CN115012521A - Assembly type node with self-resetting function and installation method - Google Patents
Assembly type node with self-resetting function and installation method Download PDFInfo
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- CN115012521A CN115012521A CN202210584814.9A CN202210584814A CN115012521A CN 115012521 A CN115012521 A CN 115012521A CN 202210584814 A CN202210584814 A CN 202210584814A CN 115012521 A CN115012521 A CN 115012521A
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- 238000000034 method Methods 0.000 title claims description 10
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- 230000006870 function Effects 0.000 claims abstract description 22
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- 238000005553 drilling Methods 0.000 claims description 3
- 239000002783 friction material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
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- 238000009435 building construction Methods 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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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
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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
-
- 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
- E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
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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
- E04B2001/2454—Connections between open and closed section profiles
Abstract
The invention relates to an assembled node with a self-resetting function, which comprises: the steel beam sleeve, the two first connecting plates and the rotary connecting piece are arranged on the steel beam sleeve; the steel beam sleeve is fixedly sleeved on the prefabricated column, and a cantilever section is arranged on the outer side wall of the steel beam sleeve and corresponds to the prefabricated beam in shape; the first connecting plate is made of SMA memory alloy materials, two ends of one first connecting plate are respectively fixed to the upper end of the cantilever section and the upper end of the precast beam, and two ends of the other first connecting plate are respectively fixed to the lower end of the cantilever section and the lower end of the precast beam; the rotating connecting piece is arranged at a gap between the cantilever section and the precast beam, one end of the rotating connecting piece is fixedly connected with the cantilever section, and the other end of the rotating connecting piece is fixedly connected with the precast beam. The invention can not only ensure the bearing capacity of the node under normal conditions, but also ensure that the node is not damaged under the action of earthquake; and the beam column has symmetrical mechanical characteristics under the relative rotational deformation of the beam column, and is suitable for the reciprocating motion of the structure under the action of earthquake.
Description
Technical Field
The invention relates to an assembly type node with a self-resetting function and an installation method, and belongs to the technical field of building construction.
Background
The existing assembly type self-reset energy consumption node mostly adopts prestressed steel strands, SMA materials and the like to provide reset force, and meanwhile, a reset device mostly adopts a construction field installation mode.
The invention discloses a multi-stage energy-consumption post-tensioning self-resetting node and an assembling method thereof, and relates to the multi-stage energy-consumption post-tensioning self-resetting node and the assembling method thereof, wherein the node can slide relatively, energy consumption is provided in a way of single-side friction of a T-shaped piece and a beam flange under small deformation, an SMA damper connected with a T-shaped plate starts to enter a phase change energy consumption stage along with the increase of deformation of a node opening, and a bolt rod for connecting the T-shaped piece and the beam flange and a beam flange long circular hole wall are allowed to contact and bear pressure through a long circular hole, so that the multi-stage energy consumption property is realized. The prior technical scheme has the defects that the used post-tensioning prestressed tendon realizes complete reset and is not beneficial to field construction operation; and under the action of earthquake, the node force transmission is converted into a hole wall pressure-bearing mode, and under extreme conditions, large extrusion stress is easy to generate, so that the hole wall is damaged by pressure bearing, and the integral stability of the structure is not facilitated.
The invention patent with the prior art patent number of 'CN 111021537A' discloses an energy-consuming self-resetting steel structure beam column node connecting device, and relates to an energy-consuming self-resetting steel structure beam column node connecting device, which comprises a steel frame column, a cantilever short beam formed by rigidly connecting one side of the steel frame column, and a connecting beam spliced at the other end of the cantilever short beam, wherein flanges and web splicing parts of the connecting beam and the cantilever short beam are connected through an energy-consuming connecting component, and a U-shaped steel damper is further arranged on the inner side of the flange splicing part of the connecting beam and the cantilever short beam; the bilateral symmetry position of connecting beam web is provided with a set of anchor board respectively, just all connect through the prestressing steel that sets up along the horizontal direction between the upper and lower both sides of steel frame post and anchor board. The defects of the prior art scheme are that the yield strength of the U-shaped damper adopted by the node is still high, hysteresis energy consumption is not easy to generate under medium and small earthquakes, the yield strength adjustable performance is poor, the damping design requirements of different functional structures cannot be fully met, and the rigidity of the structure is increased by the U-shaped damper, so that the rigidity of the whole structure is increased.
The utility model with the prior art patent number "CN 213174152U" discloses a prefabricated assembly type concrete self-resetting beam-column node device, which comprises two semi-rectangular frames above and below, wherein the left end and the right end of the two frames are respectively connected with the upper end and the lower end of two steel plates to form a rectangular frame structure; the upper part and the lower part in the rectangular frame structure are respectively provided with a hydraulic buffer device, and the left end and the right end of the hydraulic buffer device are respectively connected with the left end and the right end of the frame; a rotating device is arranged between the two hydraulic buffering devices, and the left end and the right end of the rotating device are connected with the steel plate respectively. The technical scheme has the defects that the rotating device is positioned in a beam-column joint area, the bending moment applied to the joint area under the action of an earthquake is large, and the possibility of brittle failure is high. Meanwhile, the hydraulic buffer device is high in price and not beneficial to daily maintenance and large-scale popularization and use of the node.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an assembly type node with a self-resetting function and an installation method, wherein a first connecting plate made of SMA (shape memory alloy) is arranged to connect a steel beam sleeve and a precast beam, so that the bearing capacity of the node under normal conditions can be ensured, and the node can be prevented from being damaged under the action of an earthquake; the beam column is provided with the rotary connecting piece, has symmetrical mechanical characteristics under the relative rotary deformation of the beam column, and is suitable for the reciprocating motion of the structure under the action of an earthquake.
The technical scheme of the invention is as follows:
in one aspect, the present invention provides an assembled node having a self-resetting function, including:
the steel beam sleeve, the two first connecting plates and the rotary connecting piece are arranged on the steel beam sleeve;
the steel beam sleeve is fixedly sleeved on the prefabricated column, and a cantilever section is arranged on the outer side wall of the steel beam sleeve and corresponds to the prefabricated beam in shape;
the first connecting plates are made of SMA memory alloy materials, two ends of one first connecting plate are respectively fixed to the upper end of the cantilever section and the upper end of the precast beam, and two ends of the other first connecting plate are respectively fixed to the lower end of the cantilever section and the lower end of the precast beam;
the rotating connecting piece is arranged at a gap between the cantilever section and the precast beam, one end of the rotating connecting piece is fixedly connected with the cantilever section, and the other end of the rotating connecting piece is fixedly connected with the precast beam.
Preferably, the rotational connector comprises a first ear plate and a second ear plate;
one end of the first lug plate is fixedly connected to the cantilever section, and the other end of the first lug plate is provided with a pin hole; and one end of the second lug plate is fixedly connected to the precast beam, the other end of the second lug plate is provided with a pin shaft, and the first lug plate and the second lug plate are in running fit with each other through the pin shaft and the pin hole.
Preferably, the periphery of the pin shaft is provided with an annular pin shaft gasket, and the surface of the pin shaft gasket is provided with a friction material.
Preferably, the connecting device further comprises two second connecting plates, and the second connecting plates are made of steel materials;
two ends of one first connecting plate are respectively fixed on the upper surface of the upper end of the cantilever section and the upper surface of the upper end of the precast beam, and two ends of the other first connecting plate are respectively fixed on the lower surface of the lower end of the cantilever section and the lower surface of the lower end of the precast beam;
and two ends of one second connecting plate are respectively fixed on the lower surface of the upper end of the cantilever section and the lower surface of the upper end of the precast beam, and two ends of the other second connecting plate are respectively fixed on the upper surface of the lower end of the cantilever section and the upper surface of the lower end of the precast beam.
Preferably, the first connection plate is of the "dog bone" type.
Preferably, the second connecting plate is H-shaped.
Preferably, a plurality of fixing holes are formed in both ends of the first connecting plate and the second connecting plate; and two ends of the first connecting plate and the second connecting plate are fixed through bolts penetrating through the cantilever sections and the precast beams.
In another aspect, the present invention provides a method for installing an assembly type node having a self-resetting function, including the steps of:
fixedly sleeving the steel beam sleeve at a preset position of the prefabricated column;
pre-drilling holes at the upper end and the lower end of the cantilever section and the precast beam;
respectively fixing two first connecting plates at preset positions of the cantilever section, the upper surface of the upper end of the precast beam and the lower surfaces of the cantilever section and the lower end of the precast beam;
fixing two second connecting plates at preset positions of the cantilever section, the lower surface of the upper end of the precast beam and the upper surfaces of the cantilever section and the lower end of the precast beam respectively; fixing the first connecting plate and the second connecting plate through bolts;
and fixing the first lug plate at the preset position of the cantilever section, fixing the second lug plate at the preset position of the precast beam, and connecting the pin shaft, the pin shaft gasket and the pin hole to finish the installation.
The invention has the following beneficial effects:
1. the assembled node with the self-resetting function is provided with the first connecting plate made of the SMA material, and is connected with the steel beam sleeve and the precast beam, so that the assembled node has excellent self-resetting characteristics and better energy consumption characteristics, the traditional self-resetting mode of prestressed tendons is avoided, tensioning at a construction site is not needed, the construction progress is accelerated, and through the self-resetting function, the bearing capacity of the node under normal conditions can be ensured, and the purpose that the node is not damaged under the action of an earthquake can be also ensured; the connecting device is provided with the rotary connecting piece, has symmetrical mechanical characteristics under the relative rotary deformation of the beam column, and is suitable for the reciprocating motion of the structure under the action of an earthquake.
2. According to the assembled node with the self-resetting function, the pin shaft gasket is arranged on the rotary connecting piece, friction energy consumption can be generated, energy consumption decoupling is realized through the first connecting plate and the pin shaft gasket, the design is convenient, the stress way is clear, and the mechanical property is reliable.
3. The assembled node with the self-resetting function is also provided with a second connecting plate made of steel materials, and is used for consuming energy and preventing the first connecting plate made of SMA materials from being partially bent, so that the organic balance between the energy consumption and the self-resetting is realized.
Drawings
FIG. 1 is a schematic diagram of an overall structure of a node according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first ear plate according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a second ear plate according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a first connecting plate according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second connecting plate in the embodiment of the present invention.
The drawings in the figures are illustrated as follows:
1. prefabricating a column; 2. prefabricating a beam; 3. a steel beam sleeve; 4. a first connecting plate; 5. a second connecting plate; 6. a first ear plate; 7. a second ear panel; 8. a pin shaft; 9. a pin shaft gasket; 10. a high-strength bolt; 11. and pre-tightening the bolts.
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.
It should be understood that the step numbers used herein are for convenience of description only and are not intended as limitations on the order in which the steps are performed.
It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The terms "comprises" and "comprising" indicate the presence of the described features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The term "and/or" refers to and includes any and all possible combinations of one or more of the associated listed items.
The first embodiment is as follows:
referring to fig. 1, an assembled node having a self-resetting function includes:
The steel beam sleeve 3 is fixedly sleeved on the precast column 1, a cantilever section is fixedly arranged on the outer side wall of the steel beam sleeve in the direction towards the precast beam, the shape of the cantilever section corresponds to that of the precast beam 2, and in the embodiment, the cantilever section and the precast beam 2 are in the shape of an I shape.
The first connecting plates 4 are made of SMA memory alloy materials, two ends of one first connecting plate 4 are respectively fixed to the upper flange of the cantilever section and the upper flange of the precast beam 2, and two ends of the other first connecting plate 4 are respectively fixed to the lower flange of the cantilever section and the lower flange of the precast beam 2; the splicing of the prefabricated column (1) and the prefabricated beam (2) joint is realized through the two first connecting plates 4, the self-resetting characteristic is realized through the SMA alloy material, the bending moment applied to the beam-column joint area is reduced, and the possibility of brittle failure of the beam-column joint area is reduced.
The rotating connecting piece is arranged at a gap between the cantilever section and the precast beam 2, one end of the rotating connecting piece is fixedly connected with the cantilever section, and the other end of the rotating connecting piece is fixedly connected with the precast beam 2; the rotating connecting piece can generate energy consumption when the beam column node is deformed under stress, and support is provided.
Referring to fig. 2 and 3, as a preferred embodiment of the present embodiment, the rotational connection member includes a first lug plate 6 and a second lug plate 7;
the first ear plate 6 comprises two arc plates, a plurality of fixing holes are correspondingly formed in one rectangular end of each arc plate, the two arc plates are connected to two sides of a preset position of the cantilever section, the two arc plates penetrate through the cantilever section through pre-tightening bolts and are screwed and fixed, and pin holes are correspondingly formed in the other ends of the two arc plates; second otic placode 7 one end weld in precast position department of precast beam 2, the round pin axle 8 is worn to be equipped with by the other end, first otic placode 6 and second otic placode 7 realize normal running fit through round pin axle 8 and pinhole, utilize the rotation connecting piece when rotating to produce the power consumption, improve the reset capability.
As a preferred embodiment of this embodiment, an annular pin spacer 9 is disposed on the outer periphery of the pin 8, and a friction material is disposed on the surface of the pin spacer 9; when the lug plate and the pin shaft gasket 9 rotate relatively, friction action is further generated, and friction energy consumption is generated. In practical application, the friction coefficient can be flexibly designed according to the designed anti-seismic requirement. Meanwhile, due to the existence of the pin shaft gasket 9, local extrusion deformation caused by relative sliding of the lug plates can be avoided, and the reliability of friction energy consumption is further ensured.
Referring to fig. 4 and 5, as a preferred embodiment of the present embodiment, two second connection plates 5 are further included, and the second connection plates 5 are made of steel;
two ends of one first connecting plate 4 are respectively fixed on the upper surface of the upper flange of the cantilever section and the upper surface of the upper flange of the precast beam 2, and two ends of the other first connecting plate 4 are respectively fixed on the lower surface of the lower flange of the cantilever section and the lower surface of the lower flange of the precast beam 2;
two ends of one second connecting plate 5 are respectively fixed to the lower surface of the upper flange of the cantilever section and the lower surface of the upper flange of the precast beam 2, and two ends of the other second connecting plate 5 are respectively fixed to the upper surface of the lower flange of the cantilever section and the upper surface of the lower flange of the precast beam 2;
first connecting plate 4 is used for realizing from the reset characteristic, and second connecting plate 5 is used for consuming energy and preventing that first connecting plate 4 from taking place local buckling, realizes consuming energy and from the organic balance of resetting, reduces and shakes back residual deformation, in the restoration after the earthquake, only needs first connecting plate 4 and second connecting plate 5 of simple heating or change SMA material, can resume the joint strength before the earthquake, restores convenient and fast.
As a preferred embodiment of this embodiment, the first connecting plate 4 is a "dog bone" shape with wider ends and thinner middle.
As a preferred embodiment of this embodiment, the second connecting plate 5 is "H" shaped, and has a shape substantially corresponding to the first connecting plate 4, and is provided with notches at both ends for receiving the cantilever segments and the precast girders 2.
As a preferred embodiment of this embodiment, two ends of the first connecting plate 4 and the second connecting plate 5 are both provided with a plurality of fixing holes; and two ends of the first connecting plate 4 and the second connecting plate 5 are fixed through high-strength bolts 11 penetrating through the cantilever sections and the precast beams 2. The bolt connection mode is adopted, the modularized installation degree is high, the device is suitable for field assembly, convenient and quick to construct, easy to disassemble, replace and repair, and conforms to the future development trend of the building industry
The second embodiment:
the embodiment provides an installation method of an assembly type node with a self-resetting function as described in the first embodiment, which specifically includes the following steps:
after prefabricated components in the assembled node with the self-resetting function, the prefabricated column 1 and the prefabricated beam 2 are produced in a corresponding factory in a standardized manner, pre-positioning is carried out on a factory assembly line, and pre-drilling is carried out on the cantilever section, the prefabricated beam 2, the first lug plate 6, the first connecting plate 4 and the second connecting plate;
sleeving and welding the steel beam sleeve 3 on a preset position of the precast column 1;
placing the two arc-shaped plates of the first lug plate 6 on two sides of a preset position of the cantilever section respectively, connecting the two arc-shaped plates through a pre-tightening bolt 11, primarily screwing the pre-tightening bolt 11, welding the second lug plate 7 on the preset position of the precast beam 2, and ensuring that the pin shaft 8 and the pin hole are positioned on the same horizontal line;
after the connection is finished, the assembled node with the self-resetting function can be transported to the site to finish the connection of each component;
fixing two first connecting plates 4 at preset positions of the cantilever section, the upper surface of the upper end of the precast beam 2 and the lower surfaces of the cantilever section and the lower end of the precast beam 2 respectively; fixing two second connecting plates 5 at preset positions of the cantilever section, the lower surface of the upper end of the precast beam 2 and the upper surfaces of the cantilever section and the lower end of the precast beam 2 respectively; connecting the first connecting plate 4 and the second connecting plate 5 through high-strength bolts 10, and primarily screwing the high-strength bolts 10;
the first lug plate 6, the second lug plate 7 and the pin shaft backing plate 9 are connected through the pin shaft 8, and after positioning and installation are completed, all high-strength bolts 10 and pre-tightening bolts 11 are screwed down to a target torque, so that installation is completed.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. An assembled node with a self-resetting function, comprising:
the steel beam sleeve (3), the two first connecting plates (4) and the rotary connecting piece;
the steel beam sleeve (3) is fixedly sleeved on the precast column (1), and a cantilever section is arranged on the outer side wall of the steel beam sleeve and corresponds to the precast beam (2) in shape;
the first connecting plates (4) are made of SMA memory alloy materials, two ends of one first connecting plate (4) are respectively fixed to the upper end of the cantilever section and the upper end of the precast beam (2), and two ends of the other first connecting plate (4) are respectively fixed to the lower end of the cantilever section and the lower end of the precast beam (2);
the rotating connecting piece is arranged at a gap between the cantilever section and the precast beam (2), one end of the rotating connecting piece is fixedly connected with the cantilever section, and the other end of the rotating connecting piece is fixedly connected with the precast beam (2).
2. The fabricated node with self-resetting function of claim 1, wherein:
the rotary connecting piece comprises a first lug plate (6) and a second lug plate (7);
one end of the first lug plate (6) is fixedly connected to the cantilever section, and the other end of the first lug plate is provided with a pin hole; second otic placode (7) one end fixed connection in on precast beam (2), the other end is provided with round pin axle (8), first otic placode (6) and second otic placode (7) are through round pin axle (8) and pinhole normal running fit.
3. The fabricated node with self-resetting function of claim 2, wherein:
the periphery of the pin shaft (8) is provided with an annular pin shaft gasket (9), and the surface of the pin shaft gasket (9) is provided with a friction material.
4. The fabricated node with self-resetting function of claim 1, wherein:
the connecting device also comprises two second connecting plates (5), wherein the second connecting plates (5) are made of steel materials;
two ends of one first connecting plate (4) are respectively fixed to the upper surface of the upper end of the cantilever section and the upper surface of the upper end of the precast beam (2), and two ends of the other first connecting plate (4) are respectively fixed to the lower surface of the lower end of the cantilever section and the lower surface of the lower end of the precast beam (2);
and two ends of one second connecting plate (5) are respectively fixed on the lower surface of the upper end of the cantilever section and the lower surface of the upper end of the precast beam (2), and two ends of the other second connecting plate (5) are respectively fixed on the upper surface of the lower end of the cantilever section and the upper surface of the lower end of the precast beam (2).
5. The fabricated node with self-resetting function of claim 4, wherein: the first connecting plate (4) is of a dog bone shape.
6. The fabricated node with self-resetting function of claim 4, wherein: the second connecting plate (5) is H-shaped.
7. The fabricated node with self-resetting function of claim 4, wherein:
a plurality of fixing holes are formed in the two ends of the first connecting plate (4) and the second connecting plate (5); and two ends of the first connecting plate (4) and the second connecting plate (5) are fixed by bolts penetrating through the cantilever sections and the precast beams (2).
8. The method for installing the fabricated node with the self-resetting function according to any one of claims 1 to 7, comprising the following steps:
fixedly sleeving the steel beam sleeve (3) at a preset position of the precast column (1);
pre-drilling holes at the upper end and the lower end of the cantilever section and the precast beam (2);
respectively fixing two first connecting plates (4) at preset positions of the cantilever section, the upper surface of the upper end of the precast beam (2) and the lower surfaces of the cantilever section and the lower end of the precast beam (2);
respectively fixing two second connecting plates (5) at preset positions of the cantilever section, the lower surface of the upper end of the precast beam (2), the cantilever section and the upper surface of the lower end of the precast beam (2); fixing the first connecting plate (4) and the second connecting plate (5) through bolts;
and fixing the first lug plate (6) at the preset position of the cantilever section, fixing the second lug plate (7) at the preset position of the precast beam (2), and connecting the pin shaft (8), the pin shaft gasket (9) and the pin hole to complete installation.
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| CN202210584814.9A CN115012521B (en) | 2022-05-27 | 2022-05-27 | Assembled node with self-resetting function and installation method |
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| Publication number | Publication date |
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| CN115012521B (en) | 2023-11-28 |
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