Soft soil foundation reinforcement drainage structure for road construction

Abstract

The utility model discloses a soft soil foundation reinforcement drainage structure for road construction, which comprises a soft soil foundation, a drainage assembly and an anchoring mechanism, grooves are arranged on the periphery of the soft soil foundation, and the drainage assembly comprises a plastic drainage plate laid in the soft soil foundation. The pipe plate connectors are connected to the outlet ends of the two plastic drainage plates in an inserted mode, the drainage pipeline is connected between the pipe plate connectors in a sleeved mode, geotechnical cloth is laid on the plastic drainage plates outside the soft soil foundation, a sealing film layer is laid on the geotechnical cloth, a soil pressing layer is laid at the upper end of the sealing film layer, and the anchoring mechanism comprises a plurality of anchoring bases which are distributed and connected to the bottom end of the interior of a digging groove in an inserted mode. The pressing plate is rotationally connected to the anchoring base, and the fixing pin is connected to the anchoring base in a threaded mode. According to the utility model, through the design of fixing materials layer by layer and stably connected plastic drainage plates, the stable laying of each layer of materials and the long-term stability of the drainage plates are ensured, the adjustment and rework in construction are reduced, and the construction efficiency and flexibility are improved.

Description

Technical Field

[0001] The utility model belongs to the field of soft soil foundation reinforcement, and specifically relates to a soft soil foundation reinforcement drainage structure for road construction. Background Art

[0002] Soft soil foundation refers to soil with large pores between soil particles, high water content, low bearing capacity and high compressibility. In the process of road construction, the treatment of soft soil foundation becomes a key issue. If the soft soil foundation is not reinforced, a series of problems such as foundation settlement, road cracking, and mud overflow are likely to occur, which seriously affects the service life and safety of the road.

[0003] In actual engineering, vacuum preloading is one of the important technologies to solve the problem of soft soil foundation. Its purpose is to improve the strength and stability of the foundation soil and reduce the water content of the soil, thereby enhancing the bearing capacity of the foundation and reducing the foundation settlement.

[0004] During construction, geotextiles and multi-layer sealing membranes need to be laid, but during the laying process, the edges of each layer of material cannot be firmly fixed, resulting in the previous layer of material easily falling off or shifting when the next layer of material is laid. This situation will lead to frequent adjustments and rework during the construction process, reducing construction efficiency. In addition, when laying plastic drain boards, tube-to-sheet connectors are needed to connect the two adjacent plastic drain board outlets outside the soft soil layer, and construction workers are required to use nail guns to fix the tube-to-sheet connectors and plastic drain boards together. However, the length of the nail gun's power cord limits the scope of construction, and construction workers must operate near a power socket and cannot move flexibly, especially in large-scale construction sites, which increases the difficulty of construction.

[0005] Therefore, the utility model provides a soft soil foundation reinforcement drainage structure for road construction. Utility Model Content

[0006] The utility model designs a soft soil foundation reinforcement drainage structure for road construction to solve the problems existing in the above-mentioned background technology.

[0007] In order to achieve the above technical effects, the utility model is implemented through the following technical solutions: a soft soil foundation reinforcement drainage structure for road construction, including a soft soil foundation, a drainage component and an anchoring mechanism.

[0008] Furthermore, the soft soil foundation is provided with trenches around it; the drainage assembly includes a plastic drainage board laid in the soft soil foundation, a tube-sheet connector plugged into the outlet ends of the two plastic drainage boards, and a drainage pipeline sleeved between the tube-sheet connectors; a geotextile is laid above the plastic drainage board outside the soft soil foundation; a sealing film layer is laid above the geotextile; a pressure soil layer is laid on the upper end of the sealing film layer; the anchoring mechanism includes a plurality of anchoring bases distributed and plugged into the bottom end of the trench, a pressure plate rotatably connected to the anchoring base, and a fixing pin threadedly connected to the anchoring base.

[0009] Furthermore, the sealing membrane layer includes a first sealing membrane laid on the geotextile and a second sealing membrane laid on the first sealing membrane.

[0010] Furthermore, the edges of the geotextile, the first sealing membrane and the second sealing membrane are pressed between the anchor base and the pressure plate; the soil and sand filled in the trench are pressed on the upper end of the edge of the first sealing membrane.

[0011] Furthermore, the tube sheet connector includes a water filter pipe sleeved inside the drainage pipe, connecting plates arranged at both ends of the water filter pipe, limit frames fixedly connected to both sides of the connecting plates, threaded nails threadedly connected to both sides of the connecting plates and arranged on the inner side of the limit frames, and the interior of the connecting plate is a hollow structure and communicates with the interior of the water filter pipe.

[0012] Furthermore, the drainage pipeline includes a connecting pipe sleeved on the outlet end between the two filter pipes, and a main pipe sleeved on the outermost filter pipe. The outlet end of the main pipe passes through the geotextile, the sealing membrane layer and the compacted soil layer to be connected to an external jet pump.

[0013] Furthermore, a plurality of anchoring nails are fixedly connected to the bottom end of the anchoring base.

[0014] Furthermore, a through slot is provided on the pressure plate; the pin head of the fixing pin adopts a diamond structure, and the length of the diamond structure is smaller than the length of the through slot and larger than the width of the through slot, and the width of the diamond structure is smaller than the width of the through slot.

[0015] The beneficial effects of the utility model are:

[0016] 1. In the process of laying geotextile, the first sealing membrane and the second sealing membrane, the anchoring mechanism fixes each layer of material on the foundation layer by layer through the pressing plate to prevent the previous layer of material from falling off or shifting when laying the next layer of material. This layer-by-layer fixing design ensures that each layer of material can be laid stably, reduces adjustments and rework during construction, and improves construction efficiency;

[0017] 2. In the utility model, the outlet ends of two adjacent plastic drain boards are plugged into the connecting plate of the tube-to-plate connector and fixed with threaded nails. This design ensures the stability of the drain boards in long-term use and avoids excessive reliance on power nail guns, allowing construction workers to move and operate more freely in large construction sites, thereby improving construction flexibility. In addition, the limit frame can prevent the threaded nails from falling off during the construction process, reducing the trouble of construction workers needing to re-find and install screws, thereby improving construction efficiency and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall internal structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the other side of the internal overall structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the distribution and installation of the anchoring mechanism of the utility model;

[0022] Figure 4 It is a schematic diagram of the anchoring mechanism of the utility model;

[0023] Figure 5 This is a connection relationship diagram of the tube-to-sheet connector of the utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Soft soil foundation; 11. Trenching; 12. Geotextile; 13. Sealing membrane layer; 131. First sealing membrane; 132. Second sealing membrane; 14. Compressed soil layer; 2. Drainage assembly; 21. Plastic drain board; 22. Tube-sheet connector; 221. Filter pipe; 222. Connecting plate; 223. Limiting frame; 224. Threaded nail; 23. Drainage pipeline; 231. Connecting pipe; 232. Main pipe; 3. Anchoring mechanism; 31. Anchoring base; 311. Anchoring nail; 32. Pressure plate; 321. Through groove; 33. Fixing pin. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] See also Figures 1 to 5 As shown, a soft soil foundation reinforcement drainage structure for road construction includes a soft soil foundation 1, a drainage component 2 and an anchoring mechanism 3, characterized in that: the soft soil foundation 1 is provided with a trench 11 around it; the drainage component 2 includes a plastic drainage board 21 laid in the soft soil foundation 1, a tube-sheet connector 22 plugged into the outlet ends of the two plastic drainage boards 21, and a drainage pipeline 23 sleeved between the tube-sheet connectors 22; a geotextile 12 is laid above the plastic drainage board 21 outside the soft soil foundation 1; a sealing film layer 13 is laid above the geotextile 12; a pressure soil layer 14 is laid on the upper end of the sealing film layer 13; the anchoring mechanism 3 includes a plurality of anchoring bases 31 distributed and plugged into the bottom end of the trench 11, a pressing plate 32 rotatably connected to the anchoring base 31, and a fixing pin 33 threadedly connected to the anchoring base 31.

[0029] The anchoring base 31 is provided with a support, and both sides of one end of the pressing plate 32 are provided with rotating shafts which are mounted in the rotating groove of the support.

[0030] The sealing film layer 13 includes a first sealing film 131 laid on the geotextile 12 and a second sealing film 132 laid on the first sealing film 131. The sealing film layer 13 prevents groundwater or surface water from penetrating into the drainage structure, thereby improving the efficiency and reliability of the drainage system.

[0031] The edges of the geotextile 12 , the first sealing membrane 131 and the second sealing membrane 132 are pressed between the anchor base 31 and the pressing plate 32 ; soil and sand filled in the trench 11 are pressed on the upper end of the edge of the first sealing membrane 131 .

[0032] The tube-plate connector 22 includes a water filter tube 221 sleeved inside the drainage pipe 23, a connecting plate 222 disposed at both ends of the water filter tube 221, a stop frame 223 fixedly connected to both sides of the connecting plate 222, and a screw 224 threadedly connected to both sides of the connecting plate 222 and disposed inside the stop frame 223. The interior of the connecting plate 222 is a hollow structure and communicates with the interior of the water filter tube 221. Even if the screw 224 is screwed to the connecting plate 222, it is easy to loosen or fall off during the construction process. The stop frame 223 ensures that the screw 224 will not fall off the connecting plate 222, reducing the trouble of construction personnel needing to find and install screws again, thereby improving construction efficiency and convenience.

[0033] The drainage pipeline 23 includes a connecting pipe 231 sleeved at the outlet end between the two water filter pipes 221, and a main pipe 232 sleeved at the outlet end of the outermost tube plate connector 22. The water outlet end of the main pipe 232 passes through the sealing membrane layer 13 and the pressure soil layer 14 and is connected to an external jet pump.

[0034] The bottom end of the anchor base 31 is fixedly connected with a plurality of anchor nails 311. The anchor nails 311 are inserted into the soft soil foundation to provide additional fixing force, so that the anchor base 31 is more stable and prevents displacement or loosening due to changes in the foundation during construction or use.

[0035] The pressing plate 32 is provided with a through slot 321; the pin head of the fixing pin 33 adopts a rhombus structure, and the length of the rhombus structure is less than the length of the through slot 321 and greater than the width of the through slot 321, and the width of the rhombus structure is less than the width of the through slot 321. When the long axis of the pin head of the fixing pin 33 is parallel to the through slot 321, the through slot 321 of the pressing plate 32 can pass through the fixing pin 33 to flip. If the pressing plate 32 is pressed down to the lower end of the pin head, the long axis of the pin head and the through slot 321 are in a cross state, and the pin head will limit the pressing plate 32 to prevent the pressing plate 32 from rotating.

[0036] Example 2

[0037] The operating principle of this utility model is:

[0038] In road construction, the vacuum preloading method is often required to reinforce and drain the soft soil foundation. The construction team needs to use relevant mechanical equipment to level the surface of the soft soil foundation first to facilitate the placement of machinery and tools. After the machinery and tools are in place, the front end of the plastic drain board is booted to prevent silt from entering the drainage channel or tearing the drainage board filter membrane. Then, positioning is performed, and a casing is driven into the soft soil foundation, and then the plastic drain board is inserted into the casing. After the plastic drain board is inserted, the casing is pulled out, and the plastic drain board remains in the stratum and the plastic drain board at the outer end of the stratum is cut off, leaving a section of the end of the plastic drain board outside the soft soil foundation, and then the machinery and tools are moved.

[0039] The construction personnel plug the outlet ends of two adjacent plastic drain boards 21 into the connecting plate 222 of the tube-to-plate connector 22, and rotate the screw 224 to fix the plastic drain board 21 and the connecting plate 222, ensuring the stability of the drain board in long-term use and preventing it from falling off due to external forces. The construction personnel then connect the filter pipes 221 between the adjacent plastic drain boards 21 through the drainage pipeline 23, connect the filter pipe 221 at the outermost end to the main pipe 232, complete the laying of the drainage pipeline 23, and bury the relevant detection instruments.

[0040] After the laying of the drainage pipe 23 is completed, the construction personnel distribute and fix the anchor mechanism 3 in the trench 11, and then lay the geotextile 12 on top of the drainage pipe 23, and press the edge of the geotextile 12 under the pressure plate 32 of the anchor mechanism 3. After the laying of the geotextile 23 is completed, the construction personnel continue to lay the first sealing membrane 131 on top of the geotextile 23, and continue to press the edge of the first sealing membrane 131 under the pressure plate 32 of the anchor mechanism 3. Then the construction personnel continue to lay the second sealing membrane 132 on the first sealing membrane 131, and press the edge of the second sealing membrane 132 under the pressure plate 32 of the anchor mechanism 3. In the process of laying the geotextile 12, the first sealing membrane 131 and the second sealing membrane 132, the edge of each layer of material needs to be fixed. The anchor mechanism 3 fixes each layer of material on the foundation layer by layer through the pressure plate 32 to prevent the previous layer of material from falling off or shifting when the next layer of material is laid. In actual projects, the number of sealing membranes to be laid is determined according to the specific conditions of the soft soil layer at the construction site, and the main pipe 232 is connected to the external jet pump through the geotextile 23 and the sealing membrane layer 13. After the sealing membrane is laid, the construction personnel fill the trench 11 with soil and sand. In the long-term process of reinforcement and drainage of the soft soil foundation, the anchoring mechanism 3 works together with the soil and sand filled in the trench 11 to provide continuous fixing and compression force, ensuring the stability and reliability of the entire structure over a long period of time.

[0041] After the trench 11 is filled, pre-vacuuming begins. When the monitoring instrument detects that the vacuum pressure under the membrane has stably reached 80KPA, the construction personnel continue to lay the compacted soil layer 14 on the first sealing membrane 131, and accelerate the consolidation and settlement process of the soft soil foundation by applying additional weight, and can reduce the settlement of the foundation before actual use, thereby improving the bearing capacity and stability of the foundation.

Claims

1. A soft soil foundation reinforcement drainage structure for road construction, comprising a soft soil foundation (1), a drainage component (2) and an anchoring mechanism (3), characterized in that: The soft soil foundation (1) is provided with a trench (11) around the periphery; the drainage assembly (2) comprises a plastic drainage board (21) laid in the soft soil foundation (1), a tube-sheet connector (22) plugged into the outlet ends of the two plastic drainage boards (21), and a drainage pipeline (23) sleeved between the tube-sheet connectors (22); a geotextile (12) is laid above the plastic drainage board (21) outside the soft soil foundation (1); a sealing film layer (13) is laid above the geotextile (12); a pressure soil layer (14) is laid on the upper end of the sealing film layer (13); the anchoring mechanism (3) comprises a plurality of anchoring bases (31) distributed and plugged into the bottom end of the trench (11), a pressure plate (32) rotatably connected to the anchoring base (31), and a fixing pin (33) threadedly connected to the anchoring base (31).

2. The soft soil foundation reinforcement drainage structure for road construction according to claim 1, characterized in that: The sealing film layer (13) comprises a first sealing film (131) laid on the geotextile (12) and a second sealing film (132) laid on the first sealing film (131).

3. A soft soil foundation reinforcement drainage structure for road construction according to claim 2, characterized in that: The edges of the geotextile (12), the first sealing membrane (131) and the second sealing membrane (132) are pressed between the anchor base (31) and the pressure plate (32); soil and sand filled in the trench (11) are pressed on the upper end of the edge of the first sealing membrane (131).

4. The soft soil foundation reinforcement drainage structure for road construction according to claim 1, characterized in that: The tube plate connector (22) comprises a water filter tube (221) sleeved inside the drainage pipeline (23), connecting plates (222) arranged at both ends of the water filter tube (221), limiting frames (223) fixedly connected to both sides of the connecting plate (222), and threaded nails (224) threadedly connected to both sides of the connecting plate (222) and arranged on the inner side of the limiting frames (223); the interior of the connecting plate (222) is a hollow structure and communicates with the interior of the water filter tube (221).

5. The soft soil foundation reinforcement drainage structure for road construction according to claim 1, characterized in that: The drainage pipeline (23) comprises a connecting pipe (231) sleeved on the outlet end between the two water filter pipes (221), and a main pipe (232) sleeved on the outermost water filter pipe (221). The outlet end of the main pipe (232) passes through the geotextile (12), the sealing membrane layer (13) and the compacting layer (14) and is connected to an external jet pump.

6. The soft soil foundation reinforcement drainage structure for road construction according to claim 1, characterized in that: A plurality of anchoring nails (311) are fixedly connected to the bottom end of the anchoring base (31).

7. The soft soil foundation reinforcement drainage structure for road construction according to claim 1, characterized in that: The pressing plate (32) is provided with a through slot (321); the pin head of the fixing pin (33) adopts a rhombus structure, and the length of the rhombus structure is less than the length of the through slot (321) and greater than the width of the through slot (321), and the width of the rhombus structure is less than the width of the through slot (321).

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