CN113123658A - Archaized building special-shaped steel node with cooperation of mild steel and friction damper for energy consumption and method - Google Patents
Archaized building special-shaped steel node with cooperation of mild steel and friction damper for energy consumption and method Download PDFInfo
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- CN113123658A CN113123658A CN202110491969.3A CN202110491969A CN113123658A CN 113123658 A CN113123658 A CN 113123658A CN 202110491969 A CN202110491969 A CN 202110491969A CN 113123658 A CN113123658 A CN 113123658A
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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
- 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
- E04H9/024—Structures with steel columns and beams
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Abstract
The invention discloses an antique building special-shaped steel node with soft steel-friction damper cooperative energy consumption and a method, and the antique building special-shaped steel node comprises a beam column node, a bucket component, an arch component and a soft steel-friction damper cooperative working device, wherein the beam column node consists of a round steel pipe lower column, a square steel pipe upper column and a rectangular section steel beam, the bucket arch component consists of a lower bucket component, an arch component and an upper bucket component, and the soft steel-friction damper cooperative working device comprises a soft steel connecting rod, a column side horizontal plate, a beam connecting piece, a beam bottom surface horizontal plate, a left restraint plate, a right restraint plate, a friction energy consumption plate, a high-strength bolt, a bolt gasket and an annular reserved hole; the joint of the test piece is a steel column and a rectangular section steel beam connected with the steel column, and the joint of the lower column of the circular steel tube and the upper column of the square steel tube is reinforced through a square ribbed plate and a column top reinforcing ring; a bucket arch component is arranged at the node, and a mild steel-friction damper cooperative working device is attached to the bucket arch component; the mild steel-friction damper cooperative working device is positioned between the lower column of the circular steel tube and the steel beam with the rectangular cross section, the left restraint plate and the right restraint plate are mutually connected, and energy consumption is carried out through the friction energy consumption plate and the mild steel connecting rod, so that the welding seam at the joint of the flange of the beam end and the column is not easy to break, and the damage to the bucket arch component is reduced. The device can improve the anti-seismic performance of the steel structure archaized building system, and also keeps the aesthetic property of the structure system.
Description
Technical Field
The invention belongs to the field of steel structure systems of archaized buildings, and relates to an archaized building special-shaped steel node with cooperative energy consumption of a mild steel-friction damper and a cooperative energy consumption method.
Background
The archaized building is characterized in that under the modern technical condition, the shape and appearance of the ancient building are simulated by using modern building materials, and the shape, parts and the like of the traditional ancient building are used as decorations, so that the classical beauty of the ancient building is shown. The steel structure is applied to the archaized buildings, so that the novel buildings with historical characteristics and regional styles can be born and created, and the advantages of large steel structure strength-weight ratio, high industrial manufacturing degree, environmental protection, short construction period and the like can be exerted.
The bracket bucket component is installed between the pillar and the beam, and not only is the decoration, but also the beautiful effect is embodied, more importantly, the bracket is taken as the beam, the span of the beam can be shortened, the bearing load of the beam head is reduced, the shearing resistance bearing capacity of the beam head is increased, and the beam pillar can be prevented from deforming and inclining.
As one of the energy dissipation techniques, installing energy dissipation devices in the structural members is an effective method for improving the seismic performance of the structural system. The soft steel-friction damper cooperative working device is a device which consumes energy under the action of an earthquake by utilizing friction energy consumption of a friction energy consumption plate and soft steel plastic deformation, and not only can provide additional rigidity for a structure, but also can provide additional damping, so that the damage degree of the earthquake to the structure is reduced. The soft steel damper adopts low-yield-point steel, and the soft steel damper generates plastic deformation to dissipate energy by utilizing the low yield strength of the soft steel and prior to the structural yielding under the action of an earthquake. The mild steel and the friction damper are combined to form a mild steel-friction damper cooperative working device with stronger energy consumption capability, and the shock resistance of a structural system is obviously improved.
The flange welding position of the steel structure beam column node of the antique building, especially the connecting welding position of the flange of the beam end and the column is easy to break, so that the brittle failure of the beam column node is caused, and the bucket arch component at the beam column node is seriously cracked. Therefore, the problem of damage to the beam column nodes of the steel structure archaized building is solved, and the steel structure archaized building has important significance for enhancing the anti-seismic performance of the steel structure archaized building.
Disclosure of Invention
In order to overcome the defects of the prior art, the beam column node of the steel structure archaized building is optimized, the device is provided with the mild steel-friction damper cooperative working device at the beam column node to increase the node energy consumption, the device can consume the input earthquake energy in the loading process of the steel structure archaized building, and the welding seam at the connecting part of the beam end flange and the column is not easy to break, so that the damage to a dougong component is reduced, the anti-seismic performance of the steel structure archaized building system can be improved, and the attractiveness of the structure system is also maintained.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
according to an embodiment provided by the invention, the invention provides an antique building special-shaped steel node with soft steel-friction damper synergistic energy consumption, which comprises a beam column node consisting of a round steel pipe lower column, a square steel pipe upper column and a rectangular section steel beam;
the upper column of the square steel pipe is embedded in a groove at the top of the lower column of the round steel pipe, and a gap is reserved between the columns;
a bucket arch component is arranged at the joint of the round steel tube lower column and the square steel tube upper column and between the rectangular section steel beams, the bucket arch component comprises a lower bucket component, an arch component and an upper bucket component, a soft steel-friction damper is arranged in the arch component, the soft steel-friction damper is fixedly connected with the rectangular section steel beams through beam connecting pieces, and the soft steel connecting rods in the lower bucket component are connected with the round steel tube lower column and the square steel tube upper column connecting nodes;
under the action of low-cycle repeated load, at least one friction energy dissipation plate in the soft steel-friction damper moves and rubs relatively along the rectangular section steel beam, the round steel pipe lower column and the square steel pipe upper column connection node; the mild steel connecting rod is plastically deformed along the square steel pipe upper column.
Preferably, the mild steel-friction damper is located between the square steel pipe upper column and the rectangular section steel beam.
Preferably, the mild steel-friction damper comprises a left restraint plate, a right restraint plate and a friction energy dissipation plate, the left restraint plate and the right restraint plate are connected through a high-strength bolt, and the friction energy dissipation plate is padded between connecting plates of the left restraint plate and the right restraint plate.
Preferably, the top of the right restraint plate is connected with a beam connecting piece, and the beam connecting piece is connected to the steel beam with the rectangular section through a beam bottom horizontal plate.
Preferably, the bottom of the left restraint plate is connected with the lateral horizontal plates, and the pair of lateral horizontal plates are connected with the upper column of the square steel pipe through the mild steel connecting rod.
Preferably, the left restraint plate and the right restraint plate are connected in parallel, and the left restraint plate and the right restraint plate are respectively connected with the horizontal plate on the side of the column and the beam connecting piece at an angle of 45 degrees.
Preferably, the lower bucket member and the upper bucket member are in inverted trapezoidal structures, and the lower surface of the lower bucket member is internally tangent to the lower column of the circular steel tube; the horizontal plate on the inner side surface of the lower bucket component is connected with the upper column of the square steel pipe; and the horizontal plate at the bottom of the upper beam of the upper bucket component is welded and connected with the steel beam with the rectangular section.
Preferably, the arch component is a cuboid structure with a guide arc at the end part, the top of the arch component is connected with the trapezoidal table at the bottom of the upper bucket component, and the lower part of the side wall is tangent to the upper part of the inverted trapezoidal table.
Preferably, the round steel tube lower column and the square steel tube upper column node are conversion columns, a square ribbed plate is arranged in the column top of the round steel tube lower column, the square steel tube upper column penetrates through the column top reinforcing ring to extend into the column top of the round steel tube lower column, and the square ribbed plate is used for partially welding the column part of the square steel tube upper column inserted into the round steel tube lower column.
The invention further provides a mild steel-friction damper cooperative energy consumption method of the irregular steel node of the pseudo-classic architecture, which comprises the following steps:
applying low-cycle repeated load on the upper column of the square steel pipe to simulate actual earthquake load;
under the action of low-cycle repeated load, corners and relative displacement are generated among all parts of the irregular steel node of the pseudo-classic architecture, the upper column of the square steel pipe generates lateral displacement, and the corners and the relative displacement are generated among the steel beam with the rectangular cross section, the lower column of the circular steel pipe and the upper column of the square steel pipe;
the friction damper between the upper column of the square steel pipe and the steel beam with the rectangular cross section utilizes the relative movement friction energy consumption of the friction energy consumption plate to consume the corner energy between the upper column of the square steel pipe and the steel beam with the rectangular cross section; meanwhile, the mild steel connecting rod is plastically deformed under the action of the relative corner, so that the displacement energy between the square steel pipe upper column and the rectangular section steel beam is consumed.
The invention has the following beneficial effects:
1) adopt mild steel-friction damper to connect archaize building steel construction beam column node, can avoid the edge of a wing welding department, especially the easy fracture of beam-ends edge of a wing and post joint weld department, cause the brittle failure of beam column node, lead to the serious fracture problem of bucket arch component at beam column node. The beam column node, the bucket component, the arch component and the mild steel-friction damper form a mild steel-friction damper cooperative working device with stronger energy consumption capability, and the shock resistance of a structural system is obviously improved.
2) The friction damper is arranged at the node of the steel structure beam column of the archaized building, so that a certain additional rigidity can be provided for the node, and the earthquake energy input in the loading process can be consumed by utilizing the relative friction of the friction energy consumption plate; the soft steel connecting rod is adopted at the joint of the friction damper and the column, so that the energy transmitted into the column wall base material can be consumed by the deformation of the soft steel through the material property of the soft steel under the action of corner displacement, and the soft steel can work in cooperation with the friction damper to reduce the seismic energy transmitted to the structural system body; the soft steel connecting rod and the friction damper are coupled together, so that the seismic energy transmitted to each part of the beam-column joint can be consumed, the seismic performance of the structural system is improved more effectively, and the attractiveness of the structure is maintained.
Drawings
FIG. 1 is a perspective view of the overall construction of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a drawing of the mild steel-friction damper co-operating device of the present invention;
FIG. 4 is a drawing of a mild steel connecting member of the present invention;
FIG. 5 is a diagram of bucket arch components of the present invention;
FIG. 6 is a cross-sectional view of a beam-column weld of the present invention;
FIG. 7 is a schematic view of the structure of the reinforcing ring and the square ribbed plate of the present invention.
Wherein, 1 is the circular steel tube lower prop, 2 is the square steel tube upper prop, 3 is the rectangular cross section girder steel, 4 is the square ribbed slab, 5 is the column crown beaded finish, 6 is the mild steel connecting rod, 7 is the post side horizontal plate, 8 is the roof beam connecting piece, 9 is the bottom of the beam horizontal plate, 10 is left strake, 11 is right strake, 12 is the friction energy dissipation board, 13 is high strength bolt, 14 is the bolt gasket, 15 is annular preformed hole, 16 is the lower fill component, 17 is the arch component, 18 is the upper fill component.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the archaized building special-shaped steel node with soft steel-friction damper synergistic energy consumption provided by the invention comprises a beam column node consisting of a round steel pipe lower column 1, a square steel pipe upper column 2 and a rectangular section steel beam 3, wherein a bucket arch component is arranged at the joint of the round steel pipe lower column 1 and the square steel pipe upper column 2 and between the rectangular section steel beam 3, the bucket arch component comprises a lower bucket component 16, an arch component 17 and an upper bucket component 18, a soft steel-friction damper is arranged in the arch component 17, the soft steel-friction damper is fixedly connected with the rectangular section steel beam 3 through a beam connecting piece 8, and the round steel connecting rod in the lower bucket component 16 is connected with the joint of the round steel pipe lower column 1 and the square steel pipe upper column 2.
Referring to fig. 1, the top of the circular steel tube lower column 1 of the beam column node is provided with a square steel tube upper column 2, the square steel tube upper column 2 passes through a column top reinforcing ring 5 and extends into the top of the circular steel tube lower column 1, and the square steel tube upper column 2 is inserted into the circular steel tube lower column 1 through a square ribbed plate 4 and is partially welded and connected.
Referring to fig. 3, the mild steel-friction damper includes a left restraint plate 10, a right restraint plate 11, a friction energy dissipation plate 12 and a high-strength bolt 13, wherein annular preformed holes 15 are formed in end portions of the left restraint plate 10, the right restraint plate 11 and the friction energy dissipation plate 12, the high-strength bolt 13 penetrates through the annular preformed hole 15 to connect the left restraint plate 10 and the right restraint plate 11 in an inserting manner, and the friction energy dissipation plate 12 is padded between connecting portions of the left restraint plate 10 and the right restraint plate 11. The top of the right restraint plate 11 is connected with a beam connecting piece 8, the beam connecting piece 8 is connected to the rectangular section steel beam 3 through a connecting beam bottom surface horizontal plate 9, the connecting part of the beam connecting piece 8 and the beam bottom surface horizontal plate 9 is of a convex-concave groove mutual insertion structure, and a high-strength bolt 13 penetrates through and is connected with the connecting part padded with a bolt gasket 14. The bottom of the left restraint plate 10 is vertically connected with a lateral horizontal plate 7 of a column, and is connected with two pairs of mild steel connecting rods 6 through a pair of lateral horizontal plates 7 for quality inspection, and is connected with a square steel tube upper column 2.
In one embodiment, the two left restraint plates 10 are respectively connected with the two column side horizontal plates 7 in an equally-divided welding mode at an angle of 45 degrees, the two right restraint plates 11 are respectively connected with the left restraint plates 10 in a parallel mode, and the other sides of the left restraint plates 10 are connected with the beam connecting pieces 8 in an equally-divided welding mode at an angle of 45 degrees. The connecting part of the left restraint plate 10 and the right restraint plate 11 is provided with 3 friction energy dissipation plates 12 which are respectively clamped between the left restraint plate 10 and the right restraint plate 11.
Referring to fig. 4, the mild steel connecting component connects the mild steel connecting rod 6 with the horizontal plate 7 on the column side through the high-strength bolt 13, so as to ensure that the mild steel-friction damper cooperative device is tightly connected to the square steel tube upper column 2.
Referring to fig. 5, the bucket arch member includes a lower bucket member 16, an arch member 17, and an upper bucket member 18, and a mild steel-friction damper co-operating device is provided therein. The lower bucket member 16 and the upper bucket member 18 are in inverted trapezoid structures, the lower surface of the lower bucket member 16 is internally tangent to the round steel tube lower column 1, and the horizontal plate 7 on the inner side surface of the lower bucket member 16 is connected with the square steel tube upper column 2; the upper hopper component 18 is connected with the rectangular section steel beam 3 by welding through the upper beam bottom horizontal plate 9. The arch member 17 is a cuboid structure with a guide arc at the end part, the top of the arch member 17 is connected with the trapezoidal table at the bottom of the upper bucket member 18, and the lower part of the side wall is tangent with the upper part of the inverted trapezoidal table.
Wherein, the lower bucket component 16 is formed by welding 10 steel plates, the lower surface of the lower bucket component is internally tangent in the lower column 1 of the circular steel tube, the side length of the area of the upper surface is 10 centimeters longer than that of the lower surface, and the lower bucket component is in an inverted base shape. The arch member 17 is formed by welding 14 steel plates, wherein the lower part is a cuboid, one side of the arch member is connected with the square steel pipe upper column 2 and the lower bucket member 16 in a welding mode, the other side of the arch member is connected with the lower part of the upper bucket member 18 in a welding mode in an arc shape, and the upper part of the upper bucket member 18 is connected with the rectangular section steel beam 3 in a welding mode and is of an inverted base type.
Referring to fig. 6, circular steel tube lower prop 1 and square steel tube upper prop 2 are the conversion post, pass the top end of circular steel tube lower prop 1 with square steel tube upper prop 2, wherein, cylinder ribbed slab 4 gos deep into in 1 capital of circular steel tube lower prop to weld at the contact site, capital beaded finish 5 welds on 1 tops of circular steel tube lower prop, is connected with square steel tube upper prop 2.
Referring to fig. 7, the column top reinforcing ring 5 is a circular ring, the cylindrical ribbed plate 4 is radially connected with the circular steel tube lower column 1 from the column top reinforcing ring 5, and the column top reinforcing ring 5 is connected with the column top reinforcing ring 5
The specific installation steps are as follows:
the method comprises the following steps: welding the upper column 2 of the square steel pipe inside the lower column 1 of the round steel pipe, and connecting the upper column and the lower column by welding through a square ribbed plate 4; a column top reinforcing ring 5 is welded on the top of the round steel tube lower column 1 and is connected with the square steel tube upper column 2 in a welding way; and (3) welding and connecting the rectangular section steel beam 3 with the upper part of the square steel pipe upper column 2 to form a beam column node system with the steel structure archaized building.
Step two: the two horizontal plates 7 on the side surfaces of the square steel pipe upper column 2 are tightly connected through a mild steel connecting rod 6 by using a high-strength bolt 13 and a bolt gasket 14.
Step three: and two left restraint plates 10 are welded on the other side of the column side horizontal plate 7 on the right side, and the welding angle is 45 degrees.
Step four: and friction energy consumption plates 12 are arranged on the lower sides of the two left restraint plates 10, are sequentially connected with the right restraint plate 11 and the friction energy consumption plates 12, and are fastened and connected on the annular preformed holes 15 through high-strength bolts 13 and bolt gaskets 14.
Step five: the beam bottom surface horizontal plate 9 is tightly connected with the beam connecting piece 8 through a high-strength bolt 13 and a bolt gasket.
Step six: and the upper part of the beam bottom surface horizontal plate 9 is connected with the rectangular section steel beam 3 in a welding way.
Step seven: and a bucket member 16 is welded on the upper part of the joint of the round steel pipe lower column 1 and the square steel pipe upper column 2.
Step eight: the lower port of the arch member 17 is welded to the bucket member 16, the upper port of the arch member 17 is welded to the other bucket member 18, and the bucket member 18 is welded to the steel beam lower flange 3.
Note that: all welding is seamless welding, and welding rigidity is guaranteed.
The invention discloses a mild steel-friction damper collaborative energy consumption method of an archaized building special-shaped steel node, which comprises the following steps:
1) applying low-cycle repeated load on the upper column of the square steel pipe to simulate actual earthquake load;
2) under the action of low-cycle repeated load, beam-column joints generate large deformation under the action of corners and relative displacement, the upper square steel pipe column generates lateral displacement, corners and relative displacement are generated between the rectangular-section steel beam and the lower round steel pipe column as well as between the rectangular-section steel beam and the upper square steel pipe column, so that a connecting welding seam between the rectangular-section steel beam and the upper square steel pipe column is seriously cracked, a base material of the upper square steel pipe column wall is seriously damaged, the beam-column joints are subjected to brittle fracture, meanwhile, the welded part of the dougong component and the beam column is also cracked, and the dougong component is seriously deformed;
the beam column joint generates large deformation under the action of corners and relative displacement, and a friction damper between the upper column of the square steel tube and the steel beam with the rectangular section utilizes the relative movement friction energy consumption of a friction energy consumption plate to consume the corner energy between the upper column of the square steel tube and the steel beam with the rectangular section; meanwhile, the soft steel connecting rod is plastically deformed under the action of the relative corner to consume energy under the action of an earthquake, and the beam-column node is self-restored. Therefore, the friction damper and the mild steel connecting rod work together in a cooperative mode, damage to beam column nodes caused by relative corners can be consumed, energy under the action of relative displacement can be absorbed, cracking of welding seams between the beam column nodes is effectively inhibited, integrity of the bucket arch component is protected, anti-seismic performance of a structural system is improved, and attractiveness of the bucket arch component is kept.
The working mechanism of the invention is as follows: the soft steel-friction damper cooperative working device can provide enough rigidity and can also be rubbed by the energy dissipation plates which rub against each other, so that the earthquake energy is absorbed, and the earthquake damage is reduced; in order to ensure the reliable operation of the friction damper, the horizontal plate on the side surface of the column, the beam connecting piece, the horizontal plate on the bottom surface of the beam, the left restraint plate, the right restraint plate and the friction energy dissipation plate must be firm and have good rigidity, and the square ribbed plate and the column top reinforcing ring are firmly connected during assembly; the pretension loss in the high-strength bolt must be kept at a low level to avoid excessive friction change between the friction dissipative plates, thereby affecting the dissipative capacity of the mild steel-friction damper cooperative working device.
When the earthquake action is smaller, the soft steel-friction damper cooperative working device at the beam-column joint of the steel structure archaized building can provide certain rigidity for the whole structure. When the earthquake action is increased, the soft steel-friction damper cooperative work device converts kinetic energy into internal energy generated by friction, resistance bending moment is generated in a damping system due to the fact that the end portion of the soft steel-friction damper cooperative work device is constrained in a hinged mode, friction energy dissipation plates are pressed and rubbed with each other, bending resistance and rigidity of the node are enhanced, soft steel is used as a connecting rod, not only can the energy dissipation characteristic of the material be achieved, but also the energy dissipation capacity of the friction damper is increased, the working capacity of the friction damper is effectively improved, accordingly, damage to dougong components among steel structure archaized building nodes is reduced, the anti-seismic performance of a structural system is improved, and attractiveness is guaranteed.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (10)
1. A mild steel-friction damper cooperative energy consumption antique building special-shaped steel node is characterized by comprising a beam column node consisting of a round steel pipe lower column, a square steel pipe upper column and a rectangular section steel beam;
the upper column of the square steel pipe is embedded in a groove at the top of the lower column of the round steel pipe, and a gap is reserved between the columns;
a bucket arch component is arranged at the joint of the round steel tube lower column and the square steel tube upper column and between the rectangular section steel beams, the bucket arch component comprises a lower bucket component, an arch component and an upper bucket component, a soft steel-friction damper is arranged in the arch component, the soft steel-friction damper is fixedly connected with the rectangular section steel beams through beam connecting pieces, and the soft steel connecting rods in the lower bucket component are connected with the round steel tube lower column and the square steel tube upper column connecting nodes;
under the action of low-cycle repeated load, at least one friction energy dissipation plate in the soft steel-friction damper moves and rubs relatively along the rectangular section steel beam, the round steel pipe lower column and the square steel pipe upper column connection node; the soft steel connecting rod consumes energy along the upper column plastic deformation of the square steel pipe.
2. The archaized building shaped steel node with soft steel-friction damper for energy consumption coordination according to claim 1, wherein the soft steel-friction damper is positioned between an upper column of square steel pipe and a steel beam with rectangular section.
3. The antique building special-shaped steel joint with the mild steel-friction damper for cooperative energy consumption according to claim 1, wherein the mild steel-friction damper comprises a left restraint plate, a right restraint plate and a friction energy consumption plate, the left restraint plate and the right restraint plate are connected through a high-strength bolt, and the friction energy consumption plate is padded between connecting plates of the left restraint plate and the right restraint plate.
4. The mild steel-friction damper energy dissipating antique building profiled steel node in cooperation with claim 3, wherein the top of the right restraint panel is connected with a beam connector, and the beam connector is connected to the rectangular section steel beam through a beam bottom surface horizontal plate.
5. The mild steel-friction damper cooperative energy dissipation antique building deformed steel node according to claim 4, wherein the bottom of the left restraint plate is connected with lateral horizontal plates, and a pair of lateral horizontal plates are connected with the upper column of the square steel pipe through mild steel connecting rods.
6. The mild steel-friction damper energy-consumption-cooperative antique building deformed steel joint as claimed in claim 5, wherein the left and right constraining plates are connected in parallel, and are respectively connected with the column-side horizontal plate and the beam connector at an angle of 45 °.
7. The mild steel-friction damper cooperative energy consumption antique building special-shaped steel node as claimed in claim 1, wherein the lower bucket member and the upper bucket member are in an inverted trapezoidal table structure, the lower surface of the lower bucket member is inscribed in the lower column of the circular steel tube, and the horizontal plate on the inner side surface of the lower bucket member is connected with the upper column of the square steel tube; and the horizontal plate at the bottom of the upper beam of the upper bucket component is welded and connected with the steel beam with the rectangular section.
8. The mild steel-friction damper collaborative energy consumption antique building special-shaped steel node as claimed in claim 7, wherein the arch component is a cuboid structure with an arc guiding at the end, the top of the arch component is connected with the bottom trapezoidal platform of the upper bucket component, and the lower portion of the side wall is tangent to the upper portion of the inverted trapezoidal platform.
9. The mild steel-friction damper synergistic energy-consumption antique building special-shaped steel joint as claimed in claim 1, wherein the round steel tube lower column and the square steel tube upper column are conversion columns, a square ribbed plate is arranged in the top of the round steel tube lower column, the square steel tube upper column penetrates through a column top reinforcing ring to extend into the top of the round steel tube lower column, and the square ribbed plate is used for partially welding the square steel tube upper column inserted into the round steel tube lower column.
10. A mild steel-friction damper cooperative energy dissipation method based on the antique building special-shaped steel node of any one of claims 1 to 9, which is characterized by comprising the following steps:
applying low-cycle repeated load on the upper column of the square steel pipe to simulate actual earthquake load;
the square steel pipe upper column generates lateral displacement, and corners and relative displacement are generated among the rectangular section steel beam, the round steel pipe lower column and the square steel pipe upper column;
the friction energy dissipation plate of the mild steel-friction damper moves and rubs relatively to consume corner energy between the square steel pipe upper column and the rectangular section steel beam; the mild steel connecting rod of the mild steel-friction damper generates plastic deformation, and the displacement energy between the square steel pipe upper column and the rectangular section steel beam is consumed.
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| CN115948976A (en) * | 2022-12-19 | 2023-04-11 | 中交公路规划设计院有限公司 | Longitudinal combination toughness constraint system and method for large-span suspension bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115948976A (en) * | 2022-12-19 | 2023-04-11 | 中交公路规划设计院有限公司 | Longitudinal combination toughness constraint system and method for large-span suspension bridge |
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