CN111231442A - Large-size multi-axial composite material bearing plate taking pultruded profile as sandwich and preparation method thereof - Google Patents

Large-size multi-axial composite material bearing plate taking pultruded profile as sandwich and preparation method thereof Download PDF

Info

Publication number
CN111231442A
CN111231442A CN202010151402.7A CN202010151402A CN111231442A CN 111231442 A CN111231442 A CN 111231442A CN 202010151402 A CN202010151402 A CN 202010151402A CN 111231442 A CN111231442 A CN 111231442A
Authority
CN
China
Prior art keywords
composite material
pultruded
pultrusion
tube
fiber cloth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010151402.7A
Other languages
Chinese (zh)
Inventor
方海
韩娟
刘伟庆
杨晨
蔡炜
王蕴天
黎冲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Tech University
Original Assignee
Nanjing Tech University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Tech University filed Critical Nanjing Tech University
Priority to CN202010151402.7A priority Critical patent/CN111231442A/en
Publication of CN111231442A publication Critical patent/CN111231442A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/18—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
    • B32B3/20—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side of hollow pieces, e.g. tubes; of pieces with channels or cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B32B37/1018—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure using only vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/12—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C5/00—Pavings made of prefabricated single units
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125—Grating or flooring for bridges
    • 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
    • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
    • E04B2/7401—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using panels without a frame or supporting posts, with or without upper or lower edge locating rails
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0076—Curing, vulcanising, cross-linking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/58—Cuttability
    • B32B2307/581—Resistant to cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2419/00—Buildings or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels

Abstract

The invention discloses a large-size multi-axial composite material bearing plate taking a pultruded profile as a sandwich and a preparation method thereof. Compared with other products, the composite material load-bearing plate structure has the greatest characteristic that the composite material web and the surface layer are formed by the pultruded section core material and the wound fiber cloth, so that the compression resistance, the bending resistance, the shearing resistance and the peeling resistance are obviously improved, and the integral mechanical property of the structure is enhanced. The composite material has the remarkable advantages of high resistance, high ductility and convenience in assembly, and can be applied to the field of infrastructure as bridge decks, floor decks, wall decks and the like.

Description

Large-size multi-axial composite material bearing plate taking pultruded profile as sandwich and preparation method thereof
Technical Field
The invention relates to a large-size multi-axial composite material load-bearing plate which is applied to bridge floors, floors and wall surfaces and takes pultruded profiles as a sandwich.
Background
The composite material is widely applied to the field of infrastructure due to the characteristics of light weight and high strength. At present, the concept of composite material bearing plates is also provided for reducing the structural weight of bridges (especially suspension bridges which are particularly sensitive to weight).
Glass fiber reinforced composites (GFRP) are widely used in the field of infrastructure because of their low cost advantage, often in the form of pultruded cavity profiles, but pultruded profiles are usually dominated by longitudinal fibers and have large shear and stress concentration at the interface between the face plate and the web plate, and are very prone to cleavage failure at the middle of the face plate or at the intersection between the face plate and the web plate. Therefore, the composite material pultrusion section has lower bearing capacity, and the existing pultrusion process is difficult to form the composite material member with the large-size section, so the composite material pultrusion section is commonly used for an auxiliary structure with low stress.
The sandwich structure of composite material with honeycomb, foam, balsa wood and other core material is one very wide structure for engineering application, and has increased section inertia moment and thus high bending strength and rigidity. However, the interface of the surface layer and the core material is easy to peel and damage during the manufacturing and service processes of the traditional composite material sandwich component, and the light weight and high strength characteristics of the traditional composite material sandwich component are seriously restricted.
The large-size multi-axial composite material bearing plate taking the pultruded profile as the sandwich is manufactured by the method, the composite sandwich structure is adopted, the composite pultruded profile is taken as the core material, the composite material is taken as the surface layer and the web plate, the advantages of the pultruded profile and the composite sandwich structure are fully utilized, the problems of low bearing capacity and interface stripping are solved, and the actual engineering requirement is met. The enhancement principle is as follows: the composite material surface layer, the composite material web plate and the composite material pultrusion section bar core material are integrally molded at one time, and the surface layer and the core material are organically integrated by the composite material web plate, so that the anti-stripping capability and the cooperative working capability of the surface layer and the core material are greatly improved; the compression and shearing performance of the stress of the unidirectional fiber of the core material is obviously enhanced.
Disclosure of Invention
The invention provides a large-size multi-axial composite material bearing plate taking a pultruded profile as a sandwich, aiming at the problems that the conventional pultrusion process is difficult to form a large-size section composite material member, and the pultruded plate is mainly made of unidirectional fibers, particularly the problems that a surface layer is easy to crack, a web plate is easy to shear, the interface of a sandwich structure of a foam sandwich composite material is easy to peel and the like in a cavity type pultruded plate. The series composite material plate members are prepared by taking the pultrusion sections as core materials and the composite materials as surface layers and lattice webs through an industrial forming process, have the remarkable advantages of high resistance, high ductility and convenience in assembly, and can be applied to the field of infrastructure as bridge panels, floor panels, wall panels and the like.
The technical scheme adopted by the invention is as follows: a large-size multi-axial composite material bearing plate taking a pultruded profile as a sandwich comprises a pultruded tube core material, a pultruded tube sealing material, a composite material web and a composite material panel;
the core material of the pultrusion tube is a rectangular section, a circular section or a hexagonal honeycomb section, and the size and the number of the core materials can be flexibly adopted according to the actual stress of the structure;
a plurality of pultruded tube core materials are spliced, paved and combined to form a combined member; the core material of the pultrusion pipe of the combined member is horizontally laid in a single layer, horizontally laid in multiple layers, horizontally staggered laid in multiple layers or vertically laid in multiple layers;
the composite member is externally provided with integral fiber cloth, the composite member is in the shape of a bridge deck, a road deck or a wallboard, the fiber cloth is wound at the peripheral joint part of the adjacent pultrusion pipe core material, and the resin is cured to form a composite material web plate and a composite material deck, and the composite material web plate is arranged along the height direction or the length direction of the pultrusion pipe core material to form a spatial lattice web plate;
both ends of the pultrusion tube core material are provided with pultrusion tube sealing materials which are composite material sheets and are sealed by gluing; or the sealing material of the pultrusion tube is a structural foam block and is plugged into two ends of the core material of the pultrusion tube for fixing and sealing.
Preferably, the winding fiber cloth and the integral outer covering fiber cloth are made of fiber materials, and comprise: monoaxial or multiaxial carbon fiber, glass fiber, aramid fiber or hybrid fiber cloth.
Preferably, the resin comprises: unsaturated polyester, vinyl, epoxy or phenolic resins.
The preparation method of the large-size multi-axial composite material load-bearing plate taking the pultruded profile as the sandwich comprises the following steps:
a. gluing and sealing two end parts of the core material of the pultrusion tube by using a composite material sheet with a certain thickness, or respectively plugging structural foam blocks with a certain length into two ends of the core material of the pultrusion tube and fixing for sealing;
b. laying fiber cloth on each pultruded tube core material with the sealed end along single-layer one-way, single-layer two-way, multi-layer multi-way or multi-layer multi-way,
c. laying one or more layers of fiber cloth on the surface of the core material of the pultruded tube with the sealed end;
d. the core materials of the spliced pultrusion pipe form the shapes of the designed bridge deck, road deck and wallboard, and then one or more layers of fiber cloth are integrally coated, and the layering angle and the layering number are determined according to the requirements.
e. Resin is filled into a vacuum bag or a mould through a vacuum bag forming process, a vacuum infusion forming process or an RTM forming process;
f. and after the resin is cured and molded, taking out, curing the fiber cloth layer and the resin into a composite material panel, and forming a composite material web plate by the joint position of the adjacent core materials and the resin. Thus obtaining the large-size multi-axial composite material bearing plate taking the pultruded section as the sandwich.
Has the advantages that:
compared with other sandwich structures, the large-size multi-axial composite material bearing plate taking the pultruded profile as the sandwich has the greatest characteristic that the core material of the pultruded profile and the winding fiber cloth form a composite material web and a surface layer together, so that the compression resistance, the bending resistance, the shearing resistance and the peeling resistance are obviously improved, and the overall mechanical property of the structure is enhanced.
Drawings
FIG. 1 is a schematic view of a large-sized multi-axial composite load-bearing plate sandwiched by pultruded profiles, wherein the core materials of the pultruded tubes are horizontally laid;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic view of a large-sized multi-axial composite load-bearing plate sandwiched by pultruded profiles, wherein core materials of double-layered pultruded tubes are horizontally laid;
FIG. 4 is a schematic view of a large-sized multi-axial composite load-bearing plate sandwiched by pultruded profiles, wherein core materials of double-layer pultruded tubes are horizontally laid in a staggered manner;
FIG. 5 is a schematic view of a large-sized multi-axial composite load-bearing plate sandwiched by pultruded profiles, wherein a plurality of layers of hexagonal pultruded tube core materials are horizontally laid, and trapezoidal and special-shaped pultruded profile core materials are laid on the edges;
FIG. 6 is a schematic view of a large-sized multi-axial composite load-bearing plate sandwiched by pultruded profiles, wherein the core materials of the pultruded tubes are vertically laid;
FIG. 7 is a schematic view of a large-size multi-axial composite load-bearing plate sandwiched by pultruded profiles, wherein the honeycomb section pultruded tube core material is laid vertically.
In the drawings: 1 is a core material of a pultrusion tube; 2 is a sealing material of the pultrusion tube; 3 is winding fiber cloth; 4 is an integral outer wrapping fiber cloth; 5 is a composite material web; and 6, a composite material panel.
Detailed Description
The invention will be further described with reference to the accompanying drawings and detailed description:
as shown in figures 1-7, a large-size multi-axial composite material load-bearing plate taking a pultruded profile as a sandwich comprises a pultruded tube core 1, a pultruded tube sealing material 2, a composite material web 5 and a composite material panel 6;
the winding fiber cloth 3 is wrapped outside the pultrusion tube core material 1, the laying direction and the number of layers of the winding fiber cloth 3 can be flexibly controlled according to needs, the pultrusion tube core material 1 is a rectangular section, a circular section or a hexagonal honeycomb section, and the size and the number can be flexibly adopted according to the actual stress of the structure;
a plurality of the pultruded pipe core materials 1 are spliced, paved and combined to form a combined member; the core material of the pultrusion pipe of the combined member is horizontally laid in a single layer, horizontally laid in a double layer, horizontally staggered laid in a double layer or vertically laid in a double layer;
the composite member is externally provided with integral externally-coated fiber cloth 4, the composite member is in the shape of a bridge deck, a road deck or a wallboard, the fiber cloth 3 is wound at the peripheral joint part of the adjacent pultrusion tube core material 1, and after the resin is cured, a composite material web 5 and a composite material deck 6 are formed, and the composite material web 5 is arranged along the height direction or the length direction of the pultrusion tube core material 1 to form a spatial lattice web;
both ends of the pultrusion tube core material 1 are provided with pultrusion tube sealing materials 2, and the pultrusion tube sealing materials 2 are composite material sheets and are sealed by gluing; or the sealing material 2 of the pultrusion tube is a structural foam block and is plugged into two ends of the core material 1 of the pultrusion tube for fixing and sealing;
winding fibre cloth 3 and whole outsourcing fibre cloth 4 be the fibre material, include: monoaxial or multiaxial carbon fiber, glass fiber, aramid fiber or hybrid fiber cloth. The resin comprises: unsaturated polyester, vinyl, epoxy or phenolic resins.
The preparation method of the large-size multi-axial composite material load-bearing plate taking the pultruded profile as the sandwich comprises the following steps:
a. gluing and sealing two end parts of the core material of the pultrusion tube by using a composite material sheet with a certain thickness, or respectively plugging structural foam blocks with a certain length into two ends of the core material of the pultrusion tube and fixing for sealing;
b. covering two layers of glass fiber cloth with a layering angle of 45 degrees on each outer layer of the pultruded tube core material with the end part sealed;
c. laying one or more layers of fiber cloth on the surface of the core material of the pultruded tube with the sealed end;
d. 8 pultrusion tube core materials wrapped with fiber cloth are placed side by side along the width direction of the cross section to form a plate, four layers of glass fiber cloth are wrapped outside the plate, 2 layers of fiber cloth with the ply angle of 45 degrees at the inner side are wrapped outside the plate along the width direction of the plate, and 2 layers of fiber cloth with the ply angle of 90 degrees at the outer side are wrapped outside the plate along the length direction of the plate;
e. resin is filled into a vacuum bag or a mould through a vacuum bag forming process, a vacuum infusion forming process or an RTM forming process;
f. and after the resin is cured and molded, taking out, curing the fiber cloth layer and the resin into a composite material panel, and forming a composite material web plate by the joint position of the adjacent core materials and the resin. Thus obtaining the large-size multi-axial composite material bearing plate taking the pultruded section as the sandwich.
The embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. It will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the spirit and scope of the invention.

Claims (4)

1. A large-size multi-axial composite material load-bearing plate taking a pultruded profile as a sandwich is characterized in that: the composite material comprises a pultruded tube core material, a pultruded tube sealing material, a composite material web and a composite material panel;
the outside of the tube core material of the pultrusion tube is wrapped with the winding fiber cloth, and the tube core material of the pultrusion tube is a rectangular section, a circular section or a hexagonal honeycomb section;
a plurality of pultruded tube core materials are spliced, paved and combined to form a combined member; the core material of the pultrusion pipe of the combined member is horizontally laid in a single layer, horizontally laid in multiple layers, horizontally staggered laid in multiple layers or vertically laid in multiple layers;
the composite member is externally provided with integral fiber cloth, the composite member is in the shape of a bridge deck, a road deck or a wallboard, the fiber cloth is wound at the peripheral joint part of the adjacent pultrusion pipe core material, and the resin is cured to form a composite material web plate and a composite material deck, and the composite material web plate is arranged along the height direction or the length direction of the pultrusion pipe core material to form a spatial lattice web plate;
both ends of the pultrusion tube core material are provided with pultrusion tube sealing materials which are composite material sheets and are sealed by gluing; or the sealing material of the pultrusion tube is a structural foam block and is plugged into two ends of the core material of the pultrusion tube for fixing and sealing.
2. A large-size multi-axial composite load-bearing sheet sandwiched by pultruded profiles according to claim 1, wherein: winding fiber cloth and whole outsourcing fiber cloth be the fibre material, include: monoaxial or multiaxial carbon fiber, glass fiber, aramid fiber or hybrid fiber cloth.
3. A large-size multi-axial composite load-bearing sheet sandwiched by pultruded profiles according to claim 1, wherein: the resin comprises: unsaturated polyester, vinyl, epoxy or phenolic resins.
4. The method for preparing a large-size multi-axial composite load-bearing sheet with a sandwich of pultruded profiles according to claim 1, 2 or 3, wherein: the method comprises the following steps:
a. the two ends of the tube core material of the pultrusion tube are sealed by gluing composite material sheets, or structural foam blocks are respectively plugged into the two ends of the tube core material of the pultrusion tube and fixed for sealing;
b. laying fiber cloth on each pultruded tube core material with the sealed end part along a single-layer single direction, a single-layer two-way direction, a multi-layer multi-direction or a multi-layer multi-direction;
c. laying one or more layers of fiber cloth on the surface of the core material of the pultruded tube with the sealed end;
d. the core materials of the pultrusion pipes are spliced to form the shapes of the designed bridge deck, road deck and wallboard, and then one or more layers of fiber cloth are integrally coated, and the layering angle and the number of layers are determined according to the requirements;
e. resin is filled into a vacuum bag or a mould through a vacuum bag forming process, a vacuum infusion forming process or an RTM forming process;
f. and taking out the composite material panel after the resin is cured and molded, curing the fiber cloth layer and the resin into a composite material panel, and forming a composite material web plate by the joint position of the adjacent core materials and the resin to obtain the large-size multi-axial composite material bearing plate taking the pultruded profile as a sandwich.
CN202010151402.7A 2020-03-06 2020-03-06 Large-size multi-axial composite material bearing plate taking pultruded profile as sandwich and preparation method thereof Pending CN111231442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010151402.7A CN111231442A (en) 2020-03-06 2020-03-06 Large-size multi-axial composite material bearing plate taking pultruded profile as sandwich and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010151402.7A CN111231442A (en) 2020-03-06 2020-03-06 Large-size multi-axial composite material bearing plate taking pultruded profile as sandwich and preparation method thereof

Publications (1)

Publication Number Publication Date
CN111231442A true CN111231442A (en) 2020-06-05

Family

ID=70876749

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010151402.7A Pending CN111231442A (en) 2020-03-06 2020-03-06 Large-size multi-axial composite material bearing plate taking pultruded profile as sandwich and preparation method thereof

Country Status (1)

Country Link
CN (1) CN111231442A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112895515A (en) * 2021-01-18 2021-06-04 上海电气风电集团股份有限公司 Wind power blade pultrusion main beam, manufacturing method and wind power blade
CN112959751A (en) * 2021-02-07 2021-06-15 中车青岛四方机车车辆股份有限公司 Pultrusion flame-retardant carbon fiber plate and application thereof
CN112962453A (en) * 2021-02-03 2021-06-15 江西龙正科技发展有限公司 Novel ultra-high strength concrete UHPC light combined bridge deck
CN113525431A (en) * 2021-07-30 2021-10-22 常州市新创智能科技有限公司 Anti-bending carbon fiber beam and manufacturing method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200946244Y (en) * 2006-06-16 2007-09-12 清华大学 Outer fiber enwound reinforced composite material hollow decking
CN201052677Y (en) * 2007-04-10 2008-04-30 南京工业大学 Lattice reinforced composite material sandwich structure
CN101954761A (en) * 2010-08-03 2011-01-26 南京工业大学 Spatial fiber web-reinforced composite material sandwich structure part
CN109732952A (en) * 2019-03-13 2019-05-10 武汉理工大学 A kind of Lightweight high-strength composite material structure and preparation method thereof
CN109795935A (en) * 2017-11-16 2019-05-24 江苏创曦复合材料科技有限公司 A kind of more lattice structural slabs of sandwich and preparation method thereof
CN212021859U (en) * 2020-03-06 2020-11-27 南京工业大学 Large-size multi-axial composite material bearing plate taking pultruded profile as sandwich

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200946244Y (en) * 2006-06-16 2007-09-12 清华大学 Outer fiber enwound reinforced composite material hollow decking
CN201052677Y (en) * 2007-04-10 2008-04-30 南京工业大学 Lattice reinforced composite material sandwich structure
CN101954761A (en) * 2010-08-03 2011-01-26 南京工业大学 Spatial fiber web-reinforced composite material sandwich structure part
CN109795935A (en) * 2017-11-16 2019-05-24 江苏创曦复合材料科技有限公司 A kind of more lattice structural slabs of sandwich and preparation method thereof
CN109732952A (en) * 2019-03-13 2019-05-10 武汉理工大学 A kind of Lightweight high-strength composite material structure and preparation method thereof
CN212021859U (en) * 2020-03-06 2020-11-27 南京工业大学 Large-size multi-axial composite material bearing plate taking pultruded profile as sandwich

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112895515A (en) * 2021-01-18 2021-06-04 上海电气风电集团股份有限公司 Wind power blade pultrusion main beam, manufacturing method and wind power blade
CN112962453A (en) * 2021-02-03 2021-06-15 江西龙正科技发展有限公司 Novel ultra-high strength concrete UHPC light combined bridge deck
CN112959751A (en) * 2021-02-07 2021-06-15 中车青岛四方机车车辆股份有限公司 Pultrusion flame-retardant carbon fiber plate and application thereof
CN113525431A (en) * 2021-07-30 2021-10-22 常州市新创智能科技有限公司 Anti-bending carbon fiber beam and manufacturing method thereof

Similar Documents

Publication Publication Date Title
CN111231442A (en) Large-size multi-axial composite material bearing plate taking pultruded profile as sandwich and preparation method thereof
US9120276B2 (en) Laminated composite bending and stiffening members with reinforcement by inter-laminar metal sheets
US20230279624A1 (en) Composite structural panel and method of fabrication
EP2303560B1 (en) A method of making a reinforced stiffener.
US6743504B1 (en) Co-cured composite structures and method of making them
Siwowski et al. Design, manufacturing and structural testing of all-composite FRP bridge girder
CN108869167B (en) Fan blade girder and manufacturing method thereof
CN101954761A (en) Spatial fiber web-reinforced composite material sandwich structure part
CN212021859U (en) Large-size multi-axial composite material bearing plate taking pultruded profile as sandwich
CN111893812A (en) Multi-axial fiber-reinforced pultruded profile sandwich composite spandrel girder and preparation method thereof
CN111186150A (en) Composite material combined column with pultruded profile as core material
Canning et al. MANUFACTURE, TESTING AND NUMERICAL ANALYSIS OF AN INNOVATIVE POLYMER COMPOSITE/CONCRETE STRUCTURAL UNIT.
CN101314935A (en) Composite material bridge deck
US20110271623A1 (en) Construction elements for buildings
CN104032667A (en) Interlayer structure adopting composite material as core and steel plate as cover skin
CN105479772A (en) Quasi-three dimensional enhanced composite dot matrix interlayer structure and manufacturing method thereof
JP2011240925A (en) Composite structural member with progressive rigidity
JP2011240925A5 (en)
US20080199682A1 (en) Structural Elements Made From Syntactic Foam Sandwich Panels
CN212375639U (en) Multi-axial fiber-reinforced pultruded profile sandwich composite spandrel girder
CN105369735B (en) A kind of corrugated arch core filled composite material combined bridge deck
CN104032669A (en) Bridge box type girder of interlayer structure
KR20020070065A (en) Integrally Bonded Fiber Reinforced Composite Deck of Adjustable Alignment, Method for Fabrication and Connection thereof
CN106836639B (en) FRP box-shaped section-concrete combined beam provided with bidirectional shear keys
CN201736487U (en) Spatial fiber web reinforced composite material interlayer structural member

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination