Retaining wall maintaining and reinforcing structure
By installing steel sheet piles, reinforced concrete capping, and high-pressure jet grouting piles under the seawall retaining wall, combined with compaction grouting, the problems of complex and costly seawall maintenance and reinforcement construction have been solved, and the safe and stable operation of the seawall has been achieved.
Patent Information
- Application Number
- CN202422889976.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing methods for repairing and reinforcing seawalls are complex, costly, and ineffective, failing to significantly improve the seawall's erosion resistance, soil stability, and foundation bearing capacity.
Engineering measures such as first pile body (e.g., steel sheet pile), capping (e.g., reinforced concrete capping), and second pile body (e.g., high-pressure jet grouting pile) are adopted to reinforce the soil under the retaining wall. Combined with compaction layer (e.g., compaction grouting treatment) to improve the soil density and strength, and enhance the bearing capacity and stability of the foundation.
It has achieved simple, fast, and low-cost reinforcement of seawalls, effectively preventing soil erosion and damage caused by ocean waves and tides, and improving the safety and stability of seawalls.
Smart Images
Figure CN223481746U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seawall construction technology, and further to a retaining wall repair and reinforcement structure. Background Technology
[0002] Seawalls are crucial infrastructure for mitigating marine disasters and protecting the lives and property of people in coastal areas, as well as supporting economic development. Over time and with continuous changes in the marine environment, seawalls suffer varying degrees of damage, such as cracks, collapses, and erosion. Seawalls are constantly impacted by waves and tides, making them prone to scouring at the toe and surface erosion. Methods such as riprap reinforcement and concrete facing can increase the surface roughness and weight of the seawall, reducing the scouring effect of the water flow. The stability of the seawall depends on the strength and internal structure of the soil. One purpose of maintenance and reinforcement is to enhance soil stability and prevent landslides and collapses. The seawall's wave-resistant capacity can be improved by adding wave walls and planting vegetation. The stability of the seawall is also closely related to the bearing capacity of the foundation. Uneven settlement or insufficient bearing capacity of the foundation can lead to cracks and tilting in the seawall. In summary, the principle of seawall repair and reinforcement is to comprehensively consider factors such as the seawall's erosion resistance, soil stability, wave protection capacity, and foundation bearing capacity, and to adopt corresponding technical measures to improve the seawall's safety and durability. Current seawall repair and reinforcement methods suffer from problems such as complex construction, high costs, and unsatisfactory results. Utility Model Content
[0003] To address the aforementioned technical problems, the purpose of this utility model is to provide a retaining wall repair and reinforcement structure for repairing and reinforcing seawall retaining walls. This structure reinforces the soil beneath the retaining wall through engineering measures such as first piles, second piles, and capping, increasing the soil density and strength, improving the bearing capacity and stability of the foundation, and fundamentally preventing the scouring and erosion of the foundation soil caused by the continuous impact of waves, tides, and other water flows. This is of great significance for ensuring the safe and stable operation of seawalls.
[0004] To achieve the above objectives, this utility model provides a retaining wall repair and reinforcement structure, including a first pile body, a capping cap, and a second pile body. The first pile body is disposed in front of the retaining wall teeth, the capping cap is disposed above the first pile body, and the second pile body is disposed behind the retaining wall.
[0005] In some embodiments, the first pile is a sheet pile with a top elevation of 1.6m and a length of 6m.
[0006] In some embodiments, a replacement slope is provided on the side of the sheet pile away from the retaining wall, which can fill and restore the slope protection structure that was removed in front of the retaining wall.
[0007] In some embodiments, the capping is a reinforced concrete capping with a thickness of 300 mm, a width of 1.25 m, and a top elevation of 2.20 m.
[0008] In some embodiments, the second pile is a high-pressure jet grouting pile, the high-pressure jet grouting pile having a pile length of 10m and a pile bottom elevation of -6.00m.
[0009] In some embodiments, a compaction layer is also included, which is disposed below the base plate of the retaining wall and located between the first pile and the second pile.
[0010] In some embodiments, the compacted layer is treated with compaction grouting.
[0011] In some embodiments, the retaining wall includes a baffle and a base plate, the baffle being disposed above the base plate, the first pile being disposed at one end of the base plate, the capping being disposed above the base plate and located opposite the baffle on the side closer to the first pile, and the second pile being disposed at the other end of the base plate.
[0012] Compared with the prior art, the retaining wall repair and reinforcement structure provided by this utility model has at least one of the following beneficial effects:
[0013] 1. The retaining wall repair and reinforcement structure is used to repair and reinforce the retaining wall of the seawall. Through engineering measures such as first pile, second pile and capping, the soil under the retaining wall is reinforced, the soil density and strength are increased, the bearing capacity and stability of the foundation are improved, and the scouring and erosion of the foundation soil caused by the continuous impact of waves, tides and other water flows are fundamentally prevented. It is of great significance to ensure the safe and stable operation of the seawall.
[0014] 2. A row of closed first piles is set in front of the retaining wall teeth. The first piles are made of steel sheet piles, which can effectively prevent the soil under the retaining wall base from being washed away by the rise and fall of tides, and avoid the "grouting" of the foundation soil and the erosion and scouring of the embankment settlement.
[0015] 3. A capping is installed on the sheet piles. The capping is made of reinforced concrete, which can connect the individual sheet piles into a whole, effectively restrict the horizontal displacement of the top of the sheet piles, prevent groundwater and surface water from seeping into the interior of the sheet piles, and improve the overall safety and waterproofness of the structure.
[0016] 4. A row of enclosed second piles is installed behind the retaining wall, close to the base slab. The second piles are high-pressure jet grouting piles, which, together with the steel sheet piles in front of the retaining wall, form a solid curtain to enhance the stability of the structure.
[0017] 5. A compaction layer is also provided below the base plate of the retaining wall. The compaction layer is treated with compaction grouting, which can utilize the filling and solidification properties of the grouting material to compact the soil layer, form a stable solid body in the soil layer, increase the density and strength of the soil layer, and thus improve the bearing capacity and stability of the foundation. Attached Figure Description
[0018] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.
[0019] Figure 1 This is an overall diagram of a retaining wall repair and reinforcement structure;
[0020] Figure 2 This is a detailed diagram of a retaining wall repair and reinforcement structure.
[0021] Explanation of icon numbers:
[0022] 1. Retaining wall, 11. Baffle plate, 12. First pile body, 21. Replacement slope body, 3. Coping, 4. Second pile body, 5. Compacted layer, 6. Slope protection structure. Detailed Implementation
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.
[0024] To keep the drawings concise, each figure only schematically shows the parts relevant to the utility model, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."
[0025] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
[0028] refer to Figure 1 This utility model provides a maintenance and reinforcement structure for a retaining wall 1, including a first pile body 2, a capping 3, and a second pile body 4. The first pile body 2 is located in front of the wall teeth of the retaining wall 1, the capping 3 is located above the first pile body 2, and the second pile body 4 is located behind the retaining wall 1.
[0029] In this embodiment, the retaining wall 1 repair and reinforcement structure is used to repair and reinforce the retaining wall 1 of the seawall. Through engineering measures such as the first pile 2, the second pile 4 and the capping 3, the soil under the retaining wall 1 is reinforced, the density and strength of the soil layer are increased, the bearing capacity and stability of the foundation are improved, and the scouring and erosion of the foundation soil caused by the continuous impact of waves, tides and other water flows are fundamentally prevented. This is of great significance to ensuring the safe and stable operation of the seawall.
[0030] Specifically, refer to Figure 2The first pile body 2 is a steel sheet pile. A row of closed steel sheet piles is set in front of the retaining wall 1, which can effectively prevent the soil under the bottom plate 12 of the retaining wall 1 from being eroded by the rise and fall of tides, and avoid the "grouting" of the foundation soil and the erosion and settlement of the embankment. The steel sheet piles specifically include, but are not limited to, Larssen IV steel sheet piles. Other pile engineering measures are also within the scope of protection of this application. This application only takes Larssen IV steel sheet piles as an example. The top elevation of the steel sheet pile is 1.6m and the pile length is 6m. When installing steel sheet piles, it is necessary to remove part of the slope protection structure 6 in front of the retaining wall 1. Therefore, a replacement slope 21 is also provided on the side of the steel sheet pile away from the retaining wall 1. The replacement slope 21 can fill and restore the slope protection structure 6 that was removed in front of the retaining wall 1. The replacement slope 21 specifically includes, but is not limited to, C30 plain concrete. Other slope protection engineering measures are also within the scope of protection of this application. This application only takes C30 plain concrete as an example. After replacing the slope body 21 and repairing the demolished slope protection structure 6, the remaining slope protection structure 6 is retained. Generally, the slope protection structure 6 is made of dry-laid rubble masonry.
[0031] The capping 3 is a reinforced concrete capping. The reinforced concrete capping on the sheet piles connects them into a whole, effectively limiting the horizontal displacement of the top of the sheet piles, preventing groundwater and surface water from seeping into the sheet piles, and improving the overall safety and waterproofing of the structure. The reinforced concrete capping is also at least partially installed on the base slab 12 of the retaining wall 1. The reinforced concrete capping specifically includes, but is not limited to, a C30 reinforced concrete capping; other capping engineering measures are also within the scope of protection of this application. This application only uses a C30 reinforced concrete capping as an example, with a thickness of 300mm, a width of 1.25m, and a top elevation of 2.20m.
[0032] The second pile 4 is a high-pressure jet grouting pile. A row of closed high-pressure jet grouting piles is installed behind the retaining wall 1, close to the base slab 12, forming a solid curtain with the sheet piles in front of the retaining wall 1, enhancing the stability of the structure. High-pressure jet grouting piles specifically include, but are not limited to, biaxial high-pressure jet grouting piles; other pile engineering measures are also within the scope of protection of this application. This application only uses high-pressure jet grouting piles as an example; the pile length is 10m, and the pile bottom elevation is -6.00m.
[0033] During maintenance and reinforcement, at low tide, a 1m wide section of the slope protection structure 6 was removed in front of the retaining wall 1's tooth, and a row of closed steel sheet piles was installed. A C30 reinforced concrete capping was then placed on top of the sheet piles, with an early-strength agent added to the capping. The slope in front of the sheet piles was then restored by filling with C30 plain concrete. A row of closed high-pressure jet grouting piles was installed behind retaining wall 1, immediately adjacent to the base slab 12. The entire maintenance and reinforcement process was simple, quick, low-cost, and yielded significant results.
[0034] Furthermore, it also includes a compaction layer 5, which is disposed below the base plate 12 of the retaining wall 1 and between the first pile 2 and the second pile 4. In this embodiment, a compaction layer 5 is also provided below the base plate 12 of the retaining wall 1. The compaction layer 5 can compact the soil layer, form a stable solid body in the soil layer, increase the density and strength of the soil layer, thereby improving the bearing capacity and stability of the foundation.
[0035] Specifically, to prevent the soil beneath the base slab 12 of the retaining wall 1 from being eroded by seepage, the soil beneath the base slab 12 is compacted to form a compacted layer 5. The compacted layer 5 is treated with compaction grouting, which utilizes the filling and solidification properties of the grouting material to form a stable consolidated body within the soil layer, increasing the soil density and strength, thereby improving the bearing capacity and stability of the foundation. The grouting holes are φ15cm, spaced 1.2m apart, and arranged in a quincunx pattern. It is worth noting that the formation of the compacted layer 5 includes, but is not limited to, compaction grouting; other compaction engineering measures are also within the scope of protection of this application. This application only uses compaction grouting as an example.
[0036] Furthermore, the retaining wall 1 includes a baffle plate 11 and a base plate 12. The baffle plate 11 is disposed above the base plate 12. The first pile 2 is disposed at one end of the base plate 12. The capping 3 is disposed above the base plate 12 and is located opposite the baffle plate 11 on the side closer to the first pile 2. The second pile 4 is disposed at the other end of the base plate 12. It is worth noting that the first pile 2 must be tightly fitted to one end of the base plate 12 and also tightly fitted to one end of the compacted layer 5. Similarly, the second pile 4 must be tightly fitted to the other end of the base plate 12 and also tightly fitted to the other end of the compacted layer 5 to increase the overall stability and strength of the structure. The retaining wall 1 is the structure that needs to be reinforced in this application. The specific form of the retaining wall 1 is not further limited in this application. Other forms of retaining walls 1 are also within the protection scope of this application. This embodiment is only for illustrative purposes. At the same time, the slope protection structure 6 set in front of the retaining wall 1 has the same structure as the retaining wall 1, and is not further limited in this application.
[0037] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A retaining wall repair and reinforcement structure, characterized in that, It includes a first pile, a capping pile, and a second pile. The first pile is located in front of the retaining wall teeth, the capping pile is located above the first pile, and the second pile is located behind the retaining wall.
2. The retaining wall repair and reinforcement structure according to claim 1, characterized in that, The first pile is a steel sheet pile, with a top elevation of 1.6m and a length of 6m.
3. The retaining wall repair and reinforcement structure according to claim 2, characterized in that, The sheet pile is also provided with a replacement slope on the side away from the retaining wall, which can fill and restore the slope protection structure that was demolished in front of the retaining wall.
4. The retaining wall repair and reinforcement structure according to claim 1, characterized in that, The capping is a reinforced concrete capping with a thickness of 300mm, a width of 1.25m, and a top elevation of 2.20m.
5. The retaining wall repair and reinforcement structure according to claim 1, characterized in that, The second pile is a high-pressure jet grouting pile, which has a length of 10m and a bottom elevation of -6.00m.
6. A retaining wall repair and reinforcement structure according to any one of claims 1-5, characterized in that, It also includes a compacted layer, which is disposed below the bottom plate of the retaining wall and located between the first pile and the second pile.
7. A retaining wall repair and reinforcement structure according to claim 6, characterized in that, The compacted layer is treated with compaction grouting.
8. The retaining wall repair and reinforcement structure according to claim 1, characterized in that, The retaining wall includes a baffle and a base plate. The baffle is disposed above the base plate. The first pile is disposed at one end of the base plate. The capping is disposed above the base plate and is located on the side of the baffle closer to the first pile. The second pile is disposed at the other end of the base plate.