CN112575911A - Composite material section bar beam lengthening structure and connecting method and application thereof - Google Patents
Composite material section bar beam lengthening structure and connecting method and application thereof Download PDFInfo
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- CN112575911A CN112575911A CN202011582859.XA CN202011582859A CN112575911A CN 112575911 A CN112575911 A CN 112575911A CN 202011582859 A CN202011582859 A CN 202011582859A CN 112575911 A CN112575911 A CN 112575911A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile
- E04B1/5812—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile of substantially I - or H - form
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/28—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of materials not covered by groups E04C3/04 - E04C3/20
Abstract
The invention discloses a composite material section beam lengthening structure and a connecting method and application thereof, wherein the composite material section beam lengthening structure comprises two I-shaped beams; the two ends of the I-beam are respectively a long connecting end and a fixed end; the connecting length ends of the two I-beams are butted, and the web plates and the flange plates of the connecting length ends of the two I-beams are fixedly connected with the first bolt group through the connecting plate group; the web plates of the fixed ends of the two I-shaped beams are fixedly connected with the outer fixed end through the fixed plate group and the second bolt group. According to the invention, the connecting strength and rigidity of the connected beam are increased by fixing the connecting plate groups, the stability of the connecting structure is further improved by fastening the connecting plate groups and the first bolt groups, so that the lengthened I-beam can meet the requirements of bearing capacity and rigidity, the section bar beam connecting method is applied to connection of the PFRP I-beam, the structure and performance advantages of a new material can be effectively utilized, the use and development of the new material are promoted, and the rigidity and strength of the node connecting structure can be improved to the greatest extent.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a composite material section bar beam lengthening structure and a connecting method and application thereof.
Background
The fiber reinforced composite material pultruded profile, PFRP for short, is a novel profile produced by taking FRP fiber yarns as a material through a pultrusion process, has the advantages of consistent light weight, high strength, corrosion resistance, convenient processing and the like of FRP materials, and simultaneously has the remarkable advantage of high production efficiency, so that the material can be popularized in a large area and applied to structures in general environments or special environments.
The connection problem of the PFRP section bars is always the focus of attention of various scholars, and the previous research on the connection of the PFRP section bars mainly focuses on the connection of plates, and the connection modes comprise bolt connection, glue joint connection and glue bolt mixed connection. The failure of the connection of the sheets occurs mainly in one plane, which is a two-dimensional problem. The connection of sectional materials such as I-beams and rectangular slabs can be damaged on all surfaces, such as fiber and matrix cracking damage, interlayer peeling damage and the like, is a three-dimensional problem, the connection mode which is suitable for plates in the past cannot be directly used for node connection of pipes, and a plurality of problems need to be solved. Meanwhile, the composite material cannot be welded, which also generates higher requirements on the connection mode.
Therefore, how to provide a high-strength composite material section beam extension structure, a connection method and an application thereof, which satisfy the needs of section beams under different conditions, is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a composite material section beam lengthening structure, a connecting method thereof and an application thereof, and aims to solve the above technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a composite material section beam lengthening structure comprises two I-shaped beams; the two ends of the I-beam are respectively a lengthening end and a fixing end; the web plates and the flange plates of the extension ends of the two I-shaped beams are fixedly connected with the first bolt group through the connecting plate group; and webs of the fixed ends of the two I-shaped beams are fixedly connected with the outer fixed end through the fixed plate group and the second bolt group.
Through the technical scheme, the connecting strength and rigidity of the connected beam are increased in a mode of fixing by the connecting plate group, and the stability of the connecting structure is further improved by fastening the connecting plate group and the first bolt group, so that the lengthened I-beam can meet the requirements on bearing capacity and rigidity.
Preferably, in the composite material section beam lengthening structure, the i-beam is made of PFRP material. The PFRP material has the advantages of light weight, high strength, corrosion resistance, convenient processing and the like.
Preferably, in the composite profile beam extension structure, the first bolt group and the second bolt group are made of PFRP materials. The PFRP material has the advantages of light weight, high strength, corrosion resistance, convenient processing and the like.
Preferably, in the composite material section beam lengthening structure, the connecting plate group comprises two web connecting plates and two flange connecting plates; the two web connecting plates are respectively positioned on two sides of a web of the I-beam; and the two flange connecting plates are respectively positioned on the outer sides of the flange plates of the I-shaped beam. Can satisfy the connection to web and flange board, improve structural strength and stability.
Preferably, in the composite material section beam lengthening structure, a plurality of first lengthening connecting holes are formed in a web plate and a flange plate at the lengthening end of the i-beam; a plurality of second elongated connecting holes corresponding to the first elongated connecting holes are formed in the web connecting plate and the flange connecting plate; the first bolt group is connected with the first lengthening connecting hole and the second lengthening connecting hole. The connection requirement of the first bolt group can be met.
Preferably, in the composite material section beam lengthening structure, the web connecting plate and the flange connecting plate are made of PFRP materials. The PFRP material has the advantages of light weight, high strength, corrosion resistance, convenient processing and the like.
Preferably, in the composite material section beam extension structure, the fixed plate group comprises two angle steel plates; the two angle steel plates are symmetrically arranged on two sides of a web plate of the I-shaped beam; the angle steel plate is respectively used for connecting the web plate of the I-beam and the outer fixed end. Can satisfy the connection of I-beam and outer stiff end, improve structural strength and stability.
Preferably, in the composite material section beam lengthening structure, a web plate at the fixed end of the i-beam is provided with a plurality of first fixed connection holes; the angle steel plate is provided with a plurality of second fixed connecting holes corresponding to the first fixed connecting holes and a third fixed connecting hole used for being connected with the outer fixed end; the second bolt group is connected with the first fixed connecting hole, the second fixed connecting hole and the third fixed connecting hole. The connection requirements of the second bolt group can be met.
Preferably, in the composite material section beam extension structure, the angle steel plate is made of PFRP material. The PFRP material has the advantages of light weight, high strength, corrosion resistance, convenient processing and the like.
The invention also provides a connecting method of the composite material section bar beam lengthening structure, which comprises the following steps:
s1, designing the use parameters of the I-beam, the connecting plate group, the fixing plate group, the first bolt group and the second bolt group according to the bearing capacity requirement of the connected beam;
s2, forming holes on the web plate and the flange plate at the extension end of the I-beam according to the size and the assembly error of the first bolt group, and correspondingly forming holes on the connecting plate group;
s3, forming holes on a web plate of the fixed end of the I-beam according to the size and the assembly error of the second bolt group, and correspondingly forming holes on the fixed plate group;
s4, respectively attaching the connecting plate groups to the top surface and the bottom surface of the flange plate at the extension end of the I-beam and the two sides of the web plate, and fastening and connecting the connecting plate groups through first bolt groups; the fixing plate group is attached to two sides of a web plate of the fixed end of the I-beam and is fixedly connected with the web plate through the second bolt group.
Through the technical scheme, the composite material section beam lengthening process convenient to design and install is provided, parameter design and selection of each construction material can be quickly realized, and the composite material section beam lengthening process is convenient to install, high in practicability and convenient to popularize.
The invention also provides application of the connecting method of the composite material section bar beam lengthening structure in connection of PFRP I-beams.
Through the technical scheme, the section beam connecting method is applied to connection of the PFRP I-beam, the structure and performance advantages of new materials can be effectively utilized, the use and development of the new materials are promoted, and the rigidity and strength of the node connecting structure can be improved to the greatest extent.
According to the technical scheme, compared with the prior art, the invention discloses a composite material section bar beam lengthening structure, a connecting method and application thereof, and the composite material section bar beam lengthening structure has the following beneficial effects:
1. the invention provides a composite material type beam connecting process which is convenient to design and install, can quickly realize parameter design and selection of each construction material, is convenient and fast to install, has strong practicability and is convenient to popularize.
2. The invention applies the section bar node connecting structure to the connection of the PFRP I-beam and the rectangular lath, can effectively utilize the structure and performance advantages of new materials, promotes the use and development of the new materials, and can improve the rigidity and the strength of the node connecting structure to the greatest extent.
3. The composite section bar long beam designed and manufactured by the invention can be used as a supporting structure, and because the composite material cannot be welded, in some projects which cannot use large machinery to transport and install large-span beams, the beam is long by using the composite section bar beam splicing method so as to meet the requirements of size and bearing capacity. The composite material is suitable for projects in extreme environments and remote blocked areas, and has good corrosion resistance and structural bearing capacity.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a composite material section beam lengthening structure provided by the invention;
fig. 2 is an exploded view of a portion of the structure provided by the present invention.
Wherein:
1-an i-beam;
11-a lengthened end; 12-a fixed end; 13-a first elongated connection hole; 14-a first fixed attachment hole;
2-a set of connection plates;
21-a web connection plate; 22-flange connection plate; 23-a second elongated connection hole;
3-a first bolt group;
4-fixing the plate group;
41-angle steel plate; 42-a second fixed attachment hole; 43-a third fixed attachment hole;
5-second bolt group.
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.
Referring to the attached drawings 1 and 2, the embodiment of the invention discloses a composite material section beam lengthening structure, which comprises two I-shaped beams 1; the two ends of the I-beam 1 are respectively a lengthening end 11 and a fixing end 12; the extension ends 11 of the two I-beams 1 are involuted, and the web plates and the flange plates of the extension ends 11 of the two I-beams 1 are fixedly connected with the first bolt group 3 through the connecting plate group 2; the web plates of the fixed ends 12 of the two I-shaped beams 1 are fixedly connected with the outer fixed ends through the fixed plate group 4 and the second bolt group 5.
In order to further optimize the technical scheme, the I-beam 1, the first bolt group 3 and the second bolt group 5 are made of PFRP materials.
In order to further optimize the above technical solution, the connection plate group 2 includes two web connection plates 21 and two flange connection plates 22; the two web connecting plates 21 are respectively positioned at two sides of the web of the I-beam 1; the two flange connecting plates 22 are respectively positioned on the outer sides of the flange plates of the I-beam 1.
In order to further optimize the technical scheme, a plurality of first lengthening connecting holes 13 are formed in a web plate and a flange plate of the lengthening end 11 of the I-beam 1; a plurality of second elongated connecting holes 23 corresponding to the first elongated connecting holes 13 are formed in the web connecting plate 21 and the flange connecting plate 22; the first bolt group 3 connects the first elongated connection hole 13 and the second elongated connection hole 23.
In order to further optimize the technical scheme, the web connecting plate 21 and the flange connecting plate 22 are made of PFRP materials.
In order to further optimize the above technical solution, the fixing plate set 4 includes two angle steel plates 41; the two angle steel plates 41 are symmetrically arranged on two sides of a web plate of the I-beam 1; the angle steel plates 41 are respectively used for connecting the web plate and the outer fixed end of the I-beam 1.
In order to further optimize the technical scheme, a web plate of the fixed end 12 of the I-beam 1 is provided with a plurality of first fixed connecting holes 14; the angle steel plate 41 is provided with a plurality of second fixed connecting holes 42 corresponding to the first fixed connecting holes 14 and third fixed connecting holes 43 used for connecting with the external fixed ends; the second bolt group 5 connects the first and second fixed connection holes 14 and 42, and the second and third fixed connection holes 42 and 43.
In order to further optimize the above technical solution, the angle steel plate 41 is made of PFRP material.
The invention provides a connecting method of a composite material section bar beam extension structure, which comprises the following steps:
s1, designing the use parameters of the I-beam 1, the connecting plate group 2, the fixing plate group 4, the first bolt group 3 and the second bolt group 5 according to the bearing capacity requirement of the connected beam;
s2, forming holes on the web plate and the flange plate of the lengthened end 11 of the I-beam 1 according to the size and the assembly error of the first bolt group 3, and correspondingly forming holes on the connecting plate group 2;
s3, forming holes on the web plate of the fixed end 12 of the I-beam 1 according to the size and the assembly error of the second bolt group 5, and correspondingly forming holes on the fixed plate group 4;
s4, respectively attaching the connecting plate groups 2 to the top surface and the bottom surface of the flange plate of the extension end 11 of the I-beam 1 and two sides of the web plate, and fixedly connecting the connecting plate groups through the first bolt groups 3; the fixed plate groups 4 are attached to two sides of a web plate of the fixed end 12 of the I-shaped beam 1 and are fixedly connected through the second bolt groups 5.
The sizes of the web connecting plate 21 and the flange connecting plate 22 are set according to the bearing capacity requirement of the connected rear beam and the side length of the I-shaped beam 1.
The sizes of the first bolt group 3 and the second bolt group 5, the distances between the first bolt group 3 and the second bolt group 5 and the beam edge of the I-shaped beam 1 and the distances between the bolts in the first bolt group 3 and the second bolt group 5 are set according to the bearing capacity requirement of the connected rear beam.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A composite material section beam lengthening structure is characterized by comprising two I-shaped beams (1); the two ends of the I-beam (1) are respectively a lengthening end (11) and a fixing end (12); the extension ends (11) of the two I-shaped beams (1) are involuted, and the web plates and the flange plates of the extension ends (11) of the two I-shaped beams (1) are fixedly connected with the first bolt group (3) through the connecting plate group (2); the webs of the fixed ends (12) of the two I-shaped beams (1) are fixedly connected with the outer fixed end through the fixed plate group (4) and the second bolt group (5).
2. A composite profile beam extension structure according to claim 1, wherein said i-beam (1), said first bolt group (3) and said second bolt group (5) are all PFRP material.
3. A composite profile beam extension structure according to claim 1, wherein the set of connection plates (2) comprises two web connection plates (21) and two flange connection plates (22); the two web connecting plates (21) are respectively positioned on two sides of a web of the I-shaped beam (1); the two flange connecting plates (22) are respectively positioned on the outer sides of the flange plates of the I-shaped beam (1).
4. The composite material section beam lengthening structure according to claim 3, wherein a plurality of first lengthening connecting holes (13) are formed in a web plate and a flange plate of the lengthening end (11) of the I-beam (1); a plurality of second elongated connecting holes (23) corresponding to the first elongated connecting holes (13) are formed in the web connecting plate (21) and the flange connecting plate (22); the first bolt group (3) is connected with the first elongated connecting hole (13) and the second elongated connecting hole (23).
5. A composite section beam extension structure according to claim 3 or 4, characterized in that the web flanges (21) and the flange flanges (22) are both PFRP material.
6. A composite profile beam extension structure according to claim 1, wherein said set of fixed plates (4) comprises two angle plates (41); the two angle steel plates (41) are symmetrically arranged on two sides of a web plate of the I-shaped beam (1); the angle steel plate (41) is used for being connected with the web plate of the I-shaped beam (1) and the outer fixed end respectively.
7. The composite material section beam lengthening structure is characterized in that a web plate of a fixed end (12) of the I-beam (1) is provided with a plurality of first fixed connecting holes (14); the angle steel plate (41) is provided with a plurality of second fixed connecting holes (42) corresponding to the first fixed connecting holes (14) and third fixed connecting holes (43) used for being connected with the outer fixed ends; the second bolt group (5) connects the first fixing connection hole (14) and the second fixing connection hole (42), and the second fixing connection hole (42) and the third fixing connection hole (43).
8. A composite profile beam extension structure according to claim 6 or 7, wherein said angle steel plate (41) is PFRP material.
9. A method of joining a composite profile beam extension structure according to any one of claims 1 to 8, comprising the steps of:
s1, designing the use parameters of the I-beam (1), the connecting plate group (2), the fixing plate group (4), the first bolt group (3) and the second bolt group (5) according to the bearing capacity requirement of the connected beam;
s2, forming holes on the web plate and the flange plate of the lengthened end (11) of the I-beam (1) according to the size and the assembly error of the first bolt group (3), and correspondingly forming holes on the connecting plate group (2);
s3, forming holes on a web plate of the fixed end (12) of the I-beam (1) according to the size and the assembly error of the second bolt group (5), and forming corresponding holes on the fixed plate group (4);
s4, respectively attaching the connecting plate groups (2) to the top surface and the bottom surface of a flange plate of the lengthened end (11) of the I-beam (1) and two sides of a web plate, and fastening and connecting the connecting plate groups through first bolt groups (3); the fixing plate groups (4) are attached to two sides of a web plate of the fixing end (12) of the I-shaped beam (1) and are fixedly connected through the second bolt groups (5).
10. Use of a joining method using a composite profile beam elongation structure according to claim 9 in PFRP i-beam joining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011582859.XA CN112575911A (en) | 2020-12-28 | 2020-12-28 | Composite material section bar beam lengthening structure and connecting method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011582859.XA CN112575911A (en) | 2020-12-28 | 2020-12-28 | Composite material section bar beam lengthening structure and connecting method and application thereof |
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| CN112575911A true CN112575911A (en) | 2021-03-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108821A (en) * | 2021-11-23 | 2022-03-01 | 清华大学 | Node connecting structure between FRP pultruded profiles and construction and assembly method |
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2020
- 2020-12-28 CN CN202011582859.XA patent/CN112575911A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108821A (en) * | 2021-11-23 | 2022-03-01 | 清华大学 | Node connecting structure between FRP pultruded profiles and construction and assembly method |
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