Ecological bank protection of pull-together integral hollow prefabricated block combination and construction method thereof

Abstract

The application relates to a pull-connection integral type hollow prefabricated block combined ecological revetment machine and a construction method thereof, which comprises the following steps: step one, constructing a toe; step two, constructing a steel pipe pile; step three, installing an anchoring structure; step four, pouring a foundation of the toe; step five, backfilling wall soil; step six, masonry of double-row prefabricated blocks; step seven, masonry of single-row prefabricated blocks; step eight, constructing a top pressing part; and step nine, planting vegetation. The application improves the overall stability of the prefabricated block revetment structure by combining the toe structure of the revetment and the anchoring structure and by pull-connection of the prefabricated blocks in the upper, lower, left and right directions.

Description

Technical Field

[0001] This application relates to the field of building engineering technology, specifically to a construction method for an integrated hollow precast block combination ecological revetment. Background Technology

[0002] Currently, conventional precast block revetments typically involve stacking blocks in staggered layers, with mortar used to connect and fix the blocks. After stacking three or more layers, soil is backfilled, and geogrids are laid, repeating this process upwards. While the mortar between the blocks provides stability, prolonged erosion from river flow and rainfall reduces its bonding strength, and the geogrids can also shift. This results in insufficient bonding or tension between the blocks, making them prone to slippage and damage, ultimately leading to the revetment structure losing its protective function.

[0003] Therefore, there is an urgent need for a precast block composite revetment with strong load-bearing capacity and tie-in performance, as well as its construction method, which can improve the service durability of the revetment. Summary of the Invention

[0004] The purpose of this application is to address the aforementioned problems in the existing technology by providing a combined ecological revetment with integrated hollow precast blocks and its construction method.

[0005] To achieve the aforementioned objectives, this application adopts the following technical solution: The construction method for the integrated hollow precast block combined ecological revetment includes the following construction steps:

[0006] Step 1: Apply foot protector to the front toes:

[0007] A row of anti-seepage walls is constructed at the water-facing end of the front toe of the revetment foundation, and the front toe of the pressure foot is constructed on top of the anti-seepage walls.

[0008] Step 2: Construct steel pipe piles:

[0009] Multiple rows of steel pipe piles were driven deep beneath the foundation of the revetment;

[0010] A cushion layer is constructed behind the anti-seepage wall and at the bottom of the foot foundation to be constructed.

[0011] Step 3: Install the anchoring structure:

[0012] Anchoring units are constructed at the top of the steel pipe piles and within the foot foundation to be constructed.

[0013] Step 4: Pour the foundation stone:

[0014] The footing foundation is poured on the cushion layer, and the anchoring unit and the top of the steel pipe pile are poured into the footing foundation.

[0015] Step 5: Backfill the back wall with soil.

[0016] Backfill the wall back soil behind the precast blocks, and the wall back soil is laid simultaneously with the masonry of the precast blocks;

[0017] Step Six: Laying out double-row precast blocks:

[0018] Precast blocks are laid on top of the foundation.

[0019] The lower part of the revetment is composed of two rows of precast blocks, and geogrids are installed between every two layers of precast blocks.

[0020] Step 7: Lay out a single row of precast blocks:

[0021] The upper layer is constructed using single-row precast blocks, and the connection method between the precast blocks is the same as that for double-row precast blocks.

[0022] Step 8: Construction of the capping structure:

[0023] Concrete capping is constructed on top of the precast blocks at the top.

[0024] Step Nine: Planting Vegetation

[0025] Crushed stone is backfilled into the cavity of the double-row precast blocks, and soil is backfilled into the cavity of the single-row precast blocks. Vegetation is then planted in the backfilled soil.

[0026] Furthermore, in step two, anchor bars are installed inside the steel pipe pile, with lower anchor bolts at the bottom and upper anchor bolts at the top.

[0027] The anchoring bars are tied to the bottom end of the steel pipe pile by using anchoring bolts;

[0028] Concrete is poured into the cavity of the steel pipe pile after it has been cast.

[0029] Furthermore, in step three, a lower annular steel plate is installed at the top of each steel pipe pile. The lower annular steel plate is connected to the upper annular steel plate through multiple columns, so that the lower annular steel plate, columns, and upper annular steel plate constitute an integral anchoring unit, and connecting plates are set between multiple transverse anchoring units.

[0030] Furthermore, in step three, the top of the anchor bar is fixed to the lower annular steel plate using the upper anchor bolt.

[0031] Furthermore, in step five, the backfill soil is separated into a lower backfill soil and an upper backfill soil by a gravel layer, and the gravel layer is located at the water level.

[0032] Furthermore, in step six, the connection method between the bottom precast block and the toe foundation is as follows:

[0033] The left side of the precast block has a reserved hole, and the bottom layer of tie rods are inserted into the reserved hole of the bottom precast block. The bottom end of the bottom layer of tie rods is fixed to the upper annular steel plate by a connecting bolt.

[0034] Furthermore, in step six, the connection method between the upper and lower precast blocks is as follows:

[0035] The upper and lower precast blocks are stacked in a staggered manner, and there is bonding mortar between the upper and lower precast blocks;

[0036] The left side of the precast block is provided with a reserved hole, and there are upper and lower tie bars in the reserved hole. The upper and lower tie bars are connected as one piece by a connecting sleeve.

[0037] The reserved holes are filled with backfill mortar, and a capping steel plate and capping mortar are constructed on top of the backfill mortar.

[0038] Furthermore, in step six, the connection method between the left and right columns of precast blocks is as follows:

[0039] The left and right precast blocks are connected at the precast block boundary line, and the adjacent joint of the two precast block bodies has a top groove, a vertical groove and a side hole.

[0040] Furthermore, in step six, the installation and fixing sequence of adjacent precast blocks is as follows:

[0041] Fill the lateral holes with an adhesive layer;

[0042] Lay the left precast block;

[0043] Install the tie plate inside the left precast block;

[0044] Construct the right precast block, inserting the right end of the tie plate into the lateral hole at the left end of the right precast block;

[0045] The tie plate has a vertical plate perpendicular to it, which is located in the vertical grooves on both sides of the precast block dividing line; the top of the vertical plate has a top plate perpendicular to it, and the top of the top plate is filled with sealing mortar, the top elevation of the sealing mortar is flush with the top of the precast block.

[0046] The integrated hollow precast block combination ecological revetment is constructed using the aforementioned integrated hollow precast block combination ecological revetment construction method.

[0047] Compared with the prior art, this application has the following beneficial effects:

[0048] 1. This application achieves deep stabilization of the revetment foot by combining a combined revetment foot structure. An anchoring structure is installed within the foot foundation, which serves to: ① strengthen the bearing capacity of the foot foundation; ② fix the anchoring bars within the steel pipe piles; ③ serve as the bottom fixing point for the precast block tie bars, achieving bottom consolidation of the tie bars.

[0049] 2. The upper and lower sections of the precast blocks in this application are connected by tie bars, which are then solidified by backfill mortar in the reserved holes, connecting the precast blocks into a whole and improving the overall stability of the precast block revetment structure; at the same time, the left and right sections of the precast blocks in this application are connected by tie plates, which improves the connection strength of the precast blocks. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the revetment structure for this application;

[0051] Figure 2 This is a schematic diagram showing the connection between steel pipe piles and anchorage structures.

[0052] Figure 3 This is a schematic diagram showing the connection between the upper and lower precast blocks;

[0053] Figure 4 This is a schematic diagram showing the connection between the left and right precast blocks;

[0054] Figure 5 This is a top view of the precast block;

[0055] Figure 6 This is a side view of the precast block.

[0056] In the diagram, 1. Subbase; 2. Cutoff wall; 3. Forefoot; 4. Steel pipe pile; 5. Anchor bar; 6. Lower anchor bolt; 7. Upper anchor bolt; 8. Post-cast concrete; 9. Foot foundation; 10. Lower ring steel plate; 11. Column; 12. Upper ring steel plate; 13. Connecting plate; 14. Precast block; 15. Backfill with crushed stone; 16. Reserved hole; 17. Connecting bolt; 18. Lower layer tie bar; 19. Upper layer tie bar; 20. Connecting sleeve; 21. Coping steel plate; 22. Coping mortar; 23. Backfill mortar; 4. Bonding mortar; 25. Backfill soil; 26. Vegetation; 27. Coping; 28. Geogrid; 29. ​​Lower backfill soil; 30. Crushed stone layer; 31. Upper backfill soil; 32. Left precast block; 33. Right precast block; 34. Precast block boundary line; 35. Precast block body; 36. Top groove; 37. Vertical groove; 38. Lateral holes; 39. Bonding layer; 40. Tie plate; 41. Vertical plate; 42. Top plate; 43. Sealing mortar; 44. Upper precast block; 45. Lower precast block. Detailed Implementation

[0057] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0058] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0059] Example 1

[0060] like Figure 1-6 As shown, the construction method for this integrated hollow precast block combined ecological revetment includes the following construction steps:

[0061] Step 1: Apply foot protector to the front toes:

[0062] A row of anti-seepage walls 2 is constructed at the water-facing end of the front toe of the revetment foundation, and a pressing toe 3 is constructed on top of the anti-seepage walls 2.

[0063] Step 2: Construct steel pipe pile 4:

[0064] S1. Drive multiple rows of steel pipe piles 4 deep beneath the foundation 9 of the revetment.

[0065] In this embodiment, anchor bars 5 are installed inside the steel pipe pile 4, with lower anchor bolts 6 at the bottom and upper anchor bolts 7 at the top. The lower anchor bolts 6 tie the anchor bars 5 to the bottom end of the steel pipe pile 4. After the steel pipe pile 4 is poured, concrete 8 is poured in.

[0066] S2. After the seepage prevention wall 2, construct a layer 1 at the bottom of the footing foundation 9 to be constructed.

[0067] Step 3: Install the anchoring structure:

[0068] An anchoring unit is constructed at the top of the steel pipe pile 4 and within the foot foundation 9 to be constructed.

[0069] In this embodiment, a lower annular steel plate 10 is installed at the top of each steel pipe pile 4. The lower annular steel plate 10 is connected to an upper annular steel plate 12 through multiple columns 11. The lower annular steel plate 10, columns 11, and upper annular steel plate 12 constitute an integral anchoring unit. Connecting plates 13 are provided between multiple transverse anchoring units.

[0070] In this embodiment, the top end of the anchor bar 5 is fixed to the lower annular steel plate 10 by the upper anchor bolt 7.

[0071] Step 4: Pour the foundation stone 9:

[0072] The footing foundation 9 is poured on the cushion layer 1, and the top of the anchoring unit and the steel pipe pile 4 are poured inside the footing foundation 9.

[0073] Step 5: Backfill the back wall with soil.

[0074] Backfill the wall back soil behind the precast block 14, and the wall back soil is laid simultaneously with the masonry of the precast block 14.

[0075] In this embodiment, the backfill soil is divided into a lower backfill soil 29 and an upper backfill soil 31 by a gravel layer 30. The gravel layer 30 is located at the water level.

[0076] Step 6: Laying out double-row precast blocks 14:

[0077] Precast blocks 14 are laid on top of the foundation. The lower part of the revetment consists of double rows of precast blocks 14, which is more conducive to resisting the impact of water flow. Geogrid 28 is installed between every two layers of precast blocks 14.

[0078] In this embodiment, the connection method between the bottom precast block 14 and the foot protection foundation is as follows:

[0079] The left side of the precast block 14 has a reserved hole 16. The bottom precast block 14 has a lower tie rod 18 inserted into the reserved hole 16. The bottom end of the lower tie rod 18 is fixed to the upper annular steel plate 12 by a connecting bolt 17.

[0080] In this embodiment, the connection method between the upper and lower precast blocks 45 is as follows:

[0081] The upper precast block 44 and the lower precast block 45 are stacked in a staggered manner, with bonding mortar 24 between them. The left side of the precast block 14 has a reserved hole 16, within which are upper tie bars 19 and lower tie bars 18, connected as a single unit by a connecting sleeve 20. The reserved hole 16 is filled with backfill mortar 23, and a capping steel plate 21 and sealing mortar 22 are applied to the top of the backfill mortar 23.

[0082] In this embodiment, the connection method of the left and right columns of prefabricated blocks 14 is as follows:

[0083] The left precast block 32 and the right precast block 33 are connected at the precast block dividing line 34. The adjacent joint of the two precast block bodies 35 has a top groove 36, a vertical groove 37 and a side hole 38.

[0084] The installation and fixing sequence of adjacent precast blocks 14 is as follows:

[0085] S1. Fill the lateral hole 38 with adhesive layer 39;

[0086] S2, Construct the left precast block 32;

[0087] S3. Install the tie plate 40 inside the left precast block 32;

[0088] S4. Construct the right precast block 33, inserting the right end of the tie plate 40 into the left-side lateral hole 38 of the right precast block 33. The tie plate 40 has a vertical plate 41 perpendicular to it, which is located in the vertical grooves 37 on both sides of the precast block dividing line 34;

[0089] S5. The top of the vertical plate 41 has a top plate 42 perpendicular to it. The top of the top plate 42 is filled with sealing mortar 43, and the top elevation of the sealing mortar 43 is flush with the top of the precast block 14.

[0090] Step 7: Lay out 14 rows of precast blocks:

[0091] The upper layer is constructed using a single-row precast block 14, and the connection method between the precast blocks 14 is the same as that for the double-row precast blocks 14.

[0092] Step 8, Construction of the capping 27:

[0093] Concrete capping 27 is constructed on the top of the precast block 14.

[0094] Step Nine, Planting Vegetation 26:

[0095] Crushed stone 15 is backfilled into the cavity of the double-row precast block 14, soil 25 is backfilled into the cavity of the single-row precast block 14, and vegetation 26 is planted in the backfilled soil 25.

[0096] Example 2

[0097] The integrated hollow precast block combination ecological revetment is constructed using the integrated hollow precast block combination ecological revetment construction method described in Example 1.

[0098] The parts not described in detail in this application are prior art, and therefore are not described in detail in this application.

[0099] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0100] Although this paper extensively uses the following terms: 1. cushion layer; 2. impermeable wall; 3. front toe of the foundation; 4. steel pipe pile; 5. anchoring bar; 6. lower anchor bolt; 7. upper anchor bolt; 8. post-cast concrete; 9. foundation foot; 10. lower ring steel plate; 11. column; 12. upper ring steel plate; 13. connecting plate; 14. precast block; 15. backfill crushed stone; 16. reserved hole; 17. connecting bolt; 18. lower tie bar; 19. upper tie bar; 20. connecting sleeve; 21. capping steel plate; 22. capping mortar; 23. backfill mortar; 24. bonding mortar. The terms used include: soil (25), vegetation (26), coping (27), geogrid (28), lower backfill (29), crushed stone layer (30), upper backfill (31), left precast block (32), right precast block (33), precast block boundary line (34), precast block body (35), top groove (36), vertical groove (37), lateral hole (38), bonding layer (39), tie plate (40), vertical plate (41), top plate (42), sealing mortar (43), upper precast block (44), and lower precast block (45), etc., but the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this application; interpreting them as any additional limitation would be contrary to the spirit of this application.

[0101] This application is not limited to the above-described preferred embodiments. Anyone can derive other products in various forms under the guidance of this application. However, regardless of any changes made to their shape or structure, any product with the same or similar technical solution as this application falls within the protection scope of this application.

Claims

1. A construction method for an integrated hollow precast block combined ecological revetment, characterized in that, The construction steps include the following: Step 1: Apply foot protector to the front toes: A row of anti-seepage walls (2) is constructed at the water-facing end of the front toe of the revetment foundation, and a pressing foot front toe (3) is constructed on top of the anti-seepage walls (2). Step 2: Construction of steel pipe piles (4): Multiple rows of steel pipe piles (4) are driven deep into the lower part of the revetment foot foundation (9). A cushion layer (1) is constructed at the bottom of the foot foundation (9) to be constructed behind the seepage barrier (2). Step 3: Install the anchoring structure: An anchoring unit is constructed at the top of the steel pipe pile (4) and within the foot foundation (9) to be constructed. Step 4: Pour the foundation stone: The foot foundation (9) is poured on the cushion layer (1), and the top of the anchoring unit and the steel pipe pile (4) is poured into the foot foundation (9); Step 5: Backfill the back wall with soil. Backfill the wall back soil behind the precast block (14), and the wall back soil is laid simultaneously with the masonry of the precast block (14); Step Six: Laying out double-row precast blocks: Precast blocks (14) are laid on top of the foot foundation (9). The lower part of the revetment is composed of two rows of precast blocks (14), and geogrids (28) are installed between every two layers of precast blocks (14). Step 7: Lay out a single row of precast blocks: The upper layer is constructed using single-row precast blocks (14), and the connection method between the precast blocks (14) is the same as that between double-row precast blocks (14); Step 8, Construction of the capping (27): Concrete capping (27) is constructed on the top of the precast block (14). Step 9: Planting vegetation (26): Backfill with crushed stone (15) in the cavity of the double-row precast block (14), backfill with soil (25) in the cavity of the single-row precast block (14), and plant vegetation (26) in the backfill soil (25).

2. The construction method for the integrated hollow precast block combined ecological revetment according to claim 1, characterized in that, In step two, anchor bars (5) are installed inside the steel pipe pile (4), and the bottom and top of the anchor bars (5) are respectively provided with lower anchor bolts (6) and upper anchor bolts (7). The anchoring bar (5) is pulled to the bottom end of the steel pipe pile (4) by the lower anchoring bolt (6); After the steel pipe pile (4) is poured, concrete (8) is poured into the cavity.

3. The construction method for the integrated hollow precast block combined ecological revetment according to claim 1, characterized in that, In step three, a lower annular steel plate (10) is installed at the top of each steel pipe pile (4). The lower annular steel plate (10) is connected to the upper annular steel plate (12) through multiple columns (11), so that the lower annular steel plate (10), the columns (11), and the upper annular steel plate (12) form an integral anchoring unit, and a connecting plate (13) is set between multiple transverse anchoring units.

4. The construction method for the integrated hollow precast block combined ecological revetment according to claim 3, characterized in that, In step three, the top of the anchor bar (5) is fixed to the lower annular steel plate (10) by the upper anchor bolt (7).

5. The construction method for the integrated hollow precast block combined ecological revetment according to claim 1, characterized in that, In step five, the backfill soil is divided into a lower backfill soil (29) and an upper backfill soil (31) by a gravel layer (30), and the gravel layer (30) is located at the water level.

6. The construction method for the integrated hollow precast block combined ecological revetment according to claim 3, characterized in that, In step six, the connection method between the precast block (14) at the bottom and the foot foundation (9) is as follows: The left side of the precast block (14) is provided with a reserved hole (16), and the reserved hole (16) of the bottommost precast block (14) is provided with a lower layer tie rod (18), and the bottom end of the lower layer tie rod (18) is fixed to the upper annular steel plate (12) by a connecting bolt (17).

7. The construction method for the integrated hollow precast block combined ecological revetment according to claim 6, characterized in that, In step six, the connection method between the upper and lower precast blocks (45) is as follows: The upper precast blocks (44) and the lower precast blocks (45) are stacked in a staggered manner, and there is bonding mortar (24) between the upper precast blocks (44) and the lower precast blocks (45). The left side of the precast block (14) is provided with a reserved hole (16), and the reserved hole (16) contains an upper tie rod (19) and a lower tie rod (18), which are connected as one unit by a connecting sleeve (20); Fill the reserved hole (16) with backfill mortar (23), and construct a capping steel plate (21) and capping mortar (22) on top of the backfill mortar (23).

8. The construction method for the integrated hollow precast block combined ecological revetment according to claim 7, characterized in that, In step six, the connection method of the left and right columns of precast blocks (14) is as follows: The left precast block (32) and the right precast block (33) are connected at the precast block dividing line (34), and the adjacent joint of the two precast block bodies (35) has a top groove (36), a vertical groove (37) and a side hole (38).

9. The construction method for the integrated hollow precast block combined ecological revetment according to claim 8, characterized in that, In step six, the installation and fixing sequence of the adjacent precast blocks (14) is as follows: Apply an adhesive layer (39) into the lateral holes (38); Construct the left precast block (32); Install the tie plate (40) inside the left precast block (32); Construct the right precast block (33), and insert the right end of the tie plate (40) into the left end lateral hole (38) of the right precast block (33); The tie plate (40) has a vertical plate (41) perpendicular to it, and the vertical plate (41) is located in the vertical groove (37) on both sides of the precast block dividing line (34); the top of the vertical plate (41) has a top plate (42) perpendicular to it, and the top of the top plate (42) is filled with sealing mortar (43), and the top elevation of the sealing mortar (43) is flush with the top of the precast block (14).

10. An integrated hollow precast block combined ecological revetment, characterized in that it is manufactured by the construction method of the integrated hollow precast block combined ecological revetment as described in any one of claims 1-9.

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