CN112049243A - Self-resetting steel frame beam-column connecting joint with transition connecting piece and construction method - Google Patents

Self-resetting steel frame beam-column connecting joint with transition connecting piece and construction method Download PDF

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Publication number
CN112049243A
CN112049243A CN202011118903.1A CN202011118903A CN112049243A CN 112049243 A CN112049243 A CN 112049243A CN 202011118903 A CN202011118903 A CN 202011118903A CN 112049243 A CN112049243 A CN 112049243A
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China
Prior art keywords
plate
connecting piece
steel beam
transition
shaped steel
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CN202011118903.1A
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Chinese (zh)
Inventor
李万润
高海旺
陈建华
杨明翰
刘学智
杜永峰
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Lanzhou University of Technology
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Lanzhou University of Technology
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Priority to CN202011118903.1A priority Critical patent/CN112049243A/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403Connection details of the elongated load-supporting parts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/98Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02Buildings, 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
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02Buildings, 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
    • E04H9/024Structures with steel columns and beams
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403Connection details of the elongated load-supporting parts
    • E04B2001/2406Connection nodes
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403Connection details of the elongated load-supporting parts
    • E04B2001/2418Details of bolting

Abstract

The self-resetting steel frame beam column connecting node provided with the transition connecting piece comprises an H-shaped steel column, an I-shaped steel beam, the transition connecting piece, a shape memory alloy connecting cover plate, a self-resetting inhaul cable unit, a friction energy dissipation element, an elastic energy dissipation element and a high-strength bolt. The transition connecting piece is connected with the I-shaped steel beam through the inhaul cable unit, the transition connecting piece is connected with the cantilever beam web through the high-strength bolt, the connecting position of the transition connecting piece and the I-shaped steel beam is provided with a friction energy dissipation element, an elastic energy dissipation element and a rubber cushion block, and the cantilever beam is connected with the I-shaped steel beam flange through the shape memory alloy connecting cover plate. According to the invention, the steel column does not need to be perforated, the strength of the column body cannot be weakened, the prestress is tensioned and positioned in a factory, corresponding bolts are only required to be installed on site, the prestress is not required to be tensioned, and the full assembly is realized; the device has the advantages of simple structure, high industrialization degree, high prestress precision, low labor cost, high energy consumption, self-resetting and the like.

Description

Self-resetting steel frame beam-column connecting joint with transition connecting piece and construction method
Technical Field
The invention relates to a full-assembly self-resetting steel frame beam column connecting node technology with a transition connecting piece, and belongs to the technical field of structural engineering.
Background
With the continuous acceleration of urbanization construction, the development of the technical field of buildings and the requirements of building industrialization are continuously improved, the buildings tend to be industrialized and the assembly type buildings continuously emerge in consideration of pollution problems and cost in the construction, and the reliability and convenience of the assembly type node connection are the keys influencing the safety application and the rapid development of the assembly type buildings.
The design of the building structure requires 'strong joint and weak member', and the unreasonable design of beam column joints can directly cause the building structure to be damaged or even collapsed under the action of earthquake load, thus endangering the life and property of people. A plurality of existing assembled nodes are arranged at the flange of a column, beam columns are directly connected through bolts, the column body is weakened to a certain extent, and existing researches show that welding is the most reliable column connection mode between the beam columns. In recent years, a structure capable of recovering functions becomes a research hotspot in the field of international earthquake engineering in recent years, the structure can recover the use functions without repair or slight repair after an earthquake, compared with the traditional assembly type structure, the self-reset structure considers damage control and economic loss after the earthquake on the basis of the assembly type structure, not only can meet the requirements of 'no damage to small earthquake, repairable middle earthquake and no fall over by large earthquake', but also can protect the life and property safety of people in the earthquake, and can also recover the use functions quickly after the earthquake.
The existing self-reset stay cable unit and the bolt connection are used for perforating a column, so that the column body is weakened, the structure is deformed and cannot be restored after the earthquake, the energy consumption of the mechanism is low, and the high-altitude tensioning prestress is difficult and low in precision in field installation.
Disclosure of Invention
The invention aims to provide a self-resetting steel frame beam-column connecting node with a transition connecting piece and a construction method.
The invention relates to a self-resetting steel frame beam-column connecting node with a transition connecting piece and a construction method, wherein the self-resetting steel frame beam-column connecting node with the transition connecting piece comprises an H-shaped steel column 1, an I-shaped steel beam 2, a transition connecting piece 3, a shape memory alloy connecting cover plate 5, a inhaul cable unit 4, a high-strength bolt I9 and a high-strength bolt II 10, and a high-strength limiting bolt 11; the transition connecting piece 3 is connected with the I-shaped steel beam 2 through a guy cable unit 4, and two ends of the guy cable are respectively anchored at an end plate 3-2 of the transition connecting piece and an I-shaped steel beam anchoring plate 2-1 through a prestressed anchorage device; the left connecting plate 3-1 of the transition connecting piece is connected with a cantilever section web plate through a high-strength bolt I9, the right connecting plate 3-3 is connected with a steel beam web plate through a high-strength limiting bolt 11, a friction energy dissipation element 8 is arranged between the inner side of the connecting plate 3-3 and the web plate of the I-shaped steel beam, and an elastic energy dissipation element 6 and a rubber cushion block 7 are arranged between the end part of the I-shaped steel beam and the end plate 3-2; the cantilever steel beam flange and the I-shaped steel beam flange are connected with a shape memory alloy connecting cover plate 5 through a high-strength bolt II 10.
The invention discloses a construction method of a self-resetting steel frame beam column connecting joint with a transition connecting piece, which comprises the following steps:
prefabricating each element in a factory according to the design size of a specific project, and performing rust prevention treatment on each metal element; fixing an elastic energy dissipation element 6 at a corresponding position of an end plate in a welding or anchoring mode, fixing a rubber cushion block 7 at a position, corresponding to a steel beam web, on the right side of the end plate in a bonding mode, fixing a friction energy dissipation element 8 at a position, contacting with the steel beam web, on the inner side of a right connecting plate of the end plate in a bonding mode, and temporarily fixing long bolt holes 2-3 at the beam end of an I-shaped steel beam 2 and long bolt holes 3-5 of a transition connecting piece 3 fixed with the elastic energy dissipation element 6, the rubber cushion block 7 and the friction energy dissipation element 8 through high-strength limiting bolts 11;
step (2), tensioning prestress: the prestressed steel strand penetrates through an I-shaped steel beam anchoring plate 2-1 and an end plate 3-2 of a transition connecting piece, the prestress is tensioned to a design value according to the specific engineering design requirement through a prestressed tensioning machine in a prefabrication factory, the prestressed tendon is anchored through a prestressed anchoring piece, the prestressed tensioning is completed, and the modular connection and prefabrication of the steel beam 2 and the transition connecting piece 3 are realized;
step (3) the connecting modules and other elements of the steel beam 2 and the transition connecting piece 3 are conveyed to the site, and the lower flange shape memory alloy connecting cover plate and the cantilever lower flange are fixed through the high-strength bolt 9 and are used as temporary supports for site assembly of the steel beam 2;
hoisting the modules of the steel beam 2 and the transition connecting piece 3 in place, and fixing the left connecting piece plate 3-1 and the steel column 1 with the cantilever section through the high-strength bolt 10;
installing bolts 9, assembling a flange shape memory alloy connecting cover plate 5 on the steel beam, correcting and checking each bolt again to ensure that the bolts are screwed in place, and performing integral rust prevention treatment on the nodes after the installation is finished;
and (6) avoiding deformation and collapse of the steel structure due to rapid temperature rise in a fire disaster, and performing fire prevention treatment on the structure by adopting an outer cladding layer method, a water filling cooling method, a shielding method, a swelling material method or a heat insulation and fire-resistant material, so that the heat transfer speed is reduced, and the time for temperature rise and strength weakening of the steel structure is prolonged.
The invention has the advantages that: 1. in order to strengthen the strength of the node and enable the plastic hinge to move outwards, the node is arranged at the back bending point of the steel beam, and the node is only required to be provided with a high-strength bolt on a construction site without tensioning prestress on the site, so that full assembly is realized; the transition connecting piece 3 and the I-shaped steel beam 2 are assembled together in a factory through prestress applied to two ends of the inhaul cable unit, the prestress precision is high, the transition connecting piece right connecting plate 3-1 is connected with the cantilever beam web only through the high-strength bolt group I10 on site, the cantilever beam is connected with the flange of the I-shaped steel beam through the shape memory alloy connecting cover plate 5, the bolts are convenient to fasten, the construction speed is high, the quality is high, and the assembled type development is adapted.
2. The transition connecting piece 3 comprises a left connecting plate 3-1, an end plate 3-2, a right connecting plate 3-3 and transverse stiffening ribs 3-4, is integrally prefabricated in a factory and high in overall strength, is connected with an I-shaped steel beam 2 through a guy cable unit 4 in the factory, the connecting plates 3-1 are symmetrically arranged on two sides of a web plate of a cantilever beam, and the connecting plates 3-1 on the two sides are connected with the web plate of the cantilever beam through high-strength bolts I9 on site, so that the full assembly of a node is realized, the prestress is not required to be tensioned on site, the installation is convenient and fast, and the stress.
3. A rubber cushion block 7 and a friction energy dissipation element 8 are arranged in a right connecting plate 3-2 of the connecting piece 3, and an elastic energy dissipation element 6 is arranged at a corresponding position of an end plate 3-2, so that the energy dissipation capacity of a node is improved; the friction energy dissipation element can be brass sheet, mild steel and the like; the elastic energy dissipation element can be a disc spring, a spiral spring, a rubber spring or any combination thereof; and the elastic energy dissipation element and the rubber cushion block can well protect the end part of the steel beam from being damaged.
4. According to the invention, the long bolt holes 2-3 are formed in the corresponding positions of the end parts of the steel beam, the long bolt holes 3-5 are formed in the right connecting plate of the transition connecting piece, and the two long bolt holes are staggered and intersected in the stressed rotation process of the steel beam, so that enough energy consumption space is provided for the rotary deformation of the node under the action of an earthquake, and the condition that the performance of the node is not influenced by insufficient space or unreasonable size of the bolt holes of the high-strength bolt 11 in the rotation process is.
5. The guy cable unit 4 of the present invention may be an element having an elastic restoring force or an element providing a prestress or a combination of both, and the element may be flexibly selected to provide a good restoring capability to the structural node by stretching the prestress.
6. According to the invention, the cantilever beam section is welded on the flange at one side of the H-shaped steel column 1, so that a hole does not need to be formed in the column body, and the weakening of the column body is reduced.
7. The shape memory alloy connecting cover plate 5 is used as an energy dissipation element, the beam ends of the high-strength bolts 10 are respectively fixed at the flanges of the cantilever beam and the steel beam 2, and arc-shaped extension areas are arranged, so that sufficient telescopic space is provided for nodes, energy dissipation can be realized under the action of small earthquake load, the original shape can be recovered after earthquake, under the action of large earthquake load, if the shape memory alloy connecting cover plate is plastically damaged, the structure can be recovered to be normally used only by replacing the connecting plate, the repair cost after earthquake is reduced, and the steel structure development method is a new direction.
Drawings
Fig. 1 is a three-dimensional view of the present invention, fig. 2 is a field installation view of the present invention, fig. 3 is a front view of the present invention, fig. 4 is a three-dimensional view of a transition piece, an elastic dissipative element, and a frictional dissipative element of the present invention, fig. 5 is a schematic view of the elastic dissipative element of the present invention, and fig. 6 is a three-dimensional view of a flange cover form of the present invention.
Detailed Description
The invention relates to a self-resetting steel frame beam-column connecting node with a transition connecting piece and a construction method, wherein the self-resetting steel frame beam-column connecting node with the transition connecting piece comprises an H-shaped steel column 1, an I-shaped steel beam 2, a transition connecting piece 3, a shape memory alloy connecting cover plate 5, a inhaul cable unit 4, a high-strength bolt I9 and a high-strength bolt II 10, and a high-strength limiting bolt 11; the transition connecting piece 3 is connected with the I-shaped steel beam 2 through a guy cable unit 4, and two ends of the guy cable are respectively anchored at an end plate 3-2 of the transition connecting piece and an I-shaped steel beam anchoring plate 2-1 through a prestressed anchorage device; the left connecting plate 3-1 of the transition connecting piece is connected with a cantilever section web plate through a high-strength bolt I9, the right connecting plate 3-3 is connected with a steel beam web plate through a high-strength limiting bolt 11, a friction energy dissipation element 8 is arranged between the inner side of the connecting plate 3-3 and the web plate of the I-shaped steel beam, and an elastic energy dissipation element 6 and a rubber cushion block 7 are arranged between the end part of the I-shaped steel beam and the end plate 3-2; the cantilever steel beam flange and the I-shaped steel beam flange are connected with a shape memory alloy connecting cover plate 5 through a high-strength bolt II 10.
The H-shaped steel column 1 comprises a cantilever beam section, the cantilever beam section is welded to one side flange of the H-shaped steel column, and bolt holes are formed in a cantilever beam web plate and the upper flange and the lower flange.
The transition connecting piece 3 comprises a left connecting plate 3-1, an end plate 3-2, a right connecting plate 3-3 and a transverse stiffening rib 3-4; the end plate comprises an end plate 3-2 and a right connecting plate 3-3, wherein a transverse stiffening rib 3-4 is welded between the end plate 3-2 and the right connecting plate 3-3, the transverse stiffening rib is used for enhancing the strength of the end plate, a long bolt hole 3-5 is formed in the corresponding position of the right connecting plate 3-3, a friction energy dissipation element 8 is arranged on the inner side of the long bolt hole, an elastic energy dissipation element 6 and a rubber cushion block 7 are arranged at the position, corresponding to the steel beam web, of the right side of the end plate, the elastic energy dissipation element can be fixed at the corresponding position of the end plate in a welding or.
The elastic energy dissipation element 6 is a disc spring, a spiral spring, a rubber spring or any combination thereof.
The guy cable unit 4 is selected from an element with elastic restoring force or an element capable of providing prestress or a combination of the two elements.
The inhaul cable unit 4 is an element with elastic restoring force or an element capable of providing prestress or a combination element of the two, and the number of the inhaul cable unit is calculated and selected according to specific engineering requirements.
The I-shaped steel beam 2 is symmetrically welded with an anchoring plate 2-1 and a transverse stiffening rib 2-2, and long bolt holes 2-3 are formed in corresponding positions of the end part of the steel beam; the anchoring plate is used for anchoring the other end of the inhaul cable, and the transverse stiffening rib is used for reinforcing the strength of the anchoring plate.
The middle part of the shape memory alloy connecting cover plate 5 is provided with an arc-shaped extension area.
The invention discloses a construction method of a self-resetting steel frame beam column connecting joint with a transition connecting piece, which comprises the following steps:
prefabricating each element in a factory according to the design size of a specific project, and performing rust prevention treatment on each metal element; fixing an elastic energy dissipation element 6 at a corresponding position of an end plate in a welding or anchoring mode, fixing a rubber cushion block 7 at a position, corresponding to a steel beam web, on the right side of the end plate in a bonding mode, fixing a friction energy dissipation element 8 at a position, contacting with the steel beam web, on the inner side of a right connecting plate of the end plate in a bonding mode, and temporarily fixing long bolt holes 2-3 at the beam end of an I-shaped steel beam 2 and long bolt holes 3-5 of a transition connecting piece 3 fixed with the elastic energy dissipation element 6, the rubber cushion block 7 and the friction energy dissipation element 8 through high-strength limiting bolts 11;
step (2), tensioning prestress: the prestressed steel strand penetrates through an I-shaped steel beam anchoring plate 2-1 and an end plate 3-2 of a transition connecting piece, the prestress is tensioned to a design value according to the specific engineering design requirement through a prestressed tensioning machine in a prefabrication factory, the prestressed tendon is anchored through a prestressed anchoring piece, the prestressed tensioning is completed, and the modular connection and prefabrication of the steel beam 2 and the transition connecting piece 3 are realized;
step (3) the connecting modules and other elements of the steel beam 2 and the transition connecting piece 3 are conveyed to the site, and the lower flange shape memory alloy connecting cover plate and the cantilever lower flange are fixed through the high-strength bolt 9 and are used as temporary supports for site assembly of the steel beam 2;
hoisting the modules of the steel beam 2 and the transition connecting piece 3 in place, and fixing the left connecting piece plate 3-1 and the steel column 1 with the cantilever section through the high-strength bolt 10;
installing bolts 9, assembling a flange shape memory alloy connecting cover plate 5 on the steel beam, correcting and checking each bolt again to ensure that the bolts are screwed in place, and performing integral rust prevention treatment on the nodes after the installation is finished;
and (6) avoiding deformation and collapse of the steel structure due to rapid temperature rise in a fire disaster, and performing fire prevention treatment on the structure by adopting an outer cladding layer method, a water filling cooling method, a shielding method, a swelling material method or a heat insulation and fire-resistant material, so that the heat transfer speed is reduced, and the time for temperature rise and strength weakening of the steel structure is prolonged.
The following description is given of the embodiments of the present invention, and it should be understood that the present invention is not limited to the embodiments, but rather, the present invention is applicable to various modifications and equivalent arrangements.
As shown in fig. 1, the self-resetting steel frame beam-column connection node provided with the transition connecting piece comprises an H-shaped steel column 1, an i-shaped steel beam 2, a transition connecting piece 3, a shape memory alloy connection cover plate 5, a guy cable unit 4, a high-strength bolt I9, a high-strength bolt II 10 and a high-strength limit bolt 11; the transition connecting piece 3 is connected with the I-shaped steel beam 2 through a guy cable unit 4, and two ends of a guy cable are respectively anchored at an end plate 3-2 of the transition connecting piece and an I-shaped steel beam anchoring plate 2-1; the left connecting plate 3-1 of the transition connecting piece is connected with a cantilever section web plate through a high-strength bolt I9, the right connecting plate 3-3 is connected with a steel beam web plate through a high-strength limiting bolt 11, a friction energy dissipation element 8 is arranged between the inner side of the connecting plate 3-3 and the web plate of the I-shaped steel beam, and an elastic energy dissipation element 6 and a rubber cushion block 7 are arranged between the end part of the I-shaped steel beam and the end plate 3-2; the cantilever steel beam flange and the I-shaped steel beam flange are connected with a shape memory alloy connecting cover plate 5 through a high-strength bolt II 10.
In the field installation process, the lower flange of the cantilever beam can be connected with the shape memory alloy connecting cover plate 5, the I-shaped steel beam 2 is placed on the connected lower flange shape memory alloy cover plate 5 to be used as a temporary support, the web plate of the cantilever beam and the high-strength bolt I9 at the left connecting plate 3-1 are installed, and finally the shape memory alloy connecting cover plate 5 at the upper flange is installed.
As shown in fig. 2, the cantilever section is welded to a side flange of the H-section steel column 1. The cantilever beam web and the flange are provided with corresponding rows of bolt holes, and the invention does not need to open holes at the column flange and does not affect the column strength and the like.
As shown in fig. 2, an anchoring plate 2-1 and a transverse stiffening rib 2-2 are welded at a web plate of a connecting end of an I-shaped steel beam to form a strong node area, so that the strength of the node is improved, and the strength of prestress is ensured; and the corresponding positions of the steel beam flanges are provided with rows of bolt holes for connecting energy dissipation elements.
As shown in FIG. 4, the transition connecting piece 3 is formed by welding a left connecting plate 3-1, an end plate 3-2, a right connecting plate 3-3 and a transverse stiffening rib 3-4 into a whole; the transverse stiffening ribs enable the strength of the transition connecting piece to be increased, the strength of the transition connecting piece is guaranteed, and prestress loss caused by the fact that the transition connecting piece yields first under the action of prestress is prevented.
As shown in fig. 5, the cable unit 4 may be an element having elastic restoring force or an element capable of providing pre-stress or a combination of the two, and may be selected in various forms according to actual needs and processing techniques.
As shown in fig. 6, the shape memory alloy connecting cover plate 5 can restore the original shape automatically through the characteristic of the shape memory alloy, and can be used continuously after a small earthquake load is acted, without replacing any element, as an energy dissipation element at the connecting part, so as to realize circular energy dissipation; meanwhile, a dog bone weakening area can be arranged in the middle of the cover plate, so that the area firstly forms a plastic hinge under the action of earthquake load; under the action of a major earthquake, if the cover plate is yielded, the original shape can not be recovered, and the cover plate can be continuously used only by replacing the connecting cover plate.

Claims (9)

1. The self-resetting steel frame beam column connecting node provided with the transition connecting piece is characterized by comprising an H-shaped steel column (1), an I-shaped steel beam (2), the transition connecting piece (3), a shape memory alloy connecting cover plate (5), a guy cable unit (4), a high-strength bolt I (9) and a high-strength bolt II (10), and a high-strength limiting bolt (11); the transition connecting piece (3) is connected with the I-shaped steel beam (2) through a self-resetting stay cable unit (4), and two ends of the stay cable are anchored at an end plate (3-2) of the transition connecting piece and an I-shaped steel beam anchoring plate (2-1) through pre-stressed anchors respectively; a left connecting plate (3-1) of the transition connecting piece is connected with a cantilever section web plate through a high-strength bolt I (9), a right connecting plate (3-3) is connected with a steel beam web plate through a high-strength limiting bolt (11), a friction energy dissipation element (8) is arranged between the inner side of the connecting plate (3-3) and the I-shaped steel beam web plate, and an elastic energy dissipation element (6) and a rubber cushion block (7) are arranged between the end part of the I-shaped steel beam and an end plate (3-2); and the cantilever steel beam flange and the I-shaped steel beam flange are connected with a shape memory alloy connecting cover plate (5) through a high-strength bolt II (10).
2. The self-restoring steel frame beam-column connection node provided with a transition piece according to claim 1, wherein: the H-shaped steel column (1) comprises a cantilever beam section, the cantilever beam section is welded to one side flange of the H-shaped steel column, and bolt holes are formed in a cantilever beam web plate and the upper flange and the lower flange.
3. The self-restoring steel frame beam-column connection node provided with a transition piece according to claim 1, wherein: the transition connecting piece (3) comprises a left connecting plate (3-1), an end plate (3-2), a right connecting plate (3-3) and a transverse stiffening rib (3-4); the end plate is characterized in that transverse stiffening ribs (3-4) are welded between the end plate (3-2) and the right connecting plate (3-3), the transverse stiffening ribs are used for enhancing the strength of the end plate, long bolt holes (3-5) are formed in the corresponding positions of the right connecting plate (3-3), friction energy dissipation elements (8) are arranged on the inner side of the right connecting plate, elastic energy dissipation elements (6) and rubber cushion blocks (7) are arranged at the positions, corresponding to steel beam webs, on the right side of the end plate, the elastic energy dissipation elements can be fixed at the corresponding positions of the end plate in a welding or anchoring mode, and the rubber cushion blocks can be fixed at the positions, corresponding to the.
4. The self-restoring steel frame beam-column connection node provided with a transition piece according to claim 1, wherein: the elastic energy dissipation element (6) is a disc spring, a spiral spring, a rubber spring or any combination thereof.
5. The self-restoring steel frame beam-column connection node provided with a transition piece according to claim 1, wherein: the guy cable unit (4) is an element with elastic restoring force or an element capable of providing prestress or a combination element of the two.
6. The self-restoring steel frame beam-column connection node provided with a transition piece according to claim 5, wherein: the inhaul cable unit (4) is a shape memory alloy copper core rod or a prestressed steel strand or a combination of the shape memory alloy copper core rod and the prestressed steel strand, wherein an element with elastic restoring force or an element capable of providing prestress or a combination of the shape memory alloy copper core rod and the prestressed steel strand is selected according to specific engineering requirements.
7. The self-restoring steel frame beam-column connection node provided with a transition piece according to claim 1, wherein: the I-shaped steel beam (2) is symmetrically welded with an anchoring plate (2-1) and a transverse stiffening rib (2-2), and long bolt holes (2-3) are formed in corresponding positions of the end part of the steel beam; the anchoring plate is used for anchoring the other end of the inhaul cable, and the transverse stiffening rib is used for reinforcing the strength of the anchoring plate.
8. The self-restoring steel frame beam-column connection node provided with a transition piece according to claim 1, wherein: the middle part of the shape memory alloy connecting cover plate (5) is provided with an arc-shaped extension area.
9. The construction method of the self-restoring steel frame beam-column connection node provided with the transition connecting piece of claim 1, characterized by comprising the steps of:
prefabricating each element in a factory according to the design size of a specific project, and performing rust prevention treatment on each metal element; fixing an elastic energy dissipation element (6) at a corresponding position of an end plate in a welding or anchoring mode, fixing a rubber cushion block (7) at a position corresponding to a steel beam web plate on the right side of the end plate in a bonding mode, fixing a friction energy dissipation element (8) at a position where the inner side of a right connecting plate of the end plate is contacted with the steel beam web plate in a bonding mode, and temporarily fixing long bolt holes (2-3) at the beam end of an I-shaped steel beam (2) and long bolt holes (3-5) of a transition connecting piece (3) fixed with the elastic energy dissipation element (6), the rubber cushion block (7) and the friction energy dissipation element (8) through high-strength limiting bolts (11);
step (2), tensioning prestress: the prestressed steel strand penetrates through an I-shaped steel beam anchoring plate (2-1) and an end plate (3-2) of a transition connecting piece, the prestress is tensioned to a design value according to the specific engineering design requirement through a prestressed tensioning machine in a prefabrication factory, a prestressed tendon is anchored through a prestressed anchoring piece, the prestressed tensioning is completed, and the modular connection and prefabrication of the steel beam (2) and the transition connecting piece (3) are realized;
step (3) the connecting modules and other elements of the steel beam (2) and the transition connecting piece (3) are conveyed to the site, and the lower flange shape memory alloy connecting cover plate and the cantilever lower flange are fixed through the high-strength bolt (9) and used as a temporary support for site assembly of the steel beam (2);
hoisting the modules of the steel beam (2) and the transition connecting piece (3) in place, and fixing the left connecting piece plate (3-1) and the steel column (1) with the cantilever section through the high-strength bolt (10);
step (5), installing bolts (9), assembling a flange shape memory alloy connecting cover plate (5) on the steel beam, correcting and checking each bolt again to ensure that the bolts are screwed in place, and performing integral rust prevention treatment on the nodes after the installation is finished;
and (6) avoiding deformation and collapse of the steel structure due to rapid temperature rise in a fire disaster, and performing fire prevention treatment on the structure by adopting an outer cladding layer method, a water filling cooling method, a shielding method, a swelling material method or a heat insulation and fire-resistant material, so that the heat transfer speed is reduced, and the time for temperature rise and strength weakening of the steel structure is prolonged.
CN202011118903.1A 2020-10-19 2020-10-19 Self-resetting steel frame beam-column connecting joint with transition connecting piece and construction method Pending CN112049243A (en)

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* Cited by examiner, † Cited by third party
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CN112376696A (en) * 2021-01-12 2021-02-19 湖南大学 Building node with multiple energy consumption and self-resetting characteristics and assembling method thereof
CN113529946A (en) * 2021-08-24 2021-10-22 西安建筑科技大学 Beam column energy consumption connecting piece based on U-shaped plate and construction method thereof
CN113529945A (en) * 2021-08-24 2021-10-22 西安建筑科技大学 Self-resetting beam-column energy consumption connecting piece and construction method thereof
CN115012521A (en) * 2022-05-27 2022-09-06 福建省中霖工程建设有限公司 Assembly type node with self-resetting function and installation method
CN115012524A (en) * 2022-06-27 2022-09-06 河北建筑工程学院 Self-resetting energy-consumption steel structure beam column connecting node
CN115341658A (en) * 2022-10-07 2022-11-15 青岛理工大学 Toughness assembly type multi-element energy-consumption limiting anti-collapse beam column node
CN116240978A (en) * 2023-03-22 2023-06-09 兰州理工大学 Self-resetting assembled beam column node with replaceable energy consumption element and construction method thereof

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112376696A (en) * 2021-01-12 2021-02-19 湖南大学 Building node with multiple energy consumption and self-resetting characteristics and assembling method thereof
CN112376696B (en) * 2021-01-12 2021-05-18 湖南大学 Building node with multiple energy consumption and self-resetting characteristics and assembling method thereof
CN113529946A (en) * 2021-08-24 2021-10-22 西安建筑科技大学 Beam column energy consumption connecting piece based on U-shaped plate and construction method thereof
CN113529945A (en) * 2021-08-24 2021-10-22 西安建筑科技大学 Self-resetting beam-column energy consumption connecting piece and construction method thereof
CN113529946B (en) * 2021-08-24 2022-06-07 西安建筑科技大学 Beam column energy consumption connecting piece based on U-shaped plate and construction method thereof
CN115012521A (en) * 2022-05-27 2022-09-06 福建省中霖工程建设有限公司 Assembly type node with self-resetting function and installation method
CN115012521B (en) * 2022-05-27 2023-11-28 福建省中霖工程建设有限公司 Assembled node with self-resetting function and installation method
CN115012524A (en) * 2022-06-27 2022-09-06 河北建筑工程学院 Self-resetting energy-consumption steel structure beam column connecting node
CN115341658A (en) * 2022-10-07 2022-11-15 青岛理工大学 Toughness assembly type multi-element energy-consumption limiting anti-collapse beam column node
CN115341658B (en) * 2022-10-07 2023-05-16 青岛理工大学 Toughness assembly type multi-element energy consumption limiting collapse-preventing beam column node
CN116240978A (en) * 2023-03-22 2023-06-09 兰州理工大学 Self-resetting assembled beam column node with replaceable energy consumption element and construction method thereof

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