CN114541622B - Connection structure of PVC-FRP pipe reinforced concrete column and reinforcement masonry wall - Google Patents
Connection structure of PVC-FRP pipe reinforced concrete column and reinforcement masonry wall Download PDFInfo
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- CN114541622B CN114541622B CN202210153741.8A CN202210153741A CN114541622B CN 114541622 B CN114541622 B CN 114541622B CN 202210153741 A CN202210153741 A CN 202210153741A CN 114541622 B CN114541622 B CN 114541622B
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 54
- 230000002787 reinforcement Effects 0.000 title claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 165
- 239000010959 steel Substances 0.000 claims abstract description 165
- 239000004567 concrete Substances 0.000 claims abstract description 34
- 238000003466 welding Methods 0.000 claims abstract description 15
- 238000009826 distribution Methods 0.000 claims abstract description 12
- 238000013461 design Methods 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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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
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/64—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
- E04B2/14—Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element
- E04B2/24—Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element the walls being characterised by fillings in some of the cavities forming load-bearing pillars or beams
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention relates to the technical field of buildings, in particular to a connecting structure of a PVC-FRP pipe reinforced concrete column and a reinforced masonry wall, wherein the bearing capacity of the whole structure is improved through the constraint effect of a PVC-FRP pipe on the concrete column, and the tensile capacity of a connecting part can be effectively improved by reasonably configuring a prestressed steel ring belt; the constraint effect of the arc-shaped steel plate, the prestressed steel ring belt and the PVC-FRP pipe on the joint can obviously improve the structural ductility, the mutual contact surfaces of all parts are more, the energy consumption capability of the integral structure can be correspondingly improved by relatively increasing friction, the rigidity of the joint of the concrete column and the wall column is effectively improved, the deformation resistance capability of the structure is improved, the reinforced masonry wall is connected with the PVC-FRP pipe reinforced concrete column through the horizontal distribution ribs, welding is not needed, the operation is convenient, flange perforated H-shaped steel and plug connectors can be flexibly arranged according to the masonry number of the wall body and the horizontal distribution ribs of the wall body, and the construction is convenient.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a connecting structure of a PVC-FRP pipe reinforced concrete column and a reinforced masonry wall.
Background
The reinforced concrete structure is the most widely used structure type in the current building field, but the defects of large dead weight, poor crack resistance and the like limit the application of the reinforced concrete structure in large-span and complex structures. The steel pipe concrete structure overcomes some problems existing in the reinforced concrete structure, but the durability problem caused by easy corrosion of the steel pipe limits the application of the steel pipe concrete structure in bridge, ocean and other projects. Therefore, the PVC-FRP pipe reinforced concrete structure has the advantages of high strength, good durability and the like, and has wide engineering application prospect. In order to promote the structure to develop from a component to an integral structure and be applied to practical engineering, the problem of connection between the PVC-FRP pipe reinforced concrete column and the wall needs to be solved.
The common reinforced concrete column can be directly connected with the reinforced masonry wall by arranging tie bars, and the steel tube concrete column can be connected with the reinforced masonry wall in a welding mode with the tie bars. And because the outer surface material property of the PVC-FRP pipe reinforced concrete column is special, the direct anchoring and welding modes are not applicable.
Therefore, in order to solve the above problems, it is necessary to provide an innovative connection structure of the PVC-FRP pipe reinforced concrete column and the wall. The structure can improve the bearing capacity and reduce the construction difficulty on the basis of ensuring the integrity of the column and the wall.
Disclosure of Invention
Aiming at the problems, the invention provides a connecting structure of a PVC-FRP pipe reinforced concrete column and a reinforced masonry wall, and the bearing capacity of the whole structure is improved by the restraining effect of the PVC-FRP pipe on the concrete column, and the tensile capacity of the connecting part can be effectively improved by reasonably configuring a prestressed steel ring belt; the constraint effect of the arc-shaped steel plate, the prestressed steel ring belt and the PVC-FRP pipe on the joint can obviously improve the structural ductility, the mutual contact surfaces of all parts are more, the energy consumption capability of the integral structure can be correspondingly improved by relatively increasing friction, the rigidity of the joint of the concrete column and the wall column is effectively improved, the deformation resistance capability of the structure is improved, the reinforced masonry wall is connected with the PVC-FRP pipe reinforced concrete column through the horizontal distribution ribs, welding is not needed, the operation is convenient, flange perforated H-shaped steel and plug connectors can be flexibly arranged according to the masonry number of the wall body and the horizontal distribution ribs of the wall body, and the construction is convenient.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the connection structure of the PVC-FRP pipe reinforced concrete column and the reinforced masonry wall comprises the PVC-FRP pipe reinforced concrete column, the reinforced masonry wall and a connection member, wherein the PVC-FRP pipe reinforced concrete column comprises a PVC pipe, an FRP strip, column longitudinal ribs, column stirrups, bolts and concrete; the reinforced masonry wall comprises masonry, horizontally distributed steel bars, vertically distributed steel bars and mortar; the connecting component comprises an arc-shaped steel plate, a prestressed steel ring belt, flange open-pore H-shaped steel, a plug connector and concrete;
the horizontally distributed steel bars of the reinforced masonry wall are inserted into the plug-in connectors after being bent, the vertically distributed steel bars penetrate through holes of the flange opening H-shaped steel and the masonry, and the connection part of the flange opening H-shaped steel and the masonry is penetrated by casting concrete.
Preferably, the FRP strip is wound outside the PVC pipe in a circumferential direction to form a PVC-FRP pipe, N b holes are uniformly preset on the two longitudinal side surfaces of the PVC pipe respectively, the positions of the holes avoid the pasting position of the FRP strip, and the diameters of the holes are larger than d mm so as to meet the requirement that bolts penetrate into the PVC pipe.
Preferably, the number of the bolts is consistent with the number and the diameter of the preset holes on the side face of the PVC-FRP pipe, the length of the bolts is larger than the diameter of the PVC-FRP pipe, the bolts are inserted into the PVC pipe before concrete pouring after column longitudinal ribs and column hoop ribs are arranged in the PVC-FRP pipe, and finally are integrated with the reinforced concrete column of the PVC-FRP pipe, and the number and the diameter of the bolts are calculated according to the following formula:
Wherein f b and f respectively represent the shear strength design value of the bolts and the compressive strength design value of the reinforced masonry wall, N b and d respectively represent the number and the diameter of the set bolts, a b is the utilization factor of the bolts, and the bolts are required to be obtained through relevant test.
Preferably, the arc-shaped steel plate is as high as the reinforced concrete column of the PVC-FRP pipe, and N b holes with the diameter slightly larger than d mm are uniformly formed in the central line of the side surface of the arc-shaped steel plate, the arc-shaped steel plate is mechanically connected with the PVC-FRP pipe through a perforation bolt, and in order to ensure that the arc-shaped steel plate can be used for half wrapping the PVC-FRP pipe outside, the radian and the arc length of the arc-shaped steel plate are as follows:
R＝2nπ；
I＝Rr；
wherein R and I respectively represent the radian and the arc length of the arc-shaped steel plate, R is the outer radius of the PVC pipe, n is a constant, and when the arc-shaped steel plate is connected by a straight wall column, n=1/4; when the wall posts are connected in an L-shaped mode, n=1/2; when connected in a "T-shaped" wall stud, n=3/4; when connected in a "cross" wall stud, n=1.
Preferably, the width of the prestress steel ring belt is the same as the width of the FRP strip, the thickness of the prestress steel ring belt is t millimeters, the number of the prestress steel ring belt is N S, the position of the prestress steel ring belt corresponds to the FRP strip, the welding position of the flange open-pore H-shaped steel and the plug connector is avoided, and the thickness and the number of the prestress steel ring belt are valued according to the following formula:
asNstbfs≥V
wherein b and f s respectively represent the width and tensile strength of the prestressed steel ring belt, V represents the shear design value of the reinforced masonry wall, and a s represents the utilization coefficient of the prestressed steel ring belt, which is required to be obtained through a related test.
Preferably, the flange perforated H-shaped steel is formed by processing H-shaped steel, the height of the H-shaped steel is not more than 300mm, holes are respectively formed in the left flange and the right flange of the H-shaped steel, the positions of the holes are symmetrical with respect to a web plate, the sizes of the holes are similar to those of the holes of a masonry, one side of the H-shaped steel in the length direction is cut into an arc shape of an outer-covered arc-shaped steel plate, and the side of the H-shaped steel is connected with the arc-shaped steel plate in a welding mode.
Preferably, the flange open H-section steel is longitudinally arranged along the PVC-FRP pipe reinforced concrete column, and the number and the positions of the flange open H-section steel are determined according to the number and the positions of the reinforced masonry walls "lead.
Preferably, the connectors are connected with the arc-shaped steel plates through welding, the size of insertion holes of the connectors can meet the requirement that the bending parts of the horizontally distributed steel bars are inserted, and the number and the positions of the connectors are determined according to the arrangement of the horizontally distributed steel bars.
Preferably, the connection part of the flange opening H-shaped steel and the reinforced masonry wall is required to be penetrated through with casting concrete, and the flange opening H-shaped steel is connected with the vertical distribution bars and the horizontal distribution bars to form a reinforced concrete structure.
By adopting the technical scheme, the invention has the beneficial effects that:
In the connection structure of the PVC-FRP pipe reinforced concrete column and the reinforced masonry wall, the arc-shaped steel plate is connected with the PVC-FRP pipe reinforced concrete column through the perforated bolts and the prestressed steel ring belt, the arc-shaped steel plate can bear force together with the PVC-FRP pipe reinforced concrete column under the action of vertical load, and the bolt anchoring measures can improve the local buckling phenomenon of the PVC-FRP pipe, so that the PVC-FRP pipe has the constraint effect on the concrete column, and the bearing capacity of the whole structure is further improved; under the action of horizontal load, the connection part of the PVC-FRP pipe reinforced concrete column and the arc-shaped steel plate is mainly stressed by a prestress steel ring belt, and the tensile capacity of the connection part can be effectively improved by reasonably configuring the prestress steel ring belt; under the action of low-cycle repeated load, the arc-shaped steel plates, bolts, the prestressed steel ring belt and the PVC-FRP pipe reinforced concrete column at the joint are stressed together, the constraint action of the arc-shaped steel plates, the prestressed steel ring belt and the PVC-FRP pipe on the joint can obviously improve the structural ductility, the mutual contact surfaces of all parts are more, and the energy consumption capacity of the whole structure can be correspondingly improved due to the relative increase of friction;
In the connection structure of the PVC-FRP pipe reinforced concrete column and the reinforced masonry wall, the arc-shaped steel plate, the prestressed steel ring belt, the PVC-FRP pipe and the flange open-pore H-shaped steel can effectively improve the rigidity of the connection part of the concrete column and the wall column, so that the deformation resistance of the structure is improved;
the reinforced masonry wall is connected with the PVC-FRP pipe reinforced concrete column through the horizontal distribution ribs, welding is not needed, and compared with the existing anchoring technology, the reinforced masonry wall is more convenient to operate;
according to the invention, the wing edge perforated H-shaped steel and the connectors can be flexibly arranged according to the number of the masonry skin of the wall body and the arrangement of the horizontal distribution ribs of the wall body, so that the construction is convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only of the present invention, protecting some embodiments, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a general block diagram of the present invention;
FIG. 2 is a cross-sectional view of a connection between a reinforced concrete column of a PVC-FRP pipe and a reinforced masonry wall of the present invention;
FIG. 3 is a schematic structural view of the reinforced concrete column of the PVC-FRP pipe;
FIG. 4 is a schematic view of the structure of the reinforced masonry wall of the present invention;
FIG. 5 is a schematic view of the structure of the connecting member of the present invention;
FIG. 6 is a schematic view of the structure of the flange open-pore H-section steel of the present invention;
FIG. 7 is a schematic view of the connection of the flange open-pore H-beam and the plug with the arc-shaped steel plate according to the present invention;
FIG. 8 is a schematic diagram showing the connection of a PVC-FRP pipe reinforced concrete column and an arc-shaped steel plate;
FIG. 9 is a schematic diagram showing the connection of a PVC-FRP pipe reinforced concrete column and a reinforced masonry wall of the present invention.
In the figure: 1. PVC-FRP pipe reinforced concrete column; 2. reinforced masonry wall; 3. a connecting member; 4. a PVC pipe; 5. FRP strips; 6. column longitudinal ribs; 7. column stirrups; 8. a bolt; 9. concrete; 10. a masonry; 11. horizontally distributing reinforcing steel bars; 12. vertically distributing reinforcing steel bars; 13. mortar; 14. arc-shaped steel plates; 15. a pre-stressed steel belt; 16. flange open-pore H-shaped steel; 17. a plug-in component.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
1-9, A connecting structure of a PVC-FRP pipe reinforced concrete column and a reinforced masonry wall comprises a PVC-FRP pipe reinforced concrete column 1, a reinforced masonry wall 2 and a connecting member 3, wherein the PVC-FRP pipe reinforced concrete column 1 comprises a PVC pipe 4, an FRP strip 5, column longitudinal ribs 6, column hoop ribs 7, bolts 8 and concrete 9; the reinforced masonry wall 2 comprises masonry 10, horizontally distributed steel bars 11, vertically distributed steel bars 12 and mortar 13; the connecting member 3 comprises an arc-shaped steel plate 14, a prestress steel ring belt 15, flange open-pore H-shaped steel 16, a plug connector 17 and concrete 9;
The horizontally distributed steel bars 11 of the reinforced masonry wall 2 are bent and then inserted into the connectors 17, the vertically distributed steel bars 12 penetrate through holes of the flange perforated H-shaped steel 16 and the masonry 10, and the connection parts of the flange perforated H-shaped steel 16 and the masonry 10 are penetrated through with the poured concrete 9.
FRP strip 5 twines outside PVC pipe 4 in the circumferential direction, forms PVC-FRP pipe, and PVC pipe 4 vertical both sides face is respectively evenly to predetermine N b holes, and the hole position avoid FRP strip 5 to paste the position, and hole diameter is greater than d millimeter to satisfy bolt 8 and penetrate in the PVC pipe 4.
The number of the bolts 8 is consistent with the number and the diameter of the preset holes on the side face of the PVC-FRP pipe, the length of the bolts 8 is larger than the diameter of the PVC-FRP pipe, the bolts 8 are inserted into the PVC pipe 4 before casting the concrete 9 after the column longitudinal ribs 6 and the column hoop ribs 7 are placed in the PVC-FRP pipe, the bolts and the PVC-FRP pipe reinforced concrete column 1 are finally integrated, and the number and the diameter of the bolts 8 are valued according to the following formula:
Wherein f b and f respectively represent the shear strength design value of the bolts 8 and the compressive strength design value of the reinforced masonry wall 2, N b and d respectively represent the number and the diameter of the set bolts 8, and a b is the utilization factor reduction coefficient of the bolts 8, and the bolts are required to be tested through related tests.
The arc-shaped steel plate 14 is equal to the PVC-FRP pipe reinforced concrete column 1 in height, N b holes with the diameter slightly larger than d millimeters are uniformly formed in the center line of the side face of the arc-shaped steel plate 14, the arc-shaped steel plate 14 is mechanically connected with the PVC-FRP pipe through the perforation bolt 8, and in order to ensure that the arc-shaped steel plate 14 can be used for half wrapping the PVC-FRP pipe outside, the radian and the arc length of the arc-shaped steel plate are taken according to the following formula:
R＝2nπ；
I＝Rr；
Wherein R and I respectively represent the radian and the arc length of the arc-shaped steel plate, R is the outer radius of the PVC pipe 4, n is a constant, and n=1/4 when the wall posts are connected in a straight shape; when the wall posts are connected in an L-shaped mode, n=1/2; when connected in a "T-shaped" wall stud, n=3/4; when connected in a "cross" wall stud, n=1.
The width of the prestress steel ring belt 15 is the same as that of the FRP strip 5, the thickness of the prestress steel ring belt 15 is t millimeters, the number of the prestress steel ring belts is N S, the position of the prestress steel ring belt 15 corresponds to the FRP strip 5, the welding position of the flange opening H-shaped steel 16 and the plug connector 17 is avoided, and the thickness and the number of the prestress steel ring belt 15 are calculated according to the following formula:
asNstbfs≥V
Wherein b and f s respectively represent the width and tensile strength of the prestressed steel endless belt 15, V represents the shear design value of the reinforced masonry wall 2, and a s represents the utilization coefficient of the prestressed steel endless belt 15, which is required to be obtained through a related test.
The flange opening H-shaped steel 16 is formed by processing H-shaped steel, the height of the H-shaped steel is not more than 300mm, holes are respectively formed in the left flange and the right flange of the H-shaped steel, the positions of the holes are symmetrical with respect to a web plate, the sizes of the holes are similar to those of the holes of the masonry 10, one side of the H-shaped steel in the length direction is cut into an arc shape of an outer-covered arc-shaped steel plate 14, and the side is connected with the arc-shaped steel plate 14 in a welding mode.
The flange opening H-shaped steel 16 is longitudinally arranged along the PVC-FRP pipe reinforced concrete column 1, and the number and the positions of the flange opening H-shaped steel 16 are determined according to the number and the positions of the reinforced masonry walls 2 "lead.
The connectors 17 are connected with the arc-shaped steel plates 14 through welding, the size of insertion holes of the connectors 17 can meet the requirement that the bent parts of the horizontal distribution steel bars 11 are inserted, and the number and the positions of the connectors 17 are determined according to the arrangement of the horizontal distribution steel bars 11.
The connection part of the flange opening H-shaped steel 16 and the reinforced masonry wall 2 is required to be penetrated through with the poured concrete 9, and the flange opening H-shaped steel 16, the vertical distributing ribs 12 and the horizontal distributing ribs 11 form reinforced concrete structure connection.
The method comprises the following specific implementation steps:
1) The manufacturing of the reinforced concrete column 1 of the PVC-FRP pipe comprises the steps of manufacturing the PVC-FRP pipe and manufacturing reinforced concrete, firstly cutting a PVC pipe 4 with the same length as the column, perforating corresponding positions of the PVC pipe 4 according to the required number and the diameter of bolts 8, cutting a plurality of FRP strips 5 conforming to the designed width, then fixing a line on the PVC pipe 4 to mark the positions of the FRP strips 5 so as to determine the pasting positions of the FRP strips 5, winding the FRP strips 5 outside the PVC pipe 4 in a circumferential direction according to a positioning line after the FRP strips are soaked in epoxy resin glue, carrying out reinforced concrete manufacturing in the process of waiting for the complete solidification of the glue, binding column longitudinal ribs 6 and column hoop ribs 7 into reinforcement cages, erecting the PVC-FRP pipe, then putting the bound reinforcement cages into the PVC-FRP pipe, penetrating the bolts 8 into the PVC-FRP pipe, and finally pouring concrete 9 into the PVC-FRP pipe after the assembled structure is shown in the figure 3;
2) The manufacturing of the reinforced masonry wall 2, wherein the end parts of the horizontally distributed steel bars 11 are vertically bent by 90 degrees, as shown in fig. 4, the vertically distributed steel bars 12 close to the column side are rearranged when reaching the installation site;
3) The manufacturing of the connecting member 3 is carried out according to the characteristics of the PVC-FRP pipe reinforced concrete column 1 and the reinforced masonry wall 2, and the concrete structure is shown in figure 5;
The left flange and the right flange of the H-shaped steel are respectively provided with a hole which is symmetrical with a web plate, the size of each hole is enough to pass through the vertically distributed steel bars 12, one side of the H-shaped steel in the length direction is cut into an arc shape which meets the requirements to form flange opening H-shaped steel 16, as shown in figure 6, the positions of the concave parts of the horse teeth arranged corresponding to the reinforced masonry wall 2 and the positions of the horizontally distributed steel bars 11 are respectively welded at the positions corresponding to the arc-shaped steel plates 14, and the holes of the flange opening H-shaped steel 16 and the plug connector 17 are ensured to be vertically upwards during welding, and the welded structure is shown in figure 7;
4) The PVC-FRP pipe concrete column 1 is connected with the connecting member 3, the arc-shaped steel plate 14 is connected with the PVC-FRP pipe concrete column 1 through the bolt 8, the prestress steel ring belt 15 is tightly wound outside the arc-shaped steel plate 14 and the PVC-FRP pipe concrete column 1 through the bundling machine, and the reinforced structure is shown in figure 8;
5) The PVC-FRP pipe concrete column 1 is connected with the reinforced masonry wall 2, the H-shaped steel 16 with the flange open holes is aligned with "lead positions of the reinforced masonry wall 2, then the bending sections of the horizontally distributed steel bars 11 are sequentially inserted into the connectors 17, then the vertically distributed steel bars 12 are inserted into flange holes of the masonry 10 and the H-shaped steel, the concrete connection structure is shown in figure 9, and finally concrete 9 is poured between the masonry 10 and the H-shaped steel, so that the connection between the PVC-FRP pipe reinforced concrete column 1 and the reinforced masonry wall 2 is completed.
In the description herein, reference to the terms "one embodiment," "example," "specific example," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (3)
1. The utility model provides a connection structure of PVC-FRP pipe reinforced concrete column and reinforcement brickwork wall, includes PVC-FRP pipe reinforced concrete column (1), reinforcement brickwork wall (2) and connecting element (3), its characterized in that: the PVC-FRP pipe reinforced concrete column (1) comprises a PVC pipe (4), an FRP strip (5), column longitudinal ribs (6), column hoop ribs (7), bolts (8) and concrete (9); the reinforced masonry wall (2) comprises masonry (10), horizontally distributed steel bars (11), vertically distributed steel bars (12) and mortar (13); the connecting component (3) comprises an arc-shaped steel plate (14), a prestress steel ring belt (15), flange open-pore H-shaped steel (16), a plug connector (17) and concrete (9);
The horizontally distributed steel bars (11) of the reinforced masonry wall (2) are inserted into the plug-in connectors (17) after being bent, the vertically distributed steel bars (12) penetrate through holes of flange perforated H-shaped steel (16) and masonry (10), and the joint of the flange perforated H-shaped steel (16) and the masonry (10) is communicated with casting concrete (9);
The FRP strips (5) are annularly wound outside the PVC pipe (4) to form a PVC-FRP pipe, N b holes are uniformly preset on the two longitudinal side surfaces of the PVC pipe (4), the positions of the holes avoid the pasting position of the FRP strips (5), and the diameters of the holes are larger than d mm so as to meet the condition that bolts (8) penetrate into the PVC pipe (4);
The number of the bolts (8) is consistent with the number and the diameter of the preset holes on the side face of the PVC-FRP pipe, the length of each bolt (8) is larger than the diameter of the PVC-FRP pipe, the bolts (8) are inserted into the PVC-FRP pipe before casting the concrete (9) after the column longitudinal ribs (6) and the column hoop ribs (7) are placed in the PVC-FRP pipe, the bolts and the diameters of the bolts (8) are integrated with the PVC-FRP pipe steel bar concrete column (1) finally, and the number and the diameters of the bolts (8) are valued according to the following formula:
Wherein f b and f respectively represent the shear strength design value of the bolt (8) and the compressive strength design value of the reinforced masonry wall (2), N b and d respectively represent the number and the diameter of the set bolts (8), a b is the utilization factor reduction coefficient of the bolts (8) and is required to be obtained through a related test;
The arc-shaped steel plate (14) is equal to the PVC-FRP pipe reinforced concrete column (1) in height, N b holes with diameters slightly larger than d millimeters are uniformly formed in the side central line of the arc-shaped steel plate (14), the arc-shaped steel plate (14) is mechanically connected with the PVC-FRP pipe through a perforation bolt (8), and in order to ensure that the arc-shaped steel plate (14) can be covered with the PVC-FRP pipe at the outer part, the radian and the arc length of the arc-shaped steel plate are taken according to the following formula:
R＝2nπ
I＝Rr
wherein R and I respectively represent the radian and the arc length of the arc-shaped steel plate, R is the outer radius of the PVC pipe (4), n is a constant, and n=1/4 when the wall posts are connected in a straight shape; when the wall posts are connected in an L-shaped mode, n=1/2; when connected in a "T-shaped" wall stud, n=3/4; when the wall posts are connected in a cross shape, n=1;
The flange opening H-shaped steel (16) is formed by processing H-shaped steel, the height of the H-shaped steel is not more than 300mm, holes are formed in the left flange and the right flange of the H-shaped steel respectively, the positions of the holes are symmetrical relative to a web plate, the sizes of the holes are similar to those of the holes of a masonry (10), one side of the H-shaped steel in the length direction is cut into an arc shape of an outer-covered arc-shaped steel plate (14), and the side is connected with the arc-shaped steel plate (14) in a welding mode;
The flange opening H-shaped steel (16) is longitudinally arranged along the PVC-FRP pipe reinforced concrete column (1), and the number and the positions of the flange opening H-shaped steel (16) are determined according to the number and the positions of the reinforced masonry walls (2) "lead;
The connection part of the flange opening H-shaped steel (16) and the reinforced masonry wall (2) is required to be penetrated by casting concrete (9), and the flange opening H-shaped steel (16) is connected with the vertical distribution steel bars (12) and the horizontal distribution steel bars (11) to form a reinforced concrete structure.
2. The connection structure of a PVC-FRP pipe reinforced concrete column and a reinforced masonry wall according to claim 1, wherein: the width of the prestress steel ring belt (15) is the same as that of the FRP strip (5), the thickness of the prestress steel ring belt (15) is t millimeters, the number of the prestress steel ring belts is N S, the position of the prestress steel ring belt (15) corresponds to the FRP strip (5), the welding position of flange open-pore H-shaped steel (16) and the plug connector (17) is avoided, and the thickness and the number of the prestress steel ring belt (15) are valued according to the following formula:
asNstbfs≥V
Wherein b and f s respectively represent the width and the tensile strength of the prestressed steel endless belt (15), V represents the shear design value of the reinforced masonry wall (2), and a s represents the utilization coefficient of the prestressed steel endless belt (15) and is obtained through relevant test.
3. The connection structure of a PVC-FRP pipe reinforced concrete column and a reinforced masonry wall according to claim 1, wherein: the connectors (17) are connected with the arc-shaped steel plates (14) through welding, the size of insertion holes of the connectors (17) can meet the requirement that the bending parts of the horizontally distributed steel bars (11) are inserted, and the number and the positions of the connectors (17) are determined according to the arrangement of the horizontally distributed steel bars (11).
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