CN114016608A - Assembly type beam-column strong shaft connecting joint and construction method thereof - Google Patents
Assembly type beam-column strong shaft connecting joint and construction method thereof Download PDFInfo
- Publication number
- CN114016608A CN114016608A CN202111453028.7A CN202111453028A CN114016608A CN 114016608 A CN114016608 A CN 114016608A CN 202111453028 A CN202111453028 A CN 202111453028A CN 114016608 A CN114016608 A CN 114016608A
- Authority
- CN
- China
- Prior art keywords
- steel plate
- shaped
- column
- shaped beam
- strong
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile
- E04B1/5812—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile of substantially I - or H - form
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
-
- 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
-
- 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
-
- 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
- E04B2001/2451—Connections between closed section profiles
Abstract
The invention discloses an assembled beam-column strong-axis connecting joint and a construction method thereof, wherein the assembled beam-column strong-axis connecting joint comprises an I-shaped beam, the I-shaped beam is horizontally arranged at one side or two sides of an I-shaped column, and the beam end of the I-shaped beam is tightly contacted with the outer side of a flange of the I-shaped column in the direction of a strong axis; the two node connecting piece groups are arranged at the nodes of the I-shaped beam and the I-shaped column and are symmetrically distributed on two sides of a web plate of the I-shaped beam; each node connecting piece group comprises two node connecting pieces, and the two node connecting pieces are positioned on the same side of a web plate of the I-shaped beam and are arranged in an up-and-down symmetrical mode along the horizontal axis of the I-shaped beam; the node connecting piece is fixedly connected with the I-shaped beam and the I-shaped column by adopting high-strength bolts; the concrete slab is horizontally arranged on the surface of the upper flange of the I-shaped beam; the beam-column connection has high bearing capacity of a rigid node, has the rotation capacity of a hinge point, has the rotation capacity under the action of external force, can dissipate the capacity through deformation, and has good ductility and bearing capacity.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to an assembled beam-column strong-shaft connecting joint and a construction method thereof.
Background
The assembled steel structure has the advantages of suitability for industrial production, higher recovery rate of garbage and waste materials, lighter components, suitability for transportation and assembly, convenience for installation and disassembly and the like; therefore, countries with mature building industrialization mostly adopt the fabricated steel structure to develop the building industrialization.
The beam column node is an important node in an assembled combined structure system; at present, welded rigid joints are mostly adopted, and although the welded rigid joints are high in bearing capacity, high in rigidity and simple in structure and are widely used in steel frames and combined frames, in earthquakes, a large number of welded steel joints designed and constructed according to specifications are subjected to unexpected brittle failure, and the joint connected by bolts is relatively low in failure degree.
Most of the existing semi-rigid bolt connections are connected by bolt welding, namely, the existing semi-rigid bolt connections are connected by outwards extending end plates or T-shaped steel; the connection structure still involves a large number of welds; in addition, generally, the welding seam is longer, the number of the welding seams is more, the welding workload is large, the quality of the welding seam is not easy to guarantee, and particularly, the welding position is easy to generate brittle failure due to stress concentration; at present, some novel semi-rigid bolt connection forms also appear, and although the use of welding is effectively reduced, the defects are that the number of connecting pieces is large and the size is large.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an assembled beam-column strong-shaft connecting node and a construction method thereof, and aims to solve the technical problems that a large number of bolted joints are adopted for connecting the existing semi-rigid bolt connecting node, the number of connecting pieces is large, and the size is large.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides an assembled beam-column strong shaft connecting node which comprises an I-shaped column, an I-shaped beam, two node connecting piece sets and a concrete slab, wherein the I-shaped column is fixedly connected with the concrete slab; the I-shaped beam is horizontally arranged on one side or two sides of the I-shaped column, and the beam end of the I-shaped beam is tightly contacted with the outer side of the flange of the I-shaped column in the strong axis direction;
the two node connecting piece groups are arranged at the nodes of the I-shaped beam and the I-shaped column and are symmetrically distributed on two sides of a web plate of the I-shaped beam; each node connecting piece group comprises two node connecting pieces, and the two node connecting pieces are positioned on the same side of a web plate of the I-shaped beam and are arranged in an up-and-down symmetrical mode along the horizontal axis of the I-shaped beam; the node connecting piece is fixedly connected with the I-shaped beam and the I-shaped column by adopting high-strength bolts;
the concrete slab is horizontally arranged on the surface of the upper flange of the I-shaped beam, the lower surface of the concrete slab is fixedly connected with the upper flange of the I-shaped beam, and the end part of the concrete slab is tightly contacted with the flange of the I-shaped column and the outer surface of the web plate.
Furthermore, the node connecting piece comprises a first steel plate, a second steel plate and a third steel plate; the first steel plate is vertically arranged, the second steel plate is horizontally arranged, and the first steel plate and the second steel plate are vertically fixed to form an L-shaped connecting structure; the third steel plate is vertically arranged at the end part of the L-shaped structure and is close to one end of the I-shaped column;
the first steel plate is fixedly connected with a web plate of the I-shaped beam through a high-strength bolt; the second steel plate is fixedly connected with the upper flange or the lower flange of the I-shaped beam through a high-strength bolt; the third steel plate is fixedly connected with a flange of the I-shaped column in the direction of the strong axis through a high-strength bolt.
Furthermore, the first steel plate and the second steel plate are fixed by welding or are in an integrated forming structure; and the third steel plate and the first steel plate or the second steel plate are fixed by welding or are in an integral forming structure.
Furthermore, the sizes of the first steel plate, the second steel plate and the third steel plate in the same node connecting piece are mutually independent; the minimum size of the first steel plate, the second steel plate and the third steel plate is zero, and the minimum size of at most one steel plate in the first steel plate, the second steel plate and the third steel plate is zero.
Further, the sizes of the first steel plate, the second steel plate and the third steel plate include a long side size, a short side size or a thickness of the steel plates.
Furthermore, a plurality of shear connectors are arranged between the concrete slab and the I-shaped beam, the upper ends of the shear connectors extend into the concrete slab, and the lower ends of the shear connectors are fixedly connected with the upper flange of the I-shaped beam.
Furthermore, the plurality of shear connectors are uniformly distributed in two rows along the horizontal axis of the I-shaped beam.
Further, the concrete slab comprises a concrete casting body and a slab body reinforcement cage; the plate body steel reinforcement cage is formed by uniformly binding a plurality of longitudinal steel reinforcements and a plurality of transverse steel reinforcements, and the concrete casting body is wrapped on the outer side of the plate body steel reinforcement cage.
The invention also provides a construction method of the assembled beam-column strong shaft connecting joint, which comprises the following steps:
processing and manufacturing an I-shaped beam, an I-shaped column and a node connecting piece according to design requirements;
installing an I-shaped column, and hoisting an I-shaped beam to a preset installation position; fixedly connecting the node connecting piece with the I-shaped beam and the I-shaped column by using a high-strength bolt so as to fixedly connect the I-shaped beam and the I-shaped column together;
and (4) casting a concrete slab on the surface of the upper flange of the I-shaped beam in situ.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a strong shaft connecting node of an assembled beam column and a construction method thereof, wherein the beam end of an I-shaped beam is in close contact with the outer side of a flange of the I-shaped column in the direction of a strong shaft, and a node connecting piece is arranged between the I-shaped beam and the I-shaped column; the node connecting pieces are symmetrically arranged in pairs and fixedly connected with the I-shaped beam and the I-shaped column through high-strength bolts, and semi-rigid bolt connecting nodes are formed at beam column strong shaft connecting nodes; the deformation and stress performance of the semi-rigid bolt connection node is between complete rigidity and ideal hinging; therefore, the beam-column strong shaft connecting node has high bearing capacity of a rigid node, also has the rotation capacity of a hinge point, has the rotation capacity under the action of external force, can dissipate capacity through deformation, and has good ductility and bearing capacity.
Furthermore, the joint connecting piece is formed by splicing the first steel plate, the second steel plate and the third steel plate, the structure is simple, the length of a welding line is short, the number of the welding lines is small, the existence of residual stress of a heat affected zone in the welding process is greatly reduced, the mechanical property of the joint connecting piece is easily guaranteed, and the joint connecting piece is not easy to generate brittle failure under the action of external force.
Furthermore, the sizes of the first steel plate, the second steel plate and the third steel plate in the same node connecting piece are mutually independent, the size and the form of the node connecting piece are selected according to the position of a node, the type of a beam and the stress condition of a member, and the second steel plate, the third steel plate and the first steel plate with the larger size or the first steel plate with the smaller size can be adopted or the first steel plate is not arranged under the condition of larger bending moment and smaller shearing force; under the condition of smaller bending moment and larger shearing force, a first steel plate with larger size, a third steel plate and a second steel plate with smaller size can be adopted or the second steel plate is not arranged; the bending moment is resisted by the high-strength bolt of the third steel plate in a tension mode, the friction between the second steel plate and the upper and lower flanges of the I-shaped beam and the shearing of the high-strength bolt, and the shearing force is resisted by the friction between the third steel plate and the flange in the strong axis direction of the I-shaped column and the friction between the first steel plate and the web plate of the I-shaped beam and the shearing of the corresponding high-strength bolt. Under the condition of large bending moment and shearing force, three steel plates are arranged and act together to resist the bending moment and the shearing force.
Furthermore, the shear connector is arranged between the concrete slab and the I-shaped beam, and can resist the longitudinal shear force between the concrete and the I-shaped beam, so that the free slippage between the concrete slab and the I-shaped beam is avoided, and the purposes of common acceptance and coordinated deformation are realized; meanwhile, the lifting force between the concrete slab and the I-shaped beam can be resisted, and the stability and the reliability of the structure are ensured.
According to the fabricated beam-column strong-shaft connecting joint and the construction method thereof, I-shaped beams and I-shaped columns are prefabricated and bolt holes are formed in a factory; the shear connector on the I-shaped beam is prefabricated in a factory and assembled in place, and then is transported to a construction site; connecting the I-shaped beam and the I-shaped column through the two node connecting piece groups and the high-strength bolt; finally, binding steel bars on site and pouring a reinforced concrete slab, so that the construction of the fabricated node is realized; according to the invention, the beam-column connecting joint has a simple structure, is convenient to construct and apply, has stronger deformability, clear stress, strong bearing capacity and stronger energy consumption capacity, and can be applied to a standardized assembly type steel frame combined structure; under the condition of ensuring good stress performance of semi-rigid connection, the invention has short and few welding seams of the connecting piece, thereby greatly reducing the quality and performance problems possibly caused by the welding seams; the node connecting pieces are simple in form and small in quantity, and batch production of a factory assembly line is facilitated; in addition, the node connecting pieces are uniformly distributed on the inner sides of flanges of the I-shaped beam and the I-shaped column, so that the space utilization rate of the nodes is guaranteed to a great extent.
Drawings
FIG. 1 is a schematic overall structure diagram of a fabricated beam-column strong-axis connection node according to an embodiment;
FIG. 2 is a schematic elevation structure view of a strong axis connection node of the fabricated beam column according to the embodiment;
FIG. 3 is a schematic sectional view taken along line A-A of a strong axis connection node of an assembled beam column according to an embodiment;
FIG. 4 is a side view of a beam slab in the fabricated beam-column strong-axis connection node according to the embodiment;
FIG. 5 is an elevation view of a beam slab joint in the fabricated beam-column strong-axis connection joint according to the embodiment;
FIG. 6 is a schematic structural diagram of a joint connecting member of the fabricated beam-column strong-axis connecting joint according to the embodiment;
fig. 7 is an explosion effect diagram of the assembled beam-column strong-axis connection node according to the embodiment.
The concrete slab comprises 1I-shaped column, 2I-shaped beam, 3 concrete casting bodies, 4 plate body reinforcement cages, 5 shear connectors, 6 node connectors, 7 high-strength bolts, 8 concrete plates, 9 first steel plates, 10 second steel plates and 11 third steel plates.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the following embodiments further describe the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides an assembled beam-column strong shaft connecting joint which comprises an I-shaped column 1, an I-shaped beam 2, two joint connecting piece groups, a plurality of shear connectors 5, a plurality of high-strength bolts 7 and a concrete slab 8.
The I-shaped column 1 is vertically arranged, and the I-shaped beam 2 is horizontally arranged on one side or two sides of the I-shaped column 1; wherein, the beam end of the I-shaped beam 2 is closely contacted with the outer side of the flange of the I-shaped column 1 in the direction of the strong axis; the two node connecting piece groups are arranged at the nodes of the I-shaped beam 2 and the I-shaped column 1 and are symmetrically distributed on two sides of a web plate of the I-shaped beam 2.
Each node connecting piece group comprises two node connecting pieces 6, and the two node connecting pieces 6 are positioned on the same side of a web plate of the I-shaped beam 2 and are arranged up and down symmetrically along the horizontal axis of the I-shaped beam 2; the node connecting piece 6 is fixedly connected with the I-shaped beam 2 and the I-shaped column 1 by adopting a high-strength bolt 7; the concrete slab 8 is horizontally arranged on the surface of the upper flange of the I-shaped beam 2, the lower surface of the concrete slab 8 is fixedly connected with the upper flange of the I-shaped beam 2, and the end part of the concrete slab 8 is tightly contacted with the flange of the I-shaped column 1 and the outer surface of the web plate.
The plurality of shear connectors 5 are uniformly arranged between the I-shaped beam 2 and the concrete slab 8, the upper ends of the shear connectors 5 extend into the concrete slab 8, and the lower ends of the shear connectors are fixedly connected with the upper flange of the I-shaped beam 2; preferably, the shear connectors 5 are evenly distributed in two rows along the horizontal axis of the i-beam 2.
In the invention, two node connecting pieces in each node connecting piece group have the same structure; the node connecting piece 6 comprises a first steel plate 9, a second steel plate 10 and a third steel plate 11; the first steel plate 9 is vertically arranged, the second steel plate 10 is horizontally arranged, and the first steel plate 9 and the second steel plate 10 are vertically fixed to form an L-shaped connecting structure; the third steel plate 11 is vertically arranged at the end part of the L-shaped structure and is arranged close to one end of the I-shaped column 1.
The first steel plate 9 is fixedly connected with a web plate of the I-shaped beam 2 through a high-strength bolt 7; the second steel plate 10 is fixedly connected with the upper flange or the lower flange of the I-shaped beam 2 through a high-strength bolt 7; the third steel plate 11 is fixedly connected with a flange in the direction of a strong axis of the I-shaped column 1 through a high-strength bolt 7; in the invention, the first steel plate 9, the second steel plate 10 and the third steel plate 11 are all provided with bolt holes so as to enable the high-strength bolt 7 to penetrate through, and semi-rigid fixed connection between the node connecting piece 6 and the I-shaped column 1 or the I-shaped beam 2 is realized.
In the invention, a first steel plate 9 and a second steel plate 10 are welded and fixed or integrally formed; the third steel plate 11 and the first steel plate 9 or the second steel plate 10 are fixed by welding or are in an integral forming structure; the sizes of the first steel plate 9, the second steel plate 10 and the third steel plate 11 in the same node connecting piece 6 are independent; wherein the minimum dimension of the first steel plate 9, the second steel plate 10 and the third steel plate 11 is zero, and the minimum dimension of at most one steel plate in the first steel plate 9, the second steel plate 10 and the third steel plate 11 is zero; preferably, the dimensions of the first, second and third steel plates 9, 10, 11 include the long side dimension, short side dimension or thickness of the steel plates.
The concrete slab 8 comprises a concrete casting body 3 and a plate body reinforcement cage 4, and the plate body reinforcement cage 4 is formed by uniformly binding a plurality of longitudinal reinforcements and a plurality of transverse reinforcements; the concrete casting 3 is wrapped on the outer side of the plate body reinforcement cage 4, and the concrete casting 3 is formed by cast-in-place construction.
The construction method comprises the following steps:
the invention relates to a construction method of a strong shaft connecting joint of an assembled beam column, which comprises the following steps:
and 3, casting a concrete slab on the surface of the upper flange of the I-shaped beam 2 in situ.
Working principle or stress principle:
according to the assembled beam-column strong-shaft connecting node, the node connecting pieces are symmetrically arranged in pairs and fixedly connected with an I-shaped beam and an I-shaped column through high-strength bolts, and a semi-rigid bolt connecting node is formed at the beam-column strong-shaft connecting node; the deformation and the stress performance of the semi-rigid bolt connection node are between complete rigidity and ideal hinging; therefore, the high-bearing-capacity rigid joint has high bearing capacity of a rigid joint and also has the rotation capacity of a hinge point; under the action of external force, the steel plate has certain rotation capacity, can dissipate energy through deformation, and has good ductility and bearing capacity.
In the invention, under the condition of ensuring good stress performance of semi-rigid connection, the length of the welding seam of the joint connecting piece is short, the number of the welding seams is small, the existence of residual stress of a heat affected zone is greatly reduced, the mechanical property of the joint connecting piece is easily ensured, and brittle failure is not easy to occur under the action of external force; secondly, the node connecting pieces are simple in form and small in number; the node connecting piece can be formed by welding only one short welding line or welding an angle steel and one steel plate or welding three steel plates through twice bending of one L-shaped steel plate, and the node connecting piece has various forms and is convenient for batch production of a factory assembly line; and because the connecting pieces are all arranged on the inner side of the beam flange, the space utilization rate of the node is ensured to a great extent.
In the invention, the bending moment of the node area is resisted by the tension of the high-strength bolt of the third steel plate, the friction between the second steel plate and the upper and lower flanges of the I-shaped beam and the shearing of the high-strength bolt, and the shearing force is resisted by the friction between the third steel plate and the flange in the direction of the strong axis of the I-shaped column and the friction between the first steel plate and the web plate of the I-shaped beam and the shearing of the corresponding high-strength bolt; therefore, under the condition of large bending moment and shearing force, three steel plates are arranged and act together to resist the bending moment and the shearing force.
Examples
As shown in fig. 1-7, the nodes of the i-shaped beams 2 are symmetrically arranged on two sides of the i-shaped column 1 as an example; the embodiment provides an assembled beam column strong shaft connecting node, which comprises an I-shaped column 1, two I-shaped beams 2, four node connecting piece groups, a plurality of shear connectors 5, a plurality of high-strength bolts 7 and a concrete slab 8.
The I-shaped column 1 is vertically arranged, and the two I-shaped beams 2 are horizontally and symmetrically arranged on two sides of the I-shaped column 1; the beam end of the I-shaped beam 2 is connected with the flange of the I-shaped column 1 in the direction of the strong axis; a plurality of shear connectors 5 are arranged on the upper surface of the upper flange of the I-shaped beam 2; the plurality of shear connectors 5 are uniformly distributed in two rows along the horizontal axis of the I-shaped beam 2; the upper flange, the lower flange and the web plate at the beam end of the I-shaped beam 2 are provided with bolt holes for high-strength bolts 7 to penetrate through so as to be connected with the node connecting element group.
In this embodiment, two of the node connecting member sets are arranged between one of the i-shaped beams 2 and the i-shaped column 1, and the remaining two node connecting member sets are arranged between the other i-shaped beam 2 and the i-shaped column 1; the following description takes an installation structure of two node connecting element groups as an example, and specifically includes the following steps:
the two node connecting piece groups are symmetrically distributed on two sides of a web plate of one I-shaped beam 2, and each node connecting piece group comprises two node connecting pieces 6; the two node connecting pieces 6 are positioned on the same side of the web plate of the I-shaped beam 2 and are arranged up and down symmetrically along the horizontal axis of the I-shaped beam 2; the node connecting piece 6 is fixedly connected with the I-shaped beam 2 and the I-shaped column 1 through high-strength bolts 7.
The node connecting piece 6 comprises a first steel plate 9, a second steel plate 10 and a third steel plate 11; the first steel plate 9 is vertically arranged, and the second steel plate 10 is horizontally arranged; the first steel plate 9 and the second steel plate 10 are vertically fixed to form an L-shaped connecting structure; the third steel plate 11 is vertically arranged at the end part of the L-shaped structure and is arranged close to one end of the I-shaped column 1.
The first steel plate 9 is fixedly connected with a web plate of the I-shaped beam 2 through a high-strength bolt 7; the second steel plate 10 is fixedly connected with the upper flange or the lower flange of the I-shaped beam 2 through a high-strength bolt 7; the third steel plate 11 is fixedly connected with a flange in the direction of a strong axis of the I-shaped column 1 through a high-strength bolt 7; the first steel plate 9, the second steel plate 10 and the third steel plate 11 are all provided with bolt holes so that the high-strength bolts 7 penetrate through the bolt holes, and semi-rigid fixed connection between the node connecting piece 6 and the I-shaped beam 2 or the I-shaped column 1 is achieved.
In this embodiment, a welding fixing or integral forming structure is adopted between the first steel plate 9 and the second steel plate 10, and a welding fixing or integral forming structure is adopted between the third steel plate 11 and the first steel plate 9 or the second steel plate 10; the sizes of the first steel plate 9, the second steel plate 10 and the third steel plate 11 in the same node connecting piece 6 are independent; wherein the minimum dimension of the first steel plate 9, the second steel plate 10 and the third steel plate 11 is zero, and the minimum dimension of at most one steel plate in the first steel plate 9, the second steel plate 10 and the third steel plate 11 is zero; that is, the size of two steel plates in the first steel plate 9, the second steel plate 10 and the third steel plate 11 must be zero at the same time; the dimensions of the first steel plate 9, the second steel plate 10, and the third steel plate 11 include the long side dimension, the short side dimension, or the thickness of the steel plates.
In the embodiment, the sizes of the first steel plate 9, the second steel plate 10 and the third steel plate 11 in the node connecting piece 6 are reasonably selected according to the stress condition and the size of a component of an actual project under the condition of meeting the national industry standard requirements; the first steel plate 9, the second steel plate 10 and the third steel plate 11 are provided with at least one bolt hole, the number of the bolt holes and the distance between adjacent bolt holes are calculated according to stress, and the requirements of the current steel structure specification are met; the sizes of the first steel plate 9, the second steel plate 10 and the third steel plate 11 in the same node connecting piece are independent from each other, and according to the position of the node, for example: a cross node or an edge node; or beam types, such as: the main beam, the secondary beam or the main and secondary beams are connected; or the size and the form of each steel plate in the node connecting piece are selected according to the stress condition of the member; under the condition of large bending moment and small shearing force, a second steel plate 10 and a third steel plate 11 with larger sizes and a first steel plate 9 with smaller sizes can be adopted or the first steel plate 9 is not arranged; in the case of a small bending moment and a large shearing force, a first steel plate 9 with a large size, a third steel plate 11 and a second steel plate 10 with a small size can be used or the second steel plate 10 is not arranged. The bending moment is resisted by tension of the high-strength bolt 7 of the third steel plate 11, friction of the second steel plate 10 and the upper and lower flanges of the I-shaped beam 2 and shearing of the high-strength bolt 7, and the shearing force is resisted by the friction of the third steel plate 11 and the flange of the I-shaped column 1 in the direction of the strong axis and the first steel plate 9 and the web plate of the I-shaped beam 2 and the shearing of the corresponding high-strength bolt 7. Under the condition of large bending moment and shearing force, three steel plates are arranged and act together to resist the bending moment and the shearing force.
In this embodiment, the node connecting piece can be formed by welding only a short welding line or by welding an angle steel and a steel plate or welding three steel plates through twice bending of an L-shaped steel plate, and the form is various. Because the form is simple, the number of welding lines is short, the existence of residual stress of a heat affected zone is greatly reduced, the mechanical property is easily ensured, and the brittle failure is not easy to occur under the action of external force.
The concrete plate 8 is horizontally arranged on the surface of the upper flange of the I-shaped beam 2, the lower surface of the concrete plate 8 is fixedly connected with the upper flange of the I-shaped beam 2, and the end part of the concrete plate 8 is tightly contacted with the flange of the I-shaped column 1 and the outer surface of the web plate; the plurality of shear connectors 5 are uniformly arranged between the I-shaped beam 2 and the concrete slab 8, the upper ends of the shear connectors 5 extend into the concrete slab 8, and the lower ends of the shear connectors are fixedly connected with the upper flange of the I-shaped beam 2; preferably, the shear connectors 5 are evenly distributed in two rows along the horizontal axis of the i-beam 2.
The concrete slab 8 comprises a concrete casting body 3 and a plate body reinforcement cage 4, and the plate body reinforcement cage 4 is formed by uniformly binding a plurality of longitudinal reinforcements and a plurality of transverse reinforcements; the concrete casting 3 is wrapped on the outer side of the plate body reinforcement cage 4, and the concrete casting 3 is formed by cast-in-place construction.
Construction method
In a factory, I-shaped beams 2 and I-shaped columns 1 are prefabricated, and bolt holes are formed; wherein, the shear connector 5 on the I-shaped beam 2 is prefabricated in a factory and assembled in place; then, transporting the beam to a construction site, and connecting the I-shaped beam 2 with the I-shaped column 1 through the four node connecting piece groups and the high-strength bolts 7; finally, concrete slabs 8 are bound with the plate reinforcement cage 4 on site and the concrete casting 3 is constructed.
In the fabricated beam column strong shaft connecting joint, the flange in the strong shaft direction of the I-shaped column 1 is connected with the beam end of the I-shaped beam 2; double rows of shear connectors 5 are arranged on the upper flange of the I-shaped beam 2, and holes are pre-formed in the upper flange, the lower flange and the web plate of the I-shaped beam 2 to facilitate connection of a node connector 6 and a high-strength bolt 7; the concrete slab 8 is cast in situ and is connected with the I-shaped beam 2 and the I-shaped column 1; the node connecting piece 6 is formed by welding a first steel plate 9, a second steel plate 10 and a third steel plate 11, the three-dimensional sizes of the three steel plates are mutually independent, and holes are formed in advance to facilitate connection of the high-strength bolts 7.
In the embodiment, the node connecting pieces 6 are arranged in pairs, and the first pair of node connecting pieces are arranged between the inner side of the upper flange of the I-shaped beam 2 and the corresponding web plate; a third steel plate 11 in the first pair of node connecting pieces is connected with the flange of the I-shaped column 1, a first steel plate 9 in the first pair of node connecting pieces is connected with the web plate of the I-shaped beam 2, and a second steel plate 10 in the first pair of node connecting pieces is connected with the inner side of the upper flange of the I-shaped beam 2; the second pair of joint connecting pieces are arranged between the inner side of the lower flange of the I-shaped beam 2 and the web plate, the third steel plate 11 of the second pair of joint connecting pieces is connected with the flange of the I-shaped column 1, the first steel plate 9 of the second pair of joint connecting pieces is connected with the web plate of the I-shaped beam 2, and the second steel plate 10 of the second pair of joint connecting pieces is connected with the inner side of the lower flange of the I-shaped beam 2.
The invention relates to an assembled beam-column strong-axis connecting node and a construction method thereof.A beam end of an I-shaped beam is in close contact with the outer side of a flange of the I-shaped column in the direction of a strong axis, and a node connecting piece is arranged between the I-shaped beam and the I-shaped column; the node connecting pieces are symmetrically arranged in pairs and fixedly connected with the I-shaped beam and the I-shaped column through high-strength bolts, and semi-rigid bolt connecting nodes are formed at beam column strong shaft connecting nodes; the deformation and stress performance of the semi-rigid bolt joint connection is between complete rigidity and ideal hinge joint, so that the high bearing capacity of the rigid joint also has the rotation capacity of the hinge joint, and the semi-rigid bolt joint has certain rotation capacity under the action of external force, dissipates energy through deformation, and has good ductility and bearing capacity; the invention can be applied to a standardized assembly type steel frame combined structure, has simple structure, convenient construction and application, stronger deformability, definite stress, strong bearing capacity and stronger energy consumption capacity.
The above-described embodiment is only one of the embodiments that can implement the technical solution of the present invention, and the scope of the present invention is not limited by the embodiment, but includes any variations, substitutions and other embodiments that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed.
Claims (9)
1. The strong shaft connecting joint of the assembled beam column is characterized by comprising an I-shaped column (1), an I-shaped beam (2), two joint connecting piece sets and a concrete slab (8); the I-shaped beam (2) is horizontally arranged on one side or two sides of the I-shaped column (1), and the beam end of the I-shaped beam (2) is tightly contacted with the outer side of the flange of the I-shaped column (1) in the direction of the strong axis;
the two node connecting piece groups are arranged at the nodes of the I-shaped beam (2) and the I-shaped column (1) and are symmetrically distributed on two sides of a web plate of the I-shaped beam (2); each node connecting piece group comprises two node connecting pieces (6), and the two node connecting pieces (6) are positioned on the same side of a web plate of the I-shaped beam (2) and are arranged up and down symmetrically along the horizontal axis of the I-shaped beam (2); the node connecting piece (6) is fixedly connected with the I-shaped beam (2) and the I-shaped column (1) by high-strength bolts (7);
the concrete slab (8) is horizontally arranged on the surface of the upper flange of the I-shaped beam (2), the lower surface of the concrete slab (8) is fixedly connected with the upper flange of the I-shaped beam (2), and the end part of the concrete slab (8) is tightly contacted with the flange of the I-shaped column (1) and the outer surface of the web plate.
2. The fabricated beam-column strong shaft connecting joint as claimed in claim 1, wherein the joint connecting piece (6) comprises a first steel plate (9), a second steel plate (10) and a third steel plate (11); the first steel plate (9) is vertically arranged, the second steel plate (10) is horizontally arranged, and the first steel plate (9) and the second steel plate (10) are vertically fixed to form an L-shaped connecting structure; the third steel plate (11) is vertically arranged at the end part of the L-shaped structure and is close to one end of the I-shaped column (1);
the first steel plate (9) is fixedly connected with a web plate of the I-shaped beam (2) through a high-strength bolt (7); the second steel plate (10) is fixedly connected with the upper flange or the lower flange of the I-shaped beam (2) through a high-strength bolt (7); the third steel plate (11) is fixedly connected with a flange in the direction of a strong axis of the I-shaped column (1) through a high-strength bolt (7).
3. The fabricated beam-column strong shaft connecting joint as claimed in claim 2, wherein the first steel plate (9) and the second steel plate (10) are welded and fixed or integrally formed; the third steel plate (11) and the first steel plate (9) or the second steel plate (10) are fixed by welding or are in an integrated forming structure.
4. The assembled beam-column strong shaft connecting joint according to claim 2, wherein the first steel plate (9), the second steel plate (10) and the third steel plate (11) in the same joint connecting piece (6) are independent in size; wherein the minimum dimension of the first steel plate (9), the second steel plate (10) and the third steel plate (11) is zero, and the minimum dimension of at most one of the first steel plate (9), the second steel plate (10) and the third steel plate (11) is zero.
5. The fabricated beam-column strong-shaft connecting joint as claimed in claim 4, wherein the dimensions of the first steel plate (9), the second steel plate (10) and the third steel plate (11) comprise the long side dimension, the short side dimension or the thickness of the steel plates.
6. The fabricated beam-column strong shaft connection node as claimed in claim 1, wherein a plurality of shear connectors (5) are arranged between the concrete slab (8) and the I-shaped beam (2), the upper ends of the shear connectors (5) extend into the concrete slab (8), and the lower ends are fixedly connected with the upper flange of the I-shaped beam (2).
7. An assembled beam-column strong-shaft connecting joint as claimed in claim 6, wherein the shear connectors (5) are distributed uniformly in two rows along the horizontal axis of the I-shaped beam (2).
8. The fabricated beam-column strong-shaft connecting joint as claimed in claim 1, wherein the concrete slab (8) comprises a concrete casting (3) and a plate reinforcement cage (4); the plate body reinforcement cage (4) is formed by uniformly binding a plurality of longitudinal reinforcements and a plurality of transverse reinforcements, and the concrete casting body (3) is wrapped on the outer side of the plate body reinforcement cage (4).
9. The construction method of the assembled beam-column strong-shaft connecting joint according to any one of claims 1 to 8, characterized by comprising the following steps:
processing and manufacturing an I-shaped beam (2), an I-shaped column (1) and a node connecting piece (6) according to design requirements;
installing an I-shaped column (1), and hoisting an I-shaped beam (2) to a preset installation position; fixedly connecting the joint connecting piece (6) with the I-shaped beam (2) and the I-shaped column (1) by using a high-strength bolt (7) so as to fixedly connect the I-shaped beam (2) and the I-shaped column (1) together;
and (3) casting a concrete slab on the surface of the upper flange of the I-shaped beam (2) in situ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111453028.7A CN114016608A (en) | 2021-11-30 | 2021-11-30 | Assembly type beam-column strong shaft connecting joint and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111453028.7A CN114016608A (en) | 2021-11-30 | 2021-11-30 | Assembly type beam-column strong shaft connecting joint and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114016608A true CN114016608A (en) | 2022-02-08 |
Family
ID=80067510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111453028.7A Pending CN114016608A (en) | 2021-11-30 | 2021-11-30 | Assembly type beam-column strong shaft connecting joint and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114016608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687564A (en) * | 2022-04-03 | 2022-07-01 | 上海泰大建筑科技有限公司 | Connecting joint of upright post and horizontal component and construction method thereof |
-
2021
- 2021-11-30 CN CN202111453028.7A patent/CN114016608A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687564A (en) * | 2022-04-03 | 2022-07-01 | 上海泰大建筑科技有限公司 | Connecting joint of upright post and horizontal component and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107386462B (en) | Unilateral buckling restrained steel beam and column connecting node and steel structure building | |
| CN108532760B (en) | Semi-through combined column-through double steel beam connection structure and construction method thereof | |
| CN112324178B (en) | Nondestructive steel beam reinforced concrete frame and construction method thereof | |
| AU2020101349A4 (en) | Assembled structural connector | |
| CN209874053U (en) | Fast-assembly type H-shaped steel concrete beam column connecting node | |
| CN114016608A (en) | Assembly type beam-column strong shaft connecting joint and construction method thereof | |
| CN215166489U (en) | Prefabricated column and prefabricated beam connected assembled node structure | |
| CN102493553A (en) | Member for connection node of reinforced beam and steel beam and construction method thereof | |
| CN211690817U (en) | Beam column connecting piece and beam column frame | |
| CN211621953U (en) | Prefabricated beam column connected node structure | |
| WO2010064743A1 (en) | Steel plate structure and construction method of joint structure of wall and slab using the same | |
| CN216428561U (en) | Assembled beam column strong shaft connecting node | |
| KR101454888B1 (en) | Circle steel girder having horizontal support and girder bridge | |
| CN112922146B (en) | Arc-shaped support combined node and construction method | |
| CN215104723U (en) | Steel-concrete combined beam bridge structure | |
| CN216428562U (en) | Assembled beam column weak axis connected node | |
| CN209941897U (en) | Quick-assembly type T-shaped steel concrete beam column connecting node | |
| CN210508035U (en) | Assembly type combination beam secondary beam structure | |
| CN209874051U (en) | Novel semi-rigid beam column connected node of assembled steel construction | |
| CN113969616A (en) | Assembled beam column weak axis connecting joint and construction method thereof | |
| CN113802741A (en) | Pin shear connection assembly type beam-slab combination system based on orthogonal corrugated steel plate bending-resistant tie-bar composite floor slab | |
| CN111910780A (en) | Assembled beam column connected node | |
| CN211597057U (en) | Node structure for connecting prefabricated beam column | |
| CN112302210A (en) | Assembled built-in corrugated steel plate reinforced concrete cross-section member and construction process | |
| CN111733698A (en) | Connecting structure of steel-concrete combined continuous beam and cover beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |