Bamboo winding composite arch bridge
Through the bamboo-wrapped composite arch bridge structure, the combination of bamboo strip curtains and resin is used to solve the problems of unenvironmental protection, high cost and low construction efficiency of existing arch bridge materials, and achieve green and environmentally friendly, low cost and simple construction effects.
Patent Information
- Application Number
- CN202421174657.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The existing arch bridge structural materials are not environmentally friendly, have high cost and low construction efficiency.
The bamboo-wrapped composite arch bridge structure is adopted, and a structural layer is formed by wrapping bamboo curtains and impregnating resin, combined with the protective layer and the bridge deck layer to form an environmentally friendly, renewable, and low-cost arch bridge structure.
It effectively solved the problems of unenvironmental protection and cumbersome construction of the original arch bridge materials. It adopted a combined structure of bamboo and resin to achieve the effect of green and environmental protection, simple construction and low cost.
Smart Images
Figure CN222525149U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of arch bridge structures, in particular to a bamboo-wrapped composite arch bridge. Background Art
[0002] An arch bridge refers to a bridge with an arch as the main load-bearing structural component within a resin plane. It is mainly built with stone, brick, concrete, reinforced concrete, steel and other materials. The raw materials are non-renewable resources and have high energy consumption, are not environmentally friendly, have complicated construction procedures, low efficiency, long construction period and high cost. Utility Model Content
[0003] The utility model aims to overcome the deficiencies of the prior art and provide a bamboo-wrapped composite arch bridge to solve the technical problems of the prior arch bridge structure being environmentally unfriendly, costly and inefficient.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] The embodiment of the utility model provides a bamboo winding composite arch bridge, which comprises:
[0006] A structural layer, wherein the structural layer is arched;
[0007] A protective layer, the protective layer being arranged on the inner side of the structural layer;
[0008] A bridge deck layer, the bridge deck layer is arranged on the outer side of the structural layer, and the bridge deck layer has a bridge deck;
[0009] Wherein, the structural layer comprises: a bamboo winding structural layer and a resin infiltrated or poured on the bamboo winding layer.
[0010] Wherein, the bamboo winding layer comprises: a bamboo strip curtain wound on the protective layer, and the bamboo strip curtain is spirally wound along the axial direction of the protective layer.
[0011] The bamboo strip curtain comprises: a plurality of bamboo strip pieces and a braided wire connecting the bamboo strip pieces together, and the plurality of bamboo strip pieces are arranged in parallel at equal intervals.
[0012] The bamboo strip curtain comprises a mesh cloth and a plurality of bamboo strip pieces attached to the mesh cloth, wherein the plurality of bamboo strip pieces are arranged in parallel at equal intervals.
[0013] Wherein, the length of the bamboo strips ranges from 20 to 300 mm.
[0014] Wherein, the width of the bamboo strips ranges from 1 to 30 mm.
[0015] Wherein, the thickness of the bamboo strips is in the range of 0.2-2 mm.
[0016] Wherein, the moisture content of the bamboo strips is 3-20%.
[0017] Wherein, the protective layer is a waterproof and anti-corrosion material layer.
[0018] Wherein, the bridge deck layer is a layer of wood, stone, concrete or steel.
[0019] The bamboo-wrapped composite arch bridge of the utility model can effectively solve the problems of the original arch bridge materials being environmentally unfriendly and the complicated construction. The bamboo-wrapped arch bridge adopts bamboo materials, which are renewable raw material resources, green and environmentally friendly, and simple and convenient to construct.
[0020] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 The figure is a schematic diagram of the overall structure of a bamboo-wrapped composite arch bridge according to an embodiment of the utility model.
[0022] Figure 2 This is a schematic structural diagram of another implementation of the bamboo-wrapped composite arch bridge of an embodiment of the utility model. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "resin", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0026] 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 one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0030] See also Figure 1 , this embodiment provides a bamboo winding composite arch bridge, which includes:
[0031] A structural layer 11, wherein the structural layer 11 is arched;
[0032] A protective layer 12, wherein the protective layer 12 is disposed on the inner side of the structural layer 11;
[0033] A bridge deck layer 13, wherein the bridge deck layer 13 is disposed on the outer side of the structural layer 11, and the bridge deck layer 13 has a bridge deck;
[0034] The structural layer 11 includes: a bamboo winding structural layer and a resin infiltrated or poured on the bamboo winding layer. The bamboo winding layer is the main supporting structure of the structural layer 11, and the resin is used to solidify and connect the bamboo winding layer to make it have better toughness and durability. It should be noted that the amount of bamboo material and resin in the bamboo winding layer depends on the actual situation and is not particularly limited. That is, in this embodiment, the structural layer 11 is a combination structure of the bamboo winding layer and the resin, rather than a specific material composition.
[0035] Furthermore, the bamboo winding layer includes: a bamboo strip curtain wound on the protective layer 12 , and the bamboo strip curtain is spirally wound along the axial direction of the protective layer 12 .
[0036] The bamboo strip curtain comprises: a plurality of bamboo strip pieces and a braided wire connecting the bamboo strip pieces together, and the plurality of bamboo strip pieces are arranged in parallel at equal intervals.
[0037] In another embodiment, the bamboo strip curtain may further include: a mesh cloth and a plurality of bamboo strip pieces attached to the mesh cloth. Similarly, the plurality of bamboo strip pieces are arranged in parallel at equal intervals.
[0038] In this embodiment, the length of the bamboo strips is in the range of 20-300 mm. Preferably, the length of the bamboo strips is in the range of 180-200 mm, and this embodiment uses a bamboo strip of 200 mm in length.
[0039] The width of the bamboo strips is in the range of 1-30 mm, and preferably, the width of the bamboo strips is in the range of 4-5 mm.
[0040] The thickness of the bamboo strips is in the range of 0.2-2 mm, and preferably, the thickness of the bamboo strips is in the range of 0.8-1 mm.
[0041] The moisture content of the bamboo strips is 3-20%, preferably 6%-15%, and more preferably 7%-13%. The use of bamboo strips with the above moisture content can minimize the moisture in the bamboo strips and reduce the porosity, so that the resin can easily penetrate into the bamboo strips and fill the pores, thereby increasing the composite performance of the bamboo strips and the resin, which is beneficial to the stable and uniform filling of the resin, and can better synchronize the resin curing in the subsequent curing process.
[0042] It should be noted that the above only describes the length, width and thickness of bamboo strips that are generally used. In other embodiments, bamboo strips of other sizes can be used for manufacturing according to the functional parameter requirements of the arch bridge structure.
[0043] In this embodiment, the protective layer 12 is a waterproof and anti-corrosion material layer.
[0044] The bridge deck layer 13 is a layer of wood, stone, concrete or steel.
[0045] Please refer again Figure 2 , which is a structural schematic diagram of a bamboo-wrapped composite arch bridge in another embodiment, the bamboo-wrapped composite arch bridge also includes: a structural layer 21, a protective layer 22 and a bridge deck layer 23 respectively arranged on the two sides of the structural layer, the structural layer 21 and the protective layer 22 are completely the same as the structural layer 11 and the protective layer 12 of the above embodiment in structure and material. The only difference is that in this embodiment, the top of the bridge deck layer 23 is a flat structure, while the top surface of the bridge deck layer 13 in the above embodiment is a step-shaped structure arranged symmetrically on the left and right.
[0046] The following is a brief description of the processing process of the bamboo wrapped composite arch bridge:
[0047] The structural layer 11 (21) of the arch bridge is in the shape of an arc. A large tubular bamboo winding product is first produced and cut along the axial direction to be divided into two or more arc surfaces, which can be used as the structural layer of the arch bridge. The resin of the structural layer 11 (21) is a flame retardant amino resin. Amino resin has good wettability with bamboo, and the use of flame retardant amino resin can improve the fire resistance of the structural layer. The waterproof and corrosion-resistant material of the protective layer 12 (22) can specifically be one of polyurea resin, polyester resin, polyurethane resin, epoxy resin, asphalt, and waterproof roll material. The cross-section of the structural layer 11 (21) is circular or elliptical, and the arc length can be a semicircle or other curvature.
[0048] The arch bridge deck 13 (23) is constructed of materials such as wood, stone, brick, concrete, reinforced concrete, steel, etc. It can be a flat surface or a sloped deck, and can be steps or a slope.
[0049] Firstly, a large tubular bamboo winding product is produced and cut along the axis direction to be divided into two or more arc surfaces, which can be used as the structural layer of the arch bridge.
[0050] The resin-impregnated bamboo strips are wound into a cylindrical structure by spirally winding a bamboo strip curtain woven from bamboo strips on the protective layer along the axial direction, and then curing it by pouring or dipping it in combination with resin. The preferred winding method is to spirally wind it on the protective layer along the axial direction of the pipeline, and each winding layer preferably has a certain overlap width, and then pouring or dipping it in combination with resin impregnation and curing it.
[0051] Among them, the bamboo strip curtain is composed of a plurality of bamboo strips arranged in parallel and spaced equidistantly in the width direction, and connected by a braided wire, so as to form a bamboo strip curtain with a certain length and width. In one embodiment, it is preferred that the parallel bamboo strips can be bonded to the mesh cloth by resin, so that the bamboo strips can keep the interval unchanged when winding. The bamboo strips are made of raw bamboo into bamboo strips, for example, a certain length of raw bamboo tube is split in the radial direction to form a plurality of bamboo strips, and the bamboo strips are cut along the length direction of the bamboo strips after removing the inner surface bamboo yellow and the outer surface bamboo green. The prepared bamboo strips can preferably be pre-treated before winding, for example, they can be dried first; or they can be immersed in a NaOH solution with a mass concentration of 1-10%, soaked at 20-80°C for 5-48 hours for degreasing, and then washed and dried. The arch bridge structural layer is pre-produced in the workshop and can be directly constructed when transported to the construction site, and the bridge deck material is paved on the structural layer according to the design.
[0052] The bamboo-wrapped composite arch bridge of this embodiment is connected into an arch bridge at the construction site in the form of prefabricated structural layers, which greatly reduces the amount of engineering work, makes construction convenient, reduces the engineering period, and has a low cost. The structural layer is processed in a workshop. The structural layer, as a bearing structure, is the main part of the arch bridge. It is formed by winding bamboo with a certain strength in combination with resin. It is green, environmentally friendly, and renewable in resources. The winding method can give full play to the axial tensile strength of the bamboo, so that the bamboo is in a tensioned state. The prepared structural layer has high mechanical properties. At the same time, the excellent elastic modulus of the bamboo makes the prepared arch bridge have strong deformation resistance. It has better earthquake resistance and geological settlement resistance than arch bridges built with stone, brick, concrete, reinforced concrete, steel and other materials, so that it has lower requirements on foundation strength.
[0053] The above examples are only used to further illustrate the technical content of the utility model, so that readers can understand it more easily, but it does not mean that the implementation methods of the utility model are limited to this. Any technical extension or re-creation made based on the utility model is protected by the utility model. The protection scope of the utility model shall be based on the claims.
Claims
1. A bamboo-wrapped composite arch bridge, characterized in that: include: A structural layer, wherein the structural layer is arched; A protective layer, the protective layer being arranged on the inner side of the structural layer; A bridge deck layer, the bridge deck layer is arranged on the outer side of the structural layer, and the bridge deck layer has a bridge deck; Wherein, the structural layer comprises: a bamboo winding structural layer and a resin infiltrated or poured on the bamboo winding structural layer.
2. The bamboo-wrapped composite arch bridge according to claim 1, characterized in that: The bamboo winding structure layer comprises: a bamboo strip curtain wound on the protective layer, and the bamboo strip curtain is spirally wound along the axial direction of the protective layer.
3. The bamboo-wrapped composite arch bridge according to claim 2, characterized in that: The bamboo strip curtain comprises: a plurality of bamboo strip pieces and a braided wire connecting the bamboo strip pieces together, and the plurality of bamboo strip pieces are arranged in parallel at equal intervals.
4. The bamboo-wrapped composite arch bridge according to claim 2, characterized in that: The bamboo strip curtain comprises a mesh cloth and a plurality of bamboo strip pieces attached to the mesh cloth, wherein the plurality of bamboo strip pieces are arranged in parallel with equal intervals.
5. The bamboo-wrapped composite arch bridge according to claim 3 or 4, characterized in that: The length of the bamboo strips ranges from 20 to 300 mm.
6. The bamboo-wrapped composite arch bridge according to claim 5, characterized in that: The width of the bamboo strips ranges from 1 to 30 mm.
7. The bamboo-wrapped composite arch bridge according to claim 6, characterized in that: The thickness of the bamboo strips ranges from 0.2 to 2 mm.
8. The bamboo-wrapped composite arch bridge according to claim 3 or 4, characterized in that: The moisture content of the bamboo strips is 3-20%.
9. The bamboo-wrapped composite arch bridge according to claim 2, characterized in that: The protective layer is a waterproof and anti-corrosion material layer.
10. The bamboo-wrapped composite arch bridge according to claim 2, characterized in that: The bridge deck layer is a layer of wood, stone, concrete or steel.