High-bearing-capacity pile foundation structure for soft bottom layer

Abstract

The utility model provides a high bearing capacity pile foundation structure for a soft bottom layer, and relates to the technical field of pile foundation structures, the high bearing capacity pile foundation structure comprises a pile body and a central shaft, the lower end of the pile body is inserted into a soft mud layer, and the upper end of the pile body extends into a foundation platform; the center shaft is arranged in the center of the interior of the pile body, multiple rows of notches are formed in the outer side of the center shaft at equal intervals from top to bottom, and worm wheels are rotationally arranged on the inner sides of the notches; the pile is composed of the pile body and the center shaft, the pile body is used for pouring and filling cement, before pouring, the worm shaft is rotated, the worm wheel is made to rotate, the insertion rod is driven to rotate and be inserted into a soft mud layer, in the insertion process, a marking-out space is formed, the fixing force with the soft mud layer is increased through the insertion rod, and meanwhile after pouring and filling cement, the pile body is fixed. And after the filling cement enters the marking-out space and is integrally solidified with the filling cement in the pile body, the fixing force is further enhanced, and the overall structure is prevented from loosening.

Description

Technical Field

[0001] This utility model relates to the field of pile foundation technology, and in particular to a high-bearing-capacity pile foundation structure for soft subgrades. Background Technology

[0002] Pile foundation is a type of deep foundation in which the tops of multiple piles are connected into a whole through a pile cap to jointly bear dynamic and static loads. It utilizes the pile body to penetrate soft soil layers and transfer the load to a harder, denser or less compressible bearing layer. It has the characteristics of high bearing capacity and wide applicability and is widely used in high-rise buildings, ports, bridges and other projects.

[0003] Pile foundation structures generally consist of a steel frame and cement filling. The steel frame passes through a weak soil layer, and cement is filled inside the steel frame to achieve a fixing effect. However, due to the characteristics of the weak soil layer, such as high water content, large void ratio, and low shear strength, the fixing force between the outside of the steel frame and the weak soil layer is insufficient, making it very easy to collapse and affecting stability. Therefore, this utility model proposes a high bearing capacity pile foundation structure for weak soil layers to solve the problems existing in the prior art. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a high-bearing-capacity pile foundation structure for weak subgrades. This high-bearing-capacity pile foundation structure for weak subgrades enhances the fixing force and prevents the overall structure from loosening.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a high bearing capacity pile foundation structure for soft soil layers, including a pile body and a central shaft, wherein the lower end of the pile body is inserted into the interior of the soft mud layer, and the upper end of the pile body extends into the interior of the foundation platform;

[0006] The central shaft is located at the center of the pile body, and there is a notch on the outside of the central shaft. Multiple rows of notches are arranged at equal intervals from top to bottom. A worm gear is rotatably provided on the inside of the notch, and an insertion rod is connected to one side of the worm gear. The insertion rod is inserted into the soft mud layer based on the rotation of the worm gear and forms a carved space. The inside of the pile body is filled with filling cement, and the filling cement fills the inside of the carved space. A worm shaft is rotatably provided inside the central shaft, and the worm shaft is adapted to the worm gear.

[0007] A further improvement is that each column of notches has at least three sets, and the three sets of notches are arranged at equal angles around the center of the central axis.

[0008] A further improvement is that a flow guiding component is provided on the outer side of the central axis, and multiple sets of the flow guiding component are provided, with each set of the flow guiding component facing the multiple sets of the sculpted space.

[0009] A further improvement is that the flow guiding component includes a support plate and a flow guiding plate, the support plate is fixed to the central axis, the flow guiding plate is disposed above the support plate, and the width of the flow guiding plate is greater than the width of the support plate.

[0010] A further improvement is that: a knob is provided at the upper end of the worm shaft, a bearing seat is provided at the lower part inside the central shaft, and the lower end of the worm shaft is connected to the bearing seat.

[0011] A further improvement is that the pile body includes a ring frame and support rods, and multiple sets of the ring frame and support rods are provided, with the multiple sets of support rods connected at equal angles to the edges of the multiple sets of ring frames.

[0012] A further improvement is that the inner side of the bottom ring frame is provided with a connecting rib to connect to the bottom support plate, and the lower end of the central shaft is connected to the bottom support plate.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model consists of a pile body and a central shaft. The inside of the pile body is used for filling with cement. Before filling, the worm shaft is rotated to make the worm wheel rotate, which drives the insertion rod to rotate and insert into the soft mud layer. During the insertion process, a space is formed. The insertion rod increases the fixing force with the soft mud layer. At the same time, after the filling cement is poured, the filling cement enters the space and the filling cement inside the pile body and solidifies as a whole, which further enhances the fixing force and prevents the overall structure from loosening.

[0015] 2. In the process of pouring and filling cement, the present invention guides the downward flowing cement to the marked space through the guide plate, thereby increasing the uniformity of filling the marked space. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure on the central axis of this utility model;

[0018] Figure 3 This is a schematic diagram of the pile body of this utility model.

[0019] The components are: 1. Pile body; 2. Central axis; 3. Mud layer; 4. Foundation platform; 5. Notch; 6. Worm gear; 7. Insert rod; 8. Marked space; 9. Cement filling; 10. Worm shaft; 11. Support plate; 12. Guide plate; 13. Knob; 14. Bearing seat; 15. Ring frame; 16. Support rod; 17. Base plate. Detailed Implementation

[0020] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0021] Example 1

[0022] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a high bearing capacity pile foundation structure for soft subgrade, including a pile body 1 and a central shaft 2. The lower end of the pile body 1 is inserted into the interior of the soft mud layer 3, and the upper end of the pile body 1 extends into the interior of the foundation platform 4.

[0023] The central shaft 2 is located at the center of the pile body 1, and a notch 5 is provided on the outer side of the central shaft 2. Multiple rows of notches 5 are provided at equal intervals from top to bottom. A worm gear 6 is rotatably provided on the inner side of the notch 5, and an insertion rod 7 is connected to one side of the worm gear 6. The insertion rod 7 is inserted into the soft mud layer 3 based on the rotation of the worm gear and forms a carved space 8. The interior of the pile body 1 is filled with filling cement 9, and the filling cement 9 fills the interior of the carved space 8. A worm shaft 10 is rotatably provided inside the central shaft 2, and the worm shaft 10 is adapted to the worm gear 6. In use, it consists of a pile body 1 and a central shaft 2. The pile body 1 is used to fill with cement 9. Before filling, the worm shaft 10 is rotated, which causes the worm wheel 6 to rotate and drive the insertion rod 7 to rotate and insert into the soft mud layer 3. During the insertion process, a space 8 is formed. The insertion rod 7 increases the fixing force with the soft mud layer 3. At the same time, after the filling cement 9 is filled, the filling cement 9 enters the space 8 and the filling cement 9 inside the pile body 1 and solidifies as a whole, which further enhances the fixing force and prevents the overall structure from loosening.

[0024] Each column of notches 5 has three sets, and the three sets of notches 5 are arranged at equal angles around the center of the central axis 2. The insertion rods 7 on the multi-directional notches 5 are fastened into the soft mud layer 3 to increase the fixing force.

[0025] A flow guiding assembly is provided on the outer side of the central shaft 2, and multiple sets of the flow guiding assembly are provided, each set facing one of the multiple sets of the marked spaces 8. The flow guiding assembly includes a support plate 11 and a guide plate 12. The support plate 11 is fixed to the central shaft 2, and the guide plate 12 is positioned above the support plate 11, with a width greater than that of the support plate 11. During the pouring of the filling cement 9, the guide plate 12 directs the downward-flowing filling cement 9 to the marked spaces 8, increasing the uniformity of filling the marked spaces 8.

[0026] The upper end of the worm shaft 10 is provided with a knob 13, and the lower part of the central shaft 2 is provided with a bearing seat 14. The lower end of the worm shaft 10 is connected to the bearing seat 14. In use, rotating the knob 13 drives the worm shaft 10 to rotate, causing the worm wheel 6 to rotate, which drives the insertion rod 7 to rotate and insert into the soft mud layer 3. During the insertion process, a scribing space 8 is formed. The insertion rod 7 increases the fixing force with the soft mud layer 3. At the same time, after the filling cement 9 is poured in, the filling cement 9 enters the scribing space 8 and the filling cement 9 inside the pile body 1 and solidifies as a whole, further enhancing the fixing force and preventing the overall structure from loosening.

[0027] Example 2

[0028] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a high bearing capacity pile foundation structure for soft subgrade, including a pile body 1 and a central shaft 2. The lower end of the pile body 1 is inserted into the interior of the soft mud layer 3, and the upper end of the pile body 1 extends into the interior of the foundation platform 4.

[0029] The central shaft 2 is located at the center of the pile body 1, and a notch 5 is provided on the outer side of the central shaft 2. Multiple rows of notches 5 are provided at equal intervals from top to bottom. A worm gear 6 is rotatably provided on the inner side of the notch 5, and an insertion rod 7 is connected to one side of the worm gear 6. The insertion rod 7 is inserted into the soft mud layer 3 based on the rotation of the worm gear and forms a carved space 8. The interior of the pile body 1 is filled with filling cement 9, and the filling cement 9 fills the interior of the carved space 8. A worm shaft 10 is rotatably provided inside the central shaft 2, and the worm shaft 10 is adapted to the worm gear 6. In use, it consists of a pile body 1 and a central shaft 2. The pile body 1 is used to fill with cement 9. Before filling, the worm shaft 10 is rotated, which causes the worm wheel 6 to rotate and drive the insertion rod 7 to rotate and insert into the soft mud layer 3. During the insertion process, a space 8 is formed. The insertion rod 7 increases the fixing force with the soft mud layer 3. At the same time, after the filling cement 9 is filled, the filling cement 9 enters the space 8 and the filling cement 9 inside the pile body 1 and solidifies as a whole, which further enhances the fixing force and prevents the overall structure from loosening.

[0030] Each column of notches 5 has three sets, and the three sets of notches 5 are arranged at equal angles around the center of the central axis 2. The insertion rods 7 on the multi-directional notches 5 are fastened into the soft mud layer 3 to increase the fixing force.

[0031] The pile body 1 includes a ring frame 15 and support rods 16. Multiple sets of the ring frame 15 and support rods 16 are provided, and these multiple sets of support rods 16 are connected at equal angles to the edges of the multiple sets of ring frames 15. A connecting rib is provided on the inner side of the bottom ring frame 15, connecting to a bottom support plate 17. The lower end of the central shaft 2 is connected to the bottom support plate 17. Multiple hollow areas are provided on the pile body 1 to facilitate the insertion of the rod 7 into the soft mud layer 3.

[0032] This high-bearing-capacity pile foundation structure for soft soil layers consists of a pile body 1 and a central shaft 2. The pile body 1 is used for filling with cement 9. Before filling, the worm shaft 10 is rotated, causing the worm wheel 6 to rotate, which in turn drives the insertion rod 7 to rotate and insert into the soft mud layer 3. During insertion, a space 8 is created. The insertion rod 7 increases the fixing force with the soft mud layer 3. Simultaneously, after the cement 9 is filled, it solidifies integrally with the cement 9 inside the pile body 1 within the space 8, further enhancing the fixing force and preventing the overall structure from loosening. Furthermore, during the filling of the cement 9, the guide plate 12 directs the downward-flowing cement 9 to the space 8, increasing the uniformity of filling the space 8.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-bearing-capacity pile foundation structure for weak subgrades, comprising piles (1) and a central axis (2), characterized in that: The lower end of the pile (1) is inserted into the interior of the soft mud layer (3), and the upper end of the pile (1) extends into the interior of the foundation platform (4). The central shaft (2) is located at the center of the pile body (1), and a notch (5) is provided on the outside of the central shaft (2). The notch (5) is provided in multiple rows at equal intervals from top to bottom. A worm wheel (6) is rotatably provided on the inside of the notch (5), and an insertion rod (7) is connected to one side of the worm wheel (6). The insertion rod (7) is inserted into the soft mud layer (3) based on the rotation of the worm wheel and forms a carved space (8). The inside of the pile body (1) is filled with filling cement (9), and the filling cement (9) fills the inside of the carved space (8). A worm shaft (10) is rotatably provided inside the central shaft (2), and the worm shaft (10) is adapted to the worm wheel (6).

2. A high-bearing-capacity pile foundation structure for a weak subgrade as described in claim 1, characterized in that: Each column of the notch (5) has at least three sets, and the three sets of the notch (5) are arranged at equal angles around the center of the central axis (2).

3. A high-bearing-capacity pile foundation structure for a weak subgrade as described in claim 1, characterized in that: The outer side of the central axis (2) is provided with a flow guide component, and multiple sets of the flow guide component are provided, with the multiple sets of the flow guide component facing the multiple sets of the sculpted space (8).

4. A high-bearing-capacity pile foundation structure for a weak subgrade as described in claim 3, characterized in that: The flow guiding assembly includes a support plate (11) and a flow guiding plate (12). The support plate (11) is fixed to the central axis (2). The flow guiding plate (12) is located above the support plate (11), and the width of the flow guiding plate (12) is greater than the width of the support plate (11).

5. A high-bearing-capacity pile foundation structure for a weak subgrade as described in claim 1, characterized in that: The upper end of the worm shaft (10) is provided with a knob (13), and the lower part of the center shaft (2) is provided with a bearing seat (14), and the lower end of the worm shaft (10) is connected to the bearing seat (14).

6. A high-bearing-capacity pile foundation structure for a weak subgrade as described in claim 1, characterized in that: The pile body (1) includes a ring frame (15) and a support rod (16). The ring frame (15) and the support rod (16) are provided in multiple sets, and the multiple sets of the support rod (16) are connected at the edges of the multiple sets of the ring frame (15) at the same angle.

7. A high-bearing-capacity pile foundation structure for a weak subgrade as described in claim 6, characterized in that: The inner side of the bottom ring frame (15) is provided with connecting ribs and connected to the bottom support plate (17), and the lower end of the central shaft (2) is connected to the bottom support plate (17).

Images