CN112443041A - Assembled bolted connection beam column node - Google Patents
Assembled bolted connection beam column node Download PDFInfo
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- CN112443041A CN112443041A CN202011403607.6A CN202011403607A CN112443041A CN 112443041 A CN112443041 A CN 112443041A CN 202011403607 A CN202011403607 A CN 202011403607A CN 112443041 A CN112443041 A CN 112443041A
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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
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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Abstract
The invention relates to an assembled bolt connection beam column joint, which comprises a precast concrete column and a precast concrete beam, wherein the precast concrete column and the precast concrete beam are connected by a welded connecting piece of a steel bar net rack, the connecting side of the precast concrete column and the precast concrete beam is oppositely provided with two brackets along the up-down direction, the brackets are connected with the precast concrete beam column through steel bars, the precast concrete column is provided with a high-strength bolt hole, an I-shaped connecting piece is arranged between the two brackets, and an I-shaped connecting piece web plate is provided with an I-shaped connecting piece web plate reserved screw hole; the connecting piece can effectively complete the force transmission of the connecting part of the assembled beam column, the bearing capacity is high, and the structural integrity is further enhanced; the dry connection is realized by the connection mode, the construction pollution caused by the wet connection is avoided, and the transportation process is not easy to damage.
Description
Technical Field
The invention belongs to the technical field of assembly type buildings, and particularly relates to an assembly type bolted beam-column joint.
Background
The fabricated concrete building is a concrete structure type house building which is designed and built in a field assembly mode by mainly taking a reinforced concrete prefabricated part produced in a factory. Compared with the construction of a cast-in-place concrete structure, the prefabricated concrete structure is a green construction process, can reduce environmental pollution, protect the existing environment, can save resources and energy such as water, electricity and the like, and better meets the requirements of green construction on various resources, energy, materials and environmental protection.
In the development process of the fabricated concrete building, the damage to the building caused by the earthquake is manually uncontrollable. In the event of an earthquake, the more severely damaged building is typically caused by damage to the core of the column at one end or joint, where the damage at the joint can cause the entire building to break or even collapse. When the Etzmidt in the northwest region of Turkey in 1999 encounters a huge earthquake, the damage of the beam-column edge node of the building finally causes the collapse damage of all buildings; also in 1999, taiwan gathered earthquake, also caused the building to partially collapse due to the damage caused by too few stirrups in the core area of the node; in 2008, when Wenchuan large-scale earthquake disasters happen temporarily, the damage of the building is also the integral inclination and collapse of the building caused by the damage of the bottom building nodes.
A series of earthquake disaster investigation researches discover that the damage of the joint of the building structure is the most important reason for causing the overall damage of the building, and the joint of the member joint is also a weak place of the assembled frame structure and is a key link for hindering the development of the assembled structure, so that a series of researches on the joint of the assembled structure are particularly important, wherein the connection problem of the core area of the beam-column connected joint is the key point for determining whether the overall building is safe and firm.
The fabricated building nodes generally adopt two connection modes of wet connection and dry connection. The wet connection is that concrete is poured on the beam-column joint firstly, and then the integral structure is poured after the concrete is poured, for example, grout anchor connection, common post-pouring integral connection, common cast-in-place connection, grouting assembly and other connection modes are carried out. The dry connect types are inherently so many, such as a sleeve connection, a pre-stressed crimp, a bracket connection, a welded connection, and a bolted connection. The dry connection has the advantages of convenient construction and the same effect as a cast-in-place structure.
The dry connection research problem is from 1993, a welding connection method is selected firstly, and researches show that the welding node is highly consistent with a cast-in-place node in terms of energy consumption, rigidity and strength. Research of Turkish scientists in 2006 finds that bolt connection is similar to a cast-in-place node in energy consumption, rigidity strength and seismic performance, and construction is more convenient.
In the fabricated concrete frame structure, the beam-column joints connect the prefabricated beams and columns into a whole, so that the load transfer and earthquake-resistant energy consumption functions are achieved. At present, the assembled frame structure beam column in China mainly adopts an integrally cast-in-place wet operation connecting method, and the connecting method has some problems and limitations and the quality is difficult to ensure. At present, the fabricated concrete building mostly adopts the concept of 'cast-in-place equivalent', and is also called as a fabricated integral concrete structure. In the fabricated frame structure, a construction mode of prefabricating nodes for beams and columns in a cast-in-place mode is generally adopted. Because the beam-column joint needs to be cast in place in a construction site, the frame structure system can not form a whole before concrete is cast behind the joint area to reach the strength, the joint has no strength, the structure has no rigidity, and support systems such as scaffolds are still needed, so that the construction cost is not effectively reduced, and the construction site is still very messy. Therefore, a dry type connection mode which is green and environment-friendly, can meet the strength requirement in a short time and has low cost is urgently needed in the construction of the fabricated concrete member, the transmission of beam column node force can be effectively ensured, and the action effect is equivalent to that of a cast-in-place structure.
Disclosure of Invention
In order to solve the technical problems, the invention provides an assembly type bolted beam-column joint, which is mainly used for developing a beam-column joint form which has the advantages of good integrity, definite force transmission, simple structure, safety, reliability, material saving and convenient construction, and can effectively solve the problems of construction pollution, high cost and the like.
The technical scheme adopted by the invention is as follows:
an assembled bolt connection beam column node comprises a precast concrete column and a precast concrete beam, wherein the precast concrete column is in seam connection with the precast concrete beam through a steel bar net rack welding connecting piece, the connecting piece comprises an I-shaped connecting piece and a U-shaped connecting piece, two brackets are oppositely arranged on the connecting side of the precast concrete column and the precast concrete beam along the up-down direction, the brackets are connected with the precast concrete column through steel bars, the precast concrete column is provided with a high-strength bolt hole, an I-shaped connecting piece is arranged between the two brackets, the I-shaped connecting piece comprises an I-shaped connecting piece upper flange, an I-shaped connecting piece lower flange and an I-shaped connecting piece web plate, the I-shaped connecting piece upper flange and the I-shaped connecting piece lower flange are respectively provided with an I-shaped connecting piece flange reserved screw hole, and the I-shaped connecting piece web plate reserved, two rows of I-shaped connecting piece flange reserved screw holes are formed in the positions of the upper flange of the I-shaped connecting piece and the lower flange of the I-shaped connecting piece at the plate separating ends 1/3 and 2/3, the two rows of I-shaped connecting piece flange reserved screw holes are arranged in a staggered mode, the I-shaped connecting piece flange reserved screw holes are symmetrical relative to an I-shaped connecting piece web plate, the I-shaped connecting piece web plate is located in the central line position of the upper flange of the I-shaped connecting piece and the lower flange of the I-shaped connecting piece and is perpendicular to the upper flange of, a plurality of reserved screw holes of the web plate of the I-shaped connecting piece are arranged on the web plate of the I-shaped connecting piece, the reserved screw holes of the web plate of the I-shaped connecting piece are arranged in rows transversely and longitudinally, the I-shaped connecting piece extends into the precast concrete column, the I-shaped connecting piece flange reserved screw hole corresponds to a reserved high-strength bolt hole of the precast concrete column; the prefabricated concrete beam is internally provided with a prefabricated concrete beam stirrup and prefabricated concrete beam longitudinal steel bars with upper and lower parts parallel and opposite, wherein the prefabricated concrete beam longitudinal steel bars extend to the end part of the prefabricated concrete beam, the prefabricated concrete beam stirrup is arranged outside a middle gap of the end part of the prefabricated concrete beam along the length direction of the beam, the connecting end part of the prefabricated concrete beam is provided with two U-shaped connecting pieces, each U-shaped connecting piece comprises a U-shaped connecting piece upper flange, a U-shaped connecting piece lower flange and a U-shaped connecting piece web, U-shaped connecting piece flange reserved screw holes are respectively arranged on the U-shaped connecting piece upper flange and the U-shaped connecting piece lower flange, U-shaped connecting piece web reserved screw holes are arranged on the U-shaped connecting piece web, two rows of U-shaped connecting piece flange reserved screw holes are arranged at the positions of the plate-separating ends 1/3 and 2/3 of the U-, the web plate of the U-shaped connecting piece is positioned at the end parts of the upper flange of the U-shaped connecting piece and the lower flange of the U-shaped connecting plate and is arranged perpendicular to the upper flange of the U-shaped connecting piece and the lower flange of the U-shaped connecting plate, the method comprises the following steps that a plurality of U-shaped connecting piece web reserved screw holes are formed in a U-shaped connecting piece web, the U-shaped connecting piece web reserved screw holes are arranged in a row horizontally and longitudinally, the positions of the U-shaped connecting piece web reserved screw holes in an upper flange of the U-shaped connecting piece and a lower flange of the U-shaped connecting piece correspond to the positions of I-shaped connecting piece web reserved screw holes in an upper flange of the I-shaped connecting piece and a lower flange of the I-shaped connecting piece, the positions of the I-shaped connecting piece web reserved screw holes in the I-shaped connecting piece web correspond to the positions of the U-shaped connecting piece web reserved screw holes in the U-shaped connecting piece, the U-shaped connecting piece is welded with an upper flange of the U; the upper flange of the U-shaped connecting piece, the lower flange of the U-shaped connecting plate, the upper flange of the I-shaped connecting piece and the lower flange of the I-shaped connecting piece are connected through high-strength pressure-bearing bolts, the high-strength pressure-bearing bolts sequentially penetrate through the reserved high-strength bolt holes of the precast concrete columns, the reserved screw holes of the flanges of the I-shaped connecting piece and the reserved screw holes of the flanges of the U-shaped connecting piece, and the web plate of the U-shaped connecting piece and the web plate of the I-shaped connecting piece are connected through shear bolts, and the shear bolts sequentially penetrate through the reserved screw holes.
Furthermore, the bracket is connected with the precast concrete beam through the reinforcing steel bars, HRB 500-level longitudinal reinforcing steel bars and transverse reinforcing steel bars are arranged along the top of the bracket, all longitudinal reinforcing steel bars and bent reinforcing steel bars are cut off after extending 150mm in the column along the outer edge of the bracket, horizontal stirrups are arranged in the bracket, the longitudinal reinforcing steel bars and the transverse reinforcing steel bars form a bracket built-in reinforcing steel bar net, and an I-shaped connecting piece is welded with an upper flange and a lower flange and is welded with the reinforcing steel bar nets built in the upper bracket and the lower bracket through single-side grooves.
Furthermore, a gap is reserved between the two U-shaped connecting piece webs, the width of the gap is the sum of the width of the I-shaped connecting piece web and the thickness of the protective layer, a gap is arranged in the middle of the connecting end part of the precast concrete beam, and the width of the gap is the width of the I-shaped connecting piece web.
Furthermore, the width of the upper flange of the I-shaped connecting piece and the width of the lower flange of the I-shaped connecting piece are the width of the bracket, the length of the upper flange of the I-shaped connecting piece is larger than that of the bracket, and the height of the web plate of the I-shaped connecting piece is larger than that between the upper bracket and the lower bracket;
furthermore, the width of the upper flange of the U-shaped connecting piece and the width of the lower flange of the U-shaped connecting piece are 2/3 of the distance from the middle gap of the end part of the precast concrete beam to the two side edges, the length of the upper flange of the U-shaped connecting piece and the width of the lower flange of the U-shaped connecting piece are greater than the length of the middle gap of the end part of,
furthermore, the height of the web plate of the U-shaped connecting piece is the height between the upper flange of the I-shaped connecting piece and the lower flange of the I-shaped connecting piece.
The invention has the advantages and beneficial effects that:
the invention has the advantages that the time required by the site construction of the construction site is greatly shortened, the construction speed can be greatly improved, the construction is convenient, the cost is saved, and the economic effect is good; the connecting piece can effectively complete the force transmission of the connecting part of the assembled beam column, the bearing capacity is high, and the structural integrity is further enhanced; the dry connection is realized in the connection mode, so that the construction pollution caused by the wet connection is avoided; and all processes are finished in a factory building, so that the transportation is convenient, and the damage is not easy to occur in the transportation process.
Drawings
FIG. 1 is a schematic view of the assembled beam and column component installation of the present invention.
FIG. 2 is a schematic view of the precast concrete column of FIG. 1;
FIG. 3 is a front view of the bracket reinforcement of the precast concrete column of FIG. 2;
FIG. 4 is a schematic view of reinforcing bars of the precast concrete beam of FIG. 1;
FIG. 5 is a schematic view of the I-shaped connector of FIG. 1;
FIG. 6 is a schematic view of a single U-shaped connector of FIG. 1;
FIG. 7 is a schematic view of the connection between the I-shaped connecting member and the U-shaped connecting member;
FIG. 8 is a schematic view of a fabricated beam-column component bolted connection;
FIG. 9 is a side view of the assembled beam and column member of FIG. 8 being bolted together;
FIG. 10 is a front elevational view of the assembled beam-column component of FIG. 8 as bolted thereto.
In the figure, 1 is a precast concrete column; 2, a precast concrete beam; 3 is an I-shaped connecting piece; 4 is a U-shaped connecting piece; 5 is a high-strength pressure-bearing bolt; 6, the shear bolts 1-1 are brackets; 1-2 reserving a high-strength bolt hole for the precast concrete column; 1-3 is a reinforcing mesh arranged in the bracket; 2-1 is a longitudinal steel bar of the precast concrete beam; 2-2 is a precast concrete beam stirrup; 3-1 is an upper flange of the I-shaped connecting piece; 3-2 is the lower flange of the I-shaped connecting piece; 3-3 is an I-shaped connecting piece web plate; 3-4, reserving a screw hole for the flange of the I-shaped connecting piece; 3-5, reserving screw holes for webs of the I-shaped connecting pieces; 4-1 is the upper flange of the U-shaped connecting piece; 4-2 is a lower flange of the U-shaped connecting piece; 4-3 is a U-shaped connecting piece web plate; 4-4, reserving screw holes for flanges of the U-shaped connecting piece; 4-5 screw holes are reserved for the web plate of the U-shaped connecting piece.
Detailed Description
The invention is described in detail below with reference to the following figures and examples:
an assembled bolt connection beam column node comprises a precast concrete column 1 and a precast concrete beam 2, the precast concrete column 1 and the precast concrete beam 2 are connected through a steel bar net rack welding connector in a seam mode, the connector comprises an I-shaped connector 3 and a U-shaped connector 4, two brackets 1-1 are oppositely arranged on the connecting side of the precast concrete column 1 and the precast concrete beam 2 along the up-down direction, the brackets 1-1 are connected with the precast concrete column 1 through steel bars, a precast concrete column reserved high-strength bolt hole 1-2 is formed in the bracket 1-1, an I-shaped connector 3 is arranged between the two brackets 1-1, the I-shaped connector 3 comprises an I-shaped connector upper flange 3-1, an I-shaped connector lower flange 3-2 and an I-shaped connector web 3-3, and the I-shaped connector upper flange 3-1 and the I-shaped connector lower flange 3-2 are respectively provided with an I-shaped connector upper flange 3-1 and an The flange of the I-shaped connecting piece is provided with 3-4 screw holes, the web 3-3 of the I-shaped connecting piece is provided with 3-5 screw holes for web reservation of the I-shaped connecting piece, the upper flange 3-1 of the I-shaped connecting piece and the lower flange 3-2 of the I-shaped connecting piece are provided with 3-4 screw holes for flange reservation of the I-shaped connecting piece at the positions of 1/3 and 2/3 from the plate end, the 3-4 screw holes for flange reservation of the I-shaped connecting piece are arranged in a staggered manner, the 3-4 screw holes for flange reservation of the I-shaped connecting piece are symmetrical relative to the web 3-3 of the I-shaped connecting piece, the web 3-3 of the I-shaped connecting piece is positioned at the central line position of the upper flange 3-1 of the I-shaped connecting piece and, the method comprises the following steps that a plurality of I-shaped connecting piece web reserved screw holes 3-5 are formed in I-shaped connecting piece webs 3-3, the I-shaped connecting piece web reserved screw holes 3-5 are arranged in rows transversely and longitudinally, the I-shaped connecting piece 3 extends into a precast concrete column 1 and is welded on upper and lower corbel built-in reinforcing steel meshes 1-3 through single-face groove welding lines, and the positions of the I-shaped connecting piece flange reserved screw holes 3-4 correspond to reserved high-strength bolt holes 1-2 of the precast concrete column; the prefabricated concrete beam 2 is internally provided with a prefabricated concrete beam stirrup 2-2 and prefabricated concrete beam longitudinal steel bars 2-1 with the upper part and the lower part parallel and opposite to each other, wherein the prefabricated concrete beam longitudinal steel bars 2-1 extend to the end part of the prefabricated concrete beam 2, the prefabricated concrete beam stirrup 2-2 is arranged outside a middle gap at the end part of the prefabricated concrete beam 2 along the length direction of the beam, the connecting end part of the prefabricated concrete beam 2 is provided with two U-shaped connecting pieces 4, each U-shaped connecting piece 4 comprises a U-shaped connecting piece upper flange 4-1, a U-shaped connecting piece lower flange 4-2 and a U-shaped connecting piece web 4-3, the U-shaped connecting piece upper flange 4-1 and the U-shaped connecting piece lower flange 4-2 are respectively provided with a U-shaped connecting piece flange reserved screw hole 4-4, and the U-shaped connecting piece web 4-3, two rows of U-shaped connecting piece flange reserved screw holes 4-4 are formed in the positions, away from the plate ends 1/3 and 2/3, of an upper flange 4-1 and a lower flange 4-2 of the U-shaped connecting piece, the two rows of U-shaped connecting piece flange reserved screw holes 4-4 are arranged in a staggered mode, a web plate 4-3 of the U-shaped connecting piece is located at the end portion of the upper flange 4-1 and the lower flange 4-2 of the U-shaped connecting piece and is perpendicular to the upper flange 4-1 and the lower flange 4-2 of the U-shaped connecting piece, a plurality of U-shaped connecting piece web reserved screw holes 4-5 are formed in the web plate 4-3 of the U-shaped connecting piece, the U-shaped connecting piece web reserved screw holes 4-5 are arranged in a transverse and longitudinal row, the U-shaped connecting piece flange reserved screw holes 4-4 in the upper flange 4-1 and the lower flange 4-2 of the U- The positions of reserved screw holes 3-4 of flanges of I-shaped connecting pieces on the lower flanges 3-2 of the connecting pieces correspond to the positions of reserved screw holes 3-5 of webs of I-shaped connecting pieces on the webs 3-3 of the I-shaped connecting pieces and reserved screw holes 4-5 of webs of U-shaped connecting pieces on the webs 4-3 of the U-shaped connecting pieces, the upper flanges 4-1 of the U-shaped connecting pieces welded on the U-shaped connecting pieces are welded with longitudinal steel bars 2-1 of prefabricated concrete beams on the upper portions through single-groove welding seams, and the lower flanges 4-2 of the U-shaped connecting pieces welded on the lower portions are welded with longitudinal; the upper flange 4-1 of the U-shaped connecting piece, the lower flange 4-2 of the U-shaped connecting piece, the upper flange 3-1 of the I-shaped connecting piece and the lower flange 3-2 of the I-shaped connecting piece are connected through a high-strength pressure-bearing bolt 5, the high-strength pressure-bearing bolt 5 sequentially penetrates through a reserved high-strength bolt hole 1-2 of the precast concrete column, a reserved bolt hole 3-4 of the flange of the I-shaped connecting piece and a reserved bolt hole 4-4 of the flange of the U-shaped connecting piece, a web plate 4-3 of the U-shaped connecting piece and a web plate 3-3 of the I-shaped connecting piece are connected through a shear bolt 6, and the shear bolt 6 sequentially penetrates through the reserved bolt hole 4-5 of the web plate.
Example (b): as shown in figures 1-10, the invention comprises a precast concrete column 1 and a precast concrete beam 2 which are connected with each other, the precast concrete column 1 and the precast concrete beam 2 are connected by a welding connector of a reinforcing steel bar net rack, the connector comprises an I-shaped connector 3 and a U-shaped connector 4, two brackets 1-1 are oppositely arranged on the connecting side of the precast concrete column 1 and the precast concrete beam 2 along the vertical direction, the I-shaped connector 3 is welded on the reinforcing steel meshes 1-3 arranged in the upper bracket and the lower bracket through a single-face groove welding seam, holes 1-2 of high-strength bolts are reserved in the precast concrete column at the positions of the bracket 1-1 corresponding to the flange reserved screw holes 3-4 of the I-shaped connector on the I-shaped connector 3, holes 1-2 of the high-strength bolts are reserved in the precast concrete column corresponding to the precast concrete column 2 overhanging the precast concrete beam 1-2 on the connecting side of the precast concrete (ii) a The two U-shaped connecting pieces 4 are welded on the longitudinal steel bars 2-1 of the precast concrete beam above and below the precast concrete beam 2 through single-face groove weld joints, a gap is reserved between the webs 4-3 of the two U-shaped connecting pieces, the width of the gap is the sum of the width of the web 3-3 of the I-shaped connecting piece and the thickness of the protective layer, a gap is arranged in the middle of the connecting end part of the precast concrete beam 2, and the width of the gap is the width of the web 3-3 of the I-shaped connecting piece.
As shown in fig. 3, the corbel 1-1 and the precast concrete beam 1 are connected through reinforcing steel bars, HRB 500-grade longitudinal reinforcing steel bars and transverse reinforcing steel bars are arranged along the top of the corbel, all the longitudinal reinforcing steel bars and the bent reinforcing steel bars are cut off after extending 150mm along the outer edge of the corbel, horizontal stirrups are arranged inside the corbel 1-1, the longitudinal reinforcing steel bars and the transverse reinforcing steel bars form a corbel built-in reinforcing mesh 1-3, an upper flange 3-1 of the i-shaped connecting piece and a lower flange 3-2 of the i-shaped connecting piece are connected with the upper and lower corbel built-in reinforcing meshes 1-3 through single-side groove welding seams, and all the processes are completed in.
As shown in fig. 4, a precast concrete beam stirrup 2-2 and parallel and opposite precast concrete beam longitudinal reinforcements 2-1 are arranged inside the precast concrete beam 2, wherein the precast concrete beam longitudinal reinforcement 2-1 extends to the end of the precast concrete beam 2, the precast concrete beam stirrup 2-2 is arranged between the middle gaps at the two ends of the precast concrete beam 2, a U-shaped connecting piece 4 is welded on an upper flange 4-1 of the U-shaped connecting piece and is welded with the precast concrete beam longitudinal reinforcement 2-1 at the upper part through a single-groove weld joint, a lower flange 4-2 of the U-shaped connecting piece is welded with the precast concrete beam longitudinal reinforcement 2-1 at the lower part, and all the working procedures are completed in a factory.
As shown in figure 5, the I-shaped connecting piece 3 is divided into three areas, namely a welding I-shaped connecting piece upper flange 3-1, a welding I-shaped connecting piece lower flange 3-2 and an I-shaped connecting piece web 3-3, wherein two rows of I-shaped connecting piece flange reserved screw holes 3-4 are formed in the positions, away from a plate end 1/3 and a plate end 2/3, of the I-shaped upper flange 3-1 and the I-shaped lower flange 3-2, the two rows of I-shaped connecting piece flange reserved screw holes 3-4 are arranged in a staggered mode and are not lower than the standard requirement from the flange edge, the I-shaped connecting piece flange reserved screw holes 3-4 on the flanges on the two sides of the I-shaped connecting piece web 3-3 are symmetrical relative to the I-shaped connecting piece web 3-3, the I-shaped connecting piece web 3-3 is located in the center line position of the I-shaped connecting piece upper flange 1. The lower flange 3-2 of the I-shaped connecting piece is vertically arranged, a plurality of I-shaped connecting piece web plate reserved screw holes 3-5 are formed in the web plate 3-3 of the I-shaped connecting piece, and the I-shaped connecting piece web plate reserved screw holes 3-5 are arranged in rows horizontally and longitudinally.
As shown in FIG. 6, the U-shaped connecting piece 4 is divided into three areas, namely a welding U-shaped connecting piece upper flange 4-1, a welding U-shaped connecting piece lower flange 4-2 and a U-shaped connecting piece web 4-3, wherein two rows of U-shaped connecting piece flange reserved screw holes 4-4 are arranged at positions separated from plate ends 1/3 and 2/3 of the U-shaped connecting piece upper flange 4-1 and the U-shaped connecting piece lower flange 4-2, the two rows of U-shaped connecting piece flange reserved screw holes 4-4 are arranged in a staggered mode, the distance from the positions to the flange edges is not lower than the standard requirement, the U-shaped connecting piece web 3-3 is positioned at the end parts of the U-shaped connecting piece upper flange 4-1 and the U-shaped connecting piece lower flange 4-2 and is arranged perpendicular to the U-shaped connecting piece upper flange 4-1 and the U-shaped connecting piece lower flange 4-2, and a plurality of U-shaped, the reserved screw holes 4-5 of the web plate of the U-shaped connecting piece are arranged in rows horizontally and longitudinally, and the positions of the upper flange 4-1 of the U-shaped connecting piece, the lower flange 4-2 of the U-shaped connecting piece and the reserved screw hole 4-4 of the web plate of the U-shaped connecting piece correspond to the positions of the flange screw holes 3-4 of the I-shaped connecting piece.
As shown in fig. 5 and 6, the width of the upper flange 3-1 and the lower flange 3-2 of the I-shaped connecting piece is equal to the width of the bracket 1-1, the length of the upper flange is greater than the length of the bracket 1-1, and the height of the web 3-3 of the I-shaped connecting piece is greater than the height between the upper bracket 1 and the lower bracket 1-1; the width of the upper flange 4-1 of the U-shaped connecting piece and the width of the lower flange 4-2 of the U-shaped connecting piece are 2/3 of the distance from the middle gap of the end part of the precast concrete beam 2 to the edges of the two sides, the length of the upper flange and the lower flange is larger than the length of the middle gap of the end part of the precast concrete beam 2, and the height of the web plate 4-3 of the U-shaped connecting piece is the height between the upper flange 3-1 of the I-shaped connecting piece and.
As shown in fig. 7-10, during on-site construction, the precast concrete column 1 and the precast concrete beam 2 are hoisted at specified positions, the precast concrete beam 2 is inserted into the precast concrete column 1, at the moment, a middle gap at the end part of the precast concrete beam 2 is in close contact with the i-shaped connecting piece 3, the upper flange 3-1 of the i-shaped connecting piece is connected with the upper flange 4-1 of the U-shaped connecting piece in the precast concrete beam 2 by adopting a high-strength pressure-bearing bolt 5, and the lower flange 3-2 of the i-shaped connecting piece is connected with the lower flange 4-2 of the U-shaped connecting piece; connecting an I-shaped connecting piece web 3-3 with a U-shaped connecting piece web 4-3 by using a shear bolt 6, wherein the length of the shear bolt 6 is the width of the precast concrete beam 2, and two ends of the bolt are fixed by nuts; after the high-strength pressure-bearing bolt 5 and the shear bolt 6 are fixed, plaster can be used for smoothing the anchoring part and filling the screw hole to prevent the nut from being rusted; when a beam end bears shearing force, the shearing force of the beam end is transmitted to an I-shaped connecting piece 3 through a shearing bolt 6 on a U-shaped connecting piece 4, an upper flange 3-1 of the I-shaped connecting piece and a lower flange 3-2 of the I-shaped connecting piece are welded with a corbel built-in reinforcing steel bar net 1-3, the height of a web plate 3-3 of the I-shaped connecting piece is larger than the distance between corbels 1-1, the friction force between the web plate 3-3 of the I-shaped connecting piece and concrete resists part of the shearing force, and the rest force is transmitted to the corbel built-in reinforcing steel bar net 1-3 and is transmitted to a column built-; when the beam column joint is cracked, the I-shaped connecting piece 3 and the U-shaped connecting piece 4 are connected, so that the tensile property of the joint is greatly improved, the upper bracket 1-1, the upper flange 3-1 of the I-shaped connecting piece and the high-strength bearing bolt 5 provide tensile force when the joint moves downwards, and the lower bracket 1-1, the lower flange 4-2 of the I-shaped connecting piece and the high-strength bearing bolt 5 provide tensile force when the joint moves downwards.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides an assembled bolted connection beam column node which characterized in that: the prefabricated concrete column comprises a prefabricated concrete column (1) and a prefabricated concrete beam (2), the prefabricated concrete column (1) and the prefabricated concrete beam (2) are connected in a joint mode through a steel bar net rack welding connecting piece, the connecting piece comprises an I-shaped connecting piece (3) and a U-shaped connecting piece (4), two brackets (1-1) are oppositely arranged on the connecting side of the prefabricated concrete column (1) and the prefabricated concrete beam (2) along the upper and lower directions, the brackets (1-1) are connected with the prefabricated concrete column (1) through steel bars, prefabricated concrete column reserved high-strength bolt holes (1-2) are formed in the brackets (1-1), an I-shaped connecting piece (3) is arranged between the two brackets (1-1), the I-shaped connecting piece (3) comprises an I-shaped connecting piece upper flange (3-1), an I-shaped connecting piece lower flange (3-2) and an I-shaped web (3-3), i-shaped connecting piece flange reserved screw holes (3-4) are respectively formed in an I-shaped connecting piece upper flange (3-1) and an I-shaped connecting piece lower flange (3-2), I-shaped connecting piece web plate reserved screw holes (3-5) are formed in an I-shaped connecting piece web plate (3-3), two rows of I-shaped connecting piece flange reserved screw holes (3-4) are formed in the position, away from a plate end 1/3 and a plate end 2/3, of the I-shaped connecting piece upper flange (3-1) and the I-shaped connecting piece lower flange (3-2), the two rows of I-shaped connecting piece flange reserved screw holes (3-4) are arranged in a staggered mode, the I-shaped connecting piece flange reserved screw holes (3-4) are symmetrical relative to the I-shaped connecting piece web plate (3-3), and the I-shaped connecting piece web plate (3-3, The center line of a lower flange (3-2) of the I-shaped connecting piece is arranged vertically to an upper flange (3-1) of the I-shaped connecting piece and a lower flange (3-2) of the I-shaped connecting piece, a plurality of reserved web screw holes (3-5) of the I-shaped connecting piece are formed in a web plate (3-3) of the I-shaped connecting piece, the reserved web screw holes (3-5) of the I-shaped connecting piece are arranged in rows transversely and longitudinally, the I-shaped connecting piece (3) extends into the precast concrete column (1) and is welded on the built-in reinforcing meshes (1-3) of the upper bracket and the lower bracket through a single-side groove welding seam, and the reserved flange screw holes (3-4) of the I-shaped connecting piece correspond to the reserved high-strength; the prefabricated concrete beam (2) is internally provided with a prefabricated concrete beam stirrup (2-2) and prefabricated concrete beam longitudinal reinforcements (2-1) with the upper part and the lower part parallel and opposite to each other, wherein the prefabricated concrete beam longitudinal reinforcements (2-1) extend to the end part of the prefabricated concrete beam (2), the prefabricated concrete beam stirrup (2-2) is arranged outside a middle gap of the end part of the prefabricated concrete beam (2) along the length direction of the beam, the connecting end part of the prefabricated concrete beam (2) is provided with two U-shaped connecting pieces (4), each U-shaped connecting piece (4) comprises a U-shaped connecting piece upper flange (4-1), a U-shaped connecting plate lower flange (4-2) and a U-shaped connecting piece web plate (4-3), and U-shaped connecting piece upper flanges (4-1) and U-shaped connecting piece lower flanges (4-2) are respectively provided with U-shaped connecting piece flange reserved screw holes (, u-shaped connecting piece web reserved screw holes (4-5) are formed in a U-shaped connecting piece web (4-3), two rows of U-shaped connecting piece flange reserved screw holes (4-4) are formed in the positions, away from the plate ends 1/3 and 2/3, of an upper flange (4-1) and a lower flange (4-2) of a U-shaped connecting piece, the two rows of U-shaped connecting piece flange reserved screw holes (4-4) are arranged in a staggered mode, the U-shaped connecting piece web (4-3) is located at the end portions of the upper flange (4-1) and the lower flange (4-2) of the U-shaped connecting piece and is perpendicular to the upper flange (4-1) and the lower flange (4-2) of the U-shaped connecting piece, a plurality of U-shaped web reserved screw holes (4-5) of the U-shaped connecting piece are formed in, the reserved screw holes (4-5) of the web plate of the U-shaped connecting piece are arranged in rows transversely and longitudinally, the reserved screw holes (4-4) of the flange of the U-shaped connecting piece on the upper flange (4-1) of the U-shaped connecting piece and the reserved screw holes (3-4) of the flange of the U-shaped connecting piece on the lower flange (4-2) of the U-shaped connecting piece correspond to the positions of the reserved screw holes (3-4) of the flange of the I-shaped connecting piece on the upper flange (3-1) of the I-shaped connecting piece and the lower flange (3-2) of the I-shaped connecting piece, the reserved screw holes (3-5) of the web plate of the I-shaped connecting piece on the web plate (3-3) of the I-shaped connecting piece correspond to the reserved screw holes (4-5) of the web plate of the U-shaped connecting piece, the lower flange (4-2) of the U-shaped connecting piece is welded with the longitudinal steel bar (2-1) of the precast concrete beam at the lower part; the upper flange (4-1) of the U-shaped connecting piece, the lower flange (4-2) of the U-shaped connecting piece, the upper flange (3-1) of the I-shaped connecting piece and the lower flange (3-2) of the I-shaped connecting piece are connected through a high-strength pressure-bearing bolt (5), the high-strength pressure-bearing bolt (5) successively passes through the reserved high-strength bolt hole (1-2) of the precast concrete column, the reserved screw hole (3-4) of the flange of the I-shaped connecting piece and the reserved screw hole (4-4) of the flange of the U-shaped connecting piece, the U-shaped connecting piece web plate (4-3) and the I-shaped connecting piece web plate (3-3) are connected through the shear bolts (6), and the shear bolts (6) sequentially penetrate through the U-shaped connecting piece web plate reserved screw hole (4-5), the I-shaped connecting piece web plate reserved screw hole (3-5) and the U-shaped connecting piece web plate reserved screw hole (4-5).
2. The fabricated bolted beam-column joint of claim 1, wherein: the bracket (1-1) is connected with the precast concrete beam (1) through reinforcing steel bars, HRB 500-level longitudinal steel bars and transverse steel bars are arranged along the top of the bracket (1-1), all longitudinal steel bars and bent reinforcing steel bars are cut off after extending 150mm in a column along the outer edge of the bracket (1-1), horizontal stirrups are arranged inside the bracket (1-1), the longitudinal steel bars and the transverse steel bars form a bracket built-in reinforcing mesh (1-3), and an I-shaped connecting piece is welded with an upper flange (3-1) and a lower flange (3-2) and is welded with the upper and lower bracket built-in reinforcing mesh (1-3) through a single-side groove.
3. The fabricated bolted beam-column joint of claim 1, wherein: a gap is reserved between the two U-shaped connecting piece webs (4-3), the width of the gap is the sum of the width of the I-shaped connecting piece web (3-3) and the thickness of the protective layer, a gap is reserved in the middle of the connecting end part of the precast concrete beam (2), and the width of the gap is the width of the I-shaped connecting piece web (3-3).
4. The fabricated bolted beam-column joint of claim 1, wherein: the width of the upper flange (3-1) and the width of the lower flange (3-2) of the I-shaped connecting piece are the width of the bracket (1-1), the length of the upper flange is larger than that of the bracket (1-1), and the height of the web plate (3-3) of the I-shaped connecting piece is larger than that between the upper bracket and the lower bracket (1-1).
5. The fabricated bolted beam-column joint of claim 1, wherein: the width of the upper flange (4-1) and the lower flange (4-2) of the U-shaped connecting piece is 2/3 of the distance from the middle gap of the end part of the precast concrete beam (2) to the edges of the two sides, and the length of the upper flange and the lower flange is greater than the length of the middle gap of the end part of the precast concrete beam (2).
6. The fabricated bolted beam-column joint of claim 1, wherein: the height of the web plate (4-3) of the U-shaped connecting piece is the height between the upper flange (3-1) and the lower flange (3-2) of the I-shaped connecting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403607.6A CN112443041A (en) | 2020-12-04 | 2020-12-04 | Assembled bolted connection beam column node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403607.6A CN112443041A (en) | 2020-12-04 | 2020-12-04 | Assembled bolted connection beam column node |
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| Publication Number | Publication Date |
|---|---|
| CN112443041A true CN112443041A (en) | 2021-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011403607.6A Pending CN112443041A (en) | 2020-12-04 | 2020-12-04 | Assembled bolted connection beam column node |
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| CN (1) | CN112443041A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282049A (en) * | 2020-11-17 | 2021-01-29 | 广州地铁设计研究院股份有限公司 | Reinforced concrete superposed primary and secondary beam connecting joint and construction method thereof |
| CN113529943A (en) * | 2021-07-21 | 2021-10-22 | 上海建工一建集团有限公司 | Concrete support and lattice column connecting device and method convenient to dismantle |
| CN113700139A (en) * | 2021-09-05 | 2021-11-26 | 中建八局第四建设有限公司 | Prefabricated assembled bolted connection constructional column ring beam and construction method |
| CN114319583A (en) * | 2021-12-20 | 2022-04-12 | 宁波市电力设计院有限公司 | Connecting structure of prefabricated frame beam and prefabricated frame column |
| CN115492240A (en) * | 2022-10-25 | 2022-12-20 | 哈尔滨工程大学 | TB-type semi-rigid assembly type node and assembly method thereof |
| CN116220277A (en) * | 2023-04-13 | 2023-06-06 | 河北工业大学 | Connection structure of steel tube bundle concrete hollow pre-arch gradient beam and construction process |
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2020
- 2020-12-04 CN CN202011403607.6A patent/CN112443041A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282049A (en) * | 2020-11-17 | 2021-01-29 | 广州地铁设计研究院股份有限公司 | Reinforced concrete superposed primary and secondary beam connecting joint and construction method thereof |
| CN113529943A (en) * | 2021-07-21 | 2021-10-22 | 上海建工一建集团有限公司 | Concrete support and lattice column connecting device and method convenient to dismantle |
| CN113700139A (en) * | 2021-09-05 | 2021-11-26 | 中建八局第四建设有限公司 | Prefabricated assembled bolted connection constructional column ring beam and construction method |
| CN114319583A (en) * | 2021-12-20 | 2022-04-12 | 宁波市电力设计院有限公司 | Connecting structure of prefabricated frame beam and prefabricated frame column |
| CN115492240A (en) * | 2022-10-25 | 2022-12-20 | 哈尔滨工程大学 | TB-type semi-rigid assembly type node and assembly method thereof |
| CN115492240B (en) * | 2022-10-25 | 2023-08-25 | 哈尔滨工程大学 | TB-type semi-rigid assembly type node and assembly method thereof |
| CN116220277A (en) * | 2023-04-13 | 2023-06-06 | 河北工业大学 | Connection structure of steel tube bundle concrete hollow pre-arch gradient beam and construction process |
| CN116220277B (en) * | 2023-04-13 | 2024-06-14 | 燕山大学 | Connection structure of steel tube bundle concrete hollow pre-arch gradient beam and construction process |
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