SMC composite material components, culvert components and culverts

Abstract

The present disclosure provides an SMC composite material component, which is integrally made by a molding process, and includes a component body with a corrugated structure, the component body includes a first surface and a second surface, and the component body is arranged with thickening strips at intervals in a first direction, the thickening strips have a first edge and a second edge extending in a second direction, and non-thickening strips are arranged adjacent to the first edge and the second edge, respectively, and the thickness of the thickening strips is greater than the thickness of the adjacent non-thickening strips, wherein the length between the first edge and the second edge of each thickening strip is set to the length of the curve between 1 to 6 adjacent crests and troughs of the corrugated structure. The reinforcing structure in the form of thickening strips provides an unexpected reinforcing effect, and the rigidity and elasticity of the SMC composite material component disclosed in the present disclosure are significantly improved.

Description

Technical Field

[0001] The present disclosure relates to an SMC composite material component, in particular to an SMC composite material component reinforced with a corrugated structure, and its application in the fields of water supply and drainage pipes or underground containers and traffic passages in roads, railways, ports, factories, mines, culverts, bridges or tunnels, and more particularly to a culvert component, a culvert assembly, and a culvert that can be used in the above-mentioned fields. Background Art

[0002] At present, reinforced concrete structures are usually used in domestic inner tunnels. However, reinforced concrete structures have technical problems such as long production cycle, high transportation cost, long construction cycle, short service life, and many safety hazards.

[0003] In recent years, corrugated steel plate structures made of steel plates have also been used to replace some reinforced concrete structures and used in culvert passages, spliced ​​pipes, old bridge repairs, tunnel reinforcement, integrated pipe corridors and other projects. Compared with reinforced concrete structures, although corrugated steel plate structures have improved performance and reduced costs, their chemical corrosion resistance is relatively poor and requires anti-corrosion treatment. Moreover, their anti-corrosion performance has certain limitations. Anti-corrosion coatings are applied on site, causing environmental pollution. The surface hardness of the anti-corrosion layer is poor. After friction, the anti-corrosion layer falls off, and the surface corrosion becomes worse, reducing the life of the culvert. In addition, since the corrugated steel plate adopts a stamping process, the molding process has low precision, and it is easy to deform during transportation and installation, resulting in installation difficulties and poor sealing after construction. It is easy to cause water seepage and damage to the foundation of the project. Moreover, after the corrugated steel plate is deformed, it is easy to cause the circular pipe after installation to be unable to be concentric, causing hidden dangers to the safety of the project.

[0004] Chinese patent publication CN110387834A discloses a corrugated culvert reinforcement structure and construction method. In the patent publication, multiple reinforcing ribs are equidistantly distributed in the corrugated grooves of the inner wall of the corrugated culvert, and the reinforcing ribs are connected and fixed to the wall of the corrugated culvert through connectors. In the patent publication, reinforcing ribs need to be separately added to the corrugated culvert and the reinforcing ribs are located on the inner wall of the corrugated culvert, so the installation process is cumbersome and it is easy to block the water flow during use, which constitutes an unfavorable factor for product application.

[0005] The Chinese patent CN111441266A submitted by the applicant of the present disclosure, application number CN202010256264.9, is entitled "Culvert member, culvert assembly, culvert, duct member, duct assembly and duct". The disclosure provides a culvert member, which is made of SMC composite material by a molding process, including: a member body, the member body has a longitudinal direction, and the cross section orthogonal to the longitudinal direction is arc-shaped, and the member body is alternately arranged with multiple ridges and grooves in the longitudinal direction; a front connecting flange, arranged at the longitudinal front end of the member body and protruding outward; a rear connecting flange, arranged at the longitudinal rear end of the member body and protruding outward; a left connecting flange, arranged at the left side of the member body and protruding outward; a right connecting flange, arranged at the right side of the member body and protruding outward; and a reinforcing rib, arranged on the outer arc surface of the member body, arranged between adjacent ridges, connected to adjacent ridges, and multiple reinforcing ribs are arranged circumferentially between each ridge. The disclosure also provides a culvert assembly, a culvert, a duct member, a duct assembly and a duct.

[0006] All the public documents mentioned in this article are incorporated into this article by reference in their entirety. Summary of the invention

[0007] [Technical issues to be solved]

[0008] The art has begun to use glass fiber reinforced plastic molded components to assemble highway culverts, other underground culverts and buried containers. However, since such buried components, especially highway culverts, need to bear a large load, it is hoped to further improve their load-bearing performance and reduce deformation, so as to ensure that they do not crack and deform less under load, so as to provide reliable sealing performance. In addition, it is also hoped to ensure that the inner wall of the assembled pipeline maintains a small fluid resistance and reduce the blockage and stagnation of impurities.

[0009] The art has adopted corrugated structures to reinforce components or structures such as culverts. In order to further improve the rigidity, the art has also adopted reinforcing ribs that intersect with the extension direction of the corrugated structure for reinforcement, or further provided protruding ribs or flanges on the edges of the components as reinforcement structures.

[0010] However, there is a need for further improvement in this field. In particular, for SMC composite material components, further improving the mechanical properties of the material means that the application field and application value of the material can be effectively expanded, bringing unpredictable market prospects.

[0011] [Technical solution]

[0012] In order to solve one of the above technical problems, the present disclosure provides the following technical solution.

[0013] According to one aspect of the present disclosure, there is provided an SMC composite material component, which is integrally formed by a molding process, and includes a component body with a corrugated structure, the component body including a first surface and a second surface, the corrugated structure is composed of a recessed structure and a raised structure alternately arranged in a first direction, each of the recessed structures and the raised structure extends in a second direction, the first direction is orthogonal to the second direction, the recessed structure on the first surface corresponds to the raised structure on the second surface, and the raised structure on the first surface corresponds to the recessed structure on the second surface, wherein the component body is arranged at intervals in the first direction. The thickened strip has a first edge and a second edge extending in the second direction, and non-thickened strips are arranged adjacent to the first edge and the second edge, respectively, and the thickness of the thickened strip is greater than the thickness of the adjacent non-thickened strips, and wherein, on the cross-section of the SMC composite material component formed along the first direction, a first cross-sectional curve formed on the first surface or a second cross-sectional curve formed on the second surface is observed, and on the first cross-sectional curve or the second cross-sectional curve, the length between the first edge and the second edge of each thickened strip is set to be 1 to 6 curve lengths between adjacent wave crests and wave troughs of the corrugated structure.

[0014] In a preferred embodiment, the length between the first edge and the second edge of each thickened strip is set to be 1.25 to 3 times the length of the curve between adjacent crests and troughs of the corrugated structure.

[0015] Preferably, each of the thickened strips covers a corrugated structure, that is, one crest and two troughs, or one trough and two crests. Further, each of the non-thickened strips covers about 1.5-2.5 corrugated structure units, preferably about 3 corrugated structure units.

[0016] Typically, the thickness in the thickened stripe region is 1.5-3 times the thickness in the non-thickened stripe region, preferably the thickness in the thickened stripe region is 1.8-2.2 times the thickness in the non-thickened stripe region.

[0017] According to at least one embodiment of the present disclosure, in the first direction, the thickened strips are arranged at substantially the same interval distance.

[0018] According to at least one embodiment of the present disclosure, the cross-section of the component body orthogonal to the first direction is arc-shaped, the surface of the component body close to the center of the circle is the first surface serving as the inner surface of the component body, and the surface away from the center of the circle is the second surface serving as the outer surface of the component body.

[0019] According to at least one embodiment of the present disclosure, a portion of the thickened strip having an increased thickness protrudes from an inner surface of the component body.

[0020] According to at least one embodiment of the present disclosure, the thickness of the thickened strip at the junction with the adjacent non-thickened strip changes gradually.

[0021] According to at least one embodiment of the present disclosure, except for the boundary regions close to the two end boundaries in the first direction and the two end boundaries in the second direction, the thickness of the non-thickened strip is substantially evenly distributed.

[0022] According to at least one embodiment of the present disclosure, a cross-sectional shape of the corrugated structure in the first direction is a sinusoidal curve.

[0023] According to at least one embodiment of the present disclosure, the length of the SMC molded component in the first direction is 2500mm-3000mm; the distance between the two opposite edges of the SMC molded component in the second direction is 1500mm-1800mm; the thickness of the non-thickened strip of the molded component body ranges from 8-10mm; the thickness inside the thickened strip is 6-20mm greater than the thickness of the non-thickened strip area; the width of the thickened strip is 150mm-300mm; the depth of the trough recess ranges from 25mm-100mm; the spacing between the center lines of each thickened strip is 300-1000mm.

[0024] According to at least one embodiment of the present disclosure, it further includes: a front connecting mechanism, arranged at the longitudinal front end of the component body; and a rear connecting mechanism, arranged at the longitudinal rear end of the component body, wherein when two or more SMC composite material components are connected front and back to form a pipe or a groove, the rear connecting mechanism of the front SMC composite material component is connected to the front connecting mechanism of the rear SMC composite material component.

[0025] Furthermore, the front connection mechanism is a front connection flange, and the rear connection mechanism is a rear connection flange. The front connection flange and the rear connection flange protrude inwardly or outwardly relative to the component body so as to connect the front and rear culvert components inside the culvert.

[0026] Furthermore, it also includes a left-side connecting mechanism and a right-side connecting mechanism, which are respectively arranged at both ends of the second direction and extend along the first direction. When more than two of the components are circumferentially connected to form a pipe or a groove, the right-side connecting mechanism of an SMC composite material component located on the left is connected to the left-side connecting mechanism of an SMC composite material component located on the right.

[0027] A second aspect of the present disclosure provides a culvert assembly, comprising the aforementioned SMC composite material component, wherein two or more SMC composite material components are connected and assembled into a circumferentially closed culvert assembly.

[0028] A third aspect of the present disclosure provides a stent, which is formed by connecting the stent assemblies described above in sequence in the longitudinal direction.

[0029] [Beneficial Effects of the Invention]

[0030] The corrugated structure itself is a kind of reinforcement structure, which is commonly used for the reinforcement of plates and pipes. Measures for further strengthening the corrugated structure include overall thickening of the material and reinforcement structures intersecting with the corrugated structure, such as the reinforcement ribs connecting the strip corrugated structures to each other as disclosed in the Chinese patent CN111441266A submitted by the applicant.

[0031] The setting of reinforcing ribs or reinforcing ribs generally has a narrow and high cross-sectional configuration, and the area of ​​the cross-sectional area is related to the improvement of rigidity. For the molding process, in order to form reinforcing ribs or reinforcing ribs, it is necessary to open a deeper groove on the mold, which makes the mold design and processing more complicated, which will significantly increase the mold cost. In addition, it will also increase the difficulty of demolding after the molding is completed, thereby reducing the product qualification rate and extending the product production time. In addition, the formed configuration will complicate the structure of the outer surface of the product, which will limit the development of such applications if it involves applications that require a smooth surface.

[0032] The inventors have made further improvements in practice based on the characteristics of the molding process. It was unexpectedly discovered that on the component body of the corrugated structure of the SMC composite material component, thickened strips are arranged at approximately the same spacing for the corrugated structure itself, and the extension direction of the thickened strips is consistent with the extension direction of the unit of the corrugated structure, that is, consistent with the extension direction of the crest or trough of the corrugated structure. The extension direction of the corrugated structure unit is the second direction, and the direction orthogonal to the second direction is the first direction.

[0033] The setting of such thickened area can be easily formed by improving the mold. For example, the upper mold corresponds to the outer surface of the component body, and the lower mold corresponds to the inner surface of the component body. By corresponding to the position where the thickened strip is formed, a corresponding recessed area is formed on the upper mold, the lower mold, or both of the molds. The increased thickness typically corresponds to about one time of the non-thickened part of the component body, the width is relatively large, and the amplitude of the covered curved surface is greater than the amplitude of the curved surface between adjacent wave crests and wave troughs.

[0034] In the cross section in the first direction, the shallow concave portion thus formed is different from the configuration of the reinforcing ribs or reinforcing ribs, and is relatively easier to modify the mold, and is not likely to form stress concentration, nor is it likely to affect the stability of component forming.

[0035] On the other hand, the additional thickening belt reinforcement structure provides an unexpected reinforcement effect, and the rigidity and elasticity of the SMC composite material component disclosed in the present invention are significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0037] Figure 1 A schematic diagram of a culvert member according to an embodiment of the present disclosure is shown;

[0038] Figure 2 A schematic diagram of the cross-sectional shape of a groove and a protrusion according to an embodiment of the present disclosure is shown;

[0039] Figure 3 A top view schematically showing an SMC composite material component according to a first embodiment of the present disclosure;

[0040] Figure 4 Show Figure 3 The cross-sectional view along the AA direction is shown;

[0041] Figure 5 A schematic diagram of a culvert member according to an embodiment of the present disclosure is shown;

[0042] Figure 6 A schematic diagram of a stent according to one embodiment of the present disclosure is shown;

[0043] Figure 7 A schematic diagram of a duct according to an embodiment of the present disclosure is shown.

[0044] Reference numerals:

[0045] 10 Non-thickened strips

[0046] 20 Thickening Strip

[0047] 40 first surface (outer surface)

[0048] 50 Second surface (inner surface)

[0049] 70 First Edge

[0050] 80 Second Edge

[0051] 100 SMC composite material components (culvert components)

[0052] 110 Component body

[0053] 111 Uplift (uplift structure)

[0054] 112 groove (recessed structure)

[0055] 121 front connecting flange (front connecting mechanism)

[0056] 122 rear connection flange (rear connection mechanism)

[0057] 131 Left connecting flange

[0058] 132 Right connecting flange

[0059] 140 Reinforcement

[0060] 150 First support rib

[0061] 160 Second support rib

[0062] 170 Left side connecting flange reinforcement

[0063] 180 Right side connecting flange reinforcement

[0064] 190 Mounting holes

[0065] 200 Fixing parts

[0066] 201 Connecting bolt

[0067] 202 Connecting nut

[0068] 203 Connection gasket

[0069] 300 Culvert Assembly

[0070] 500 Cylindrical culvert

[0071] 600 Duct. DETAILED DESCRIPTION

[0072] The present disclosure is further described in detail below in conjunction with the accompanying drawings and implementations. It is understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the accompanying drawings.

[0073] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0074] Unless otherwise specified, the exemplary embodiments / embodiments shown will be understood as providing exemplary features of various details of some ways in which the technical concept of the present disclosure can be implemented in practice. Therefore, unless otherwise specified, the features of the various embodiments / embodiments can be combined, separated, interchanged and / or rearranged without departing from the technical concept of the present disclosure.

[0075] The use of cross-hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise specified, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the described order. In addition, the same figure numbers represent the same components.

[0076] When a component is referred to as being "on" or "over," "connected to," or "coupled to" another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being "directly on," "directly connected to," or "directly coupled to" another component, there are no intervening components. For this purpose, the term "connected" may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0077] For descriptive purposes, the present disclosure may use spatially relative terms such as "under," "beneath," "under," "down," "over," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, components described as "under" or "beneath" other components or features would subsequently be positioned "over" the other components or features. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0078] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0079] The following will describe the application of the present disclosure in culverts or ducts with reference to the accompanying drawings, so as to make the advantages of the present disclosure more clear.

[0080] In this embodiment, the SMC composite material component is implemented as a culvert component 100 by compression molding.

[0081] [SMC composite materials]

[0082] SMC composite material is the abbreviation of Sheet Molding Compounds, which is a sheet material made by compounding resin paste, chopped glass fiber and / or continuous glass fiber into a sheet, which is molded into the desired product in a mold under high temperature and high pressure.

[0083] The SMC composite material for preparing the culvert component 100 at least includes a continuous glass fiber upper layer and a continuous glass fiber lower layer, wherein the continuous glass fiber upper layer is composed of glass fiber long fiber bundles oriented along the longitudinal direction, and the continuous glass fiber lower layer is composed of glass fiber long fiber bundles intersecting the longitudinal direction.

[0084] In the present disclosure, continuous glass fibers are laid in both the longitudinal direction and the direction intersecting the longitudinal direction, so that the outer surface portion of the culvert member 100 can be mainly formed by the glass fiber long fiber bundles laid in the longitudinal direction, and the lower portion of the outer surface can be mainly formed by the glass fiber long fiber bundles laid in the longitudinal direction intersecting the longitudinal direction. In this way, the strength of the culvert member can be more effectively increased.

[0085] It should be noted that the continuous glass fibers described herein refer to relatively long glass fibers. Continuous glass fibers are formed by a wire drawing process, and are usually wound in a wire drawing machine for tens of minutes during production. The technical term relative to continuous glass fibers is "chopped glass fibers", that is, continuous glass fibers are cut into short fibers, such as a few centimeters long, for use. Traditional SMC sheets only provide a layer of chopped glass fibers, which are easy to flow and are easily mixed with the plastic components in the composite material to provide uniform reinforcement.

[0086] In addition, the continuous glass fiber used in the present disclosure is also different from the "glass fiber mesh cloth". The continuous glass fiber can be used for twisted or untwisted woven glass fiber cloth. The glass fiber mesh cloth itself has extremely outstanding strength, and thus may provide good special reinforcement for the local part of the product. However, the fibers in the glass fiber mesh cloth are entangled and constrained with each other, and the fluidity is very poor. The dispersion performance is significantly reduced, and even cannot be dispersed, which will bring adverse effects in the molding process, especially in products with more groove structures in the mold. It is difficult to provide reinforcement for the groove corresponding structure. The fibers in the continuous glass fiber in the present disclosure are not woven, that is, the continuous length of glass fibers are generally relatively independent of each other. Due to the lack of constraints between the continuous glass fibers, compared with the glass fiber mesh cloth, it has excellent mobility, and at the same time, it is not easy to block the movement of the chopped fibers in the adjacent chopped fiber layer. The continuous fiber is easy to enter the parallel grooves in the mold during the molding process, and it is also relatively easy to enter the smaller mold cavity in a bent posture. By using the added continuous glass fiber layer, the product strength of the culvert component is improved compared with the traditional SMC process. Furthermore, the glass fiber filaments of the continuous glass fiber layer can effectively enter the grooves of the mold cavity, especially the grooves arranged parallel to the fibers, so that each protruding wall portion of the molded product is effectively strengthened.

[0087] [Culvert components]

[0088] Figure 1 FIG. 1 is a schematic perspective view of a culvert component 100. The culvert component 100 is made of an SMC composite material in one piece by a molding process.

[0089] The culvert member 100 includes a member body 110 , a front connection mechanism 121 , a rear connection mechanism 122 , and a reinforcing rib 140 .

[0090] The component body has a longitudinal direction, and the cross section orthogonal to the longitudinal direction is arc-shaped. The component body is alternately arranged with multiple ridges and grooves in the longitudinal direction. The front connection mechanism is arranged at the longitudinal front end of the component body. The rear connection mechanism is arranged at the longitudinal rear end of the component body. Among them, the outer dimensions of the front connection mechanism and the rear connection mechanism are smaller than the outer dimensions of the component body. When more than two culvert components are connected front and back to form a culvert, the rear connection mechanism of the front culvert component is connected to the front connection mechanism of the rear culvert component, so as to avoid connecting more than two culvert components outside the culvert.

[0091] This can avoid connecting the culvert components outside the culvert during the construction process, thereby avoiding the difficulties caused by external connections of the culvert.

[0092] The component body 110 has a longitudinal direction (eg Figure 1 The X direction shown in FIG. 1 , or the “first direction”), and the cross section perpendicular to the longitudinal direction is arc-shaped or substantially arc-shaped.

[0093] On the outer surface (outer arc surface) of the component body 110, a plurality of ridges (ridge structures) 111 and grooves (recessed structures) 112 are alternately arranged, wherein the outer surface (outer arc surface) described here refers to: when a circumferentially closed cylindrical culvert component is formed, relative to the inner wall surface of the cylindrical culvert component, the other wall surface of the cylindrical culvert component, for example Figure 1 The wall surface shown in FIG. Multiple ridges 111 and grooves 112 are arranged alternately in the longitudinal direction. Figure 1 In the figure, for the sake of simplicity, not all grooves and protrusions are shown with reference numerals. A plurality of grooves 112 and a plurality of protrusions 111 may extend in the circumferential direction of the component body.

[0094] See attached Figure 2 , showing the cross-sectional linear shape of the corrugated structure of the present disclosure. The cross-sectional shape of the ridge 111 in the longitudinal direction is a semicircle, or a part of a semicircle, and the cross-sectional shape of the groove 112 in the longitudinal direction is a semicircle, or a part of a semicircle. In addition, the cross-sectional shapes of the ridge 111 and the groove 112 in the longitudinal direction can also be sinusoidal. In this way, after the culvert member 100 is formed by molding the SMC composite material, the formed culvert member 100 can be easily separated from the mold.

[0095] [Improvement of corrugated structure]

[0096] Attached Figure 3 and attached Figure 4 The improvement of the corrugated structure of the component body disclosed in the present invention is further schematically shown. To clearly show the improved structure, Figure 3 and Figure 4 Additional mechanisms such as reinforcing ribs are omitted and / or avoided.

[0097] The SMC composite material component (culvert component) 100 includes a component body 110, which includes a first surface (outer surface) 40 and a second surface (inner surface) 50. The corrugated structure is composed of recessed structures 112 and raised structures 111 alternately arranged in a first direction. Each recessed structure 112 and raised structure 111 extends in a second direction. The first direction is orthogonal to the second direction. The recessed structure on the first surface 40 corresponds to the raised structure on the second surface 50, and the raised structure on the first surface 40 corresponds to the recessed structure on the second surface 50.

[0098] The component body 110 is provided with thickened strips 20 arranged at intervals in the first direction, and the thickened strips have a first edge 70 and a second edge 80 extending in the second direction. Figure 3 As shown, non-thickened strips 10 are arranged adjacent to the front side of the first edge 70 in the first direction and adjacent to the rear side of the second edge 80 in the second direction, respectively. The thickness of the thickened strips is greater than that of the adjacent non-thickened strips.

[0099] like Figure 4 The AA cross-sectional view is schematically shown, that is, the cross-sectional view of the SMC composite material component 100 formed in the first direction. The first cross-sectional curve formed on the first surface 40 and the second cross-sectional curve formed on the second surface 50 can be observed. On the first cross-sectional curve and the second cross-sectional curve, the curve length between the first edge 70 and the second edge 80 of the thickened strip 20 is respectively greater than the curve length between the adjacent crest and trough of a corrugated structure (1 unit curve length). The curve length mentioned here is to describe that the thickened strip 20 needs to cover a sufficiently wide range, and does not mean that the first edge 70 and the second edge 80 must be positioned on the corrugated structure. Figure 4 As an example, the thickened strip 20 includes one crest and two troughs, that is, 2 unit curve lengths, or covers one corrugated structural unit.

[0100] Variations of the thickened strip 20 include covering more unit curve lengths, such as 2.25, 2.5 or 3 unit curve lengths, and so on.

[0101] The increased thickness portion of the thickened strip 10 may protrude from the inner surface 50 of the component body 110 or from the outer surface 40 of the component body 110. The thickened portion of the thickened strip 20 corresponds to the design of the mold. One way is to modify the conventional mold that previously formed the corrugated structure. For example, the mold is repaired at the position corresponding to the thickened strip on the upper mold or the lower mold of the mold to form a further concave portion corresponding to the thickened structure of the molded product.

[0102] The thickness in the thickened strip 10 region is 1.5-3 times, preferably 1.8-2.2 times, the thickness in the non-thickened strip 20 region. In Example 1, the thickness is about twice the thickness of the non-thickened strip 20, that is, the thickened strip 10 is about 1 times thicker than the non-thickened strip 20.

[0103] The thickened portion is formed on the outer surface or the inner surface of the component, which is considered in conjunction with the specific application scenario.

[0104] like Figure 1 As shown, the culvert member 100 of the first embodiment is an arc-shaped plate, and the first direction corresponds to the x direction. The cross section of the member body (plate-shaped body) 110 orthogonal to the first direction is arc-shaped, and the surface of the member body 110 close to the center of the circle is the inner surface (second surface) 50, and the surface away from the center of the circle is the outer surface (second surface) 40.

[0105] In the present embodiment 1, the thickened strip 20 is arranged on the inner surface 50 of the component body 110, that is, it is more protruding or more bulging than the corresponding portion of the non-thickened strip 10. In accordance with the application of the culvert component 100, it is hoped to further reduce the configuration change of the outer part of the culvert, and avoid stress concentration and other unfavorable factors when the culvert is laid underground under the condition of external load bearing.

[0106] Since the thickened strip 20 is set to be merged with the original corrugated structure, the shape changes smoothly and gently. Furthermore, when repairing or designing the mold, the thickness of the thickened strip 20 and the adjacent non-thickened strip 10 is set to be gradual, further forming a smooth connection with a gentle transition. Therefore, although an additional reinforcement structure is set on the inner surface of the culvert component 100, the impact on the internal fluid resistance is not significant. This is particularly beneficial for culvert applications.

[0107] like Figure 3 and Figure 4 As shown, in Embodiment 1, in the first direction, the thickened strips 20 are arranged at substantially the same spacing distance. At the front end in the first direction, the front edge is provided with a front connecting flange 121 to provide a reinforcement effect, and adjacent to the front connecting flange 121 is the first non-thickened strip 10, which covers approximately 3 corrugated structural units, and in the first direction, toward the rear, next to the first thickened strip 20, followed by the second non-thickened strip 10, and the second thickened strip 20, and so on. In this way, the non-thickened strips 10 are arranged at substantially equal intervals, thereby providing a uniform reinforcement effect.

[0108] [Dimensions of example components]

[0109] The dimensions of specific products vary according to specific applications. In culvert applications, the length of the SMC molded component in the first direction is 800mm-4000mm, preferably 2500mm-3000mm; the length in the second direction (the distance between two opposite edges) is 800mm-4000mm, preferably 1500mm-1800mm; the thickness of the non-thickened strip is 4-15mm, preferably 8-10mm; the width of the thickened strip is 100mm-300mm, preferably 225mm; the depth of the corrugated structure is 25mm-100mm, preferably 50mm; the cross-sectional shape of the corrugated structure in the first direction is a sin curve. The thickened strips are arranged at approximately the same spacing, which is 300-1000mm, preferably 600mm.

[0110] [Culvert components, culverts and culverts]

[0111] Figure 5 An example cross-sectional view of a culvert assembly 300 formed by three culvert members is shown. The present disclosure also provides a cylindrical culvert assembly 300, comprising the culvert member 100 as described above, wherein the left connecting flange 131 of one culvert member 100 of two or more culvert members 100 is connected to the right connecting flange 132 of another culvert member to assemble into a circumferentially closed cylindrical culvert assembly 300.

[0112] Those skilled in the art should understand that two culvert components may be used to form the culvert assembly 300 . Of course, when the required culvert has a larger diameter, more than three culvert components may be used to form the culvert assembly 300 .

[0113] According to the present disclosure, a cylindrical culvert 500 is further provided, which is formed by connecting the above-mentioned cylindrical culvert assemblies 300 in sequence in the longitudinal direction. Optionally, one cylindrical culvert assembly 300 is connected to another cylindrical culvert assembly 300 at a predetermined angle in the circumferential direction to assemble the cylindrical culvert 500.

[0114] According to another embodiment of the present disclosure, Figure 7 By way of example, a duct component and a duct 600 that can be assembled are provided. The duct component can be assembled from arc-shaped duct components and planar duct components. Except for the shape restriction, the arrangement of each duct component can be the same as the above-mentioned duct component, which will not be described in detail here.

[0115] [Performance test]

[0116] 1. Cutting standard specimens of the culvert components made in the present disclosure for testing

[0117]

[0118] *Simply testing the strength of a standard test specimen cannot explain the effect of the thickening tape, but it can show the performance of the material itself.

[0119] 2. Comparative test of products without and with thickening belts

[0120] The relationship between the load and deformation of the three-piece circular tube before the thickening belt is changed

[0121]

[0122] * Load-bearing and deformation (taking diameter 2000mm as an example) Comparative test of culvert products with and without thickening belts (test sample: inner diameter 2000mm, wave width 150mm, wave height 50mm, single section length 3000mm, wall thickness 8mm; sample with thickening belt: wall thickness at the thickening belt position is 16mm)

[0123] The relationship between the load and deformation of the three-piece circular tube after the thickening belt is changed

[0124]

[0125] 3. Comparative test data: Relationship between load and deformation of pressed steel bellows

[0126]

[0127] *Steel bellows wall thickness 3.8mm, inner diameter 1900mm, outer diameter 1960mm, single section length 3800mm

[0128] 4. Single piece pressure test

[0129]

[0130] In the description of the specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0131] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0132] The present disclosure includes at least the following concepts:

[0133] Concept 1 An SMC composite material component is integrally formed by a molding process, comprising a component body having a corrugated structure, the component body comprising a first surface and a second surface, the corrugated structure is composed of a recessed structure and a raised structure alternately arranged in a first direction, each of the recessed structure and the raised structure extends in a second direction, the first direction is orthogonal to the second direction, the recessed structure on the first surface corresponds to the raised structure on the second surface, and the raised structure on the first surface corresponds to the recessed structure on the second surface, characterized in that,

[0134] The component body is provided with thickened strips arranged at intervals in the first direction, the thickened strips having a first edge and a second edge extending in the second direction, non-thickened strips are arranged adjacent to the first edge and the second edge, respectively, and the thickness of the thickened strips is greater than the thickness of the adjacent non-thickened strips,

[0135] Among them, when observing a first cross-sectional curve formed on the first surface or a second cross-sectional curve formed on the second surface on a cross-sectional surface of the SMC composite material component formed along a first direction, the length between the first edge and the second edge of each thickened strip on the first cross-sectional curve or the second cross-sectional curve is set to be the curve length between 1 to 6 adjacent peaks and troughs of the corrugated structure.

[0136] Concept 2: The SMC composite material component according to Concept 1, characterized in that the length between the first edge and the second edge of each thickened strip is set to 1.25 to 3 curve lengths between adjacent crests and troughs of the corrugated structure.

[0137] Concept 3: The SMC composite material component according to Concept 1 or 2, characterized in that each of the thickened strips covers a corrugated structure, namely, one crest and two troughs, or one trough and two crests.

[0138] Concept 4: An SMC composite material component according to any one of Concepts 1-3, characterized in that each of the non-thickened strips covers an area of ​​about 1.5-2.5 corrugated structural units.

[0139] Concept 5: An SMC composite material component according to any one of Concepts 1-3, characterized in that each of the non-thickened strips covers an area of ​​about 3 corrugated structural units.

[0140] Concept 6: The SMC composite material component according to any one of Concepts 1-5, characterized in that the thickness in the thickened strip area is 1.5-3 times the thickness of the non-thickened strip area.

[0141] Concept 7: The SMC composite material component according to Concept 6, characterized in that the thickness in the thickened strip area is 1.8-2.2 times the thickness of the non-thickened strip area.

[0142] Concept 8 The SMC composite member according to any one of Concepts 1-7, wherein in the first direction, the thickened strips are arranged at substantially the same interval distance.

[0143] Concept 9: According to the SMC composite material component described in Concept 1, the cross-section of the component body orthogonal to the first direction is arc-shaped, the surface of the component body close to the center of the circle is the first surface serving as the inner surface of the component body, and the surface away from the center of the circle is the second surface serving as the outer surface of the component body.

[0144] Concept 10. The SMC composite material component according to Concept 9, wherein the increased thickness portion of the thickened strip protrudes from the inner surface of the component body.

[0145] Concept 11: The SMC composite material component according to any one of Concepts 1-10, characterized in that the thickness of the thickened strip and the adjacent non-thickened strip is gradually changed.

[0146] Concept 12: The SMC composite material component according to any one of Concepts 1-6, characterized in that the thickness of the non-thickened strip is substantially uniformly distributed except for the boundary areas near the two ends in the first direction and the boundary areas near the two ends in the second direction.

[0147] Concept 13. An SMC composite material component according to any one of Concepts 1-4, characterized in that the cross-sectional shape of the corrugated structure in the first direction is a sinusoidal curve.

[0148] Concept 14: An SMC composite material component according to any one of Concepts 1-5, characterized in that the length of the SMC molded component in the first direction is 2500mm-3000mm.

[0149] Concept 15: An SMC composite material component according to any one of Concept 14, characterized in that a distance between two opposite edges of the SMC molded component in the second direction is 1500 mm-1800 mm.

[0150] Concept 16 According to any one of Concepts 14 or 15, the thickness of the non-thickened strips of the molded component body is in the range of 8-10 mm.

[0151] Concept 17: According to Concept 16, the SMC composite material component, the thickness in the thickened strip is 6-20 mm greater than the thickness increase in the non-thickened strip area.

[0152] Concept 18. According to any one of Concepts 14-17, the SMC composite material component has a width of 150 mm to 300 mm.

[0153] Concept 19. The SMC composite material component according to any one of Concepts 14-18, wherein the depth of the valley recess is in the range of 25 mm to 100 mm.

[0154] Concept 20: According to any one of Concepts 14-19, the spacing between the center lines of each thickened strip is 300-1000 mm.

[0155] Concept 21. The SMC composite material component according to any one of Concepts 1-20, further comprising:

[0156] A front connection mechanism, arranged at the longitudinal front end of the component body; and

[0157] The rear connection mechanism is arranged at the longitudinal rear end of the component body.

[0158] When two or more SMC composite material components are connected front and back to form a pipe or a slot, the rear connection mechanism of the front SMC composite material component is connected to the front connection mechanism of the rear SMC composite material component.

[0159] Concept 22: The SMC composite material component according to Concept 21, characterized in that the front connecting mechanism is a front connecting flange, the rear connecting mechanism is a rear connecting flange, the front connecting flange and the rear connecting flange protrude inwardly or outwardly relative to the component body so as to connect the front and rear culvert components inside the culvert.

[0160] Concept 23: An SMC composite material component according to Concept 21 or 22, characterized in that it also includes a left connecting mechanism and a right connecting mechanism, wherein the left connecting mechanism and the right connecting mechanism are respectively arranged at both ends of the second direction and extend along the first direction, and when more than two of the components are circumferentially connected to form a pipe fitting or a groove fitting, the right connecting mechanism of an SMC composite material component located on the left is connected to the left connecting mechanism of an SMC composite material component located on the right.

[0161] Concept 24 A culvert assembly, characterized by comprising the SMC composite material component described in Concepts 1-23, wherein two or more SMC composite material components are connected and assembled into a circumferentially closed culvert assembly.

[0162] Concept 25. A culvert, characterized in that it is composed of the culvert components according to Concept 24 connected in sequence in the longitudinal direction.

[0163] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. An SMC composite material component, integrally formed by a molding process, comprising a component body with a corrugated structure, the component body comprising a first surface and a second surface, the corrugated structure is composed of a recessed structure and a raised structure alternately arranged in a first direction, each of the recessed structure and the raised structure extends in a second direction, the first direction is orthogonal to the second direction, the recessed structure on the first surface corresponds to the raised structure on the second surface, and the raised structure on the first surface corresponds to the recessed structure on the second surface, characterized in that: The component body is provided with thickened strips arranged at intervals in the first direction, the thickened strips having a first edge and a second edge extending in the second direction, non-thickened strips are arranged adjacent to the first edge and the second edge, respectively, and the thickness of the thickened strips is greater than the thickness of the adjacent non-thickened strips, Among them, when observing a first cross-sectional curve formed on the first surface or a second cross-sectional curve formed on the second surface on a cross-sectional surface of the SMC composite material component formed along a first direction, on the first cross-sectional curve or the second cross-sectional curve, the length between the first edge and the second edge of each thickened strip is set to be the length of the curve between 1 to 6 adjacent peaks and troughs of the corrugated structure.

2. The SMC composite material component according to claim 1, characterized in that: Each of the thickened strips covers a corrugated structure, ie, one wave crest and two wave valleys, or one wave valley and two wave crests.

3. The SMC composite material component according to claim 1, characterized in that: Each of the non-thickened strips covers an area of ​​1.5-2.5 corrugated structural units.

4. The SMC composite material component according to claim 1, characterized in that: Each of the non-thickened strips covers an area of ​​3 corrugated structural units.

5. The SMC composite material component according to claim 1, characterized in that: The thickness in the thickened strip area is 1.5-3 times the thickness in the non-thickened strip area.

6. The SMC composite material component according to claim 5, characterized in that: The thickness in the thickened strip area is 1.8-2.2 times the thickness in the non-thickened strip area. 7 . The SMC composite material component according to claim 1 , wherein in the first direction, the thickened strips are arranged at the same interval distance.

8. The SMC composite material component according to claim 1, wherein a cross section of the component body orthogonal to the first direction is arc-shaped, a surface of the component body close to the center of the circle is the first surface serving as the inner surface of the component body, and a surface away from the center of the circle is the second surface serving as the outer surface of the component body.

9. The SMC composite material component according to claim 7, characterized in that: The increased thickness portion of the thickened strip protrudes from the inner surface of the component body.

10. The SMC composite material component according to claim 1, characterized in that: The thickness of the thickened strip and the adjacent non-thickened strip changes gradually.

11. The SMC composite material component according to claim 1, characterized in that: Except for the boundary regions close to the two ends in the first direction and the two ends in the second direction, the thickness of the non-thickened strip is evenly distributed.

12. The SMC composite material component according to claim 1, characterized in that The cross-sectional shape of the corrugated structure in the first direction is a sinusoidal curve.

13. The SMC composite material component according to claim 1, characterized in that: The length of the SMC composite material component in the first direction is 2500 mm-3000 mm.

14. The SMC composite material component according to claim 1, characterized in that: The distance between two opposite edges of the SMC composite material component in the second direction is 1500 mm-1800 mm. 15 . The SMC composite material component according to claim 14 , wherein the thickness of the non-thickened strip of the component body is in the range of 8-10 mm. 16 . The SMC composite material component according to claim 15 , wherein the thickness in the thickened strip is 6-20 mm greater than the thickness increase in the non-thickened strip region. 17 . The SMC composite material component according to claim 1 , wherein the width of the thickened strip is 150 mm to 300 mm. The SMC composite material component according to claim 1 , wherein the recessed depth of the wave valley is 25 mm-100 mm.

19. The SMC composite material component according to claim 1, wherein the spacing between the center lines of the thickened strips is 300-1000 mm.

20. The SMC composite material component according to any one of claims 1 to 19, characterized in that: Further including: A front connection mechanism, arranged at the longitudinal front end of the component body; as well as The rear connection mechanism is arranged at the longitudinal rear end of the component body. When two or more SMC composite material components are connected front and back to form a pipe or a slot, the rear connection mechanism of the front SMC composite material component is connected to the front connection mechanism of the rear SMC composite material component.

21. The SMC composite material component according to claim 20, characterized in that: The front connection mechanism is a front connection flange, and the rear connection mechanism is a rear connection flange. The front connection flange and the rear connection flange protrude inwardly or outwardly relative to the component body so as to connect the front and rear culvert components inside the culvert.

22. The SMC composite material component according to claim 21, characterized in that: It also includes a left-side connecting mechanism and a right-side connecting mechanism, which are respectively arranged at two ends of the second direction and extend along the first direction. When more than two SMC composite material components are circumferentially connected to form a pipe or a groove, the right-side connecting mechanism of an SMC composite material component located on the left is connected to the left-side connecting mechanism of an SMC composite material component located on the right.

23. The SMC composite material component according to claim 1, characterized in that: The length between the first edge and the second edge of each thickened strip is set to be 1.25 to 3 times the length of the curve between adjacent wave crests and wave troughs of the corrugated structure.

24. A culvert assembly, characterized in that: The invention comprises the SMC composite material component according to any one of claims 1 to 23, and two or more SMC composite material components are connected and assembled into a circumferentially closed culvert assembly.

25. A culvert, characterized in that: The culvert assembly according to claim 24 is connected in sequence in the longitudinal direction.

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