CN113513089A - FRP (fiber reinforced plastic) wrapped crossed steel reinforced concrete column-H-shaped steel beam connecting node and mounting method - Google Patents
FRP (fiber reinforced plastic) wrapped crossed steel reinforced concrete column-H-shaped steel beam connecting node and mounting method Download PDFInfo
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- CN113513089A CN113513089A CN202110947286.4A CN202110947286A CN113513089A CN 113513089 A CN113513089 A CN 113513089A CN 202110947286 A CN202110947286 A CN 202110947286A CN 113513089 A CN113513089 A CN 113513089A
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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
- E04B1/38—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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention relates to an FRP (fiber reinforced plastic) wrapped crossed steel reinforced concrete column-H-shaped steel beam connection node and an installation method, belonging to the field of beam column node design of building structures. Including crossing type steel reinforced concrete column of FRP outsourcing, H shaped steel roof beam and square node connecting sleeve, the crossing type steel reinforced concrete column of FRP outsourcing includes upper portion post and lower part post, and square node connecting sleeve is located between upper portion post and the lower part post, and upper portion post and lower part post are connected with square node connecting sleeve through column end opening connecting plate respectively, H shaped steel roof beam respectively with column end opening connecting plate and square node connecting sleeve fixed connection. The vertical force transmission design of the steel bars is adopted, the upper connection and the lower connection of the nodes are greatly enhanced, and the overall structural performance of the nodes is enhanced.
Description
Technical Field
The invention relates to an FRP (fiber reinforce Plastic) wrapped crossed steel reinforced concrete column-H-shaped steel beam connecting node designed for vertical force transmission of reinforcing steel bars and an installation method, belonging to the field of beam column node design of building structures.
Background
With the continuous development of urbanization, green buildings adopting new high-performance materials gradually become the development direction of the building industry. The Fiber Reinforced Plastic (FRP) is a high-performance novel material formed by mixing a fiber material and a matrix material (resin) according to a certain proportion, and has the advantages of light weight, high strength, corrosion resistance, good heat conductivity, good processability and the like.
The existing steel pipe concrete structure is widely applied to super high-rise buildings because the bending resistance of steel and the compression resistance of concrete are well exerted. In coastal area environment, the steel pipe is easy to rust, and the safety and durability of the structure are greatly influenced. In recent years, although FRP materials are beginning to be used as building materials for building structural reinforcement and earthquake resistance, when concrete inside the FRP encased column is crushed under the action of an earthquake, the structural performance of the encased FRP material is greatly reduced, which results in structural failure. Meanwhile, more efficient and reasonable node connection modes need to be provided for the FRP columns.
Disclosure of Invention
In order to solve the problems, the invention provides an FRP (fiber reinforced plastic) wrapped crossed steel reinforced concrete column-H-shaped steel beam connecting node and an installation method.
The invention provides an FRP (fiber reinforce Plastic) coated crossed steel reinforced concrete column-H-shaped steel beam connecting node, which comprises the FRP coated crossed steel reinforced concrete column, an H-shaped steel beam and a square node connecting sleeve, wherein the FRP coated crossed steel reinforced concrete column comprises an upper column and a lower column, the square node connecting sleeve is positioned between the upper column and the lower column, the upper column and the lower column are respectively connected with the square node connecting sleeve through a column end opening connecting plate, and the H-shaped steel beam is respectively fixedly connected with the column end opening connecting plate and the square node connecting sleeve;
the FRP-coated crossed steel reinforced concrete column comprises a crossed steel skeleton, an inserted perforated steel reinforced connector and FRP coated outside the crossed steel skeleton, wherein the crossed steel skeleton comprises four crossed steel plates, steel plate chamfers and steel bar restraint plates, the four crossed steel plates are uniformly arranged at intervals, the inward sides of the crossed steel plates are crossed with the center of the FRP-coated crossed steel reinforced concrete column, the outward sides of the crossed steel plates are fixedly provided with the steel plate chamfers, two adjacent crossed steel plates are fixedly connected through the steel bar restraint plates, the steel bar restraint plates are provided with steel bar insertion holes, and the upper end or the lower end of the crossed steel skeleton is fixedly connected with the inserted perforated steel reinforced connector;
the inserted perforated steel rib connecting piece comprises four steel rib connecting pieces in cross connection, and steel plate dovetails are arranged on the column lateral edges outside the steel rib connecting pieces;
the square node connecting sleeve comprises a core sleeve, a reinforcing steel bar fixing plate and lateral connecting plates, wherein the reinforcing steel bar fixing plate with a central opening is fixed at the upper end and the lower end of the core sleeve respectively, dovetail grooves are formed in four corners of a square inner cavity of the core sleeve and the reinforcing steel bar fixing plate along the column direction, reinforcing steel bar inserting holes are formed in the periphery of the reinforcing steel bar fixing plate, and the lateral connecting plates are fixed on central lines of outer walls of four sides of the core sleeve respectively;
the column end opening connecting plate comprises an opening connecting plate and a strip-shaped partition plate fixed on the opening connecting plate, a square opening is formed in the center of the opening connecting plate, the strip-shaped partition plates are arranged outside the four sides of the square opening respectively, a plurality of steel bar inserting holes are formed in the opening connecting plate between the square opening and the strip-shaped partition plate at intervals, and a plurality of bolt holes are formed in the opening connecting plate on the outer side of the strip-shaped partition plate at intervals;
the steel rib connecting piece penetrates through a square opening in the center of the opening connecting plate, the steel plate dovetails are inserted into the dovetail grooves, and the crossed steel skeleton, the column end opening connecting plate and the square node connecting sleeve are fixedly connected through reinforcing steel bars.
Furthermore, corner gaps are arranged between every two adjacent strip-shaped partition plates, and steel plate chamfers of the crossed steel skeleton are correspondingly inserted into the corner gaps.
Furthermore, the steel ribs of the inserted perforated steel rib connecting piece are provided with openings, and concrete passes through the openings to be tightly meshed with the inserted perforated steel rib connecting piece.
Furthermore, FRP is wrapped and wound on the periphery of the crossed steel skeleton and the strip-shaped partition plates.
Furthermore, the upper flange and the lower flange of the H-shaped steel beam are fixedly connected with the column end opening connecting plate through flange bolt plates, the web plate of the H-shaped steel beam is fixedly connected with the lateral connecting plate on the square node connecting sleeve through web bolt plates, and the beam column nodes form a whole.
Furthermore, two ends of the steel bar are fixed through bolts.
The invention also comprises a method for installing the FRP-coated crossed steel reinforced concrete column-H-shaped steel beam connecting node, wherein the method comprises the following steps:
the method comprises the following steps: welding the inserted perforated steel rib connecting piece on the upper part of the crossed steel skeleton of the lower column;
step two: penetrating the inserted perforated steel rib connecting piece through a square opening in the center of the column end opening connecting plate from bottom to top;
step three: the upper part of a steel plate dovetail of the plug-in type perforated steel rib connecting piece is inserted into the lower part of a dovetail groove of the square node connecting sleeve, a steel bar sequentially penetrates through a crossed steel skeleton of the lower column, a column end opening connecting plate and a steel bar fixing plate at the lower part of the square node connecting sleeve from bottom to top, two ends of the steel bar are fixed through bolts, and FRP (fiber reinforced Plastic) is wrapped on the peripheries of the lower column and the strip-shaped partition plate;
step five: according to the first step to the third step, the inserted type perforated steel rib connecting piece is welded to the lower portion of the crossed steel skeleton of the upper column and penetrates through the opening in the center of the column end opening connecting plate from top to bottom, the lower portion of the steel plate dovetail of the inserted type perforated steel rib connecting piece is inserted into the upper portion of the dovetail groove of the square node connecting sleeve, the steel bars sequentially penetrate through the crossed steel skeleton of the lower column, the column end opening connecting plate and the steel bar fixing plate on the upper portion of the square node connecting sleeve from top to bottom, and two ends of the steel bars are fixed through bolts;
step six: FRP is wrapped on the periphery of the upper column and the strip-shaped partition plate;
step seven: connecting the upper flange and the lower flange of the H-shaped steel beam with a column end opening connecting plate through flange bolt plates, and connecting a web plate of the H-shaped steel beam with a lateral connecting plate of a square node connecting sleeve through a web bolt plate;
step eight: and after the beam-column joint connection is completed, concrete is uniformly poured and vibrated from the upper part column to the lower part, and the concrete is cured and formed at one time.
The invention has the following beneficial effects:
(1) the steel members can be processed and produced in factories and transported to a construction site for assembly, so that the construction quality and the construction efficiency are improved;
(2) the FRP material is light in weight, high in strength and corrosion resistant, can restrict the internal concrete and crossed steel frameworks, improves the axial pressure and bending resistance bearing capacity of the column, and can be used as a template for pouring concrete;
(3) the crossed steel skeleton has a supporting effect on concrete and the wrapped FRP, so that the bearing capacity of the column is improved;
(4) the upper column and the lower column are connected with the middle square node connecting sleeve to form a whole by the vertical force transmission design of the steel bars, so that the up-and-down connection of the nodes is greatly enhanced, and the bonding strength of the steel bars and concrete is enhanced by the anchoring of the steel bars;
(5) the reinforcing steel bar restraint plate on the crossed steel skeleton can not only transmit vertical force through the reinforcing steel bar, but also enhance the lateral rigidity of the crossed steel skeleton and improve the bonding and engaging force with concrete;
(6) the inserted perforated steel rib connecting piece is connected with the square node connecting sleeve through the dovetail, so that the rigidity of the connecting sleeve is improved, and the engaging capacity of the connecting piece and concrete is improved due to the design of the reserved hole;
(7) the lateral connecting plates are arranged on the periphery of the square node connecting sleeve, so that the square node connecting sleeve can provide lateral support for the connecting sleeve while being connected with the H-shaped steel beam, and the strength of the node sleeve is improved; and the hollow design of the sleeve can ensure that the concrete is poured and formed from top to bottom at one time.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded schematic view of the present invention;
FIG. 3 is an exploded view of the cross-type steel reinforced concrete column wrapped around the upper FRP;
FIG. 4 is an exploded view of the cross-type steel skeleton;
FIG. 5 is a schematic view of the inserted steel skeleton connector;
FIG. 6 is a schematic view of a column end opening web;
FIG. 7 is a schematic view of a square node connection sleeve;
FIG. 8(a) is a schematic structural diagram of a first node installation step of the present invention;
FIG. 8(b) is a schematic structural diagram of the second node installation step of the present invention;
FIG. 8(c) is a schematic structural diagram of the third node installation step of the present invention;
FIG. 8(d) is a schematic structural diagram of the fourth node installation step of the present invention;
fig. 8(e) is a schematic structural diagram of a fifth node installation step of the present invention;
fig. 8(f) is a schematic structural view of a sixth node installation step of the present invention;
fig. 8(g) is a schematic structural diagram of a node installation step six of the present invention.
Wherein the figures include the following reference numerals: 1. the FRP is wrapped by a crossed steel reinforced concrete column; 2. h-shaped steel beams, 21 flange bolt plates, 22 web bolt plates; 3. the square joint connecting device comprises a square joint connecting sleeve 31, a core sleeve 32, a dovetail groove 33, a reinforcing steel bar fixing plate 34 and a lateral connecting plate; 4. the steel bar reinforced concrete structure comprises a crossed steel skeleton 41, crossed steel plates 42, steel plate chamfers 43 and a steel bar restraint plate; 5. the steel bar connecting piece 51, the steel bar 52, the steel plate dovetail 53 and the steel plate are provided with holes; 6. a column end opening connecting plate 61, an opening connecting plate 62 and a strip-shaped partition plate; 7. reinforcing steel bars; 8. FRP; 9. a bolt; 10. and (3) concrete.
Detailed Description
The following further describes the structural design and installation process of the node according to the present invention with reference to the following embodiments and accompanying drawings, and the following further describes in detail.
The utility model provides a FRP outsourcing crossing type steel reinforced concrete column-H shaped steel roof beam connected node, as shown in fig. 1 and 2, including FRP outsourcing crossing type steel reinforced concrete column 1, H shaped steel roof beam 2 and square node connecting sleeve 3, FRP outsourcing crossing type steel reinforced concrete column 1 includes upper portion post and lower part post, square node connecting sleeve 3 is located between upper portion post and the lower part post, upper portion post and lower part post are connected through square node connecting sleeve 3, the upper and lower edge of a wing of H shaped steel roof beam 2 passes through edge of a wing bolt board 21 and column end opening connecting plate 6 fixed connection, the web of H shaped steel roof beam 2 passes through web bolt board 22 and is connected with the side direction connecting plate 34 on the square node connecting sleeve 3, make the beam column node form a whole.
The FRP-coated crossed steel reinforced concrete column 1 comprises a crossed steel skeleton 4, an inserted perforated steel reinforced connector 5 and FRP8 wrapped outside the crossed steel skeleton 4, as shown in figure 4, four crossed steel plates 41 are uniformly arranged at intervals, in the embodiment, adjacent crossed steel plates are vertically connected, columns inside the crossed steel plates 41 are intersected at the center of the FRP-coated crossed steel reinforced concrete column towards the edge, steel plate chamfers 42 are fixed at the column outside the crossed steel plates 41 towards the edge, two adjacent crossed steel plates 41 are fixedly connected through a steel bar restraint plate 43, steel bar insertion holes are formed in the steel bar restraint plate 43, and the inserted perforated steel reinforced connector 5 is fixedly connected to the upper end or the lower end of the crossed steel skeleton 4.
As shown in fig. 7, the square joint connecting sleeve 3 includes a core sleeve 31, a reinforcing steel bar fixing plate 33 and a lateral connecting plate 34, the reinforcing steel bar fixing plate 33 with a central opening is fixed at the upper and lower ends of the core sleeve 31, dovetail grooves 32 are formed at four corners of the square inner cavity of the core sleeve 31 and the reinforcing steel bar fixing plate 33 along the column direction, a plurality of reinforcing steel bar insertion holes are formed around the reinforcing steel bar fixing plate 33, and the lateral connecting plate 34 is fixed on the central line of the outer wall of the four sides of the core sleeve 31.
As shown in fig. 5, the inserted steel rib connector 5 includes inserted steel ribs 51, steel plate dovetails 52 and steel plate openings 53, four inserted steel ribs 51 are uniformly spaced, in this embodiment, two adjacent inserted steel ribs 51 are vertically connected, and the inserted steel ribs 51 are fixedly connected with the crossed steel frame 4 in the upper column or the lower column by welding. Open pore 53 has been reserved on reinforcing bar 51, and concrete 10 can pass through open pore 53 and insertingly interlock with bayonet trompil reinforcing bar connecting piece 5 and be in the same place, and the post outside reinforcing bar connecting piece 51 is equipped with steel sheet forked tail 52 to the limit, and steel sheet forked tail 52 can insert in the dovetail 32 of square core sleeve 31 accurately.
As shown in fig. 6, the column end opening connecting plate 6 includes an opening connecting plate 61 and a strip-shaped partition plate 62 fixed on the opening connecting plate, a square opening is provided at the center of the opening connecting plate 61, the strip-shaped partition plates 62 are respectively provided outside four sides of the square opening, a plurality of steel bar insertion holes are provided at intervals on the opening connecting plate 61 between the square opening and the strip-shaped partition plate, a plurality of bolt holes are provided at intervals on the opening connecting plate 61 outside the strip-shaped partition plate, and the flange bolt plate 21 can be connected with the flange of the H-shaped steel beam 2. Corner gaps are arranged between two adjacent strip-shaped partition plates 62, and the steel plate chamfers 42 of the crossed steel framework 4 are correspondingly inserted into the corner gaps.
The FRP8 material is wrapped around the cross steel skeleton 4 and the strip partition plate 62, and can be used as a pouring form when the concrete 10 is poured, cured and formed.
Reinforcing bar 7 passes the reinforcing bar jack of reinforcing bar about plate 43 in proper order, the reinforcing bar jack of opening connecting plate 61, the reinforcing bar jack of reinforcing bar fixed plate 33, thereby will intersect type steel skeleton 4, column end opening connecting plate 6 and square node connecting sleeve 3 link together, upper portion post and lower part post are connected with square node connecting sleeve 3 through reinforcing bar 7 respectively, vertical biography power design through the reinforcing bar makes upper portion post and lower part post connect into a whole, bolt 9 is fixed through at the both ends of reinforcing bar 7, 7 anchors in concrete 10 simultaneously, the bonding strength with the concrete has been strengthened.
The crossed steel skeleton 4, the inserted perforated steel skeleton connecting piece 5, the column end opening connecting plate 6 and the square node connecting sleeve 3 of the upper column and the lower column are connected together, and the interior of the column end opening connecting plate still keeps vertical through, so that the one-step pouring molding of the concrete 10 is facilitated.
The crossed steel skeleton 4 and the inserted perforated steel skeleton connecting piece 5 are welded and then inserted into the dovetail groove 32 of the square node connecting sleeve 3 through the column end opening connecting plate 6. The steel bars 7 sequentially penetrate through the jacks in the column end opening connecting plate 6 and the steel bar fixing plate 33 from the jacks in the steel bar restraint plate 43, the two ends of the steel bars are fixed by bolts 9, the FRP8 wraps the outer surfaces of the upper column and the lower column, and after connection is completed, the concrete 10 is poured into the columns.
The invention also comprises a method for installing the FRP-coated crossed steel reinforced concrete column-H-shaped steel beam connecting node, as shown in figures 8(a) to 8(g), which comprises the following installation steps:
step one, as shown in fig. 8(a), an insertion type perforated steel skeleton connector 5 is welded on the upper part of the cross type steel skeleton 4 of the lower column.
Step two, as shown in fig. 8(b), the inserted hole-forming steel rib connecting piece 5 passes through the square opening in the center of the column end opening connecting plate 6 from bottom to top.
Step three, as shown in fig. 8(c), the upper part of the steel plate dovetail 52 of the insertion type perforated steel rib connecting piece 5 is inserted into the lower part of the dovetail groove 32 of the square node connecting sleeve 3, the steel bar 7 sequentially passes through the cross type steel rib frame 4 of the lower column, the column end opening connecting plate 6 and the steel bar fixing plate 33 at the lower part of the square node connecting sleeve 3 from bottom to top, two ends of the steel bar 7 are fixed by bolts 9, and the periphery of the lower column and the strip-shaped partition plate 62 is wrapped with FRP 8.
Step four, as shown in fig. 8(d), according to the steps one to four, the insertion type perforated steel skeleton connecting piece 5 is welded to the lower portion of the crossed steel skeleton 4 of the upper column and penetrates through the opening in the center of the column end opening connecting plate 6 from top to bottom, the lower portion of the steel plate dovetail 52 of the insertion type perforated steel skeleton connecting piece 5 is inserted into the upper portion of the dovetail groove 32 of the square node connecting sleeve 3, the reinforcing steel bars 7 sequentially penetrate through the crossed steel skeleton 4 of the lower column, the column end opening connecting plate 6 and the reinforcing steel bar fixing plate 33 on the upper portion of the square node connecting sleeve 3 from top to bottom, and two ends of the reinforcing steel bars 7 are fixed through bolts 9.
Step five, as shown in fig. 8(e), FRP8 is wrapped around the upper column and the strip-shaped partition plate 62.
Step six, as shown in fig. 8(f), connecting the upper and lower flanges of the H-shaped steel beam 2 with the column end opening connecting plate 6 through the flange bolt plate 21, and connecting the web plate of the H-shaped steel beam 2 with the lateral connecting plate 34 of the square node connecting sleeve 3 through the web bolt plate 22.
Seventhly, as shown in fig. 8(g), after the beam-column joint connection is completed, uniformly pouring and vibrating the concrete 10 from the upper column to the lower column, and performing one-step curing and forming.
The foregoing is only a preferred embodiment of the present invention and is not intended to limit the scope of the invention, which may be modified and varied by those skilled in the art. Any modification, equivalent replacement, optimization and the like within the design concept and principle of the present invention shall be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a FRP outsourcing crossing type steel reinforced concrete column-H shaped steel roof beam connected node which characterized in that: the FRP outsourcing crossed type steel reinforced concrete column comprises an FRP outsourcing crossed type steel reinforced concrete column (1), an H-shaped steel beam (2) and a square node connecting sleeve (3), wherein the FRP outsourcing crossed type steel reinforced concrete column (1) comprises an upper column and a lower column, the square node connecting sleeve (3) is positioned between the upper column and the lower column, the upper column and the lower column are respectively connected with the square node connecting sleeve (3) through a column end opening connecting plate (6), and the H-shaped steel beam (2) is respectively fixedly connected with the column end opening connecting plate (6) and the square node connecting sleeve (3);
the FRP wrapped crossed steel reinforced concrete column (1) comprises a crossed steel skeleton (4), an inserted perforated steel reinforced connector (5) and FRP (8) wrapped outside the crossed steel skeleton (4), the crossed steel skeleton (4) comprises four crossed steel plates (41), steel plate chamfers (42) and steel bar restraint plates (43), the four crossed steel plates (41) are uniformly arranged at intervals, the inward sides of the columns of the crossed steel plates (41) are crossed with the center of the FRP-coated crossed steel reinforced concrete column, the outward sides of the columns of the crossed steel plates (41) are fixedly provided with the steel plate chamfers (42), two adjacent crossed steel plates (41) are fixedly connected through the steel bar restraint plates (43), the steel bar restraint plates (43) are provided with steel bar insertion holes, and the upper end or the lower end of the crossed steel skeleton (4) is fixedly connected with an inserted perforated steel bar connecting piece (5);
the plug-in type perforated steel rib connecting piece comprises four steel rib connecting pieces (51) which are in cross connection, and a steel plate dovetail (52) is arranged at the column lateral edge outside the steel rib connecting pieces (51);
the square node connecting sleeve (3) comprises a core sleeve (31), a reinforcing steel bar fixing plate (33) and lateral connecting plates (34), wherein the reinforcing steel bar fixing plate (33) with a central opening is fixed at the upper end and the lower end of the core sleeve (31) respectively, dovetail grooves (32) are formed in four corners of a square inner cavity of the core sleeve (31) and the reinforcing steel bar fixing plate (33) along the column direction, reinforcing steel bar inserting holes are formed in the periphery of the reinforcing steel bar fixing plate (33), and the lateral connecting plates (34) are fixed on central lines of outer walls of the four sides of the core sleeve (31) respectively;
the column end opening connecting plate (6) comprises an opening connecting plate (61) and strip-shaped partition plates (62) fixed on the opening connecting plate, a square opening is formed in the center of the opening connecting plate (61), the strip-shaped partition plates (62) are respectively arranged outside the four sides of the square opening, a plurality of steel bar inserting holes are formed in the opening connecting plate (61) between the square opening and the strip-shaped partition plates at intervals, and a plurality of bolt holes are formed in the opening connecting plate (61) on the outer side of each strip-shaped partition plate at intervals;
the steel rib connecting piece (51) penetrates through a square opening in the center of the opening connecting plate (61), the steel plate dovetail (52) is inserted into the dovetail groove (32), and the crossed steel skeleton (4), the column end opening connecting plate (6) and the square node connecting sleeve (3) are fixedly connected through the steel bar (7).
2. The FRP-encased crossed steel reinforced concrete column-H-shaped steel beam connection node as claimed in claim 1, wherein corner gaps are provided between two adjacent strip-shaped partition plates (62), and steel plate chamfers (42) of the crossed steel skeleton (4) are correspondingly inserted into the corner gaps.
3. The FRP-encased crossed steel-reinforced concrete column-H-beam connection node as recited in claim 1, wherein the steel ribs (51) of the inserted perforated steel-reinforced connectors (5) are provided with openings (53), and the concrete (10) passes through the openings (53) to be tightly engaged with the inserted perforated steel-reinforced connectors (5).
4. The FRP wrapped crossed steel reinforced concrete column-H-shaped steel beam connection node as claimed in claim 1, wherein FRP (8) is wrapped and wound around the periphery of the crossed steel skeleton (4) and the strip-shaped partition plate (62).
5. The FRP outsourcing crossed steel reinforced concrete column-H-shaped steel beam connecting joint as claimed in claim 1, wherein the upper and lower flanges of the H-shaped steel beam (2) are fixedly connected with the column end opening connecting plate (6) through flange bolt plates (21), and the web plate of the H-shaped steel beam (2) is fixedly connected with the lateral connecting plate (34) on the square joint connecting sleeve (3) through web bolt plates (22).
6. The FRP wrapped crossed steel reinforced concrete column-H-shaped steel beam connection node according to claim 1, wherein both ends of the steel bar (7) are fixed by bolts (9).
7. A method for installing a connection node of an FRP (fiber reinforced Plastic) wrapped crossed steel reinforced concrete column and an H-shaped steel beam by using any one of claims 1 to 6, which is characterized by comprising the following steps:
the method comprises the following steps: welding the inserted perforated steel rib connecting piece (5) on the upper part of the crossed steel skeleton (4) of the lower column;
step two: the inserted perforated steel rib connecting piece (5) penetrates through a square opening in the center of the column end opening connecting plate (6) from bottom to top;
step three: the upper part of a steel plate dovetail (52) of the plug-in type perforated steel rib connecting piece (5) is inserted into the lower part of a dovetail groove (32) of the square node connecting sleeve (3), a steel bar (7) sequentially penetrates through a crossed steel skeleton (4) of a lower column, a column end opening connecting plate (6) and a steel bar fixing plate (33) at the lower part of the square node connecting sleeve (3) from bottom to top, two ends of the steel bar (7) are fixed through bolts (9), and FRP (8) is wrapped on the periphery of the lower column and the strip-shaped partition plate (62);
step four: according to the first step to the third step, the inserted type perforated steel rib connecting piece (5) is welded to the lower portion of the crossed steel skeleton (4) of the upper column and penetrates through the opening in the center of the column end opening connecting plate (6) from top to bottom, the lower portion of a steel plate dovetail (52) of the inserted type perforated steel rib connecting piece (5) is inserted into the upper portion of a dovetail groove (32) of the square node connecting sleeve (3), the reinforcing steel bars (7) sequentially penetrate through the crossed steel skeleton (4) of the lower column, the column end opening connecting plate (6) and a reinforcing steel bar fixing plate (33) on the upper portion of the square node connecting sleeve (3) from top to bottom, and two ends of the reinforcing steel bars (7) are fixed through bolts (9);
step five: FRP (8) is wrapped on the periphery of the upper column and the strip-shaped partition plate (62);
step six: connecting upper and lower flanges of the H-shaped steel beam (2) with a column end opening connecting plate (6) through a flange bolt plate (21), and connecting a web plate of the H-shaped steel beam (2) with a lateral connecting plate (34) of the square node connecting sleeve (3) through a web plate bolt plate (22);
step seven: after the beam-column joint connection is completed, concrete (10) is uniformly poured and vibrated from the upper part column to the lower part, and is cured and formed at one time.
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|---|---|---|---|
| CN202110947286.4A CN113513089B (en) | 2021-08-18 | 2021-08-18 | FRP (fiber reinforced plastic) wrapped crossed steel reinforced concrete column-H-shaped steel beam connecting node and mounting method |
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| CN202110947286.4A CN113513089B (en) | 2021-08-18 | 2021-08-18 | FRP (fiber reinforced plastic) wrapped crossed steel reinforced concrete column-H-shaped steel beam connecting node and mounting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575533A (en) * | 2022-03-09 | 2022-06-03 | 河南大学 | Modularized prefabricated assembled beam-column combined node adopting bolt connection |
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| CN103790243A (en) * | 2014-02-27 | 2014-05-14 | 南京工业大学 | Steel-reinforced concrete cross-shaped column-steel beam connection joint |
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| US10876282B1 (en) * | 2019-09-21 | 2020-12-29 | Qingdao university of technology | Fabricated limiting-reinforced steel-wood frosted sleeve composite joint |
| CN111379333A (en) * | 2020-02-24 | 2020-07-07 | 合肥工业大学 | Beam column node containing buckling restrained flange connecting assembly |
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| CN114575533A (en) * | 2022-03-09 | 2022-06-03 | 河南大学 | Modularized prefabricated assembled beam-column combined node adopting bolt connection |
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| CN113513089B (en) | 2022-08-30 |
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