CN111677108B - Self-resetting beam column energy consumption node - Google Patents
Self-resetting beam column energy consumption node Download PDFInfo
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- CN111677108B CN111677108B CN202010365343.3A CN202010365343A CN111677108B CN 111677108 B CN111677108 B CN 111677108B CN 202010365343 A CN202010365343 A CN 202010365343A CN 111677108 B CN111677108 B CN 111677108B
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/024—Structures with steel columns and beams
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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
- E04B2001/2415—Brackets, gussets, joining plates
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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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- 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
- E04B2001/2442—Connections with built-in weakness points
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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
- E04B2001/2448—Connections between open section profiles
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- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
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- Business, Economics & Management (AREA)
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a self-resetting beam-column energy consumption node which comprises a vertically arranged steel column and a horizontally arranged steel beam; the device also comprises a flush type end plate, a square supporting member, a bracket, a high-strength pull rod, a disc-shaped spring and a C-shaped damping energy-consumption steel plate; the invention forms the prepressing bending moment through the precompression of the disc spring, ensures that the node structure has good self-resetting performance, reduces the rotating radius and rigidity requirements of the steel beam through the square supporting member, and dissipates a large amount of energy input into the structure by earthquake by combining the C-shaped damping energy-consuming steel plate, effectively avoids the formation of a plastic hinge similar to the traditional steel frame beam-column node, realizes that the beam-column node is not damaged or slightly damaged under the action of large earthquake, and the node can be put into use without repair or slight repair after the earthquake.
Description
Technical Field
The invention relates to an energy dissipation and shock absorption technology in the field of steel structure buildings, in particular to a self-resetting beam-column energy dissipation node.
Background
At present, the seismic structure with the recoverable function becomes a research hotspot in the field of seismic engineering in recent years. Although the parameters and methods of the earthquake-resistant design specifications of various countries are different, for rare earthquakes, the field of construction of the countries is mainly to avoid the collapse of buildings under high-intensity earthquakes by increasing the ductility design of the structures so as to avoid the casualties. The collapse-resistant design concept is reasonable and feasible at the present stage, but the design can cause functional damage and residual deformation of the building structure, and the building structure is difficult to repair after an earthquake or the repair time is too long, so that the building function is interrupted. The anti-seismic design of important buildings and lifeline engineering is changed from anti-collapse design to repairable design, and meanwhile, the anti-seismic design is easy to construct and maintain and has high life and cost benefits. Therefore, researchers have proposed the concept of recoverable functional structures, focusing on "zero destruction" or "functional recoverability" after an earthquake.
The recoverable functional structure system is mainly applied to three types, namely a replaceable structural component, a swing structure and a self-resetting structure. The function of the structure is rapidly recovered after the replaceable structural component is shaken; the damage to the structure is reduced by the swinging wall or the swinging frame; the self-resetting structure automatically restores to the normal state of the structure, so that the residual deformation of the structure after earthquake is reduced, and people can quickly restore the normal use of the building and the structure without extra repair or slight repair after experiencing high-strength earthquake.
Therefore, the technical personnel in the field need to solve the problem that a structure which has strong self-resetting performance and energy consumption capability under the action of strong earthquake and can quickly recover the use function without repair or slight repair after the earthquake is developed.
Disclosure of Invention
In view of this, the present invention provides a self-resetting beam-column energy-consuming node, which aims to solve the above technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a self-resetting beam-column energy consumption node comprises a vertically arranged steel column and a horizontally arranged steel beam; further comprising: the device comprises a flat end plate, a square supporting member, a bracket, a high-strength pull rod, a disc-shaped spring and a C-shaped damping energy-consumption steel plate;
the parallel-level end plate is fixed at the end of the steel beam and faces the outer side of the flange of the steel column;
the square supporting member is of a U-shaped opening structure or a closed box structure, one end of the square supporting member is fixed with the flush type end plate, and the other end of the square supporting member is attached to the outer wall of the flange of the steel column;
the bracket is fixed on the outer wall of the flange of the steel column facing the steel beam, and the top end of the bracket is attached to the bottom end of the square supporting member;
the high-strength pull rods are multiple and horizontally penetrate through the steel column flanges and the flush type end plates, and are fastened at the end heads of the two ends of the steel column flanges through high-strength nuts;
the disc-shaped spring is sleeved at the two end heads or the single-side end head of the high-strength pull rod and is tightly propped and fixed by the high-strength nut;
and two ends of the C-shaped damping and energy-dissipating steel plate are respectively and fixedly connected with the flange of the steel column and the bottom flange of the steel beam.
According to the technical scheme, the prepressing bending moment is formed through the prestress of the disc spring, the node structure is guaranteed to have good self-resetting performance, the requirements for the rotating radius and the rigidity of a steel beam are reduced through the square supporting component, a large amount of energy input into the structure in an earthquake is dissipated by combining the C-shaped damping energy dissipation steel plate, the formation of a plastic hinge similar to a traditional steel frame beam-column node is effectively avoided, the beam-column node is not damaged or slightly damaged under the action of a large earthquake, and the node can be put into use without repair or slight repair after the earthquake.
It should be noted that the steel columns and the steel beams adopted in the present invention are all i-beams, and the conventional i-beams are both composed of a web and flanges at two ends, so that the web and the flanges are both terms of art and are not described herein again.
Preferably, in the self-resetting beam-column energy dissipation node, the disc spring is a composite combined disc spring.
Preferably, in the self-resetting beam-column energy dissipation node, cushion rubber pads are arranged between the square supporting member and the steel column flange and between the square supporting member and the steel column flange. The cushion rubber pad can play an effective buffering role in the swing section.
Preferably, in the self-resetting beam-column energy dissipation node, a reinforcing plate is fixed to one side, opposite to the square support member, of the flush end plate; the reinforcing plate extends along the side plate direction of the square supporting member and is fixedly connected with the web plate of the steel beam. The reinforcing plate can effectively prevent the damage or the welding seam connection failure of the flush type end plate, and the connecting structure is more stable.
Preferably, in the self-resetting beam-column energy dissipation node, the number of the high-strength pull rods is 4, 6 or 8, and the high-strength pull rods are symmetrically arranged on two sides of the two reinforcing plates and two sides of the steel beam web plate. The structure stability can be effectively improved by arranging the high-strength pull rods, and the elastic vibration state of the node structure is more stable.
Preferably, in the self-resetting beam-column energy dissipation node, the bracket is made of a plurality of triangular steel plates welded at the tops of the triangular steel plates through horizontal rectangular steel plates. The structure is simple, the stability is strong, and the square supporting member can be effectively supported.
Preferably, in the above self-resetting beam column energy dissipation node, rigid gaskets are padded at two ends of the disc spring. The rigidity backing plate can prevent effectively that the bolt is not hard up, and connection stability is stronger.
Preferably, in the self-resetting beam-column energy dissipation node, two ends of the C-shaped damping and energy dissipation steel plate are respectively fastened and connected with the flange of the steel column and the bottom flange of the steel beam through bolts, or are welded and fixed. The connecting structure is simple, and the connecting stability is strong.
Preferably, in the self-resetting beam-column energy dissipation node, a flange of the steel column connected with the steel beam is provided with a long hole through which the high-strength pull rod passes in the vertical direction. Can effectively prevent that high-strength pull rod from surging or bucking in the rotation process, improve the antidetonation buffer capacity of node structure.
Preferably, in the self-resetting beam-column energy dissipation node, one end of the square supporting member is connected with the flush type end plate through a welding seam. The connection structure has stronger stability.
Preferably, in the self-resetting beam-column energy dissipation node, a plurality of stiffening ribs are welded and fixed between the flanges and the webs of the steel columns and the steel beams. The structural stability of steel column and girder steel can effectively be improved.
According to the technical scheme, compared with the prior art, the self-resetting beam-column energy consumption node has the following beneficial effects that:
1. the high-strength pull rod, the disc-shaped spring, the rigid base plate and the C-shaped damping energy-dissipation steel plate jointly form a self-resetting device, a pre-pressing bending moment is formed through the pre-pressing force of the disc-shaped spring, and the C-shaped damping energy-dissipation steel plate generates elastic restoring force after being stressed, so that the node structure is guaranteed to have good self-resetting performance.
2. According to the invention, the bending degree, the bending moment and the corner of the steel beam are controlled by compounding and combining the disc spring, the square supporting member and the C-shaped damping energy-consuming steel plate, a large amount of energy input into the structure by an earthquake is dissipated, and the formation of a plastic hinge similar to a traditional steel frame beam-column joint is effectively avoided; the disc spring is arranged in the steel beam, the square supporting member is welded at the end of the steel beam, the rotating radius of the column bottom can be effectively reduced, the rigidity requirement on the steel beam is reduced, the beam column node is not damaged or slightly damaged under the action of a large earthquake, the node can be put into use without being repaired after the earthquake, and the disc spring has good energy consumption performance.
3. The invention adopts common building steel to manufacture the sub-components, has simple structural form, is convenient for construction and installation, uses the disc spring and the C-shaped damping energy-dissipation steel plate with lower cost, greatly reduces the production cost, has great significance, and can be widely popularized and applied to important building structures in high-intensity earthquake areas.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a structural front view of a self-resetting beam-column energy-consuming node provided by the invention;
FIG. 2 is a structural left side view of a self-resetting beam-column energy-dissipating node according to the present invention;
fig. 3 is a structural plan view of a self-resetting beam-column energy consumption node provided by the invention.
Wherein:
1-steel column;
2-a steel beam;
3-a reinforcing plate;
4-a square support member;
5-flush type end plate;
6-bracket;
7-C type damping energy-consuming steel plates;
8-high-strength pull rod;
9-belleville springs;
10-a rigid gasket;
11-a bolt;
12-cushion rubber pad;
13-long hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the accompanying drawings 1 to 3, the embodiment of the invention discloses a self-resetting beam-column energy consumption node, which comprises a vertically arranged steel column 1 and a horizontally arranged steel beam 2; further comprising: the device comprises a flush type end plate 5, a square supporting member 4, a bracket 6, a high-strength pull rod 8, a disc-shaped spring 9 and a C-shaped damping energy-consumption steel plate 7;
the parallel-level end plate 5 is fixed at the end of the steel beam 2 and faces the outer side of the flange of the steel column 1;
the square supporting member 4 is of a U-shaped opening structure or a closed box structure, one end of the square supporting member is fixed with the flush type end plate 5, and the other end of the square supporting member is attached to the outer wall of the flange of the steel column 1;
the bracket 6 is fixed on the outer wall of the flange of the steel column 1 facing the steel beam 2, and the top end of the bracket is attached to the bottom end of the square supporting member 4;
the high-strength pull rods 8 are multiple in number, horizontally penetrate through the flange of the steel column 1 and the flush type end plate 5, and are fastened at the end heads of the two ends of the steel column through high-strength nuts;
the disc-shaped spring 9 is sleeved at the end heads of two ends or one side end head of the high-strength pull rod 8 and is tightly propped and fixed by a high-strength nut;
and two ends of the C-shaped damping energy-dissipation steel plate 7 are fixedly connected with the flange of the steel column 1 and the bottom flange of the steel beam 2 respectively.
In order to further optimize the technical scheme, buffer rubber pads 12 are padded between the square supporting members 4 and the flanges and the brackets 6 of the steel column 1.
In order to further optimize the technical scheme, a reinforcing plate 3 is fixed on one surface of the flush type end plate 5, which is back to the square supporting member 4; the reinforcing plate 3 extends along the side plate direction of the square supporting member 4 and is fixedly connected with the web of the steel beam 2.
In order to further optimize the technical scheme, the number of the high-strength pull rods 8 is 4, 6 or 8, and the high-strength pull rods are symmetrically arranged on two sides of the reinforcing plate 3 and two sides of the web plate of the steel beam 2.
In order to further optimize the technical scheme, the bracket 6 is made of a plurality of triangular steel plates and horizontal rectangular steel plates welded to the tops of the triangular steel plates.
In order to further optimize the technical scheme, rigid gaskets 10 are padded at two ends of the disc spring 9.
In order to further optimize the technical scheme, two ends of the C-shaped damping and energy-dissipating steel plate 7 are respectively fastened and connected with the flange of the steel column 1 and the bottom flange of the steel beam 2 through bolts 11, or are welded and fixed.
In order to further optimize the technical scheme, the flange of the steel column 1 connected with the steel beam 2 is provided with a long hole 13 which is used for the high-strength pull rod 8 to pass through in the vertical direction.
In order to further optimize the above solution, one end of the square support member 4 is connected with the flush end plate 5 by a weld.
In order to further optimize the technical scheme, a plurality of stiffening ribs are welded and fixed between the flanges and the web plates of the steel columns 1 and the steel beams 2.
The working principle of the embodiment is as follows:
the node structure provided by the invention is arranged in a common steel frame structure, controllable constrained rotation of beam-column nodes is formed through prepressing bending moment generated by the prepressing of the disc-shaped spring 9 during strong earthquake, energy input into the structure during earthquake is dissipated by utilizing the square supporting member 4, the C-shaped damping energy-consuming steel plate 7 and the disc-shaped spring 9, the formation of plastic hinges similar to the traditional steel frame beam-column nodes is effectively avoided, the rotating radius of the steel beam 2 is reduced, the rigidity requirement on the steel beam 2 is reduced, the beam-column nodes are not damaged or slightly damaged under the action of large earthquake, and the nodes can be put into use without repairing after earthquake.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A self-resetting beam-column energy consumption node comprises a steel column (1) which is vertically arranged and a steel beam (2) which is horizontally arranged; it is characterized by also comprising: the device comprises a flush type end plate (5), a square supporting member (4), a bracket (6), a high-strength pull rod (8), a disc-shaped spring (9) and a C-shaped damping energy-consuming steel plate (7);
the parallel end plate (5) is fixed at the end of the steel beam (2) and faces the outer side of the flange of the steel column (1);
the square supporting member (4) is of a U-shaped opening structure or a closed box structure, one end of the square supporting member is fixed with the flush type end plate (5), and the other end of the square supporting member is attached to the outer wall of the flange of the steel column (1);
the bracket (6) is fixed on the outer wall of the flange of the steel column (1) facing the steel beam (2), and the top end of the bracket is attached to the bottom end of the square support member (4); cushion rubber pads (12) are padded between the square supporting members (4) and the flanges and the brackets (6) of the steel column (1);
the high-strength pull rods (8) are multiple in number, horizontally penetrate through the flanges of the steel columns (1) and the flush type end plates (5), and are fastened at the ends of the two ends of the steel columns through high-strength nuts;
the disc-shaped spring (9) is sleeved at the end heads at two ends or one end head at one side of the high-strength pull rod (8) and is tightly propped and fixed by the high-strength nut;
and two ends of the C-shaped damping and energy-dissipating steel plate (7) are respectively and fixedly connected with the flange of the steel column (1) and the bottom flange of the steel beam (2).
2. A self-resetting beam-column energy consumption node according to claim 1, characterized in that a reinforcing plate (3) is fixed on the side of the flush end plate (5) opposite to the square supporting member (4); the reinforcing plate (3) extends along the side plate direction of the square supporting member (4) and is fixedly connected with the web plate of the steel beam (2).
3. The self-resetting beam-column energy consumption node as claimed in claim 2, wherein the number of the high-strength pull rods (8) is 4, 6 or 8, and the high-strength pull rods are symmetrically arranged on two sides of the reinforcing plate (3) and two sides of the web plate of the steel beam (2).
4. A self-resetting beam-column energy dissipation node according to claim 3, wherein the bracket (6) is made of a plurality of triangular steel plates welded on top of horizontal rectangular steel plates.
5. A self-resetting beam-column energy dissipation node according to any one of claims 1-4, characterized in that both ends of the disc spring (9) are padded with rigid shims (10).
6. The self-resetting beam-column energy dissipation node as recited in claim 1, wherein two ends of the C-shaped shock-absorbing energy dissipation steel plate (7) are respectively fastened and connected with the flange of the steel column (1) and the bottom flange of the steel beam (2) through bolts (11) or fixed by welding.
7. The self-resetting beam-column energy consumption node as claimed in claim 1, wherein a flange of the steel column (1) connected with the steel beam (2) is provided with a long hole (13) for the high-strength pull rod (8) to pass through in a vertical direction.
8. A self-resetting beam-column energy dissipating node according to claim 1, wherein one end of the square bracing member (4) is connected to the flush end plate (5) by a weld.
9. The self-resetting beam-column energy consumption node as claimed in claim 1, wherein a plurality of stiffening ribs are welded and fixed between flanges and webs of the steel columns (1) and the steel beams (2).
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| CN202010365343.3A CN111677108B (en) | 2020-04-30 | 2020-04-30 | Self-resetting beam column energy consumption node |
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| CN202010365343.3A CN111677108B (en) | 2020-04-30 | 2020-04-30 | Self-resetting beam column energy consumption node |
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| CN111677107B (en) * | 2020-05-26 | 2021-12-17 | 淮阴工学院 | Assembled connected node |
| CN112726816B (en) * | 2020-12-25 | 2022-04-26 | 海南大学 | Prefabricated assembled sways from restoring to throne concrete frame structure |
| CN113090059A (en) * | 2021-04-01 | 2021-07-09 | 湖州新火建筑工程有限公司 | Novel reinforcement that building engineering frame roof beam structural strength is high device |
| CN114991551B (en) * | 2022-05-25 | 2023-06-06 | 陕西建工第九建设集团有限公司 | Assembled multistage energy consumption self-resetting beam column node |
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