Green building pile foundation sinking prevention device
Patent Information
- Application Number
- CN202522674978.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-17
AI Technical Summary
[0002]桩基作为建筑结构的关键承载与传力构件，其长期稳定性直接关系到上部结构的安全，在软土、回填土或地下水位较高的地区，桩基常面临不均匀沉降、侧向位移，以及地下水浮力引起的上拔风险，传统桩基结构在应对这些复杂工况时，往往存在局部应力集中、依赖大体积混凝土或大量钢材等问题，不仅材料消耗大，且与绿色建造原则相悖；
1.通过抗浮锚杆与深层稳定土层的锚固、支撑盘与锯齿板对荷载的扩散作用以及承载板与钉土锥在浅层的锚固，多级协同提高桩基组件的抗沉降、抗上浮、抗侧移能力。
Smart Images
Figure CN224918502U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-settlement technology for building pile foundations, and in particular to a green building pile foundation anti-settlement device. Background Technology
[0002] As a key load-bearing and force-transmitting component of building structures, the long-term stability of pile foundations is directly related to the safety of the superstructure. In areas with soft soil, backfill soil, or high groundwater levels, pile foundations often face uneven settlement, lateral displacement, and the risk of uplift caused by groundwater buoyancy. When dealing with these complex working conditions, traditional pile foundation structures often have problems such as local stress concentration, reliance on large-volume concrete or a large amount of steel, which not only consumes a lot of materials but also goes against the principles of green building. In the existing technology, in order to improve the settlement resistance and buoyancy resistance of pile foundations, methods such as increasing the pile diameter, increasing the pile length, or setting anti-buoyancy anchors are usually adopted. However, simply increasing the size of the pile body leads to material waste and reduced economy. The traditional connection between the pile top and the pile cap (or foundation slab) has limited ability to adjust differential settlement, and stress concentration is easily formed in the pile top area, which becomes a weak link. Therefore, there is an urgent need to develop a new type of pile foundation anti-settlement device to systematically improve the overall stability and deformation resistance of pile foundations, and promote the development of building foundation engineering towards resource conservation while ensuring project safety. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a green building pile foundation anti-settlement device.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A green building pile foundation anti-sinking device includes an anti-sinking mechanism for supporting pile foundation components installed inside the soil layer. The anti-sinking mechanism includes a bearing plate, a support plate, and a flange. The bearing plate is fixed to the top of the soil layer by casting. After the bearing plate is cast, the connection between it and the pile foundation component solidifies. The flange is integrally formed on the outer circumference of the precast composite pile. The support plate and the flange are fixed together by fasteners.
[0005] As a further improvement of this utility model: the bottom of the bearing plate is integrally formed with a soil nailing cone, which is inserted into the soil layer.
[0006] As a further improvement of this utility model: the bottom of the support plate is integrally formed with a serrated plate, which is supported on the top of the bearing plate.
[0007] As a further embodiment of this utility model: the pile foundation component includes a precast composite pile, reinforcing steel bars and a cement base layer. The precast composite pile is installed inside the soil layer, and the cement base layer is set in the grouting hole inside the precast composite pile by casting. The reinforcing steel bars are set in the cement base layer.
[0008] As a further improvement of this utility model, the precast composite pile has an outer FRP mesh skeleton, and the interior is filled with construction waste bricks, crushed concrete recycled aggregate and plant fiber.
[0009] As a further improvement of this utility model, the support plate is a disc-shaped structure with a base of ceramsite concrete and a surface coated with a polylactic acid (PLA)-based biodegradable coating.
[0010] As a further embodiment of this utility model: the fixing component includes a locking nut and a locking bolt, the locking nut and the locking bolt are threaded together, and the locking nut and the locking bolt are used in conjunction with the fixing hole.
[0011] As a further improvement of this utility model, an anti-buoyancy anchor rod is embedded inside the soil layer.
[0012] Compared with the prior art, this utility model provides a green building pile foundation anti-settlement device, which has the following beneficial effects: 1. By anchoring the anti-buoyancy anchor rod to the deep stable soil layer, the load diffusion effect of the support plate and the sawtooth plate, and the anchoring of the bearing plate and the soil nail cone in the shallow layer, the anti-settlement, anti-buoyancy, and anti-lateral displacement capabilities of the pile foundation components are improved through multi-level synergy.
[0013] 2. The precast composite pile uses recycled aggregate from construction waste and plant fiber reinforcement. The support plate uses a ceramsite concrete matrix and a biodegradable PLA coating, which not only realizes the resource utilization of construction waste and reduces the consumption of natural resources, but also reduces the amount of traditional steel used and the risk of corrosion.
[0014] 3. Precast composite piles can be prefabricated in factories, making quality control easy. They form a tight integral with the cement base through pressure grouting, enhancing the bond between the pile and the soil. The support plate and flange are connected by locking bolts and locking nuts, making construction fast and reliable.
[0015] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of a green building pile foundation anti-settlement device proposed in this utility model; Figure 2 This is a side sectional view of a green building pile foundation anti-settlement device proposed in this utility model; Figure 3 This is a schematic diagram of the main structure of the anti-settlement component of a green building pile foundation anti-settlement device proposed in this utility model; Figure 4 This is a schematic diagram of the support plate structure of a green building pile foundation anti-settlement device proposed in this utility model.
[0017] In the diagram: 1. Soil layer; 2. Bearing plate; 3. Anti-buoyancy anchor; 4. Support plate; 5. Precast composite pile; 6. Soil nailing cone; 7. Fixing hole; 8. Reinforcing bar; 9. Locking nut; 10. Cement base layer; 11. Locking bolt; 12. Serrated plate; 13. Flange. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0019] A green building pile foundation anti-settlement device, such as Figures 1 to 4 As shown, it includes an anti-sinking mechanism for supporting a pile foundation assembly set inside the soil layer 1. The pile foundation assembly includes a precast composite pile 5, a steel bar 8, and a cement base 10. The precast composite pile 5 is installed inside the soil layer 1. The cement base 10 is set in the grouting hole inside the precast composite pile 5 by casting. The steel bar 8 is set in the cement base 10. The anti-sinking mechanism includes a bearing plate 2, a support plate 4, and a flange 13. The bearing plate 2 is fixed to the top of the soil layer 1 by casting, and a soil nailing cone 6 is integrally formed at the bottom of the bearing plate 2. The flange 13 is integrally formed on the outer circumference of the precast composite pile 5. The support plate 4 and the flange 13 are fixed together by fasteners. A serrated plate 12 is integrally formed at the bottom of the support plate 4. The precast composite pile 5 can be made of a composite material formed by recycled aggregate and fiber-reinforced polymer. Its outer layer is an FRP grid skeleton, and the inside is filled with construction waste bricks, crushed concrete recycled aggregate, and plant fiber is added to improve toughness. The precast composite pile 5 is a hollow cylinder with grouting holes reserved inside. The cement base layer 10 is filled by pressure grouting to enhance the bond strength between the pile and the soil. After the bearing plate 2 is poured, the connection between it and the pile foundation component solidifies and forms, which can improve the integrity of the bearing plate 2 and the pile foundation component. The bearing plate 2 plays a supporting role for the pile foundation component. The soil nail cone 6 is integrally formed with the bearing plate 2 and penetrates into the soil layer 1, thereby increasing the connection stability with the soil layer and preventing the bearing plate 2 from sliding. By fixing the support plate 4 between the fastener and the flange 13, the pile top load of the pile foundation component can be effectively distributed to a larger area of soil, avoiding settlement caused by local stress concentration. The serrated plate 12 set at the bottom of the support plate 4 increases the friction between it and the bearing plate 2. The support plate 4 is made of lightweight, high-strength concrete and bio-based coating material. The substrate is ceramsite concrete, and the surface is coated with a 2-3mm thick polylactic acid (PLA)-based biodegradable coating to avoid metal corrosion and reduce chemical pollution.
[0020] The fastener includes a locking nut 9 and a locking bolt 11, which are threaded together and are used in conjunction with the fixing hole 7. When it is necessary to fix the support plate 4 and the flange 13, align the fixing holes 7 on the support plate 4 with the fixing holes 7 on the flange 13 in sequence. After alignment, pass the locking bolt 11 through the two aligned fixing holes 7, and tighten the threaded connection between the locking nut 9 and the locking bolt 11 so that the locking nut 9 and the locking bolt 11 fix the support plate 4 and the flange 13.
[0021] An anti-buoyancy anchor 3 is embedded inside the soil layer 1; By installing anti-buoyancy anchors 3, the pile foundation components are anchored to the deep stable soil layer to prevent horizontal displacement and vertical settlement. At the same time, they are anchored to the deep stable and hard soil or rock layer to form a reverse tension, which effectively resists the structural uplift caused by groundwater buoyancy, lateral earth pressure or eccentric load, and enhances the vertical and horizontal stability of the entire pile foundation system.
[0022] Working principle: The cement base layer 10 formed by pressure grouting inside the precast composite pile 5 enhances the overall strength of the pile body and the bonding force of the pile-soil interface. The support plate 4 is fixed to the flange 13 of the pile body by locking bolts 11 and locking nuts 9. The serrated plate 12 at its bottom increases the frictional resistance with the bearing plate 2 below, thereby effectively dispersing the concentrated load transmitted from the pile top to a larger area of the bearing plate. The bearing plate 2 and the soil nailing cone 6 at its bottom are tightly embedded with the shallow soil layer 1. Finally, the anti-buoyancy anchor rod 3 extends downward from the upper pile foundation structure and is anchored to the deep stable soil layer or rock layer, forming a strong reverse tensile force, which effectively resists the buoyancy of groundwater and lateral earth pressure.
[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A green building pile foundation anti-settlement device, comprising an anti-settlement mechanism for supporting pile foundation components disposed within a soil layer (1), characterized in that, The anti-sinking mechanism includes a bearing plate (2), a support plate (4), and a flange (13). The bearing plate (2) is fixed to the top of the soil layer (1) by casting. After the bearing plate (2) is cast, the connection between it and the pile foundation component is solidified. The flange (13) is integrally formed on the outer circumference of the precast composite pile (5). The support plate (4) and the flange (13) are fixed together by fasteners.
2. The green building pile foundation anti-settlement device according to claim 1, characterized in that, The bottom of the bearing plate (2) is integrally formed with a soil nailing cone (6), which is inserted into the soil layer (1).
3. The green building pile foundation anti-settlement device according to claim 2, characterized in that, The bottom of the support plate (4) is integrally formed with a serrated plate (12), which is supported on the top of the bearing plate (2).
4. The green building pile foundation anti-settlement device according to claim 1, characterized in that, The pile foundation assembly includes a precast composite pile (5), a steel bar (8), and a cement base (10). The precast composite pile (5) is installed inside the soil layer (1). The cement base (10) is set in the grouting hole inside the precast composite pile (5) by casting. The steel bar (8) is set in the cement base (10).
5. A green building pile foundation anti-settlement device according to claim 4, characterized in that, The precast composite pile (5) is a pile structure with an outer FRP grid skeleton, filled with construction waste bricks, crushed concrete recycled aggregate and plant fiber.
6. A green building pile foundation anti-settlement device according to claim 5, characterized in that, The support disk (4) is a disk-shaped structure with a substrate of ceramsite concrete and a surface coated with a polylactic acid (PLA)-based biodegradable coating.
7. A green building pile foundation anti-settlement device according to claim 6, characterized in that, The fastener includes a locking nut (9) and a locking bolt (11), which are threaded together and are used in conjunction with a fixing hole (7).
8. A green building pile foundation anti-settlement device according to claim 7, characterized in that, Anti-buoyancy anchors (3) are embedded inside the soil layer (1).