Special-shaped pile with high bearing capacity

Abstract

The utility model relates to a special-shaped pile with higher bearing capacity, which comprises a plurality of pile sections, each pile section comprises a fixed part and a connecting part, the connecting part is connected to the bottom end of the fixed part, the diameter of the connecting part is smaller than that of the fixed part, a grouting pipe is arranged between the fixed part and the connecting part, and the grouting pipe is connected with the fixed part. The grouting pipe is connected with a connecting part, the position, corresponding to the surface of the connecting part, of the grouting pipe is connected with a slurry discharging pipe, the slurry discharging pipe is communicated with the interior of the grouting pipe and the exterior of the connecting part, a connecting assembly used for limiting the connecting part is arranged between every two adjacent pile sections, and the bottom end of the connecting part at the lowest position is connected with a fixed conical head. And concrete is poured into the grouting pipe. The special-shaped pile has the effect of improving the bearing capacity of the special-shaped pile.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundations, in particular to a special-shaped pile with higher bearing capacity. Background Art

[0002] Special-shaped piles are a special type of pile whose cross-section or longitudinal profile differs from conventional piles. By modifying the pile's geometric characteristics, special-shaped piles are designed to increase the foundation's bearing capacity and maximize the potential of the soil and the pile itself.

[0003] Reference Figure 1 The figure shows a common special-shaped pile, which includes a pile body 01, a plurality of grooves 02 arranged along its length, and a connecting cone 03 at the bottom of the pile body 01. The provision of the grooves 02 increases the friction between the pile body 01 and the soil layer, thereby improving the bearing capacity of the pile body.

[0004] However, when the above-mentioned special-shaped piles completely enter the soil layer, since the surface of the pile body contacts the soil layer first, the contact force between the soil layer and the surface of the pile body is higher, and the groove contacts the soil layer later. In the initial stage, the contact force between the soil layer and the groove is low, and there may even be a phenomenon that the soil layer does not contact the surface of the groove. In this way, there is a gap between the soil layer and the surface of the groove. After a long time, the soil layer drops under the pressure of the surface pedestal (foundation settlement), and the gap will gradually decrease until the soil layer is close to the surface of the groove. my country's infrastructure industry is developed and mature, and the construction period of house construction is short. There is a possibility that the house will be completed before the above-mentioned gap is eliminated. Foundation settlement will cause the soil layer near the special-shaped pile to move, and the contact area between the groove and the soil layer is small, which reduces the close contact between the soil layer and the special-shaped pile, causing the pedestal and the special-shaped pile to also move, and the house is easily damaged. In this way, the bearing capacity of the special-shaped pile is reduced. Utility Model Content

[0005] In order to improve the bearing capacity of special-shaped piles, the present application provides a special-shaped pile with higher bearing capacity.

[0006] This application provides special-shaped piles with higher bearing capacity using the following technical solutions:

[0007] A special-shaped pile with high bearing capacity includes several pile sections, each of which includes a fixed part and a connecting part. The connecting part is connected to the bottom end of the fixed part, and the diameter of the connecting part is smaller than the diameter of the fixed part. A grouting pipe is provided between the fixed part and the connecting part. The grouting pipe is connected to a grouting pipe at a position corresponding to the surface of the connecting part. The grouting pipe is connected to the inside of the grouting pipe and the outside of the connecting part. A connecting component for limiting the connecting part is provided between two adjacent pile sections. A fixed cone head is connected to the bottom end of the connecting part at the lowest point. During construction, concrete is poured into the grouting pipe.

[0008] By adopting the above technical solution, before construction, construction workers calculate the number of pile segments based on process requirements. They then connect the segments using connecting assemblies. Once the segments are fully immersed in the soil, concrete is poured into the grouting pipes. The concrete flows out of the connection along the grouting pipes until it covers the gap between the connection and the soil. Finally, the concrete cools, completing the construction of the special-shaped pile. Construction workers can calculate the number of pile segments based on process requirements and actual site conditions, eliminating the need to prefabricate piles of specified lengths. This improves the adaptability and adaptability of the special-shaped piles and facilitates their transportation. Concrete is then used to fill the gap between the connection and the soil through the grouting and grouting pipes. This allows the soil near the connection to exert pressure on the surface of the connection, reducing the possibility of soil movement near the special-shaped pile and ensuring constant friction between the soil and the special-shaped pile. This reduces the impact of foundation settlement on the special-shaped pile and the foundation cap. Compared to existing technologies, this improves the bearing capacity of the special-shaped piles, reduces the possibility of damage to the building, and also reduces the magnitude of soil settlement to a certain extent.

[0009] Optionally, the slurry discharge pipe is arranged at an angle, with the distance between the slurry discharge pipe and the top end of the fixing portion gradually increasing from top to bottom as a reference direction.

[0010] By adopting the above technical solution, the grouting pipe is set at an angle, which makes it easy for the concrete in the grouting pipe to be discharged smoothly. Compared with the horizontal setting of the grouting pipe, the possibility of concrete clogging the grouting pipe is reduced.

[0011] Optionally, the fixing portion is provided with a plug-in groove matching the outer shape of the connecting portion, a fixing ring is connected to the surface of the connecting portion, and an installation step is provided at the position of the plug-in groove corresponding to the fixing ring. When two adjacent pile segments are installed, the connecting portion on one pile segment is plugged into the plug-in groove of the other pile segment, and the top surface of the fixing ring is flush with the top surface of the fixing portion.

[0012] By adopting the above technical solution, construction workers form multiple steps at the contact parts of two adjacent pile sections through the coordination between the connecting part and the plug-in groove, combined with the coordination between the installation step and the fixing ring, thereby hindering the flow of water inside the soil layer into the interior of the fixing part, thereby reducing the possibility of water infiltration into the interior of the fixing part and extending the service life of the special-shaped piles.

[0013] Optionally, the connecting assembly includes a connecting column, a fixed column, a limiting ring block and a pressure spring, the connecting column is connected to several at the bottom of the connecting part, the fixed column is connected to the bottom end of the connecting column, the diameter of the fixed column is larger than the diameter of the connecting column, the fixed part is provided with a receiving groove and several sliding grooves, the receiving groove is connected to the sliding groove, the limiting ring block slides in the sliding groove, the limiting ring block is provided with a resistance ring surface for guiding the movement of the limiting ring block, the pressure spring is provided in the sliding groove and connected between the limiting ring block and the end wall of the sliding groove, when installed, the limiting ring block resists the connecting column and the fixed column.

[0014] By adopting the above technical solution, when connecting pile segments, construction workers insert the connecting portion of one pile segment into the insertion groove of another pile segment, inserting the fixed column into the receiving groove. During this process, the fixed column applies pressure against the annular surface, causing the limiting ring block to move and the pressure spring to be compressed until the connecting segment fully enters the receiving groove. The limiting ring block is then moved in the opposite direction by the pressure spring until it abuts the connecting segment, thereby limiting the degree of freedom of the pile segment and achieving connection between two adjacent pile segments. The above structure is a one-time installation structure. Compared with the effect of detachable pile segments in other existing technologies, it can better ensure the overall stability of the special-shaped pile.

[0015] Optionally, a mounting groove is provided at a position of the connecting portion corresponding to the outlet end of the slurry discharge pipe, a retaining net is connected in the mounting groove, and the retaining net covers the outlet end of the slurry discharge pipe.

[0016] By adopting this technical solution, when the special-shaped piles enter the soil, larger particles in the soil easily enter the slurry discharge pipe, thereby reducing the concrete discharge capacity of the slurry discharge pipe and even blocking the pipe. Construction workers used retaining nets to prevent larger particles from entering the slurry discharge pipe, ensuring that concrete can smoothly fill the gap between the soil layer and the connection.

[0017] Optionally, a plurality of notches are formed on the surface of the fixing portion, and the notches are arranged vertically.

[0018] By adopting the above technical solution, the notch groove is used to increase the contact area between the fixing part and the soil layer, reducing the possibility of the special-shaped pile rotating in the horizontal direction due to the influence of the bearing platform, and improving the stability of the special-shaped pile.

[0019] Optionally, a plurality of right-angle teeth are connected in the notch groove, and the distance between the right-angle teeth and the bottom wall of the notch groove gradually decreases from top to bottom as a reference direction.

[0020] By adopting the above technical solution, construction workers contact the soil layer through the right-angle surface of the right-angle teeth, which increases the friction between the right-angle teeth and the soil layer, hinders the vertical movement of the special-shaped pile under force, and improves the stability of the special-shaped pile.

[0021] Optionally, a plurality of page plates are connected between the fixing portion and the connecting portion, and the page plates are triangular plates.

[0022] By adopting the above technical solution, several leaf plates are used to increase the contact area between the connection part and the soil layer, further reducing the possibility of the special-shaped pile rotating in the horizontal direction and further improving the stability of the special-shaped pile.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] Before construction, construction workers calculate the number of pile segments based on process requirements. They then connect the segments using connecting assemblies. Once the segments are fully immersed in the soil, concrete is poured into the grouting pipes. The concrete flows out of the connection along the grouting pipes until it covers the gap between the connection and the soil. Finally, the concrete cools, completing the construction of the special-shaped pile. Construction workers can calculate the number of pile segments based on process requirements and site conditions, eliminating the need to prefabricate piles of specified lengths. This improves the adaptability and adaptability of special-shaped piles and facilitates their transportation. Concrete is then used to fill the gap between the connection and the soil using the grouting and grouting pipes. This allows the soil near the connection to exert pressure on the surface of the connection, reducing the possibility of soil movement near the special-shaped pile and ensuring constant friction between the soil and the special-shaped pile. This reduces the impact of foundation settlement on the special-shaped pile and the foundation cap. Compared to existing technologies, this improves the bearing capacity of the special-shaped pile, reduces the potential for damage to the building, and also reduces the magnitude of soil settlement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a special-shaped pile in the prior art.

[0026] Figure 2 It is a schematic diagram of the overall structure of the special-shaped pile in the embodiment of the present application.

[0027] Figure 3 It is a structural diagram of the pile section in the embodiment of the present application.

[0028] Figure 4 It is an exploded diagram used to illustrate the structure of the connection components in the embodiment of the present application.

[0029] Figure 5 It is a cross-sectional view used to illustrate the structure of the connection component in the embodiment of the present application.

[0030] Explanation of the accompanying reference numerals: 01, pile body; 02, groove; 03, connecting cone head; 1, pile section; 11, fixing part; 111, notched groove; 112, right-angle tooth; 113, plug-in groove; 114, accommodating groove; 115, sliding groove; 12, connecting part; 121, retaining net; 122, fixing ring; 13, fixing cone head; 14, leaf plate; 2, grouting pipe; 21, slurry discharge pipe; 3, connecting assembly; 31, connecting column; 32, fixing column; 33, limiting ring block; 34, pressure spring. DETAILED DESCRIPTION

[0031] The following is combined with Figure 2-Figure 5 This application is described in further detail.

[0032] The embodiment of the present application discloses a special-shaped pile with a high bearing capacity. Figure 2 The special-shaped pile with high bearing capacity includes several pile sections 1. The pile section 1 includes a fixing part 11 and a connecting part 12. The fixing part 11 and the connecting part 12 are both cylindrical. The fixing part 11 and the connecting part 12 are integrally formed, and the diameter of the connecting part 12 is smaller than the diameter of the fixing part 11. The bottom end of the lowest connecting part 12 is fixedly connected to a fixed cone head 13.

[0033] Reference Figure 3 The surface of the fixing portion 11 is provided with a plurality of notched grooves 111. Six notched grooves 111 are used as an example in this embodiment, and are evenly distributed circumferentially around the axis of the fixing portion 11. A plurality of right-angled teeth 112 are fixedly connected within the notched grooves 111. The right-angled sides of the right-angled teeth 112 contact the fixing portion 11. From top to bottom, the distance between the inclined surface of the right-angled teeth 112 and the bottom wall of the notched grooves 111 gradually decreases. The combination of the notched grooves 111 and the right-angled teeth 112 increases the contact area between the fixing portion 11 and the soil layer, thereby improving the stability of the special-shaped pile.

[0034] Reference Figure 3 In order to further improve the stability of the special-shaped pile, a plurality of leaf plates 14 are fixedly connected between the fixing portion 11 and the connecting portion 12. The leaf plates 14 are triangular plates and are used to increase the contact area between the connecting portion 12 and the soil layer.

[0035] Reference Figure 4 and Figure 5A grouting pipe 2 is provided between the fixed portion 11 and the connecting portion 12. The grouting pipe 2 is vertically arranged. A grouting pipe 21 is fixedly connected to the position of the grouting pipe 2 corresponding to the connecting portion 12. The grouting pipe 21 is tilted, and the distance between the grouting pipe 21 and the top of the fixed portion 11 gradually increases from top to bottom. The grouting pipe 21 connects the outside of the connecting portion 12 with the inside of the grouting pipe 2. The tilted arrangement of the grouting pipe 21 is conducive to the smooth discharge of concrete. A mounting groove is provided at the position of the connecting portion 12 corresponding to the outlet end of the grouting pipe 21. A retaining net 121 is fixedly connected in the mounting groove. The retaining net 121 covers the outlet end of the grouting pipe 21. The retaining net 121 is used to prevent larger soil particles from entering the grouting pipe 21.

[0036] Reference Figure 4 and Figure 5 The top of the fixed part 11 is provided with a plug-in slot 113 that matches the shape of the connecting part 12. A fixing ring 122 is fixedly connected to the connecting part 12. A mounting step that matches the shape of the fixing ring 122 is provided at the plug-in slot 113 corresponding to the fixing ring 122. A connecting assembly 3 is provided between the fixed part 11 and the connecting part 12. The connecting assembly 3 includes a connecting column 31, a fixing column 32, a limiting ring block 33 and a pressure spring 34. Several connecting columns 31 are fixedly connected to the bottom end of the connecting part 12. In this embodiment, four are taken as an example. The four connecting columns 31 are evenly distributed circumferentially around the axis of the connecting part 12. The fixing column 32 is fixedly connected to the bottom end of the connecting column 31, and the diameter of the fixing column 32 is larger than the diameter of the connecting column 31.

[0037] Reference Figure 5 On the bottom wall of the insertion slot 113, corresponding to the position of the fixed column 32, there are a receiving slot 114 and a sliding slot 115. Two sliding slots 115 are provided, and the two sliding slots 115 are arranged opposite each other and both communicate with the receiving slot 114. The limiting ring block 33 slides in the sliding slot 115. The limiting ring block 33 is provided with a contact annular surface, which is used to initially contact the fixed column 32 to guide the movement of the limiting ring block 33. Two pressure springs 34 are provided in the sliding slot 115, and the pressure springs 34 are located between the limiting ring block 33 and the end wall of the sliding slot 115.

[0038] During installation, the construction workers insert the connecting part 12 of one pile segment 1 into the inserting groove 113 of another pile segment 1. At this time, the top wall of the fixing ring 122 is flush with the top wall of the fixing part 11, and the fixing column 32 is inserted into the receiving groove 114. During this process, the fixing column 32 applies pressure against the annular surface, limiting the movement of the ring block 33, and the pressure spring 34 is compressed until the connecting column 31 completely enters the receiving groove 114. The limiting ring block 33 moves in the opposite direction under the action of the pressure spring 34, and at the same time fits the connecting column 31 and the fixing column 32, thereby limiting the freedom of the connecting column 31 and realizing the installation between two adjacent pile segments 1.

[0039] Reference Figure 5 In this embodiment, the connecting component 3 is a one-time installation structure, which better ensures the overall structural strength of the special-shaped pile compared to the detachable pile section 1.

[0040] The implementation principle of a special-shaped pile with a higher bearing capacity in the embodiment of the present application is as follows: before construction, the construction personnel calculate the installation number of pile segments 1 according to the process requirements and actual conditions on site. During assembly, the connecting portion 12 of one pile segment 1 is inserted into the plug-in groove 113 of another pile segment 1, and the fixing column 32 is inserted into the receiving groove 114. During this process, the fixing column 32 applies pressure against the annular surface, restricting the movement of the ring block 33, and the pressure spring 34 is compressed until the connecting column 31 completely enters the receiving groove 114. The limiting ring block 33 moves in the opposite direction under the action of the pressure spring 34, and at the same time fits the connecting column 31 and the fixing column 32. Then, the special-shaped pile is driven into the soil layer by a pile driver, and then concrete is poured into the grouting pipe 2. The concrete is guided by the grouting pipe 2 and the grouting pipe 21 to flow into the gap between the connecting portion 12 and the soil layer until the gap is filled. After the concrete cools, the construction of the special-shaped pile is completed.

[0041] Construction personnel can calculate the number of pile sections 1 according to process requirements and actual on-site conditions, without the need to prefabricate pile bodies 01 of specified lengths in advance, thereby improving the resilience and applicability of special-shaped piles and facilitating the transportation of special-shaped piles. At the same time, concrete is used to fill the gap between the connection part 12 and the soil layer through the cooperation of the grouting pipe 2 and the grouting pipe 21. In this way, the soil layer near the connection part 12 also exerts pressure on the surface of the connection part 12, reducing the possibility of movement of the soil layer near the special-shaped pile, and ensuring that the soil layer always maintains friction with the special-shaped pile. In this way, foundation settlement occurs, reducing the impact on the special-shaped pile and the pedestal. Compared with the existing technology, the bearing capacity of the special-shaped pile is improved, the possibility of damage to the house is reduced, and the amplitude of soil settlement is reduced to a certain extent.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A special-shaped pile with high bearing capacity, characterized by: The invention comprises a plurality of pile sections (1), wherein the pile section (1) comprises a fixing portion (11) and a connecting portion (12), wherein the connecting portion (12) is connected to the bottom end of the fixing portion (11), and the diameter of the connecting portion (12) is smaller than the diameter of the fixing portion (11), a grouting pipe (2) is provided between the fixing portion (11) and the connecting portion (12), a grouting pipe (21) is connected to the grouting pipe (2) at a position corresponding to the surface of the connecting portion (12), and the grouting pipe (21) is connected to the inside of the grouting pipe (2) and the outside of the connecting portion (12), a connecting assembly (3) for limiting the connecting portion (12) is provided between two adjacent pile sections (1), and a fixing cone head (13) is connected to the bottom end of the connecting portion (12) at the lowest point, and concrete is poured into the grouting pipe (2) during construction.

2. The special-shaped pile with high bearing capacity according to claim 1, characterized in that: The slurry discharge pipe (21) is arranged obliquely, with the distance between the slurry discharge pipe (21) and the top end of the fixing portion (11) gradually increasing from top to bottom as a reference direction.

3. The special-shaped pile with high bearing capacity according to claim 1, characterized in that: The fixing portion (11) is provided with a plug-in slot (113) matching the outer shape of the connecting portion (12); a fixing ring (122) is connected to the surface of the connecting portion (12); and an installation step is provided at a position of the plug-in slot (113) corresponding to the fixing ring (122); when two adjacent pile segments (1) are installed, the connecting portion (12) on one pile segment (1) is plugged into the plug-in slot (113) of the other pile segment (1), and the top surface of the fixing ring (122) is flush with the top surface of the fixing portion (11).

4. The special-shaped pile with high bearing capacity according to claim 1, characterized in that: The connecting assembly (3) includes a connecting column (31), a fixing column (32), a limiting ring block (33) and a pressure spring (34), wherein the connecting column (31) is connected to a plurality of the bottoms of the connecting portion (12), the fixing column (32) is connected to the bottom ends of the connecting columns (31), the diameter of the fixing column (32) is larger than the diameter of the connecting column (31), and the fixing portion (11) is provided with a receiving groove (114) and a plurality of sliding grooves (115), wherein the receiving groove (114) The limiting ring block (33) is connected to the sliding groove (115), and the limiting ring block (33) is slidably fitted in the sliding groove (115). The limiting ring block (33) is provided with a contact annular surface for guiding the movement of the limiting ring block (33). The pressure spring (34) is provided in the sliding groove (115) and connected between the limiting ring block (33) and the end wall of the sliding groove (115). When installed, the limiting ring block (33) contacts the connecting column (31) and the fixed column (32).

5. The special-shaped pile with high bearing capacity according to claim 1, characterized in that: The connection portion (12) is provided with a mounting groove at a position corresponding to the outlet end of the slurry discharge pipe (21), and a retaining net (121) is connected in the mounting groove, and the retaining net (121) covers the outlet end of the slurry discharge pipe (21).

6. The special-shaped pile with high bearing capacity according to claim 1, characterized in that: A plurality of notched grooves (111) are formed on the surface of the fixing portion (11), and the notched grooves (111) are arranged vertically.

7. The special-shaped pile with high bearing capacity according to claim 6, characterized in that: A plurality of right-angle teeth (112) are connected in the notch groove (111), and the distance between the right-angle teeth (112) and the bottom wall of the notch groove (111) gradually decreases from top to bottom as a reference direction.

8. The special-shaped pile with high bearing capacity according to claim 1, characterized in that: A plurality of leaf plates (14) are connected between the fixing portion (11) and the connecting portion (12), and the leaf plates (14) are triangular plates.

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