A settlement-resistant pile foundation structure suitable for water-rich sand and gravel layers

Abstract

This application relates to an anti-settlement pile foundation structure suitable for water-rich sandy gravel layers, belonging to the field of pile foundation components. It includes a pile body, a pile end enlargement, and a connector. The pile body includes a pile frame, with a filter cloth fixed to the outer wall of the frame. Multiple anti-settlement wing plates are uniformly and vertically fixed to the outer vertical end face of the pile body, with the outer vertical end faces of the wing plates penetrating the outer wall of the frame. A lower assembly seat is fixed to the bottom of the pile body, and an upper assembly seat is fixed to the top. A pile end enlargement is located below the pile body and is assembled with the lower assembly seat at the bottom. A connector is located above the pile body and is assembled with the upper assembly seat at the top. This application avoids the problem of excessive water in water-rich sandy gravel layers, allowing water in the pile body to be drained promptly, preventing water accumulation around the pile foundation and avoiding prolonged water immersion that could affect the pile foundation's service life.

Description

Technical Field

[0001] This application relates to the technical field of pile foundation components, and in particular to an anti-settlement pile foundation structure suitable for water-rich sand and gravel layers. Background Technology

[0002] Bulk grain warehouses often use pile foundations as the load-bearing support components. However, because bulk grain warehouses bear the cyclic load of grain loading and unloading, the pile foundations are subjected to cyclic impact. When the location of the bulk grain warehouse is in a water-rich sandy and gravelly stratum, not only is it difficult to ensure the quality of pile construction, but also the soil strength decreases under the action of cyclic loads, which seriously affects the bearing capacity of the foundation. Abundant groundwater, poor geological conditions, and complex load patterns lead to a reduction in the bearing capacity of the pile foundation of bulk grain warehouses, making them prone to settlement during operation and affecting structural safety.

[0003] The existing announcement number CN212561592U, entitled "A Type of Building Pile Foundation," includes a pile body, a transverse seismic-resistant frustum, and a damping plate. Fixed units are evenly distributed on the circumference of the pile body, and an external thread is provided at the lower end of the circumference. A threaded hole is opened in the center of the surface of the transverse seismic-resistant frustum, with the external thread and the threaded hole threadedly connected. Vertical seismic-resistant units are evenly distributed on the lower surface of the transverse seismic-resistant frustum. A damping plate is provided at the upper end of the pile body, and damping units are evenly distributed on the upper surface of the damping plate. A bearing platform is provided at the upper end of the damping units. The foundation also includes an anti-settlement plate, with a through hole in the center of its surface and at least four mounting screw holes evenly distributed on its surface. The anti-settlement plate is movably connected to the pile body through the through hole. This building pile foundation has a simple design, excellent seismic resistance and damping effects, and good anti-settlement performance.

[0004] Regarding the aforementioned technologies, the inventors discovered that when the pile foundations of the aforementioned bulk building warehouses are constructed on water-rich sandy gravel strata, the pile foundations lack drainage components. There is a large amount of water in the water-rich sandy gravel strata, and the water in the pile foundations cannot be drained in time, resulting in water accumulation around the pile foundations. Prolonged soaking in water affects the service life of the pile foundations. Utility Model Content

[0005] In order to overcome the problem that existing pile foundations lack drainage components, and that there is a lot of water in the water-rich sand and gravel strata, the water in the pile foundation cannot be drained in time, resulting in water accumulation around the pile foundation and the pile foundation being soaked in water for a long time, which affects the service life of the pile foundation, this application provides an anti-settlement pile foundation structure suitable for water-rich sand and gravel strata.

[0006] This application provides a settlement-resistant pile foundation structure suitable for water-rich sand and gravel layers, employing the following technical solution:

[0007] A settlement-resistant pile foundation structure suitable for water-rich sand and gravel layers includes a pile body, a pile end enlargement, and a connector. The pile body includes a pile body, with a mesh frame vertically fitted on the outside of the pile body. Filter cloth is fixed to the outer wall of the mesh frame. Multiple settlement-resistant wing plates are uniformly and vertically fixed to the outer vertical end face of the pile body, and the outer vertical end faces of the multiple settlement-resistant wing plates penetrate the outer wall of the mesh frame. A lower assembly seat is fixed to the bottom of the pile body, and an upper assembly seat is fixed to the top of the pile body. A pile end enlargement is provided below the pile body and is assembled with the lower assembly seat at the bottom of the pile body. A connector is provided above the pile body and is assembled with the upper assembly seat at the top of the pile body.

[0008] By adopting the above technical solution, when constructing foundation piles for bulk building warehouses in water-rich sand and gravel layers, the bottom of the foundation pit in the water-rich sand and gravel layer is pre-cast with shaped pile end enlargements, then backfilled with soil. The pre-set foundation pile body is then inserted into the foundation pit. After the bottom assembly seat of the foundation pile body aligns with the pile end enlargement, the foundation pit is backfilled. Connecting components are then assembled on the bottom of the foundation pile body, and the steel beam frame of the bulk building warehouse is assembled using these connecting components. When the water is squeezed by the surrounding soil at different depths, there is a gap between the mesh frame and the side wall of the pile. The water enters the gap between the mesh frame and the side wall of the pile through the mesh frame and filter cloth. Under the action of gravity, the water flows downward. The water inside the mesh frame seeps into the soil layer at the bottom of the pile body through the through hole at the bottom of the mesh frame. This avoids the presence of too much water in the water-rich sand and gravel strata. The water in the pile body can be drained in time, avoiding the problem of water accumulation around the pile foundation and the long-term water immersion of the pile foundation affecting its service life.

[0009] Optionally, side plates are vertically fixed on the outer vertical end faces of the multiple anti-settlement wing plates, and multiple anti-settlement cross plates are horizontally fixed on the outer vertical end faces of the side plates along the vertical direction.

[0010] By adopting the above technical solution, the multiple anti-settlement wing plates set on the outer wall of the pile body, along with the side plates vertically fixed to the outer wall of the multiple anti-settlement wing plates and multiple anti-settlement horizontal plates, increase the friction between the pile body and the surrounding soil, thereby improving the pile body's anti-settlement performance.

[0011] Optionally, the pile end enlargement component includes an enlarged end seat, which is located below the pile body, and an assembly frame is vertically fixed on the top surface of the enlarged end seat, and the assembly frame is assembled and inserted with the lower assembly seat at the bottom of the pile body.

[0012] By adopting the above technical solution, the enlarged end seat on the pile end enlargement component is larger than the size of the pile body. The large-sized enlarged end seat increases the surface area around the pile, thereby increasing the frictional force on the pile side, which helps to distribute the load and reduce settlement.

[0013] Optionally, an enlarged extension seat is horizontally fixed on the outer vertical end face of the enlarged end seat, and multiple supports are vertically fixed on the bottom surface of the enlarged extension seat.

[0014] By adopting the above technical solution, multiple extended seats and supports are set on the outer side of the expanded end seat to increase the contact area between the expanded end seat and the surrounding soil, increase the friction force on the pile side, and help to disperse the load and reduce settlement.

[0015] Optionally, anchors are vertically installed through multiple supports of the extended base.

[0016] By adopting the above technical solution, anchors are vertically installed on multiple supports of the extended base, and the anchors are used to lock and ensure the stability of the pile end expansion component on the bottom surface inside the foundation pit.

[0017] Optionally, the connector includes a connecting end plate and a hole seat. The connecting end plate is sleeved on the upper assembly seat at the top of the pile body, and the hole seat is horizontally provided above the connecting end plate.

[0018] By adopting the above technical solution, the connecting end plate in the connector is sleeved on the upper assembly seat at the top of the pile, which facilitates the subsequent assembly of the connector at the top of the pile for the later assembly and installation of the crossbeams of the bulk building warehouse.

[0019] Optionally, multiple connecting columns are evenly and vertically fixed on the top surface of the connecting end platform, and the multiple connecting columns are vertically slidably inserted into the hole seat. A spring damping shock absorber is vertically fixed on the top surface of the connecting end platform, and the top of the spring damping shock absorber is fixed on the bottom surface of the hole seat.

[0020] By adopting the above technical solution, the hole seat above the connecting end platform slides vertically on multiple connecting columns, and the spring damping shock absorber installed vertically between the connecting end platform and the hole seat is used to ensure the stability of the bulk building warehouse load in the later stage.

[0021] Optionally, an assembled I-beam is vertically fixed on the top surface of the hole seat.

[0022] By adopting the above technical solution, an assembled I-beam is vertically fixed on the top surface of the hole seat, and the assembled I-beam is used to install the crossbeam of the bulk building warehouse.

[0023] In summary, this application includes at least one of the following beneficial technical effects: When constructing foundation piles for bulk building warehouses in water-rich sand and gravel layers, a pre-cast pile end enlargement is prepared at the bottom of the foundation pit in the water-rich sand and gravel layer, followed by backfilling. The pre-set foundation pile body is then inserted into the foundation pit. After the assembly base at the bottom of the pile body aligns with the pile end enlargement, the foundation pit is backfilled. Connecting components are then assembled on the assembly base at the bottom of the pile body, and the steel beam frame of the bulk building warehouse is assembled using these connecting components. When water in the pile body is squeezed by the surrounding soil at different depths in the rock layer, gaps exist between the mesh frame and the side wall of the pile body. The accumulated water enters the gap between the mesh frame and the side wall of the pile body through the mesh frame and filter cloth. Under the action of gravity, the accumulated water flows downward. The accumulated water inside the mesh frame seeps into the soil layer at the bottom of the pile body through the through hole at the bottom of the mesh frame. This avoids the problem of excessive water in the water-rich sand and gravel strata. The water in the pile body can be drained in time, avoiding the problem of water accumulation around the pile foundation and the problem of the pile foundation being soaked in water for a long time, which affects the service life of the pile foundation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the overall structure of the embodiment of this application in an exploded state;

[0026] Figure 3 This is a schematic diagram of the structure of the foundation pile body in the disassembled state according to an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the pile end enlargement component in an exploded state according to an embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the connector in the exploded state according to an embodiment of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Pile body; 11. Pile body; 12. Frame; 13. Filter cloth; 14. Anti-settlement wing plate; 15. Side plate; 16. Anti-settlement transverse plate; 17. Lower assembly seat; 18. Upper assembly seat; 2. Pile end enlargement component; 21. Enlarged end seat; 22. Assembly insert frame; 23. Enlarged extension seat; 24. Support; 25. Anchor nail; 3. Connector; 31. Connecting end platform; 32. Connecting column; 33. Spring damping shock absorber; 34. Hole seat; 35. Assembly I-beam. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses an anti-settlement pile foundation structure suitable for water-rich sandy and gravelly layers. (Refer to...) Figure 1 , Figure 2 , Figure 3 and Figure 4 A settlement-resistant pile foundation structure suitable for water-rich sand and gravel layers includes a pile body 1, a pile end enlargement 2, and a connector 3. The pile body 1 includes a pile body 11, a mesh frame 12 vertically sleeved on the outside of the pile body 11, and a filter cloth 13 fixed on the outer wall of the mesh frame 12. Multiple settlement-resistant wing plates 14 are uniformly and vertically fixed on the outer vertical end face of the pile body 11, and the outer vertical end face of the multiple settlement-resistant wing plates 14 penetrates the outer wall of the mesh frame 12. A lower assembly seat 17 is fixed at the bottom of the pile body 11, and an upper assembly seat 18 is fixed at the top of the pile body 11. A pile end enlargement 2 is provided below the pile body 11, and the pile end enlargement 2 is assembled with the lower assembly seat 17 at the bottom of the pile body 11. A connector 3 is provided above the pile body 11, and the connector 3 is assembled with the upper assembly seat 18 at the top of the pile body 11.

[0032] By adopting the above technical solution, when constructing the foundation piles for bulk building warehouses in water-rich sand and gravel layers, the bottom of the foundation pit in the water-rich sand and gravel layer is pre-cast with a pre-formed pile end enlargement 2, then backfilled with soil. The pre-set foundation pile body 1 is then inserted into the foundation pit. After the assembly seat 17 at the bottom of the pile body 11 of the foundation pile body 1 is connected to the pile end enlargement 2, the foundation pit is backfilled. A connecting piece 3 is then assembled on the assembly seat 18 at the bottom of the pile body 11 of the foundation pile body 1. The steel beam frame of the bulk building warehouse is assembled using the connecting piece 3. The pile body 11 in the water-rich sand and gravel layer... After being squeezed by the surrounding soil at different depths 3, water forms a gap between the mesh frame 12 and the side wall of the pile body 11. The accumulated water is filtered through the mesh frame 12 and the filter cloth 13 and enters the gap between the mesh frame 12 and the side wall of the pile body 11. The accumulated water flows downward under the action of gravity. The accumulated water inside the mesh frame 12 seeps down from the bottom hole of the mesh frame 12 into the bottom soil layer of the pile body 1. This avoids the presence of too much water in the water-rich sand and gravel strata. The water in the pile body 1 can be drained in time, avoiding the problem of water accumulation around the pile foundation and the pile foundation being soaked in water for a long time, which affects the service life of the pile foundation.

[0033] Reference Figure 2 and Figure 3 Multiple anti-settlement wing plates 14 are vertically fixed to the outer vertical end faces of the pile body 11, and multiple anti-settlement horizontal plates 16 are horizontally fixed to the outer vertical end faces of the side plates 15 along the vertical direction. The multiple anti-settlement wing plates 14 provided on the outer wall of the pile body 11, with the side plates 15 and multiple anti-settlement horizontal plates 16 vertically fixed to the outer wall of the multiple anti-settlement wing plates 14, increase the friction between the pile body 11 and the surrounding soil, thereby improving the anti-settlement performance of the pile body 11.

[0034] Reference Figure 2 and Figure 4The pile end enlargement component 2 includes an enlarged end seat 21, which is located below the pile body 11. A vertically fixed assembly frame 22 is attached to the top surface of the enlarged end seat 21, and the assembly frame 22 is assembled and inserted into the lower assembly seat 17 at the bottom of the pile body 11. The enlarged end seat 21 on the pile end enlargement component 2 is larger than the size of the pile body 11. The larger size of the enlarged end seat 21 increases the surface area around the pile, thereby increasing the pile side friction, which helps to distribute the load and reduce settlement. An enlarged extension seat 23 is horizontally fixed to the outer vertical end face of the enlarged end seat 21, and multiple supports 24 are vertically fixed to the bottom surface of the enlarged extension seat 23. The multiple enlarged extension seats 23 and multiple supports 24 provided on the outer side of the enlarged end seat 21 aim to increase the contact area between the enlarged end seat 21 and the surrounding soil, increase the pile side friction, and help to distribute the load and reduce settlement. Anchor nails 25 are vertically installed through the multiple supports 24 of the enlarged extension seat 23. Anchor nails 25 are vertically installed on multiple supports 24 of the extended base 23 to lock and ensure the stability of the pile end enlargement 2 on the bottom surface inside the foundation pit.

[0035] Reference Figure 2 and Figure 4 The connector 3 includes a connecting end platform 31 and a hole seat 34. The connecting end platform 31 is sleeved on the upper assembly seat 18 at the top of the pile body 11, and the hole seat 34 is horizontally arranged above the connecting end platform 31. The connecting end platform 31 in the connector 3 is sleeved on the upper assembly seat 18 at the top of the pile body 11, which facilitates the subsequent assembly of the connector 3 on the top of the pile body 11 for the later assembly and installation of the crossbeams of the bulk building warehouse. Multiple connecting columns 32 are evenly and vertically fixed on the top surface of the connecting end platform 31, and the multiple connecting columns 32 are vertically slidably inserted into the hole seat 34. A spring damping shock absorber 33 is vertically fixed on the top surface of the connecting end platform 31, and the top of the spring damping shock absorber 33 is fixed to the bottom surface of the hole seat 34. The hole seat 34 above the connecting end platform 31 slides vertically on multiple connecting columns 32. A spring-damped shock absorber 33 is vertically installed between the connecting end platform 31 and the hole seat 34 to ensure the stability of the bulk building warehouse under load. An assembled I-beam 35 is vertically fixed on the top surface of the hole seat 34. The assembled I-beam 35 is used to install the crossbeams of the bulk building warehouse.

[0036] The implementation principle of an anti-settlement pile foundation structure applicable to water-rich sand and gravel layers in this application embodiment is as follows: When constructing a bulk building warehouse foundation pile in a water-rich sand and gravel layer, a pre-cast pile end enlargement component 2 is pre-formed at the bottom of the foundation pit. The enlarged end seat 21 on the pile end enlargement component 2 is larger than the size of the pile body 11. The larger enlarged end seat 21 increases the surface area around the pile, thereby increasing the pile side friction, which helps to distribute the load and reduce settlement. Then, soil is filled in. After inserting the pre-set pile body 1 into the foundation pit, the lower assembly seat 17 of the pile body 11 is connected to the pile end enlargement component 2. Then, the foundation pit is filled in. Multiple anti-settlement wing plates 14 are provided on the outer wall of the pile body 11. The side plates 15 and multiple anti-settlement horizontal plates 16 vertically fixed to the outer wall of the multiple anti-settlement wing plates 14 increase the... The friction between the pile body 11 and the surrounding soil is generated by the assembly of the base 18 and the assembly of the connector 3 on the bottom of the pile body 11. The hole seat 34 above the connecting end platform 31 slides vertically on multiple connecting columns 32. A spring damping shock absorber 33 is vertically installed between the connecting end platform 31 and the hole seat 34. An assembly I-beam 35 is vertically fixed on the top surface of the hole seat 34. The assembly I-beam 35 is used to install the crossbeam of the bulk building warehouse. After the water in the pile body 11 in the water-rich sand and gravel layer is squeezed by the surrounding soil 3 at different depths, there is a gap between the mesh frame 12 and the side wall of the pile body 11. The water accumulates through the mesh frame 12 and the filter cloth 13 and enters the gap between the mesh frame 12 and the side wall of the pile body 11. The water flows downward under the action of gravity. The water inside the mesh frame 12 seeps into the bottom soil layer of the pile body 1 through the bottom hole of the mesh frame 12.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A settlement-resistant pile foundation structure suitable for water-rich sand and gravel layers, characterized in that, The system includes a pile body (1), a pile end enlargement component (2), and a connector (3). The pile body (1) includes a pile body (11). A wire mesh frame (12) is vertically fitted around the outside of the pile body (11), and a filter cloth (13) is fixed on the outer wall of the wire mesh frame (12). Multiple anti-settlement wing plates (14) are uniformly and vertically fixed on the outer vertical end face of the pile body (11), and the outer vertical end faces of the multiple anti-settlement wing plates (14) penetrate the outer wall of the wire mesh frame (12). The bottom end of the pile body (11) is fixed with a lower assembly seat (17), and the top end of the pile body (11) is fixed with an upper assembly seat (18). The pile end enlargement part (2) is provided below the pile body (11), and the pile end enlargement part (2) is assembled with the lower assembly seat (17) at the bottom end of the pile body (11). The connecting part (3) is provided above the pile body (11), and the connecting part (3) is assembled with the upper assembly seat (18) at the top end of the pile body (11).

2. The anti-settlement pile foundation structure suitable for water-rich sandy and gravel layers according to claim 1, characterized in that: A side plate (15) is vertically fixed on the outer vertical end face of the multiple anti-settlement wing plates (14), and multiple anti-settlement horizontal plates (16) are horizontally fixed on the outer vertical end face of the side plate (15) in the vertical direction.

3. The anti-settlement pile foundation structure suitable for water-rich sandy and gravelly layers according to claim 1, characterized in that: The pile end expansion component (2) includes an expansion end seat (21), which is located below the pile body (11). An assembly frame (22) is vertically fixed on the top surface of the expansion end seat (21), and the assembly frame (22) is assembled and inserted into the lower assembly seat (17) at the bottom of the pile body (11).

4. The anti-settlement pile foundation structure suitable for water-rich sandy and gravel layers according to claim 3, characterized in that: An enlarged extension seat (23) is horizontally fixed on the outer vertical end face of the enlarged end seat (21), and multiple supports (24) are vertically fixed on the bottom surface of the enlarged extension seat (23).

5. A settlement-resistant pile foundation structure suitable for water-rich sandy and gravel layers according to claim 4, characterized in that: Anchor nails (25) are vertically installed on each of the multiple supports (24) of the extended base (23).

6. The anti-settlement pile foundation structure suitable for water-rich sandy and gravel layers according to claim 1, characterized in that: The connector (3) includes a connecting end plate (31) and a hole seat (34). The connecting end plate (31) is sleeved on the upper assembly seat (18) at the top of the pile body (11), and the hole seat (34) is horizontally arranged above the connecting end plate (31).

7. A settlement-resistant pile foundation structure suitable for water-rich sandy and gravel layers according to claim 6, characterized in that: Multiple connecting columns (32) are vertically fixed evenly on the top surface of the connecting end platform (31), and the multiple connecting columns (32) are vertically slidably inserted into the hole seat (34). A spring damping shock absorber (33) is vertically fixed on the top surface of the connecting end platform (31), and the top of the spring damping shock absorber (33) is fixed on the bottom surface of the hole seat (34).

8. A settlement-resistant pile foundation structure suitable for water-rich sandy and gravel layers according to claim 7, characterized in that: An assembled I-beam (35) is vertically fixed on the top surface of the hole seat (34).

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