Assembly pile foundation bearing platform type bank protection structure

Abstract

The utility model provides an assembly pile foundation bearing platform type bank protection structure which comprises a base, and a containing cavity is formed in the base. The bank protection structure is located in the containing cavity and formed by stacking a plurality of hollow structures, the bank protection structure comprises a plurality of bank protection layers, and the bank protection layers form a plurality of step-shaped structures facing the two sides from top to bottom; each hollow structure forms a closed cavity, the opening of the closed cavity with the opening faces upwards, and each hollow structure is provided with a T-shaped reinforcing piece or a reinforcing plate forming a bearing surface along the interior of the closed cavity; and from top to bottom, the bank protection structure is a symmetrical structure which is gradually widened and takes the center line of the accommodating cavity as a symmetry axis. According to the utility model, a symmetrical structure and a step-shaped structure are formed, a better stabilizing effect is achieved, and the base forms a bearing platform, so that the whole structure is attractive and easy to assemble and install.

Description

Technical Field

[0001] The utility model relates to the technical field of pedestal revetment structures, in particular to an assembled pile foundation pedestal type revetment structure. Background Art

[0002] Using assembled structures to form revetment structures has become a more convenient construction method. However, in the prior art, most of the hollow bodies are formed into a structure with horizontal openings, and then the openings are set downwards, so as to carry out the planting of green plants in the later stage. For example, in the patent with announcement number CN217839899U, an assembled ecological revetment structure with fish nests is formed, so as to form a more ecological and environmentally friendly structure. However, the core is that the prefabricated fish nest layer 200 can provide a shelter for fish and a living place for benthic animals in the water, which promotes the development of biological diversity and improves the shortcomings of pure prefabricated hollow block combined structures. However, the opening is downwards, which makes it easy for the concrete injected into the hollow structure or other injected aggregates constituting the revetment layer to flow out, making it difficult to ensure good support. Utility Model Content

[0003] The utility model aims to provide an assembled pile foundation pedestal type revetment structure, which utilizes a closed cavity and is stacked with the opening facing upward, so that gravels such as polyurethane can better form a cushion layer and are easy to maintain.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions.

[0005] Assembled pile foundation platform type bank protection structure, including:

[0006] A base, wherein the base forms a receiving cavity;

[0007] A revetment structure located in the accommodating cavity and formed by stacking a plurality of hollow structures, wherein the revetment structure comprises a plurality of revetment layers, and from top to bottom, the revetment layers form a plurality of stepped structures toward both sides;

[0008] Each of the hollow structures forms a closed cavity, the closed cavity with an opening is arranged upward, and each of the hollow structures is provided with a T-shaped reinforcement member or reinforcement plate forming a bearing surface along the closed cavity;

[0009] From top to bottom, the bank protection structure is a symmetrical structure with a width gradually widening and a center line of the accommodating cavity as a symmetry axis.

[0010] Preferably, the base comprises a prefabricated bottom plate, both ends of the prefabricated bottom plate extend to form enclosure plates, and a accommodating cavity with openings at both ends formed between the two enclosure plates, and at least two groups of reserved holes are symmetrically arranged in the accommodating cavity.

[0011] Preferably, it further comprises a plurality of precast piles forming the support surface, and the reserved holes are arranged in one-to-one correspondence with the precast piles.

[0012] Preferably, a plurality of reserved steel bars penetrate through the precast pile, a grid-like limiting hole is formed in the reserved hole by a plurality of pile top steel bars, and the reserved steel bars extend out of at least the limiting holes near the periphery of the reserved hole.

[0013] Preferably, along the thickness direction, part of the prefabricated bottom plate forms a blocking opening of the reserved hole, and the reserved steel bar passes through the blocking opening and enters the limiting hole.

[0014] Preferably, at least one of the front and rear sides and / or the left and right sides of each hollow structure forms a protrusion, and the other side opposite thereto forms a groove, and adjacent hollow structures are connected to each other through the concave-convex tenon-groove.

[0015] Preferably, the cross-section of the protrusion or the groove is an expanding structure with a gradually increasing width, and a triangular structure is formed inside the protrusion toward the middle position of the hollow structure.

[0016] Preferably, the hollow structure is recessed or protruded along one side of the protrusion or groove to form a recessed groove or a protruding portion, and the protrusion or groove is located in the middle of the recessed groove or the protruding portion.

[0017] Preferably, between adjacent revetment layers from top to bottom, part of the hollow structure in the lower revetment layer is exposed at the side of the upper revetment layer.

[0018] The beneficial effects of the utility model are as follows:

[0019] In the utility model, a better bank protection structure is formed by stacking the hollow structures with the openings facing upwards, and at the same time the hollow structures form a closed cavity, which is convenient for the construction, paving and maintenance of the gravel layer, thereby improving efficiency.

[0020] In the utility model, prefabricated piles are added, so that the bottom plate can not only be well supported, but also can be further connected and fixed with the pre-buried reserved steel bars, etc., to ensure the firmness of the entire support. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of the assembled pile foundation pedestal type revetment structure provided by the utility model;

[0022] Figure 2 An assembly diagram of the base and the bottom revetment layer provided by the utility model;

[0023] Figure 3 A top view of the reserved hole provided by the utility model;

[0024] Figure 4A schematic diagram of the structure of the bottom revetment layer provided by the utility model;

[0025] Figure 5 A schematic diagram of the structure of the middle revetment layer provided by the utility model;

[0026] Figure 6 A schematic diagram of the structure of the top revetment layer provided by the utility model;

[0027] Figure 7 A schematic diagram of the structure of the prefabricated base plate provided by the utility model;

[0028] In the figure:

[0029] 100, base; 110, prefabricated bottom plate; 120, enclosure plate; 130, reserved hole; 140, pile top steel bar; 150, limit hole; 200, hollow structure; 210, T-shaped reinforcement; 220, reinforcement plate; 230, protrusion; 240, groove; 250, sunken groove; 300, revetment layer; 310, bottom revetment layer; 320, middle revetment layer; 330, top revetment layer; 400, prefabricated piles; 410, reserved steel bar. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0031] See attached Figure 1-7 As shown, the assembled pile foundation cap-type revetment structure in this embodiment, in order to support the entire revetment structure, further includes a base 100 forming a receiving cavity, and then in the receiving cavity, a revetment structure is formed by stacking a plurality of hollow structures 200, the revetment structure includes a plurality of layers of revetment layers 300, from top to bottom, the revetment layers 300 form a plurality of stepped structures facing both sides; each of the hollow structures 200 forms a closed cavity, the closed cavity with an opening is arranged with the opening facing upward, and each of the hollow structures is provided with a T-shaped reinforcement 210 or a reinforcement plate 220 forming a bearing surface along the closed cavity; from top to bottom, the revetment structure is a symmetrical structure with a gradually widening width and a center line of the receiving cavity as a symmetry axis. In actual construction, the topmost revetment layer is provided with reinforcement plates, and other layers are provided with T-shaped reinforcements. The purpose is that when gravel cushion layers are provided for other layers in the later stage, a height limit structure can be formed through the T-shaped reinforcements. The top revetment layer 300 is generally paved without height limit requirements at this time, while the bottom layer needs to reserve space to prevent the upper layer from falling, etc., and the T-shaped reinforcements are used to limit the position.

[0032] See attached Figure 1-3 As shown, the base 100 in this embodiment includes a prefabricated bottom plate 110, and the two ends of the prefabricated bottom plate 110 extend to form a baffle plate 120. The accommodating cavity with openings at both ends is formed between the two baffle plates 120, and at least two groups of reserved holes 130 are symmetrically arranged in the accommodating cavity. In this embodiment, the purpose of adding the reserved holes 130 is for subsequent support and fastening of steel bars.

[0033] Specifically, a corresponding number, such as 2, 3, 4, or more precast piles 400 forming a support surface can be set according to the length and width, and the reserved holes 130 are set one by one corresponding to the precast piles 400. At this time, the precast piles have a support surface, which not only increases the base height, but also has a large support area and is stable.

[0034] During specific assembly, firstly, a plurality of reserved steel bars 410 are passed through the prefabricated pile 400, and a grid-like limiting hole 150 is formed in the reserved hole 130 by a plurality of pile top steel bars 140, and the reserved steel bars 410 extend out of at least the limiting holes 150 near the periphery of the reserved hole 130.

[0035] In this embodiment, the reserved hole 130 is not a through hole, and its height is only a part of the height of the prefabricated bottom plate 110. Then, along the thickness direction, part of the prefabricated bottom plate 110 forms a blocking port of the reserved hole. The reserved steel bar 410 passes through the blocking port and enters the limiting hole 130, and is limited by the limiting hole 130. Specifically, in this embodiment, the reserved steel bar 410 can be longer, for example, extending into the topmost hollow structure 200, or it can just extend into the prefabricated bottom plate. The purpose is to make the overall integrated structure more solid.

[0036] During assembly, in order to improve assembly efficiency, in this embodiment, at least one of the front and rear sides and / or the left and right sides of each hollow structure 200 forms a protrusion 230, and the other side opposite thereto forms a groove 240, and the adjacent hollow structures are connected to each other through the concave-convex tenon-groove. Furthermore, in the horizontal direction, whether in the X-axis direction or the Y-axis direction, the adjacent hollow structures are connected by the concave-convex tenon-groove, which is convenient for assembly and disassembly, and specifically, the depth of the entire protrusion or groove is consistent with the height of the hollow structure, so that the plug-in length is large, the contact surface is large, and it is firm.

[0037] In order to increase the contact surface, the cross-section of the protrusion 230 or the groove 240 is an expanding structure with a gradually increasing width, and a triangular structure toward the middle of the hollow structure is formed inside the protrusion 230. The triangular structure becomes narrower toward the outside during the laying of the gravel layer, which is helpful for assembling the gravel layer, and when subjected to force, it can be diffused inward, achieving multiple goals at one stroke.

[0038] In the vertical Y-axis direction, in order to realize the assembly of adjacent hollow structures, the hollow structure is concave or protruded along one side of the protrusion or groove to form a concave groove or a protrusion, and the protrusion or groove is located in the middle of the concave groove or the protrusion. In this embodiment, the upper and lower surfaces of the hollow structure are respectively provided with a concave groove 250 or a protrusion (not shown in the figure), and the two are arranged correspondingly, so as to facilitate the assembly of the lower layer. Of course, in order to complete the thorough circumferential assembly, the concave groove 250 or the protrusion is arranged on the same side as the groove 230 or the protrusion 240 in this embodiment. For example, in the hollow structure of the tetrahedron, a protrusion and a groove are arranged on the wide side at the same time, but a longer concave groove is arranged along the wide length direction, so that the protrusion or the groove is in the middle of the length of the concave groove. In this embodiment, the concave groove 250 can be not arranged in the hollow structure of the top layer, and no assembly is required at this time.

[0039] In this embodiment, in order to make more possible settings later and to make the gravel layer more beautiful, part of the hollow structure 200 in the lower revetment layer 300 is exposed on the side of the upper revetment layer between adjacent revetment layers 300 from top to bottom.

[0040] In the utility model, a certain confidential project is taken as an example for introduction. In this project, the process of bank protection construction is: cofferdam → foundation pit excavation → square pile sinking → cushion layer pouring, pile head treatment, ash cake production → bottom plate installation → reserved hole reinforcement binding and pouring → bottom layer hollow block installation → bottom layer geotextile laying and backfill soil → porous polyurethane construction → middle layer hollow block installation → backfill soil and geotextile laying → porous polyurethane construction → top layer hollow block installation → backfill soil in hollow block → geotextile laying behind wall → backfill soil.

[0041] See attached Figure 1-6 , then for the revetment in the above embodiment, its revetment structure includes 3 layers, namely, a bottom revetment layer, a middle revetment layer and a top revetment layer, and the specific construction process is as follows;

[0042] 1. Pouring of cushion layer, pile head treatment and ash cake production

[0043] After the square piles are sunk, the trench is manually leveled to an elevation of 0.9m. If there is water in the trench, it should be drained in time. The cushion layer is cast with C15 concrete to an elevation of 0.98m, and the cushion layer casting surface must be flat.

[0044] According to the design requirements, the pile head of the concrete square pile is broken 45CM to expose the main reinforcement of the pile and extend into the structure. In order to prevent the pile top from splitting after the pile head is chiseled off, before the pile head is chiseled off, a cutting machine is used to cut a slit with a depth of ≥2cm along the designed pile top elevation. The depth of the slit must not damage the steel cage, and then the pile head above the slit is chiseled off with a pick head machine. When the pile head is chiseled off, first use a pneumatic pick to break from all sides of the pile. When approaching the pile top elevation, the chiseling speed should be slowed down, and the pile top should be gently chiseled until it is roughly flat. After the pile head is chiseled off, the broken concrete after chiseling is cleaned up.

[0045] To ensure the flatness of the cushion layer, a 2cm thick ash cake is required at the four corners of each base plate. The ash cake is mixed with dry mortar and leveled to a height of 1m using a level and laser during construction.

[0046] Prefabricated baseboard installation

[0047] After the strength of the cushion layer and the ash cake meets the requirements for hoisting, start hoisting the prefabricated bottom plate 110 constituting the base 100. Before installing the prefabricated bottom plate 110, first measure and lay out the lines, use the ink fountain to mark the inner and outer control lines on the poured cushion layer, make standard sections according to the prefabricated blocks or pile positions, and simultaneously check whether the position of the bottom plate to be assembled and hoisted meets the pile position plane position of the reserved hole 130 in the prefabricated bottom plate 110, to ensure that the position of the bottom plate and the reserved hole is basically consistent with the plane position of the cushion layer on site, and meet the requirements of installation accuracy. Before hoisting the bottom plate, dry mortar must be mixed to fill the cushion layer, and the height must be slightly higher than the ash cake.

[0048] After being transported to the site, it is assembled and hoisted by four-point lifting on water or land. During the assembly and hoisting, the pile foundation must be assembled into the reserved holes in the base plate.

[0049] After the prefabricated retaining wall is successfully hoisted and placed, the hooks are cut off and anti-corrosion treatment is performed.

[0050] , Reinforcement binding and pouring of reserved openings

[0051] The assembly process of the prefabricated bottom plate 110 of the revetment in this embodiment is as follows: in the prefabricated bottom plate 110, the reserved steel bars 410 in the prefabricated piles 400 and the pile top steel bars 140 are tied or welded into a steel mesh → expansive high-strength concrete is poured → concrete curing. That is, the steel bars after the pile head treatment are tied or welded with the steel bars in the reserved holes of the bottom plate to form a steel mesh, and then the wet connection method is used, and the reserved holes and the steel mesh are poured, vibrated and cured with high-strength concrete to ensure that the pile foundation and the prefabricated components form a whole and meet the design strength and bearing capacity requirements.

[0052] 4. Installation of bottom hollow blocks (i.e. bottom revetment layer 310)

[0053] The prefabricated hollow blocks (i.e., the hollow structure 200) are constructed by step-type assembly and hoisting, and the horizontal connection between the hollow blocks on the same layer and the vertical connection between the upper and lower layers of the hollow blocks are connected to each other by concave and convex mortise and tenon joints.

[0054] Before the bottom layer is assembled and installed, measurement and layout are first performed. The inner and outer side control lines of the bottom hollow blocks can be determined on the bottom plate base surface using a black ink fountain line. The flatness and longitudinal line shape of the bottom hollow blocks are strictly controlled during hoisting and installation. After installation, the bottom hollow blocks and the bottom plate are grouted with M25 concrete mortar. In this embodiment, the bottom revetment layer 310 can use a hollow structure 200 with a larger length and width.

[0055] When installing adjacent hollow blocks (i.e., hollow structure 200), place a rubber tire (inner tube) at the edge of the installed hollow block to protect the appearance quality of the hollow block.

[0056] 5. Laying of geotextile and backfilling of the bottom layer of hollow blocks

[0057] After the hollow structure 200 of the bottom layer is installed for a certain length, geotextiles are vertically installed along the inner side of the hollow structure 200 facing the river surface and the geotextiles in the middle and top hollow blocks are reserved, and then the free blocks are backfilled. The backfill soil materials for the bottom hollow blocks are silty clay, clayey silt, silty sand, etc., and the maximum particle size of the soil material shall not exceed 50mm; silty clay and cast garbage shall not be used for backfilling. The backfill soil is backfilled in layers of 20cm, and the backfill strength is ≥80%.

[0058] Porous polyurethane construction

[0059] According to the actual situation on site, porous polyurethane construction adopts prefabricated blocks for installation. Polyurethane blocks are installed by hoisting. Before installing polyurethane, the reserved geotextile needs to be spread out and laid flat. After laying flat, polyurethane blocks are installed along the inner wall of the hollow block facing the river, and the flatness is strictly controlled during installation.

[0060] Installation of middle and top hollow blocks (i.e. middle revetment layer 320 and top revetment layer 330)

[0061] Before installing the control blocks on the middle or top layers, it is necessary to lay out the lines on the base bed after the backfill and compaction of the lower hollow blocks. The base bed needs to be leveled. If it is not possible to draw lines, the plane control lines can be set by arranging positioning piles. Keep them 1.5m away from the vertical wall line where the hollow blocks are installed to prevent the hollow blocks from colliding with them and causing displacement during installation, which would affect the installation accuracy.

[0062] When installing adjacent hollow blocks, place rubber tires (inner tubes) on the edges of the installed hollow blocks to protect the appearance quality of the hollow blocks.

[0063] In this embodiment, the middle revetment layer 320 is similar to the bottom revetment layer 310, but is reduced to a certain extent as a whole, such as 90% of the hollow structure 200, and the protrusions 230, grooves 240, sunken grooves 250 and T-shaped reinforcements 210 thereon just correspond to the protrusions 230, grooves 240, sunken grooves 250 and T-shaped reinforcements 210 in the bottom revetment layer 310 located therebelow. As for the top revetment layer 330, it is also similar to the middle revetment layer 320, reduced to a certain extent, and the protrusions 230, grooves 240 and sunken grooves 250 of the two correspond to each other, but at this time, the reinforcement plate 220 in the top revetment layer 330 is arranged correspondingly to the T-shaped reinforcement 210.

[0064] Laying of middle and top geotextiles and backfilling

[0065] After the middle / top hollow blocks are installed to a certain length, geotextiles are vertically installed along the inner side of the hollow blocks facing the river, and then the hollow blocks are backfilled. The backfill soil for the middle and top hollow blocks is cultivated soil or organic soil. The backfill soil is backfilled in layers of 20 cm, and the backfill strength is ≥80%.

[0066] Geotextile laying behind the wall

[0067] The geotextile behind the wall is laid with 450g / m staple needle-punched nonwoven geotextile, which is laid behind the wall at the joints of prefabricated components, with a length of ≥1.0m along the vertical joint direction. The overlap length shall not be less than 0.5m.

[0068] Backfill behind the wall

[0069] After the geotextile is laid, the backfill behind the wall is compacted in layers. The layer thickness is 20cm, and the compaction equipment is a small tamping machine or a tamping equipment modified from an excavator.

[0070] The revetment in this embodiment is backfilled in layers by compaction to an elevation of 4.4m-5m, and a platform with a width of about 0.9m is leveled at this elevation. After the platform is leveled, a slope is built along the direction behind the wall.

[0071] Multiple strong geomats, bagged gravel and grass bricks are laid.

[0072] In this embodiment, after the bank backfill and slope repair are completed, a multi-strength geotextile mat is laid along the slope. The width of the geotextile mat is determined according to the design section, and the laying length is determined according to the laying capacity during construction. The overlap length is not less than 0.5m, and it is locked with a special connection fastening lock to connect into a whole piece of geotextile mat.

[0073] When laying high-strength geotextile mats, they should be laid flat and not folded. There should be some relaxation in the cross-section direction of the revetment, and the tension should not be too tight. The geotextile mat should be laid perpendicular to the axis of the revetment.

[0074] After the geotextile mat is laid, bagged gravel (mixed with soil) is laid in a stepped manner along the slope.

[0075] The grass blocks are laid on top of the bagged gravel in a stepped manner. They are laid as evenly as possible and straddle the seams.

[0076] In this embodiment, while utilizing the grooves for assembly, the opening of the hollow structure faces upward, providing a foundation for subsequent plant planting.

[0077] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

[0078] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0079] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Assembled pile foundation platform type bank protection structure, characterized in that: include, A base, wherein the base forms a receiving cavity; A revetment structure located in the accommodating cavity and formed by stacking a plurality of hollow structures, wherein the revetment structure comprises a plurality of revetment layers, and from top to bottom, the revetment layers form a plurality of stepped structures toward both sides; Each of the hollow structures forms a closed cavity, the closed cavity with an opening is arranged upward, and each of the hollow structures is provided with a T-shaped reinforcement member or reinforcement plate forming a bearing surface along the closed cavity; From top to bottom, the bank protection structure is a symmetrical structure with a width gradually widening and a center line of the accommodating cavity as a symmetry axis.

2. The assembled pile foundation cap-type revetment structure according to claim 1 is characterized in that: The base comprises a prefabricated bottom plate, both ends of which extend to form enclosure plates, and a accommodating cavity with openings at both ends formed between the two enclosure plates, wherein at least two groups of reserved holes are symmetrically arranged in the accommodating cavity.

3. The assembled pile foundation cap type bank protection structure according to claim 2 is characterized in that: It also includes a plurality of prefabricated piles forming a supporting surface, and the reserved holes are arranged in one-to-one correspondence with the prefabricated piles.

4. The assembled pile foundation cap type bank protection structure according to claim 3 is characterized in that: A plurality of reserved steel bars penetrate through the prefabricated pile, and a grid-shaped limiting hole is formed in the reserved hole by a plurality of pile top steel bars, and the reserved steel bars extend out of at least the limiting holes near the periphery of the reserved hole.

5. The assembled pile foundation cap type bank protection structure according to claim 4 is characterized in that: Along the thickness direction, part of the prefabricated bottom plate forms a blocking opening of the reserved hole, and the reserved steel bar passes through the blocking opening and enters the limiting hole.

6. The assembled pile foundation cap type bank protection structure according to claim 1, characterized in that: At least one of the front and rear sides and / or the left and right sides of each hollow structure forms a protrusion, and the other side opposite thereto forms a groove, and adjacent hollow structures are connected to each other through the concave-convex tenon-groove.

7. The assembled pile foundation cap-type bank protection structure according to claim 6 is characterized in that: The cross-section of the protrusion or the groove is an expanding structure with a gradually increasing width, and a triangular structure is formed inside the protrusion toward the middle position of the hollow structure.

8. The assembled pile foundation cap type bank protection structure according to claim 7 is characterized in that: The hollow structure is concave or protrudes along one side of the protrusion or groove to form a concave groove or a protruding portion, and the protrusion or groove is located in the middle of the concave groove or the protruding portion.

9. The assembled pile foundation cap-type bank protection structure according to claim 1, characterized in that: From top to bottom, between adjacent revetment layers, part of the hollow structure in the lower revetment layer is exposed on the side of the upper revetment layer.

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