Steel stiff pile retaining wall and construction method thereof

Abstract

The application relates to a type steel stiff pile retaining wall and a construction method thereof, which comprises the following steps: S1, type steel setting; S2, stiff pile forming; S3, concrete top plate construction; and S4, road shoulder retaining wall construction: after the bottom of the retaining wall is cleaned, the retaining wall formwork construction is carried out. When the type steel stiff pile retaining wall is constructed, a type steel pressing guide device, a shaped reinforced concrete top plate formwork structure, a retaining wall rapid construction guide formwork structure and a post-grouting pile forming technology are used. The application has the advantages of low type steel setting difficulty and good pile forming effect, and has good benefits.

Description

Technical Field

[0001] This application relates to the field of building engineering technology, specifically to steel reinforced pile retaining walls and their construction methods. Background Technology

[0002] For a long time, civil engineers have used various methods to prevent and control landslides, with the vast majority utilizing traditional methods such as anti-slide piles, concrete frame beams, and retaining walls. With the development of disaster prevention technology, steel-reinforced piles, due to their excellent reinforcement effect and economy, are increasingly being used in the treatment of roadbed slopes. Steel-reinforced piles generally refer to piles made from scrap steel rails, inserted into pre-drilled holes manually or driven into the soil and rock mass using light machinery. Cement mortar or fine aggregate concrete is then poured into the hole, and the grout enters the surrounding soil and rock mass through the pile wall or bottom, solidifying the soil and rock mass through compression and fracturing. The pile tops are connected by concrete tie beams, forming a spatial composite load-bearing structure of frame beams, steel sections, and soil and rock mass that shares the load.

[0003] The following challenges are encountered when constructing steel reinforced pile retaining walls:

[0004] (1) The positioning deviation occurred during the pressing of the steel section, resulting in poor quality of the finished stiffened pile;

[0005] (2) The formwork for the concrete top slab and the retaining wall on the shoulder is difficult to fix due to the terrain limitations on the steep side;

[0006] (3) How to reuse waste steel profiles.

[0007] In view of this, in response to a series of problems that arise during the construction of steel-reinforced pile retaining walls, there is an urgent need for a simple and effective steel-reinforced pile retaining wall and its construction method, so as to reduce the difficulty of formwork support for concrete top slabs and shoulder retaining walls, reduce construction safety risks, and accelerate construction progress. Summary of the Invention

[0008] The purpose of this application is to address the aforementioned problems in the prior art by providing a steel-reinforced pile retaining wall and its construction method.

[0009] To achieve the aforementioned objectives, this application adopts the following technical solution: The construction method for steel-reinforced pile retaining walls includes the following construction steps:

[0010] S1. Steel section installation: After the site leveling and construction surveying are completed, the pressing machine is positioned, and the pressing guide device is moved under the pressing machine;

[0011] After the guide device is positioned, the fixing rod of the guide device is inserted into the soil. A cone and a grouting pipe are installed at the end of the steel section. After the steel section is positioned and checked to be correct, it is inserted into the soil.

[0012] S2. Constructing rigid piles: After checking the airtightness of the grouting pipe, grout is injected. After grouting is completed, the pile body is protected as a finished product.

[0013] S3. Construction of concrete roof slab: Replace the reinforcing steel bars of the roof slab with the same amount of shaped steel, and then carry out the formwork construction;

[0014] Reinforcing bars are welded to the upper part of the stiff pile. The reinforcing bars are connected to the stabilizing steel pipe. The other end of the stabilizing steel pipe is connected to the inclined steel pipe. The other end of the inclined steel pipe is connected to the outer rib connecting steel pipe and the outer rib respectively. The inner rib is tightly attached to the steel formwork.

[0015] Steel sections are installed inside the concrete top slab, and concrete is poured after the formwork is inspected.

[0016] S4. Shoulder retaining wall construction: After the bottom of the retaining wall is cleaned up, the retaining wall formwork is constructed.

[0017] A second sleeve is pre-embedded in the concrete top slab, and a channel steel is set in the direction of the road shoulder retaining wall. The channel steel is fixed to the concrete top slab with bolts.

[0018] A special-shaped component is installed inside the channel steel, and a fixing hole is provided on the special-shaped component;

[0019] Rolling wheels are installed at the bottom of the steel pipe frame, and the rolling wheels are embedded in the channel steel. The steel pipe frame is fixed by inserting long screws into the irregular parts.

[0020] A flexible telescopic rod is installed on the steel pipe frame, and a hinge hole is installed at the connection between the flexible telescopic rod and the steel pipe frame;

[0021] The outer rib is fixed by No. 1 fixed steel pipe and No. 2 fixed steel pipe, and the outer rib is connected to the inner rib.

[0022] Furthermore, in step S1, the end of the steel section is provided with an upper connecting plate, and a connecting hole is provided on the upper connecting plate, into which the grouting pipe is inserted;

[0023] The steel section is inserted into the hole of the stiffening pile, the upper connecting plate and the lower connecting plate are bolted together, and a cone is welded to the lower connecting plate.

[0024] Further, in step S1, the pressing guide device includes four steel plates and multiple L-shaped telescopic rods. A connecting plate is set on the steel plate, and a first sleeve is inserted into the connecting plate. One end of the L-shaped telescopic rod is connected to the first sleeve, and the other end is connected to a rolling wheel. The rolling wheel presses against the steel section. Vertical rods are welded to the lower part of the steel plates, and the vertical rods are fixed together by connecting rods. A second sleeve is welded at the connection between the vertical rod and the diagonal brace. A fixing rod is inserted into the second sleeve, and a moving device is set at the lower part of the diagonal brace.

[0025] Furthermore, the geological conditions upon which the steel-reinforced pile retaining wall is supported consist of plain fill, silty clay, and moderately weathered rock layers.

[0026] Furthermore, in steps S1-S4, the stiffened piles are driven into the moderately weathered rock layer, a concrete top slab is installed on the top of the stiffened piles at the steep end, a road shoulder retaining wall is installed on the concrete top slab, a road surface is installed above the road shoulder retaining wall, and a drainage ditch is installed on the right side of the road surface.

[0027] Furthermore, the retaining wall on the shoulder is equipped with drainage holes.

[0028] The steel-reinforced pile retaining wall is constructed using the steel-reinforced pile retaining wall construction method described above.

[0029] Compared with the prior art, this application has the following beneficial effects:

[0030] 1. This application sets a cone and a pressing guide device on the steel profile, which reduces the difficulty of steel profile installation and the problem of steel profile positioning;

[0031] 2. This application utilizes stiffened piles to install reinforcing bars, achieving self-stabilization of the concrete roof slab formwork, solving the problem of formwork support on the free-faced concrete roof slab in steep terrain, and avoiding construction risks.

[0032] 3. This application replaces the reinforcing steel bars in the concrete slab with the same amount of shaped steel, realizing the secondary use of the shaped steel, reducing the amount of reinforcing steel material input, and saving project costs;

[0033] 4. This application uses movable shoulder retaining wall formwork (such as...). Figure 7 This reduces the formwork time for the shoulder retaining wall on the open side, lowers the construction risk of the shoulder retaining wall, and enables efficient and rapid construction of the shoulder retaining wall. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the steel-reinforced pile retaining wall of the present invention;

[0035] Figure 2 This is a schematic diagram of grouting for steel reinforced piles;

[0036] Figure 3 This is a schematic diagram of the end connection of the steel section;

[0037] Figure 4 This is a schematic diagram of a movable steel profile pressing guide device;

[0038] Figure 5 This is a plan view of the movable steel profile pressing guide device;

[0039] Figure 6 This is a schematic diagram of the concrete roof slab formwork construction;

[0040] Figure 7 This is a schematic diagram of the formwork construction for the retaining wall on the road shoulder.

[0041] In the diagram: 1. Plain fill; 2. Concrete roof slab; 3. Shoulder retaining wall; 4. Drainage hole; 5. Road surface; 6. Drainage ditch; 7. Silty clay; 8. Moderately weathered rock strata; 9. Steel section; 10. Grouting pipe; 11. Reinforced pile hole; 12. Connecting hole; 13. Upper connecting plate; 14. Lower connecting plate; 15. Cone; 16. Moving device; 17. Diagonal brace; 18. Second sleeve; 19. Fixed rod; 20. Vertical rod; 21. Connecting rod; 22. Press-in guide device; 23. Rolling. 24. Wheel; 25. Steel plate; 26. L-shaped telescopic rod; 27. Bolt; 28. Connecting plate; 29. ​​Inner rib; 30. Steel formwork; 31. Reinforcing bar; 32. Stabilizing steel pipe; 33. Outer rib connecting steel pipe; 34. Inclined steel pipe; 35. Stiff pile; 36. Irregular part; 37. Channel steel; 38. Long screw; 39. Steel pipe frame; 40. No. 1 fixed steel pipe; 41. Fixing hole; 42. Flexible telescopic rod; 43. Hinge hole; 44. No. 2 fixed steel pipe; 45. Outer rib; 46. First sleeve. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] Example 1

[0045] like Figure 1 As shown in this embodiment, the geological conditions on which the steel-reinforced pile retaining wall is supported consist of plain fill soil 1, silty clay 7, and moderately weathered rock layer 8.

[0046] like Figure 2-7 As shown, the construction method for this type of steel-reinforced pile retaining wall includes the following construction steps:

[0047] S1, Steel Section 9 Installation: After the site leveling and construction measurement procedures are completed, the pressing machine is positioned, and the pressing guide device 22 is moved under the pressing machine;

[0048] After the guide device 22 is positioned, the fixing rod 19 of the guide device 22 is inserted into the soil. The end of the steel section 9 is equipped with a cone 15 and a grouting pipe 10. After the steel section 9 is positioned and checked, it is inserted into the soil.

[0049] Among them, such as Figure 2-3 As shown, the end of the steel section 9 is provided with an upper connecting plate 13, and a connecting hole 12 is provided on the upper connecting plate 13. The grouting pipe 10 is inserted into the connecting hole 12, and the steel section 9 is inserted into the stiffening pile hole 11. The upper connecting plate 13 and the lower connecting plate 14 are bolted together, and a cone 15 is welded on the lower connecting plate 14.

[0050] Among them, such as Figure 4-5 As shown, the pressing guide device 22 includes four steel plates 24 and multiple L-shaped telescopic rods 25. A connecting plate 27 is set on the steel plate 24, and a first sleeve 45 is inserted into the connecting plate 27. One end of the L-shaped telescopic rod 25 is connected to the first sleeve 45, and the other end is connected to a rolling wheel 23. The rolling wheel 23 presses against the steel section 9. Vertical rods 20 are welded to the lower part of the steel plate 24. The vertical rods 20 are fixed together by connecting rods 21. A second sleeve 18 is welded at the connection between the vertical rod 20 and the diagonal brace 17. A fixing rod 19 is inserted into the second sleeve 18. A moving device 16 is set at the lower part of the diagonal brace 17.

[0051] S2. Constructing rigid piles: After checking the airtightness of the grouting pipe 10, grout is injected. After grouting is completed, the pile body is protected as a finished product.

[0052] S3, Construction of Concrete Top Slab 2: Replace the top slab reinforcement with the same amount of formed steel 9, and then carry out formwork construction;

[0053] like Figure 6 As shown, a reinforcing bar 30 is welded to the upper part of the stiff pile 34. The reinforcing bar 30 is connected to the stabilizing steel pipe 31. The other end of the stabilizing steel pipe 31 is connected to the inclined steel pipe 33. The other end of the inclined steel pipe 33 is connected to the outer rib connecting steel pipe 32 and the outer rib 44 respectively. The inner rib 28 is close to the steel formwork 29.

[0054] Steel section 9 is installed inside the concrete top slab 2, and concrete is poured after the formwork is inspected.

[0055] S4, Road Shoulder Retaining Wall 3 Construction: After the bottom of the retaining wall is cleaned up, the retaining wall formwork construction will be carried out;

[0056] like Figure 7 As shown, a second sleeve 18 is pre-embedded in the concrete top slab 2, and a channel steel 36 is set in the direction of the road shoulder retaining wall 3. The channel steel 36 is fixed to the concrete top slab 2 by bolts 26.

[0057] A special-shaped part 35 is provided inside the channel steel 36, and a fixing hole 40 is provided on the special-shaped part 35;

[0058] Rolling wheels 23 are installed at the bottom of the steel pipe frame 38. The rolling wheels 23 are embedded in the channel steel 36. The steel pipe frame 38 is fixed by inserting a long screw 37 into the irregular part 35.

[0059] A flexible telescopic rod 41 is installed on the steel pipe frame 38, and a hinge hole 42 is provided at the connection between the flexible telescopic rod 41 and the steel pipe frame 38.

[0060] The outer rib 44 is fixed by the first fixed steel pipe 39 and the second fixed steel pipe 43, and the outer rib 44 is connected to the inner rib 28.

[0061] Among them, the shoulder retaining wall 3 is equipped with drainage holes 4.

[0062] In this embodiment, the stiffened pile 34 is driven into the moderately weathered rock layer 8. A concrete top slab 2 is set on the top of the stiffened pile 34 at the steep end. A road shoulder retaining wall 3 is set on the concrete top slab 2. A road surface 5 is set above the road shoulder retaining wall 3. A drainage ditch 6 is set on the right side of the road surface 5.

[0063] Example 2

[0064] The steel-reinforced pile retaining wall is constructed using the steel-reinforced pile retaining wall construction method described in Example 1.

[0065] The parts not described in detail in this application are prior art, and therefore are not described in detail in this application.

[0066] 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.

[0067] Although this document uses a significant amount of technical terminology, the possibility of using other terms is not excluded. These terms are used merely to facilitate the description and explanation of the nature of this application; interpreting them as any additional limitation would be contrary to the spirit of this application.

[0068] 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 technical solution that is the same as or similar to that of this application falls within the protection scope of this application.

Claims

1. A construction method for steel reinforced pile retaining walls, characterized in that, The construction steps include the following: S1, Steel section (9) installation: After the site leveling and construction measurement procedures are completed, the pressing machine is in place, and the pressing guide device (22) is moved under the pressing machine; After the pressing guide device (22) is positioned, the fixing rod (19) of the pressing guide device (22) is inserted into the soil. The end of the steel section (9) is provided with a cone (15) and a grouting pipe (10). After the positioning of the steel section (9) is checked and confirmed to be correct, it is inserted into the soil. S2, stiffening pile construction; after checking the airtightness of the grouting pipe (10), grout is injected, and the pile body is protected after grouting is completed; S3, Concrete Top Slab (2) Construction: The top slab reinforcement is replaced with the same amount of shaped steel (9), and then the formwork is constructed; A reinforcing bar (30) is welded to the upper part of the stiff pile (34). The reinforcing bar (30) is connected to the stabilizing steel pipe (31). The other end of the stabilizing steel pipe (31) is connected to the inclined steel pipe (33). The other end of the inclined steel pipe (33) is connected to the outer rib connecting steel pipe (32) and the outer rib (44) respectively. The inner rib (28) is close to the steel formwork (29). Steel sections (9) are installed inside the concrete top slab (2), and concrete is poured after the formwork is inspected. S4, Road shoulder retaining wall (3) construction: After the bottom of the retaining wall is cleaned, the retaining wall formwork construction is carried out; A second sleeve (18) is pre-embedded on the concrete top slab (2), and a channel steel (36) is set along the length of the shoulder retaining wall (3). The channel steel (36) is fixed to the concrete top slab (2) by bolts (26). A special-shaped part (35) is provided inside the channel steel (36), and a fixing hole (40) is provided on the special-shaped part (35); Rolling wheels (23) are installed at the bottom of the steel pipe frame (38), and the rolling wheels (23) are embedded in the channel steel (36). The steel pipe frame (38) is fixed by inserting a long screw (37) into the irregular part (35). A flexible telescopic rod (41) is provided on the steel pipe frame (38), and a hinge hole (42) is provided at the connection between the flexible telescopic rod (41) and the steel pipe frame (38). The outer rib (44) is fixed by a first fixed steel pipe (39) and a second fixed steel pipe (43), and the outer rib (44) is connected to the inner rib (28).

2. The construction method for steel-reinforced pile retaining walls according to claim 1, characterized in that, In step S1, the end of the steel section (9) is provided with an upper connecting plate (13), and a connecting hole (12) is provided on the upper connecting plate (13), into which the grouting pipe (10) is inserted. The steel section (9) is inserted into the stiffening pile hole (11), the upper connecting plate (13) and the lower connecting plate (14) are bolted together, and a cone (15) is welded on the lower connecting plate (14).

3. The construction method for steel-reinforced pile retaining walls according to claim 1, characterized in that, In step S1, the pressing guide device (22) includes four steel plates (24) and multiple L-shaped telescopic rods (25). A connecting plate (27) is set on the steel plate (24). A first sleeve (45) is inserted into the connecting plate (27). One end of the L-shaped telescopic rod (25) is connected to the first sleeve (45), and the other end is connected to a rolling wheel (23). The rolling wheel (23) presses against the steel section (9). A vertical rod (20) is welded to the lower part of the steel plate (24). The vertical rods (20) are fixed together by a connecting rod (21). A second sleeve (18) is welded at the connection between the vertical rod (20) and the diagonal brace (17). A fixing rod (19) is inserted into the second sleeve (18). A moving device (16) is set at the lower part of the diagonal brace (17).

4. The construction method for steel-reinforced pile retaining walls according to any one of claims 1-3, characterized in that, The geological conditions on which the steel-reinforced pile retaining wall is based consist of plain fill (1), silty clay (7), and moderately weathered rock layer (8).

5. The construction method for steel-reinforced pile retaining walls according to claim 4, characterized in that, In steps S1-S4, the stiffened pile (34) is driven into the moderately weathered rock layer (8), a concrete top plate (2) is set on the top of the stiffened pile (34) at the steep end, a road shoulder retaining wall (3) is set on the concrete top plate (2), a road surface (5) is set above the road shoulder retaining wall (3), and a drainage ditch (6) is set on the right side of the road surface (5).

6. The construction method for steel-reinforced pile retaining walls according to claim 5, characterized in that, The shoulder retaining wall (3) is provided with drainage holes (4).

7. A steel-reinforced pile retaining wall, characterized in that, The steel-reinforced pile retaining wall is constructed using the construction method described in any one of claims 1-6.

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