CN114775783B - Assembled steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connection node - Google Patents
Assembled steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connection node Download PDFInfo
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- CN114775783B CN114775783B CN202210059732.2A CN202210059732A CN114775783B CN 114775783 B CN114775783 B CN 114775783B CN 202210059732 A CN202210059732 A CN 202210059732A CN 114775783 B CN114775783 B CN 114775783B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 160
- 239000010959 steel Substances 0.000 title claims abstract description 160
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 52
- 239000004567 concrete Substances 0.000 claims abstract description 30
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 6
- 238000013461 design Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
-
- 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
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
-
- 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
Abstract
The invention relates to an assembled steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connecting node, which comprises a steel reinforced concrete column, a PVC-FRP pipe reinforced concrete beam, a node connecting piece, I-shaped steel, a steel bar connector and a high-strength bolt; the node connecting piece is sleeved on the outer side of the column steel in the node area and is connected with the column steel in a counterpoint manner through a high-strength bolt; the I-shaped steel is welded on the outer side of the connecting piece, the I-shaped steel stretches into the PVC-FRP pipe reinforced concrete beam, and the PVC pipe is connected with the upper flange of the I-shaped steel in an aligned manner through a high-strength bolt; the beam longitudinal bars are connected with the node connecting pieces through the reinforcing steel bar connectors. The invention has reasonable structural design and simple structure, connects the steel reinforced concrete column and the PVC-FRP pipe reinforced concrete beam into a whole through the node connecting piece, carries out constraint reinforcement on the node area, does not need to arrange stirrups, can be prefabricated in factories and assembled on site in construction, is quickly assembled, and has the advantages of high bearing capacity, good anti-seismic performance, good durability and the like, and the steel components are cast in the concrete.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to an assembled steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connecting node.
Background
With the development of modern engineering structures to towering, large span and complicacy, the bearing capacity, construction technology and other aspects of traditional reinforced concrete structures can not meet the requirements of the modern engineering structures. In addition, reinforced concrete structures in long service are subject to common phenomena of concrete corrosion and steel rust, which can lead to deterioration of the concrete structure performance and degradation of durability.
The PVC-FRP pipe concrete column is a novel combined column formed by winding FRP on a PVC pipe and pouring concrete into the pipe. The PVC-FRP pipe plays a constraint role on the core concrete, and meanwhile, the PVC-FRP pipe can protect the core concrete from environmental erosion. Compared with the common concrete column, the PVC-FRP pipe concrete column has excellent bearing capacity and durability, and can be applied to engineering structures such as bridge engineering, underground engineering, ocean engineering and the like. However, one of the key problems in popularizing and applying the PVC-FRP pipe concrete column is to solve the problem of connection between the PVC-FRP pipe concrete column and a beam plate member.
The steel tube concrete core column is a combined structure column formed by placing steel tubes in a column reinforcement cage in advance and then pouring concrete. The bearing capacity of the common concrete column can be further improved by arranging the steel pipes in the PVC-FRP pipe concrete column, and the core steel pipes are arranged in the joint areas so as to be convenient to be welded with steel beams or connected with the steel beams through bolts to form combined joints. But the girder steel can block the node district stirrup, and the hole can influence the transmission of girder steel power on the girder steel. In addition, the PVC-FRP pipe is discontinuous in the node area, and the bearing capacity of the node can be weakened. Therefore, how to strengthen the node and ensure good stress performance of the node in a complex stress environment is a problem to be solved urgently.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide an assembled steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connecting node and a method thereof.
In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme:
the connecting node comprises a steel reinforced concrete column, a PVC-FRP pipe reinforced concrete beam, a node connecting piece, I-shaped steel, a steel bar connector and a high-strength bolt, wherein the steel reinforced concrete column comprises column steel, column longitudinal ribs and column stirrups;
the PVC-FRP pipe reinforced concrete beam comprises a PVC-FRP pipe, a beam longitudinal rib and a beam stirrup, wherein the upper surface of the PVC-FRP pipe is connected with an upper flange of the I-shaped steel through a high-strength bolt, the beam longitudinal rib is connected with a node connecting piece through a reinforcing steel connector, and the I-shaped steel and the reinforcing steel connector are welded outside the node connecting piece.
Preferably, the steel reinforced concrete column is not provided with column stirrups in the node area, and the column steel is provided with two rows of parallel equidistant bolt holes in the node area.
Preferably, the node connecting piece comprises a hollow ribbed steel cage, hollow ribbed I-steel and an end plate, wherein the hollow ribbed I-steel is welded inside the hollow ribbed steel cage, the end plate is welded at the end part of the hollow ribbed I-steel, and two rows of equidistant bolt holes are arranged at corresponding positions of the end plate and the column-shaped steel.
Preferably, the column steel and the node connecting piece are connected in an alignment mode through high-strength bolts, and the hollowed ribbed steel cage hoops are arranged outside the column steel.
Preferably, the steel bar connector comprises a steel bar connector and a steel bar connecting sleeve, the steel bar connector is welded on the hollowed ribbed steel cage, threads are arranged inside the steel bar connecting sleeve, one end of the steel bar connecting sleeve is connected with the steel bar connector, and the other end of the steel bar connecting sleeve is connected with the beam longitudinal bars.
Preferably, the I-shaped steel is welded on the hollowed ribbed steel cage, and two rows of equally-spaced bolt holes are formed in the corresponding positions of the upper flange of the I-shaped steel and the upper surface of the PVC-FRP pipe and are connected through high-strength bolts.
Preferably, concrete is poured on the inner side and the outer side of the column steel, the column longitudinal ribs, the node connecting pieces, the I-shaped steel, the steel bar connectors, the beam longitudinal ribs and the beam stirrups to form a steel reinforced concrete column node area-PVC-FRP pipe reinforced concrete beam node.
Preferably, the i-section steel and the steel bar connectors can be configured in four different directions of the node connecting piece according to requirements, and the number of the connecting beam bodies can be one to four respectively.
The beneficial effects are that:
1. the PVC-FRP pipe reinforced concrete beam and the node connecting piece can be prefabricated in a factory, high-strength bolts are adopted for quick assembly and connection on site, the factory degree is high, the construction process is simple, the operation efficiency is improved, and the construction quality is improved.
2. The node connecting piece adopts an integral design, has constraint and reinforcement effects on the concrete in the node area, and improves the ultimate compressive strength of the core concrete in the node area, so that the mechanical property of the novel node is effectively improved, and the bearing capacity and the ductility of the node are increased.
3. The node area steel member comprises node area column steel, node connecting pieces, column longitudinal ribs, PVC-FRP pipe reinforced concrete beam longitudinal ribs, stirrups and the like, and the outer parts of the node area column steel member and the column longitudinal ribs and the stirrups are protected by concrete protection layers or PVC pipes, so that the steel member is effectively prevented from being corroded, and the durability of the structure is remarkably improved.
4. The node connecting piece adopts the hollow ribbed design, so that the contact area of the node connecting piece and concrete is increased, the bonding performance of the node connecting piece and the concrete in the node area is improved, the node is prevented from being invalid due to the damage of the bonding of the concrete and the node connecting piece, and the integrity and the strength of the node are improved.
5. The connection between the steel reinforced concrete column and the PVC-FRP pipe reinforced concrete beam is realized, and the method has important engineering significance.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that 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 section steel concrete column of the present invention;
FIG. 3 is a node elevation of the present invention;
FIG. 4 is a detailed elevation view of a node of the present invention;
FIG. 5 is a node side elevational view of the present invention;
fig. 6 is a detailed view of a node side cross section of the present invention.
The reference numerals in the drawings are as follows:
1-section steel concrete column, 2-PVC-FRP pipe reinforced concrete beam, 21-PVC-FRP pipe, 22-beam longitudinal rib, 23-beam stirrup, 3-node connector, 31-hollow ribbed steel cage, 32-hollow ribbed I-steel, 33-end plate, 4-I-steel, 5-steel bar connector, 51 steel bar connector, 52-steel bar connecting sleeve, 6-high strength bolt, 11-column steel, 12-column longitudinal rib and 13-column stirrup.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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 be within the scope of the invention.
Example 1:
as shown in fig. 1-6, the invention discloses an assembled steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connecting node, which comprises a steel reinforced concrete column 1, a PVC-FRP pipe reinforced concrete beam 2, a node connecting piece 3, I-shaped steel 4, a steel bar connector 5 and a high-strength bolt 6, wherein the steel reinforced concrete column 1 comprises column steel 11, column longitudinal ribs 12 and column hoop ribs 13;
the PVC-FRP pipe reinforced concrete beam 2 comprises a PVC-FRP pipe 21, a beam longitudinal rib 22 and a beam stirrup 23, wherein the upper surface of the PVC-FRP pipe 21 is connected with the upper flange of the I-shaped steel 4 through a high-strength bolt 6, the beam longitudinal rib 22 is connected with the node connecting piece 3 through a reinforced bar connector 5, and the I-shaped steel 4 and the reinforced bar connector 5 are welded outside the node connecting piece 3.
One specific application of this embodiment is: firstly, the longitudinal FRP cloth is adhered to the lower surface of a rectangular PVC pipe by epoxy resin glue, the circumferential FRP cloth is adhered to the outer layer of the longitudinal FRP cloth according to a certain interval according to design requirements, compaction is paid attention to during adhesion, bubbles are prevented from being generated on the surfaces of the FRP cloth and the PVC pipe, and the PVC-FRP pipe is formed through maintenance. The reinforcement cage is placed in the PVC-FRP pipe and extends out of the end part for a certain length as required for connection in the node area.
Example 2:
wherein, shaped steel concrete column 1 does not set up column stirrup 13 in the node district, and column type steel 11 is equipped with two rows of parallel equidistant bolt holes in the node district, its characterized in that: the node connecting piece 3 comprises a hollow ribbed steel cage 31, hollow ribbed I-steel 32 and an end plate 33, wherein the hollow ribbed I-steel 32 is welded inside the hollow ribbed steel cage 31, the end plate 33 is welded at the end part of the hollow ribbed I-steel 32, and two rows of equidistant bolt holes are formed in the corresponding positions of the end plate 33 and the columnar steel 11.
One specific application of this embodiment is: the steel reinforced concrete column joint area is not provided with stirrups, the joint connecting piece is hooped on the outer side of the column steel in the joint area, two rows of equidistant bolt holes are formed in the corresponding positions of the end plate of the joint connecting piece and the column steel according to design requirements, and the joint connecting piece and the column steel are connected into a whole in an alignment mode through high-strength bolts.
Example 3:
the column steel 11 and the node connecting piece 3 are connected in an aligned mode through the high-strength bolts 6, the hollow ribbed steel cage 31 is hooped outside the column steel 11, the steel bar connector 5 comprises a steel bar connector 51 and a steel bar connecting sleeve 52, the steel bar connector 51 is welded to the hollow ribbed steel cage 31, threads are arranged inside the steel bar connecting sleeve 52, one end of the steel bar connecting sleeve is connected with the steel bar connector 51, one end of the steel bar connector is connected with the beam longitudinal rib 22, the I-shaped steel 4 is welded to the hollow ribbed steel cage 31, two rows of equidistant bolt holes are formed in the corresponding positions of the upper flange of the I-shaped steel 4 and the upper surface of the PVC-FRP pipe 21, the column steel 11, the column longitudinal rib 12, the node connecting piece 3, the I-shaped steel 4, the steel connector 5, the beam longitudinal rib 22 and the beam stirrup 23 are all poured with concrete, so that a steel bar concrete column node area-PVC-FRP pipe rib beam node is formed, and the I-shaped steel 4 and the steel connector 5 can be configured in four different directions of the node connecting beam body according to requirements.
The specific application of this embodiment is: the I-shaped steel and the steel bar connectors are welded on the side surfaces of the node connecting pieces, two rows of equidistant bolt holes are formed in the upper surfaces of the I-shaped steel and the PVC-FRP pipes and are connected through high-strength bolts, the node connecting pieces and the beam longitudinal bars are connected through the steel bar connectors, and after the connection of all the components is completed, concrete is poured in situ to form a steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connecting node. .
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, and 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 (4)
1. The connecting node for the assembled steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam is characterized by comprising a steel reinforced concrete column (1), a PVC-FRP pipe reinforced concrete beam (2), a node connecting piece (3), I-shaped steel (4), a steel bar connector (5) and a high-strength bolt (6), wherein the steel reinforced concrete column (1) comprises column steel (11), column longitudinal ribs (12) and column hoop ribs (13);
the PVC-FRP pipe reinforced concrete beam (2) comprises a PVC-FRP pipe (21), a beam longitudinal rib (22) and a beam stirrup (23), wherein the upper surface of the PVC-FRP pipe (21) is connected with the upper flange of the I-shaped steel (4) through a high-strength bolt (6), the beam longitudinal rib (22) is connected with the node connecting piece (3) through a reinforcing steel connector (5), and the I-shaped steel (4) and the reinforcing steel connector (5) are welded outside the node connecting piece (3);
the steel reinforced concrete column (1) is not provided with column stirrups (13) in the node area, and the column steel (11) is provided with two rows of parallel equidistant bolt holes in the node area;
the node connecting piece (3) comprises a hollowed ribbed steel cage (31), hollowed ribbed I-steel (32) and an end plate (33), wherein the hollowed ribbed I-steel (32) is welded inside the hollowed ribbed steel cage (31), the end plate (33) is welded at the end part of the hollowed ribbed I-steel (32), and two rows of equally-spaced bolt holes are formed in the positions, corresponding to the end plate (33) and the column-shaped steel (11);
the column steel (11) and the node connecting piece (3) are connected in an alignment mode through the high-strength bolt (6), and the hollow ribbed steel cage (31) is sleeved on the outside of the column steel (11);
and concrete is poured on the inner side and the outer side of the column-shaped steel (11), the column longitudinal ribs (12), the node connecting piece (3), the I-shaped steel (4), the reinforcing steel bar connector (5), the beam longitudinal ribs (22) and the beam stirrup (23) to form a section steel concrete column node area-PVC-FRP pipe reinforced concrete beam node.
2. The fabricated steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connection node of claim 1, wherein: the steel bar connector (5) comprises a steel bar connector (51) and a steel bar connecting sleeve (52), the steel bar connector (51) is welded on the hollowed ribbed steel cage (31), threads are arranged inside the steel bar connecting sleeve (52), one end of the steel bar connecting sleeve is connected with the steel bar connector (51), and the other end of the steel bar connecting sleeve is connected with the beam longitudinal bar (22).
3. The fabricated steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connection node of claim 1, wherein: the I-shaped steel (4) is welded on the hollowed ribbed steel cage (31), and two rows of equidistant bolt holes are formed in the corresponding positions of the upper flange of the I-shaped steel (4) and the upper surface of the PVC-FRP pipe (21) and are connected through the high-strength bolts (6).
4. The fabricated steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connection node of claim 1, wherein: the I-shaped steel (4) and the steel bar connectors (5) are configured in four different directions of the node connecting piece (3) according to requirements, and the number of the connecting beam bodies is one to four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210059732.2A CN114775783B (en) | 2022-01-19 | 2022-01-19 | Assembled steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connection node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210059732.2A CN114775783B (en) | 2022-01-19 | 2022-01-19 | Assembled steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connection node |
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| Publication Number | Publication Date |
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| CN114775783A CN114775783A (en) | 2022-07-22 |
| CN114775783B true CN114775783B (en) | 2024-03-12 |
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| CN116856554B (en) * | 2023-02-16 | 2024-04-12 | 中交第四公路工程局有限公司 | Supplementary coupling mechanism that consolidates of shaped steel concrete composite structure |
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| JP2006188864A (en) * | 2005-01-05 | 2006-07-20 | Nippon Steel Corp | Joint structure of column and beam |
| CN104863258A (en) * | 2015-05-29 | 2015-08-26 | 重庆大学 | Strengthened steel pipe confined concrete column-reinforced concrete beam frame joint in joint area |
| CN205475736U (en) * | 2016-03-07 | 2016-08-17 | 厦门市样式营造科技有限公司 | Mortise type beam -column connecting joint component and make mould thereof |
| CN109024916A (en) * | 2018-08-07 | 2018-12-18 | 安徽工业大学 | A kind of PVC-FRP pipe binding type steel concrete column-cross node of reinforced beam |
| JP2019206876A (en) * | 2018-05-30 | 2019-12-05 | 清水建設株式会社 | Joint structure of column and beam, and construction method of joint structure of column and beam |
| CN112726819A (en) * | 2020-12-28 | 2021-04-30 | 国网河北省电力有限公司经济技术研究院 | Section steel reinforced assembled reinforced concrete cross joint and construction method |
| CN213418235U (en) * | 2020-09-21 | 2021-06-11 | 华南理工大学 | Prefabricated assembled FRP pipe-concrete-steel pipe combination column |
-
2022
- 2022-01-19 CN CN202210059732.2A patent/CN114775783B/en active Active
Patent Citations (7)
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|---|---|---|---|---|
| JP2006188864A (en) * | 2005-01-05 | 2006-07-20 | Nippon Steel Corp | Joint structure of column and beam |
| CN104863258A (en) * | 2015-05-29 | 2015-08-26 | 重庆大学 | Strengthened steel pipe confined concrete column-reinforced concrete beam frame joint in joint area |
| CN205475736U (en) * | 2016-03-07 | 2016-08-17 | 厦门市样式营造科技有限公司 | Mortise type beam -column connecting joint component and make mould thereof |
| JP2019206876A (en) * | 2018-05-30 | 2019-12-05 | 清水建設株式会社 | Joint structure of column and beam, and construction method of joint structure of column and beam |
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| CN114775783A (en) | 2022-07-22 |
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