Flat reinforcement cage flexible blanket protection structure suitable for covering layer riverbed shore foot

Abstract

The utility model belongs to the technical field of river bank slope protection, and particularly relates to a flat reinforcement cage flexible blanket protection structure suitable for a covering layer riverbed bank foot, which comprises permeable geotextile paved on the covering layer riverbed bank foot surface and a flat reinforcement cage flexible blanket paved on the permeable geotextile, the flat reinforcement cage flexible blanket comprises a plurality of strip-shaped reinforcement cage assemblies arranged side by side, and every two adjacent strip-shaped reinforcement cage assemblies are hinged. The strip-shaped reinforcement cage assembly comprises a plurality of flat reinforcement cages which are hinged in sequence; and stones are filled in the flat reinforcement cage. The device not only can solve the problems of poor integrity and weak impact resistance caused by lack of mutual restriction of current protective materials, but also can solve the problems that the protective capability on the covering layer is poor, and water flow permeates through the protective materials to wash the covering layer.

Description

TECHNICAL FIELD

[0001] The utility model belongs to river bank slope protection technical field especially relates to a flat steel bar cage flexible blanket protection structure suitable for covering layer riverbed bank foot. BACKGROUND

[0002] In the covering layer riverbed, the water conservancy project is built, because the original river flood discharge route is changed, the covering layer of the bank slope foot on both sides of the river is often scoured and washed by the water flow to form a large scour and endanger the stability of the bank slope.

[0003] The commonly used protection measures are stone throwing protection, gabion stone cage and steel bar cage, and in the actual operation process, because there is a lack of restraint effect between the protection materials, in addition to the difficulty in stabilizing on the covering layer, the water flow can also wash the underlying covering layer through the protection materials, resulting in poor protection effect or even protection failure.

[0004] Therefore, a flat steel bar cage flexible blanket protection structure suitable for covering layer riverbed bank foot is needed to solve the problem. INVENTION CONTENTS

[0005] The utility model discloses a flat steel bar cage flexible blanket protection structure suitable for covering layer riverbed bank foot to solve the above problems.

[0006] To achieve the above object, the utility model provides the following scheme:

[0007] A flat steel bar cage flexible blanket protection structure suitable for covering layer riverbed bank foot, comprising: water permeable geotextile laid on the covering layer riverbed bank foot surface and flat steel bar cage flexible blanket laid on the water permeable geotextile;

[0008] The flat steel bar cage flexible blanket comprises a plurality of parallel arranged strip-shaped steel bar cage assemblies, and adjacent two strip-shaped steel bar cage assemblies are hinged;

[0009] The strip-shaped steel bar cage assembly comprises a plurality of sequentially hinged flat steel bar cages;The flat steel bar cages of adjacent two strip-shaped steel bar cage assemblies are one-to-one corresponding and hinged;

[0010] The flat steel bar cage is filled with stone.

[0011] Preferably, the flat steel bar cage flexible blanket is provided with multiple layers, and a plurality of flat steel bar cages of the flat steel bar cage flexible blanket located below are arranged in layers with a plurality of flat steel bar cages of the flat steel bar cage flexible blanket located above.

[0012] Preferably, the flat steel bar cage comprises rectangularly arranged main reinforcement and rectangularly arranged mesh reinforcement, and the main reinforcement and the mesh reinforcement are fixedly connected together through a plurality of connecting reinforcement;

[0013] The main rib, the grid rib and the connecting rib constitute a gabion box.

[0014] One long side of the main rib is hinged with one side of a gabion box cover.

[0015] Preferably, two adjacent flat steel reinforcement cages of the same strip steel reinforcement cage assembly are hinged together by a connecting piece, and the flat steel reinforcement cages of two adjacent strip steel reinforcement cage assemblies are hinged together by another connecting piece.

[0016] Preferably, the connecting piece is one of a linking steel wire and a fastener.

[0017] Preferably, the length-width ratio of the flat steel reinforcement cage is 1:1.

[0018] Preferably, the thickness-length ratio of the flat steel reinforcement cage is 1:4.

[0019] Compared with the prior art, the utility model has the following advantages and technical effects:

[0020] In use, the water-permeable geotextile is laid on the riverbed shore of the covering layer to prevent the fine particles of the covering layer from escaping, and then the flat steel reinforcement cage flexible blanket is arranged on the water-permeable geotextile, so that the problem of poor protection of the covering layer and the problem of the water flow washing away the covering layer through the protective material are solved.

[0021] (1) The single steel reinforcement cage is designed to have a certain flatness coefficient, and under the premise of constant total weight, the impact flow velocity of the single steel reinforcement cage is greatly improved.

[0022] (2) After the single steel reinforcement cage is laid on the covering layer in sequence, the adjacent steel reinforcement cages are linked horizontally and vertically by the connecting piece to form the flat steel reinforcement cage flexible blanket, and the flat steel reinforcement cage flexible blanket has the properties of good integrity, strong impact resistance, certain flexibility of the steel reinforcement cage frame as a whole, adaptability to terrain changes and the like, and the stability of the protective structure is improved, the protection effect of the riverbed shore of the covering layer is effectively improved, and the problems of poor integrity, weak impact resistance, poor protection of the covering layer and the like of the block stone protection, gabion, steel reinforcement cage and other protective materials in the prior art are solved.

[0023] (3) The water-permeable geotextile is pre-laid on the covering layer bed surface, and then the flat steel reinforcement cage flexible blanket is laid, so that the fine particles of the covering layer are prevented from escaping, and the problem of the water flow washing away the underlying covering layer through the protective material is solved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work:

[0025] Figure 1 This is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the flat steel cage structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a single-layer flat steel cage flexible blanket of the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of a multi-layer flat steel cage flexible blanket of the utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the connector of the utility model;

[0030] Among them, 1. Permeable geotextile; 2. Flat steel cage flexible blanket; 3. Flat steel cage; 5. Connectors. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0033] Reference Figures 1 to 5 The utility model discloses a flat steel cage flexible blanket protection structure suitable for the cover layer riverbed bank footing, comprising: a permeable geotextile 1 laid on the cover layer riverbed bank footing surface and a flat steel cage flexible blanket 2 laid on the permeable geotextile 1;

[0034] The flat steel cage flexible blanket 2 comprises a plurality of strip steel cage assemblies arranged in parallel, and two adjacent strip steel cage assemblies are hinged;

[0035] The strip steel cage assembly includes a plurality of flat steel cages 3 hinged in sequence; the flat steel cages 3 of two adjacent strip steel cage assemblies correspond to each other and are hinged;

[0036] The flat steel reinforcement cage 3 is filled with stone.

[0037] In use, the water permeable geotextile 1 is laid on the riverbed shore of the covering layer to prevent the fine particles of the covering layer from escaping, and then the flat steel reinforcement cage flexible blanket 2 is arranged on the water permeable geotextile 1, thereby solving the problem of poor protection of the covering layer in the prior art and the problem of the water flow washing away the covering layer through the protective material. The flat steel reinforcement cage 3 has a certain flatness, which can improve the impact resistance of a single steel reinforcement cage. A plurality of flat steel reinforcement cages 3 are hinged together to form the flat steel reinforcement cage flexible blanket 2, thereby solving the problem of poor integrity and weak impact resistance caused by the lack of mutual restraint between the protective materials in the prior art.

[0038] In a further optimized scheme, the flat steel reinforcement cage flexible blanket 2 is provided with multiple layers, and the plurality of flat steel reinforcement cages 3 of the flat steel reinforcement cage flexible blanket 2 located at the lower layer are arranged in a stacked manner with the plurality of flat steel reinforcement cages 3 of the flat steel reinforcement cage flexible blanket 2 located at the upper layer.

[0039] The strip-shaped steel reinforcement cage assembly is formed by transversely connecting a plurality of flat steel reinforcement cages 3, and the flat steel reinforcement cage flexible blanket 2 is formed by longitudinally arranging a plurality of strip-shaped steel reinforcement cage assemblies. The plurality of flat steel reinforcement cages 3 of the two adjacent strip-shaped steel reinforcement cage assemblies correspond to each other and are hinged together.

[0040] When the flat steel reinforcement cage flexible blanket 2 is provided with multiple layers, the plurality of flat steel reinforcement cages 3 of the flat steel reinforcement cage flexible blanket 2 located at the lower layer are arranged in a stacked manner with the plurality of flat steel reinforcement cages 3 of the flat steel reinforcement cage flexible blanket 2 located at the upper layer.

[0041] In a further optimized scheme, the flat steel reinforcement cage 3 includes a main reinforcement arranged in a rectangular shape and a mesh reinforcement arranged in a rectangular shape, and the main reinforcement and the mesh reinforcement are fixedly connected through a plurality of connecting reinforcements.

[0042] The main reinforcement, the mesh reinforcement, and the plurality of connecting reinforcements form a stone cage box.

[0043] One side of the stone cage box cover is hinged to one long side of the main reinforcement.

[0044] In a further optimized scheme, the two flat steel reinforcement cages 3 adjacent to each other in the same strip-shaped steel reinforcement cage assembly are hinged together through a connecting piece 5, and the flat steel reinforcement cages 3 of the two adjacent strip-shaped steel reinforcement cage assemblies are hinged together through another connecting piece 5.

[0045] In a further optimized scheme, the connecting piece 5 is one of a linking steel wire and a fastener.

[0046] According to the stability starting calculation formula of the hexahedral steel reinforcement cage:

[0047]

[0048] In the formula, V is the starting flow rate of the steel reinforcement cage, △ is the conversion diameter of the ball formed by the stone cushion, D is the conversion diameter of the ball formed by the steel reinforcement cage, and λ is the flatness coefficient. a, b, c are the length of the long axis (length), the middle axis (width), and the short axis (thickness) of the reinforcement cage, respectively; g is the acceleration of gravity; γ s is the specific gravity of the reinforcement cage, generally taken as 2.0 t / m 3 ; γ s is the specific gravity of water, generally taken as 1.0 t / m 3 .

[0049] According to the formula, it can be seen that, with other factors unchanged, the greater the flatness coefficient λ (greater than 1), the greater the starting flow velocity V of the reinforcement cage. Assuming that the volume of the hexahedral reinforcement cage is 8 m 3 , the diameter D of the sphere formed by the reinforcement cage is 1.24 m, and the diameter △ of the sphere formed by the riverbed (base stone) covering layer is 0.1 m. The starting flow velocity V of the reinforcement cage with the same volume and different flatness coefficients λ is calculated and shown in Table 1.

[0050] Table 1 Calculation table of starting flow velocity V of reinforcement cage with the same volume and different flatness coefficients λ (volume is 8 m 3 )

[0051]

[0052] As can be seen from Table 1, the starting flow velocity V of the reinforcement cage with the same volume increases as the flatness coefficient λ increases. When the flatness coefficient λ = 8.00, the starting flow velocity V of the reinforcement cage increases from 3.53 m / s when the flatness coefficient λ = 1 (regular hexahedron) to 7.05 m / s, and the anti-impact protection capability is multiplied.

[0053] Considering the actual operation of the 4m×4m×0.5m reinforcement cage, due to the thin height of 0.5m, the length and width of 4m result in too large flatness, which is not conducive to the structural stability during transportation. Therefore, the 4m×4m×0.5m reinforcement cage 3 is divided into 4 2m×2m×0.5m flat reinforcement cages 3, and the 4 2m×2m×0.5m flat reinforcement cages 3 are linked to form a flat reinforcement cage flexible blanket 2.

[0054] The starting flow velocity V of the flat reinforcement cage 3 with the same volume (2m 3 ) and different flatness coefficients λ is calculated and shown in Table 2.

[0055] Table 2 Calculation table of starting flow velocity V of reinforcement cage with the same volume and different flatness coefficients λ (volume is 2 m 3 )

[0056]

[0057] Further optimization scheme, the length-width ratio of the flat reinforcement cage 3 is 1:1.

[0058] Further optimization scheme, the thickness-length ratio of the flat reinforcement cage 3 is 1:4.

[0059] From the above table, in order to avoid the problem that the thickness and length of the tea set are too large, resulting in the flat steel reinforcement cage 3 being too large and not conducive to transportation, the thickness and length ratio of the flat steel reinforcement cage 3 is set to 1:4, and the length-width ratio of the flat steel reinforcement cage 3 is 1:1, which can meet the protection requirements and transportation requirements.

[0060] Further, the length and width of the flat steel reinforcement cage 3 are both 2m, and the thickness is 0.5m.

[0061] The use steps of the utility model are as follows:

[0062] Step one: laying the water permeable geotextile 1;

[0063] Before laying the flat steel reinforcement cage flexible blanket 2, a layer of water permeable geotextile 1 is first rolled on the covering layer bed surface to prevent water from washing the underlying covering layer through the protective material;

[0064] Step two: designing the flat steel reinforcement cage 3 to have a certain flatness;

[0065] According to the requirements of the steel reinforcement cage resistance to flow velocity, the flatness coefficient of the single flat steel reinforcement cage 3 and the lengths of the long axis, the middle axis and the short axis of the steel reinforcement cage are determined through formula calculation, thereby improving the resistance of the single flat steel reinforcement cage 3.

[0066] Step three: laying the flat steel reinforcement cage flexible blanket 2;

[0067] The single flat steel reinforcement cage 3 is sequentially laid on the water permeable geotextile 1 of the covering layer bed surface, and the flat steel reinforcement cage 3 is linked horizontally and vertically on the horizontal plane through the connecting piece 5, and the stone is filled in the steel reinforcement cage frame to form the flat steel reinforcement cage flexible blanket 2.

[0068] In the above technical solution, the steel diameter, the binding steel wire or the welded steel wire, and the steel spacing of the flat steel reinforcement cage 3 are determined after strength calculation according to the particle size of the filled stone and the weight after filling.

[0069] In the above technical solution, the flow impact force and the drag force are calculated in combination with the flow velocity and the flow direction, and the required tensile strength of the connecting piece 5 is calculated in combination with the friction force of the single flat steel reinforcement cage 3, and then the specification of the connecting piece 5 is determined according to the tensile strength of the connecting piece 5.

[0070] The selection of stone should be appropriate to local conditions, and the stone that is easy to obtain and has low cost in the local area is selected for filling.

[0071] In the description of the utility model, need understanding is, the term "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore can not be understood as limiting the utility model.

[0072] The above-described embodiments are only descriptions of the preferred modes of the utility model, and do not limit the scope of the utility model, and various modifications and improvements to the technical solutions of the utility model made by those skilled in the art without departing from the design spirit of the utility model should fall within the protection scope defined by the claims of the utility model.

Claims

1. A flat steel cage flexible blanket protection structure suitable for covering the riverbed bank footing, characterized in that: include: A permeable geotextile (1) laid on the riverbed footing of the covering layer and a flat steel cage flexible blanket (2) laid on the permeable geotextile (1); The flat steel cage flexible blanket (2) comprises a plurality of strip steel cage assemblies arranged in parallel, and two adjacent strip steel cage assemblies are hinged; The strip-shaped steel cage assembly comprises a plurality of flat steel cages (3) hinged in sequence; the flat steel cages (3) of two adjacent strip-shaped steel cage assemblies correspond to each other one by one and are hinged; The flat steel bar cage (3) is filled with stones.

2. The flat steel cage flexible blanket protection structure suitable for covering the riverbed bank footing according to claim 1 is characterized in that: The flat steel cage flexible blanket (2) is provided with multiple layers, and the plurality of flat steel cages (3) of the flat steel cage flexible blanket (2) located at the bottom and the plurality of flat steel cages (3) of the flat steel cage flexible blanket (2) located at the top are stacked.

3. The flat steel cage flexible blanket protection structure suitable for covering the riverbed bank footing according to claim 1 is characterized in that: The flat steel bar cage (3) comprises main bars arranged in a rectangular shape and grid bars arranged in a rectangular shape, wherein the main bars and the grid bars are fixedly connected together by a plurality of connecting bars; The main reinforcement, the grid reinforcement and a plurality of the connecting reinforcements constitute a gabion box; One of the long sides of the main reinforcement is hinged to one side of the gabion box cover.

4. The flat steel cage flexible blanket protection structure suitable for covering the riverbed bank footing according to claim 1 is characterized in that: Two adjacent flat steel cages (3) of the same strip steel cage assembly are hinged together via a connector (5), and two adjacent flat steel cages (3) of the strip steel cage assembly are hinged together via another connector (5).

5. The flat steel cage flexible blanket protection structure suitable for covering riverbed bank footing according to claim 4, characterized in that: The connecting piece (5) is one of a connecting steel wire and a fastener.

6. The flat steel cage flexible blanket protection structure suitable for covering riverbed bank footing according to claim 1, characterized in that: The length-to-width ratio of the flat steel cage (3) is 1:

1.

7. The flat steel cage flexible blanket protection structure suitable for covering riverbed bank footing according to claim 6, characterized in that: The ratio of thickness to length of the flat steel cage (3) is 1:4.

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