Cement mixing pile for avoiding subgrade settlement
By introducing a buffer layer and steel mesh into the cement mixing piles, and using transverse and longitudinal cement pile connections, the problem of poor independence of cement mixing piles is solved, achieving uniform load distribution and overall improvement of the roadbed, and avoiding settlement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN CITY CONSTR ENG CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-29
AI Technical Summary
The existing cement mixing piles have poor independence from each other under the roadbed, resulting in uneven load and easy local settlement.
The system employs a first and second buffer layer, combined with the staggered distribution of steel mesh and cement mixing piles, and connects them through transverse and longitudinal cement piles to enhance the integrity and uniformity among the cement mixing piles.
Effectively prevents roadbed settlement, ensures uniform load distribution, improves the overall integrity of the roadbed, and reduces the risk of local settlement.
Smart Images
Figure CN224299951U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of roadbed construction technology, specifically relating to a cement mixing pile that avoids roadbed settlement. Background Technology
[0002] Cement mixing piles are an effective form of soft soil foundation treatment. They use cement as the main curing agent, and a mixing pile machine sprays cement into the soil and mixes it thoroughly, causing a series of physicochemical reactions between the cement and the soil, which hardens the soft soil and increases the foundation strength. Cement mixing piles are classified into single-axis, double-axis, and triple-axis mixing piles according to the main construction methods used. For example, patent application number 202121724278.5 discloses a cement mixing pile to avoid settlement between new and old roadbeds. It achieves support for the new and old roadbeds by setting cement mixing piles evenly distributed at the intervals between the new and old road surfaces, thereby avoiding roadbed settlement.
[0003] In the above design, the cement mixing piles are evenly and intermittently distributed, so the independent connection between each cement mixing pile is poor. The load borne by each cement mixing pile under the roadbed is likely to vary greatly, and the roadbed may still experience local settlement. Utility Model Content
[0004] The purpose of this invention is to provide a cement mixing pile that avoids roadbed settlement in order to solve the above problems. It has the advantages of tighter connection and more uniform load distribution, as detailed below.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] This utility model provides a cement mixing pile for preventing roadbed settlement, including a roadbed and a pile structure;
[0007] The lower end of the roadbed is provided with a first buffer layer, the middle part of the first buffer layer is provided with a first steel mesh, the lower end of the first buffer layer is provided with a second buffer layer, and the middle part of the second buffer layer is provided with a second steel mesh.
[0008] The pile structure is located below the second buffer layer. The pile structure includes a first cement mixing pile and a second cement mixing pile. The first cement mixing pile is distributed in a rectangular array below the second buffer layer, and the second cement mixing pile is also distributed in a rectangular array below the second buffer layer.
[0009] Preferably, the first buffer layer is made of crushed stone blocks, and the second buffer layer is made of fine sand compacted and laid, so as to buffer the roadbed and fill the gaps between the crushed stone blocks.
[0010] Preferably, the first steel mesh is formed by tying together first transverse steel bars and first longitudinal steel bars. The first transverse steel bars are distributed at equal intervals from front to back, and the first longitudinal steel bars are distributed at equal intervals from left to right, thereby improving the integrity of the first buffer layer.
[0011] Preferably, the second steel mesh is made of second transverse steel bars and second longitudinal steel bars tied together. The second transverse steel bars are distributed at equal intervals from front to back, and the second longitudinal steel bars are distributed at equal intervals from left to right, thereby improving the integrity of the second buffer layer.
[0012] Preferably, the first transverse reinforcement and the second transverse reinforcement are staggered in the longitudinal direction, and the first longitudinal reinforcement and the second longitudinal reinforcement are staggered in the transverse direction to ensure the laying density of the transverse reinforcement under the roadbed.
[0013] Preferably, the first cement mixing pile and the second cement mixing pile are staggered in the transverse direction and staggered in the longitudinal direction to ensure the laying method between the first cement mixing pile and the second cement mixing pile.
[0014] Preferably, a transverse cement pile is provided between two adjacent first cement mixing piles in the same row, and the two adjacent first cement mixing piles in the same row are connected by the transverse cement pile to ensure the integrity of the first cement mixing piles in the same row.
[0015] Preferably, a longitudinal cement pile is provided between two adjacent second cement mixing piles in the same column, and the two adjacent second cement mixing piles in the same column are connected by the longitudinal cement pile to ensure the integrity of the second cement mixing piles in the same column.
[0016] Preferably, the front end of the longitudinal cement pile intersects with the frontmost column of transverse cement piles.
[0017] Preferably, the rear end of the longitudinal cement pile intersects with the last column of transverse cement piles to ensure the connection between the longitudinal cement piles and the transverse cement piles.
[0018] The beneficial effects are:
[0019] The presence of transverse and longitudinal cement piles allows for overlapping between cement mixing piles under the roadbed, ensuring a tight connection between them and improving the overall integrity of the cement mixing piles. This facilitates the distribution of the load borne by the roadbed across each cement mixing pile, preventing significant differences in load between piles and effectively avoiding localized settlement due to uneven loading of the cement mixing piles under the roadbed. This makes it easier to promote and use. 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 front view structural diagram of the present invention;
[0022] Figure 2 This is a utility model Figure 1 A schematic diagram of the three-dimensional structure;
[0023] Figure 3 This is a utility model Figure 1 A schematic diagram of the three-dimensional structure of the middle 4;
[0024] Figure 4 This is a utility model Figure 1 A schematic diagram of the structure from below in the middle 4.
[0025] The annotations in the attached figures are explained as follows:
[0026] 1. Roadbed; 2. First buffer layer; 3. Second buffer layer; 4. Pile structure; 41. First cement mixing pile; 42. Second cement mixing pile; 43. Transverse cement pile; 44. Longitudinal cement pile; 5. First steel mesh; 6. Second steel mesh. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0028] See Figures 1-4As shown, this utility model provides a cement mixing pile for preventing roadbed settlement, including a roadbed 1 and a pile structure 4; a first buffer layer 2 is provided at the lower end of the roadbed 1, which is paved with crushed stone blocks, and a first steel mesh 5 is provided in the middle of the first buffer layer 2; a second buffer layer 3 is provided at the lower end of the first buffer layer 2, which is paved with fine sand and compacted to buffer the roadbed 1 and fill the gaps between the crushed stone blocks; a second steel mesh 6 is provided in the middle of the second buffer layer 3, and the first steel mesh 5 is composed of a first transverse steel bar and a first longitudinal steel bar. The first buffer layer 2 is formed by tying together the first transverse steel bars, which are distributed at equal intervals from front to back, and the first longitudinal steel bars are distributed at equal intervals from left to right, thus improving the integrity of the first buffer layer 2. The second steel mesh 6 is formed by tying together the second transverse steel bars and the second longitudinal steel bars, which are distributed at equal intervals from front to back and the second longitudinal steel bars are distributed at equal intervals from left to right, thus improving the integrity of the second buffer layer 3. The first transverse steel bars and the second transverse steel bars are staggered in the longitudinal direction, and the first longitudinal steel bars and the second longitudinal steel bars are staggered in the transverse direction, thus ensuring the laying density of the transverse steel bars under the roadbed.
[0029] The pile structure 4 is located below the second buffer layer 3. The pile structure 4 includes first cement mixing piles 41 and second cement mixing piles 42. The first cement mixing piles 41 are arranged in a rectangular array below the second buffer layer 3, and the second cement mixing piles 42 are also arranged in a rectangular array below the second buffer layer 3. The first cement mixing piles 41 and the second cement mixing piles 42 are staggered in the transverse and longitudinal directions to ensure the laying pattern between the first cement mixing piles 41 and the second cement mixing piles 42. A transverse cement pile 43 is set between two adjacent first cement mixing piles 41 in the same row. Two adjacent first cement mixing piles 41 in the same row are connected by transverse cement piles 43 to ensure the integrity of the first cement mixing piles 41 in the same row. A longitudinal cement pile 44 is set between two adjacent second cement mixing piles 42 in the same column. Two adjacent second cement mixing piles 42 in the same column are connected by longitudinal cement piles 44 to ensure the integrity of the second cement mixing piles 42 in the same column. The front end of the longitudinal cement pile 44 intersects with the transverse cement pile 43 of the first column, and the rear end of the longitudinal cement pile 44 intersects with the transverse cement pile 43 of the last column to ensure the connection between the longitudinal cement pile 44 and the transverse cement pile 43.
[0030] In one embodiment of this utility model, the cement mixing pile with the above-mentioned structure for avoiding roadbed settlement provides buffer for the roadbed through the first buffer layer 2 and the second buffer layer 3. Through the first steel mesh 5 and the second steel mesh 6, the load on the roadbed can be initially dispersed while ensuring the strength of the first buffer layer 2 and the second buffer layer 3.
[0031] The first cement mixing piles 41 in the same row can be connected by the transverse cement piles 43, and the second cement mixing piles 42 in the same row can be connected by the longitudinal cement piles 44. The connection between the first cement mixing piles 41 and the second cement mixing piles 42 can be indirectly achieved by the connection between the transverse cement piles 43 and the longitudinal cement piles 44. This makes the connection between the first cement mixing piles 41 and the second cement mixing piles 42 stronger, and allows each cement mixing pile to distribute the load on the roadbed more evenly under the roadbed, reducing the load difference between each cement mixing pile.
[0032] It is worth noting that the depth of the horizontal cement piles 43 and the vertical cement piles 44 should be controlled between 0.5 and 1m to avoid excessive depth which would significantly increase construction costs.
[0033] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A cement mixing pile for preventing roadbed settlement, characterized in that: Includes roadbed (1) and pile structure (4); The roadbed (1) is provided with a first buffer layer (2) at the lower end, a first steel mesh (5) is provided in the middle of the first buffer layer (2), a second buffer layer (3) is provided at the lower end of the first buffer layer (2), and a second steel mesh (6) is provided in the middle of the second buffer layer (3). The pile structure (4) is located below the second buffer layer (3). The pile structure (4) includes a first cement mixing pile (41) and a second cement mixing pile (42). The first cement mixing pile (41) is distributed in a rectangular array below the second buffer layer (3), and the second cement mixing pile (42) is distributed in a rectangular array below the second buffer layer (3).
2. The cement mixing pile for avoiding roadbed settlement according to claim 1, characterized in that: The first buffer layer (2) is made of crushed stone blocks, and the second buffer layer (3) is made of fine sand compacted and laid.
3. The cement mixing pile for avoiding roadbed settlement according to claim 1, characterized in that: The first steel mesh (5) is formed by tying together the first transverse steel bars and the first longitudinal steel bars. The first transverse steel bars are distributed at equal distances from front to back, and the first longitudinal steel bars are distributed at equal distances from left to right.
4. The cement mixing pile for avoiding roadbed settlement according to claim 3, characterized in that: The second steel mesh (6) is formed by tying the second transverse steel bars and the second longitudinal steel bars together. The second transverse steel bars are distributed at equal intervals from front to back, and the second longitudinal steel bars are distributed at equal intervals from left to right.
5. A cement mixing pile for avoiding roadbed settlement according to claim 4, characterized in that: The first transverse reinforcement and the second transverse reinforcement are staggered in the longitudinal direction, and the first longitudinal reinforcement and the second longitudinal reinforcement are staggered in the transverse direction.
6. The cement mixing pile for avoiding roadbed settlement according to claim 1, characterized in that: The first cement mixing pile (41) and the second cement mixing pile (42) are staggered in the transverse direction and staggered in the longitudinal direction.
7. A cement mixing pile for avoiding roadbed settlement according to claim 6, characterized in that: A transverse cement pile (43) is provided between two adjacent first cement mixing piles (41) in the same row, and the two adjacent first cement mixing piles (41) in the same row are connected by the transverse cement pile (43).
8. A cement mixing pile for avoiding roadbed settlement according to claim 7, characterized in that: A longitudinal cement pile (44) is provided between two adjacent second cement mixing piles (42) in the same column, and the two adjacent second cement mixing piles (42) in the same column are connected by the longitudinal cement pile (44).
9. A cement mixing pile for avoiding roadbed settlement according to claim 8, characterized in that: The front end of the longitudinal cement pile (44) intersects with the frontmost transverse cement pile (43).
10. A cement mixing pile for avoiding roadbed settlement according to claim 8, characterized in that: The rear end of the longitudinal cement pile (44) intersects with the last column of transverse cement piles (43).