A combined revetment combined with short-term and long-term planning

Abstract

The present invention discloses a combined revetment combined with short-term and long-term planning, including a primary revetment and a prefabricated secondary L-shaped revetment, the prefabricated secondary L-shaped revetment is composed of a plurality of concrete prefabricated revetment sections, the two ends of the concrete prefabricated revetment sections are respectively provided with matching connecting convex teeth and connecting concave teeth, the adjacent two prefabricated secondary L-shaped revetments are connected by connecting convex teeth and connecting concave teeth, the connecting convex teeth and connecting concave teeth are connected by bolts, a rubber water stop groove is provided between the connecting convex teeth and the connecting concave teeth, a water-expanding rubber strip is provided in the groove, a low-foaming polyethylene plate is filled at the connection between the connecting convex teeth and the connecting concave teeth, and a single-component polyurethane sealant is used to seal the outer surface of the deformation joint. The combined revetment of the present invention can be implemented according to the blue line of the planned river channel or when the landscape is improved in hydrophilicity, the secondary revetment can be disassembled and reused, reducing abandoned projects, reducing construction difficulty, and reducing the impact of construction on the surrounding environment.

Description

Technical Field

[0001] The invention relates to a combined revetment that takes short-term and long-term planning into consideration. Background Art

[0002] At present, in addition to its own flood control and safety guarantee function, the functions of revetment such as ecological landscape and water-friendly needs are also increasingly valued. In order to meet the landscape and water-friendly needs along the river, the current form of secondary revetment is often adopted: the top elevation of the first revetment wall is lowered to improve the water-friendly experience; the secondary revetment is arranged behind the first revetment wall in combination with the landscape function, and the top elevation of the secondary revetment wall meets the defense requirements. However, due to various objective reasons, the revetment construction process and landscape construction projects, and the adjustment of the planned river blue line are often not implemented simultaneously. For the needs of flood control and safety, the revetment project is usually implemented first, and the revetment mostly adopts a wall-to-top type. After the subsequent landscape planning plan is determined and the conditions for the implementation of the river planning blue line are met, the built revetment will be cut off and removed, and a new secondary revetment will be built. The above implementation method is time-consuming and material-consuming, and does not conform to the "sustainable development" policy proposed by the country. Therefore, this patent designs a combined revetment combined with short-term and long-term planning to avoid the above problems. Summary of the invention

[0003] The present invention provides a combined revetment, which solves the problem that the implementation of landscape projects along the river lags behind the levee standard reconstruction project and the long-term planned blue line is inconsistent with the current river shoreline, and land cannot be expropriated in the near future for implementation according to the planned blue line. It takes into account both short-term and long-term project planning to achieve simple, rapid and low-impact construction of flood control walls in the near future. When it can be implemented in accordance with the planned river blue line and the landscape can be improved in hydrophilicity requirements in the later stage, the secondary retaining wall can be dismantled and reused, reducing abandoned projects, reducing construction difficulty, and reducing the impact of construction on the surrounding environment.

[0004] The present invention solves the above technical problems through the following technical solutions: a combined revetment combined with short-term and long-term planning, comprising a primary revetment and a prefabricated secondary L-shaped revetment, characterized in that the primary revetment adopts a cast-in-place reinforced concrete high-pile pedestal structure, a bottom plate and a pile foundation are arranged at the bottom of the primary revetment, the prefabricated secondary L-shaped revetment is bonded to the top of the primary revetment by mortar, and the prefabricated secondary L-shaped revetment is assembled by a plurality of concrete prefabricated revetment sections, matching connecting convex teeth and connecting concave teeth are arranged at both ends of the concrete prefabricated revetment sections, two adjacent concrete prefabricated revetment sections are connected by connecting convex teeth and connecting concave teeth, bolt holes are arranged on the connecting convex teeth and the connecting concave teeth along the wall thickness direction, the connecting convex teeth and the connecting concave teeth are connected by bolts, a reserved rubber water stop groove is arranged between the connecting convex teeth and the connecting concave teeth, a water-expanding rubber strip is placed in the groove, a low-foaming polyethylene plate is filled at the connection between the connecting convex teeth and the connecting concave teeth, and a single-component polyurethane sealant is used to seal the periphery of the deformation joint.

[0005] Furthermore, C20 concrete blocks are set on the upper surface of the first-level revetment bottom plate to assist in positioning the second-level revetment during hoisting.

[0006] Furthermore, a cement mortar cushion layer is laid on the primary revetment, and a prefabricated secondary L-shaped revetment is arranged on the mortar cushion layer. The elevation of the secondary revetment is made flush by adjusting the thickness of the cushion layer, and the cushion layer material becomes dense under the action of gravity and moisture of the secondary revetment and has a certain waterproof property.

[0007] Furthermore, the prefabricated concrete revetment section includes a base plate and a vertical wall, the upper portion of one end of the base plate extends outward to form a base plate extension portion, the inner side of the corresponding end of the vertical wall extends outward to form a vertical wall extension portion, the base plate extension portion and the vertical wall extension portion jointly form a connecting convex tooth, and an outwardly protruding positive angle is arranged in the middle of the base plate extension portion to improve the accuracy during lifting and splicing; the upper portion of the other end of the base plate of the base plate extension portion and the vertical wall extension portion is recessed inward to form a base plate recessed portion, the inner side of the other end corresponding to the vertical wall is recessed inward to form a vertical wall recessed portion, the base plate recessed portion and the vertical wall recessed portion jointly form a connecting concave tooth, and an inwardly recessed negative angle is arranged in the middle of the base plate recessed portion, and corresponding bolt holes are reserved in the vertical wall extension portion and the vertical wall recessed portion.

[0008] Furthermore, the reserved bolt holes are steel casings embedded in the prefabricated concrete revetment section.

[0009] Furthermore, a rubber water stop groove is provided in the recessed portion of the bottom plate, and a water-swellable rubber strip is placed in the groove.

[0010] The present invention discloses a combined revetment, which includes a cast-in-place primary revetment and a prefabricated secondary L-shaped revetment, wherein the prefabricated secondary L-shaped revetment is located above the primary revetment. A C20 concrete block is arranged on the upper surface of the primary revetment bottom plate to assist the positioning of the secondary revetment during hoisting; the secondary L-shaped revetment is prefabricated as a whole, with a standard length of 2.7 / 5.2 / 7.7m, and the revetments are connected by staggered concave and convex teeth (with yin-yang angles in the concave and convex teeth). The concave and convex teeth with yin-yang angles are riveted together during splicing, which is conducive to construction positioning. Slots are reserved in the revetment wall, and the prefabricated L-shaped revetments are connected by steel bolts. Water-expanding rubber strips are arranged between the concave and convex teeth to meet the waterproof requirements.

[0011] Preferably, the secondary revetment is connected by transverse and longitudinal screws to facilitate installation and disassembly.

[0012] Preferably, the primary revetment and the secondary revetment adopt a combined structure. When the landscape is improved in the long term, hydrophilicity is emphasized, or when the conditions for implementation according to the planned river blue line are met, the secondary revetment can be disassembled and divided into blocks for use, which greatly shortens the construction time and reduces the amount of abandoned projects.

[0013] The positive and progressive effects of the present invention are:

[0014] 1. The combined revetment of the present invention solves the problem that the implementation of the landscape project along the river lags behind the embankment standard transformation project, the long-term planning blue line is inconsistent with the current river bank line, and it is impossible to expropriate land for implementation according to the planned blue line in the near future. It occupies a small area and is easy to transport and hoist, which can effectively solve the problem of narrow construction site. In the later implementation of the long-term plan, the secondary revetment can be reused, reducing abandoned projects, which is in line with the development concept of innovation, coordination and green.

[0015] 2. The secondary assembled revetment of the present invention is a prefabricated component, which reduces the problems of long construction period and slow construction speed of cast-in-place reinforced concrete structure, and is greatly affected by seasons and climate, thereby shortening the construction period.

[0016] 3. The invention is quick and convenient to construct, has little impact on the surrounding environment, has low noise, and has little dust problem, which is beneficial to environmental protection.

[0017] 4. The bank protection structure of the present invention is overall stable and can achieve flood prevention tasks. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a full cross-sectional view of the combined bank protection of the present invention.

[0019] Figure 2 This is an elevation view of the standard section secondary assembled revetment of the present invention.

[0020] Figure 3 This is a detailed drawing of the prefabricated assembled bank protection and water stopping of the present invention.

[0021] Figure 4 This is a connection diagram of the prefabricated assembled revetment of the present invention. DETAILED DESCRIPTION

[0022] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0023] like Figure 1 As shown, a combined revetment includes a primary revetment 1 and a prefabricated secondary L-shaped revetment 2. The prefabricated secondary L-shaped revetment 2 is bonded to the top of the primary revetment 1 through a mortar layer 8, and the primary revetment bottom plate is located on a C15 plain concrete cushion layer 4. Pile foundations 5 and 6 are located below the primary revetment 1, and C20 concrete blocks 7 are arranged on the upper surface of the primary revetment bottom plate to assist in positioning the secondary revetment during hoisting.

[0024] like Figure 2As shown, the prefabricated secondary L-shaped revetment 2 is composed of several prefabricated concrete revetment sections, which include reserved hole bolts 7 to connect the convex teeth 10 and the concave teeth 12. The standard section prefabricated revetments 2 are positioned and riveted through the reserved bolt holes 9 and connected with bolts. A positive angle 13 is set in the middle of the convex teeth 10 (bottom plate part), and a negative angle 14 is set in the middle of the concave teeth 12 (bottom plate part). A rubber water stop groove 15 is set between the concave and convex teeth, and a water-expanding rubber strip 11 is placed in the groove. The secondary assembled revetment 2 is composed of several sections of prefabricated concrete revetment sections along the shoreline direction. The length of a single section is 2.5 / 2.7 / 5.2 / 7.7m, the length in the vertical shoreline direction is 1.5m, and the height is 1.8m. The concrete prefabricated revetment section includes a bottom plate and a vertical wall. The thickness of the vertical wall is 0.3m, and the thickness of the bottom plate is 0.4m. A landscape railing 3 is designed on the top of the secondary revetment wall to protect the safety of pedestrians in the rear riverside space and improve the viewing experience. A shaping template is set on the outer surface of the secondary revetment facing the river to improve its ornamental value.

[0025] Preferably, the reserved bolt hole is a pre-buried steel casing. Bolt holes need to be reserved when prefabricating the concrete prefabricated revetment section. The position of the reserved bolt hole can be effectively controlled, but it is difficult to control the diameter of the prefabricated hole, and direct prefabrication may be difficult to meet the design requirements. To ensure the hole diameter, when actually prefabricating concrete, a steel casing corresponding to the hole diameter is buried and then poured with concrete.

[0026] like Figure 3 As shown, two sections of concrete prefabricated revetment sections are connected by overlapping the concave and convex teeth, which can effectively improve the revetment connection effect. A rubber water stop groove 15 is provided at the concave and convex teeth, and a water-expanding rubber strip 11 is placed in the groove. The connection joint is filled with a low-foam polyethylene board 17, and the surface is sealed with a single-component polyurethane sealant 16 to form a triple waterproof.

[0027] like Figure 4 As shown, two sections of prefabricated concrete revetment segments are connected by overlapping between concave and convex teeth and connected by bolts, wherein 18 is a YGM pad (round head), 19 is a YGM18 nut (round head), and 20 is a bolt.

[0028] Furthermore, a deformation joint is provided every 15m along the shore section where the first-level revetment is located, and the width of the deformation joint is 20mm. Foam polyethylene caulking plates are provided between the deformation joints, rubber water-stop grooves are provided at the concave tooth positions, water-swelling rubber strips are placed in the grooves, and the periphery of the deformation joints is sealed with a single-component polyurethane sealant.

[0029] When the land use conditions are limited, the landscape plan behind the wall is uncertain, the existing shoreline cannot be transformed according to the planned river blue line, and the revetment cannot be implemented in one go, when considering the transition between the near and long term, it is necessary to consider the use of the combined revetment of the present invention. In practical applications, according to the actual site conditions, the appropriate pile foundation type and structure size are determined, and finally the design structure is safety reviewed to ensure the safety of the structure.

[0030] The revetment of the present invention has the following advantages:

[0031] 1. The combined revetment of the present invention can achieve the standard transformation requirements of the revetment in the near future. When the long-term ecological landscape improvement plan along the river is determined or the conditions for implementation according to the blue line of the river planning are met, it is only necessary to hoist the original prefabricated assembled secondary revetment as a whole to the hinterland behind the wall to achieve the reuse of the secondary revetment and reduce abandoned projects.

[0032] 2. The secondary assembled revetment of the present invention is a prefabricated component, which reduces the problems of long construction period and slow construction speed of cast-in-place reinforced concrete structure, and is greatly affected by seasons and climate, thereby shortening the construction period.

[0033] 3. The invention is quick and convenient to construct, has little impact on the surrounding environment, has low noise, and has little dust problem, which is beneficial to environmental protection.

[0034] 4. The bank protection structure of the present invention is overall stable and can achieve flood prevention and water retention tasks.

[0035] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "lateral", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A combined revetment combined with short-term and long-term planning, including a primary revetment and a prefabricated secondary L-shaped revetment, characterized in that The first-level revetment adopts a cast-in-place reinforced concrete high-pile cap structure. The bottom of the first-level revetment is provided with a bottom plate and a pile foundation. The prefabricated second-level L-shaped revetment is bonded to the top of the first-level revetment by mortar. The prefabricated second-level L-shaped revetment is composed of several prefabricated concrete revetment sections. The two ends of the prefabricated concrete revetment sections are respectively provided with matching connecting convex teeth and connecting concave teeth. The adjacent two prefabricated concrete revetment sections are connected by connecting convex teeth and connecting concave teeth. Bolt holes are provided on the connecting convex teeth and connecting concave teeth along the wall thickness direction. The connecting convex teeth and connecting concave teeth are connected by bolts. A rubber water stop groove is arranged between the connecting convex teeth and the connecting concave teeth, a water-expanding rubber strip is placed in the groove, a low-foaming polyethylene board is filled at the connection between the connecting convex teeth and the connecting concave teeth, and a single-component polyurethane sealant is used to seal the outer surface of the deformation joint; the concrete prefabricated revetment section includes a bottom plate and a vertical wall, the upper part of one end of the bottom plate extends outward to form a bottom plate extension part, and the inner side of one end corresponding to the vertical wall extends outward to form a vertical wall extension part, the bottom plate extension part and the vertical wall extension part jointly form a connecting convex tooth, and an outwardly protruding positive angle is arranged in the middle of the bottom plate extension part to improve the hoisting and splicing. The other end of the bottom plate is recessed inward to form a bottom plate recessed portion, and the inner side of the other end corresponding to the vertical wall is recessed inward to form a vertical wall recessed portion. The bottom plate recessed portion and the vertical wall recessed portion jointly form a connecting concave tooth, and an inwardly recessed inner angle is arranged in the middle of the bottom plate recessed portion, and corresponding bolt holes are reserved in the vertical wall extension portion and the vertical wall recessed portion. The first-level revetment is provided with a deformation joint along the shore section where it is located, a foam polyethylene caulking plate is arranged between the deformation joints, a rubber water stop groove is arranged on the concave tooth side, a water-expanding rubber strip is placed in the groove, and a single-component polyurethane sealant is used to seal the periphery of the deformation joint.

2. The combined revetment according to claim 1, characterized in that C20 concrete blocks are set on the upper surface of the first-level revetment base plate to assist in positioning the prefabricated second-level L-shaped revetment during hoisting.

3. The combined revetment according to claim 1, characterized in that: A rubber water stop groove is arranged in the recessed part of the bottom plate, and a water-expanding rubber strip is placed in the groove.

4. The combined revetment according to claim 1, characterized in that The vertical wall thickness of the prefabricated concrete revetment section is 0.3m, and the bottom plate thickness is 0.4m.

5. The combined revetment according to claim 1, characterized in that The length of a single section of the prefabricated concrete revetment section along the shoreline is 2.5m, 2.7m, 5.2m, or 7.7m, the length in the direction perpendicular to the shoreline is 1.5m, the height is 1.8m, and a railing is arranged above the prefabricated secondary L-shaped revetment.

6. The combined revetment according to claim 1, characterized in that: The reserved bolt holes are steel casings pre-buried in the prefabricated concrete revetment section.

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