Anti-settlement highway subgrade structure

Abstract

The invention discloses an anti-settlement highway subgrade structure, and relates to the technical field of highway subgrades, the anti-settlement highway subgrade structure comprises a soil base layer and a laying layer, an anti-settlement pile comprises an outer pipe and an inner pipe inserted in the outer pipe from top to bottom, the outer part of the outer pipe is provided with a connecting assembly connected with the inner pipe, and the lower end of the outer pipe is provided with a hollow tip; supporting and stabilizing assemblies are arranged in the multiple folding grooves correspondingly, an inner pile body is connected to the interior of the storage cavity in a sealed and sliding mode, the lower end of the inner pile body is connected with a tip end, a communicating assembly is arranged in the inner pile body, a plurality of extrusion pieces are arranged outside the tip end, and the interior of the storage cavity is filled with grouting materials. The anti-sedimentation pile can be laid more simply, conveniently, directly and efficiently, no extra operation needs to be temporarily carried out in the process of driving underground, the driving operation is completed at a time, a first curing layer and a second curing layer can be formed, the stability of the anti-sedimentation pile and a surrounding soil layer can be improved, and the service life of the anti-sedimentation pile is prolonged. The anti-settling effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of highway subgrade, in particular to an anti-settling highway subgrade structure. Background Art

[0002] Highways are a vital component of the modern transportation system, and highway subgrade is the foundation of tracks or roads. It is a geotechnical structure formed by excavation or filling. The main function of the subgrade is to provide necessary conditions for track or road paving and train or vehicle operation, and to withstand the static and dynamic loads of tracks and locomotives or roads and traffic loads. Therefore, the stability of the highway subgrade is crucial to traffic operation and safety. For the layout of highway subgrade in soft soil layers, the stability of the highway subgrade will be affected due to the characteristics of the soft soil layer. Therefore, higher requirements are placed on the stability of the highway subgrade in soft soil layers.

[0003] With the continuous development of my country's social economy, the number of highways is also increasing. However, when constructing existing highway subgrades, most of them are still constructed by using rollers to flatten the ground and laying asphalt on the ground to form a highway. However, after long-term use, this paving method will cause the highway subgrade to gradually sink or settle due to the rolling of heavier vehicles or the penetration and erosion of rainwater, resulting in depressions in the road surface and no longer being flat, thereby reducing the service life of the highway subgrade and posing certain safety hazards.

[0004] The prior art publication number is "CN 114808580 A construction method for anti-settling highway roadbed in soft soil area disclosed in the patent document of "B" includes the construction and laying of soft soil layer, anti-settling piles, crushed stone layer, sand and gravel layer, waterproof layer, concrete layer and asphalt layer. Although the highway roadbed laid by this method has the effect of improving the bearing capacity of the roadbed, thereby reducing the possibility of settlement of the roadbed and improving the durability of the roadbed, when laying the anti-settling piles, it is necessary to drill pile holes for laying the anti-settling piles in advance, and then the prefabricated anti-settling piles can be suspended and installed in the corresponding pile holes, and then compressed air needs to be filled in the anti-settling piles to drive the stabilizing nails for improving the anti-settling effect into the soil layer, and finally concrete needs to be poured in the pile holes and the anti-settling piles. It can be seen from the construction process of the above anti-settling piles that the laying process is relatively complicated, and some roadbeds will require more anti-settling piles when laying. The overly complicated laying work will undoubtedly greatly increase the workload of the roadbed construction, extend the construction period, and increase the construction cost, which is not conducive to the construction of the roadbed. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the present invention provides an anti-settling highway subgrade structure, which solves the problems raised in the background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-settling highway subgrade structure, comprising a soil base, wherein anti-settling piles are vertically inserted in the soil base, and a paving layer is laid on the soil base, the anti-settling piles comprise an outer tube and an inner tube inserted in the outer tube from top to bottom, the outer tube is provided with a connecting assembly connected to the inner tube on the outside, the lower end of the outer tube is provided with a tip with a hollow interior, the outer surface of the outer tube is provided with a plurality of folding grooves, the interiors of the plurality of folding grooves are provided with supporting and stabilizing assemblies that can be folded and unfolded, the upper end of the supporting and stabilizing assembly is connected to the inner tube, the interior of the inner tube is provided with a storage cavity, the interior of the storage cavity is sealed and slidably connected with an inner pile body, and the lower end of the inner pile body is connected to the tip;

[0009] A connecting component is provided inside the inner pile body, and the storage cavity is connected with the outer tube and the inside of the tip through the connecting component. A plurality of extrusions are provided outside the tip, and a flow groove is provided between the tip and the extrusions. Grouting material is filled inside the storage cavity.

[0010] Preferably, a ring-shaped limiting member is fixedly connected to the upper portion of the outer tube, and the inner tube penetrates and slides inside the limiting member.

[0011] Preferably, there are several connecting components, which are divergently distributed about the axis of the outer tube, and the connecting components include a fixing pin, a pressure rod, a pull rod and a fixing hole opened on the inner tube, the fixing pin is inserted into the tube wall of the outer tube, the fixing hole is adapted to the fixing pin and the two are plugged and fixed, the pressure rod is rotatably connected to the outside of the limit member through a rotating shaft, one end of the pull rod is rotatably connected to the pressure rod, and the other end is rotatably connected to the fixing pin.

[0012] Preferably, the supporting and stabilizing assembly includes a first support rod and a second support rod, one end of the first support rod is rotatably connected to the lower part of the folding groove through a rotating shaft, and the other end is hinged to one end of the second support rod through a hinge shaft, the other end of the second support rod abuts against the inner tube, and a plurality of through holes are opened on the second support rod.

[0013] Preferably, the connecting component includes a flow hole and a plurality of flow outlets, the flow hole is opened through the interior of the inner pile body along the length direction, the flow outlet is opened on the outer surface of the inner pile body and is connected with the flow hole, and the plurality of flow outlets are arranged in a divergent shape along the axis of the inner pile body, and the outside of the inner pile body is coated with a coating layer for sealing the flow hole and the outer end opening of the flow outlet.

[0014] Preferably, a threaded hole is provided on the outer surface of the inner tube near the folding groove, and the internal thread of the threaded hole is connected with a screw in contact with the upper end of the supporting and stabilizing component, and the screw is located inside the folding groove.

[0015] Preferably, the tip is conical in shape, and a support frame in contact with the inner pile body is provided inside the tip, a connecting hole is provided inside the support frame, and the flow hole is connected with the inside of the tip through the connecting hole.

[0016] Preferably, the anti-settling pile also includes an end cover, the outside of the end cover is provided with an external thread, the upper end of the inner tube is provided with a filling hole, the inner wall of the filling hole is provided with an internal thread matching the external thread, and the end cover is connected to the internal thread via the external thread.

[0017] Preferably, a sliding sealing ring is provided between the outer wall of the inner pile body and the inner wall of the inner tube.

[0018] Preferably, the paving layer includes a crushed stone layer, a sand and gravel layer, a waterproof layer, a concrete layer and an asphalt layer, the crushed stone layer is laid on the soil base layer, the sand and gravel layer is laid on the crushed stone layer, the waterproof layer is laid on the sand and gravel layer, the concrete layer is laid on the waterproof layer, and the asphalt layer is laid on the concrete layer.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention provides an anti-settling highway subgrade structure, which has the following beneficial effects:

[0021] 1. After the anti-settling pile is erected vertically and pressure is applied to the upper end of the inner tube by a pile driver, the purpose of driving the anti-settling pile into the ground can be achieved. Moreover, with the cooperation of the connecting component, the fixation between the outer tube and the inner tube can be automatically released, so that the inner tube can simultaneously drive the supporting and stabilizing components to unfold and insert into the ground to achieve the purpose of improving the anti-settling effect. Therefore, the laying of the anti-settling piles will be simpler, more convenient, more direct and more efficient. There is no need to pause and perform additional operations during the driving into the ground, so that the driving operation can be completed in one go. By reducing the complexity of the laying process, the construction workload can be effectively reduced, and the construction efficiency can be improved. At the same time, the construction cost will be reduced to a certain extent, which is beneficial to the construction of the roadbed.

[0022] 2. In the process of the pile driver driving the anti-settlement piles into the ground, the extrusion of the extrusion piece can not only form grooves in the soil layer, but also reduce the size of the gaps between the surrounding soils, increase the compactness of the surrounding soils, and help prevent the subsidence of the roadbed. Grouting materials will also be poured into the above-mentioned grooves to form a first solidified layer, which can improve the stability of the anti-settlement piles and the surrounding soil layers and play a certain anti-settlement effect. Moreover, the injection of grouting materials is also carried out simultaneously in the process of the anti-settlement piles being driven into the ground, and no additional grouting work is required. While improving the anti-settlement effect, it also further reduces the complexity of the anti-settlement pile laying work, making the roadbed laying work more efficient.

[0023] 3. In the process of supporting and stabilizing components outward and inserting them into the ground, cavities will be squeezed out, which can further improve the compactness of the surrounding soil. At the same time, a part of the grouting material will penetrate and fill the cavity, and form a second solidification layer together with the grouting material in the cavity. The second solidification layer can further improve the stability of the anti-settlement piles and the surrounding soil layers by combining with the anti-settlement piles and the soil, and play a good anti-settlement effect, which greatly improves the anti-settlement capacity of the surrounding soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view structural schematic diagram of the present invention;

[0025] Figure 2 It is a schematic diagram of the front view of the three-dimensional structure of the anti-settling pile of the present invention in the initial state;

[0026] Figure 3 It is a schematic diagram of the front cross-sectional structure of the anti-settling pile of the present invention in the initial state;

[0027] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0028] Figure 5 It is a schematic diagram of the exploded three-dimensional structure of the inner tube and the inner pile body in the anti-settling pile of the present invention;

[0029] Figure 6 It is a schematic diagram of the front three-dimensional structure of the tip of the anti-settling pile of the present invention;

[0030] Figure 7 This is a schematic diagram of the three-dimensional structure of the anti-settling pile of the present invention after being inserted into the ground;

[0031] Figure 8 It is a schematic diagram of a partial cross-sectional structure of the anti-settling pile of the present invention after being inserted into the ground;

[0032] Fig. 9 This is a schematic diagram of the cross-sectional structure of the anti-settling pile of the present invention after being inserted into the ground;

[0033] Fig.10 For the present invention Fig. 9 The enlarged structural diagram at B in the middle;

[0034] Fig.11 It is a schematic diagram of the perspective structure of the anti-settling pile of the present invention after being inserted into the ground.

[0035] In the figure: 1, soil base; 2, anti-settling pile; 201, outer tube; 2011, folding groove; 202, tip; 2021, flow groove; 2022, support frame; 2023, connecting hole; 203, inner tube; 2031, storage cavity; 2032, filling hole; 2033, threaded hole; 204, inner pile body; 2041, flow hole; 2042, outflow port; 2043, sliding sealing ring; 205, limiter; 206, end cover; 2061, outer Thread; 3. Laying layer; 301. Gravel layer; 302. Sand and gravel layer; 303. Waterproof layer; 304. Concrete layer; 305. Asphalt layer; 4. Connecting assembly; 401. Fixing pin; 402. Pressure rod; 403. Pull rod; 404. Fixing hole; 5. Support and stabilization assembly; 501. First support rod; 502. Second support rod; 5021. Through hole; 6. Screw; 7. Extrusion; 8. First solidified layer; 9. Second solidified layer; 10. Coating layer. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] Embodiment 1

[0041] The present invention provides an anti-settling highway subgrade structure: Figure 1 As shown, it includes a soil base layer 1, in which anti-settling piles 2 are vertically inserted, and a paving layer 3 is laid on the soil base layer 1, and the paving layer 3 includes a crushed stone layer 301, a sand and gravel layer 302, a waterproof layer 303, a concrete layer 304 and an asphalt layer 305, the crushed stone layer 301 is laid on the soil base layer 1, the sand and gravel layer 302 is laid on the crushed stone layer 301, the waterproof layer 303 is laid on the sand and gravel layer 302, the concrete layer 304 is laid on the waterproof layer 303, and the asphalt layer 305 is laid on the concrete layer 304;

[0042] like Figure 2 and Figure 3 As shown, the anti-settling pile 2 comprises an outer tube 201 and an inner tube 203 inserted into the outer tube 201 from top to bottom, the upper part of the outer tube 201 is fixedly connected with a ring-shaped plate-shaped stopper (205), the inner tube (203) penetrates and slides inside the stopper (205), and the outer part of the outer tube 201 is provided with a connecting assembly 4 connected to the inner tube 203;

[0043] like Figure 3 As shown, the number of the connecting components 4 is four, and the four connecting components 4 are distributed divergently with respect to the axis of the outer tube 201, and the connecting components 4 include a fixing pin 401, a pressure rod 402, a pull rod 403, and a fixing hole 404 opened on the inner tube 203, the fixing pin 401 is plugged into the tube wall of the outer tube 201, the fixing hole 404 is adapted to the fixing pin 401, and the two are plugged and fixed, in the initial state, the fixing pin 401 is plugged into the inside of the fixing hole 404, the pressure rod 402 is rotatably connected to the outside of the stopper 205 through a rotating shaft, one end of the pull rod 403 is rotatably connected to the pressure rod 402 through a rotating shaft, and the other end is rotatably connected to the fixing pin 401 through a rotating shaft;

[0044] like Figure 3 and Figure 5 As shown, the lower end of the outer tube 201 is provided with a tip 202 with a hollow interior, the outer surface of the outer tube 201 is provided with four folding grooves 2011, and the interiors of the plurality of folding grooves 2011 are provided with a foldable and unfoldable supporting and stabilizing component 5, the upper end of the supporting and stabilizing component 5 is connected to the inner tube 203, the interior of the inner tube 203 is provided with a storage cavity 2031, the interior of the storage cavity 2031 is sealed and slidably connected with an inner pile body 204, the lower end of the inner pile body 204 is connected to the tip 202, and a sliding sealing ring 2043 is provided between the outer wall of the inner pile body 204 and the inner wall of the inner tube 203;

[0045] A threaded hole 2033 is provided on the outer surface of the inner tube 203 near the folding groove 2011, and the internal thread of the threaded hole 2033 is connected with a screw 6 in contact with the upper end of the supporting and stabilizing component 5, and the screw 6 is located inside the folding groove 2011. When assembling the outer tube 201 and the inner tube 203, the inner tube 203 can be directly inserted into the outer tube 201 from the upper end of the outer tube 201, and it is ensured that the threaded hole 2033 corresponds to the folding groove 2011, and then the screw 6 can be screwed on the threaded hole 2033 through the folding groove 2011. The screw 6 is also pressed on the upper end of the supporting and stabilizing component 5. The cooperation between the screw 6 and the folding groove 2011 can prevent the inner tube 203 from being separated from the outer tube 201 during the transportation of the anti-settling pile 2. Moreover, the contact between the screw 6 and the upper end of the supporting and stabilizing component 5 can also play a certain fixing effect on the supporting and stabilizing component 5, preventing the supporting and stabilizing component 5 from being separated from the folding groove 2011 during the transportation and shaking. At the same time, such a setting will also facilitate the assembly between the inner tube 203 and the outer tube 201, which is beneficial to the production and manufacturing of the anti-settling pile 2.

[0046] like Figure 7 As shown, the supporting and stabilizing component 5 includes a first supporting rod 501 and a second supporting rod 502. One end of the first supporting rod 501 is rotatably connected to the lower part of the folding groove 2011 through a rotating shaft, and the other end is hinged to one end of the second supporting rod 502 through a hinge shaft. The other end of the second supporting rod 502 abuts against the inner tube 203, and a plurality of through holes 5021 are opened on the second supporting rod 502.

[0047] Working principle: After the soil base 1 is cleaned, leveled and compacted, the anti-settling pile 2 can be driven into the soil base 1 by a pile driver. The initial state of the anti-settling pile 2 is as follows: Figures 2 to 4As shown, the connection assembly 4 can be checked before driving into the ground to ensure that the fixing pin 401 on the outer tube 201 is firmly inserted into the fixing hole 404 on the inner tube 203, so as to ensure the stability of the connection between the inner tube 203 and the outer tube 201, and prevent the outer tube 201 and the inner tube 203 from sliding relative to each other during the insertion of the outer tube 201 into the ground. After the inspection is completed, the piling operation can be carried out;

[0048] When piling, the anti-settling pile 2 is erected vertically, and pressure is applied to the upper end of the inner tube 203 by a pile driver. During this process, the anti-settling pile 2 is gradually inserted into the soil base layer 1 through the tip 202 at the lower end. After being completely inserted into the ground, the limiter 205 will contact the upper surface of the soil base layer 1. At the same time, under the pressure of the upper surface of the soil base layer 1, the pressure rod 402 will be pressed to rotate upward around the rotating axis between it and the limiter 205 by a certain angle. During the rotation, the limiter 205 will pull the pull rod 403, and the pull rod 403 will then pull the fixing pin 401 outward to disengage the fixing pin 401 from the fixing hole 404. Fig.10 As shown, the fixation between the inner tube 203 and the outer tube 201 can be released, and then the pile driver continues to apply pressure to the inner tube 203. At this time, due to the restriction of the limiter 205, the outer tube 201 will stop inserting into the soil base 1, and the inner tube 203 will slowly insert into the inner part of the outer tube 201 and gradually sleeve on the outside of the inner pile body 204. In this process, the lower end of the inner tube 203 can squeeze the upper end of the second support rod 502, so that the hinge point between the first support rod 501 and the second support rod 502 can be extended outward, so that the first support rod 501 and the second support rod 502 are squeezed and unfolded, and extend from the folding groove 2011 to be inserted into the surrounding soil, as shown in the figure. Figure 1 as well as Figures 7 to 9 As shown, the entire piling operation of the anti-settling pile 2 can be completed until the inner tube 203 is inserted into the outer tube 201. After the piling operation is completed, the crushed stone layer 301, the sand and gravel layer 302, the waterproof layer 303, the concrete layer 304 and the asphalt layer 305 can be laid in sequence. This method of laying the anti-settling pile 2 no longer requires additional drilling on the soil base layer 1, nor does it require additional filling of compressed gas into the anti-settling pile 2, so that the laying of the anti-settling pile 2 can be completed. At the same time, with the cooperation of the connecting component 4, the fixation between the outer tube 201 and the inner tube 203 can be automatically released, so that the inner tube 203 can drive the supporting and stabilizing component 5 to unfold and insert into the ground to achieve the purpose of improving the anti-settling effect. Therefore, the laying of the anti-settling pile 2 can be made simpler and more convenient, reducing the complexity of the laying process, so that the anti-settling pile 2 can be driven in one go without any additional operation.

[0049] Embodiment 2

[0050] The present invention provides an anti-settling highway subgrade structure: Figure 5As shown, the anti-settling pile 2 also includes an end cap 206, the outer portion of the end cap 206 is provided with an external thread 2061, the upper end of the inner tube 203 is provided with a filling hole 2032, the inner wall of the filling hole 2032 is provided with an internal thread matched with the external thread 2061, and the end cap 206 is connected to the internal thread through the external thread 2061;

[0051] like Figure 3 , Figure 5 as well as Fig. 9 As shown, a connecting component is provided inside the inner pile body 204, and the storage cavity 2031 is connected with the inner part of the outer tube 201 and the tip 202 through the connecting component, and the connecting component includes a flow hole 2041, and the flow hole 2041 is provided inside the inner pile body 204 along the length direction;

[0052] like Figure 3 and Figure 6 As shown, the tip 202 is conical in shape, and a support frame 2022 in contact with the inner pile body 204 is provided inside the tip 202, a connecting hole 2023 is provided inside the support frame 2022, and the flow hole 2041 is connected with the inside of the tip 202 through the connecting hole 2023;

[0053] Four extrusions 7 are provided outside the tip 202. The extrusions 7 are made of angle steel and are welded to the outer surface of the tip 202 in an inclined state, and one end of the extrusion 7 is ensured to extend outward to the outside of the tip 202. Figure 6 As shown, a flow groove 2021 is provided between the tip 202 and the extrusion piece 7, and the interior of the storage cavity 2031 is filled with grouting material, which is made of polyurethane slurry, polymer slurry and other materials with good soil reinforcement effect and strong permeability.

[0054] Working principle: before laying the anti-settling pile 2, the end cap 206 can be unscrewed from the inner tube 203, and then the grouting material can be filled into the storage cavity 2031 through the filling hole 2032. The grouting material entering the storage cavity 2031 can flow into the flow hole 2041. After the storage cavity 2031 is filled, the end cap 206 can be tightened into the filling hole 2032, so as to ensure the sealing of the filling hole 2032;

[0055] Then, when the pile driver drives the outer tube 201 into the ground, the extrusion piece 7 outside the tip 202 will extrude four grooves in the soil base 1 along the vertical direction on the outer periphery of the anti-settling pile 2, and each groove is located between two adjacent supporting and stabilizing components 5. During the extrusion process of the extrusion piece 7, the size of the gap between the surrounding soil can be reduced, and the compactness of the surrounding soil can be improved, which is helpful for preventing the subsidence of the roadbed. When the outer tube 201 stops moving downward and the inner tube 203 is slowly inserted into the outer tube 201, the inner tube 203 will also slowly be sleeved on the inner pile body 204, thereby compressing the space of the storage chamber 2031. At this time, the grouting material in the storage chamber 2031 can enter the tip 202 through the circulation hole 2041 and the connecting hole 2023, and finally be filled into the four grooves formed by the extrusion piece 7 through the circulation groove 2021 to form a first solidified layer 8. Fig.11 As shown, grouting material is filled on the periphery of the anti-settlement pile 2. After the grouting material solidifies, the first solidified layer 8 can improve the stability of the anti-settlement pile 2 and the surrounding soil layer by combining with the anti-settlement pile 2 and the soil, thereby achieving a certain anti-settlement effect. Moreover, the filling of the grouting material is also carried out simultaneously during the process of the anti-settlement pile 2 being driven into the ground, and no additional grouting work is required.

[0056] Embodiment 3

[0057] The present invention provides an anti-settling highway subgrade structure: Figure 3 As shown, the connecting component includes a circulation hole 2041 and a plurality of flow outlets 2042. The circulation hole 2041 penetrates through the interior of the inner pile body 204 along the length direction. The flow outlets 2042 are opened on the outer surface of the inner pile body 204 and are connected with the circulation hole 2041. The plurality of flow outlets 2042 are arranged in a divergent shape along the axis of the inner pile body 204. The outside of the inner pile body 204 is coated with a coating layer 10 for sealing the circulation hole 2041 and the outer end opening of the flow outlet 2042. The material of the coating layer 10 can be a plastic film, oil paper or other materials.

[0058] Working principle: When the grouting material is added into the storage cavity 2031 through the filling hole 2032, the grouting material can also flow into the outlet 2042 through the circulation hole 2041, and the grouting material is blocked in the circulation hole 2041 and the outlet 2042 under the blocking effect of the coating layer 10;

[0059] Moreover, when the inner tube 203 is inserted into the outer tube 201 so that the storage cavity 2031 flows outward, the grouting material will break through the coating layer 10 blocking the outside of the outflow port 2042 by its own pressure and flow out to fill the gap between the outer wall of the inner pile body 204 and the inner wall of the outer tube 201 and the gap between the outer wall of the inner pile body 204 and the inner wall of the inner tube 203, ensuring that there is no cavity inside the entire anti-settling pile 2;

[0060] Furthermore, in the process of the supporting and stabilizing component 5 being propped up outward and inserted into the ground, a cavity will be squeezed out in the soil layer between the first supporting rod 501, the second supporting rod 502 and the outer tube 201. In this process, the compactness of the surrounding soil can be further improved, and a part of the grouting material flowing out through the outflow port 2042 will also flow out through the folding groove 2011 into the cavity squeezed out by the supporting and stabilizing component 5 and fill the cavity. A part of the grouting material will also continue to penetrate into the external soil through the through hole 5021 on the second supporting rod 502 and form a second solidified layer 9 together with the grouting material in the cavity. Figure 1 and Figure 8 As shown, after the grouting material is solidified, the second solidified layer 9 can further improve the stability of the anti-settling pile 2 and the surrounding soil layer by combining with the anti-settling pile 2 and the soil, and play a good anti-settling effect.

[0061] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-settlement highway roadbed structure, comprising a soil base layer (1), wherein anti-settlement piles (2) are vertically inserted into the soil base layer (1), and a paving layer (3) is laid on the soil base layer (1), characterized in that: The anti-sinking pile (2) comprises an outer tube (201) and an inner tube (203) inserted into the outer tube (201) from top to bottom, the outer tube (201) is provided with a connecting component (4) connected to the inner tube (203) on the outside, the lower end of the outer tube (201) is provided with a tip (202) with a hollow interior, the outer surface of the outer tube (201) is provided with a plurality of folding grooves (2011), the interiors of the plurality of folding grooves (2011) are provided with a foldable and unfoldable supporting and stabilizing component (5), the upper end of the supporting and stabilizing component (5) is connected to the inner tube (203), the interior of the inner tube (203) is provided with a storage cavity (2031), the interior of the storage cavity (2031) is sealed and slidably connected with an inner pile body (204), and the lower end of the inner pile body (204) is connected to the tip (202); A connecting component is provided inside the inner pile body (204), and the storage cavity (2031) is connected with the outer tube (201) and the inside of the tip (202) through the connecting component. A plurality of extrusion pieces (7) are provided outside the tip (202), and a flow groove (2021) is provided between the tip (202) and the extrusion piece (7). Grouting material is filled inside the storage cavity (2031).

2. The anti-settling highway subgrade structure according to claim 1 is characterized by: An annular plate-shaped limiting member (205) is fixedly connected to the upper portion of the outer tube (201), and the inner tube (203) penetrates and slides inside the limiting member (205).

3. The anti-settling highway subgrade structure according to claim 2 is characterized by: There are a plurality of connection components (4), and the plurality of connection components (4) are distributed divergently about the axis of the outer tube (201), and the connection components (4) include a fixing pin (401), a pressure rod (402), a pull rod (403), and a fixing hole (404) provided on the inner tube (203), wherein the fixing pin (401) is plugged into the tube wall of the outer tube (201), the fixing hole (404) is adapted to the fixing pin (401), and the two are plugged and fixed, the pressure rod (402) is rotationally connected to the outside of the limiter (205) via a rotating shaft, one end of the pull rod (403) is rotationally connected to the pressure rod (402), and the other end is rotationally connected to the fixing pin (401).

4. The anti-settling highway subgrade structure according to claim 1 is characterized by: The supporting and stabilizing assembly (5) comprises a first supporting rod (501) and a second supporting rod (502); one end of the first supporting rod (501) is rotatably connected to the lower part of the folding groove (2011) via a rotating shaft, and the other end is hinged to one end of the second supporting rod (502) via a hinge shaft; the other end of the second supporting rod (502) is in contact with the inner tube (203), and a plurality of through holes (5021) are provided on the second supporting rod (502).

5. The anti-settling highway subgrade structure according to claim 1 is characterized by: The connecting component comprises a circulation hole (2041) and a plurality of flow outlets (2042), wherein the circulation hole (2041) is opened through the interior of the inner pile body (204) along the length direction, the flow outlets (2042) are opened on the outer surface of the inner pile body (204) and are connected with the circulation hole (2041), and the plurality of flow outlets (2042) are arranged in a divergent shape along the axis of the inner pile body (204), and the outer part of the inner pile body (204) is coated with a coating layer (10) for sealing the circulation hole (2041) and the outer end opening of the flow outlet (2042).

6. The anti-settling highway subgrade structure according to claim 1 is characterized by: A threaded hole (2033) is provided on the outer surface of the inner tube (203) near the folding groove (2011), and the internal thread of the threaded hole (2033) is connected to a screw (6) in contact with the upper end of the supporting and stabilizing component (5), and the screw (6) is located inside the folding groove (2011).

7. The anti-settling highway subgrade structure according to claim 5, characterized in that: The tip (202) is conical in shape, and a support frame (2022) in contact with the inner pile body (204) is provided inside the tip (202), a connecting hole (2023) is provided inside the support frame (2022), and the flow hole (2041) is connected to the inside of the tip (202) through the connecting hole (2023).

8. The anti-settling highway subgrade structure according to claim 1 is characterized by: The anti-settling pile (2) further comprises an end cover (206), the exterior of the end cover (206) is provided with an external thread (2061), the upper end of the inner tube (203) is provided with a filling hole (2032), the inner wall of the filling hole (2032) is provided with an internal thread matching the external thread (2061), and the end cover (206) is connected to the internal thread via the external thread (2061).

9. The anti-settling highway subgrade structure according to claim 1, characterized in that: A sliding sealing ring (2043) is provided between the outer wall of the inner pile body (204) and the inner wall of the inner tube (203).

10. The anti-settling highway subgrade structure according to claim 1, characterized in that: The paving layer (3) comprises a crushed stone layer (301), a sand and gravel layer (302), a waterproof layer (303), a concrete layer (304) and an asphalt layer (305); the crushed stone layer (301) is laid on the soil base layer (1); the sand and gravel layer (302) is laid on the crushed stone layer (301); the waterproof layer (303) is laid on the sand and gravel layer (302); the concrete layer (304) is laid on the waterproof layer (303); and the asphalt layer (305) is laid on the concrete layer (304).

Images