Soft soil roadbed reinforcing device

Abstract

The invention discloses a soft soil roadbed reinforcing device, and relates to the technical field of road supporting, the soft soil roadbed reinforcing device comprises a first supporting plate and a second supporting plate, the second supporting plate is detachably mounted at the top of the first supporting plate, the soft soil roadbed reinforcing device further comprises a reinforcing pile, the side edge of the first supporting plate is provided with a hoop, and the reinforcing pile comprises a pile shell, a pile cover, a moving plate, barbs and a driving column; a plurality of flexible branches are installed at the ends, away from the moving plate, of the barbs, the included angles between the axes of the barbs and the axes of the flexible branches in the direction from top to bottom are increased step by step, and the lengths of the flexible branches in the direction from top to bottom are increased step by step. The pile body is prevented from sliding; the middle-layer flexible branch increases the friction area of a soil body, the flexible branch with the long lower side and the large angle improves the pulling resistance, the length and the angle of the flexible branch are matched with humidity changes in a layered mode, and the anchoring performance in the high-humidity soft soil roadbed is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of road support, in particular to a soft soil roadbed reinforcement device. Background Art

[0002] The roadbed is the foundational structure beneath a railway track or road surface. Constructed according to route location and specific technical requirements, the strip-shaped structure serves as the road surface foundation and is the foundation of both railways and highways. With the development of society and the increasing number of vehicles, the load-bearing capacity of the roadbed has become increasingly demanding. With the ongoing road construction in various regions, areas with soft soil are often encountered. These areas must be reinforced to meet vehicle travel requirements. Otherwise, the soft road sections are prone to collapse or sag, resulting in uneven road surfaces.

[0003] A prior art Chinese invention patent, published with publication number CN113481776A, discloses a soft soil roadbed reinforcement device comprising: a first support plate horizontally disposed on the surface of the soft soil roadbed, a pair of vertical reinforcement piles detachably mounted on the first support plate, the bottoms of the reinforcement piles inserted into the soft soil roadbed and the tops detachably connected to the first support plate; an arched second support plate disposed above the first support plate and detachably connected to the first support plate; and a pair of reinforcement plates, each with an adjustable length connecting rod disposed between them, the bottoms of the pair of reinforcement plates detachably connected to the second support plate and the tops extending obliquely upward and toward each other. This device for reinforcing a medium-soft soil roadbed is easy to assemble and provides excellent support.

[0004] However, when faced with some soft soil roadbeds with high humidity, the internal humidity of the soil is high, and as the depth of the soil increases, the soil will become softer and wetter. On this basis, it may not be possible to fix the reinforcement piles and the barbs in the reinforcement piles in the soil alone, causing the position of the first support plate to shift, and ultimately causing the road surface to collapse or become uneven. Summary of the Invention

[0005] The embodiments of the present application provide a soft soil roadbed reinforcement device, which solves the problem in the prior art that fixation in high-humidity soil may not be achieved only by reinforcement piles and barbs in the reinforcement piles, causing the position of the first support plate to shift, and ultimately causing road surface collapse or unevenness.

[0006] The embodiment of the present application provides a soft soil roadbed reinforcement device, including a first support plate and a second support plate, the first support plate is rectangular, the second support plate is arched, and the second support plate is detachably mounted on the top of the first support plate, and also includes a reinforcement pile, the side of the first support plate is provided with a clamp, the clamp can lock and fix the reinforcement pile, the reinforcement pile includes a pile shell, a pile cover, a movable plate, a barb and a driving column, the pile shell is hollow inside and has an open top, the pile cover is fixedly connected to the top of the pile shell by a thread, the movable plate is slidably mounted inside the pile shell, The barbs are fixed on the movable plate, and the barbs are divided into three layers of upper, middle and lower layers from top to bottom on the movable plate. A through hole for the movement of the barbs is also provided on the side wall of the pile shell. The driving column is slidably installed inside the pile shell and is located on the upper side of the movable plate. The driving column is a cone that is wide at the top and narrow at the bottom. When the driving column moves downward, it can drive the movable plate to move and allow the barbs to pass through the through hole. A plurality of flexible branches are installed on the end of the barb away from the movable plate, and the angle between the axis of the barb and the axis of the flexible branch increases step by step from top to bottom, and the length of the flexible branch increases step by step from top to bottom.

[0007] Furthermore, the length of the barbs in the upper layer is 8-10 cm, the length of the flexible branches is 3 cm, and the angle between the axis of the flexible branches and the axis of the barbs is 20 degrees; the length of the barbs in the middle layer is 12-15 cm, the length of the flexible branches is 5 cm, and the angle between the axis of the flexible branches and the axis of the barbs is 40 degrees; the length of the barbs in the lower layer is 15-20 cm, the length of the flexible branches is 8 cm, and the angle between the axis of the flexible branches and the axis of the barbs is 50 degrees.

[0008] Furthermore, an elastic net is installed between two adjacent flexible branches on each barb, and the elastic coefficients of the elastic nets installed on the upper, middle and lower layers of barbs decrease step by step from top to bottom.

[0009] Furthermore, the elastic net installed on the flexible branches of the upper barbs is in a diamond grid shape; the elastic net installed on the flexible branches of the middle barbs is in a hexagonal honeycomb grid shape; and the elastic net installed on the flexible branches of the lower barbs is radial.

[0010] Furthermore, the flexible branches of the barbs on the middle layer form a double-layer elastic net, and the flexible branches of the barbs on the lower layer form a triple-layer elastic net.

[0011] Furthermore, the double-layer elastic net formed between the flexible branches of the barbs on the middle layer is filled with silicon dioxide powder; the triple-layer elastic net formed between the flexible branches of the barbs on the lower layer is filled with silicon dioxide particles.

[0012] Furthermore, two reinforcement plates are symmetrically installed on the second support plate, a length-adjustable connecting rod is installed between the two reinforcement plates, a support rod is installed between each reinforcement plate and the first support plate, one end of the support rod is hinged to the first support plate, and the other end of the support rod is fixedly connected to the reinforcement plate.

[0013] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: First, the present invention addresses the following characteristics of soft soil roadbeds with high humidity: surface soil: low humidity, with a certain degree of hardness, but prone to cracking; middle soil: with increasing humidity, the soil gradually softens and its bearing capacity decreases; deep soil: close to saturation, with strong fluidity and poor anchoring strength; short upper flexible branches with small angles penetrate the hard crust layer to prevent pile sliding; middle flexible branches increase the friction area of the soil, while long lower flexible branches with large angles increase pullout resistance. The length and angle of the flexible branches are layered to match humidity changes, significantly improving the anchoring performance in high-humidity soft soil roadbeds and optimizing the reinforcement effect on the soft soil roadbed. Secondly, the present invention embeds an upper diamond-shaped elastic mesh into the cracks of the hard crust layer on the surface of the soft soil roadbed, resisting cracking of the hard crust and reducing the risk of local crushing of the hard crust. The middle hexagonal honeycomb mesh elastic mesh wraps around the softened soil, capturing soil particles, increasing friction resistance, and restraining the lateral movement of the softened soil. The lower radial elastic mesh reduces the drag force of the flowing soil and anchors the flowing soil, achieving three-dimensional anchoring. This makes the device suitable for use in high-humidity scenarios such as swamps and river bank protection, and has engineering universality. Third, the number of elastic net layers increases with depth, matching the mechanical gradient of the soil from "hard-soft-flow". The double-layer elastic net in the middle layer forms a "sandwich structure" to capture soil particles, further increasing friction resistance and enhancing the soil's anti-cracking, friction-increasing and anti-flow capabilities. Fourthly, the present invention forms silica gel after the middle layer of silica powder absorbs soil moisture, and the silica gel fills the soil pores, improves the cohesion of the middle layer of soil, and the gel layer blocks the infiltration of moisture, reducing the risk of softening of the surface hard shell layer; after the lower layer of silica particles absorb water, the particles expand to twice their original volume, squeeze the soil and fill the gaps between the meshes to form dense clumps, and the expansion of the particles generates radial pressure, which improves the anchoring force of the lower layer. The porous structure absorbs free water, accelerates soil consolidation, and reduces the settlement rate. The water-absorbing material reduces the free water content of the soil, inhibits the development of plastic state, and improves long-term stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 A cross-sectional view of the reinforcement pile of the present invention in a first working state; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 is a cross-sectional view of the reinforcement pile of the present invention in the second working state; Figure 5 Schematic diagram of the three-dimensional structure of the upper, middle and lower layers of barbs of the present invention; Figure 6 Schematic diagram of the three-dimensional structure of the barb in the second embodiment of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the upper, middle and lower layers of barbs in Example 3 of the present invention.

[0015] In the figure: 100, first support plate; 110, clamp; 120, second support plate; 130, reinforcement pile; 131, pile shell; 132, pile cover; 133, movable plate; 134, barb; 135, drive column; 136, through hole; 140, reinforcement plate; 150, connecting rod; 160, support rod; 200, flexible branch; 210, elastic net. DETAILED DESCRIPTION

[0016] To facilitate understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0017] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are for illustrative purposes only and do not represent the only implementation method.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains; the terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0019] Example 1, as Figure 1-Figure 5As shown, the embodiment of the present application provides a soft soil roadbed reinforcement device, including a first support plate 100 and a second support plate 120, the first support plate 100 is a rectangular parallelepiped, the second support plate 120 is arched, and the second support plate 120 is detachably mounted on the top of the first support plate 100, and also includes a reinforcement pile 130, the side of the first support plate 100 is provided with a clamp 110, the clamp 110 can lock and fix the reinforcement pile 130, the reinforcement pile 130 includes a pile shell 131, a pile cover 132, a movable plate 133, a barb 134 and a driving column 135, the pile shell 131 is hollow inside and has an open top, the pile cover 132 is fixedly connected to the top of the pile shell 131 by threads, and the movable plate 133 is slidably mounted in the pile shell 131 The barbs 134 are fixed on the movable plate 133, and the barbs 134 are divided into three layers from top to bottom on the movable plate 133. A through hole 136 for the movement of the barbs 134 is also provided on the side wall of the pile shell 131. The driving column 135 is slidably installed inside the pile shell 131 and is located on the upper side of the movable plate 133. The driving column 135 is a cone that is wide at the top and narrow at the bottom. When the driving column 135 moves downward, it can drive the movable plate 133 to displace and allow the barbs 134 to pass through the through hole 136. The end of the barb 134 away from the movable plate 133 is equipped with a plurality of flexible branches 200, and the angle between the axis of the barb 134 and the axis of the flexible branch 200 increases step by step from top to bottom, and the length of the flexible branch 200 increases step by step from top to bottom.

[0020] When in use, first dig a groove in the construction ground, then apply pressure on the reinforcement pile 130, push the reinforcement pile 130 deep into the bottom of the groove, then open the pile cover 132, and move the driving column 135 downward by applying external force (the driving column 135 can be moved and locked in position by applying pressure through filling soil). After the driving column 135 moves downward, it drives the movable plate 133 to move until the barb 134 extends out of the through hole 136 and inserts into the soft soil. Then, the first support plate 100 is placed at the bottom of the groove, and the first support plate 100 and the reinforcement pile 130 are connected and fixed by the clamp 110. Then, the second support plate 120 is installed on the top of the first support plate 100, and then the roadbed material is filled between the second support plate 120 and the first support plate 100 and compacted. Then, the excavated groove is filled and compacted to complete the installation of the reinforcement device. When facing long road construction, this device can be arranged in sequence and the above steps can be repeated.

[0021] Preferably, the barb 134 of the upper layer is 8-10 cm long, the flexible branch 200 is 3 cm long, and the angle between the axis of the flexible branch 200 and the axis of the barb 134 is 20 degrees; the barb 134 of the middle layer is 12-15 cm long, the flexible branch 200 is 5 cm long, and the angle between the axis of the flexible branch 200 and the axis of the barb 134 is 40 degrees; the barb 134 of the lower layer is 15-20 cm long, the flexible branch 200 is 8 cm long, and the angle between the axis of the flexible branch 200 and the axis of the barb 134 is 50 degrees.

[0022] Preferably, two reinforcement plates 140 are symmetrically installed on the second support plate 120, and a length-adjustable connecting rod 150 is installed between the two reinforcement plates 140. A support rod 160 is installed between each reinforcement plate 140 and the first support plate 100. One end of the support rod 160 is hinged to the first support plate 100, and the other end of the support rod 160 is fixedly connected to the reinforcement plate 140. The reinforcement plate 140 can strengthen the support for the second support plate 120 and improve its structural strength, and the gap between the two reinforcement plates 140 is adjustable to adjust the supporting strength. This is a prior art and will not be elaborated on.

[0023] The present application also provides a method for using a soft soil roadbed processing device, comprising the following steps: S1. Dig a trench on the construction ground and level and compact the bottom of the trench; S2. Lower the reinforcement pile 130 so that the bottom of the reinforcement pile 130 is vertically inserted into the compacted soft soil roadbed. Then, apply pressure to the reinforcement pile 130 to push the reinforcement pile 130 deep into the bottom of the groove. Then, open the pile cover 132 and move the driving column 135 downward by applying external force. After the driving column 135 moves downward, it drives the movable plate 133 to move until the barb 134 extends out of the through hole 136 and inserts into the soft soil. Then, lower the first support plate 100 so that the reinforcement pile 130 is fixedly connected to the first support plate 100 through the clamp 110. Then, place the second support plate 120 on the first support plate 100 and connect it to the second support plate 120. S3, adding soft soil roadbed material to the gap between the first support plate 100 and the second support plate 120 and compacting it; S4. Repeat placing multiple first support plates 100 and second support plates 120 in sequence according to steps 1, 2, and 3, so that the tail end of the front first support plate 100 corresponds to the head end of the rear first support plate 100, and the tail end of the front second support plate 120 corresponds to the head end of the rear second support plate 120; S6. Add the road cushion material or roadbed material between each pair of reinforcement plates 140 to the same height as the reinforcement plates 140 , fill the other gaps in the groove with soft soil roadbed material, and then lay the road surface on the cushion material.

[0024] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: By targeting the characteristics of soft soil roadbed with high humidity: surface soil: low humidity, certain hardness, but easy to crack; middle soil: as humidity increases, the soil gradually softens and the bearing capacity decreases; deep soil: close to saturation, the soil has strong fluidity and poor anchoring force; the upper short and small-angle flexible branches 200 penetrate the hard shell layer to prevent the pile body from sliding; the middle-layer flexible branches 200 increase the friction area of the soil, and the lower long and large-angle flexible branches 200 increase the pull-out resistance. The length and angle of the flexible branches 200 are layered to match the humidity changes, which significantly improves the anchoring performance in high-humidity soft soil roadbed and optimizes the reinforcement effect of the soft soil roadbed.

[0025] In the second embodiment, in order to further improve the anchoring effect of the reinforcement pile 130 in the soft soil roadbed, Figure 6 As shown, further improvements are made to Example 1: Preferably, an elastic net 210 is installed between two adjacent flexible branches 200 on each of the barbs 134, and the elastic coefficients of the elastic nets 210 installed on the upper, middle and lower layers of barbs 134 decrease step by step from top to bottom.

[0026] Preferably, the elastic net 210 installed on the flexible branches 200 of the barbs 134 of the upper layer is in a diamond grid shape (not shown in the figure); the elastic net 210 installed on the flexible branches 200 of the barbs 134 of the middle layer is in a hexagonal honeycomb grid shape (not shown in the figure); the elastic net 210 installed on the flexible branches 200 of the barbs 134 of the lower layer is radial (not shown in the figure).

[0027] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: The upper diamond-shaped elastic net 210 is embedded in the cracks of the hard crust layer on the surface of the soft soil roadbed to resist cracking of the hard crust layer and reduce the risk of local crushing of the hard crust layer; the middle hexagonal honeycomb grid elastic net 210 wraps the surrounding softened soil, the honeycomb net captures soil particles, increases friction resistance, and constrains the lateral movement of the softened soil; the lower radial elastic net 210 reduces the drag force of the flowing soil, anchors the flowing soil, and realizes three-dimensional anchoring, so that this device can be used in similar high-humidity scenarios such as swamps and river bank slope protection, and has engineering universality.

[0028] Example 3, as Figure 7 As shown, further improvements are made to Example 2: Preferably, a double-layer elastic net 210 is formed between the flexible branches 200 of the barbs 134 on the middle layer, and a triple-layer elastic net 210 is formed between the flexible branches 200 of the barbs 134 on the lower layer.

[0029] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: The number of layers of elastic net 210 increases with depth, matching the mechanical gradient of the soil from "hard-soft-flow". The double-layer elastic net 210 in the middle layer forms a "sandwich structure" to capture soil particles, further increasing friction resistance and enhancing the soil's resistance to cracking, friction increase, and flow resistance.

[0030] In the fourth embodiment, in order to optimize the anchoring force of the reinforcement pile 130 in the soft soil roadbed, further improvements are made to the third embodiment: Preferably, the flexible branches 200 of the barbs 134 on the middle layer form a double-layer elastic net 210 filled with silica powder, which quickly absorbs soil moisture to form a gel and bond the soil particles; the flexible branches 200 of the barbs 134 on the lower layer form a three-layer elastic net 210 filled with silica particles, which expand and clump after absorbing water to form a "soil-net-silicon" composite anchor body.

[0031] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: The silica powder in the middle layer absorbs soil moisture to form silica gel, which fills the soil pores and improves the cohesion of the middle soil. The gel layer blocks water infiltration and reduces the risk of softening of the surface hard crust. The silica particles in the lower layer absorb water and expand to twice their original volume, squeezing the soil and filling the gaps between the meshes to form dense clumps. The expanded particles generate radial pressure, which improves the anchoring force of the lower layer. The porous structure absorbs free water, accelerates soil consolidation, and reduces the settlement rate. The water-absorbing material reduces the free water content of the soil, inhibits the development of plastic flow, and improves long-term stability.

[0032] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A soft soil roadbed reinforcement device, comprising a first support plate (100) and a second support plate (120), wherein the first support plate (100) is in the shape of a rectangular parallelepiped, the second support plate (120) is in the shape of an arch, and the second support plate (120) is detachably mounted on the top of the first support plate (100), characterized in that: The invention also includes a reinforcement pile (130), wherein the side of the first support plate (100) is provided with a clamp (110), and the clamp (110) can lock and fix the reinforcement pile (130), and the reinforcement pile (130) includes a pile shell (131), a pile cover (132), a movable plate (133), a barb (134) and a driving column (135), wherein the pile shell (131) is hollow inside and has an open top, and the pile cover (132) is fixedly connected to the top of the pile shell (131) by a thread, and the movable plate (133) is slidably mounted inside the pile shell (131), and the barb (134) is fixed on the movable plate (133), and a plurality of barbs (134) are divided into upper, middle and lower parts from top to bottom on the movable plate (133). The pile shell (131) has three layers, and a through hole (136) for the barb (134) to move is further provided on the side wall of the pile shell (131). The driving column (135) is slidably mounted inside the pile shell (131) and located on the upper side of the movable plate (133). The driving column (135) is a cone that is wide at the top and narrow at the bottom. When the driving column (135) moves downward, it can drive the movable plate (133) to move and allow the barb (134) to pass through the through hole (136). A plurality of flexible branches (200) are installed at one end of the barb (134) away from the movable plate (133), and the angle between the axis of the barb (134) and the axis of the flexible branch (200) increases step by step from top to bottom, and the length of the flexible branch (200) increases step by step from top to bottom.

2. A soft soil roadbed reinforcement device according to claim 1, characterized in that: The barbs (134) of the upper layer are 8-10 cm long, the flexible branches (200) are 3 cm long, and the angle between the axis of the flexible branches (200) and the axis of the barbs (134) is 20 degrees; the barbs (134) of the middle layer are 12-15 cm long, the flexible branches (200) are 5 cm long, and the angle between the axis of the flexible branches (200) and the axis of the barbs (134) is 40 degrees; the barbs (134) of the lower layer are 15-20 cm long, the flexible branches (200) are 8 cm long, and the angle between the axis of the flexible branches (200) and the axis of the barbs (134) is 50 degrees.

3. The soft soil roadbed reinforcement device according to claim 1, characterized in that: An elastic net (210) is installed between two adjacent flexible branches (200) on each barb (134), and the elastic coefficients of the elastic nets (210) installed on the upper, middle and lower layers of barbs (134) decrease step by step from top to bottom.

4. The soft soil roadbed reinforcement device according to claim 3, characterized in that: The elastic net (210) installed on the flexible branches (200) of the upper barbs (134) is in a diamond grid shape; the elastic net (210) installed on the flexible branches (200) of the middle barbs (134) is in a hexagonal honeycomb grid shape; and the elastic net (210) installed on the flexible branches (200) of the lower barbs (134) is in a radial shape.

5. The soft soil roadbed reinforcement device according to claim 3, characterized in that: The flexible branches (200) of the barbs (134) on the middle layer form a double-layer elastic net (210), and the flexible branches (200) of the barbs (134) on the lower layer form a triple-layer elastic net (210).

6. The soft soil roadbed reinforcement device according to claim 5, characterized in that: The flexible branches (200) of the barbs (134) on the middle layer form a double-layer elastic net (210) filled with silicon dioxide powder; the flexible branches (200) of the barbs (134) on the lower layer form a triple-layer elastic net (210) filled with silicon dioxide particles.

7. The soft soil roadbed reinforcement device according to claim 1, characterized in that: Two reinforcement plates (140) are symmetrically mounted on the second support plate (120), a length-adjustable connecting rod (150) is mounted between the two reinforcement plates (140), a support rod (160) is mounted between each reinforcement plate (140) and the first support plate (100), one end of the support rod (160) is hinged to the first support plate (100), and the other end of the support rod (160) is fixedly connected to the reinforcement plate (140).

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