Multifunctional UHPC well lid device based on multilayer structure design

Abstract

The utility model discloses a multi-layer structural design-based multifunctional UHPC well lid device, which comprises a well seat and a well lid, a clamping groove is arranged on the well seat, the well lid is arranged in the clamping groove, and the well lid comprises a metal frame, a reinforcing rib and a filling layer; the distribution structure of the reinforcing ribs in the well lid is optimized, the top-layer rib net and the bottom-layer rib net are arranged in the area with large stress in the well lid, and the area with low stress is covered with the middle-layer rib net, so that the overall bearing capacity is effectively improved, the using amount of the reinforcing ribs can be saved, and the product cost is reduced. In addition, by arranging different coatings, the functionality of the well lid is improved, and the using effect of the well lid is improved. Compared with a traditional well lid, the well lid device has the advantages that the overall bearing capacity can be improved, the strength is high, the service life is long, and the cost of the well lid can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole covers, and more specifically, particularly relates to a multifunctional UHPC manhole cover device based on a multilayer structure design. Background Art

[0002] Manhole covers can be seen everywhere in green belts, sidewalks, and motorway lanes. Their function is to cover the wellheads, drainage and pipeline entrances and exits of underground passages, facilitate underground operations, and prevent people or objects from falling. Currently, common manhole covers are mainly divided into cast iron, polymer and ordinary concrete manhole covers. Ordinary concrete has low bearing capacity and is not corrosion-resistant, and is facing elimination. Polymer manhole covers, mainly resin manhole covers, have the disadvantages of easy aging, poor durability, especially not resistant to ultraviolet rays and other climates, and weak bearing capacity. Cast iron manhole covers are prone to rust and have a small bearing capacity. They are also easy to be stolen and make a lot of noise when driving. Utility Model Content

[0003] The utility model provides a multifunctional UHPC manhole cover device based on a multilayer structure design to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A multifunctional UHPC manhole cover device based on a multilayer structure design, comprising a manhole seat and a manhole cover;

[0006] The well seat is provided with a clamping groove, and the well cover is arranged in the clamping groove;

[0007] The manhole cover comprises a frame, reinforcing ribs and a filling layer;

[0008] The reinforcing ribs are arranged in the frame, the filling layer is arranged between the frame and the reinforcing ribs, and a plurality of cylindrical protrusions are evenly distributed on the top of the filling layer;

[0009] The reinforcing ribs include a top-layer rib mesh and a middle-layer rib mesh, both of which are arranged at the center of the frame, and the area of ​​the top-layer rib mesh is smaller than that of the middle-layer rib mesh; the top-layer rib mesh includes a plurality of top-layer horizontal ribs and a plurality of top-layer vertical ribs, and the top-layer horizontal ribs and the top-layer vertical ribs are arranged perpendicular to each other; the middle-layer rib mesh includes a plurality of middle-layer horizontal ribs and a plurality of middle-layer vertical ribs, and the middle-layer horizontal ribs and the middle-layer vertical ribs are arranged perpendicular to each other;

[0010] The filling layer is a UHPC filling layer, and the well seat is a UHPC well seat.

[0011] Preferably, the top layer horizontal ribs have the same diameter and length as the top layer vertical ribs, the middle layer horizontal ribs have the same diameter and length as the middle layer vertical ribs, and the diameter and length of the top layer horizontal ribs are smaller than those of the middle layer horizontal ribs; the top layer vertical ribs, the top layer horizontal ribs, the middle layer horizontal ribs and the middle layer vertical ribs are arranged in the frame in sequence from top to bottom.

[0012] Preferably, the reinforcing ribs further include a bottom rib mesh, the bottom rib mesh includes a plurality of bottom horizontal ribs and a plurality of bottom vertical ribs, and the bottom horizontal ribs and the bottom vertical ribs are arranged perpendicular to each other.

[0013] Preferably, the reinforcing ribs are steel fiber reinforcing ribs or engineering fiber reinforcing ribs.

[0014] Preferably, the surface of the reinforcing rib is roughened to make it a rough surface.

[0015] Preferably, the outer surfaces of the manhole cover and the manhole seat are respectively provided with outer claddings, and the outer claddings are UHPC outer claddings.

[0016] Preferably, a plurality of limiting protrusions are provided on the periphery of the well seat, and a plurality of limiting protrusions are distributed on the periphery of the clamping groove in a circular array structure.

[0017] Preferably, a layer of waterproof and anti-seepage coating is provided on the surface of the manhole cover and the manhole seat, and the material of the waterproof and anti-seepage coating is methyl methacrylate, and the thickness thereof is 200 nm.

[0018] Preferably, a functional coating layer is provided on the surface of the manhole cover; the functional coating layer is an inorganic pigment coating, a fluorescent phase change material coating or a reflective material coating; a methyl methacrylate coating layer with a thickness of 200 to 300 nm is sprayed on the outside of the functional coating layer.

[0019] Preferably, the frame is a metal frame.

[0020] Preferably, the diameter of the manhole cover is 900 mm, which is larger than the size of conventional manhole covers. Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model adopts UHPC material to make manhole covers and manhole seats, so that the manhole covers and manhole seats have the advantages of anti-corrosion, anti-theft, noise reduction, and not easy to age, and have good load-bearing capacity and a large safety margin coefficient. By optimizing the distribution structure of the internal reinforcement ribs of the manhole cover, the top layer and bottom layer of reinforcement nets are set in the areas with greater force in the manhole cover, and the areas with less force are covered with the middle layer of reinforcement nets, which effectively improves the overall load-bearing capacity and saves the amount of reinforcement ribs to reduce product costs. In addition, by setting different coatings, the functionality of the manhole cover is increased and the use effect of the manhole cover is improved. Compared with traditional manhole covers, the manhole cover device of the utility model can improve the overall load-bearing capacity, has high strength and long service life, and can effectively reduce the cost of the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of a multifunctional UHPC manhole cover device based on a multilayer structure design according to an embodiment of the utility model;

[0022] Figure 2 This is a structural diagram of a multifunctional UHPC manhole cover device based on a multilayer structure design according to an embodiment of the utility model;

[0023] Figure 3 A structural diagram of a manhole seat of a multifunctional UHPC manhole cover device based on a multi-layer structure design according to an embodiment of the utility model;

[0024] Figure 4 A cross-sectional view of a manhole seat of a multifunctional UHPC manhole cover device based on a multi-layer structure design according to an embodiment of the utility model;

[0025] Figure 5 A manhole cover structure diagram of a multifunctional UHPC manhole cover device based on a multilayer structure design according to an embodiment of the utility model;

[0026] Figure 6 A side view of a manhole cover of a multifunctional UHPC manhole cover device based on a multilayer structure design according to an embodiment of the utility model;

[0027] Figure 7 This is a top layer rib mesh structure diagram of a multifunctional UHPC manhole cover device based on a multi-layer structure design according to an embodiment of the utility model;

[0028] Figure 8 The structural diagram of the middle layer reinforcement net and the bottom layer reinforcement net of the multifunctional UHPC manhole cover device based on the multilayer structure design of the embodiment of the utility model;

[0029] Fig. 9 A side cross-sectional view of a manhole cover of a multifunctional UHPC manhole cover device based on a multilayer structure design according to an embodiment of the utility model;

[0030] exist Figures 1 to 9 In the figure, the corresponding relationship between the names of the components and the numbers of the drawings is as follows:

[0031] 1--well seat, 11--clamping groove, 12--limiting protrusion, 2--well cover, 21--frame, 22--reinforcement ribs, 221--top rib mesh, 2211--top horizontal ribs, 2212--top vertical ribs, 222--middle rib mesh, 2221--middle horizontal ribs, 2222--middle vertical ribs, 223--bottom rib mesh, 23--filling layer, 231--cylindrical protrusion. DETAILED DESCRIPTION

[0032] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0033] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] It should be noted that UHPC is ultra-high performance concrete, which belongs to the existing technology and thus will not be described in detail.

[0036] Please refer to Figures 1 to 9 The utility model provides a multifunctional UHPC manhole cover device based on a multilayer structure design, comprising a manhole seat 1 and a manhole cover 2;

[0037] The well seat 1 is provided with a clamping groove 11, and the well cover 2 is arranged in the clamping groove 11;

[0038] The manhole cover 2 includes a frame 21, a reinforcing rib 22 and a filling layer 23;

[0039] The frame is preferably a metal frame;

[0040] The reinforcing rib 22 is disposed in the metal frame 21, the filling layer 23 is disposed between the metal frame 21 and the reinforcing rib 22, and a plurality of cylindrical protrusions 231 are evenly distributed on the top of the filling layer 23;

[0041] The reinforcing ribs 22 include a top-layer rib mesh 221 and a middle-layer rib mesh 222, both of which are arranged at the center of the metal frame 21, and the area of ​​the top-layer rib mesh 221 is smaller than that of the middle-layer rib mesh 222; the top-layer rib mesh 221 includes a plurality of top-layer horizontal ribs 2211 and a plurality of top-layer vertical ribs 2212, and the top-layer horizontal ribs 2211 and the top-layer vertical ribs 2212 are arranged perpendicular to each other; the middle-layer rib mesh 222 includes a plurality of middle-layer horizontal ribs 2221 and a plurality of middle-layer vertical ribs 2222, and the middle-layer horizontal ribs 2221 and the middle-layer vertical ribs 2222 are arranged perpendicular to each other;

[0042] The filling layer 23 is made of UHPC material, and the well seat 1 is made of UHPC material.

[0043] When the bearing capacity level of traditional manhole cover devices is not enough, they are mainly achieved by increasing the thickness or adding ribs, which is bulky and unsightly. Compared with traditional manhole cover devices, the manhole cover device of this embodiment uses UHPC material. UHPC is ultra-high performance concrete, which is mainly manifested in ultra-high strength, ultra-high toughness, ultra-high durability, good overall performance and stability. The life cycle of products made of UHPC is greatly improved. The performance of the substrate made of UHPC material is higher, which can reach 140-160 MPa. UHPC uses optimized graded fine bone, high-grade cement, ultra-fine high-activity mineral admixtures, micro-bead ultra-fine powder and special organic chemical additives to produce a multi-filling effect in the UHPC structural system, forming a dense structure, reducing microscopic defects, and greatly optimizing the internal microporous structure, thereby achieving ultra-high mechanical properties, durability and construction performance. In addition, steel fiber or a variety of engineering fibers are added to improve the brittleness of the substrate and improve toughness.

[0044] UHPC materials naturally have the advantages of anti-corrosion, anti-theft, noise reduction, and non-aging. Due to the excellent performance of UHPC, it has good bearing capacity and a large safety margin factor. The destructive load of the D400 manhole cover 2 can reach 60 tons.

[0045] This embodiment establishes a stress model of the manhole cover 2 through finite element analysis, and designs and distributes the UHPC reinforcement ribs 22 according to the stress conditions. For areas with high stress, the content of reinforcement ribs 22 is high, and for areas with low stress, the content of reinforcement ribs 22 is low; in addition, the transverse and longitudinal distribution of the reinforcement ribs 22 is on the same plane, for example, the top horizontal ribs 2211 are distributed on the same plane, and each type of rib is distributed on the same plane, so that the transverse and longitudinal ribs have the same protective layer thickness, achieving higher tensile strength. In addition, the ultra-high strength of the UHPC material itself improves the overall bearing capacity of the manhole cover device, and can save the amount of reinforcement ribs 22 and save product costs.

[0046] Furthermore, color paste material may be added to the UHPC mix, and the dispersibility of the color paste in the concrete may be further improved to produce manhole covers 2 of various colors, thereby facilitating the classification and management of the manhole covers 2 .

[0047] Preferably, the top horizontal rib 2211 has the same diameter and length as the top vertical rib 2212, the middle horizontal rib 2221 has the same diameter and length as the middle vertical rib 2222, and the diameter and length of the top horizontal rib 2211 are smaller than those of the middle horizontal rib 2221; the top vertical rib 2212, the top horizontal rib 2211, the middle horizontal rib 2221 and the middle vertical rib 2222 are arranged in the metal frame 21 in sequence from top to bottom.

[0048] Preferably, the reinforcing ribs 22 further include a bottom rib mesh 223, and the bottom rib mesh 223 includes a plurality of bottom horizontal ribs and a plurality of bottom vertical ribs, and the bottom horizontal ribs and the bottom vertical ribs are arranged perpendicular to each other.

[0049] Preferably, the reinforcing ribs 22 are steel fibers or engineering fibers.

[0050] Preferably, the surface of the reinforcing rib 22 is roughened to make it rough. In this embodiment, the reinforcing rib 22 is processed and the surface of the reinforcing rib 22 is roughened to make it have better gripping properties, thereby improving the tensile performance.

[0051] Preferably, the outer surfaces of the manhole cover 2 and the manhole seat 1 are respectively provided with outer covering layers, and the outer covering layers are made of UHPC material. In this embodiment, the manhole cover 2 and the manhole seat 1 are fully covered with UHPC ultra-high performance concrete, which effectively improves the anti-corrosion and anti-rust performance.

[0052] Preferably, the periphery of the well seat 1 is provided with a plurality of limiting protrusions 12, which are distributed in a circumferential array structure around the periphery of the clamping groove 11. By adding limiting protrusions 12 around the periphery of the well seat 1, not only can the material of the entire well seat 1 be reduced, but also the installation can be made more stable.

[0053] Preferably, a waterproof and anti-seepage coating is provided on the surface of the manhole cover 2 and the manhole seat 1, and the material of the waterproof and anti-seepage coating is methyl methacrylate, and the thickness is 200nm. Through the above structural design, after the substrate is completed, a 200nm methyl methacrylate coating is brushed on the substrate, so that the waterproof and anti-seepage properties of the substrate are improved.

[0054] Preferably, a functional coating layer is provided on the surface of the manhole cover 2; the functional coating layer is an inorganic pigment coating, a fluorescent phase change material coating or a reflective material coating. In this embodiment, the functional coating layer can be set as needed, such as adding inorganic pigments to make an inorganic coating layer, and different inorganic pigments can be added as needed to make products of different colors, such as red, green, black, or customized colors according to color cards, so that the color of the manhole cover 2 is diverse, which is convenient for distinguishing manhole covers 2 for different purposes and facilitating classification management.

[0055] By adding fluorescent phase change materials, the material absorbs light during the day and converts it into energy, and converts it into light energy at night, thus reminding passers-by and traffic participants of the existence of the manhole cover 2. It can effectively improve the recognition rate and auxiliary functions at night or in special environments, thus empowering the manhole cover 2.

[0056] In addition, reflective materials can be added to block direct sunlight and reduce the temperature of the manhole cover 2, which is especially suitable for environments that require cooling, such as chemical raw material covers.

[0057] Preferably, a methyl methacrylate coating layer with a thickness of 200-300 nm is sprayed on the outside of the functional coating layer. By spraying the methyl methacrylate coating layer on the outside of the functional coating layer, the anti-permeability performance of the substrate can be improved, and the functional coating layer can be well protected.

[0058] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adopts UHPC materials to make manhole covers and manhole seats, so that the manhole covers and manhole seats have the advantages of anti-corrosion, anti-theft, noise reduction, and not easy to age, and have good load-bearing capacity and a large safety margin coefficient. By optimizing the distribution structure of the internal reinforcement ribs of the manhole cover, the top layer and bottom layer of reinforcement mesh are set in the areas with greater force in the manhole cover, and the areas with less force are covered with the middle layer of reinforcement mesh, which effectively improves the overall load-bearing capacity and saves the amount of reinforcement ribs to reduce product costs. In addition, by setting different coatings, the functionality of the manhole cover is increased and the use effect of the manhole cover is improved. Compared with traditional manhole covers, the manhole cover device of the present invention can improve the overall load-bearing capacity, has high strength and long service life, and can effectively reduce the cost of the manhole cover.

[0059] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A multifunctional UHPC manhole cover device based on a multilayer structure design, characterized in that: It comprises a well base (1) and a well cover (2); The well seat is provided with a clamping groove (11), and the well cover is arranged in the clamping groove; The manhole cover comprises a frame (21), reinforcing ribs (22) and a filling layer (23); The reinforcing rib is arranged in the frame, the filling layer is arranged between the frame and the reinforcing rib, and a plurality of cylindrical protrusions (231) are evenly distributed on the top of the filling layer; The reinforcing ribs include a top rib mesh (221) and a middle rib mesh (222), the top rib mesh and the middle rib mesh are both arranged at the center of the frame, and the area of ​​the top rib mesh is smaller than the area of ​​the middle rib mesh; the top rib mesh includes a plurality of top horizontal ribs (2211) and a plurality of top vertical ribs (2212), the top horizontal ribs and the top vertical ribs are arranged perpendicular to each other; the middle rib mesh includes a plurality of middle horizontal ribs (2221) and a plurality of middle vertical ribs (2222), the middle horizontal ribs and the middle vertical ribs are arranged perpendicular to each other; The filling layer is a UHPC filling layer, and the well seat is a UHPC well seat.

2. The multifunctional UHPC manhole cover device based on multilayer structure design according to claim 1 is characterized in that: The top layer horizontal ribs have the same diameter and length as the top layer vertical ribs, the middle layer horizontal ribs have the same diameter and length as the middle layer vertical ribs, and the diameter and length of the top layer horizontal ribs are smaller than those of the middle layer horizontal ribs; the top layer vertical ribs, the top layer horizontal ribs, the middle layer horizontal ribs and the middle layer vertical ribs are arranged in the frame in sequence from top to bottom.

3. The multifunctional UHPC manhole cover device based on multilayer structure design according to claim 2 is characterized in that: The reinforcing ribs also include a bottom rib mesh (223), the bottom rib mesh including a plurality of bottom horizontal ribs and a plurality of bottom vertical ribs, the bottom horizontal ribs and the bottom vertical ribs being arranged perpendicular to each other.

4. The multifunctional UHPC manhole cover device based on multilayer structure design according to claim 3 is characterized in that: The reinforcing ribs are steel fiber reinforcing ribs or engineering fiber reinforcing ribs.

5. The multifunctional UHPC manhole cover device based on multilayer structure design according to claim 4 is characterized in that: The surface of the reinforcing rib is roughened to make it rough.

6. The multifunctional UHPC manhole cover device based on multilayer structure design according to claim 1 is characterized in that: The outer surfaces of the manhole cover and the manhole seat are respectively provided with outer claddings, and the outer claddings are UHPC outer claddings.

7. The multifunctional UHPC manhole cover device based on multilayer structure design according to claim 6 is characterized in that: A plurality of limiting protrusions (12) are provided on the periphery of the well seat, and the plurality of limiting protrusions (12) are distributed on the periphery of the clamping groove in a circumferential array structure.

8. The multifunctional UHPC manhole cover device based on multilayer structure design according to claim 1 is characterized in that: The surfaces of the manhole cover and the manhole seat are provided with a waterproof and anti-seepage coating, the material of the waterproof and anti-seepage coating is methyl methacrylate, and the thickness thereof is 200nm.

9. The multifunctional UHPC manhole cover device based on multilayer structure design according to any one of claims 1 to 8, characterized in that: The surface of the manhole cover is provided with a functional coating layer; the functional coating layer is an inorganic pigment coating, a fluorescent phase change material coating or a reflective material coating; a methyl methacrylate coating layer with a thickness of 200-300nm is sprayed on the outside of the functional coating layer.

10. The multifunctional UHPC manhole cover device based on multilayer structure design according to any one of claims 1 to 8, characterized in that: The frame is a metal frame.

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