Tubular pile planting foundation structure penetrating boulder and rock stratum
By using pipe pile planting foundation structures and specific rock formations for hole-inducing and rotating devices in lone stones and rock formations for hole-inducing and transfer of piles, combined with the reaction force of concrete and lone stones around the pile, the problem of traditional pile foundation structure being difficult to penetrate in lone stones and rock formations is solved, and the efficient stability and safety improvement of pile foundations are achieved.
Patent Information
- Application Number
- CN202421546381.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-02
AI Technical Summary
Traditional pile foundation structures are difficult to penetrate when encountering lonely stones and rock formations, the pile body is easily damaged, and the load-bearing capacity is insufficient, which increases construction difficulty and safety challenges.
The pipe pile planting foundation structure is adopted, and the hole-enlargement and pile delivery is carried out through a specific rock layer guide drilling device. Combined with the reaction force of concrete and lonely stone around the pile, a composite pile foundation structure is formed to enhance the load-bearing capacity and stability.
Effectively penetrates the lonely stones and rock layers, improves the bearing capacity and stability of the pile foundation, increases safety reserves, simple and easy construction methods, low cost and small environmental impact.
Smart Images
Figure CN222810061U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pile foundations, in particular to a pipe pile planting foundation structure that penetrates boulders and rock formations. Background Art
[0002] At present, in construction, when building foundations encounter complex geological conditions such as boulders and rock formations, traditional pile foundation structures often face many challenges, such as difficulty in penetrating boulders and rock formations, easy damage to the pile body, and insufficient bearing capacity. The existence of these geological obstacles not only increases the difficulty of construction, but also poses challenges to the safety and reliability of the pile foundation. In order to overcome these problems, existing technologies have attempted to enhance the stability of the pile foundation through different methods, such as by increasing the diameter of the pile, changing the material of the pile, or adopting special construction techniques. However, these methods are often costly, complex to construct, and in some cases still difficult to achieve the desired effect. Utility Model Content
[0003] The utility model aims to provide a pipe pile foundation structure penetrating boulders and rock formations to solve the problems raised in the above-mentioned background technology.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A pipe pile foundation structure that penetrates boulders and rock formations, including a pile end cap, a pipe pile, and concrete around the pile. The pile end cap is used to bear the load of the upper structure and transfer it to the pipe pile and the concrete around the pile. The pipe pile is the main part of the pile foundation, and a specific rock formation drilling device is used to expand the hole and deliver the pile to ensure the stability and bearing capacity of the pile foundation. A gap of 10-20 cm is provided around the pile body, and the gap is filled with concrete with a strength grade of C20. The bearing capacity F of the pile end cap is composed of three main force sources. The first part of the bearing capacity F1 comes from the direct bearing capacity of the pipe pile head on the pile end, which is the supporting force generated by the direct contact surface between the pile body and the pile end cap; the second part of the bearing capacity F2 is provided by the lateral friction resistance between the concrete around the pile and the pipe pile body, and this force comes from the close contact and interaction between the concrete and the pile body; the third part of the bearing capacity F3 is composed of the reaction force generated by the isolated rock that is closely combined with the pile foundation structure. The isolated rock provides additional supporting force for the entire pile foundation structure with its own stability and geological characteristics; that is, the bearing capacity F of the pile end cap = F1+F2+F3.
[0006] Specifically, the concrete around the pile and the pipe pile form a tightly combined composite pile foundation structure, which provides lateral friction resistance for the pile foundation and enhances the bearing capacity and stability of the pile foundation.
[0007] Furthermore, the thickness of the concrete layer around the pile body is optimized according to different geological conditions and bearing requirements to ensure coordinated work with the pipe piles.
[0008] Specifically, the specific rock formation drilling and rotary drilling device can quickly expand the hole, send piles, and penetrate boulders and rock formations.
[0009] Furthermore, the isolated rock and the composite pile foundation structure form a whole, which provides additional bearing capacity and increases the safety reserve.
[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the pipe pile structure uses a specific rock formation hole-guiding rotary drilling device to expand the hole and deliver the pile, effectively solving the problem that the pipe pile is difficult to penetrate the isolated rocks and rock formations. At the same time, the gaps around the pile body are filled with C20 concrete, which enhances the density and strength of the soil around the pile, and improves the bearing capacity and stability of the pile foundation. In addition, the isolated rocks and the composite pile foundation structure form a whole, providing additional reaction force for the pile foundation, further increasing the safety reserve. This pile foundation structure construction method is simple and easy, low-cost, and has little impact on the environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the pile foundation structure of the utility model;
[0012] In the figure: 1-pile end cap, 2-pipe pile, 3-concrete around pile, 4-rock surface, 5-isolated rock. DETAILED DESCRIPTION
[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0014] like Figure 1As shown, a pipe pile foundation structure that penetrates boulders and rock formations includes a pile end cap 1, a pipe pile 2, and concrete around the pile 3, wherein the pile end cap is used to bear the load of the superstructure and transfer it to the pipe pile and the concrete around the pile; the pipe pile is the main part of the pile foundation, and a specific rock formation drilling device is used to expand the hole and send the pile to ensure the stability and bearing capacity of the pile foundation. A gap of 10-20 cm is set around the pile body, and the gap is filled with concrete with a strength grade of C20. The bearing capacity F of the pile end cap is composed of three main force sources. The first part of the bearing capacity F1 comes from the direct bearing capacity of the pipe pile head on the pile end, which is the supporting force generated by the direct contact surface between the pile body and the pile end cap; the second part of the bearing capacity F2 is provided by the lateral friction resistance between the concrete around the pile and the pipe pile body. This force comes from the close contact and interaction between the concrete and the pile body. The third part of the bearing capacity F3 is composed of the reaction force generated by the isolated rock that is closely combined with the pile foundation structure. The isolated rock provides additional supporting force for the entire pile foundation structure with its own stability and geological characteristics; that is, the bearing capacity F of the pile end cap = F1+F2+F3.
[0015] Specifically, the concrete around the pile and the pipe pile form a tightly combined composite pile foundation structure, which provides lateral friction resistance for the pile foundation and enhances the bearing capacity and stability of the pile foundation.
[0016] Furthermore, the thickness of the concrete layer around the pile body is optimized according to different geological conditions and bearing requirements to ensure coordinated work with the pipe piles.
[0017] Specifically, the specific rock formation drilling and rotary drilling device can quickly expand the hole, send piles, and penetrate the isolated rocks 5 and the rock formation 4.
[0018] Furthermore, the isolated rock and the composite pile foundation structure form a whole, which provides additional bearing capacity and increases the safety reserve.
[0019] The construction method of the pipe pile foundation structure penetrating boulders and rock formations comprises the following steps:
[0020] (1) Geological exploration: Conduct micro-motion array detection on the foundation, obtain micro-motion signals, evaluate and screen the signals, and form a micro-motion detection result map. By analyzing the micro-motion detection result map, the distribution range of isolated rock groups and rock layers within the interval is determined using judgment criteria; then, based on the exploration results, the size, quantity and layout of the pipe piles, as well as the structure of the pile end cap, are designed.
[0021] (2) Pile position positioning: Accurately mark the pile position at the construction site according to the design drawings.
[0022] (3) Pipe pile drilling: Use a drilling rotary drilling device to drill holes at the predetermined pile location, penetrate boulders and rock formations, and form the initial hole for the pipe pile.
[0023] (4) Pipe pile delivery: After the drilling is completed, the prefabricated pipe pile is fixed in the positioning groove of the drilling device for the specific rock formation, so that the pipe pile remains vertical to the drill hole and is accurately implanted into the drill hole until the designed depth is reached.
[0024] (5) Concrete filling around piles: Create a 10-20 cm gap around the pile and fill it with C20 concrete. Make sure the concrete fully fills the gap and bonds well with the pile to provide side friction.
[0025] (6) Construction of pile end cap: construct the pile end cap on the top of the pipe pile to ensure that it is firmly connected to the pipe pile.
[0026] (7) Integration of boulders and pile foundation structure: For boulders that form an integral part of the pile foundation structure, necessary treatments such as grinding or reinforcement are performed to ensure their stability with the pile foundation structure.
[0027] (8) Quality inspection: Quality inspection is carried out during and after the construction process, including the verticality of the pile body and the strength of the concrete.
[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A pipe pile foundation structure penetrating boulders and rock formations, comprising a pile end cap (1), a pipe pile (2) and concrete around the pile (3), characterized in that: The pipe pile (2) uses a specific rock formation drilling and drilling device to expand the hole and deliver the pile. A gap of 10-20 cm is provided around the pile body. The gap is filled with concrete (3) with a strength grade of C20. The bearing capacity F of the pile end cap is composed of three main force sources. The first part of the bearing capacity F1 comes from the direct bearing capacity of the pipe pile head on the pile end. The second part of the bearing capacity F2 is provided by the lateral friction resistance between the concrete around the pile and the pipe pile body. The third part of the bearing capacity F3 is composed of the reaction force generated by the isolated stone (5) tightly combined with the pile foundation structure, that is, the bearing capacity F of the pile end cap (1) = F1+F2+F3.
2. The pipe pile foundation structure for penetrating boulders and rock formations according to claim 1 is characterized in that: The pile perimeter concrete (3) and the pipe pile (2) form a tightly combined composite pile foundation structure.
3. The pipe pile foundation structure for penetrating boulders and rock formations according to claim 1, characterized in that: The specific rock formation drilling and rotary drilling device can quickly expand the hole, deliver the pile, and penetrate the isolated rock (5) and the rock formation (4).
4. The pipe pile foundation structure for penetrating boulders and rock formations according to claim 2, characterized in that: The solitary stone (5) and the composite pile foundation structure form an integral whole.