Municipal road soft soil foundation reinforcing structure and mounting method

Abstract

The invention relates to the field of civil engineering foundation reinforcement, in particular to a municipal road soft soil foundation reinforcement structure and an installation method. The method comprises the steps that a gravel layer and a concrete layer are sequentially laid above a soft soil layer, stabilizing piles with protrusions are driven into the soft soil layer and arranged on the two sides of the length direction of a pavement, the upper ends of the stabilizing piles penetrate through the gravel layer to be embedded into the concrete layer, and connecting pieces connected with the stabilizing piles are arranged in the concrete layer; the opposite stabilizing piles along the two sides of the road surface are sleeved with annular steel bar rings, the adjacent stabilizing piles are connected through fasteners, related pressure supply assemblies, air supply pieces and other structures are further provided, and the installation method of the reinforcing structure is illustrated. The purposes of improving the municipal road soft soil foundation reinforcing effect and enhancing the foundation stability and bearing capacity are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of soft soil foundation road structures, and in particular to a municipal road soft soil foundation reinforcement structure and an installation method. Background Art

[0002] my country's highway industry standards define soft soil foundation as a weak soil layer with low strength and high compression, often containing a certain amount of organic matter. Japan's highway design specifications define it as consisting primarily of soft soil with a high content of fine particles such as clay and silt, organic soil with large pores, peat, and loose sand. Therefore, soft soil foundation primarily refers to a foundation with a high groundwater level, poor stability of the fill and structures above it, and prone to settlement.

[0003] When encountering local swamp areas or soft soil areas during road paving, if rigid concrete is laid directly on the soft foundation, the soft soil foundation below the concrete road will sink to form hollow areas, which may easily cause local collapse of the concrete road, posing a threat to pedestrians and vehicles on the road. Therefore, there is room for improvement. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a municipal road soft soil foundation reinforcement structure and installation method, which can improve the anti-destruction ability of concrete roads on soft soil foundations, thereby reducing the local collapse of concrete roads caused by soft soil foundation settlement.

[0005] In the first aspect, the present application provides a municipal road soft soil foundation reinforcement structure adopting the following technical solutions: The reinforcement structure of a municipal road soft soil foundation comprises a crushed stone layer and a concrete layer laid in sequence above the soft soil layer, and also comprises a plurality of stabilizing piles driven into the soft soil layer, wherein the side walls of the stabilizing piles are provided with a plurality of protrusions, and the stabilizing piles are arranged on both sides along the length direction of the road surface; the upper ends of the stabilizing piles pass through the crushed stone layer and are buried in the concrete layer, and a connecting piece connected to the stabilizing piles is buried in the concrete layer, and the connecting piece comprises a connecting rod and a T-shaped block integrally formed at both ends of the connecting rod, the stabilizing rod is provided with a T-shaped slot arranged in a one-to-one correspondence with the T-shaped block, the T-shaped block is inserted into the T-shaped slot and slidably fits in the T-shaped slot, the top of the stabilizing pile is threadedly connected to a limiting ring, the bottom of the limiting ring is in conflict with the top of the T-shaped block, the stabilizing piles on both sides along the length direction of the road surface are arranged opposite to each other, the outer peripheral surfaces of the stabilizing piles facing each other along the length direction of the road surface are provided with an annular steel bar ring, and two adjacent annular steel bar rings are connected by fasteners. By adopting the above technical solution, stabilizing piles with protrusions are driven above the soft soil layer, improving the bearing capacity and stability of the soft soil foundation. The tops of the stabilizing piles penetrate the gravel layer and are embedded in the concrete layer, connected by connectors to strengthen the connection between the layers. The T-blocks of the connectors slide in the T-slots of the stabilizing piles, and are then limited by limit rings to ensure a secure connection between the connectors and the stabilizing piles. The stabilizing piles are positioned opposite each other along the length of the road surface, encased in annular steel rings, and connected by fasteners, further enhancing the integrity and stability of the reinforced structure. The gravel layer is thick enough to allow the tops of the stabilizing piles to protrude from the gravel layer. A concrete layer is then laid above the gravel layer, burying the tops of the stabilizing piles, with connectors embedded in the concrete layer. When the concrete layer bears heavy objects such as pedestrians and vehicles, the connecting structure enhances the concrete layer's bending resistance. Furthermore, the concrete layer and the connecting structure are anchored to the stabilizing piles. Consequently, when the soft soil foundation beneath the road surface settles locally, the crushed stone layer surrounding the location of the localized settlement bears the compressive load of the concrete layer, while the stabilizing piles on either side bear the tensile stress load on both sides of the concrete layer. This prevents the concrete layer from collapsing or breaking, thus protecting the lives and property of pedestrians on the road. While the concrete layer will not experience large-scale localized collapse, localized fractures can alert municipal authorities to road maintenance, serving as an early warning.

[0006] Preferably, the fastener includes a plurality of fastening rods, which are arranged at intervals along the width direction of the road surface. Each of the fastening rods is provided with a snap-in hole corresponding to a plurality of annular steel bars. The snap-in holes are connected to the bottom surface of the fastening rod, and the annular steel bars are inserted into the snap-in holes and snap-in to the snap-in holes.

[0007] By adopting the above technical solution, the stabilizing piles are connected through the annular steel rings to enhance the overall stability of the foundation. The adjacent annular steel rings are conveniently and firmly connected using the fastening rods and the clamping holes to further improve the structural stability.

[0008] Preferably, the fastening rod is provided with a first air hole along the length direction of the fastening rod, and a sliding groove is provided on the side wall of the clamping hole. The first air hole is connected to the sliding groove. A section of the plurality of first air holes located on the same side is connected to a pressure supply assembly for providing air pressure to the first air hole through a hose assembly. An arc plate is slidably connected in the sliding groove, and a rubber pad is provided on the arc plate, and the rubber pad presses against the side wall of the annular steel bar ring. By adopting the above technical solution, when the stabilizing pile is driven downward, the limiting ring can prevent the stabilizing rod from moving upward. At the same time, the first air hole provided along the length direction of the fastening rod is connected to the sliding groove on the side wall of the clamping hole, and the pressure supply assembly is used to provide air pressure to the first air hole, so that the arc plate in the sliding groove drives the rubber pad to press against the side wall of the annular steel bar ring, thereby enhancing the connection stability between the annular steel bar ring and the fastening rod, thereby improving the stability of the entire reinforcement structure. Preferably, the pressure supply assembly includes a first gas one-way valve, a return spring, a sliding block, a guide rod, and a rubber cup. The first gas one-way valve is threadedly connected to the fastening rod and communicates with the first air hole. The air inlet end of the first gas one-way valve is connected to a gas storage tank. The gas storage tank includes a tank body and a plurality of rubber hoses communicated with the tank body. The ends of the rubber hoses are connected to hard joints corresponding to the plurality of first gas one-way valves one by one. The hard joints are threadedly connected to the air inlet end of the first gas one-way valve. A second blind hole is defined on the top surface of the stabilizing pile. The second blind hole is slidably connected to the sliding block. The rubber cup is sleeved over the sliding block. A support ring is threadedly connected to the inner surface of the second blind hole. The guide rod is connected to the sliding block. The guide rod passes through the support ring and extends out of the second blind hole. The end of the guide rod is connected to a force-bearing block. One end of the return spring is connected to the force-bearing block, and the other end is connected to the support ring. A gas outlet communicated with the second blind hole is defined on the side wall of the stabilizing pile. The gas outlet is communicated with the gas storage tank through a gas supply member. By adopting the above technical solution, when a load-bearing plate is placed above the load-bearing block and the load-bearing plate is pressed downward by an excavator, the load-bearing block drives the guide rod and the sliding block to move downward, and the rubber cup outside the sliding block also moves accordingly. The volume of the space below the sliding block decreases and the pressure increases. The air pressure causes the rubber cup to expand and adhere to the side wall of the second blind hole. The gas in the space below the sliding block is pressed into the gas storage tank through the second blind hole and the air outlet through the connecting piece. The gas in the gas storage tank then enters the first air hole through the rubber hose, the hard joint and the first gas one-way valve, so that air pressure is formed in the first air hole, which in turn pushes the arc plate in the sliding groove to slide, so that the rubber pad on the arc plate presses against the side wall of the annular steel ring; when the excavator no longer applies force to the load-bearing plate, the return spring drives the load-bearing block, the guide rod and the sliding block to return to their original position, the space below the sliding block increases, the pressure decreases, and air is sucked into the space below the sliding block from all sides, waiting for the next pressure to be applied. In this way, a process of providing stable air pressure for the reinforced structure to enhance the stability of the connection is achieved, and the force in the piling process is reused.Preferably, a hanging spring is provided at the top of the arc plate, one end of which passes through the sliding groove and is connected to the side wall of the first air hole. In a natural state, the arc plate is completely located in the sliding groove. By adopting the above technical solution, a hanging spring is provided at the top of the arc plate, and one end of the spring passes through the sliding groove and is connected to the side wall of the first air hole, so that the arc plate is completely located in the sliding groove in a natural state, which makes it convenient to slide the arc plate out of the sliding groove by air pressure control when needed, and press against the annular steel ring, so as to facilitate the clamping and fixing of the annular steel ring. Preferably, the air outlet is an internal threaded hole, and the gas supply component includes a second gas one-way valve, a threaded pipe and an air supply pipe. The air supply pipe is a hose, one end of the threaded pipe is connected to the air supply pipe, and the other end is threadedly connected to the air outlet. The end of the air supply pipe away from the threaded pipe is connected to the second gas one-way valve, and the gas one-way valve is connected to the gas storage tank. By adopting the above technical solution, when the stabilizing pile is under pressure, the internal gas is transported to the gas storage tank through the gas supply part, and the second gas one-way valve is used to ensure the one-way flow of gas to avoid backflow. The threaded pipe is conveniently connected to the air outlet, and the hose characteristics of the air supply pipe are convenient for flexible arrangement, so that the gas generated by the pressure of the stabilizing pile can be effectively transported to the gas storage tank. At the same time, the protrusion is used to increase the friction between the stabilizing pile and the soft soil layer. The connecting piece realizes the connection between the stabilizing pile and the concrete layer and can be slidably adjusted. The limiting ring fixes the connecting piece, and the annular steel ring and fasteners enhance the integrity of the structure, so that the foundation reinforcement structure can better adapt to pressure changes and maintain stability. Preferably, the bottom end of the stabilizing pile is set in an inverted cone shape. By adopting the above technical solution, the inverted cone shape of the bottom end of the stabilizing pile can make it easier to drive into the soft soil layer, improve construction efficiency, and at the same time increase the contact area between the stabilizing pile and the soft soil layer, thereby improving the stability of the reinforced structure. On the second aspect, the present application also provides a method for installing a soft soil foundation reinforcement structure for a municipal road, comprising the following steps: S1: inserting the stabilizing pile portion into the soft soil layer, and connecting the stabilizing rod between the two stabilizing piles; S2: rotating the limiting ring so that the bottom surface of the limiting ring contacts the top of the T-block; S3: sleeve the annular steel bar ring on the outer circumference of the two opposite stabilizing piles, and then clamp the multiple fastening rods to the annular steel bar ring; S4: placing a force plate above the multiple force blocks so that the top surfaces of the multiple force blocks are in contact with the force plate, and using an excavator to apply force downward on the force plate multiple times at intervals until the excavator can no longer press it; S5: disassembling the gas storage tank and the gas supply component, and laying a gravel layer and the concrete layer on the soft soil layer in turn.By adopting the above technical scheme, stabilizing piles with protrusions and arranged on both sides of the road surface in the length direction are driven into the soft soil layer, and a crushed stone layer and a concrete layer are laid in sequence above the soft soil layer, which can enhance the stability of the foundation; the upper end of the stabilizing pile passes through the crushed stone layer and is buried in the concrete layer and connected with a connector, which can make the structure more stable; the connector is restricted by a limit ring to prevent it from detaching; annular steel rings are sleeved on the outer peripheral surfaces of the stabilizing piles facing each other on both sides along the length direction of the road surface and connected with fasteners, which can further improve the overall stability; the annular steel rings are clamped by a fastening rod with an arc plate and a rubber pad to strengthen the connection; the pressure supply component can control the movement of the arc plate to tighten the annular steel ring; the lifting spring makes the arc plate naturally located in the sliding groove for easy operation; the air supply component realizes gas circulation; the bottom end of the stabilizing pile is inverted cone shape for easy insertion into the soft soil layer; through specific installation steps, the installation of the municipal road soft soil foundation reinforcement structure can be completed in a standardized and efficient manner.

[0009] In summary, the present application includes at least one of the following beneficial technical effects: 1. The stabilizing piles and the protrusions on their side walls can enhance the stability of the soft soil foundation, reduce foundation settlement, and prevent the concrete road from partially collapsing due to the formation of hollow areas due to foundation settlement; 2. The connectors, limiting rings and annular steel bars can strengthen the connection between the stabilizing piles and improve the integrity and stability of the entire reinforced structure; 3. The fasteners connect adjacent annular steel bars to further enhance the stability of the structure and ensure the safety of pedestrians and vehicles on the road. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the application when the installation is completed.

[0011] Figure 2 This is a schematic diagram of the structure before laying the gravel layer and the concrete layer in the embodiment of the present application.

[0012] Figure 3 It is a schematic diagram of the structure of the stabilizing rod, the first gas one-way valve, the return spring and the guide rod in the embodiment of the present application.

[0013] Figure 4 Schematic diagram of the connecting rod, T-block and T-slot structure in an embodiment of the present application.

[0014] Figure 5 It is a schematic diagram of the first air hole, arc plate and hanging spring structure in the embodiment of the present application.

[0015] Figure 6 It is a schematic diagram of the sliding block, guide rod, and rubber bowl structure in an embodiment of the present application.

[0016] Explanation of the accompanying symbols: 1. soft soil layer; 2. gravel layer; 3. concrete layer; 4. stabilizing pile; 5. scale; 6. connecting rod; 7. T-block; 8. T-slot; 9. limiting ring; 10. annular steel ring; 11. fastening rod; 12. snap-in hole; 13. first air hole; 14. sliding groove; 15. arc plate; 16. rubber pad; 17. first gas one-way valve; 18. return spring; 19. sliding block; 20. guide rod; 21. rubber bowl; 22. gas storage tank; 23. tank body; 24. rubber hose; 25. hard joint; 26. second blind hole; 27. support ring; 28. force block; 29. ​​air outlet; 30. lifting spring; 31. second gas one-way valve; 32. threaded pipe; 33. air supply pipe. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-6 This application is described in further detail.

[0018] The technical solutions in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of the present invention, but are not limited thereto. Those skilled in the art can fully combine the embodiments of the present invention, and other embodiments obtained without creative work are also within the scope of protection of the present invention.

[0019] This application mainly adopts the solution of laying a multi-layer structure on a soft soil foundation and reinforcing it, which achieves the effect of enhancing the stability of the road on the soft soil foundation and reducing the risk of collapse. The following is a further detailed description of this application.

[0020] Example 1 The embodiment of the present application provides a municipal road soft soil foundation reinforcement structure, referring to Figure 1 、 Figure 2 and Figure 3 It includes a crushed stone layer 2 and a concrete layer 3 laid in sequence on the soft soil layer 1, and also includes a number of stabilizing piles 4 driven into the soft soil layer 1, and a scale 5 is provided on the side wall of the stabilizing pile 4 along the length direction of the stabilizing pile 4.

[0021] Reference Figure 2 、 Figure 3 and Figure 4 Stabilizing piles 4 are equipped with multiple protrusions (not shown) on their sidewalls. These piles 4 are arranged on either side of the road surface along its length. Their upper ends penetrate the gravel layer 2 and are embedded within the concrete layer 3. In this way, the piles 4 act like solid pillars, providing a stable support base for the entire road structure. In soft soil, for example, these piles can effectively resist subsidence, preventing road collapse caused by subsidence.

[0022] Reference Figure 2、 Figure 3 and Figure 4 A connector connected to the stabilizing pile 4 is embedded in the concrete layer 3. The connector includes a connecting rod 6 and T-blocks 7 integrally formed at both ends of the connecting rod 6. T-slots 8 corresponding to the T-blocks 7 are formed on the stabilizing rod. The T-blocks 7 are inserted into the T-slots 8 and slide in the T-slots 8.

[0023] Reference Figure 2 、 Figure 3 and Figure 4 This arrangement of T-blocks 7 and T-slots 8 not only facilitates the connection of the connector to the stabilizing pile 4, but also allows the connector to slide on the stabilizing pile 4 to a certain extent, accommodating minor displacements that may occur in soft soil. For example, if the soft soil foundation experiences slight settlement, the T-blocks 7 can slide appropriately within the T-slots 8, preventing excessive stress concentration between the connector and the stabilizing pile 4, thereby ensuring the stability of the entire structure.

[0024] Reference Figure 2 、 Figure 3 and Figure 4 The top of the stabilizing pile 4 is threadedly connected to a limiting ring 9, and the bottom of the limiting ring 9 conflicts with the top of the T-block 7. The function of the limiting ring 9 is to fix the connecting piece to prevent the connecting piece from slipping off the stabilizing pile 4 during use, thereby further enhancing the stability of the structure.

[0025] Reference Figure 2 、 Figure 3 and Figure 4 Stabilizing piles 4 are positioned opposite each other along the length of the road surface. Annular steel rings 10 are placed around the outer circumferences of these stabilizing piles 4, with fasteners connecting adjacent annular steel rings 10. These rings 10 connect the stabilizing piles 4 on both sides, forming a cohesive framework and enhancing the integrity and deformation resistance of the entire road reinforcement structure. The fasteners connect and secure the annular steel rings 10, allowing them to fit tightly around the stabilizing piles 4 and function together.

[0026] Reference Figure 2 、 Figure 3 and Figure 4 The bottom end of the stabilizing pile 4 is in an inverted cone shape. This inverted cone design makes it easier for the stabilizing pile 4 to be inserted into the soft soil layer 1, just like a sharp nail is easier to drive into a wooden board. At the same time, the inverted cone shape of the bottom end can also increase the contact area between the stabilizing pile 4 and the soft soil layer 1, thereby improving the bearing capacity of the stabilizing pile 4.

[0027] Reference Figure 2 、 Figure 3 and Figure 4The advantage of integrally forming the T-block 7 and the connecting rod 6 is that it ensures the integrity and strength of the connector, preventing loosening or breakage between the T-block 7 and the connecting rod 6 during use. The limiting ring 9 can be circular and have a non-slip texture on the surface. This makes it easier for the operator to grip the limiting ring 9 when tightening it, facilitating operation. It also prevents the limiting ring 9 from loosening due to vibration during use. When the annular steel ring 10 is placed on the stabilizing pile 4, it can effectively restrain the lateral displacement of the stabilizing pile 4 and improve the stability of the stabilizing pile 4.

[0028] The implementation principle of this embodiment is as follows: the municipal road soft soil foundation reinforcement structure of this embodiment greatly enhances the stability of the road on the soft soil foundation through the synergistic effect of multiple structures. The stabilizing pile 4 penetrates deep into the soft soil layer 1 and has a protrusion, which increases the friction and anchoring force with the soft soil layer 1, and effectively resists the settlement of the soft soil foundation. The setting of the connector and the limiting ring 9 ensures the connection stability between the stabilizing pile 4 and the concrete layer 3. The annular steel ring 10 and the fasteners connect the stabilizing piles 4 on both sides into a whole, which improves the integrity and deformation resistance of the structure. Compared with the traditional method of paving roads directly on soft soil foundations, this structure can better adapt to the characteristics of soft soil foundations, reduce the risk of local collapse of the road, and ensure the safety of pedestrians and vehicles on the road. It is an effective improvement to the existing technology.

[0029] Example 2 The difference between this embodiment and the above embodiment is that: Figure 2 、 Figure 3 and Figure 4 , refer to Figure 1 、 Figure 2 and Figure 3 The fasteners include a plurality of fastening rods 11, which are spaced apart along the width of the road surface. Each fastening rod 11 is provided with a snap-fitting hole 12 corresponding to each of the plurality of annular steel rings 10. The snap-fitting holes 12 communicate with the bottom surface and both sides of the fastening rods 11. The annular steel rings 10 are inserted into and snap-fitted with the snap-fitting holes 12. This snap-fitting method makes the connection between the fastening rods 11 and the annular steel rings 10 tighter and more reliable, and can better connect the annular steel rings 10 together to form an integrated structure.

[0030] Reference Figure 2 、 Figure 5 and Figure 6 The fastening rod 11 is provided with a first air hole 13 along the length direction of the fastening rod 11, and a sliding groove 14 is provided on the side wall of the clamping hole 12. The first air hole 13 is connected to the sliding groove 14, and a section of multiple first air holes 13 located on the same side is connected to a pressure supply component for providing air pressure to the first air holes 13 through a hose assembly.

[0031] Reference Figure 2 、 Figure 5 and Figure 6 An arc plate 15 is slidably connected to the sliding groove 14, and a rubber pad 16 is provided on the arc plate 15. The rubber pad 16 presses against the side wall of the annular steel ring 10. After the pressure supply component provides air pressure to the first air hole 13, the air pressure is transmitted to the sliding groove 14 through the first air hole 13, pushing the arc plate 15 to slide in the sliding groove 14, thereby causing the rubber pad 16 to press tightly against the side wall of the annular steel ring 10, further enhancing the connection strength between the fastening rod 11 and the annular steel ring 10. It should be noted that the weight of the fastening rod 11 is much greater than the pressure generated by the gas flowing in the first air hole 13. Therefore, the fastening rod 11 will not be separated from the clamping connection with the annular steel ring 10 due to the downward air pressure.

[0032] Reference Figure 2 、 Figure 5 and Figure 6 The pressure supply assembly includes a first gas check valve 17, a return spring 18, a sliding block 19, a guide rod 20, and a rubber cup 21. The first gas check valve 17 is threadedly connected to the fastening rod 11 and communicates with the first air hole 13. The gas inlet end of the first gas check valve 17 is connected to a gas storage tank 22. The gas storage tank 22 includes a tank body 23 and multiple rubber hoses 24 connected to the tank body 23. The ends of the rubber hoses 24 are connected to hard connectors 25 corresponding to the multiple first gas check valves 17. The hard connectors 25 are threadedly connected to the gas inlet end of the first gas check valve 17. A second blind hole 26 is defined on the top surface of the stabilizing pile 4. This second blind hole 26 is slidably connected to the sliding block 19. A rubber cup 21 is sleeved over the sliding block 19. A support ring 27 is threadedly connected to the internal thread of the second blind hole 26. The sliding block 19 is connected to a guide rod 20, which passes through the support ring 27 and extends out of the second blind hole 26. The end of the guide rod 20 is connected to a force block 28. One end of the return spring 18 is connected to the force block 28, and the other end is connected to the support ring 27. A gas outlet 29 is defined on the sidewall of the stabilizing pile 4 and communicates with the second blind hole 26. The gas outlet 29 is connected to the gas storage tank 22 via a connecting piece.

[0033] Reference Figure 2 、 Figure 5 and Figure 6 When pressure is applied to the force-bearing block 28, the sliding block 19 slides downward within the second blind hole 26, compressing the air within the rubber cup 21. The air then flows through the air outlet 29 and the connecting piece into the gas storage tank 22, then through the first gas check valve 17 into the first air hole 13, pushing the arc plate 15 to slide. When the pressure is removed, the return spring 18 returns the sliding block 19 to its original position, ready for the next operation.

[0034] Reference Figure 2 、 Figure 5 and Figure 6A hanging spring 30 is provided on the top of the arc plate 15. One end of the hanging spring 30 passes through the sliding groove 14 and is connected to the side wall of the first air hole 13. In a natural state, the arc plate 15 is completely located in the sliding groove 14. The function of the hanging spring 30 is to pull the arc plate 15 back into the sliding groove 14 when there is no air pressure, so as to prevent the arc plate 15 from affecting the insertion and removal of the annular steel ring 10.

[0035] Reference Figure 2 、 Figure 5 and Figure 6 A gas supply component is provided between the gas outlet 29 and the gas storage tank 22. The gas outlet 29 is an internally threaded hole. The gas supply component includes a second gas one-way valve 31, a threaded tube 32, and a gas supply pipe. The gas supply pipe is a flexible pipe. One end of the threaded tube 32 is connected to the gas supply pipe, and the other end is threadedly connected to the gas outlet 29. The end of the gas supply pipe away from the threaded tube 32 is connected to the second gas one-way valve 31, and the second gas one-way valve 31 is connected to the gas storage tank. The function of the gas supply component is to ensure that gas can smoothly enter the gas storage tank 22 from the gas outlet 29. At the same time, the second gas one-way valve 31 can prevent gas backflow, ensuring the normal operation of the entire pressure supply system.

[0036] The implementation principle of this embodiment is as follows: This embodiment further enhances the connection strength and stability between the annular steel rings 10 through the unique design of fasteners and pressure supply components. The rubber pad 16 on the arc plate 15 is driven by air pressure to press against the annular steel ring 10. This method can flexibly adjust the size of the pressing force according to actual needs. Moreover, the structural design of the pressure supply component is ingenious. It realizes the compression and delivery of gas by applying pressure to the force block 28, which is convenient to operate. At the same time, the setting of the air supply parts and each one-way valve ensures the directionality of the gas flow and the stability of the system. Compared with ordinary connection methods, it can better adapt to the slight displacement and deformation that may occur in soft soil foundations, improve the reliability and durability of the entire road reinforcement structure, and is a further improvement on the existing technology.

[0037] Example 3 An embodiment of the present application provides a method for installing a soft soil foundation reinforcement structure for a municipal road, comprising the following steps: S1: Partially insert the stabilizing pile 4 into the soft soil layer 1 and connect the stabilizing rod between the two stabilizing piles 4. In this step, the insertion position and depth of the stabilizing pile 4 must first be determined according to the design requirements, and the stabilizing pile 4 must be driven into the soft soil layer 1 using appropriate piling equipment. When inserting the stabilizing pile 4, pay attention to the verticality of the stabilizing pile 4 to ensure that the stabilizing pile 4 can be accurately inserted into the predetermined position. Then, connect the stabilizing rod between the two stabilizing piles 4. When connecting, ensure that the T-block 7 of the connecting piece can be accurately inserted into the T-slot 8 on the stabilizing pile 4, and that the sliding fit between the connecting piece and the stabilizing pile 4 is smooth.

[0038] S2: Rotate the limiting ring 9 so that the bottom surface of the limiting ring 9 contacts the top of the T-block 7. During the tightening process, pay attention to the contact between the limiting ring 9 and the T-block 7 to ensure that the limiting ring 9 can firmly fix the connector to prevent the connector from loosening during subsequent construction and use.

[0039] S3: Annular steel rings 10 are placed around the outer circumferences of two opposing stabilizing piles 4, and then multiple fastening rods 11 are fastened to the annular steel rings 10. When placing the annular steel rings 10, ensure that they fit tightly around the stabilizing piles 4, and that the spacing between adjacent annular steel rings 10 meets design requirements. When fastening rods 11 are fastened to the annular steel rings 10, ensure that the annular steel rings 10 are accurately inserted into the fastening holes 12 on the fastening rods 11 to ensure a secure connection.

[0040] S4: Place a force plate above the multiple force blocks 28 so that the top surfaces of the multiple force blocks 28 are in contact with the force plate, and use an excavator to apply force to the force plate multiple times at intervals until the excavator can no longer press it down. When placing the force plate, ensure that the force plate is placed horizontally and can evenly transfer pressure to each force block 28. When applying force with the excavator, control the force and frequency to avoid structural damage caused by excessive force. The purpose of multiple interval force applications is to allow the pressure supply component enough time to deliver gas to the corresponding parts to achieve effective compression of the annular steel ring 10.

[0041] S5: Remove the gas storage tank 22 and gas supply components, and lay the gravel layer 2 and concrete layer 3 on the soft soil layer 1. When removing the gas storage tank 22 and gas supply components, pay attention to safety to avoid damaging the equipment. When laying the gravel layer 2 and concrete layer 3, follow relevant construction specifications and requirements to ensure their quality.

[0042] The implementation principle of this embodiment is as follows: this installation method is operated in a reasonable order, and the installation of the stabilizing piles 4 and the connecting parts is completed first to lay the foundation for subsequent construction. Then, the various components are connected into a whole by sleeve-mounting the annular steel ring 10 and connecting the fastening rod 11. The step of applying pressure to the force-bearing block 28 can activate the pressure supply assembly, realize the compression of the annular steel ring 10, and enhance the stability of the structure. Finally, the gas storage tank 22 and the gas supply parts are disassembled and the gravel layer 2 and the concrete layer 3 are laid to complete the construction of the entire road reinforcement structure. This installation method can ensure the installation quality of the soft soil foundation reinforcement structure of the municipal road, improve the stability and service life of the road, and is more efficient and reliable than the traditional installation method. It is an innovative application of the existing technology.

[0043] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A soft soil foundation reinforcement structure for a municipal road, comprising a crushed stone layer (2) and a concrete layer (3) sequentially laid on a soft soil layer (1), and also comprising a plurality of stabilizing piles (4) driven into the soft soil layer (1), wherein the side walls of the stabilizing piles (4) are provided with a plurality of protrusions, and the stabilizing piles (4) are arranged on both sides along the length direction of the road surface; the upper ends of the stabilizing piles (4) penetrate the crushed stone layer (2) and are buried in the concrete layer (3), and a connecting piece connected to the stabilizing piles (4) is buried in the concrete layer (3), and the connecting piece comprises a connecting rod (6) and a T-shaped connecting rod integrally formed at both ends of the connecting rod (6). The stabilizing rod is provided with a T-shaped slot (8) corresponding to the T-shaped block (7), the T-shaped block (7) is inserted into the T-shaped slot (8) and slides in the T-shaped slot (8), the top of the stabilizing pile (4) is threadedly connected to a limiting ring (9), the bottom of the limiting ring (9) contacts the top of the T-shaped block (7), the stabilizing piles (4) on both sides along the length direction of the road surface are arranged opposite to each other, the outer peripheral surfaces of the stabilizing piles (4) on both sides along the length direction of the road surface are sleeved with an annular steel ring (10), and the two adjacent annular steel rings (10) are connected by fasteners.

2. The soft soil foundation reinforcement structure for a municipal road according to claim 1, characterized in that: The fastener comprises a plurality of fastening rods (11), the plurality of fastening rods (11) being arranged at intervals along the width direction of the road surface, each of the fastening rods (11) being provided with a clamping hole (12) corresponding to a plurality of annular steel rings (10), the clamping hole (12) being connected to the bottom surface of the fastening rod (11), the annular steel rings (10) being inserted into the clamping hole (12) and being clamped with the clamping hole (12).

3. The soft soil foundation reinforcement structure for a municipal road according to claim 2, characterized in that: The fastening rod (11) is provided with a first air hole (13) along the length direction of the fastening rod (11), and a sliding groove (14) is provided on the side wall of the clamping hole (12). The first air hole (13) is communicated with the sliding groove (14). A section of a plurality of the first air holes (13) located on the same side is connected to a pressure supply component for providing air pressure to the first air holes (13) through a hose component. An arc plate (15) is slidably connected in the sliding groove (14), and a rubber pad (16) is provided on the arc plate (15). The rubber pad (16) is pressed against the side wall of the annular steel ring (10).

4. The soft soil foundation reinforcement structure for a municipal road according to claim 3, characterized in that: The pressure supply assembly includes a first gas one-way valve (17), a return spring (18), a sliding block (19), a guide rod (20) and a rubber bowl (21). The first gas one-way valve (17) is threadedly connected to the fastening rod (11) and communicated with the first air hole (13). The air inlet end of the first gas one-way valve (17) is connected to a gas storage tank (22). The gas storage tank (22) includes a tank body (23) and a plurality of rubber hoses (24) communicated with the tank body (23). The end of the rubber hose (24) is connected to a hard joint (25) corresponding to each of the plurality of first gas one-way valves (17). The hard joint (25) is threadedly connected to the air inlet end of the first gas one-way valve (17). The top surface of the stabilizing pile (4) is provided with a second A blind hole (26), the second blind hole (26) and the sliding block (19) are slidably connected, the rubber bowl (21) is sleeved on the outside of the sliding block (19), the second blind hole (26) is internally threadedly connected to a support ring (27), the sliding block (19) is connected to the guide rod (20), the guide rod (20) passes through the support ring (27) and extends out of the second blind hole (26), the end of the guide rod (20) is connected to a force block (28), one end of the return spring (18) is connected to the force block (28), and the other end is connected to the support ring (27), the side wall of the stabilizing pile (4) is provided with an air outlet (29) connected to the second blind hole (26), and the air outlet (29) is connected to the gas storage tank (22) through an air supply member.

5. The soft soil foundation reinforcement structure for a municipal road according to claim 3, characterized in that: A hanging spring (30) is provided on the top of the arc plate (15), one end of the hanging spring (30) passes through the sliding groove (14) and is connected to the side wall of the first air hole (13). In a natural state, the arc plate (15) is completely located in the sliding groove (14).

6. The soft soil foundation reinforcement structure for a municipal road according to claim 4, characterized in that: The air outlet hole (29) is an internal threaded hole, and the air supply component includes a second gas one-way valve (31), a threaded tube (32) and an air supply pipe. The air supply pipe is a hose, one end of the threaded tube (32) is connected to the air supply pipe, and the other end is threadedly connected to the air outlet hole (29). The end of the air supply pipe away from the threaded tube (32) is connected to the second gas one-way valve (31), and the gas one-way valve is connected to the gas storage tank.

7. The soft soil foundation reinforcement structure for a municipal road according to claim 4, characterized in that: The bottom end of the stabilizing pile (4) is arranged in an inverted cone shape.

8. A method for installing a municipal road soft soil foundation reinforcement structure using the method according to claim 4, characterized in that it comprises the following steps: S1: partially inserting the stabilizing pile (4) into the soft soil layer (1), and connecting the stabilizing rod between two of the stabilizing piles (4); S2: rotating the limiting ring (9) so that the bottom surface of the limiting ring (9) contacts the top of the T-shaped block (7); S3: The annular steel ring (10) is sleeved on the outer circumference of two opposite stabilizing piles (4), and a plurality of the fastening rods (11) are clamped to the annular steel ring (10); S4: placing a load-bearing plate above the plurality of load-bearing blocks (28), so that the top surfaces of the plurality of load-bearing blocks (28) are in contact with the load-bearing plate, and applying force downward to the load-bearing plate multiple times by an excavator until the excavator can no longer press down; S5: dismantling the gas storage tank (22) and the gas supply component, and laying a crushed stone layer (2) and the concrete layer (3) on the soft soil layer (1) in sequence.

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