A construction method for strengthening and consolidating soft roadbed

Abstract

A construction method for strengthening and consolidating a soft roadbed relates to the technical field of road paving, including site testing, pre-construction preparation, drainage and consolidation, secondary reinforcement and construction inspection. The invention has strong practicality. By conducting site testing and pre-construction preparation, the actual conditions of the construction site can be mastered, and later operations can be carried out scientifically and effectively. Excess moisture in the soft soil layer under the roadbed is removed by drainage and consolidation and secondary reinforcement, and the soil layer after drainage is reinforced to improve the supporting capacity of the roadbed. Post-construction inspection is carried out to eliminate construction hazards and improve safety. A soft roadbed consolidation device is used during drainage and consolidation to efficiently drain moisture in the soil layer and improve construction quality. By arranging an extrusion device on the soft roadbed consolidation device, moisture in the soil layer can be quickly drained and the soil in the soil layer can be made more compact and stable. The drainage device can quickly drain the squeezed moisture, improve drainage efficiency, and the soft roadbed consolidation device can be reused to avoid waste and environmental pollution.

Description

Technical Field

[0001] The invention relates to the technical field of road paving, in particular to a construction method for strengthening and consolidating a soft roadbed. Background Art

[0002] As is known to all, soft roadbed refers to a weak soil layer with low strength and high compression. The reasons for the formation of soft roadbed are complex. The water content in the soft soil below is high, which will cause the fill and structures on the soft roadbed to be unstable and sink. If the soft roadbed is not handled properly during construction, it will affect the stability and bearing capacity of the highway. Using traditional methods to drain and reinforce the soft roadbed takes a long time, increases the working hours of workers, is time-consuming and labor-intensive, and affects the construction progress. In addition, a large amount of large equipment is required to enter the construction site during the compaction and pressurization process, which also increases the economic cost of the construction unit. Summary of the Invention

[0003] In order to overcome the shortcomings in the background technology, the present invention discloses a construction method for strengthening and consolidating a soft roadbed. The present invention achieves the purpose of strengthening the soft roadbed and improving the stability and bearing capacity of the roadbed through S1, site testing, S2, pre-construction preparation, S3, drainage consolidation, S4, secondary reinforcement and S5, construction detection.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A construction method for strengthening and consolidating a soft roadbed comprises the following steps:

[0006] S1. Field test

[0007] Level the site, measure the ground height, drill several holes vertically from the top of the roadbed downwards, extract samples of the underlying soft soil layer, measure the actual thickness and extent of the soft soil layer, and measure the moisture content in the soft soil layer in specific areas;

[0008] S2. Pre-construction preparation

[0009] Based on the measurement results, the road surface soil layer is compacted, specific construction areas are divided, settlement observation devices are installed in each area, holes are drilled evenly in each construction area according to the design requirements, and drainage ditches are set up on both sides of the roadbed;

[0010] S3, drainage consolidation

[0011] A soft roadbed consolidation device is placed in each hole to drain the soft soil layer under the roadbed, thereby reducing the water content of the soft soil layer under the roadbed and accelerating the consolidation of the soft soil layer under the roadbed. The drained water is then discharged through the drainage ditches on both sides of the roadbed.

[0012] S4. Secondary reinforcement

[0013] After the soft soil layer under the roadbed is consolidated, the soft roadbed consolidation devices in each hole are taken out and the holes in the ground are filled with high-strength clay soil or water-permeable materials such as sand, gravel, pebbles, and stone slabs for reinforcement, and the topsoil layer is compacted;

[0014] S5. Construction inspection

[0015] Detect the surface rebound amount and conduct acceptance based on the actual test data. If it meets the standards, it will pass the acceptance. If it does not meet the standards, return to S1 for secondary reinforcement.

[0016] To achieve the above-mentioned purpose, the second aspect of the present invention provides a soft roadbed consolidation device, which includes a fixing device, a water collecting device, a drainage device and a limiting device. A water collecting device is provided above the fixing device, the lower end of the water collecting device is connected to the fixing device, the water collecting device rotates above the fixing device, the upper end of the water collecting device is provided with a limiting transposition, and a drainage device is provided inside the water collecting device.

[0017] The fixing device is composed of a first vertebral body, a first bearing and a base plate. The first vertebral body is a cylindrical structure. The upper bottom surface of the first vertebral body is provided with a first bearing. The lower bottom surface of the outer ring of the first bearing is connected to the bottom surface of the first vertebral body. The inner surface of the inner ring of the first bearing is provided with a base plate. The base plate is a cylindrical structure. The lower end of the side surface of the base plate is connected to the inner surface of the inner ring of the first bearing. The first vertebral body, the first bearing and the base plate have the same central axis.

[0018] The water collecting device is composed of a water collecting pipe, a limiting plate, an extrusion device and an inflation device. The water collecting pipe is a hollow cylindrical structure. The inner wall of the lower end of the water collecting pipe is connected to the upper end of the side of the bottom plate. The water collecting pipe and the bottom plate have the same central axis. The first water inlet troughs are evenly distributed on the side of the water collecting pipe. The first water inlet troughs penetrate the side and inner wall of the water collecting pipe. The first water inlet troughs are axially arranged on the side of the water collecting pipe. A limiting plate is provided on each first water inlet trough. The side of the water collecting pipe is provided with an extrusion device, and an inflation device is provided above the water collecting pipe.

[0019] The limiting plate is a rectangular structure, the limiting plate is axially arranged on the side of the water collecting pipe, the side of the limiting plate is connected to the side of the water collecting pipe, a second water inlet groove is provided on the limiting plate, the second water inlet groove is axially arranged on the limiting plate, the second water inlet groove passes through the side where the limiting plate is connected to the water collecting pipe and the other side opposite to it, the second water inlet groove is connected to the first water inlet groove, a filter is provided in the second water inlet groove, the side of the filter is connected to the inner wall of the second water inlet groove, and an extrusion device is provided between each limiting plate.

[0020] The extrusion device consists of an airbag, an extrusion plate and a baffle. The airbag is axially arranged between two adjacent limit plates. One side of the airbag is connected to the side of the water collecting pipe. The other side of the airbag is provided with an extrusion plate. The extrusion plate is an arc-shaped structure. The extrusion plate is arranged parallel to the water collecting pipe. The inner concave surface of the extrusion plate is connected to the side of the airbag. Two card slots are symmetrically provided on both sides of the extrusion plate. The card slots are axially arranged on the side of the extrusion plate. A baffle is provided between adjacent extrusion plates.

[0021] The baffle is an arc-shaped structure, and is arranged parallel to the extrusion plate. One side of the baffle is arranged in the slot on one side of the extrusion plate, and the other side of the baffle is arranged in the slot corresponding to the adjacent extrusion plate.

[0022] The inflation device is composed of a fixed plate, a guide ring, a diverter pipe and an air intake pipe. The fixed plate is a cylindrical structure. The lower surface of the fixed plate is connected to the upper surface of the water collecting pipe. The lower surface of the fixed plate is provided with a guide ring. The guide ring is a hollow circular ring structure. The guide ring is arranged in the water collecting pipe. The upper surface of the guide ring is connected to the lower surface of the fixed plate. A diverter pipe is distributed on the lower surface of the guide ring. The diverter pipe is arranged corresponding to the airbag below. The upper end of the diverter pipe passes through the lower surface of the guide ring to communicate with the guide ring, and the lower end of the diverter pipe passes through the upper surface of the airbag to communicate with the airbag. An air intake pipe is provided above the fixed plate. The lower end of the air intake pipe passes through the fixed plate and is connected to the upper surface of the guide ring and the guide ring.

[0023] The drainage device consists of a suction pipe, a turntable, a fixed rod and a support rod. The suction pipe is a hollow cylindrical structure. The lower end of the suction pipe is arranged in the water collecting pipe. The suction pipe and the water collecting pipe have the same central axis. A turntable is provided on the side of the suction pipe. The turntable is set from above the water collecting pipe. Fixed rods are evenly distributed between the suction pipe and the water collecting pipe. One end of the fixed rod is connected to the side of the suction pipe, and the other end of the fixed rod is connected to the inner wall of the water collecting pipe. Support rods are distributed on the lower surface of the suction pipe. The upper end of the support rod is connected to the lower surface of the suction pipe, and the lower end of the support rod is connected to the upper surface of the bottom plate.

[0024] The limiting device is composed of a connecting ring, a connecting rod, a second bearing, a positioning shaft and a second vertebra. The connecting ring is a circular ring structure and is arranged between the water collecting pipe and the turntable. A second bearing is provided in the connecting ring. The second bearing is sleeved on the water pumping pipe. The inner surface of the inner ring of the second bearing is connected to the side surface of the water pumping pipe. Connecting rods are evenly distributed between the connecting ring and the second bearing. One end of the connecting rod is connected to the inner wall of the connecting ring, and the other end of the connecting rod is connected to the outer surface of the outer ring of the second bearing. The lower surface of the connecting ring is distributed with a positioning shaft. The upper surface of the positioning shaft is connected to the lower surface of the connecting ring, and the lower surface of the positioning shaft is provided with a second vertebra.

[0025] The construction method for strengthening and consolidating a soft roadbed described in the present invention achieves the purpose of strengthening the soft roadbed and improving the stability and bearing capacity of the roadbed through S1, site testing, S2, pre-construction preparation, S3, drainage consolidation, S4, secondary reinforcement and S5, construction testing. The present invention is highly practical and very convenient to use. It can not only drain the moisture contained in the soft soil layer below the roadbed and improve the stability and bearing capacity of the high roadbed, but also can quickly consolidate the soft soil layer below the roadbed, which not only saves the time required for construction, but also reduces the economic cost of large-scale equipment entering the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 is a cross-sectional view of the fixing device of the present invention;

[0028] Figure 3 This is a schematic diagram of the connection between the water collecting pipe and the limiting plate of the present invention;

[0029] Figure 4 This is a schematic diagram of the connection between the extrusion plate, airbag and baffle of the present invention;

[0030] Figure 5 This is a schematic diagram of the connection between the fixing plate and the guide ring of the present invention;

[0031] Figure 6 It is a schematic diagram of the three-dimensional structure of the drainage device of the present invention;

[0032] Figure 7 It is a schematic diagram of the three-dimensional structure of the limiting device of the present invention;

[0033] Figure 8 It is a simplified flow chart of the construction method of the present invention;

[0034] In the figure: 1. fixing device; 101. first vertebra; 102. first bearing; 103. bottom plate; 2. water collecting device; 201. water collecting pipe; 202. limiting plate; 203. first water inlet trough; 204. second water inlet trough; 205. filter screen; 206. air bag; 207. extrusion plate; 208. slot; 209. baffle; 210. fixing plate; 211. guide ring; 212. diverter pipe; 213. air inlet pipe; 3. drainage device; 301. water pumping pipe; 302. turntable; 303. fixing rod; 304. support rod; 4. limiting device; 401. connecting ring; 402. connecting rod; 403. second bearing; 404. positioning shaft; 405. second vertebra. DETAILED DESCRIPTION

[0035] The present invention is explained in detail by the following examples, the purpose of which is to protect all technical improvements within the scope of the present invention.

[0036] Combined with attachment Figures 1 to 8 A construction method for strengthening and consolidating a soft roadbed comprises the following steps:

[0037] S1. Field test

[0038] Level the site, measure the ground height, drill several holes vertically from the top of the roadbed downwards, extract samples of the underlying soft soil layer, measure the actual thickness and extent of the soft soil layer, and measure the moisture content in the soft soil layer in specific areas;

[0039] S2. Pre-construction preparation

[0040] Based on the measurement results, the road surface soil layer is compacted, specific construction areas are divided, settlement observation devices are installed in each area, holes are drilled evenly in each construction area according to the design requirements, and drainage ditches are set up on both sides of the roadbed;

[0041] S3, drainage consolidation

[0042] A soft roadbed consolidation device is placed in each hole to drain the soft soil layer under the roadbed, thereby reducing the water content of the soft soil layer under the roadbed and accelerating the consolidation of the soft soil layer under the roadbed. The drained water is then discharged through the drainage ditches on both sides of the roadbed.

[0043] S4. Secondary reinforcement

[0044] After the soft soil layer under the roadbed is consolidated, the soft roadbed consolidation devices in each hole are taken out and the holes in the ground are filled with high-strength clay soil or water-permeable materials such as sand, gravel, pebbles, and stone slabs for reinforcement, and the topsoil layer is compacted;

[0045] S5. Construction inspection

[0046] Detect the surface rebound amount and conduct acceptance based on the actual test data. If it meets the standards, it will pass the acceptance. If it does not meet the standards, return to S1 for secondary reinforcement.

[0047] To achieve the above-mentioned purpose, the second aspect of the present invention provides a soft roadbed consolidation device, which includes a fixing device 1, a water collecting device 2, a drainage device 3 and a limiting device 4. A water collecting device 2 is provided above the fixing device 1, and the lower end of the water collecting device 2 is connected to the fixing device 1. The water collecting device 2 rotates above the fixing device 1, and a limiting transposition 4 is provided at the upper end of the water collecting device 2. A drainage device 3 is provided inside the water collecting device 2.

[0048] The fixing device 1 is composed of a first vertebral body 101, a first bearing 102 and a base plate 103. The first vertebral body 101 is a cylindrical structure. The upper bottom surface of the first vertebral body 101 is provided with a first bearing 102. The lower bottom surface of the outer ring of the first bearing 102 is connected to the bottom surface of the first vertebral body 101. The inner surface of the inner ring of the first bearing 102 is provided with a base plate 103. The base plate 103 is a cylindrical structure. The lower end of the side surface of the base plate 103 is connected to the inner surface of the inner ring of the first bearing 102. The first vertebral body 101, the first bearing 102 and the base plate 103 have the same central axis. The first vertebral body 101 is inserted into the ground below to prevent the water collection device 2 from shaking when it rotates.

[0049] The water collecting device 2 is composed of a water collecting pipe 201, a limiting plate 202, an extrusion device and an inflation device. The water collecting pipe 201 is a hollow cylindrical structure. The inner wall of the lower end of the water collecting pipe 201 is connected to the upper end of the side of the bottom plate 103. The water collecting pipe 201 and the bottom plate 103 have the same central axis. The side of the water collecting pipe 201 is evenly distributed with first water inlet grooves 203. The first water inlet grooves 203 penetrate the side and inner wall of the water collecting pipe 201. The first water inlet grooves 203 are axially arranged on the side of the water collecting pipe 201. Each first water inlet groove 203 is provided with a limiting plate 202. The side of the water collecting pipe 201 is provided with an extrusion device, and the top of the water collecting pipe 201 is provided with an inflation device.

[0050] The limiting plate 202 is a rectangular structure. The limiting plate 202 is axially arranged on the side of the water collecting pipe 201. The side of the limiting plate 202 is connected to the side of the water collecting pipe 201. A second water inlet trough 204 is provided on the limiting plate 202. The second water inlet trough 204 is axially arranged on the limiting plate 202. The second water inlet trough 204 passes through the side where the limiting plate 202 is connected to the water collecting pipe 201 and the other side opposite to it. The second water inlet trough 204 is connected to the first water inlet trough 203. The moisture in the soft soil layer enters the water collecting pipe 201 through the first water inlet trough 203 and the second water inlet trough 204, which is convenient for moisture collection. A filter screen 205 is provided in the second water inlet trough 204. The side of the filter screen 205 is connected to the inner wall of the second water inlet trough 204. The filter screen 205 filters soil particles to avoid blockage of the first water inlet trough 203 and the second water inlet trough 204. An extrusion device is provided between each limiting plate 202.

[0051] The extrusion device is composed of an airbag 206, an extrusion plate 207 and a baffle 209. The airbag 206 is axially arranged between two adjacent limit plates 202. One side of the airbag 206 is connected to the side of the water collecting pipe 201. The other side of the airbag 206 is provided with an extrusion plate 207. The extrusion plate 207 is an arc-shaped structure. The extrusion plate 207 is arranged parallel to the water collecting pipe 201. The inner concave surface of the extrusion plate 207 is connected to the side of the airbag 206. The extrusion plate 207 squeezes the moisture on the inner wall of the soft soil layer to accelerate the consolidation of the soft soil layer. Two card slots 208 are symmetrically provided on both sides of the extrusion plate 207. The card slots 208 are axially arranged on the side of the extrusion plate 207. A baffle 209 is provided between adjacent extrusion plates 207.

[0052] The baffle 209 is an arc-shaped structure. The baffle 209 is arranged parallel to the extrusion plate 207. One side of the baffle 209 is arranged in the slot 208 on one side of the extrusion plate 207, and the other side of the baffle 209 is arranged in the slot 208 corresponding to the adjacent extrusion plate 207. When the water collection device 2 enters the preset hole in the ground, the baffle 209 prevents the mud on the hole wall from getting stuck between the two adjacent extrusion plates 207, causing the first water inlet trough 203 and the second water inlet trough 204 to be blocked.

[0053] The inflation device is composed of a fixed plate 210, a guide ring 211, a diverter pipe 212 and an air inlet pipe 213. The fixed plate 210 is a cylindrical structure. The lower surface of the fixed plate 210 is connected to the upper surface of the water collecting pipe 201. The lower surface of the fixed plate 210 is provided with a guide ring 211. The guide ring 211 is a hollow annular structure. The guide ring 211 is arranged in the water collecting pipe 201. The upper surface of the guide ring 211 is connected to the lower surface of the fixed plate 210. A diverter pipe 212 is distributed on the lower surface of the ring 211, and the diverter pipe 212 is arranged corresponding to the airbag 206 below. The upper end of the diverter pipe 212 passes through the lower surface of the guide ring 211 and is connected to the guide ring 211, and the lower end of the diverter pipe 212 passes through the upper surface of the airbag 206 and is connected to the airbag 206. An air intake pipe 213 is provided above the fixed plate 210, and the lower end of the air intake pipe 213 passes through the fixed plate 210 and is connected to the upper surface of the guide ring 211 and the guide ring 211.

[0054] The drainage device 3 is composed of a water pumping pipe 301, a turntable 302, a fixing rod 303 and a support rod 304. The water pumping pipe 301 is a hollow cylindrical structure. The lower end of the water pumping pipe 301 is arranged in the water collecting pipe 201. The water pumping pipe 301 and the water collecting pipe 201 have the same central axis. A turntable 302 is provided on the side of the water pumping pipe 301. The turntable 302 is set above the water collecting pipe 201. The fixing rods 303 are evenly distributed between the water pumping pipe 301 and the water collecting pipe 201. One end of 03 is connected to the side of the water pumping pipe 301, and the other end of the fixed rod 303 is connected to the inner wall of the water collecting pipe 201. The lower surface of the water pumping pipe 301 is distributed with a support rod 304. The upper end of the support rod 304 is connected to the lower surface of the water pumping pipe 301, and the lower end of the support rod 304 is connected to the upper surface of the bottom plate 103. The water in the water collecting pipe 201 enters the water pumping pipe 301 through the gaps between the support rods 304, which makes it convenient to discharge the water from the water collecting pipe 201.

[0055] The limiting device is composed of a connecting ring 401, a connecting rod 402, a second bearing 403, a positioning shaft 404 and a second vertebral body 405. The connecting ring 401 is a circular ring structure. The connecting ring 401 is arranged between the water collecting pipe 201 and the turntable 302. A second bearing 403 is arranged in the connecting ring 401. The second bearing 403 is sleeved on the water pumping pipe 301. The inner surface of the inner ring of the second bearing 403 is connected to the side of the water pumping pipe 301. Connecting rods 402 are evenly distributed between the connecting ring 401 and the second bearing 403. One end of the connecting rod 402 is connected to the inner wall of the connecting ring 401, and the other end of the connecting rod 402 is connected to the outer surface of the outer ring of the second bearing 403. A positioning shaft 404 is distributed on the lower surface of the connecting ring 401. The upper surface of the positioning shaft 404 is connected to the lower surface of the connecting ring 401. The lower surface of the positioning shaft 404 is provided with a second vertebra 405. The positioning shaft 404 and the second vertebra 405 are inserted into the soil around the hole to provide a fixed point for the water collection device 2 when it rotates, and at the same time prevent the water collection device 2 from shaking in the hole and causing uneven rotation.

[0056] A construction method for strengthening and consolidating a soft roadbed as described in the embodiment first conducts a site test, the construction workers level the site, measure the ground height, drill several holes vertically from the top of the roadbed downwards, extract samples of the lower soft soil layer, measure the actual thickness and range of the soft soil layer, and measure the moisture content of the soft soil layer in a specific area. Then, pre-construction preparations are carried out. According to the measurement results, the road surface soil layer is compacted, specific construction areas are divided, and settlement observation devices are set up in each area. According to the design requirements, holes are drilled evenly on the ground in each construction area, and drainage ditches are set up on both sides of the roadbed. Then, drainage consolidation is carried out, and a soft roadbed consolidation device is placed in each hole. The fixing device 1 is inserted downward Into the hole, and make the water collecting device 2 stick to the inner wall of the hole, install it downward until the first vertebra 101 is inserted into the soil below the hole, and make the positioning shaft 404 of the limiting device 4 and the second vertebra 405 inserted into the soil around the hole mouth, and pull out each baffle 209 from between the extrusion plates 207 from above to expose the second water inlet trough 204, so that the water on the inner wall of the hole can flow into the water collecting pipe 201 through the second water inlet trough 204 and the first water inlet trough 203, and the filter screen 205 can filter the soil particles to avoid the first water inlet trough 203 and the second water inlet trough 204 from being blocked, and then inflate the guide ring 211 through the air inlet pipe 213. The air enters the corresponding airbag 206 through each shunt pipe 212 on the guide ring 211, causing the airbag 206 to expand and push the squeezing plate 207 outward. The squeezing plate 207 squeezes the inner wall of the hole to squeeze out the water contained in the soft soil. The turntable 302 is rotated to rotate each squeezing plate 207 to better squeeze the inner wall of the hole. After squeezing for a period of time, the air is continued to be inflated so that the squeezing plate 207 exerts greater pressure on the inner wall of the hole, and each squeezing plate 207 is rotated to drain as much water as possible from the hole. After the water enters the water collecting pipe 201, a water pump is connected to the pumping pipe 301 to pump the water in the water collecting pipe 201 out and discharge it through the drain trough. The drainage is completed. After completion, the water collection device 2 is pulled out from the inner wall of the hole, and the soft soil layer under the roadbed is drained through the soft roadbed consolidation device to reduce the water content of the soft soil layer under the roadbed and accelerate the consolidation of the soft soil layer under the roadbed. The drained water is then discharged through the drainage ditches on both sides of the roadbed, and then secondary reinforcement is carried out. After the soft soil layer under the roadbed is consolidated, the soft roadbed consolidation devices in each hole are taken out, and the holes in the ground are filled with high-strength clay or sand, gravel, pebbles, stone and other water-permeable materials for reinforcement, and the topsoil layer is compacted; finally, construction inspection is carried out to detect the surface rebound amount, and acceptance is carried out according to the actual inspection data. If it meets the standards, it is accepted. If it does not meet the standards, return to S1 for secondary reinforcement.

[0057] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred embodiments, there are many methods and approaches to implement the technical solution. The above is only a preferred embodiment of the present invention. However, those skilled in the art should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, and all of these are within the scope of protection of the present invention.

Claims

1. A construction method for strengthening and consolidating a soft roadbed, characterized by: The following steps are involved: S1. Field test Level the site, measure the ground height, drill several holes vertically from the top of the roadbed downwards, extract samples of the underlying soft soil layer, measure the actual thickness and extent of the soft soil layer, and measure the moisture content in the soft soil layer in specific areas; S2. Pre-construction preparation Based on the measurement results, the road surface soil layer is compacted, specific construction areas are divided, settlement observation devices are installed in each area, holes are drilled evenly in each construction area according to the design requirements, and drainage ditches are set up on both sides of the roadbed; S3, drainage consolidation A soft roadbed consolidation device is placed in each hole to drain the soft soil layer under the roadbed, thereby reducing the water content of the soft soil layer under the roadbed and accelerating the consolidation of the soft soil layer under the roadbed. The drained water is then discharged through the drainage ditches on both sides of the roadbed. S4. Secondary reinforcement After the soft soil layer under the roadbed is consolidated, the soft roadbed consolidation devices in each hole are taken out and the holes in the ground are filled with high-strength clay soil or sand, gravel, pebbles, stone and water-permeable materials for reinforcement, and the topsoil layer is compacted; S5. Construction inspection Detect the surface rebound amount and conduct acceptance based on the actual test data. If it meets the standards, it will pass the acceptance. If it does not meet the standards, return to S1 for secondary reinforcement; The soft roadbed consolidation device described in S3 includes a fixing device (1), a water collecting device (2), a drainage device (3) and a limiting device (4), wherein the water collecting device (2) is provided above the fixing device (1), the lower end of the water collecting device (2) is connected to the fixing device (1), the water collecting device (2) rotates above the fixing device (1), the upper end of the water collecting device (2) is provided with a limiting device (4), and the drainage device (3) is provided inside the water collecting device (2); The fixing device (1) is composed of a first vertebra (101), a first bearing (102) and a bottom plate (103), the first vertebra (101) is a cylindrical structure, the upper bottom surface of the first vertebra (101) is provided with a first bearing (102), the lower bottom surface of the outer ring of the first bearing (102) is connected to the bottom surface of the first vertebra (101), the inner surface of the inner ring of the first bearing (102) is provided with a bottom plate (103), the bottom plate (103) is a cylindrical structure, the lower end of the side surface of the bottom plate (103) is connected to the inner surface of the inner ring of the first bearing (102), and the first vertebra (101), the first bearing (102) and the bottom plate (103) are on the same central axis; The water collecting device (2) is composed of a water collecting pipe (201), a limiting plate (202), an extrusion device and an inflation device. The water collecting pipe (201) is a hollow cylindrical structure. The inner wall of the lower end of the water collecting pipe (201) is connected to the upper end of the side of the bottom plate (103). The water collecting pipe (201) and the bottom plate (103) are on the same central axis. First water inlet grooves (203) are evenly distributed on the side of the water collecting pipe (201). The first water inlet grooves (203) penetrate the side and inner wall of the water collecting pipe (201). The first water inlet grooves (203) are axially arranged on the side of the water collecting pipe (201). Each first water inlet groove (203) is provided with a limiting plate (202). The side of the water collecting pipe (201) is provided with an extrusion device, and the top of the water collecting pipe (201) is provided with an inflation device. The limiting plate (202) is a rectangular structure. The limiting plate (202) is axially arranged on the side of the water collecting pipe (201). The side of the limiting plate (202) is connected to the side of the water collecting pipe (201). A second water inlet groove (204) is provided on the limiting plate (202). The second water inlet groove (204) is axially arranged on the limiting plate (202). The second water inlet groove (204) passes through the side of the limiting plate (202) connected to the water collecting pipe (201) and the other side opposite thereto. The second water inlet groove (204) is connected to the first water inlet groove (203). A filter screen (205) is provided in the second water inlet groove (204). The side of the filter screen (205) is connected to the inner wall of the second water inlet groove (204). An extrusion device is provided between each limiting plate (202); The extrusion device is composed of an airbag (206), an extrusion plate (207) and a baffle (209). The airbag (206) is axially arranged between two adjacent limit plates (202). One side of the airbag (206) is connected to the side of the water collecting pipe (201). The other side of the airbag (206) is provided with an extrusion plate (207). The extrusion plate (207) is an arc-shaped structure. The extrusion plate (207) is arranged parallel to the water collecting pipe (201). The inner concave surface of the extrusion plate (207) is connected to the side of the airbag (206). Two slots (208) are symmetrically provided on both sides of the extrusion plate (207). The slots (208) are axially arranged on the side of the extrusion plate (207). A baffle (209) is provided between adjacent extrusion plates (207).

2. The construction method for strengthening and consolidating a soft roadbed according to claim 1, characterized in that: The baffle (209) is an arc-shaped structure. The baffle (209) is arranged parallel to the extrusion plate (207). One side of the baffle (209) is arranged in a slot (208) on one side of the extrusion plate (207), and the other side of the baffle (209) is arranged in a slot (208) corresponding to an adjacent extrusion plate (207).

3. The construction method for strengthening and consolidating a soft roadbed according to claim 1, characterized in that: The inflation device is composed of a fixed plate (210), a guide ring (211), a diverter pipe (212), and an air inlet pipe (213). The fixed plate (210) is a cylindrical structure. The lower surface of the fixed plate (210) is connected to the upper surface of the water collecting pipe (201). The lower surface of the fixed plate (210) is provided with a guide ring (211). The guide ring (211) is a hollow annular structure. The guide ring (211) is arranged in the water collecting pipe (201). The upper surface of the guide ring (211) is connected to the lower surface of the fixed plate (210). A shunt pipe (212) is distributed on the lower surface of the fixed plate (210), and the shunt pipe (212) is arranged corresponding to the air bag (206) below. The upper end of the shunt pipe (212) passes through the lower surface of the guide ring (211) and is in communication with the guide ring (211). The lower end of the shunt pipe (212) passes through the upper surface of the air bag (206) and is in communication with the air bag (206). An air inlet pipe (213) is provided above the fixed plate (210), and the lower end of the air inlet pipe (213) passes through the fixed plate (210) and is in communication with the upper surface of the guide ring (211) and the guide ring (211).

4. The construction method for strengthening and consolidating a soft roadbed according to claim 1, wherein: The drainage device (3) is composed of a water pumping pipe (301), a rotating disk (302), a fixing rod (303) and a supporting rod (304). The water pumping pipe (301) is a hollow cylindrical structure. The lower end of the water pumping pipe (301) is arranged in the water collecting pipe (201). The water pumping pipe (301) and the water collecting pipe (201) have the same central axis. A rotating disk (302) is provided on the side of the water pumping pipe (301). The rotating disk (302) is arranged above the water collecting pipe (201). The water pumping pipe (301) is provided with a rotating disk (302). ) and the water collecting pipe (201), fixed rods (303) are evenly distributed, one end of the fixed rod (303) is connected to the side of the water pumping pipe (301), and the other end of the fixed rod (303) is connected to the inner wall of the water collecting pipe (201), and a support rod (304) is distributed on the lower surface of the water pumping pipe (301), the upper end of the support rod (304) is connected to the lower surface of the water pumping pipe (301), and the lower end of the support rod (304) is connected to the upper surface of the bottom plate (103).

5. The construction method for strengthening and consolidating a soft roadbed according to claim 1, characterized in that: The limiting device is composed of a connecting ring (401), a connecting rod (402), a second bearing (403), a positioning shaft (404) and a second cone (405). The connecting ring (401) is a circular ring structure. The connecting ring (401) is arranged between the water collecting pipe (201) and the rotating disk (302). The second bearing (403) is arranged in the connecting ring (401). The second bearing (403) is sleeved on the water pumping pipe (301). The inner surface of the inner ring of the second bearing (403) is aligned with the side surface of the water pumping pipe (301). The connecting ring (401) and the second bearing (403) are connected, and connecting rods (402) are evenly distributed between the connecting ring (401) and the second bearing (403). One end of the connecting rod (402) is connected to the inner wall of the connecting ring (401), and the other end of the connecting rod (402) is connected to the outer surface of the outer ring of the second bearing (403). A positioning shaft (404) is distributed on the lower surface of the connecting ring (401), and the upper surface of the positioning shaft (404) is connected to the lower surface of the connecting ring (401). The lower surface of the positioning shaft (404) is provided with a second vertebra (405).

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