CN114775783A - Assembled type steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connection node - Google Patents
Assembled type steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connection node Download PDFInfo
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- CN114775783A CN114775783A CN202210059732.2A CN202210059732A CN114775783A CN 114775783 A CN114775783 A CN 114775783A CN 202210059732 A CN202210059732 A CN 202210059732A CN 114775783 A CN114775783 A CN 114775783A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 166
- 239000010959 steel Substances 0.000 title claims abstract description 166
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 43
- 239000004567 concrete Substances 0.000 claims abstract description 53
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- 229920002554 vinyl polymer Polymers 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005056 compaction 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
- 230000000694 effects Effects 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
- 239000010410 layer Substances 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
- 210000003205 muscle Anatomy 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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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
- E04B1/185—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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention relates to an assembly type section steel concrete column-PVC-FRP (polyvinyl chloride-fiber reinforce plastic) pipe reinforced concrete beam connecting node, which comprises a section steel 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 outer side of the column section steel in the node area of the node connecting piece hoop is in contraposition connection with the column section steel through a high-strength bolt; the I-shaped steel is welded on the outer side of the connecting piece, the I-shaped steel extends into the reinforced concrete beam of the PVC-FRP pipe, and the PVC pipe and the upper flange of the I-shaped steel are connected in a contraposition mode through the high-strength bolt; the beam longitudinal rib is connected with the node connecting piece through a steel bar connector. The steel reinforced concrete column and the PVC-FRP pipe reinforced concrete beam are connected into a whole through the node connecting piece, the node area is restrained and reinforced, stirrups do not need to be arranged, all components can be prefabricated in a factory, the components can be assembled on site in construction and assembled quickly, the steel components are poured into the concrete, and the steel reinforced concrete column has the advantages of high bearing capacity, good anti-seismic performance, good durability and the like.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to an assembly type steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connecting node.
Background
With the development of modern engineering structures toward high rise, large span and complexity, the bearing capacity, construction technology and other aspects of the traditional reinforced concrete structure can not meet the requirements of the modern engineering structures. In addition, the phenomena of concrete corrosion and steel bar corrosion are common in the reinforced concrete structure which is in service for a long time, and the problems can cause the performance deterioration and the durability reduction of the concrete structure.
The PVC-FRP pipe concrete column is a novel combined column formed by winding FRP on a PVC pipe and pouring concrete into the PVC pipe. The PVC-FRP pipe plays a role in restraining the core concrete, and meanwhile, the PVC-FRP pipe can protect the core concrete from environmental erosion. Compared with common concrete columns, the PVC-FRP pipe concrete column has superior 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 connection problem between the PVC-FRP pipe concrete column and a beam slab 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 steel pipes are arranged in the PVC-FRP pipe concrete column, so that the bearing capacity of the common concrete column can be further improved, and the core steel pipes are placed in the node area to be convenient for being welded or connected with the steel beams through bolts to form a combined node. However, the steel beam can block the stirrup in the joint area, and the holes formed in the steel beam can influence the force transmission of the steel beam. In addition, since the PVC-FRP pipe is discontinuous in the node area, the bearing capacity of the node can be weakened. Therefore, how to strengthen the node and ensure the good stress performance of the node in a complex stress environment is an urgent problem to be solved.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a connecting node of an assembled type steel reinforced concrete column, namely a PVC-FRP pipe reinforced concrete beam and a method thereof.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a connection node of an assembled type steel concrete column-PVC-FRP (polyvinyl chloride-fiber reinforce plastic) pipe reinforced concrete beam comprises a steel concrete column, a PVC-FRP pipe reinforced concrete beam, a node connecting piece, I-shaped steel, a steel connector and a high-strength bolt, wherein the steel concrete column comprises column shaped 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, the upper surface of the PVC-FRP pipe is connected with the upper flange of the I-shaped steel through a high-strength bolt, the beam longitudinal rib is connected with the node connecting piece through a steel bar connector, and the I-shaped steel and the steel bar connector are welded outside the node connecting piece.
Preferably, the shaped steel concrete column does not have a column stirrup in the node area, and the column shaped 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, the hollow ribbed I-steel is welded inside the hollow ribbed steel cage, the end plate is welded at the end of the hollow ribbed I-steel, and two rows of bolt holes at equal intervals are arranged at the corresponding positions of the end plate and the columnar steel.
Preferably, the column steel and the node connecting piece are connected in an alignment mode through high-strength bolts, and the hollow ribbed steel cage is sleeved outside the column steel.
Preferably, the steel bar connector includes steel bar connector and steel bar connection sleeve, the steel bar connector welds in fretwork ribbed steel cage, the inside screw thread that is equipped with of steel bar connection sleeve, one end and steel bar connector are connected, and one end is indulged the muscle with the roof beam and is connected.
Preferably, the I-shaped steel is welded to the hollow ribbed steel cage, and two rows of bolt holes at equal intervals are arranged at 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 section steel, the column longitudinal rib, the joint connecting piece, the I-shaped steel, the steel bar connector, the beam longitudinal rib and the beam stirrup to form a section steel concrete column joint area-PVC-FRP pipe reinforced concrete beam joint.
Preferably, the i-shaped steel and the steel bar connector can be arranged 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.
Has the advantages that:
1. PVC-FRP pipe reinforced concrete roof beam and node connecting piece all can prefabricated by the mill, adopt high strength bolt rapid Assembly to connect on the scene, and the batch production degree is high, and construction process is simple, improves the operating efficiency, promotes construction quality.
2. The node connecting piece adopts the monolithic design, has the restraint reinforcing action to node district concrete, has improved the ultimate compressive strength of node district core concrete to effectively improve the mechanical properties of this novel node, increased the bearing capacity and the ductility of node.
3. The node area steel member comprises a node area column profile steel, a node connecting point, a column longitudinal rib, a PVC-FRP pipe reinforced concrete beam longitudinal rib, a stirrup and the like, and concrete protective layers or PVC pipe protection are arranged outside the node area column profile steel, the node connecting point, the column longitudinal rib, the PVC-FRP pipe reinforced concrete beam longitudinal rib, the stirrup and the like, so that the steel member is effectively prevented from being rusted, and the durability of the structure is obviously improved.
4. The node connecting piece adopts the design of fretwork area of ribbing, has increased the area of contact of node connecting piece with the concrete, has improved the adhesive property of node connecting piece and nodal region concrete, prevents that the node from taking place to destroy and becoming invalid because of the bonding of concrete and node connecting piece, has improved the wholeness and the intensity of node.
5. The connection of 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 that embodies the invention to achieve all of the above advantages simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a general block diagram of the present invention;
FIG. 2 is a sectional view of a steel reinforced concrete column of the present invention;
FIG. 3 is a node elevation of the present invention;
FIG. 4 is a detail elevation cross-section of the node of the present invention;
FIG. 5 is a side elevational view of the node of the present invention;
FIG. 6 is a side cross-sectional detail view of the node of the present invention.
The reference numbers in the figures are as follows:
the concrete beam comprises 1-section steel concrete columns, 2-PVC-FRP pipe reinforced concrete beams, 21-PVC-FRP pipes, 22-beam longitudinal reinforcements, 23-beam stirrups, 3-node connecting pieces, 31-hollow ribbed steel cages, 32-hollow ribbed I-shaped steels, 33-end plates, 4-I-shaped steels, 5-steel bar connectors, 51 steel bar connectors, 52-steel bar connecting sleeves, 6-high-strength bolts, 11-column section steels, 12-column longitudinal reinforcements and 13-column stirrups.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1-6, the invention is a connection node of an assembled type steel concrete column-PVC-FRP pipe reinforced concrete beam, comprising a steel concrete column 1, a PVC-FRP pipe reinforced concrete beam 2, a node connecting member 3, an i-shaped steel 4, a steel bar connector 5 and a high-strength bolt 6, wherein the steel concrete column 1 comprises column steel 11, column longitudinal bars 12 and column hooping bars 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, 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 steel bar connector 5, and the I-shaped steel 4 and the steel bar connector 5 are welded outside the node connecting piece 3.
One specific application of this embodiment is: firstly, longitudinal FRP cloth is pasted on the lower surface of a rectangular PVC pipe through epoxy resin glue, annular FRP cloth is pasted on the outer layer of the longitudinal FRP cloth according to a certain distance according to design requirements, compaction is noticed during pasting, bubbles generated on the surfaces of the FRP cloth and the PVC pipe are avoided, 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 to be used for connection of the node area.
Example 2:
wherein, shaped steel concrete column 1 does not set up post stirrup 13 in the node district, and column 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, the hollow ribbed I-steel 32 is welded inside the hollow ribbed steel cage 31, the end plate 33 is welded at the end of the hollow ribbed I-steel 32, and two rows of bolt holes at equal intervals are arranged at the corresponding positions of the end plate 33 and the columnar steel 11.
One specific application of this embodiment is: the structural steel concrete column node area is not provided with a stirrup, the node connecting piece is hooped outside the column-shaped steel in the node area, two rows of bolt holes with equal intervals are arranged at the corresponding positions of the end plate and the column-shaped steel of the node connecting piece according to the design requirement, and the end plate and the column-shaped steel of the node connecting piece are aligned and connected into a whole through high-strength bolts.
Example 3:
wherein, the column steel 11 and the node connecting piece 3 are connected by the high-strength bolt 6, the hollow ribbed steel cage 31 is sleeved 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 on the hollow ribbed steel cage 31, the steel bar connecting sleeve 52 is internally provided with screw threads, one end is connected with the steel bar connector 51, the other end is connected with the beam longitudinal rib 22, the I-shaped steel 4 is welded on the hollow ribbed steel cage 31, the upper flange of the I-shaped steel 4 and the upper surface of the PVC-FRP pipe 21 are correspondingly provided with two rows of bolt holes with equal intervals and connected by the high-strength bolt 6, the column steel 11, the column longitudinal rib 12, the node connecting piece 3, the I-shaped steel 4, the steel bar connector 5, the beam longitudinal rib 22 and the beam stirrup 23 are all cast with concrete on the inner side and the outer side to form a node area of the section steel concrete column-PVC-FRP pipe reinforced concrete beam node, the i-shaped steel 4 and the steel bar connector 5 can be arranged in four different directions of the node connecting piece 3 according to requirements, and the number of the connecting beam bodies can be one to four respectively.
The specific application of this embodiment is: the I-shaped steel and the steel bar connector are welded on the side face of the node connecting piece, two rows of bolt holes with equal intervals are arranged on the upper surface of the I-shaped steel and the PVC-FRP pipe and are connected through high-strength bolts, the node connecting piece and the beam longitudinal rib are connected through the steel bar connector, and after the connection of all the components is completed, concrete is poured in situ to form the steel concrete column-PVC-FRP pipe reinforced concrete beam connecting node. .
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean 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, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 to be illustrative only. The preferred embodiments have not been described in detail to avoid obscuring the description of the invention in its specific form, and it is to be understood that many modifications and variations are possible in light of the teaching of this specification. 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 utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The assembled type section steel concrete column-PVC-FRP pipe reinforced concrete beam connecting node is characterized by comprising a section steel 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 section steel concrete column (1) comprises column steel (11), column longitudinal ribs (12) and column hooping 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 steel bar connector (5), and the I-shaped steel (4) and the steel bar connector (5) are welded outside the node connecting piece (3).
2. The fabricated type steel concrete column-PVC-FRP pipe reinforced concrete beam connection node as claimed in claim 1, wherein: the section steel concrete column (1) is not provided with column stirrups (13) in a node area, and the column section steel (11) is provided with two rows of parallel bolt holes at equal intervals in the node area.
3. The fabricated type steel concrete column-PVC-FRP pipe reinforced concrete beam connection node as claimed in claim 1, wherein: node connecting piece (3) are including fretwork ribbed steel cage (31), fretwork ribbed I-steel (32) and end plate (33), fretwork ribbed I-steel (32) weld inside fretwork ribbed steel cage (31), and end plate (33) weld in fretwork ribbed I-steel (32) tip, end plate (33) and columnar steel (11) correspond the position and are equipped with two rows of equidistant bolt holes.
4. The fabricated type steel concrete column-PVC-FRP pipe reinforced concrete beam connection node as claimed in claim 1, wherein: the column steel (11) and the node connecting piece (3) are connected in an aligning mode through high-strength bolts (6), and the hollow ribbed steel cage (31) is sleeved outside the column steel (11).
5. The connection node of the fabricated steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam as claimed in claim 1, wherein: reinforcing bar connector (5) include steel bar connector (51) and steel bar connection sleeve (52), steel bar connector (51) weld in fretwork ribbed steel cage (31), steel bar connection sleeve (52) inside is equipped with the screw thread, and one end is connected with steel bar connector (51), and one end is connected with roof beam longitudinal bar (22).
6. The fabricated type steel concrete column-PVC-FRP pipe reinforced concrete beam connection node as claimed in claim 1, wherein: the I-shaped steel (4) is welded to the hollow ribbed steel cage (31), two rows of bolt holes which are equally spaced are arranged at corresponding positions of the upper flange of the I-shaped steel (4) and the upper surface of the PVC-FRP pipe (21), and the I-shaped steel is connected with the upper surface of the PVC-FRP pipe through high-strength bolts (6).
7. The fabricated type steel concrete column-PVC-FRP pipe reinforced concrete beam connection node as claimed in claim 1, wherein: concrete is poured on the inner side and the outer side of the column section steel (11), the column longitudinal rib (12), the joint connecting piece (3), the I-shaped steel (4), the steel bar connector (5), the beam longitudinal rib (22) and the beam stirrup (23) to form a section steel concrete column joint area-PVC-FRP pipe reinforced concrete beam joint.
8. The fabricated type steel concrete column-PVC-FRP pipe reinforced concrete beam connection node as claimed in claim 1, wherein: the I-shaped steel (4) and the steel bar connectors (5) can be arranged in four different directions of the joint connecting piece (3) according to requirements, and the number of the connecting beam bodies can be one to four respectively.
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 |
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| 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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| CN114775783A true CN114775783A (en) | 2022-07-22 |
| CN114775783B CN114775783B (en) | 2024-03-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116856554A (en) * | 2023-02-16 | 2023-10-10 | 中交四公局第一工程有限公司 | Supplementary coupling mechanism that consolidates of shaped steel concrete composite structure |
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| CN213418235U (en) * | 2020-09-21 | 2021-06-11 | 华南理工大学 | Prefabricated assembled FRP pipe-concrete-steel pipe combination column |
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2022
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116856554A (en) * | 2023-02-16 | 2023-10-10 | 中交四公局第一工程有限公司 | Supplementary coupling mechanism that consolidates of shaped steel concrete composite structure |
| 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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| Publication number | Publication date |
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| CN114775783B (en) | 2024-03-12 |
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