake disasters, as a common natural disaster, frequently affect people's lives and property safety. The connection nodes between steel beams and steel columns are significantly affected by earthquakes. At present, component node connections are mainly divided into two methods for earthquake action: "resistance" and "dissipation": (1) using the concept of "strong node and weak rod" to resist earthquake action; (2) using energy-dissipating elements to dissipate earthquakes. Method (1) requires strong connection stiffness and small node deformation. In addition, when encountering rare earthquake action, once the node produces plastic hinges, it is difficult to reset and repair; while the design method (2) requires large node deformation for effective energy dissipation. Summary of the invention

[0003] In view of the above contradiction, the purpose of the utility model is to provide an energy dissipation and shock absorbing connection node for assembled steel structures, which can not only meet the concept of "strong columns and weak beams", but also can dissipate energy well during earthquakes and can achieve automatic reset.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an energy dissipation and shock absorption connection node for assembled steel structures, comprising a connection key and a damper arranged between a steel column and a steel beam;

[0005] The connecting key is a box-shaped hollow structure, one end of which is fixedly connected to the steel column, and the steel beam extends into the connecting key from the other end of the connecting key and is connected to the connecting key through the connecting structure;

[0006] The damper is arranged in the connecting key, and the ear plate A at one end thereof is connected to the ear plate B on the steel beam through a pin shaft, and the connecting chain rod at the other end is connected to the steel column through a threaded rigid gasket; a stiffening spring is sleeved on the connecting chain rod.

[0007] Furthermore, the connection structure includes a first connection component and a second connection component; wherein,

[0008] The No. 1 connection assembly includes a plurality of stiffening plates fixed on the steel beam, a steel plate connected to the ends of the plurality of stiffening plates, a brass sheet A arranged on the steel plate, a pressing sheet A and an adjusting bolt, wherein the pressing sheet A is arranged in the connection key through the adjusting bolt, and the pressing sheet A is in contact with and connected to the brass sheet A; the adjusting bolt is connected to the pressing sheet A and is threadedly connected to the connection key;

[0009] The No. 2 connecting assembly includes a pressing plate B and an adjusting bolt. The pressing plate B is arranged between the connecting key and the steel beam through a plurality of adjusting bolts, and the pressing plate B is in contact and connected with a brass plate B arranged on the steel beam; the adjusting bolt is connected to the pressing plate B and is threadedly connected to the connecting key.

[0010] Furthermore, the cross-section of the steel beam is H-shaped, consisting of an upper flange, a lower flange and a web, and a side plate is welded on each side of the web.

[0011] Furthermore, the damper is provided with two, and the matching ear plates B, rigid gaskets and stiff springs are also two; the two ear plates B are correspondingly fixed on the side plates on both sides of the web.

[0012] Furthermore, the No. 1 connecting component is provided with multiple groups, which are respectively arranged between the side wall of the connecting key and the steel beam; the No. 2 connecting component is provided with multiple groups, which are respectively arranged at the top and bottom of the connecting key.

[0013] Furthermore, the rigid gasket is welded to the steel column, and a stiffening plate is welded to both sides of the rigid gasket.

[0014] The utility model has a simple structure and a novel design. It can generate a large deformation to dissipate energy during the reciprocating action of an earthquake, has a good energy dissipation and shock absorption effect, and realizes automatic reset by arranging a stiff spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the utility model;

[0016] Figure 2 It is the connection diagram of the internal structure of the connection key;

[0017] Figure 3 It is the connection relationship diagram between the rigid gasket and the steel column;

[0018] Figure 4 is a schematic diagram of the damper;

[0019] Figure 5 It is a connection relationship diagram between connection keys and connection structures. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are now described with reference to the accompanying drawings. It will be understood by those skilled in the art that the following embodiments are only used to illustrate the present invention and should not be considered as limiting the scope of the present invention. If no specific technology, connection relationship or condition is indicated in the embodiments, the technology, connection relationship, condition described in the literature in the field or the product specification is used. If the manufacturer of the materials, instruments or equipment used is not indicated, they are all conventional products that can be purchased.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0022] Combination Figure 1-Figure 5 As shown, the energy dissipation and shock absorption connection node for assembled steel structure provided by the utility model comprises a connection key 3 and a damper 4 arranged between a steel column 2 and a steel beam 1;

[0023] The cross section of the steel beam 1 is H-shaped, and is composed of an upper flange 12, a lower flange 13 and a web 14, and a side plate 15 is welded on both sides of the web 14; arc-shaped notches are symmetrically provided on both sides of the upper flange 12 and the lower flange 13 away from the connecting key 3, so that the upper flange 12 and the lower flange 13 are T-shaped;

[0024] The connecting key 3 is a box-shaped hollow structure, one end of which is fixedly connected to the steel column 2. The steel beam 1 extends into the connecting key 3 from the other end of the connecting key 3 and is connected to the connecting key 3 through the connecting structure 5 so that the two are kept in close contact; the steel column 2 is a box-shaped section, which is welded by four wall panels. The middle cavity can be poured with concrete. Since there is no transverse partition in the steel column, it is convenient to pour concrete; the width of the connecting key 3 is the same as that of the steel column 2; the connecting key is made of thicker steel plates, which provides reliable connection stiffness, strength and deformation length;

[0025] The damper 4 is arranged in the connecting key 3, and the ear plate A41 at one end thereof is connected to the ear plate B11 on the steel beam 1 through the pin shaft 7, and the connecting chain rod 42 at the other end is connected to the steel column 2 through the threaded rigid gasket 21; the rigid gasket 21 is welded to the steel column 2, and a stiffening plate 22 is welded on both sides of the rigid gasket 21; a stiffening spring 6 is sleeved on the connecting chain rod 42; the stiffening spring maintains the relative position and self-reset function of the steel beam and the steel column through its own elastic stiffness, and its stiffness coefficient is determined by calculation, and the damper dissipates energy during the reciprocating horizontal displacement of the steel beam; the damper 4 is an existing structure, and is composed of the ear plate A41, the connecting chain rod 42, the cylinder 43 and the movable piston 44.

[0026] Specifically, the connection structure 5 includes a first connection component and a second connection component, and the connection structure 5 is used to limit the vertical and lateral rotation of the steel beam; wherein,

[0027] The first connection assembly includes a plurality of stiffening plates 51 fixed on the steel beam 1, a steel plate 52 connected to the ends of the plurality of stiffening plates 51, a brass sheet A53 arranged on the steel plate 52, a pressing sheet A54 and an adjusting bolt 55, wherein the pressing sheet A54 is arranged in the connection key 3 through the adjusting bolt 55, and the pressing sheet A54 is in contact with and connected to the brass sheet A53; the adjusting bolt 55 is connected to the pressing sheet A54 and is threadedly connected to the connection key 3;

[0028] The second connecting assembly includes a pressing plate B57 and an adjusting bolt 55. The pressing plate B57 is arranged between the connecting key 3 and the steel beam 1 through a plurality of adjusting bolts 55, and the pressing plate B57 is in contact and connected with a brass plate B56 arranged on the steel beam 1 (top and bottom); the adjusting bolt 55 is connected to the pressing plate B57 and is threadedly connected to the connecting key 3.

[0029] According to a further optimization scheme, multiple groups of No. 1 connecting components are respectively arranged between the side walls of the connecting key 3 and the steel beam 1; multiple groups of No. 2 connecting components are respectively arranged at the top and bottom of the connecting key 3; specifically: four groups of No. 1 connecting components are respectively arranged at the upper and lower parts of each side wall of the connecting key 3, and they are symmetrically arranged; six groups of No. 2 connecting components are respectively arranged at the top and bottom parts of the connecting key 3, and they are symmetrically arranged.

[0030] According to a further optimized solution, two dampers 4 are provided, and the matching ear plates B11, rigid gasket 21 and stiffening spring 6 are also two; the two ear plates B11 are correspondingly fixed on the side plates 15 on both sides of the web 14; and the two dampers 4 are arranged in parallel in the connecting key 3.

[0031] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Energy dissipation and shock absorption connection node for assembled steel structure, characterized in that: It comprises a connecting key (3) and a damper (4) arranged between a steel column (2) and a steel beam (1); The connecting key (3) is a box-shaped hollow structure, one end of which is fixedly connected to the steel column (2), and the steel beam (1) extends into the connecting key (3) from the other end of the connecting key (3) and is connected to the connecting key (3) through a connecting structure (5); The damper (4) is arranged in the connecting key (3), and the ear plate A (41) at one end thereof is connected to the ear plate B (11) on the steel beam (1) through a pin shaft (7), and the connecting chain rod (42) at the other end is connected to the steel column (2) through a threaded rigid gasket (21); and a rigid spring (6) is sleeved on the connecting chain rod (42).

2. The energy dissipation and shock absorption connection node for assembled steel structure according to claim 1, characterized in that: The connection structure (5) includes a first connection component and a second connection component; wherein, The first connection assembly comprises a plurality of stiffening plates (51) fixed on the steel beam (1), a steel plate (52) connected to the ends of the plurality of stiffening plates (51), a brass sheet A (53) arranged on the steel plate (52), a pressing sheet A (54) and an adjusting bolt (55); the pressing sheet A (54) is arranged in the connection key (3) through the adjusting bolt (55), and the pressing sheet A (54) is in contact with and connected to the brass sheet A (53); the adjusting bolt (55) is connected to the pressing sheet A (54) and is threadedly connected to the connection key (3); The second connection assembly comprises a pressing plate B (57) and an adjusting bolt (55); the pressing plate B (57) is arranged between the connection key (3) and the steel beam (1) via a plurality of adjusting bolts (55); and the pressing plate B (57) is contact-connected with a brass plate B (56) arranged on the steel beam (1); the adjusting bolt (55) is connected to the pressing plate B (57) and is threadedly connected to the connection key (3).

3. The energy dissipation and shock absorption connection node for assembled steel structure according to claim 1 or 2, characterized in that: The cross section of the steel beam (1) is H-shaped and consists of an upper flange (12), a lower flange (13) and a web (14), with a side plate (15) welded to each side of the web (14).

4. The energy dissipation and shock absorption connection node for assembled steel structure according to claim 3, characterized in that: The damper (4) is provided with two, and the matching ear plates B (11), rigid gasket (21) and stiff spring (6) are also two; the two ear plates B (11) are correspondingly fixed on the side plates (15) on both sides of the web (14).

5. The energy dissipation and shock absorption connection node for assembled steel structure according to claim 2, characterized in that: The first connection assembly is provided with a plurality of groups, which are respectively arranged between the side wall of the connection key (3) and the steel beam (1); the second connection assembly is provided with a plurality of groups, which are respectively arranged at the top and the bottom of the connection key (3).

6. The energy dissipation and shock absorption connection node for assembled steel structure according to claim 1, characterized in that: The rigid gasket (21) is welded to the steel column (2), and a stiffening plate (22) is welded to each side of the rigid gasket (21).

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