CN107143043B - Flexible connection node - Google Patents
Flexible connection node Download PDFInfo
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- CN107143043B CN107143043B CN201710570476.2A CN201710570476A CN107143043B CN 107143043 B CN107143043 B CN 107143043B CN 201710570476 A CN201710570476 A CN 201710570476A CN 107143043 B CN107143043 B CN 107143043B
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- steel
- node
- angle
- column
- refractory
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2418—Details of bolting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a flexible connection node, and belongs to the field of structural engineering steel structures. In the invention, the steel columns and the steel beams are connected through the fin plates and the angle steel, the fin plates are welded with the steel columns, and the angle steel is connected with the steel beams and the bolts between the steel columns for the second time; wherein the angle steel is made of refractory steel or high-strength alloy steel, and the bolt is made of refractory steel or ultrahigh-strength alloy steel. The node overcomes the defect that the welding seam connection area of the traditional node is easy to damage under the action of fire and earthquake, and the integrity and the completeness of a steel structure system are ensured by adopting two different steels and two damage mechanism modes to complement each other; the steel beam and the steel column are secondarily connected through the angle steel, so that the shockproof capacity of the node is greatly improved, and the node can be used for steel structure fire-resistant systems and high-rise steel structure buildings in high-intensity earthquake areas.
Description
Technical Field
The invention belongs to the field of structural engineering steel structures, and particularly relates to a flexible connection node.
Background
Steel structures have been used more and more widely in recent decades. The steel structure node is used as a tie for connecting steel structure members to form a structure, plays an extremely important role for structural safety, and therefore, ensuring the safety of the node is a key for the overall safety of the steel structure. The existing steel structure nodes are divided into rigid nodes, semi-rigid nodes and flexible nodes, wherein the flexible nodes are applied to a precast concrete structure due to the fact that stress received by the flexible nodes can be released, the rigidity of the nodes determines the deformation resistance of the structure, the flexibility characteristics of the nodes can have important influence on the anti-seismic performance of the structure, the existing flexible nodes are insufficient in strength and rigidity, safety reserve consideration of node areas under the effects of earthquakes and fires is insufficient, hidden danger that the nodes bend, break and destroy to cause building damage and collapse under the effects of large earthquakes is caused, and the anti-seismic structure is inconsistent with the anti-seismic design principle of 'large earthquake non-collapse', and the secondary protection capability is not achieved. How to improve the energy consumption capability of the steel structure node under the action of earthquake and fire and the node safety reserve is a problem to be solved in the steel structure design and construction.
Disclosure of Invention
In view of the above, the present invention is directed to a flexible connection node to improve the safety and energy consumption of the steel structure connection.
In order to achieve the above purpose, the present invention provides the following technical solutions: the flexible connection node comprises a steel beam, a steel column and a fin plate, and further comprises angle steel, wherein the steel beam is an H-shaped steel beam, the steel column is an I-shaped steel column, the fin plate is vertically welded on one side flange of the steel column, one side of the angle steel is arranged on the steel column flange welded with one side of the fin plate and is connected with the steel column flange through a bolt, and the other side of the angle steel is arranged on a steel beam web and is connected with the steel beam web and the fin plate through a bolt; the angle steel is made of refractory steel or high-strength alloy steel, and the bolt is made of refractory steel or ultrahigh-strength alloy steel.
Further, the fin plate and the angle steel are correspondingly arranged on two sides of the steel beam web plate.
Further, the I-shaped steel column is formed by welding steel plates.
Further, the I-shaped steel column is rolled steel.
Further, the H-shaped steel beam is formed by welding steel plates.
Further, the H-shaped steel beam is rolled steel.
The invention has the beneficial effects that:
(1) The safety and the integrity of the structural system can be effectively ensured, and the fire resistance and the energy consumption of the steel connecting area are increased.
(2) The joint is additionally semi-rigidly connected on the basis of flexible connection, and simultaneously has two failure mechanisms, so that welding between the fin plate and the steel column is allowed to be broken under extreme load working conditions, and better deformability and fire resistance limit are provided by angle steel connection.
(3) The angle steel and the bolts are made of special materials, so that the shearing resistance of the joint is improved and the shock resistance is better on the premise of ensuring the flexibility of the joint.
(4) By adopting the assembled steel structure for connection, the components are prefabricated in a factory, the manufacturing quality is high, the on-site rapid assembly can be realized, and the construction period is saved.
In general, the node overcomes the defect that the welding seam connection area of the traditional node is easy to damage under the action of fire and earthquake, and the integrity of a steel structure system are ensured by adopting two different steels and two damage mechanism modes to complement each other, so that the node can be used in a fire-resistant and high-intensity earthquake area steel structure system; the steel beam and the steel column are secondarily connected through the angle steel, so that the shockproof capacity of the node is greatly improved, the node can be used for steel structure fire-resistant systems and high-rise steel structure buildings in high-intensity earthquake areas, and has a relatively wide application prospect.
Drawings
In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for description:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the A-direction of FIG. 1;
FIG. 3 is a schematic view of the B-direction of FIG. 1;
fig. 4 is a schematic structural view of a finned steel column.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in the figure, the flexible connection node comprises a steel beam 1, a steel column 2 and a fin plate 3, and further comprises angle steel 4, wherein the steel beam 1 is an H-shaped steel beam, the steel column 2 is an I-shaped steel column, the fin plate 3 is vertically welded on one side flange of the steel column 2, one side of the angle steel 4 is arranged on the steel column flange welded with the fin plate 3 and is connected with the steel column flange through a bolt 5, and the other side of the angle steel 4 is arranged on a steel beam web and is connected with the steel beam web and the fin plate 3 through the bolt 5; the angle steel 4 is made of refractory steel or high-strength alloy steel, and the bolt is made of refractory steel or ultrahigh-strength alloy steel.
In the invention, the steel column 2 and the steel beam 1 are connected through the fin plate 3 and the angle steel 4, the fin plate 3 is welded with the steel column 2, and the angle steel is connected with the steel beam 1 and the steel column 2 through bolts for the second time. On the one hand, the connection mode of I-shaped steel column and H shaped steel roof beam has adopted two kinds of different steel materials, namely girder steel 1, steel column 2 and fin 3 adopt ordinary steel, and the angle steel then is made by refractory steel or high strength alloy steel, and the bolt is made by refractory steel or super high strength alloy steel, and this combination form has improved the shear capacity of connecting piece such as angle steel and bolt under the prerequisite of guaranteeing node flexibility, makes its shock resistance better. On the other hand, the connection mode of I-shaped steel column and H shaped steel roof beam has adopted the combination steel to connect the type, has increased semi-rigid connection (angle steel 4 is connected with steel column 2 and girder steel 1 respectively) on the basis of flexonics (steel column 2 and fin 3 welding, fin 3 and girder steel 1 are connected), makes the node structure possess two kinds of destruction mechanisms simultaneously.
The connecting mode overcomes the phenomenon that the welding part between the steel column 2 and the fin plate 3 is cracked due to the influence of the residual stress of the welding seam and the heat affected zone of the traditional node under the high temperature; the angle steel 4 is made of refractory steel or high-strength alloy steel, and the bolt 5 is made of refractory steel or ultrahigh-strength alloy steel, so that under the action of fire and earthquake, even if the welding between the steel column 2 and the fin plate 3 is damaged, the angle steel continuously plays a role in connection, namely, the stress mechanism is converted to form secondary protection capability, the catenary effect formed by the angle steel can ensure that the structure cannot collapse continuously, and the connecting node still continuously works in a hinged mode after the welding line area is damaged. Meanwhile, when the steel structure connecting node is used in an earthquake-resistant area, the excellent ductility, deformability and secondary protection mechanism of the high-strength alloy steel angle steel are utilized, and surplus energy can be dissipated under the action of earthquake load or reciprocating load, so that the safety and the integrity of the structure are ensured.
The I-shaped steel column and the H-shaped steel beam can be formed by welding steel plates, and rolled steel can also be adopted. Can be directly installed on site, and has high construction speed and high component manufacturing quality.
In this embodiment, the fin 3 and the angle steel 4 are correspondingly disposed on two sides of the steel beam web. The stress distribution can be more uniform, and the stability and the connection reliability of the structure are further ensured.
In general, the node overcomes the defect that the welding seam connection area of the traditional node is easy to damage under the action of fire and earthquake, and the integrity of a steel structure system are ensured by adopting two different steels and two damage mechanism modes to complement each other, so that the node can be used in a fire-resistant and high-intensity earthquake area steel structure system; the steel beam and the steel column are secondarily connected through the angle steel, so that the shockproof capacity of the node is greatly improved. The field assembly type construction method is adopted, and the construction period is saved.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a flexible connection node, includes girder steel, steel column and fin, its characterized in that: the steel beam is an H-shaped steel beam, the steel column is an I-shaped steel column, the fin plate is vertically welded on one side flange of the steel column, one side of the steel angle is arranged on the steel column flange welded with the fin plate and connected with the steel column flange through a bolt, and the other side of the steel angle is arranged on the steel beam web and connected with the steel beam web and the fin plate through a bolt; the angle steel is made of refractory steel or high-strength alloy steel, and the bolt is made of refractory steel or ultrahigh-strength alloy steel.
2. The overhanging end plate node of claim 1, wherein: the fin plate and the angle steel are correspondingly arranged on two sides of the steel beam web plate.
3. The overhanging end plate node of claim 1, wherein: the I-shaped steel column is formed by welding steel plates.
4. The overhanging end plate node of claim 1, wherein: the I-shaped steel column is rolled steel.
5. The overhanging end plate node of claim 1, wherein: the H-shaped steel beam is formed by welding steel plates.
6. The overhanging end plate node of claim 1, wherein: the H-shaped steel beam is rolled steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710570476.2A CN107143043B (en) | 2017-07-13 | 2017-07-13 | Flexible connection node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710570476.2A CN107143043B (en) | 2017-07-13 | 2017-07-13 | Flexible connection node |
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| Publication Number | Publication Date |
|---|---|
| CN107143043A CN107143043A (en) | 2017-09-08 |
| CN107143043B true CN107143043B (en) | 2023-05-19 |
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| CN201710570476.2A Active CN107143043B (en) | 2017-07-13 | 2017-07-13 | Flexible connection node |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108824224A (en) * | 2018-07-28 | 2018-11-16 | 上海同派建筑科技有限公司 | A kind of steel structural bridge girder connection assembled reinforcing construction |
| CN113202191B (en) * | 2021-05-28 | 2022-06-10 | 中国建筑第二工程局有限公司 | Fabricated building and assembling method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206987069U (en) * | 2017-07-13 | 2018-02-09 | 重庆大学 | One kind flexible connection node |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287008A (en) * | 2011-07-01 | 2011-12-21 | 青岛理工大学 | Asymmetrical haunched aseismatic node for beam flanges of steel structure |
| CN102363979B (en) * | 2011-11-15 | 2014-07-30 | 福州大学 | High-ductility steel structure beam column node in angle steel connection and construction method of high-ductility steel structure beam column node |
| CN204753817U (en) * | 2015-06-24 | 2015-11-11 | 宿迁学院 | Steel structure beam column joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206987069U (en) * | 2017-07-13 | 2018-02-09 | 重庆大学 | One kind flexible connection node |
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| CN107143043A (en) | 2017-09-08 |
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Inventor after: Hu Ying Inventor after: Xu Tanchumin Inventor after: Cui Jia Inventor after: Pang Xiaoping Inventor before: Hu Ying Inventor before: Xu Tanchumin Inventor before: Cui Jia |
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