Retaining wall reinforcing structure

Abstract

The utility model discloses a retaining wall reinforcing structure and relates to the technical field of water conservancy projects. According to the retaining wall reinforcing structure, a retaining wall is arranged on the upstream side of a riverway, and the top end of the retaining wall is flush with the ground line; the steel pipe micro pile devices are arranged between a river channel and a building in double rows; the multiple double-pipe jet grouting piles are arranged between the steel pipe micro pile devices, and cement paste is poured into the double-pipe jet grouting piles and used for preventing water molecules from permeating. The top beam is arranged at the top of the steel pipe micro pile device; the steel pipe micro pile device comprises a steel pipe micro pile and a steel pipe which is arranged in the steel pipe micro pile and filled with concrete. By the adoption of the technical scheme, potential safety hazards of the structure of the riverway retaining wall are avoided, the overall stability and bearing capacity are improved, it can be guaranteed that an adjacent building is not affected by reinforcement under the condition that the space is limited, overall safety is high, and construction efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, specifically to a retaining wall reinforcement structure. Background Technology

[0002] Retaining walls, a common civil engineering structure, are widely used in roads, river embankments, high-speed railways, and other projects to prevent soil erosion and protect land stability. A retaining wall is a structure that supports roadbed fill or hillside soil, preventing deformation and instability of the fill or soil mass. It is also widely used in comprehensive river management. Existing types of retaining walls mainly include gravity retaining walls, counterweight retaining walls, anchored retaining walls, and thin-walled retaining walls. Gravity retaining walls rely on their own weight to balance soil pressure, featuring simple structure and convenient construction, but suffer from drawbacks such as large material consumption and high foundation requirements. Counterweight retaining walls optimize stability by using counterweight platforms, reducing wall height, but have poor adaptability to soft foundations. Anchored retaining walls require complex anchoring processes and have long construction cycles. Thin-walled retaining walls, while possessing good bending resistance, require a large working space. In urban river water environment management projects, some river sections have buildings close to the riverbanks, leaving very limited space for design. Traditional retaining wall construction requires large-scale excavation and support, which is difficult to implement in densely built-up areas. Deep foundation pit operations are prone to soil displacement, threatening the safety of surrounding buildings and structures, and are time-consuming and have poor landscape coordination. Therefore, improvements are urgently needed. Utility Model Content

[0003] The purpose of this utility model is to address the defects and shortcomings of existing technologies by providing a retaining wall reinforcement structure that effectively solves the safety hazards of river retaining walls, prevents soil displacement, improves overall stability and bearing capacity, ensures that adjacent buildings are not affected by reinforcement under limited space, has high overall safety, and improves construction efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a retaining wall reinforcement structure, comprising:

[0005] A retaining wall is installed on the water-facing side of the river channel, with the top of the retaining wall level with the ground line;

[0006] Steel pipe micropiles are arranged in two rows between waterways and buildings;

[0007] A number of double-tube jet grouting piles are arranged between the steel pipe micropile devices. The double-tube jet grouting piles are filled with cement grout to prevent water penetration.

[0008] A cap beam is installed at the top of the steel pipe micropile device;

[0009] The steel pipe micropile device includes: a steel pipe micropile, and a steel pipe embedded in the steel pipe micropile and filled with concrete.

[0010] The present invention further provides that the steel pipe micropiles are arranged in two parallel rows between the river and the building; the row spacing and the distance between the steel pipe micropiles are both equidistant.

[0011] The present invention further provides that the spacing between the steel pipe micropiles is 300mm-500mm; and the row spacing between the steel pipe micropiles is 450mm-850mm.

[0012] The present invention further comprises that the diameter of the steel pipe accounts for 82% of the diameter of the steel pipe micropile; the diameter of the steel pipe is 120mm-160mm; and the diameter of the steel pipe micropile is 150mm-200mm.

[0013] The present invention further provides that the length of the steel pipe micropile is 6m-12m.

[0014] The present invention further provides that the outer surface of the steel pipe is coated with an epoxy coal tar pitch layer for corrosion protection.

[0015] The present invention further provides that the diameter of the double-pipe jet grouting pile is 500mm-900mm and the length of the double-pipe jet grouting pile is 7m-10m.

[0016] The present invention further includes a steel reinforcement skeleton inside the crown beam for rigid connection with the top of the steel pipe micropile device.

[0017] The present invention further includes, in that the retaining wall reinforcement structure, a drainage pipe passing through the retaining wall.

[0018] The present invention further includes, in addition to, a railing installed at the end of the retaining wall near the river channel.

[0019] The beneficial effects of this utility model after adopting the above technical solution are as follows: In this utility model, by setting up a double-row steel pipe micropile device and a double-pipe jet grouting pile, wherein the steel pipe micropile device includes a steel pipe micropile and a steel pipe built into the steel pipe micropile, the double-row micropile is set up and concrete is poured into it, which significantly improves the stability and bearing capacity of the overall structure, effectively prevents soil slippage or collapse, and compared with the traditional retaining wall reinforcement method, the construction of steel pipe micropile does not require large-scale excavation, which solves the problem of reducing the reinforcement impact on adjacent buildings or the surrounding environment in limited space, with higher overall safety and improved construction efficiency; the double-pipe jet grouting pile and the cement grouting in it not only enhance the consolidation strength of the foundation, but also form an effective water-stop curtain, reducing the infiltration of water molecules and protecting the buildings behind from the impact of groundwater erosion. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural diagram of the retaining wall reinforcement structure;

[0022] Figure 2 This is another structural diagram of the retaining wall reinforcement structure.

[0023] Explanation of reference numerals in the attached drawings: 100, retaining wall; 110, wall body; 120, base; 200, steel pipe micropile device; 210, steel pipe micropile; 220, steel pipe; 300, double-pipe jet grouting pile; 400, capping beam; 410, steel reinforcement cage; 500, river channel; 600, building; 700, drainage pipe; 800, railing. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0026] This embodiment relates to a retaining wall reinforcement structure, referring to... Figures 1-2The system includes: a retaining wall 100, a steel pipe micropile system 200, a double-pipe jet grouting pile 300, and a capping beam 400. The retaining wall 100 is located on the upstream side of the river channel 500 to resist pressure from the river channel 500 and protect the land and buildings 600 behind it from erosion or collapse. The ends of the retaining wall 100 are flush with the ground line, improving aesthetics and further enhancing its protective function. Specifically, the retaining wall 100 includes a wall body 110 and a base 120 located on the side of the wall body 110 away from the ground line. The wall body 110 provides the primary blocking and protection, while the base 120 extends towards the river channel 500, expanding the foundation area of ​​the retaining wall 100 and increasing its resistance to overturning moments, ensuring the stability of the retaining wall 100. The steel pipe micropile system 200 is arranged in two rows between the river channel 500 and the building 600, providing strong support. The double-row arrangement enhances overall rigidity through a spatial truss effect. Specifically, the steel pipe micropile device 200 is installed by drilling, eliminating the need for large-scale earthwork excavation and reducing disturbance to the building 600. Furthermore, the drilling inclination must be strictly controlled to maintain the drill rod's verticality, improving the precise positioning and installation of the steel pipe micropile device 200. Further, the steel pipe micropile device 200 includes a steel pipe micropile 210 and a steel pipe 220 embedded within the steel pipe micropile 210 and filled with concrete. The steel pipe micropile 210 provides the necessary support to stabilize the slope or retaining wall 100, the embedded steel pipe 220 increases the overall structure's bending and shear resistance, while the concrete filling further enhances the bearing capacity and stability, strengthening the overall strength and rigidity of the pile. Specifically, the outer surface of the steel pipe 220 is coated with an epoxy coal tar pitch layer, specifically using a four-coat-one-cloth method, for corrosion protection and to extend its service life. In other embodiments, the outer surface of the steel pipe 220 may also be coated with other anti-corrosion materials. Several double-pipe jet grouting piles 300 are arranged between the steel pipe micropile devices 200, and cement grout is injected into the double-pipe jet grouting piles 300 to form a continuous seepage barrier, preventing water molecules from seeping in and cutting off the groundwater seepage path, thereby protecting the foundation of the building 600. A capping beam 400 is set on top of the steel pipe micropile devices 200, connecting all the steel pipe micropiles 210 into a whole, further improving the overall rigidity and stability. Specifically, the capping beam 400 contains a steel reinforcement skeleton 410 for rigid connection with the top of the steel pipe micropile devices 200, jointly resisting tensile and shear forces. Therefore, the combination of double-row steel pipe micropile devices 200 and double-pipe jet grouting piles 300 provides rigid support and flexible seepage prevention, meaning that even in space-constrained conditions, it will not affect the adjacent building 600, and large-scale land excavation is unnecessary, improving construction efficiency and significantly enhancing the overall structural stability and load-bearing capacity.

[0027] In this embodiment, refer to Figures 1-2The steel pipe micropiles 210 are arranged in two parallel rows between the river channel 500 and the building 600. The row spacing and the spacing between each steel pipe micropiles 210 are equidistant, ensuring uniform distribution and avoiding local stress concentration. Furthermore, the spacing between the steel pipe micropiles 210 is 400mm. In other embodiments, the spacing between the steel pipe micropiles 210 can also be 300mm, 325mm, 350mm, 375mm, 425mm, 450mm, 475mm, 500mm, etc., as long as the spacing is within the range of 300mm-500mm; no specific limitation is made here. The spacing between the steel pipe micropiles 210 is 650mm. In other embodiments, the spacing between the steel pipe micropiles 210 can also be 450mm, 500mm, 550mm, 600mm, 700mm, 750mm, 800mm, 850mm, etc., as long as the spacing between the steel pipe micropiles 210 is within the range of 450mm-850mm, and no specific limitation is made here. By reasonably setting the spacing and row spacing of the steel pipe micropiles 210, the lateral space required for construction is effectively reduced, which is suitable for scenarios where the distance between the river channel 500mm and the building 600mm is narrow, avoiding the impact of large-scale excavation on existing buildings.

[0028] In this embodiment, the diameter of the steel pipe 220 accounts for 82% of the diameter of the steel pipe micropile 210, forming a tightly nested structure and improving the overall load-bearing capacity. The diameter of the steel pipe 220 is 140mm, and its wall thickness is 6mm, providing sufficient bending stiffness. In other embodiments, the diameter of the steel pipe 220 can also be 120mm, 125mm, 130mm, 135mm, 145mm, 150mm, 155mm, 160mm, etc., as long as the diameter of the steel pipe 220 is within the range of 120mm-160mm, and no specific limitation is made here. The diameter of the steel pipe micropile 210 is 170mm. In other embodiments, the diameter of the steel pipe micropile 210 may also be 150mm, 155mm, 160mm, 165mm, 175mm, 180mm, 185mm, 190mm, 195mm, 200mm, etc., as long as the diameter of the steel pipe micropile 210 is in the range of 150mm-200mm, and no specific limitation is made here.

[0029] Furthermore, the steel pipe micropile 210 has a length of 12m, providing sufficient vertical bearing capacity to effectively resist lateral soil pressure and river scouring. One end of the micropile penetrates at least one meter into the bedrock to form a reliable anchorage, preventing the pile from slipping or overturning. In other embodiments, the length of the steel pipe micropile 210 can also be 6m, 6.5m, 7m, 7.5m, 8m, 8.5m, 9m, 9.5m, 10m, 10.5m, 11m, 11.5m, etc., as long as the length of the steel pipe micropile 210 is within the range of 6m-12m, and no specific limitation is made here.

[0030] In this embodiment, the diameter of the double-pipe jet grouting piles 300 is 700mm, and their spacing is 400mm. This combination of diameter and spacing ensures effective overlap of the piles, enhancing the water-stop curtain and impermeability. In other embodiments, the diameter of the double-pipe jet grouting piles 300 can also be 500mm, 550mm, 600mm, 650mm, 750mm, 800mm, 850mm, 900mm, etc., as long as the diameter is within the range of 500mm-900mm. The diameter can be adjusted according to the geological conditions to ensure pile strength and water-stopping effect; no specific limitation is made here. The length of the double-pipe jet grouting piles 300 is 8.5m, ensuring the bottom of the water-stop curtain is sealed and preventing flow around the piles. In other embodiments, the length of the double-tube jet grouting pile 300 can also be 7m, 7.25m, 7.5m, 7.75m, 8m, 8.25m, 8.75m, 9m, 9.25m, 9.5m, 9.75m, 10m, etc., as long as the length of the double-tube jet grouting pile 300 is in the range of 7m-10m, and no specific limitation is made here.

[0031] In this embodiment, refer to Figure 2 The retaining wall reinforcement structure also includes a drainage pipe 700 installed on the retaining wall 100. The drainage pipe 700 can drain the water accumulated in the soil behind the retaining wall 100 in a timely manner, reduce the water pressure on the back of the wall, and prevent the retaining wall 100 from overturning or sliding due to excessive hydrostatic pressure.

[0032] Specifically, in this embodiment, the retaining wall reinforcement structure also includes a railing 800 installed at the end of the retaining wall 100 near the river channel 500, which satisfies safety protection and improves aesthetics.

[0033] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A retaining wall reinforcement structure, characterized in that, include: A retaining wall (100) is set on the water-facing side of the river channel (500), and the top of the retaining wall (100) is flush with the ground line; Steel pipe micropile devices (200) are arranged in two rows between the river channel (500) and the building (600); A number of double-tube jet grouting piles (300) are arranged between the steel pipe micropile devices (200). The double-tube jet grouting piles (300) are filled with cement grout to prevent water molecules from penetrating. A cap beam (400) is installed on top of the steel pipe micropile device (200); The steel pipe micropile device (200) includes: a steel pipe micropile (210), and a steel pipe (220) embedded in the steel pipe micropile (210) and filled with concrete.

2. The retaining wall reinforcement structure according to claim 1, characterized in that, The steel pipe micropiles (210) are arranged in two parallel rows between the river channel (500) and the building (600); the row spacing and the distance between the steel pipe micropiles (210) are equidistant.

3. The retaining wall reinforcement structure according to claim 2, characterized in that, The spacing between the steel pipe micropiles (210) is 300mm-500mm; the row spacing between the steel pipe micropiles (210) is 450mm-850mm.

4. The retaining wall reinforcement structure according to claim 1, characterized in that, The diameter of the steel pipe (220) is 82% of the diameter of the steel pipe micropile (210); the diameter of the steel pipe (220) is 120mm-160mm; the diameter of the steel pipe micropile (210) is 150mm-200mm.

5. The retaining wall reinforcement structure according to claim 1, characterized in that, The length of the steel pipe micropile (210) is 6m-12m.

6. The retaining wall reinforcement structure according to claim 1, characterized in that, The outer surface of the steel pipe (220) is coated with an epoxy coal tar pitch layer for corrosion protection.

7. The retaining wall reinforcement structure according to claim 1, characterized in that, The diameter of the double-pipe jet grouting pile (300) is 500mm-900mm, and the length of the double-pipe jet grouting pile (300) is 7m-10m.

8. The retaining wall reinforcement structure according to claim 7, characterized in that, The cap beam (400) is provided with a steel reinforcement cage (410) for rigid connection with the top of the steel pipe micropile device (200).

9. The retaining wall reinforcement structure according to claim 1, characterized in that, The retaining wall reinforcement structure also includes a drainage pipe (700) that passes through the retaining wall (100).

10. The retaining wall reinforcement structure according to claim 1, characterized in that, The retaining wall reinforcement structure also includes a railing (800) installed at one end of the retaining wall (100) near the river channel (500).

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