Pile foundation structure for soft soil near edge low-lying position
By using a base and high-pressure rotary spray pile structural design in the low-lying area of the side, the problems of large depth and high risk of traditional foundation treatment are solved, the soil stability and hardening are achieved, and the instability of the pile foundation structure is avoided and the instability of the pile foundation structure is avoided. Collapse reduces construction costs and risks.
Patent Information
- Application Number
- CN202420714812.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-04-08
AI Technical Summary
In low-lying areas near the edge, traditional construction methods lead to large depth of foundation treatment, high risk, high cost and difficult to ensure the quality of pile foundation structure. Especially when the soil is soft and the moisture content is large, it is easy to lead to instability and safety hazards of pile foundation structure.
A base and support column structure are adopted. The base is arranged at the upper end of the main bearing pile body to form multiple reinforcement holes. The support column is inserted in the reinforcement hole. The base material is cement soil, and the support column is a high-pressure rotary spray pile. By reinforcement The arrangement of holes and the use of high-pressure rotary spray piles stabilize the soil and stop water and prevent pile holes from collapsing.
Effectively stabilize and harden the soil, prevent the instability and collapse of the pile foundation structure, reduce construction risks and costs, and improve the integrity and safety of the pile foundation.
Smart Images
Figure CN222332748U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pile foundations, and in particular relates to a pile foundation structure used for soft soil in low-lying places adjacent to edges. Background Art
[0002] The foundation is the load-bearing structure of the building and plays a connecting role in the entire building. If the foundation is not handled properly, it will endanger the safety and quality of the entire building.
[0003] In municipal engineering, part of the construction site is located at the low-lying edge of the original landform. At the same time, the area has a large amount of rainfall, which will cause water to accumulate in the soil of the construction site all year round. The soil is soft, has a high water content and high fluidity. If the foundation soil is not handled properly, it will likely cause serious quality problems in the pile foundation. At the very least, it will cause cracks and tilts in the structure, destroying the integrity and stability of the structure. At worst, the foundation will become unstable and cause the building to collapse.
[0004] If the traditional construction method is used for foundation treatment, not only does it require the replacement of very deep backfill soil, but the excavation depth is deep, which leads to high risks in construction work, high construction costs, and long construction period, and the quality of the pile foundation structure formed is difficult to guarantee. Utility Model Content
[0005] In order to solve the defects of the prior art, the purpose of the utility model is to provide a pile foundation structure for soft soil in low-lying areas adjacent to edges.
[0006] In order to achieve the above purpose, a technical solution adopted by the utility model is:
[0007] A pile foundation structure for soft soil in low-lying areas near edges, comprising
[0008] Main bearing pile;
[0009] A base, which is arranged at the upper end of the main bearing pile body and has a plurality of reinforcement holes formed thereon;
[0010] A plurality of support columns are inserted into the reinforcement holes in a one-to-one correspondence.
[0011] Optionally, the material of the base is cement soil.
[0012] Optionally, the base is arranged in an inverted frustum shape.
[0013] Optionally, the support columns are high-pressure jet-jet piles.
[0014] Optionally, the centers of the multiple reinforcement holes are arranged on a circular line with the axis of the main bearing pile body as the center.
[0015] Optionally, the centers of the multiple reinforcement holes are arranged at equal angles with the axis of the main bearing pile body as the center.
[0016] Optionally, the diameter of the circle formed by the centers of the plurality of reinforcement holes is twice the diameter of the main bearing pile body.
[0017] Optionally, there are 12 reinforcement holes, and a circle with the axis of the main bearing pile body as the center is divided into 12 equal parts to form 12 equally divided points, and the reinforcement holes are arranged at the equally divided points one by one.
[0018] Compared with the prior art, the beneficial effects of the utility model are:
[0019] The utility model proposes a pile foundation structure for soft soil in low-lying areas adjacent to edges. By arranging a base at the upper end of a main bearing pile body, a plurality of reinforcement holes are formed on the base, and a plurality of support columns are inserted into the reinforcement holes one by one. The base and the support columns can stabilize the soil around the pile foundation so that the soil is hardened and reinforced, and can also stop water, prevent the pile hole from collapsing, thick sediment at the bottom of the pile, and broken piles in the pile foundation. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0021] Figure 1 It is a cross-sectional view of the pile foundation structure of the utility model used for soft soil in low-lying areas near edges;
[0022] Figure 2 The utility model is a top view of a pile foundation structure for soft soil in low-lying areas adjacent to edges.
[0023] In the figure: 1. Main bearing pile; 2. Base; 3. Support column; 4. Reinforcement hole. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0025] Embodiment 1
[0026] See also Figure 1 and Figure 2 , the utility model provides a technical solution:
[0027] A pile foundation structure for soft soil in low-lying areas near the edge includes a main bearing pile body 1, a base 2 and a plurality of support columns 3. In actual use, the main bearing pile body 1 of this embodiment is vertically fixedly arranged inside the soil, and the base 2 is arranged at the upper end of the main bearing pile body 1, and the upper end surface of the base 2 is flush with the ground. A plurality of reinforcement holes 4 are formed on the base 2 of this embodiment, and a plurality of support columns 3 are inserted into the reinforcement holes 4 in a one-to-one correspondence.
[0028] Furthermore, the material of the base 2 of this embodiment is cement soil, and the base 2 is arranged in an inverted truncated cone shape. Because the soft soil in the low-lying area near the edge has a high water content, it is difficult for the rotary drilling rig to drill a hole, and the pile foundation of this project is deep, up to 20 meters deep. If the foundation is treated according to the traditional construction method, it is necessary to replace the backfill soil with a very deep depth, and the excavation depth is deep, resulting in high risk of construction work, high cost, and long construction period. After the base 2 is reinforced, it is convenient to drill.
[0029] Furthermore, the support column 3 of this embodiment is a high-pressure rotary jet pile, which not only stabilizes the soil around the pile foundation so that the soil is hardened and reinforced, but also stops water, prevents pile hole collapse, thick sediment at the bottom of the pile, and broken piles.
[0030] Further, the centers of the multiple reinforcement holes 4 of this embodiment are arranged on a circumferential line with the axis of the main bearing pile body 1 as the center. The centers of the multiple reinforcement holes 4 are arranged at equal angles with the axis of the main bearing pile body 1 as the center.
[0031] Furthermore, the diameter of the circle formed by the centers of the multiple reinforcement holes 4 in this embodiment is twice the diameter of the main bearing pile body 1 .
[0032] Furthermore, the present embodiment has 12 reinforcement holes, and the circumference of the main bearing pile body 1 is divided into 12 equal points with the axis of the circle as the center, and the reinforcement holes 4 are arranged at the equal points one by one. Of course, it can also be divided into 8 or 16 equal points according to actual needs.
[0033] Then, the specific construction steps of the pile foundation structure of this embodiment are:
[0034] 1. Use a machine to mix the soft soil with high water content within a width of 1 meter and a depth of 3 meters around the pile top with cement and soil, and then mix them evenly to form cement soil. Use a machine to backfill and compact it in layers to the original working surface elevation. The main purpose is to pre-treat the soil in this area in advance because the water content of the surface fill soil is relatively large.
[0035] 2. After the cement soil solidifies and reaches a certain strength, the work site will be leveled. After the site is leveled, the cross-line method will be used to lay out the positions of the large-diameter pile foundations on the treated soil surface.
[0036] 3. Then reinforce the outer contour line of the pile foundation. The contour of the reinforcement line is a concentric circle. Layout it on the working ground. Divide the outer contour reinforcement line of the reinforcement line pile into 12 equal parts with the axis of the main bearing pile body 1 as the center of the circle, and layout 12 equally divided points.
[0037] 4. For pile foundation reinforcement, high-pressure rotary jet piles are used to reinforce the foundation at 12 equal parts of the outer contour. This construction not only stabilizes the soil around the pile foundation, but also hardens and reinforces the soil, and has the effect of water-isolating and solidifying.
[0038] 5. Start drilling the pile hole of the pile foundation, put in the pile mouth casing, and continue the pile foundation construction to form the main bearing pile body 1.
[0039] Compared with the prior art, the beneficial effects of the utility model are:
[0040] The utility model proposes a pile foundation structure for soft soil in low-lying areas adjacent to edges. By setting a base 2 at the upper end of a main bearing pile body 1, a plurality of reinforcement holes 4 are formed on the base 2, and a plurality of support columns 3 are inserted into the reinforcement holes 4 one by one. The base 2 and the support columns 3 can stabilize the soil around the pile foundation so that the soil is hardened and reinforced, and can also stop water, prevent the pile hole from collapsing, thick sediment at the bottom of the pile, and broken piles in the pile foundation.
[0041] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0042] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A pile foundation structure for soft soil in low-lying areas near the edge, characterized in that: include Main bearing pile; A base, the base is arranged at the upper end of the main bearing pile body, and a plurality of reinforcement holes are formed on the base; A plurality of support columns are inserted into the reinforcement holes one by one.
2. The pile foundation structure for soft soil in low-lying areas near the edge as claimed in claim 1, characterized in that: The material of the base is cement soil.
3. The pile foundation structure for soft soil in low-lying areas near the edge as claimed in claim 1, characterized in that: The base is arranged in an inverted truncated cone shape.
4. The pile foundation structure for soft soil in low-lying areas near the edge as claimed in claim 1, characterized in that: The support columns are high-pressure jet-jet piles.
5. The pile foundation structure for soft soil in low-lying areas near the edge as claimed in claim 1, characterized in that: The centers of the plurality of reinforcement holes are arranged on a circumferential line with the axis of the main bearing pile body as the center.
6. The pile foundation structure for soft soil in low-lying areas near the edge as claimed in claim 5, characterized in that: The centers of the plurality of reinforcement holes are arranged at equal angles with the axis of the main bearing pile body as the center.
7. The pile foundation structure for soft soil in low-lying areas near the edge as claimed in claim 5, characterized in that: The diameter of a circle formed by the centers of the plurality of reinforcement holes is twice the diameter of the main bearing pile body.
8. The pile foundation structure for soft soil in low-lying areas near the edge as claimed in claim 5, characterized in that: There are 12 reinforcement holes, and a circle with the axis of the main bearing pile body as the center is divided into 12 equal parts to form 12 equally divided points, and the reinforcement holes are arranged on the equally divided points one by one.