Intelligent anti-settling structure for soft soil foundation

Abstract

The present application relates to soft soil foundation intelligent anti-settlement structure, the present application effectively solves the problem that the roadbed is easy to collapse to both sides and further produces settlement when building road in soft soil area, the technical scheme for solving includes: the pile body assembly is arranged equidistantly along the extension direction of the length of the roadbed and is connected through the connecting part between the two adjacent pile body assemblies; The pile body assembly includes reinforcing cylinders arranged at intervals along the width direction of the roadbed, and the reinforcing cylinders are provided with anchor assemblies; The reinforcing cylinders at the two sides of the roadbed and the corresponding positions are provided with suction cylinders, the two sides of the suction cylinder are respectively provided with suction cavities, and the suction cavities are provided with suction assemblies; The two suction cavities are communicated with a suction pipe on the side facing each other; When the vertical bearing capacity of the roadbed is insufficient, the collapse of the soft soil area on both sides can be better inhibited, the stability and supportability of the roadbed are ensured, and the water in the foundation under the road surface is extracted simultaneously by the force generated during the collapse process of the roadbed, so as to improve the compactness of the roadbed.

Description

Technical Field

[0001] This invention relates to the field of soft soil foundation anti-settlement technology, and in particular to intelligent anti-settlement structures for soft soil foundations. Background Technology

[0002] Soft soil foundation is a foundation composed of soft soil. Its soil composition is mainly soft soil. Soft soil refers to the soil mainly composed of fine-grained soil, such as coastal facies, deltaic facies, river facies, lacustrine facies, and swamp facies in inland plains or mountains. It is characterized by high porosity, high natural water content, high compressibility, and low strength. Due to the low strength and large settlement of soft soil, under the action of external loads, soft soil foundation is prone to subsidence, collapse, instability, and cracking, which can cause great harm to road engineering.

[0003] Currently, common treatment methods used in road construction in soft soil areas include drainage consolidation, soil replacement, dynamic compaction, and pile foundation methods, which are used to improve the bearing capacity and stability of soft soil foundations. However, these methods only treat and reinforce the foundation below the road surface (to improve its bearing capacity). There are still a large number of soft soil areas on both sides of the road foundation. After the road is put into use, the additional load generated by the frequent traffic on the road surface and the self-weight of the roadbed cause the roadbed to bear a large vertical load.

[0004] If the filling and compaction operations are not up to standard during road construction, resulting in roadbed instability, when the unstable area is subjected to a large vertical load, the roadbed will be squeezed into the soft soil areas on both sides due to insufficient vertical support (the soft soil areas on both sides of the roadbed have a small lateral support force on the roadbed). This will cause the soil in the roadbed to collapse into the soft soil areas on both sides, resulting in the soft soil areas on both sides of the road foundation bulging upwards, causing the pavement layer to collapse or crack, affecting the service life of the road. The above situation often occurs in the initial period after the road is put into use.

[0005] In view of this, this solution provides an intelligent anti-settlement structure for soft soil foundations to address the aforementioned problems. Summary of the Invention

[0006] This invention provides an intelligent anti-settlement structure for soft soil foundations. This structure can provide better support and constraint for the roadbed. When the roadbed has insufficient vertical bearing capacity, it can effectively inhibit the collapse of the roadbed into the soft soil areas on both sides, ensuring the stability and support of the roadbed. At the same time, with the force generated by the collapse process of the roadbed, the water in the foundation below the road surface is simultaneously extracted to improve the compaction of the roadbed.

[0007] A smart anti-settlement structure for soft soil foundation, including a roadbed, characterized in that pile components are arranged at equal intervals along the length extension direction of the roadbed and adjacent pile components are connected by a connecting part;

[0008] The pile assembly includes reinforcing cylinders spaced apart along the width of the roadbed and anchoring components inside the reinforcing cylinders. A suction cylinder is provided between the reinforcing cylinders located on both sides of the roadbed and at corresponding positions. A suction chamber is provided on both sides of the suction cylinder and a suction component is provided inside the suction chamber. A suction pipe is connected to the opposite side of the two suction chambers.

[0009] The suction assembly is fixedly connected to the outer wall of the corresponding reinforcing cylinder via steel cables;

[0010] One-way valves are provided on opposite sides of the two suction chambers.

[0011] The beneficial effects of the above technical solution are as follows:

[0012] (1) This structure can provide good support and constraint for the roadbed. When the roadbed has insufficient vertical bearing capacity, it can effectively suppress the collapse to the soft soil areas on both sides, thus ensuring the stability and vertical support of the roadbed.

[0013] (2) In this scheme, when the roadbed collapses to the soft soil areas on both sides, the force generated during the roadbed collapse process is used to simultaneously extract water from the foundation below the road surface (in order to reduce the water content in the soil layer), thereby increasing the compactness of the roadbed. At the same time, a certain amount of cementing agent is injected into the soil layer inside the roadbed to play the role of cementing and filling the soil pores, thereby improving the strength and bearing capacity of the soil layer.

[0014] (3) As the road is put into use for a longer period of time, the road will collapse to varying degrees. When the cementing agent is used up, the water extracted from the soil layer is mixed with the pre-stored sodium silicate (to form a cementing agent) and injected into the soil layer. This achieves the effect of transferring the water extracted from the soil layer back into the soil layer and mixing it with sodium silicate to achieve the effect of soil articulation and filling soil pores. Attached Figure Description

[0015] Figure 1 This is a top view of the roadbed structure of the present invention;

[0016] Figure 2 This is a schematic diagram showing the positional relationship between the pile hole, the foundation pit, and the receiving pit in this invention;

[0017] Figure 3 This is a schematic diagram showing the connection relationship between two adjacent reinforcing cylinders in this invention;

[0018] Figure 4 This is a schematic diagram of the anchoring component structure of the present invention;

[0019] Figure 5 This is a schematic diagram of the overall structure of the suction cylinder of the present invention;

[0020] Figure 6 For the present invention Figure 5 Schematic diagram of the section AA after cross-section;

[0021] Figure 7 For the present invention Figure 5 Schematic diagram of the BB section after cross-section;

[0022] Figure 8 This is a schematic cross-sectional view of the AA section of the present invention in another state;

[0023] Figure 9 This is a schematic diagram showing the distribution and positional relationship of the suction cylinder and the reinforcing cylinder of the present invention. Detailed Implementation

[0024] The foregoing and other technical contents, features and effects of the present invention are described in conjunction with the appendix below. Figures 1 to 9 As will be clearly shown in the detailed description of the embodiments, the structural contents mentioned in the following embodiments are all based on the accompanying drawings.

[0025] Example 1: This example provides an intelligent anti-settlement structure for soft soil foundations to improve the bearing capacity of roadbeds in soft soil areas. Currently, common treatment methods used in the construction of roads in soft soil areas include drainage consolidation, soil replacement, dynamic compaction, and pile foundation methods to improve the bearing capacity and stability of soft soil foundations. However, the above methods only treat and reinforce the foundation below the road surface (to improve its bearing capacity). There are still a large number of soft soil areas in the areas on both sides of the road foundation. After the road is put into use, the additional load generated by the frequent traffic on the road surface and the self-weight of the roadbed cause the roadbed to bear a large vertical load.

[0026] If the filling and compaction operations are not up to standard during road construction, resulting in an unstable roadbed, when the unstable area is subjected to a large vertical load, the roadbed soil layer will tend to collapse to both sides when subjected to a large vertical load, which will then exert a large compressive force on the soft soil area on both sides. This will cause the roadbed to be squeezed into the soft soil area on both sides (the soft soil area on both sides of the roadbed has a small lateral support force on the roadbed), which will cause the soil in the roadbed to collapse to the soft soil area on both sides (the roadbed collapses to the soft soil area on both sides, which will cause the roadbed to settle downwards). This will cause the soft soil area on both sides of the road foundation to bulge upwards, causing the pavement layer to collapse or crack, affecting the service life of the road.

[0027] The aforementioned situations tend to occur more frequently, especially during the initial stages of road use. As the road is put into use, the roadbed gradually stabilizes, and the degree of collapse and settlement gradually decreases. Furthermore, vehicle traffic compacts the roadbed, increasing its soil density and thus its vertical bearing capacity. Therefore, roadbed maintenance is crucial during the initial period of road use. In light of this, this solution provides an intelligent anti-settlement structure for soft soil foundations, as detailed below:

[0028] like Figure 2 As shown, foundation pits are excavated in advance on both sides of the foundation in the direction of road extension, and pile holes are excavated at intervals in the foundation pits. A receiving pit is excavated between two corresponding pile holes. The pile assembly in this scheme includes reinforcing cylinders 1 arranged at intervals along the length of the roadbed, and adjacent reinforcing cylinders 1 are connected by a connecting part (e.g., ...). Figure 3 As shown), an anchoring assembly is provided inside the reinforcing cylinder 1 to enhance the connection performance between the reinforcing cylinder 1 and the surrounding soil layer (improving its stability) after the reinforcing cylinder 1 is hoisted into the pile hole. A suction cylinder 2 is provided in the receiving pit between the two reinforcing cylinders 1, and the suction cylinder 2 is provided with two suction chambers 3 (as shown). Figure 6 As shown), each suction chamber 3 is equipped with a suction assembly, and a suction tube 4 is connected to the opposite side of the two suction chambers 3, as shown. Figure 1 As shown, the suction assembly is fixedly connected to the outer wall of the corresponding reinforcing cylinder 1 via steel cable 8. A one-way valve 5 is provided on the opposite side of the two suction chambers 3. In specific use, the process is as follows:

[0029] First, the construction workers excavated the corresponding foundation pits, pile holes, and receiving trenches on the roadbed (Note: the above roadbed is a roadbed that has been reinforced, such as by drainage reinforcement, soil replacement, dynamic compaction, etc.). Then, the reinforcement cylinder 1 was hoisted into the pile hole in sequence. Then, the connecting part was hoisted into the foundation pit between two adjacent pile holes and fixedly connected to the side wall of the reinforcement cylinder 1. Then, the movement of the anchoring component set in the reinforcement cylinder 1 was controlled so that it extended outward from the reinforcement cylinder 1 and inserted into the soil around the reinforcement cylinder 1 (when hoisting the reinforcement cylinder 1, the anchoring component retracted into the reinforcement cylinder 1) to improve the stability of the reinforcement cylinder 1. Then, concrete was poured into the reinforcement cylinder 1 to fill it. This completed the installation process of the reinforcement cylinder 1 and the connecting part.

[0030] Then, a certain amount of soil is backfilled into the receiving pit and compacted. Then, the suction cylinder 2 is placed into the receiving pit. Figure 9As shown in the diagram, the suction cylinder 2 is positioned in the middle of two adjacent reinforcing cylinders 1. Then, one end of the steel cable 8 is connected to the outer wall of the reinforcing cylinder 1 (an embedded part is installed on the outer wall of the reinforcing cylinder 1 to achieve a fixed connection with the steel cable 8). The other end of the steel cable 8 is connected to the corresponding suction assembly. After the suction cylinder 2 is installed in place, backfill soil into the receiving pit until it is level with the roadbed, and then compact the backfill soil. Subsequently, a waterproof layer, a concrete layer, and an asphalt pavement layer (such as...) are laid sequentially on the roadbed. Figure 9 (as shown), thereby completing the road construction work;

[0031] In the initial stage of road use, due to substandard treatment of some roadbed sections during road construction, the vertical bearing capacity of the soil layer at these roadbed locations is insufficient. Consequently, under the load of frequent vehicle traffic, the roadbed collapses to both sides, leading to settlement (the soft soil areas on both sides of the roadbed provide insufficient lateral support). The insufficient vertical bearing capacity of the roadbed, coupled with significant vertical loads, causes the roadbed soil layer to exert increasing pressure on the soft soil areas on both sides. When the soft soil areas on both sides can no longer provide sufficient lateral support, the roadbed soil layer begins to collapse towards the soft soil areas on both sides, resulting in roadbed settlement. In this embodiment, the use of a matching reinforcing cylinder 1, a connecting part, and steel cables 8 and suction cylinders 2 connecting adjacent reinforcing cylinders 1 can effectively constrain the soft soil roadbed located between the connecting parts (e.g., Figure 2 As shown), when the roadbed located between the connecting parts collapses to both sides, the cooperation between the reinforcing cylinder 1, the connecting part, and the steel cable 8 can provide a certain restraining force to suppress the collapse of the roadbed to the soft soil area on both sides, thereby avoiding the degree of roadbed settlement and to a certain extent shifting the settlement process of the roadbed.

[0032] As the road has been in use for a longer period, the number of vehicles passing through has increased, further exacerbating the collapse of the aforementioned subgrade (some of which did not meet standards) to both sides (with a corresponding increase in pavement settlement). When the soil layer in the subgrade collapses towards the soft soil areas on both sides, it first compresses the soft soil areas on both sides of the subgrade through the connecting parts and reinforcement cylinder 1 located on both sides. Figure 9As shown, the connecting part and the reinforcing cylinder 1, which are close to the ground surface, receive the least lateral support from the soft soil areas on both sides of the roadbed (the closer to the ground surface, the thinner the soft soil layer on both sides of the roadbed, and the smaller the lateral support force that can be applied to the connecting part and the reinforcing cylinder 1). Therefore, the parts of the reinforcing cylinder 1 and the connecting part that are close to the ground surface begin to be squeezed towards the soft soil areas on both sides and tilt to a certain extent. As the reinforcing cylinder 1 tilts to both sides, a certain force is applied to the suction component inside the suction cylinder 2 through the steel cable 8. Through the cooperation of the suction component and the suction pipe 4, water in the roadbed soil layer is pumped into the suction chamber 3 (reducing the water content in the roadbed soil layer, making the soil consolidate, and increasing the soil mass). (Regarding the density and stability of the road), it is worth noting that after the road is put into use, rainwater generated by natural rainfall will seep downwards from the roadbed surface into the roadbed soil layer (although a waterproof layer is provided, it is inevitable that some rainwater will seep downwards into the roadbed soil layer; the waterproof layer can only reduce the degree of rainwater seepage, not completely prevent it), thereby increasing the water content in the roadbed soil layer and reducing the bearing stability of the roadbed soil layer. In addition, through the matching reinforcement cylinder 1 and connecting part, water in the soft soil area on both sides of the roadbed is also isolated, which effectively prevents water in the soft soil on both sides of the roadbed from seeping into the roadbed soil layer (reducing the water content in the roadbed soil layer to the greatest extent).

[0033] It is worth noting that as the suction assembly draws water from the subgrade soil layer into the suction chamber 3 through the suction pipe 4 under the tension of the steel cable 8, the gas originally located in the suction chamber 3 is discharged through several one-way valves 5 located on opposite sides of the two suction chambers 3, in order to cooperate with the work of the suction assembly in the suction chamber 3 (to extract water from the subgrade soil layer).

[0034] Example 2, based on Example 1, such as Figure 6 As shown, the suction assembly includes a suction piston 6 disposed within the suction chamber 3 (the suction piston 6 is integrally and coaxially provided with a piston rod 7, and the piston rod 7 extends outward from one end of the suction cylinder and is fixedly connected to a steel cable 8). A force-bearing spring 9 is connected between the two suction pistons 6 facing each other and the wall of the suction chamber 3. Initially, the suction pistons 6 are in a state of tension under the action of the force-bearing spring 9 connected to them. Figure 6 Position E (where the spring 9 is in its natural extension state), as Figure 7 The suction pipe 4 is provided with a plurality of suction holes 10 evenly distributed and the suction holes 10 are covered with a layer of sponge 11. The sponge 11 is used to filter the water entering the suction chamber 3 to prevent soil particles from entering the suction chamber 3. On the other hand, it is used to prevent soil particles from clogging the suction holes 10 during the suction process.

[0035] like Figure 9As shown, when the connecting parts and reinforcing cylinder 1 located on both sides are subjected to lateral extrusion force from the subgrade soil layer and tilt to both sides, the piston rod 7 will be driven by the steel cable 8 and the suction piston 6 will be pulled to move within the suction chamber 3. This causes the force spring 9 connected to the suction piston 6 to be stretched and store energy. During this process, the reaction force applied by the force spring 9 to the piston rod 7 and the steel cable 8 provides a certain degree of constraint force to the connecting parts and reinforcing cylinder 1 on both sides, thereby reducing the degree of tilting to both sides and thus reducing the degree of collapse of the subgrade soil layer to both sides (reducing the settlement rate of the subgrade soil layer).

[0036] Example 3, based on Example 1, such as Figure 4 As shown, vertically extending limiting grooves 12 are provided on both axial sides of the reinforcing cylinder 1, and the connecting part includes a limiting frame 13 that is vertically slidably installed with the limiting grooves 12, such as... Figure 3 As shown, the two adjacent limiting frames 13 located on both sides of the roadbed are connected and fixed by a cast-in-place component. The specific cast-in-place component includes steel bars connecting the two adjacent limiting frames 13. In this embodiment, the specific operation process is as follows:

[0037] After the construction workers hoist the reinforcing cylinder 1 into the corresponding pile hole, they then prepare two limiting frames 13 and fix reinforcing bars between them (by welding or wire binding). At this point, the two limiting frames 13 and the reinforcing bars between them form a single unit. The construction workers then place this unit into the foundation pit between two adjacent reinforcing cylinders 1, allowing the two limiting frames 13 to slide downwards along the corresponding limiting grooves 12 located on both sides of the axial direction of the reinforcing cylinder 1, until they reach the designated position (e.g., ...). Figure 3 (as shown in the figure) At this time, the initial connection and fixation between the two adjacent reinforcing cylinders 1 are achieved. Then, the construction workers pour concrete into the foundation pit. After the concrete solidifies, the connection and fixation between the two adjacent reinforcing cylinders 1 are finally achieved. The solidified concrete, steel bars, and two limiting frames 13 constitute the connection part (pouring component).

[0038] Example 4, based on Example 3, as follows Figure 4As shown, the anchoring assembly includes several anchoring units vertically spaced within the reinforcing cylinder 1. Each anchoring unit includes anchoring rods 14 spaced around and slidably installed within the reinforcing cylinder 1 (the outer end of the anchoring rod 14 is cone-shaped to facilitate its replacement and insertion into the subgrade soil layer). A trigger plate 15 is slidably installed coaxially within the wall of the reinforcing cylinder 1, with one end of the trigger plate 15 placed in a limiting groove 12 (the other end of the trigger plate 15 is connected to the reinforcing cylinder 1 by a spring). The upper end of the trigger plate 15, located within the limiting groove 12, has a rounded corner. The trigger plate 15 drives the corresponding anchoring rods 14 to move via a transmission assembly located within the reinforcing cylinder 1. Initially, the anchoring rods 14 retract within the reinforcing cylinder 1 without hindering the hoisting of the reinforcing cylinder 1. In specific implementation, the process is as follows:

[0039] Construction workers will install two retaining frames 13 (fixed together by steel bars), then align each retaining frame 13 with its corresponding retaining groove 12, and then move the retaining frame 13 downwards (so that the retaining frame 13 slides down into the pit along its corresponding retaining groove 12). Figure 4 As shown, the bottom ends of the limiting frame 13 are also rounded. When the limiting frame 13 moves downward along the limiting groove 12 and contacts the rounded corners of the trigger plate 15 extending into the limiting groove 12, the contact between the two rounded corners forces the trigger plate 15 to move away from the limiting groove 12. Figure 4 As shown, as the trigger plate 15 moves, it drives the corresponding anchor rod 14 to extend out of the reinforcing cylinder 1 synchronously through the transmission assembly, and finally inserts it into the soil near the reinforcing cylinder 1 (to improve the stability of the reinforcing cylinder 1).

[0040] This embodiment provides a specific structure of a transmission component, such as... Figure 4 As shown, the outer wall of the trigger plate 15 is provided with several gears, and the gears mesh with a small gear rotatably installed inside the wall of the reinforcing cylinder 1. The small gear rotates coaxially with a large gear, and the large gear meshes with several gears provided on the anchor rod 14. When the rounded corner of the trigger plate 15 is squeezed by the rounded corner of the limiting frame 13, the rounded corner of the trigger plate 15 will gradually retract from the limiting groove 12. As the trigger plate 15 moves, it synchronously drives the small gear and the large gear to rotate (e.g., Figure 4 As shown in the lower right view, the dashed arrows point to the moving directions of the trigger plate 15, the gear, and the anchor rod 14, respectively. That is, when the trigger plate 15 exits from the limiting groove 12, it drives the gear to rotate, thereby synchronously driving the anchor rod 14 to extend out of the reinforcing cylinder 1 (until it is inserted into the surrounding soil).

[0041] Several anchoring units are spaced apart along the length of the reinforcing cylinder 1. As the limiting frame 13 slides down the limiting groove 12, the rounded corners at the bottom of the limiting frame 13 and the rounded corners of the trigger plate 15 extending into the limiting groove 12 continuously compress each other, forcing the anchoring rods 14 at different heights to insert into the surrounding soil. This continues until the limiting frame 13 slides into the lowest position along the limiting groove 12, at which point the installation of the limiting frame 13 is complete. Subsequently, concrete is poured into the reinforcing cylinder 1 and the foundation pit (e.g., concrete is poured into the foundation pit). Figure 1 As shown, the connection between two adjacent reinforced cylinders 1 is achieved through the limiting frame 13, steel bars, and poured concrete. The next construction process can only be carried out after the concrete has solidified.

[0042] Example 5, based on Example 2, makes further optimizations, such as... Figure 6 As shown, the specific details are as follows: Water glass is stored in the suction chamber 3 on the side of the suction piston 6 away from the force spring 9. The water glass is an aqueous solution of sodium silicate (since sodium silicate is alkaline when dissolved in water, the suction cylinder 2, suction piston 6, and pouring pipe 16 in this embodiment can be made of stainless steel. Stainless steel has good resistance to alkali corrosion and good rust prevention, allowing the suction cylinder 2 to be well preserved within the subgrade soil layer). It is an adhesive; when injected into the soil, it generates silica gel (increasing the vertical compressive strength of the soil), thereby consolidating the soil (acting as a binder and filling pores, increasing the soil's strength and bearing capacity, often used for foundation reinforcement), improving the soil's bearing stability. Pouring pipes 16 are connected to the opposite sides of the two suction chambers 3, and one-way valves 5 are evenly distributed on the outer wall of the pouring pipes 16. The specific implementation process in this embodiment is as follows:

[0043] Before installing the suction cylinder 2, a certain amount of water glass (an aqueous solution of sodium silicate) is first stored in the suction chamber 3, located on the side of the suction piston 6 away from the force spring 9. When the soil in a certain part of the subgrade collapses to both sides and squeezes the reinforcement cylinder 1 and the connecting part, the suction piston 6 is moved in the suction chamber 3 in the direction of the tension force spring 9 through the steel cable 8. On the one hand, this allows water in the subgrade soil to be drawn into the suction chamber 3 (reducing the moisture content in the subgrade soil). On the other hand, as the suction piston 6 moves in the suction chamber 3, water in the suction chamber 3 is simultaneously drawn into the suction chamber 3. The water glass is squeezed out through the pouring pipe 16 and injected into the subgrade soil layer. The one-way valve 5 installed on the pouring pipe 16 ensures that the water glass (sodium silicate aqueous solution) can only be injected into the soil through the suction chamber 3 and the pouring pipe 16. The water in the soil cannot enter the suction chamber 3 through the pouring pipe 16. (The one-way valve 5 ensures that the environment in which the water glass is located is sealed, which can effectively isolate carbon dioxide gas in the external environment and help improve the storage time of the water glass, because the water glass will react when it comes into contact with carbon dioxide, thereby reducing its effectiveness.)

[0044] In this embodiment, as the degree of collapse of the subgrade soil layer gradually increases, on the one hand, while extracting water from the subgrade soil layer (reducing the water content in the subgrade soil layer and thus increasing its bearing strength), water glass stored in the suction chamber 3 is simultaneously injected into the subgrade soil layer, thereby further increasing the bearing strength and support performance of the subgrade soil layer, thus achieving timely and effective maintenance of the subgrade soil layer.

[0045] Example 6, based on Example 5, makes further improvements and optimizations, as follows:

[0046] An auxiliary piston 17 is coaxially sleeved on the piston rod 7 (initially, the suction piston 6 is in position E, the auxiliary piston 17 is in position C, and the suction chamber 3 between C and E forms a sealed chamber 18). The piston rod 7 is provided with a first positioning component that cooperates with the auxiliary piston 17. The auxiliary piston 17 and the suction piston 6 are spaced apart by a certain distance, and the area between them forms a sealed chamber 18. A feeding component is provided in the sealed chamber 18. The feeding component stores sodium silicate powder particles (specifically, fast-dissolving sodium silicate, which can be quickly dissolved in water, and its aqueous solution has all the properties and applications of water glass, that is, it can also be used for soil reinforcement).

[0047] Two suction chambers 3 are coaxially positioned at opposite ends, with bearing pistons 19 that are in close contact with the inner walls of the suction chambers 3. A second positioning assembly corresponding to the bearing pistons 19 is located inside the suction cylinder 2. A force-bearing spring 9 connects the bearing pistons 19 and the suction piston 6. In the initial state, the first and second positioning assemblies in this embodiment respectively achieve the positioning of the auxiliary piston 17 relative to the piston rod 7 and the positioning of the bearing piston 19 relative to the suction chamber 3. In practical use, the process is as follows:

[0048] As the degree of collapse of the roadbed soil layer continues to increase, the reinforcing cylinders 1 on both sides and the connecting parts continuously pull the piston rod 7 outward from the suction chamber 3 through the steel cable 8 (as shown). Figure 9 As shown), until the auxiliary piston 17 moves to a position where it abuts against the end of the suction chamber 3 and the casting pipe 16 (as shown). Figure 7 At position D (where the suction piston 6 is at position F), the piston rod 7 can no longer move forward with the steel cable 8. At this point, the second positioning component contacts the positioning of the auxiliary piston 17 relative to the piston rod 7, so that the auxiliary piston 17 and the piston rod 7 are no longer a single unit. In the subsequent process, if the subgrade soil layer continues to collapse to both sides, the steel cable 8 will continue to pull the piston rod 7 out of the suction chamber 3 (at this time, the auxiliary piston 17 no longer moves synchronously with the piston rod 7). It is worth noting that before the first positioning component releases the positioning of the auxiliary piston 17 relative to the piston rod 7, the sealing cavity 18 between the auxiliary piston 17 and the suction piston 6 is always sealed, providing a better storage environment for the sodium silicate powder particles in the feeding component (the effective storage time of sodium silicate is generally about two years, during which its various properties will not degrade, and the road can complete the shaping of the subgrade and gradually become stable within two years after it is put into use). This solution is mainly to maintain the road in the initial stage after it is put into use (in order to improve the service life of the road).

[0049] After the first positioning component releases the positioning of the auxiliary piston 17, as the steel cable 8 continues to pull the piston rod 7 on both sides, the feeding component located in the aforementioned sealed cavity 18 begins to pour the sodium silicate powder particles stored inside into the suction cavity 3 located between the suction piston 6 and the supporting piston 19. This suction cavity 3 contains water drawn from the roadbed soil layer, causing the sodium silicate to mix with the water and form an aqueous solution of sodium silicate (water glass). As the piston rod 7 continues to extend outward, the amount of sodium silicate powder poured by the feeding component into the suction cavity 3 between the suction piston 6 and the supporting piston 19 increases until the suction piston 6 continues to move a set distance with the piston rod 7 (e.g., ...). Figure 8At position G in the middle, the second positioning component releases the positioning of the bearing piston 19, and the bearing piston 19 is in a free state. Since the force spring 9 connected between the suction piston 6 and the bearing piston 19 is in a stretched state (with a large stretch), the elastic force of the force spring 9 will drive the free bearing piston 19 to move quickly towards the suction piston 6 in the suction chamber 3. This allows the solution formed by mixing sodium silicate and water between the suction piston 6 and the bearing piston 19 to pass through the feeding component, then through the suction piston 6 and the auxiliary piston 17, and into the pouring pipe 16 connected to the suction chamber 3. Finally, it is injected into the subgrade soil layer through the one-way valve 5 on the pouring pipe 16 to further reinforce and solidify the subgrade soil layer (to achieve the maximum maintenance effect of the subgrade soil layer).

[0050] Example 7, based on Example 6, such as Figure 6 As shown, the feeding assembly includes a feeding cylinder 20 located on the side of the suction piston 6 facing the auxiliary piston 17, and the feeding cylinder 20 is arranged in a stepped shape. The larger diameter end of the feeding cylinder 20 is fixedly connected to the suction piston 6, while the smaller diameter end faces the auxiliary piston 17. Two sealing plates 21 are spaced apart inside the feeding cylinder 20. One sealing plate 21 has the same diameter as the smaller diameter end of the feeding cylinder 20, and the other sealing plate 21 has the same diameter as the larger diameter end of the feeding cylinder 20. A certain amount of sodium silicate powder particles are stored in the feeding cylinder 20 located between the two sealing plates 21 (the feeding cylinder 20 and the two sealing plates 21 are arranged to provide a sealed space environment for the sodium silicate). The two sealing plates 21 are coaxially and integrally fixedly connected to a round rod 22, and the round rod 22 is fixedly installed on the side of the auxiliary piston 17 facing the suction piston 6. When the first assembly has not released the positioning between the auxiliary piston 17 and the piston rod 7, the positional relationship of the two sealing plates 21 relative to the feeding cylinder 20 is as follows. Figure 6 As shown in the enlarged partial view, the auxiliary piston 17 is equipped with a discharge assembly. The discharge assembly satisfies the following condition: when the first positioning assembly releases the positioning of the auxiliary piston 17 relative to the piston rod 7 and the suction piston 6 continues to move with the piston rod 7 to the set position (e.g., Figure 8 (at position G in the middle), at this time the discharge component is turned on and the space where the feeding cylinder 20 is located is connected to the pouring pipe 16;

[0051] In practical use, the process is as follows:

[0052] Before the first positioning component releases the positioning of the auxiliary piston 17 and piston rod 7, the positional relationship between the two sealing plates 21 and the feeding cylinder 20 remains as follows: Figure 6 In the state shown, the sodium silicate inside the feeding cylinder 20 is in a sealed environment, so that when the auxiliary piston 17 moves to... Figure 7At position D, the first positioning component releases the positioning between the auxiliary piston 17 and the piston rod 7. In the subsequent process, the steel cable 8 continues to drive the suction piston 6 to move (at this time, the auxiliary piston 17 no longer moves). As the suction piston 6 continues to move, the larger diameter sealing plate 21 extends outward from the feeding cylinder 20 first (e.g., Figure 8 (As shown in the diagram), the smaller diameter sealing plate 21 moves to the larger diameter area inside the feeding cylinder 20, thereby opening the feeding cylinder 20 and pushing some of the sodium silicate stored inside into the suction chamber 3 located between the suction piston 6 and the support piston 19. This causes the sodium silicate to mix with water and form water glass. The amount of sodium silicate powder pushed out increases as the suction piston 6 moves closer to the auxiliary piston 17, until the suction piston 6 moves to... Figure 8 When the second positioning component is at position G, it is set that the second positioning component releases the positioning of the bearing piston 19 and the feeding cylinder 20 is at a certain distance from the end of the auxiliary piston 17.

[0053] As the second positioning component releases its positioning of the bearing piston 19, the bearing piston 19 moves rapidly toward the suction piston 6 under the action of the force spring 9. This allows the water glass (a mixture of sodium silicate and water) located between the suction piston 6 and the bearing piston 19 to enter the feed cylinder through the larger diameter end of the feed cylinder 20 and then enter the area between the suction piston 6 and the auxiliary piston 17 through the smaller diameter end of the support cylinder. Finally, it enters the pouring pipe 16 through the discharge component on the auxiliary piston 17 (achieving the effect of injecting the sodium silicate aqueous solution into the soil). It is worth noting that after the bearing piston 19 moves a certain distance toward the suction piston 6 under the action of the force spring 9, the force applied to the bearing piston 19 will gradually decrease as the force spring 9 recovers to a certain extent. When the force can no longer drive the bearing piston 19 to continue moving toward the suction piston 6, the bearing piston 19 will stop moving (at this time, some sodium silicate aqueous solution will remain in the suction chamber 3 between the bearing piston 19 and the suction piston 6).

[0054] Example 8, based on Example 6, such as Figure 7As shown, this embodiment provides a specific structure of a first positioning component. The first positioning component includes a first positioning rod 23 (in an L-shape) that is radially slidably installed along and elastically connected to the auxiliary piston 17. A first positioning hole 24 corresponding to the piston rod 7 is provided. A part of the first positioning rod 23 is inserted into the first positioning hole 24, thereby realizing the positioning between the auxiliary piston 17 and the piston rod 7 (at this time, the auxiliary piston 17 and the piston rod 7 remain as a whole). A protrusion 25 is integrally provided on the side of the first positioning rod 23 away from the suction piston 6. An arc-shaped part 26 that cooperates with the protrusion 25 is provided on the side wall of the suction cavity 3 away from the bearing piston 19.

[0055] Before the auxiliary piston 17 has moved to Figure 7 When the auxiliary piston 17 and piston rod 7 are positioned at position D, the auxiliary piston 17 and piston rod 7 are positioned by the cooperation of the first positioning rod 23 and the first positioning hole 24. As the auxiliary piston 17 moves toward position D with the piston rod 7, the protrusion 25 on the first positioning rod 23 will first contact the arc surface of the arc part 26 and be blocked by the arc part 26, so that the first positioning rod 23 moves away from the first positioning hole 24 in the auxiliary piston 17 (so that the first positioning rod 23 gradually withdraws from the first positioning hole 24 and retracts into the auxiliary piston 17) until the auxiliary piston 17 moves to position D. At this time, the arc part 26 just abuts against the side wall of the auxiliary piston 17 away from the suction piston 6, and the first positioning rod 23 just completely withdraws from the first positioning hole 24 under the cooperation of the arc part 26 and the protrusion 25 (at this time, the auxiliary piston 17 and piston rod 7 are no longer a whole and the auxiliary piston 17 can no longer move with the piston rod 7).

[0056] In subsequent processes, if the subgrade soil continues to collapse, the piston rod 7 will continue to move outward by the steel cable 8. At this time, the distance between the suction piston 6 and the auxiliary piston 17 gradually decreases, and as the suction piston 6 moves towards the auxiliary piston 17, the sealing plate 21 with a larger diameter located inside the feeding cylinder 20 simultaneously extends outward from inside the feeding cylinder 20 (e.g., Figure 8 As shown in the diagram), the feeding cylinder 20 is in the open state (at the same time, some of the sodium silicate stored in the feeding cylinder 20 falls out of the feeding cylinder 20 and dissolves in the water in the suction chamber 3 between the suction piston 6 and the support piston 19 to form water glass).

[0057] Example 9, based on Example 6, such as Figure 6As shown in the enlarged view on the right, the second positioning assembly includes second positioning rods 27 (L-shaped) that are slidably mounted on both axial sides of the bearing piston 19 and elastically connected to it. Second positioning holes 28 corresponding to the second positioning rods 27 are respectively provided on the inner wall of the suction chamber 3. When the second positioning rods 27 are inserted into their corresponding second positioning holes 28, the bearing piston 19 is positioned (the bearing piston 19 cannot move relative to the suction chamber 3). Figure 6 As shown, ropes 29 are connected to the two second positioning rods 27 on both sides of the bearing piston 19 along the axial direction, and the other end of the ropes 29 is fixedly connected to the middle position of the suction piston 6 (only part of the length of the ropes 29 is shown in the figure). In the initial state, the ropes 29 connected between the second positioning rods 27 and the suction piston 6 are in a slack state until the suction piston 6 moves to... Figure 7 When in position F, the rope 29 connecting the second positioning rod 27 and the suction piston 6 is taut. Subsequently, as the suction piston 6 continues to move from position F along with the piston rod 7... Figure 8 During the movement of the G position, the suction piston 6 applies a pulling force to the second positioning rod 27 through the taut rope 29 (because the rope 29 and the second positioning rod 27 are at a certain angle, the component of the pulling force applied by the rope 29 distributed radially along the bearing piston 19 causes the second positioning rod 27 to gradually withdraw outward from the corresponding second positioning hole 28). Note: In order to reduce the frictional resistance between the second positioning rod 27 and the second positioning hole 28, rollers (balls) can be provided on the sliding contact surface between the second positioning rod 27 and the second positioning hole 28 to reduce the movement resistance.

[0058] like Figure 8 As shown, when the suction piston 6 moves to position G, the second positioning rod 27 is completely withdrawn from the second positioning hole 28 by the rope 29. At this time, the bearing piston 19 is no longer positioned. Since the force spring 9 is under a large degree of tension, the bearing piston 19 moves quickly towards the suction piston 6 under the action of the force spring 9. During the movement, the bearing piston 19 simultaneously squeezes the mixture of sodium silicate and water in the suction chamber 3 between the suction piston 6 and the bearing piston 19 into the area between the auxiliary piston 17 and the suction piston 6 through the open feed cylinder 20. Then, it enters the pouring pipe 16 through the discharge component and is finally injected into the subgrade soil layer through the one-way valve 5 on the pouring pipe 16 (achieving the effect of reinforcing the subgrade soil layer).

[0059] Example 10, based on Example 7, provides a specific structure for an emission component, such as... Figure 8As shown, a stepped tube 30 is provided on the side of the auxiliary piston 17 facing the suction piston 6, with the smaller diameter end of the stepped tube 30 facing the suction piston 6. A valve ball 31 is axially slidably installed inside the larger diameter end of the stepped tube 30 and elastically connected to it. In the initial state, the valve ball 31 is tightly pressed against the cross section of the smaller diameter end of the stepped tube 30 under the action of the spring connected to it (so that the discharge assembly is in the closed state). When the piston rod 7 drives the auxiliary piston 17 and the suction piston 6 to move synchronously and squeezes the water glass in the suction chamber 3 on the side of the auxiliary piston 17 away from the suction piston 6 outward, the valve ball 31 is subjected to the force from the water glass solution and is tightly pressed against the cross section of the smaller diameter end of the stepped tube 30.

[0060] like Figure 6 As shown, abutment rods 32 are respectively provided on the side wall of the suction piston 6 facing the auxiliary piston 17 and at positions corresponding to the stepped tube 30. Before the auxiliary piston 17 moves to... Figure 7 Before position D, the abutment rod 32 and the stepped tube 30 are spaced a certain distance apart, so that when the auxiliary piston 17 moves to position D and the suction piston 6 continues to move with the piston rod 7, the distance between the abutment rod 32 and the stepped tube 30 gradually decreases until the abutment rod 32 is inserted into the stepped tube 30 from the smaller diameter end. In this scheme, when the suction piston 6 moves to position G, the valve ball 31 moves away from the smaller diameter end of the stepped tube 30 under the action of the abutment rod 32 and the valve ball 31 no longer abuts the smaller diameter end of the stepped tube 30. At this time, the stepped tube 30 is in the open state, and the bearing piston 19 is no longer positioned by the second positioning component. Under the action of the force spring 9, the bearing piston 19 moves quickly towards the suction piston 6.

[0061] like Figure 8 As shown in the diagram, the arrows indicate the directions in which the bearing piston 19 moves after losing its position and under the action of the force spring 9, and the sodium silicate solution between the suction piston 6 and the bearing piston 19. The solution enters the feeding cylinder 20 from the larger diameter end and from the smaller diameter end into the area between the suction piston 6 and the auxiliary piston 17. It then enters through the smaller diameter end of the open stepped pipe 30 and exits from the larger diameter end, finally being injected into the subgrade soil layer through the pouring pipe 16 connected to the suction chamber 3. This further reinforces and solidifies the subgrade soil layer, improving its vertical bearing capacity and stability (maximizing the maintenance of the subgrade soil layer). Note: To achieve better results, such as... Figure 2 As shown, pothole-accommodating grooves can be provided between the connection points on both sides of the roadbed, and suction cylinders 2 and matching structural components (such as...) can be provided in the pothole-accommodating grooves in the aforementioned areas. Figure 1As shown in the diagram, on the one hand, by increasing the number of suction cylinders 2, the cooperation between the suction cylinders 2, piston rods 7, and steel cables 8 can achieve better constraint on the subgrade soil layer, thereby minimizing the risk of subgrade soil layer collapsing or slumping to the soft soil areas on both sides (causing settlement). On the other hand, when the subgrade soil layer collapses or slumps to both sides, the presence of more suction cylinders 2 allows for the injection of more cementing agent (such as water glass) into the subgrade soil layer, thus achieving better reinforcement and solidification of the subgrade soil layer.

[0062] The above is merely for illustrating the present invention. It should be understood that the present invention is not limited to the above embodiments, and various modifications that conform to the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An intelligent anti-settlement structure for soft soil foundations, including a roadbed, characterized in that, Pile components are arranged at equal intervals along the length of the roadbed, and adjacent pile components are connected by a connecting part. The pile assembly includes reinforcing cylinders (1) spaced apart along the width of the roadbed, and anchoring components are provided inside the reinforcing cylinders (1). Suction cylinders (2) are provided between the reinforcing cylinders (1) located on both sides of the roadbed and at corresponding positions. Suction chambers (3) are provided on both sides of the suction cylinders (2), and suction components are provided inside the suction chambers (3). Suction pipes (4) are connected to the opposite side of the two suction chambers (3). The suction assembly is fixedly connected to the outer wall of the corresponding reinforcing cylinder (1) via a steel cable (8); One-way valves (5) are respectively provided on opposite sides of the two suction chambers (3); The suction assembly includes a suction piston (6) disposed in the suction chamber (3) and the suction piston (6) is integrally provided with a piston rod (7), and the piston rod (7) extends outward from the suction chamber (3) and is connected to a steel cable (8); A force-bearing spring (9) is connected between the two suction pistons (6) facing each other and the suction cylinder (2); The suction tube (4) is provided with suction holes (10) evenly distributed, and the outside of the suction holes (10) is covered with a sponge (11); The suction chamber (3) on the side of the suction piston (6) away from the force spring (9) contains water glass. Both suction chambers (3) on opposite sides are connected to the casting pipe (16), and one-way valves (5) are arranged on the outer wall of the casting pipe (16).

2. The intelligent anti-settlement structure for soft soil foundation according to claim 1, characterized in that, The reinforcing cylinder (1) has vertically extending limiting grooves (12) on both sides of its axial direction. The connecting part includes a limiting frame (13) that is vertically slidably installed with the limiting groove (12). The two adjacent limiting frames (13) located on the same side of the roadbed are connected by a casting component.

3. The intelligent anti-settlement structure for soft soil foundation according to claim 2, characterized in that, The anchoring assembly includes a number of anchoring units vertically spaced within the reinforcing cylinder (1). Each anchoring unit includes anchoring rods (14) spaced around and slidably installed within the reinforcing cylinder (1). A trigger plate (15) elastically connected to the reinforcing cylinder (1) is slidably installed on the wall of the reinforcing cylinder (1) on both sides of the limiting groove (12). The trigger plate (15) drives the number of anchoring rods (14) via a transmission assembly. The trigger plate (15) is placed in the limiting groove (12) at one end and the bottom end of the limiting frame (13) at the other end are rounded. The specific structure of the transmission assembly includes a plurality of gears on the outer wall of the trigger plate (15) and a small gear that is rotatably installed inside the wall of the reinforcing cylinder (1). The small gear is coaxially rotated with a large gear and the large gear is engaged with a plurality of gears on the anchor rod (14).

4. The intelligent anti-settlement structure for soft soil foundation according to claim 2, characterized in that, An auxiliary piston (17) is sleeved on the piston rod (7) and a first positioning component that cooperates with the auxiliary piston (17) is provided on the piston rod (7). The auxiliary piston (17) and the suction piston (6) are spaced apart and form a sealed cavity (18) between them. A feeding component is provided in the sealed cavity (18) and sodium silicate is stored in the feeding component. The two suction chambers (3) are coaxially provided with a bearing piston (19) on opposite sides and a force spring (9) is connected between the suction piston (6) and the bearing piston (19). The suction cylinder (2) is provided with a second positioning component corresponding to the bearing piston (19). The feeding assembly includes a feeding cylinder (20) located on the side of the suction piston (6) facing the auxiliary piston (17), and the feeding cylinder (20) is arranged in a stepped manner. Two sealing plates (21) are spaced apart inside the feeding cylinder (20), and the two sealing plates (21) are fixedly connected to the auxiliary piston (17) via a round rod (22). The feed cylinder (20) has a smaller diameter end facing the auxiliary piston (17) and sodium silicate is stored between two sealing plates (21). The auxiliary piston (17) is equipped with a discharge assembly. The discharge assembly includes a stepped tube (30) located on the side of the auxiliary piston (17) facing the suction piston (6), with the smaller diameter end of the stepped tube (30) facing the suction piston (6). A valve ball (31) is axially slidably installed inside the larger diameter end of the stepped tube (30) and elastically connected thereto. The suction piston (6) is provided with an abutment rod (32) corresponding to the valve ball (31). The first positioning component includes a first positioning rod (23) that is slidably mounted along the auxiliary piston (17) and elastically connected thereto. The piston rod (7) is provided with a first positioning hole (24) corresponding to the first positioning rod (23). The first positioning rod (23) has a protrusion (25) on the side away from the suction piston (6) and an arc-shaped part (26) on the side of the suction chamber (3) away from the bearing piston (19). The second positioning component includes a second positioning rod (27) that is slidably mounted on both sides of the bearing piston (19) and elastically connected thereto, and the inner wall of the suction cavity (3) is provided with a second positioning hole (28) corresponding to the second positioning rod (27); The second positioning rod (27) is connected to the center of the suction piston (6) via a rope (29) on the side facing the suction piston (6).

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