Fabricated permanent and temporary combined stable side slope retaining structure

Abstract

The utility model discloses an assembly type permanent and temporary combined stable side slope supporting and retaining structure which comprises a plurality of first box bodies, a plurality of second box bodies and filler. The first box body and the second box body are each of a square hollow structure. The top of the first box body and the top of the second box body are provided with a plurality of feeding ports protruding upwards, and each feeding port is detachably connected with a sealing cover in a sealed mode. A plurality of discharging openings are formed in the bottoms of the first box body and the second box body in a downward protruding manner, and each discharging opening is detachably connected with a sealing cover in a sealing manner; each first box body and each second box body are filled with the filler; the plurality of first box bodies are stacked up and down in a staggered manner to form a retaining assembly body; the second box body is matched and connected to an empty area after the first box bodies are staggered and stacked; the first box body is further provided with a drainage hole penetrating from the front side face to the rear side face. The utility model has the characteristics of quick construction, simplicity, convenience, economy, reasonability, obvious protection effect, permanent and temporary combination and the like.

Description

Technical Field

[0001] The utility model relates to the field of rock and soil retaining structure engineering, and in particular to an assembled permanent and temporary combined stable slope retaining structure. Background Art

[0002] In foundation pit or slope engineering, dangerous situations such as landslides often occur. Continuous heavy rainfall or earthquakes can also cause the slope to become unstable and slide. The traditional emergency rescue method is mainly backfill and counterpressure at the foot of the slope, and its construction method is mainly mechanical earth backfill and counterpressure or sandbag manual counterpressure. Among the above-mentioned traditional emergency rescue methods, mechanical earth backfill has the advantages of fast construction speed and low cost, but it also has the disadvantages of huge earthwork volume and large occupied area; and the construction method of sandbag manual counterpressure has the advantages of relatively small earthwork volume and small occupied area, but its construction efficiency is far lower than that of mechanical earth backfill and counterpressure. In order to achieve a better balance between the two support methods, the present application proposes an assembled permanent and temporary combined stable slope retaining structure. Summary of the invention

[0003] The utility model provides an assembled permanent and temporary combined stable slope retaining structure, which has the characteristics of fast construction, simple and convenient, economical and reasonable, significant protection effect, and permanent and temporary combination. It has broad application prospects in foundation pit slope rescue and permanent and temporary combined slope protection.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An assembled permanent and temporary combined stable slope retaining structure, comprising a plurality of first boxes, a plurality of second boxes and fillers; the first boxes and the second boxes are both square hollow structures; the tops of the first boxes and the second boxes are provided with a plurality of upwardly protruding feed ports, and each of the feed ports is detachably and sealedly connected with a sealing cover to form a convex plug-in portion; the bottoms of the first boxes and the second boxes are provided with a plurality of downwardly protruding discharge ports, and each of the discharge ports is detachably and sealedly connected with a sealing cover, and the peripheral edges of the bottoms of the first boxes and the second boxes are convexly provided with a convex plug-in portion; A frame is formed, and a concave plug-in part is formed in the area between the frame and the plurality of discharge ports; the filler is poured into each of the first boxes and each of the second boxes; the plurality of the first boxes are stacked up and down to form the support assembly, and the concave plug-in part of each of the first boxes in the upper layer is matched and docked with the convex plug-in parts on the top of two adjacent first boxes in the lower layer to form a staggered stacking state; the second boxes are matched and connected to the area vacated after the first boxes are staggered and stacked; the first boxes are also provided with a drainage hole that runs through the front side to the rear side.

[0006] Further, the number of the feed ports at the top of each of the first boxes is set to eight, which are distributed in a double-row matrix, and the number of the discharge ports at the bottom of each of the first boxes is set to three, which are distributed in a single row at equal intervals.

[0007] Further, four feed ports distributed in a matrix are provided at the top of each of the second boxes, and the spacing between the feed ports of the second boxes is the same as that between the feed ports of the first boxes; a discharge port is provided at the center of the bottom of the second box, the length of the second box is half of the length of the first box, and the width and height of the second box are the same as those of the first box.

[0008] Further, both the feed port and the discharge port are of circular structure, and the feed port or the discharge port is connected to the corresponding sealing cover by threads.

[0009] Further, the inner parts of the bottom plates of the first boxes and the second boxes are sloped from the periphery to the discharge port, and the slope ratios are both set to 4% - 5%.

[0010] Further, reinforcing ribs are provided on the front side, rear side and top surface of each of the first boxes.

[0011] Further, the drain holes are arranged obliquely, and the hole walls of the drain holes and the first boxes are integrally formed by using HDPE material.

[0012] Further, the prefabricated permanent and temporary combined stable slope retaining structure further includes an anchoring mechanism, the anchoring mechanism includes a plurality of screw-type recoverable anchor rods, a horizontally penetrating anchor hole is provided on the front side of each of the first boxes in the length direction to the rear side, the anchor hole is located above the drain hole, and the hole wall of the anchor hole and the first box are integrally formed.

[0013] Further, the filler includes one or a combination of concrete, pebbles, sand, soil, etc.

[0014] The beneficial effects of the utility model are:

[0015] 1) The utility model combines the upper, lower, left and right parts in a form similar to building blocks through the first box body and the second box body, assembles them by staggered stacking, and fixes them through the lap joint of the convex plugging part and the concave plugging part during stacking to form a retaining assembly with better integrity. Then, engineering materials are filled in the first box body and the second box body to make the retaining structure obtain greater gravity, thereby improving the self-stability and anti-slip ability of the retaining assembly. The area between the retaining assembly and the slope is the filling area. After each layer of the retaining assembly is assembled, the filling area is filled and compacted to stabilize the slope and prevent secondary landslides caused by slope instability. The accumulated water in the filling area and the slope can be drained through the drain holes to avoid damage to the soil layer caused by accumulated water deposition. When used as a temporary emergency retaining structure, pebbles or sand can be selected as the filler. When recycling, the retaining assembly can be removed layer by layer from top to bottom, and the pebbles in the blocks can be poured out; when used as a permanent retaining structure, cement slurry can be selected as the filler to solidify and harden the entire retaining assembly and enhance its durability; the utility model has the characteristics of fast construction, simple and convenient operation, economic rationality, remarkable protection effect, and combination of permanent and temporary use, and has broad application prospects in the emergency rescue of foundation pit slopes and the protection of slopes combining permanent and temporary use.

[0016] 2) Multiple feeding ports are designed at the top of the first box body or the second box body, and the filling material can be poured in one by one and multiple times during filling to ensure that the filling material in the box is uniform and full, so as to obtain greater gravity support.

[0017] 3) The inner bottom plates of the first box body and the second box body are sloped from the periphery to the discharge port, and the slope ratios are both set to 4%-5%. The slope is used to make the filling material gather towards the discharge port. Just opening the sealing cover of the discharge port can let the filling material flow out. When used as a temporary retaining structure, it is beneficial for recycling.

[0018] 4) The first box body is reserved with bolt holes. When the slope stability is poor or the retaining assembly is relatively high, spiral recoverable bolts can be added. The spiral recoverable bolts penetrate from the front side of the first box body along the bolt holes into the deep part of the slope until the original soil layer of the slope, which can further increase the anti-slip force and anti-overturning ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further elaborates on the specific implementation manners of the present utility model in conjunction with the attached drawings, where:

[0020] Figure 1 is a schematic structural diagram of the construction state of the present utility model without installing spiral recoverable bolts;

[0021] Figure 2 is a schematic structural diagram of the construction state of the present utility model when spiral recoverable bolts need to be installed;

[0022] Figure 3Schematic structural diagram of an assembly example of the first box body and the second box body of the present utility model;

[0023] Figure 4 Front view of the first box body in the present utility model;

[0024] Figure 5 Top view of the first box body in the present utility model;

[0025] Figure 6 Bottom view of the first box body in the present utility model;

[0026] Figure 7 Schematic sectional view of the lower half of the first box body in the present utility model;

[0027] Figure 8 Front view of the second box body in the present utility model;

[0028] Figure 9 Top view of the second box body in the present utility model;

[0029] Figure 10 Bottom view of the second box body in the present utility model;

[0030] Figure 11 Schematic sectional view of the lower half of the second box body in the present utility model;

[0031] Figure 12 Schematic structural diagram when the upper first box body and the two lower first box bodies of the present utility model are stacked in a staggered manner;

[0032] Figure 13 Schematic structural diagram of the docking of the convex plugging part and the concave plugging part when the upper and lower box bodies of the present utility model are stacked in a staggered manner;

[0033] Reference signs in the drawings:

[0034] 1 - First box body, 2 - Second box body, 3 - Filling material, 4 - Feeding port, 5 - Sealing cover, 6 - Discharging port, 7 - Frame, 8 - Drainage hole, 9 - Screw - type recoverable anchor rod, 10 - Anchor rod hole, 11 - Reinforcing rib, 12 - Backfill area. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0036] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. When a part is referred to as "disposed in the middle", it is not only disposed at the exact middle position, but as long as it is not disposed at the two ends, it belongs to the range defined by the middle. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are only for the purpose of illustration.

[0037] Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as those commonly understood by those skilled in the technical field to which this utility model belongs. The terms used in the specification of this utility model in this article are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more of the related listed items.

[0038] Refer to Figures 1 to 13As shown in the figure, a prefabricated permanent and temporary combined stable slope retaining structure includes a plurality of first boxes 1, a plurality of second boxes 2 and a filler 3; both the first box 1 and the second box 2 are square hollow structures; a plurality of upwardly protruding feed ports 4 are provided at the tops of the first box 1 and the second box 2, and a sealing cover 5 is detachably and sealingly connected to each feed port 4 to form a convex plug-in part; a plurality of discharge ports 6 protrude downward from the bottoms of the first box 1 and the second box 2, and a sealing cover 5 is detachably and sealingly connected to each discharge port 6. A border 7 is protruded from the peripheral edge of the bottom of the first box 1 and the second box 2, and the area between the border 7 and the plurality of discharge ports 6 forms a concave plug-in part; the filler 3 is poured into each first box 1 and each second box 2; the plurality of first boxes 1 are stacked up and down to form the retaining assembly. The concave plug-in part of each first box 1 on the upper layer is matched and butted with the convex plug-in parts at the tops of two adjacent first boxes 1 on the lower layer to form an interleaved stacking state; the second box 2 is matched and connected to the area vacated after the first boxes 1 are interleaved and stacked; the first box 1 is also provided with a drain hole 8 penetrating from the front side to the rear side. The utility model combines the first box 1 and the second box 2 in a form similar to building blocks for up-and-down, left-and-right lapping and combination, assembles them by interleaved stacking, and fixes them by lapping the convex plug-in part and the concave plug-in part during stacking to form a retaining assembly with better integrity. Then, engineering materials are filled in the first box and the second box to make the retaining structure obtain greater gravity, thereby improving the self-stability and anti-sliding ability of the retaining assembly. The filling area 12 is between the retaining assembly and the slope. After each layer of the retaining assembly is assembled, the filling area 12 is filled and compacted to stabilize the slope and prevent secondary landslides caused by slope instability. The accumulated water in the filling area and the slope can be drained through the drain hole to avoid damage to the soil layer caused by accumulated water deposition. When used as a temporary emergency retaining structure, the filler can be selected as pebbles or sand. When recycling, the retaining assembly can be disassembled layer by layer from top to bottom, and the pebbles in the blocks can be poured out; when used as a permanent retaining structure, the filler can be selected as cement slurry, so that the entire retaining assembly is consolidated and hardened to enhance its durability; the utility model has the characteristics of fast construction, simple and convenient operation, economic rationality, remarkable protection effect, and permanent and temporary combination, and has broad application prospects in the emergency rescue of foundation pit slopes and the permanent and temporary combined slope protection.

[0039] In this embodiment, the outer dimensions of the first box 1 are length × width × height = 1.2m × 0.6m × 1.0m, and the outer dimensions of the second box 2 are length × width × height = 0.6m × 0.6m × 1.0m. The length of the second box 2 is half of the length of the first box 1, and the width and height of the second box 2 are the same as the width and height of the first box 1. After the first boxes 1 are interleaved and stacked, the second box 2 just fills the missing area, making the retaining assembly form a wall similar to a cuboid.

[0040] Please refer to Figures 4 to 7 As shown, the number of feeding ports 4 at the top of each first box body 1 is set to eight, which are distributed in a double-row matrix, and the number of discharging ports 6 at the bottom of each first box body 1 is set to three, which are distributed in a single row at equal intervals. Please refer to Figures 8 to 11 As shown, four feeding ports 4 distributed in a matrix are provided at the top of each second box body 2, and the intervals between the feeding ports 4 of the second box body 2 are the same as those between the feeding ports 4 of the first box body 1; a discharging port 6 is provided at the center of the bottom of the second box body 2. Both the feeding port 4 and the discharging port 6 are of circular structure, and the feeding port 4 or the discharging port 6 is connected to the corresponding sealing cover 5 by threads. Please refer to Figure 12 and 13 As shown, when the convex plugging part and the corresponding concave plugging part are docked, each discharging port 6 of the upper-layer first box body 1 and its sealing cover 5 exactly fall between every four adjacent feeding ports 4 of the lower-layer first box body 1 and their sealing covers 5, and the outer sides of the eight feeding ports 4 of the lower layer exactly fall inside the frame 7 of the corresponding upper-layer first box body 1, forming a matching clamping state. By using the layout of staggered stacking, the front-back, left-right movement of the upper and lower layers of box bodies can be restricted, making the structure of the entire retaining assembly more stable. Similarly, the second box body 2 is docked with the convex plugging part or the concave plugging part of the corresponding half of the first box body 1.

[0041] Please refer to Figure 3 、 Figure 12 and Figure 13 As shown, during laying, several first box bodies 1 can be horizontally laid in the first layer, and the first box body of the second layer is docked with the second box body 2. Align the second box body 2 with the side of the leftmost first box body 1 in the first layer and dock it, and clamp it at the left half position of the first box body 1. Then, the first box body 1 is horizontally laid next to the second box body 2. At this time, each first box body 1 in the upper layer is simultaneously matched and docked with the tops of two adjacent first box bodies 1 in the lower layer. The last missing area on the right side in the second layer is supplemented with another second box body 2. After that, every two layers are assembled and docked in the above method in turn to complete the installation of the entire retaining assembly. It should be noted that after each layer is laid, the first box body 1 or the second box body 2 needs to be filled with fillers in time and the sealing cover 5 should be covered. Designing multiple feeding ports 4 at the top of the first box body 1 or the second box body 2 is also to facilitate filling the fillers one by one and multiple times during filling, ensuring that the fillers in the box are uniform and full to obtain greater gravity support.

[0042] When used as a temporary retaining structure, the fillers 3 in each box body need to be discharged from the discharging port and the box bodies need to be recycled later. Therefore, the inner parts of the bottom plates of the first box body 1 and the second box body 2 are sloped from the periphery to the discharging port, and the slope ratios are both set to 4%-5%. Please refer to Figure 7 and Figure 11As shown, the slope is utilized to cause the filler 3 to converge towards the discharge port 6, and simply opening the sealing cover 5 of the discharge port 6 allows the filler to flow out.

[0043] As a preferred solution, reinforcing ribs 11 are provided on the front side, rear side, and top surface of each of the first boxes 1, which can enhance the structural strength of the first boxes. To avoid interference between the discharge port 6 of the upper box and the reinforcing ribs 11 of the lower box, the height of the frame 7 can be set slightly higher than the discharge port 6.

[0044] The drain holes 8 are arranged obliquely, with a slope ratio set to 5%, and the hole walls of the drain holes 8 and the first boxes 1 are integrally formed using HDPE material. The second boxes 2 are also made of HDPE material. To facilitate the transfer of each box during construction, lifting holes recessed into the boxes can be respectively opened at the top sides of the first boxes 1 and the second boxes 2, and the lifting holes are integrally formed with the boxes.

[0045] When the slope stability is poor or the retaining assembly is relatively high, an anchoring mechanism can be added. The anchoring mechanism includes a number of screw-type recoverable anchor rods 9. A horizontally penetrating anchor rod hole 10 is provided on the front side of each first box 1 in the length direction, extending through to the rear side. The anchor rod hole 10 is located above the drain hole 8, and the hole wall of the anchor rod hole 10 is integrally formed with the first box 1; the screw-type recoverable anchor rods 9 penetrate from the front side of the first box 1 along the anchor rod hole 10 into the deep slope until the original soil layer of the slope, which can further increase the anti-sliding force and anti-overturning ability. The specific structure of the screw-type recoverable anchor rod can refer to Chinese Patent CN202320481006.X. It should be noted that the use of the screw-type recoverable anchor rods 9 needs to be carried out after the assembly of the retaining assembly is completed and after the slope and the retaining assembly are filled with soil, to avoid the screw-type recoverable anchor rods 9 being bent during the soil compaction project.

[0046] The filler 3 includes one or more combinations of concrete, pebbles, sand, soil, etc. When used as a temporary retaining structure, pebbles can be poured into each feed port, and then sand or soil can be poured to fill the gaps between the pebbles; if it is to be used as a permanent retaining structure, after pouring the pebbles, cement slurry can be poured into each box through the feed port until each box is filled with cement slurry, and a permanent retaining structure is formed after the cement solidifies.

[0047] The construction method during the use of the present utility model includes the following steps:

[0048] (1) Excavate a foundation trench at the toe of the slope, level the base, and the buried depth of the base should not be less than 0.5m and should be leveled.

[0049] (2) Install the first layer of boxes. The first layer of boxes is all laid with the first boxes 1, and the boxes should be closely placed against each other. Before installation, the bottom discharge port lid should be tightened first;

[0050] (3) Pour pebbles into the box through each feed port 4 at the top of the first box body 1. To reduce the situation that the inside of the box is not fully filled due to the conical shape formed by the natural angle of internal friction of the pebbles, the pebbles should be poured into the box one by one and multiple times from each feed port 4. When the pouring is close to the top of the box body, manual operation can be used to push the pebbles around to ensure that the box body is filled densely as much as possible. When necessary, sand or soil may also need to be poured to fill the gaps between the pebbles. If it is to be used as a permanent retaining structure, after pouring the pebbles, cement slurry can be poured into the box through the feed port until the box is filled with cement slurry.

[0051] (4) Install the second layer and above box bodies in sequence, and complete the installation of each layer of box bodies and pebble filling according to the above steps (2) and (3) until the installation of the designed retaining structure is completed. Attention should be paid to ensuring the lap fit between each layer of box bodies. The first box bodies 1 between adjacent layers should be installed in a staggered and overlapping manner, and the missing areas should be filled by the second box bodies 2.

[0052] (5) After installing each layer of box body, backfill the soil area 12 between the retaining assembly and the slope behind, and set up filter bags at the drainage holes. The method of making the filter bags is the same as that of the filter bags for the drainage holes in general slope support. The filter bags are filled with medium and coarse sand materials.

[0053] (6) After the corresponding soil area 12 is backfilled, if it is necessary to set up anchor bolts, the screw - type recoverable anchor bolts 9 can be installed at the anchoring position according to the engineering needs. Pass the screw - type recoverable anchor bolts 9 through the selected anchor holes 10 and penetrate into the undisturbed soil layer deep in the slope. If it is not necessary to set up anchor bolts, this step can be skipped.

[0054] (7) When used as a temporary retaining structure, after the retaining structure is taken out of use, in accordance with the construction sequence, remove the anchor bolts (if there are no anchor bolts, this removal step is not required), excavate the soil of this layer, lift the whole box body by the lifting ring, hoist it to the unloading and recycling site, then unscrew the sealing cover 5 of the bottom discharge port 6 to pour out all the pebbles, and complete the recycling of the box body and the pebbles. If the retaining structure is used as a permanent retaining structure, this step is not applicable.

[0055] Applying this new type to the slope emergency repair project, compared with the traditional slope emergency repair project, the construction speed is faster, a better balance is achieved between the earthwork volume and the cost, it can be applied to the slope emergency repair project with limited space or restricted site conditions, and it has significant engineering value, good economy, ease of use and applicability.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered within the scope of the technical solutions of the present invention.

Claims

1. A prefabricated permanent and temporary combined stable slope retaining structure, characterized in that: The invention comprises a plurality of first boxes, a plurality of second boxes and fillers; the first boxes and the second boxes are both square hollow structures; the tops of the first boxes and the second boxes are provided with a plurality of upwardly protruding feed ports, and each of the feed ports is detachably and sealedly connected with a sealing cover to form a convex plug-in portion; the bottoms of the first boxes and the second boxes are provided with a plurality of downwardly protruding discharge ports, and each of the discharge ports is detachably and sealedly connected with a sealing cover, the peripheral edges of the bottoms of the first boxes and the second boxes are convexly provided to form a frame, and the area between the frame and the plurality of discharge ports forms a concave plug-in portion; the fillers are poured into each of the first boxes and each of the second boxes; the plurality of the first boxes are stacked up and down to form a retaining assembly, and the concave plug-in portion of each of the first boxes in the upper layer is matched and docked with the convex plug-in portion of the top of two adjacent first boxes in the lower layer to form a staggered stacking state; the second boxes are matched and connected to the area vacated after the first boxes are staggered and stacked; the first box is also provided with a drainage hole that runs through from the front side to the rear side.

2. The assembled permanent and temporary combined stable slope retaining structure according to claim 1 is characterized in that: The number of the feed openings on the top of each of the first boxes is set to eight, which are distributed in a double-row matrix, and the number of the discharge openings on the bottom of each of the first boxes is set to three, which are distributed in a single row with equal spacing.

3. The assembled permanent and temporary combined stable slope retaining structure according to claim 2 is characterized in that: The top of each of the second box bodies is provided with four feed ports distributed in a matrix, and the spacing between the feed ports of the second box bodies is the same as the spacing between the feed ports of the first box body; a discharge port is provided at the bottom center of the second box body, the length of the second box body is half the length of the first box body, and the width and height of the second box body are the same as those of the first box body.

4. The assembled permanent and temporary combined stable slope retaining structure according to claim 3 is characterized in that: The feed inlet and the discharge port are both circular structures, and the feed inlet or the discharge port is connected to the corresponding sealing cover through a thread.

5. The assembled permanent and temporary combined stable slope retaining structure according to claim 4 is characterized in that: The interior of the bottom plates of the first box body and the second box body are both sloped from all sides toward the discharge port, and the slope ratio is set to 4%-5%.

6. The assembled permanent and temporary combined stable slope retaining structure according to claim 2 is characterized in that: The front side surface, the rear side surface and the top surface of each of the first boxes are provided with reinforcing ribs.

7. The assembled permanent and temporary combined stable slope retaining structure according to claim 2 is characterized in that: The drainage holes are arranged obliquely, and the hole walls of the drainage holes and the first box body are integrally formed with HDPE material.

8. The assembled permanent and temporary combined stable slope retaining structure according to claim 2 is characterized in that: The assembled permanent and temporary combined stable slope retaining structure also includes an anchoring mechanism, which includes a plurality of spiral recyclable anchor rods. Each front side surface in the length direction of the first box body is provided with an anchor rod hole that horizontally penetrates to the rear side surface. The anchor rod hole is located above the drainage hole, and the hole wall of the anchor rod hole is integrally formed with the first box body.

9. The assembled permanent and temporary combined stable slope retaining structure according to claim 1 is characterized in that: The filler is one of concrete, pebbles, sand and soil.

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