CN113047454B - FRP (fiber reinforced plastic) steel concrete column and steel beam combined node and mounting method - Google Patents
FRP (fiber reinforced plastic) steel concrete column and steel beam combined node and mounting method Download PDFInfo
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- CN113047454B CN113047454B CN202110372051.7A CN202110372051A CN113047454B CN 113047454 B CN113047454 B CN 113047454B CN 202110372051 A CN202110372051 A CN 202110372051A CN 113047454 B CN113047454 B CN 113047454B
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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
- E04B1/19—Three-dimensional framework structures
- E04B1/1903—Connecting nodes specially adapted therefor
- E04B1/1912—Connecting nodes specially adapted therefor with central cubical connecting element
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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
- E04B1/19—Three-dimensional framework structures
- E04B1/1903—Connecting nodes specially adapted therefor
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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
- E04B1/19—Three-dimensional framework structures
- E04B2001/1957—Details of connections between nodes and struts
- E04B2001/1963—Screw connections with axis at an angle, e.g. perpendicular, to the main axis of the strut
Abstract
The invention relates to the technical field of building structural members, in particular to an FRP (fiber reinforced plastic) steel concrete column and steel beam combined node and an installation method. The double-I-shaped FRP steel concrete column comprises an upper FRP double-I-shaped steel concrete column and a lower FRP double-I-shaped steel concrete column, and the upper FRP double-I-shaped steel concrete column is connected with the lower FRP double-I-shaped steel concrete column through a connecting cylinder. The corrosion resistance is good, the steel plate is transported to the site to be assembled and assembled through bolt connection, and the structural integrity and the bearing capacity of the column body are improved.
Description
Technical Field
The invention relates to the technical field of building structural members, in particular to an FRP (fiber reinforced plastic) steel concrete column and steel beam combined node and an installation method.
Background
With the development of social economy, the construction industry is developing towards the direction of optimizing industrial structures, popularizing fabricated buildings, green buildings and the like, and the transformation of the construction industry becomes the inevitable trend of the development of the social economy.
The traditional reinforced concrete building has strong pressure resistance but insufficient bending resistance. The steel pipe concrete structure can effectively exert the respective advantages of steel and concrete, and simultaneously overcomes the defect that the steel pipe structure is easy to generate local buckling. However, in coastal areas, the steel pipe concrete structure is easy to rust, the section of the member is reduced, the bearing capacity is reduced, particularly the 'rust pit' generated by corrosion increases the possibility of brittle failure of the steel structure, and the durability of the steel structure is also seriously influenced.
Fiber Reinforced Polymers (FRP) have gained increasing popularity over the past 20 years as a sheathing material for reinforced concrete columns for reinforcement and earthquake resistance. In recent years, FRP pipes are widely used in more new steel-concrete structures due to their advantages such as the thermal expansion coefficient is similar to that of concrete. The interior of the traditional FRP concrete column is plain concrete or reinforced concrete, and researches find that the FRP outer tube can cause the problems of buckling and the like after the built-in concrete is damaged under the action of strong shock.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an FRP steel reinforced concrete column and steel beam combined node and an installation method.
In order to achieve the purpose, the combined node of the FRP concrete column and the steel beam comprises the FRP double I-shaped steel concrete column, a beam column connecting piece and an H-shaped steel beam, wherein the FRP double I-shaped steel concrete column comprises an upper FRP double I-shaped steel concrete column and a lower FRP double I-shaped steel concrete column, and the upper FRP double I-shaped steel concrete column is connected with the lower FRP double I-shaped steel concrete column through a connecting cylinder;
the FRP double I-shaped steel concrete column comprises an outer wrapping tube and a double I-shaped steel skeleton positioned on the inner side of the outer wrapping tube, the double I-shaped steel skeleton comprises cross ribs, a steel bar fixing plate and inserting plates positioned on four sides respectively, the width of each inserting plate is smaller than that of the inner wall of the FRP double I-shaped steel concrete column, four rib plates of each cross rib are provided with long hole grooves along the vertical direction, the distance from each long hole groove to the center of each cross rib is equal, the center of each steel bar fixing plate is provided with a round hole, steel bar inserting holes I are formed in the periphery of each steel bar fixing plate, and each steel bar fixing plate is installed on one side, provided with the long hole grooves, of each cross rib;
the beam-column connecting piece comprises an upper annular plate, a lower annular plate, a core cylinder and side plates, the diameter of the inner wall of the core cylinder is larger than that of the outer wall of the connecting cylinder, the upper end and the lower end of the core cylinder are respectively provided with the upper annular plate and the lower annular plate, the centers of the upper annular plate and the lower annular plate are provided with round holes, the peripheries of the upper annular plate and the lower annular plate are provided with steel bar jacks II, and the side plates are positioned between the upper annular plate and the lower annular plate and are vertically connected with the upper annular plate, the lower annular plate and the core cylinder;
the reinforcing bar of the two I type steel concrete columns of upper portion FRP passes steel bar jack II and beam column connecting piece of upper ring board and is connected, the reinforcing bar of the two I type steel concrete columns of lower part FRP passes steel bar jack II and beam column connecting piece of lower ring board and is connected, it passes the core drum of beam column connecting piece to connect the drum, and peg graft with the cross rib of the two I type steel frameworks of the two I type steel concrete columns of upper portion FRP and the two I type steel concrete columns of lower part FRP respectively, the edge of a wing of H shaped steel roof beam and the crown plate overlap joint of beam column connecting piece, the web and the curb plate overlap joint of H shaped steel roof beam.
Furthermore, the edge of a wing of H shaped steel roof beam passes through the ring board overlap joint of connecting plate I and connecting plate II and beam column connecting piece, and the web and the curb plate of H shaped steel roof beam pass through III overlap joints of connecting plate.
The reinforcing steel bar of the upper FRP double I-shaped steel concrete column is connected with the upper ring plate through a nut, and the reinforcing steel bar of the lower FRP double I-shaped steel concrete column is connected with the lower ring plate through a nut.
The double I-shaped steel frameworks are inserted into the outer wrapping pipes of the upper FRP double I-shaped steel concrete column and the lower FRP double I-shaped steel concrete column, so that the FRP outer pipe is restrained, the buckling of the FRP outer pipe is prevented, and the bending resistance of the FRP double I-shaped steel concrete column can be improved.
The outer wrapping tube of the FRP double I-shaped steel concrete column is made of FRP materials, so that the corrosion resistance and the durability can be effectively improved.
The upper flange of the H-shaped steel beam is connected with the upper ring plate, the lower flange of the H-shaped steel beam is connected with the lower ring plate, and the web plate and the side plate of the H-shaped steel beam are connected through high-strength bolts.
The reinforcing steel bar of the FRP double I-shaped steel concrete column is an FRP reinforcing steel bar, and has the advantages of light weight, high tensile strength, strong corrosion resistance, strong material binding capacity and the like.
The connecting cylinder is respectively inserted into the slot hole grooves of the cross ribs of the double I-shaped steel frameworks of the upper FRP double I-shaped steel concrete column and the lower FRP double I-shaped steel concrete column, so that the integrity of the FRP double I-shaped steel concrete column is improved.
The invention comprises a method for installing the concrete column and steel beam combined node, which comprises the following steps;
the first step is as follows: inserting the double-I-shaped steel frameworks into the inner walls of the outer wrapping pipes of the upper FRP double-I-shaped steel concrete column and the lower FRP double-I-shaped steel concrete column respectively, wherein a long hole groove of the double-I-shaped steel framework of the upper FRP double-I-shaped steel concrete column faces downwards, and a long hole groove of the double-I-shaped steel framework of the lower FRP double-I-shaped steel concrete column faces upwards;
the second step is that: aligning a steel bar jack II of a lower ring plate of the beam column connecting piece with a steel bar jack I of a steel bar fixing plate of the lower FRP double I-type steel concrete column, inserting a steel bar into the steel bar jack II of the lower ring plate, sequentially inserting the lower ring plate and the steel bar fixing plate, and fixedly connecting the upper end of the steel bar after being screwed by a screw cap;
the third step: penetrating the connecting cylinder through a core cylinder of the beam-column connecting piece, and inserting the connecting cylinder into a long hole groove of a double I-shaped steel framework of the lower FRP double I-shaped steel concrete column;
the fourth step: inserting the upper part of the connecting cylinder into a long hole groove of a double I-shaped steel skeleton of the upper FRP double I-shaped steel concrete column, inserting a steel bar into a steel bar inserting hole II of the upper ring plate, sequentially inserting the upper ring plate and a steel bar fixing plate, and fixedly connecting the lower end of the steel bar after being screwed by a screw cap;
the fifth step: the upper flange and the lower flange of the H-shaped steel beam are respectively lapped with the upper ring plate and the lower ring plate through a connecting plate I and a connecting plate II, and the web plate and the side plate of the H-shaped steel beam are lapped through a connecting plate III;
and a sixth step: concrete is poured into the FRP double-I-shaped steel concrete column through an opening of the upper FRP double-I-shaped steel concrete column, so that the connecting part forms a whole through the occlusion effect of the concrete.
The beneficial effects of the invention are:
according to the FRP steel concrete column and steel beam combined node designed based on the vertical splicing force transmission device, steel of the whole node part can be processed and manufactured in a factory and conveyed to a site to be assembled and assembled through bolt connection, so that the quality problems such as cold and hot cracks caused by welding and the like and the mechanical defects such as stress concentration are avoided;
the outer wrapping pipe of the FRP steel concrete column is made of FRP materials, so that the corrosion resistance is good, the oxidation corrosion of a steel skeleton in the steel pipe can be well prevented, and the durability of the structure is improved;
the double I-shaped steel frameworks arranged in the FRP steel concrete column have a constraint effect on the concrete in the steel tube, so that the steel tube is stressed in multiple directions, and the bearing capacity of the structure is improved; the FRP outer pipe is supported to prevent buckling, so that the bending resistance of the structure can be improved; in addition, the built-in double I-shaped steel framework can serve as a longitudinal steel bar of the FRP column, so that the ductility of the structure is improved;
the upper FRP double I-shaped steel concrete column and the lower FRP double I-shaped steel concrete column are integrally spliced and assembled with the long hole groove of the section steel framework through the connecting steel pipe, the problem that the upper column and the lower column of a node are independent is solved, the integrity of the structure is improved while the assembled structure is realized, the bearing capacity of the columns can be improved, and the purposes of strong columns and weak beams are achieved.
Drawings
FIG. 1 is a schematic diagram of a composite node according to the present invention;
FIG. 2 is a schematic structural exploded view of a composite node of the present invention;
FIG. 3 is a schematic structural exploded view of a lower FRP double I-type steel concrete column;
FIG. 4 is a schematic structural exploded view of a double I-type steel skeleton;
FIG. 5 is a schematic structural view of a beam-column connection;
FIG. 6(a) is a schematic view of setting up an overcladding tube;
FIG. 6(b) is a schematic view showing the connection of a double I-type steel skeleton and an overcladding tube;
FIG. 6(c) is a schematic illustration of a second step in the installation method;
FIG. 6(d) is a schematic illustration of a third step in the installation method;
FIG. 6(e) is a schematic illustration of a fourth step in the installation method;
fig. 6(f) is a schematic diagram of the fifth step in the mounting method.
In the figure: 1. FRP double I-shaped steel concrete columns; 2. a beam-column connection; 3. an H-shaped steel beam; 4. an upper FRP double I-shaped steel concrete column; 5. a lower FRP double I-shaped steel concrete column; 6. a connecting cylinder; 7. a double I-shaped steel framework; 8. a cross rib; 9. inserting plates; 10. fixing a steel bar; 11. a slot hole groove; 12. reinforcing steel bars; 13. an upper ring plate; 14. a lower ring plate; 15. a core cylinder; 16. a side plate; 17. a connecting plate I; 18. a connecting plate II; 19. and a connecting plate III.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1 and 2, the FRP steel reinforced concrete column and steel beam combined node of the present invention includes an FRP double I-type steel reinforced concrete column 1, a beam column connector 2, and an H-shaped steel beam 3, the FRP double I-type steel reinforced concrete column 1 includes an upper FRP double I-type steel reinforced concrete column 4 and a lower FRP double I-type steel reinforced concrete column assembly 5, and the upper FRP double I-type steel reinforced concrete column 4 and the lower FRP double I-type steel reinforced concrete column 5 are connected by a connecting cylinder 6.
The upper FRP double I-shaped steel concrete column 4 and the lower FRP double I-shaped steel concrete column 5 both comprise an outer wrapping pipe and a double I-shaped steel framework 7. Fig. 3 and 4 are schematic structural diagrams of the lower FRP double I-section steel concrete column 5, and the structure of the lower FRP double I-section steel concrete column 5 is taken as an example in this embodiment to describe the structure of the FRP double I-section steel concrete column. The inner wall of the outer wrapping pipe is provided with a double-I-shaped steel framework 7, the double-I-shaped steel framework 7 comprises cross ribs 8, inserting plates 9 and reinforcing steel fixing plates 10, the inserting plates 9 are located on four sides, and the width of each inserting plate 9 is smaller than that of the inner wall of the outer wrapping pipe of the FRP double-I-shaped steel concrete column. The cross rib 8 is formed by connecting four rib plates arranged in the vertical direction, adjacent rib plates are vertically connected, and the four rib plates are connected together to form the cross rib. The four rib plates are respectively provided with a hole-opening groove 11 along the vertical direction, the distances from the four hole-opening grooves to the center of the cross rib are equal, and the double-I-shaped steel framework 7 is inserted in a mode that four inserting plates 9 are respectively attached to the inner walls of four sides of the outer wrapping pipe of the lower FRP double-I-shaped steel concrete column. The reinforcing bar fixing plate 10 is installed in one side that the cross rib has the slot hole recess, and the centre of reinforcing bar fixing plate 10 is equipped with the round hole, can regard as the passageway to the two I type steel concrete columns of lower part FRP filling concrete, and reinforcing bar fixing plate 10 is equipped with reinforcing bar jack I all around, and reinforcing bar 12 inserts the inside of the two I type steel concrete columns of FRP from reinforcing bar jack I of reinforcing bar fixing plate 10.
As shown in fig. 5, the beam-column connecting member includes an upper ring plate 13, a lower ring plate 14, a core cylinder 15 and a side plate 16, the diameter of the inner wall of the core cylinder 15 is larger than the diameter of the outer wall of the connecting cylinder 6, the upper end and the lower end of the core cylinder 15 are respectively provided with the upper ring plate 13 and the lower ring plate 14, the peripheries of the round holes of the upper ring plate 13 and the lower ring plate 14 are respectively provided with a steel bar jack ii, and the side plate 16 is respectively vertically connected with the upper ring plate 13, the lower ring plate 14 and the core cylinder 15.
The connecting cylinder 6 penetrates through a core cylinder 15 of the beam column connecting piece and is respectively inserted into a long hole groove 11 of a cross rib in a double I-shaped steel framework 7 of the upper FRP double I-shaped steel concrete column 4 and the lower FRP double I-shaped steel concrete column 5, a steel bar 12 of the upper FRP double I-shaped steel concrete column 4 penetrates through a steel bar jack II of an upper ring plate 13 and is connected with the beam column connecting piece 3 through a nut, and a steel bar 12 of the lower FRP double I-shaped steel concrete column 5 penetrates through a steel bar jack II of a lower ring plate 14 and is connected with the beam column connecting piece 3 through a nut. The flange of the H-shaped steel beam 3 is in lap joint with the upper ring plate and the lower ring plate of the beam column connecting piece 2 through a connecting plate I17 and a connecting plate II 18, and the web of the H-shaped steel beam 3 is in lap joint with the side plate 16 through a connecting plate III 19.
The beam column connecting piece 2, the outer wrapping pipes of the upper FRP double I-shaped steel concrete column 4 and the lower FRP double I-shaped steel concrete column 5, the H-shaped steel beam 3 and the double I-shaped steel framework 7 in the figure 2 are prefabricated in a factory in advance, and only installation is needed on site.
The method for installing the FRP steel reinforced concrete column and steel beam combination node includes the following installation steps, as shown in fig. 6(a) to 6 (f).
Firstly, respectively inserting the double I-shaped steel frameworks 7 into the inner walls of the outer wrapping pipes of the upper FRP double I-shaped steel concrete column 4 and the lower FRP double I-shaped steel concrete column 5, wherein the long hole grooves of the double I-shaped steel frameworks 7 of the upper FRP double I-shaped steel concrete column 4 face downwards, and the long hole grooves of the double I-shaped steel frameworks 7 of the lower FRP double I-shaped steel concrete column 5 face upwards.
And secondly, aligning a steel bar jack II of a lower ring plate 14 of the beam-column connecting piece 2 with a steel bar jack I of a steel bar fixing plate 10 of the lower FRP double I-shaped steel concrete column 5, penetrating a steel bar 12 from the steel bar jack II of the lower ring plate 14 of the beam-column connecting piece 2, sequentially inserting the lower ring plate 14 and the steel bar fixing plate 10, and fixedly connecting the upper end of the steel bar 12 after being screwed by a nut.
And thirdly, the connecting cylinder 6 penetrates through the core cylinder 15 of the beam-column connecting piece, and the connecting cylinder 6 is inserted into the slot hole groove 11 of the double-I-shaped steel framework 7 of the lower FRP double-I-shaped steel concrete column 5.
And fourthly, inserting the upper part of the connecting cylinder 6 into a long hole groove 11 of a double I-shaped steel framework 7 of the upper FRP double I-shaped steel concrete column 4, realizing the connection between the upper FRP double I-shaped steel concrete column 4 and the lower FRP double I-shaped steel concrete column 5 through the connecting cylinder 6, and improving the integrity of the FRP double I-shaped steel concrete column. The reinforcing bar 12 penetrates from reinforcing bar jack II of the last crown plate 13 of beam column connecting piece 2, inserts in proper order crown plate 13 and reinforcing bar fixed plate 10, and the lower extreme of reinforcing bar 12 is by nut screw up back fixed connection.
Fifthly, the upper flange and the lower flange of the H-shaped steel beam 3 are respectively in lap joint with the upper ring plate 13 and the lower ring plate 14 through a connecting plate I17 and a connecting plate II 18, and the web plate of the H-shaped steel beam 3 is in lap joint with the side plate 16 through a connecting plate III 19.
And sixthly, pouring concrete into the FRP double-I-shaped steel concrete column 1 through the opening of the upper FRP double-I-shaped steel concrete column 4, so that the connecting part forms a whole through the occlusion effect of the concrete, and filling rubber materials into gaps among the upper FRP double-I-shaped steel concrete column 4, the beam column connecting piece 2 and the lower FRP double-I-shaped steel concrete column 5 in order to prevent the concrete from overflowing.
The FRP steel reinforced concrete column and steel beam combined node and the installation method provided by the present invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, it is possible to make various improvements and modifications to the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The FRP (fiber reinforce Plastic) concrete column and steel beam combined node is characterized by comprising an FRP double I-shaped steel concrete column (1), a beam column connecting piece (2) and an H-shaped steel beam (3), wherein the FRP double I-shaped steel concrete column (1) comprises an upper FRP double I-shaped steel concrete column (4) and a lower FRP double I-shaped steel concrete column (5), and the upper FRP double I-shaped steel concrete column (4) is connected with the lower FRP double I-shaped steel concrete column (5) through a connecting cylinder (6);
the FRP double-I-shaped steel concrete column (1) comprises an outer wrapping pipe and a double-I-shaped steel skeleton (7) positioned on the inner side of the outer wrapping pipe, wherein the double-I-shaped steel skeleton (7) comprises a cross rib (8), a steel bar fixing plate (10) and inserting plates (9) respectively positioned on four sides, the width of each inserting plate (9) is smaller than the width of the inner wall of the FRP double-I-shaped steel concrete column (1), four rib plates of the cross rib (8) are provided with long hole grooves (11) in the vertical direction, the distance from each long hole groove (11) to the center of the cross rib (8) is equal, the center of the steel bar fixing plate (10) is provided with a round hole, steel bar inserting holes I are formed in the periphery of the steel bar fixing plate, and the steel bar fixing plate (10) is installed on one side of the cross rib with the long hole grooves;
the beam-column connecting piece (2) comprises an upper annular plate (13), a lower annular plate (14), a core cylinder (15) and side plates (16), the diameter of the inner wall of the core cylinder (15) is larger than that of the outer wall of the connecting cylinder (6), the upper end part and the lower end part of the core cylinder (15) are respectively provided with the upper annular plate (13) and the lower annular plate (14), the centers of the upper annular plate (13) and the lower annular plate (14) are provided with round holes, steel bar inserting holes II are formed in the periphery of the round holes, and the side plates (16) are positioned between the upper annular plate (13) and the lower annular plate (14) and are vertically connected with the upper annular plate (13), the lower annular plate (14) and the core cylinder (15);
the steel bar (12) of the upper FRP double I-shaped steel concrete column (4) penetrates through the steel bar jack II of the upper ring plate (13) to be connected with the beam column connecting piece (2), the steel bar (12) of the lower FRP double I-shaped steel concrete column (5) penetrates through the steel bar jack II of the lower ring plate (14) to be connected with the beam column connecting piece (2), the connecting cylinder (6) penetrates through the core cylinder (15) of the beam column connecting piece (2) and is respectively spliced with the cross rib (8) of the double I-shaped steel framework (7) of the upper FRP double I-shaped steel concrete column (4) and the lower FRP double I-shaped steel concrete column (5), the flange of the H-shaped steel beam (3) is in lap joint with the ring plate of the beam column connecting piece (2), and the web of the H-shaped steel beam (3) is in lap joint with the side plate (16).
2. The FRP concrete column and steel beam combined node as claimed in claim 1, wherein the flange of the H-shaped steel beam (3) is overlapped with the ring plate of the beam column connecting piece (2) through a connecting plate I (17) and a connecting plate II (18), and the web plate of the H-shaped steel beam (3) is overlapped with the side plate (16) through a connecting plate III (19).
3. A combined node of FRP concrete column and steel beam according to claim 1, characterized in that the steel bar (12) of the upper FRP double I-type steel concrete column (4) is connected with the upper ring plate (13) through a nut, and the steel bar (12) of the lower FRP double I-type steel concrete column (5) is connected with the lower ring plate (14) through a nut.
4. The FRP concrete column and steel beam combined node as claimed in claim 1, wherein the double I-shaped steel frameworks (7) are inserted into the outer casings of the upper FRP double I-shaped steel concrete column (4) and the lower FRP double I-shaped steel concrete column (5).
5. The FRP concrete column and steel beam combined node as claimed in claim 1, wherein the outer wrapping pipe of the FRP double I-shaped steel concrete column (1) is made of FRP material.
6. The FRP concrete column and steel beam combined node as claimed in claim 1, wherein the top flange of the H-shaped steel beam (3) is connected with the upper ring plate (13), the bottom flange of the H-shaped steel beam (3) is connected with the lower ring plate (14), and the web plate of the H-shaped steel beam (3) is connected with the side plate (16) through bolts.
7. A combined node of FRP concrete column and steel beam according to claim 1, characterized in that the steel bar (12) of FRP double I type steel concrete column (1) is FRP bar.
8. A combined node of FRP concrete column and steel beam according to claim 1, characterized in that the connecting cylinder (6) is inserted into the slot hole groove (11) of the cross rib (8) of the double I-steel framework (7) of the upper FRP double I-steel concrete column (4) and the lower FRP double I-steel concrete column (5), respectively.
9. A method of installing a concrete column and steel beam composite node according to any one of claims 1 to 8, comprising the steps of;
the first step is as follows: inserting the double I-shaped steel frameworks (7) into the inner walls of the outer wrapping pipes of the upper FRP double I-shaped steel concrete column (4) and the lower FRP double I-shaped steel concrete column (5) respectively, wherein a long hole groove (11) of the double I-shaped steel framework (7) of the upper FRP double I-shaped steel concrete column (4) faces downwards, and a long hole groove (11) of the double I-shaped steel framework (7) of the lower FRP double I-shaped steel concrete column (5) faces upwards;
the second step is that: aligning a steel bar jack II of a lower ring plate (14) of a beam column connecting piece (2) with a steel bar jack I of a steel bar fixing plate (10) of a lower FRP double I-type steel concrete column (5), inserting a steel bar (12) into the steel bar jack II of the lower ring plate (14) in sequence, inserting the lower ring plate (14) and the steel bar fixing plate (10) in sequence, and fixedly connecting the upper end of the steel bar (12) after being screwed by a nut;
the third step: the connecting cylinder (6) penetrates through a core cylinder (15) of the beam-column connecting piece (2) and is inserted into a long hole groove (11) of a double-I-shaped steel framework (7) of the lower FRP double-I-shaped steel concrete column (5);
the fourth step: inserting the upper part of a connecting cylinder (6) into a long hole groove (11) of a double I-shaped steel framework (7) of an upper FRP double I-shaped steel concrete column (4), inserting a steel bar (12) into a steel bar inserting hole II of an upper ring plate (13), sequentially inserting the upper ring plate (13) and a steel bar fixing plate (10), and screwing down the lower end of the steel bar (12) by a nut and then fixedly connecting;
the fifth step: the upper flange and the lower flange of the H-shaped steel beam (3) are respectively in lap joint with the upper ring plate (13) and the lower ring plate (14) through a connecting plate I (17) and a connecting plate II (18), and the web plate of the H-shaped steel beam (3) is in lap joint with the side plate (16) through a connecting plate III (19);
and a sixth step: concrete is poured into the FRP double I-shaped steel concrete column (1) through an opening of the upper FRP double I-shaped steel concrete column (4), so that the connection part forms a whole through the occlusion effect of the concrete.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110372051.7A CN113047454B (en) | 2021-04-07 | 2021-04-07 | FRP (fiber reinforced plastic) steel concrete column and steel beam combined node and mounting method |
| PCT/CN2021/103907 WO2022213492A1 (en) | 2021-04-07 | 2021-07-01 | Frp steel concrete column and steel beam combined joint, and installation method therefor |
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| CN202110372051.7A CN113047454B (en) | 2021-04-07 | 2021-04-07 | FRP (fiber reinforced plastic) steel concrete column and steel beam combined node and mounting method |
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| CN113047454A CN113047454A (en) | 2021-06-29 |
| CN113047454B true CN113047454B (en) | 2022-06-21 |
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|---|---|---|---|---|
| CN113047454B (en) * | 2021-04-07 | 2022-06-21 | 青岛理工大学 | FRP (fiber reinforced plastic) steel concrete column and steel beam combined node and mounting method |
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| WO2022213492A1 (en) | 2022-10-13 |
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