Assembled structure based on composite material bulwark and steel structure and assembling method thereof

Abstract

This invention proposes an assembly structure and method based on a composite material bulwark and a steel structure. The assembly structure includes a steel base, a steel elbow plate, a composite material bulwark, and fiberglass sheets. The steel elbow plate is fixedly connected to the steel base, the composite material bulwark is located above the steel base, and the steel elbow plate is located on the side of the composite material bulwark. Multiple fiberglass sheets and an adhesive layer are filled in the gaps between the composite material bulwark and the steel base, and multiple fiberglass sheets and an adhesive layer are also filled in the gaps between the composite material bulwark and the steel elbow plate. The composite material bulwark is fixedly connected to both the steel base and the steel elbow plate using fasteners. This assembly structure solves the problem of uneven bulwark assembly without altering the steel or composite material structures. It ensures both aesthetic appeal in the installation area and avoids the frequent maintenance and disassembly issues caused by rubber aging in existing technologies.

Description

Technical Field

[0001] This invention relates to the field of ship structure design technology, and in particular to an assembly structure based on composite material bulwarks and steel structures and its assembly method. Background Technology

[0002] With the continuous development of modern technology and the application of new materials, composite materials, with their advantages of light weight, high strength, good corrosion resistance, and high design flexibility, are gradually replacing metals and are widely used in lightweight ship structure design and RCS performance improvement. However, since composite materials are mostly produced using compression molding processes, the molded composite material structures cannot be ground or cut. When connected to steel hull structures with complex precision, problems such as large connection gaps, interface mismatches, and significant height differences can easily occur. Considering that composite material bulwarks are generally located in exposed areas of the ship, it is necessary to ensure the flatness of the composite material bulwark assembly to maintain the overall aesthetics of the ship.

[0003] By attaching fiberglass sheets to the surface of the composite bulwark, the composite bulwark can still meet the assembly requirements such as the outer surface of the bulwark being consistent with the inclination angle of the steel bulwark, and the top flange of the bulwark being smooth and having a smooth transition, even when the curvature of the steel base and steel elbow is complex and cannot be calculated. Summary of the Invention

[0004] The main objective of this invention is to provide an assembly structure and assembly method based on composite material bulwarks and steel structures, aiming to solve the problem of uneven bulwark assembly without altering the steel structure and composite material structure.

[0005] To achieve the above objectives, the present invention provides an assembly structure based on a composite material bulwark and a steel structure, comprising a steel base, a steel elbow plate, a composite material bulwark, and fiberglass sheets, wherein... The steel elbow plate is fixedly connected to the steel base. The composite bulwark is located above the steel base, and the steel elbow plate is located on the side of the composite bulwark. The gap between the composite bulwark and the steel base is filled with multiple fiberglass sheets and adhesive layers. The gap between the composite bulwark and the steel elbow plate is filled with multiple fiberglass sheets and adhesive layers. The composite bulwark is fixedly connected to the steel base and the steel elbow plate by fasteners.

[0006] Preferably, the fiberglass sheet has through holes for fasteners to pass through.

[0007] Preferably, the adhesive layer comprises a vinyl resin.

[0008] Preferably, the flanges around the composite bulwark are provided with through holes for fasteners to pass through, and the steel base and steel elbow plate are provided with threaded holes corresponding to the through holes on the composite bulwark.

[0009] Preferably, the thickness of the fiberglass sheet is 1mm to 3mm.

[0010] This invention further proposes an assembly structure based on the above-mentioned composite material bulwark and steel structure, comprising the following steps: The composite bulwark is placed on top of the steel base, and the composite bulwark is pre-fixed to the steel base and the steel gusset plate using fastening tools; According to the shape of the gap between the composite bulwark and the steel base and steel elbow plate, fill the gap with fiberglass sheets of appropriate size to ensure that the composite bulwark can fit tightly with the steel base and steel elbow plate; Remove the fastening tools, all fiberglass sheets, and composite bulwark, and mark the location and shape of the fiberglass sheets; Holes are made in the fiberglass sheet and an adhesive layer is applied. The fiberglass sheet is then bonded to the sides of the flanges around the composite bulwark according to the marked positions. The dried composite bulwark with bonded fiberglass sheets is installed on top of the steel base, and the composite bulwark is fixedly connected to the steel base and steel gusset plate with fasteners.

[0011] Preferably, the fastening tool includes a G-clamp and a bolt.

[0012] Preferably, after the fiberglass sheet is bonded to the flange sides of the composite bulwark, paint is sprayed on the surface of the fiberglass sheet after it dries; before bonding the fiberglass sheet, the surface of the composite bulwark is roughened to increase the roughness of the contact surface.

[0013] Preferably, when the composite bulwark is fixedly connected to the steel base and the steel elbow plate by fasteners, the fasteners are passed through the through holes in the composite bulwark, the steel base, the steel elbow plate, and the fiberglass sheet.

[0014] Preferably, when filling the gap between the composite bulwark and the steel base and the steel elbow plate with fiberglass sheets of appropriate size, the fiberglass sheets are selectively polished according to the shape of the gap.

[0015] The assembly structure based on composite bulwark and steel structure proposed in this invention has the following beneficial effects: 1. Solve the problem of uneven bulwark assembly without altering the steel and composite material structures; 2. This assembly structure can ensure the coordination and aesthetics of the installation area, and avoid the problem of frequent maintenance and disassembly caused by rubber aging in existing technologies; 3. By attaching fiberglass sheets to the surface of the composite bulwark, the composite bulwark can still meet the assembly requirements such as the outer surface of the bulwark being consistent with the inclination angle of the steel bulwark and the top flange of the bulwark being smooth and having a smooth transition, even when the curvature of the steel base and the steel elbow plate is complex and cannot be calculated. 4. This assembly structure has the advantages of simple structure, easy installation and stable structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a preferred embodiment of the assembly structure of the present invention based on composite material bulwark and steel structure; Figure 2 This is a schematic flowchart illustrating the assembly method of the assembly structure based on composite material bulwark and steel structure according to the present invention.

[0017] In the diagram, 1-steel base, 11-panel, 12-web plate, 2-steel elbow plate, 3-composite material bulwark, 4-fiberglass sheet.

[0018] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0020] It should be noted that in the description of this invention, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] This invention proposes an assembly structure based on composite material bulwarks and steel structures.

[0022] Reference Figure 1 In this preferred embodiment, an assembly structure based on a composite material bulwark and a steel structure includes a steel base 1 (the steel base 1 includes a panel 11 and a web 12), a steel elbow plate 2, a composite material bulwark 3, and fiberglass sheets 4, wherein... The steel elbow plate 2 is fixedly connected to the steel base 1 (the two are connected by welding). The composite bulwark 3 is located above the steel base 1, and the steel elbow plate 2 is located on the side of the composite bulwark 3. The gap between the composite bulwark 3 and the steel base 1 is filled with multiple fiberglass sheets 4 and an adhesive layer. The gap between the composite bulwark 3 and the steel elbow plate 2 is filled with multiple fiberglass sheets 4 and an adhesive layer. The composite bulwark 3 is fixedly connected to both the steel base 1 and the steel elbow plate 2 by fasteners.

[0023] Because the steel base 1 panel has a hyperbolic curvature structure parallel to the ship's deck, and due to welding deformation and errors during the steel structure welding process, the steel base 1 panel cannot completely fit with the bulwark bottom flange in some areas. Therefore, fiberglass sheets 4 are needed to fill the gaps.

[0024] Furthermore, the fiberglass sheet 4 has through holes for fasteners to pass through. The adhesive layer comprises vinyl ester resin.

[0025] All four flanges of the composite material bulwark 3 are provided with through holes for fasteners to pass through, and the steel base 1 and the steel elbow plate 2 are provided with threaded holes corresponding to the through holes on the composite material bulwark 3.

[0026] In this embodiment, the thickness of the fiberglass sheet 4 is 1mm to 3mm, and the main material of the fiberglass sheet 4 is glass fiber. The diameter of the fiberglass sheet 4 is 1000mm to 2000mm, and the width is 80mm to 150mm.

[0027] The assembly process of this composite material bulwark and steel structure is as follows: 1. The steel base 1 and the steel elbow plate 2 are pre-fixed and connected by fasteners; 2. Place the composite material bulwark 3 on top of the steel base 1, and use fastening tools (multiple G-clamps) to pre-fix the composite material bulwark 3 to the steel base 1 and the steel elbow plate 2. 3. Fill the gaps between the composite bulwark 3 and the steel base 1 and the steel elbow plate 2 with fiberglass sheets 4 of appropriate size according to the shape of the gaps, so as to ensure that the composite bulwark 3, the steel base 1 and the steel elbow plate 2 can fit tightly together. 4. Disassemble the fastening tools, all fiberglass sheets, and composite bulwark 3, and mark the position and shape of the fiberglass sheets 4; 5. Apply an adhesive layer to all fiberglass sheets 4 and attach the fiberglass sheets 4 to the sides of the flanges around the composite bulwark 3 according to the marked positions. 6. Install the dried composite bulwark 3 with the fiberglass sheet 4 bonded on top of the steel base 1, and fix the composite bulwark 3 to the steel base 1 and the steel elbow plate 2 with fasteners.

[0028] The assembly structure based on composite bulwark and steel structure proposed in this embodiment has the following beneficial effects: 1. Solve the problem of uneven bulwark assembly without altering the steel and composite material structures; 2. This assembly structure can ensure the coordination and aesthetics of the installation area, and avoid the problem of frequent maintenance and disassembly caused by rubber aging in existing technologies; 3. By attaching fiberglass sheets 4 to the surface of the composite bulwark 3, the composite bulwark 3 can still meet the assembly requirements such as the outer surface of the bulwark being consistent with the inclination angle of the steel bulwark, and the top flange of the bulwark being smooth and the transition being smooth, even when the curvature of the steel base 1 and the steel elbow plate 2 is complex and cannot be calculated. 4. This assembly structure has the advantages of simple structure, easy installation and stable structure.

[0029] The present invention further proposes an assembly method for an assembly structure based on composite material bulwarks and steel structures.

[0030] Reference Figure 2 In this preferred embodiment, an assembly structure based on the above-described composite material bulwark and steel structure includes the following steps: Step S10: Place the composite material bulwark 3 on top of the steel base 1, and use fastening tools to pre-fix the composite material bulwark 3 to the steel base 1 and the steel elbow plate 2. Step S20: Fill the gap between the composite bulwark 3 and the steel base 1 and the steel elbow plate 2 with fiberglass sheets 4 of the appropriate size according to the shape of the gap, so as to ensure that the composite bulwark 3 can fit tightly with the steel base 1 and the steel elbow plate 2. Step S30: Remove the fastening tools, all fiberglass sheets, and composite bulwark 3, and mark the position and shape of the fiberglass sheets 4; Step S40: Make holes in the fiberglass sheet 4 and apply an adhesive layer (the position of the holes is set according to the position of the holes on the flange of the composite bulwark 3), and attach the fiberglass sheet 4 to the sides of the flange of the composite bulwark 3 according to the marked positions. In step S50, the dried composite bulwark 3 with the fiberglass sheet 4 bonded to it is installed on top of the steel base 1, and the composite bulwark 3 is fixedly connected to the steel base 1 and the steel elbow plate 2 by fasteners (stainless steel bolts can be used).

[0031] Specifically, in step S10, the fastening tools include G-clamps and bolts. Multiple G-clamps can be used to achieve a pre-fixed connection between the composite bulwark 3 and the steel base 1 and the steel elbow plate 2. The G-clamps are then used to clamp and fix the composite bulwark 3 and the panel or elbow plate of the steel base 1.

[0032] In step S50, after the fiberglass sheet 4 is bonded to the flange sides of the composite bulwark 3, and after it dries, paint is sprayed on the surface of the fiberglass sheet 4. Before bonding the fiberglass sheet 4, the surface of the composite bulwark 3 is roughened to increase the roughness of the contact surface and improve the adhesion between the fiberglass sheet 4 and the bulwark.

[0033] When fastening the composite bulwark 3 to the steel base 1 and the steel elbow plate 2, the fasteners are passed through the through holes in the composite bulwark 3, the steel base 1, the steel elbow plate 2, and the fiberglass sheet.

[0034] When filling the gaps between the composite bulwark 3 and the steel base 1 and steel elbow plate 2 with fiberglass sheets 4 of appropriate size, the fiberglass sheets 4 are selectively ground according to the shape of the gaps. The pre-assembly process can be repeated multiple times during grinding until the composite bulwark 3 can fit tightly with the steel structure.

[0035] During the filling process, the fiberglass sheet 4 is pasted onto the surface of the composite bulwark 3 according to the approximate size and curvature of the gap.

[0036] The assembly method proposed in this invention ensures that the composite material bulwark 3 structure assembled according to this method not only maintains the aesthetic appearance of the installation area but also avoids the problem of frequent maintenance and disassembly due to rubber aging. This assembly method fully considers various problems that may be encountered in the actual assembly process and has proven to be effective through engineering practice, significantly improving the compatibility between the composite material bulwark 3 and the steel hull structure.

[0037] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An assembly method for an assembly structure based on composite material bulwarks and steel structures, characterized in that, The assembly structure based on composite bulwark and steel structure includes a steel base, a steel gusset plate, a composite bulwark, and fiberglass sheets. The steel gusset plate is fixedly connected to the steel base. The composite bulwark is located above the steel base, and the steel gusset plate is located on the side of the composite bulwark. Multiple fiberglass sheets and an adhesive layer are filled in the gaps between the composite bulwark and the steel base. The composite bulwark is fixedly connected to both the steel base and the steel gusset plate using fasteners. The adhesive layer comprises vinyl ester resin. The assembly method for the composite bulwark and steel structure assembly structure includes the following steps: The composite bulwark is placed on top of the steel base, and the composite bulwark is pre-fixed to the steel base and the steel gusset plate using fastening tools; According to the shape of the gap between the composite bulwark and the steel base and steel elbow plate, fill the gap with fiberglass sheets of appropriate size to ensure a tight fit between the composite bulwark and the steel base and steel elbow plate; Remove the fastening tools, all fiberglass sheets, and composite bulwark, and mark the location and shape of the fiberglass sheets; Holes are made in the fiberglass sheet and an adhesive layer is applied. The fiberglass sheet is then bonded to the sides of the flanges around the composite bulwark according to the marked positions. The dried composite bulwark with bonded fiberglass sheets is installed on top of the steel base, and the composite bulwark is fixedly connected to the steel base and steel gusset plate with fasteners.

2. The assembly method of the assembly structure based on composite material bulwark and steel structure as described in claim 1, characterized in that, The fiberglass sheet has through holes for fasteners to pass through.

3. The assembly method of the assembly structure based on composite material bulwark and steel structure as described in claim 1, characterized in that, The composite bulwark has through holes on all four flanges for fasteners to pass through, and the steel base and steel elbow plate have threaded holes corresponding to the through holes on the composite bulwark.

4. The assembly method of the assembly structure based on composite bulwark and steel structure as described in any one of claims 1 to 3, characterized in that, The thickness of the fiberglass sheet is 1mm to 3mm.

5. The assembly method of the assembly structure based on composite bulwark and steel structure as described in claim 1, characterized in that, The fastening tools include G-clamps and bolts.

6. The assembly method of the assembly structure based on composite material bulwark and steel structure as described in claim 1, characterized in that, After the fiberglass sheets are bonded to the flange sides of the composite bulwark and allowed to dry, paint is sprayed onto the surface of the fiberglass sheets. Before bonding the fiberglass sheets, the surface of the composite bulwark is roughened to increase the roughness of the contact surface.

7. The assembly method of the assembly structure based on composite material bulwark and steel structure as described in claim 1, characterized in that, When the composite bulwark is fixedly connected to the steel base and the steel elbow plate by fasteners, the fasteners are passed through the through holes in the composite bulwark, the steel base and the steel elbow plate, and the fiberglass sheet.

8. The assembly method of the assembly structure based on composite material bulwark and steel structure as described in claim 1, characterized in that, When filling the gaps between the composite bulwark and the steel base and steel elbow with fiberglass sheets of appropriate size according to the shape of the gaps, the fiberglass sheets are selectively polished according to the shape of the gaps.

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