Integral tamping reinforcement construction method for poor foundation of industrial factory building terrace

Abstract

The invention discloses an integral tamping reinforcement construction method for a poor foundation of an industrial factory building terrace. The integral tamping reinforcement construction method comprises the operation procedures of surface cleaning, earthwork backfilling, earthwork compaction, geotextile laying at intervals in a crossed mode through a weaving method, geotextile fixing, earthwork backfilling and geotextile laying circularly and repeatedly till filling soil reaches the designed elevation. The geotechnical cloth is woven and laid at intervals to form a grid shape, so that the integrality is better, and labor and materials are saved; geotextile is laid, so that unfavorable soil texture is greatly improved, and time and cost for replacing good soil or watering, tedding and the like of the soil body are reduced; the grid-shaped geotechnical cloth is laid to improve the integrity of the soil body, the virtual laying thickness of each layer can be properly increased, the layering frequency is reduced, the construction efficiency is improved, and uneven settlement of the soil body caused by construction or environmental factors is reduced; the large-area overall filling earthwork increases the construction efficiency and shortens the construction period.

Description

Technical Field

[0001] The present invention belongs to the field of construction engineering, and specifically relates to a backfill construction method of a woven geotextile reinforced backfill soil used in a floor fill foundation. The method has the advantages of convenient construction and effective improvement of the quality of floor backfill soil, and is suitable for promotion in construction sites, which is beneficial to increasing construction efficiency, reducing costs, reducing floor settlement cracks, and reducing rework and repair. Background Art

[0002] At present, concrete floors are mostly used in construction projects, especially large industrial plants, because production and transportation needs generally require high foundation compaction and bearing capacity. The existing floor fill foundation construction method mainly uses soil with good soil quality, backfilling and rolling in layers. This method is relatively demanding in terms of raw material selection, construction machinery selection, construction process control, and construction environment control, and the actual construction process effect is not ideal.

[0003] The existing construction technology has the following shortcomings:

[0004] 1. The selection of raw materials must ensure that the soil is of good quality and within the optimal moisture content range. The soil in the actual construction site may not meet the requirements. It is time-consuming and laborious to replace good soil, turn over or sprinkle water to improve the soil quality;

[0005] 2. The construction machinery must be large-scale. If the structural foundation and equipment foundation are large or dense, the design compaction standard cannot be met by using small-scale machinery or manual compaction;

[0006] 3. The construction process must be strictly controlled. The thickness of the layered soil is generally about 300mm. When backfilling, earthmoving vehicles and excavators are used. The accuracy cannot be controlled and the deep backfill soil is extremely time-consuming and machine-shift-intensive. As a result, this link is the most severely affected area of ​​quality control in existing construction methods, and it is difficult to proceed step by step.

[0007] 4. Backfilling operations are mostly carried out in the open air. However, my country has a vast territory and the weather varies from place to place. If the construction process encounters rainy seasons or high temperatures, the backfill soil may be too wet or too dry, and the ideal backfilling state cannot be achieved.

[0008] These problems may occur simultaneously during the implementation process, resulting in the failure of the floor fill foundation to achieve the expected effect, and ultimately causing the floor to sink and crack, seriously affecting its functionality and appearance. Summary of the invention

[0009] The purpose of the present invention is to provide an integral filling and reinforcement construction method for poor foundation of industrial plant floor, so as to achieve the floor filling foundation backfill construction method which increases construction efficiency, reduces foundation settlement, reduces rework and repair, and saves costs.

[0010] The present invention adopts the following technical solutions:

[0011] An integral filling and reinforcement construction method for poor foundation of industrial plant floor, comprising:

[0012] The first step is to clear the bottom layer:

[0013] First, clean the base to ensure there are no weeds, garbage, or stagnant water, then level it and determine the approximate range of the fill;

[0014] Step 2: Backfilling:

[0015] First, conduct a test section to determine the virtual thickness of the backfill soil, and finally fill and level a large area according to the determined virtual thickness, with the fill exceeding the edge of the proposed construction floor by 500mm;

[0016] The third step is soil compaction:

[0017] Select appropriate compaction machinery to carry out overall compaction of earthwork according to actual conditions;

[0018] If the site is open, a vibratory roller is used for compaction;

[0019] If the space is limited and a roller cannot be used, a large tamping machine is used for compaction until there are no obvious wheel marks or tamping marks.

[0020] Step 4: Laying geotextile:

[0021] First, lay the geotextile at intervals along the length of the site, and then lay it crosswise and at intervals in the vertical direction using a weaving method. The mesh size is between 20-100cm. The laid geotextile should be straight and wrinkle-free, and ensure that the overlap length is not less than 100mm. When encountering a structural foundation or equipment foundation, turn over 500mm along the foundation.

[0022] Step 5: Fixing the geotextile:

[0023] After the geotextile is laid, it should be checked and arranged to ensure that all geotextiles are horizontal and vertical without turning over or knotting, and all joints and flanges are correct, and then fixed;

[0024] Step 6: Repeat steps 2 to 4 until the fill reaches the designed elevation.

[0025] According to the preferred solution, both ends of each geotextile are provided with winding plates, which are fixed on the side structural foundation, and the winding plates are equipped with a winding roller located at the upper part and a pressing roller located at the lower part, the pressing roller presses the geotextile on the compacted earth, and the winding roller is used to wind the geotextile.

[0026] In a preferred solution, a support plate is installed on the winding plate, a support ring is installed on the support plate, a sink groove is provided on one side of the support ring, a plurality of elastic ratchet pieces are evenly distributed in the circumferential direction of the sink groove, a roller is installed on the shaft of the winding roller, the roller is sleeved in the support ring, a ratchet ring corresponding to the position of the sink groove is installed on the roller, and the ratchet ring and the elastic ratchet piece are adapted to be installed to tighten the geotextile;

[0027] A rotating ring is installed in the sink groove, a radial rod is installed on the rotating ring, a slider is installed on the radial rod, the slider is slidably fitted on the outside of the support ring, an adjustment groove is provided on the outer circumference of the support ring, the radial rod is socketed in the adjustment groove and the slider is located on the outside of the support ring, an elastic part is installed on the support ring, and the free end of the elastic part is installed on the slider.

[0028] Preferably, a control frame is installed in the mesh of the geotextile layer, and the control frame is installed in the mesh by snap-on structures on all sides. A support column is installed at the bottom of the control frame located at the bottom, and the support column is inserted into the compacted backfill soil layer. Support rods are installed on the control frames other than the lowest part.

[0029] In a preferred embodiment, the support column and support rod are drilled and installed after the backfill soil is compacted. The support column and support rod both include an inner rod and an outer tube. The outer tube is gradually away from the inner rod. A horizontal slot is provided on the side of the outer tube. An anchor body is rotatably installed in the horizontal slot and a torsion spring is provided at the rotation node. An adjustment sleeve is provided on the outer side of the inner rod. The adjustment sleeve is rotatably arranged at the inner bottom of the outer tube. An outer boss is provided on the outer side of the adjustment sleeve for causing the anchor body to expand outward and anchor in the compacted backfill soil. The inner rod is axially slidably fitted inside the adjustment sleeve.

[0030] A ratchet ring groove is installed on the outer side of the inner rod, and an elastic locking pin adapted to the ratchet ring groove is arranged in the outer tube, which is used to prevent the inner rod from moving closer to the outer tube in one direction;

[0031] The bottom of the support rod is connected to the top of the lower control frame.

[0032] In a preferred embodiment, the control frame comprises an upper frame and a lower frame, the lower frame and the inner rod are snap-fitted, a frame edge extending upward is arranged in the middle of the lower frame, the frame edge is used to fit the edge of the geotextile, a concave opening is arranged near the edge of the lower frame, the width of the concave opening increases along the depth direction, a frame opening corresponding to the frame edge and snap-fitted is arranged at the bottom of the upper frame, two groups of symmetrically distributed snap-fit ​​pieces corresponding to the concave opening and arranged inside and outside, and an elastic pressing plate near the edge for first pressing the geotextile;

[0033] The clamping piece clamps the geotextile in the concave opening, and after the elastic pressing plate presses the geotextile, the clamping piece enters the concave opening and completes the clamping fit.

[0034] In a preferred solution, a plug-in slot is provided on the top of the upper frame body, and a plug connector adapted to the plug-in slot is provided on the bottom of the outer cylinder.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The present invention weaves and lays geotextiles at intervals in a grid shape, which has good integrity, saves labor and materials; laying geotextiles greatly improves unfavorable soil quality, reduces the time and cost spent on replacing good soil or watering and drying the soil; laying grid-shaped geotextiles improves the integrity of the soil, can appropriately increase the thickness of each layer, reduce the number of stratifications, increase construction efficiency, and reduce uneven settlement of the soil caused by construction or environmental factors; large-area overall filling and compaction of earthwork increases construction efficiency and shortens construction period.

[0037] 2. During construction, the present invention uses a rolling structure to tension and tighten the two ends of the geotextile, so that the geotextile can be laid flat and woven and paved, which is beneficial to ensure that the moisture in the soil layer is evenly infiltrated and drained, and there will be no local settlement problem caused by concentrated infiltration in one direction or area.

[0038] 3. The present invention uses support columns at the bottom layer to anchor in the bottom backfill soil layer, and can sink with the settlement of the soil layer. When sinking occurs, the outer tube will move upward relative to the inner rod to achieve a certain amount of autonomous expansion and contraction, thereby ensuring that the bottom geotextile will not appear.

[0039] 4. The present invention adopts support rods to connect two adjacent layers of geotextiles, which can improve the integrity of the two adjacent layers of geotextiles, and then separate each soil layer into layers without causing settlement problems when the bottom geotextile is damaged. The relative position between the inner rod and the outer tube of the support rod is automatically adjusted to solve the problem of lack of support at the bottom, and then effectively solve the problem of cracks in the top floor caused by bottom settlement. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a construction process diagram of the present invention.

[0041] Figure 2 This is a backfill structure diagram of an implementation manner of the present invention.

[0042] Figure 3 It is a top view of the sewing of the geotextile of the present invention.

[0043] Figure 4 This is a backfill structure diagram of another embodiment of the present invention.

[0044] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0045] Figure 6for Figure 4 Cross-section of the inner and outer cylinders and inner rods Figure 1 .

[0046] Figure 7 for Figure 6 Top view of the inner and outer cylinders.

[0047] Figure 8 for Figure 4 Schematic diagram of the structure of the elastic locking pin.

[0048] Fig. 9 for Figure 6 Horizontal section view of the location of the elastic locking pin.

[0049] Fig.10 for Figure 4 A partial enlarged view of point B in the middle.

[0050] Fig.11 for Fig.10 Side view of the center support plate and support ring.

[0051] Fig.12 for Fig.10 3D view of the rollers, rotating parts and support rings.

[0052] Fig.13 for Fig.11 Schematic diagram of the structure of the elastic ratchet element. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0054] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0055] like Figure 1 , Figure 2 As shown, a method for integral filling and reinforcement of poor foundation of industrial plant floor comprises:

[0056] The first step is to clear the bottom layer:

[0057] First, clean the base to ensure there are no weeds, garbage, or stagnant water, then level it and determine the approximate range of the fill;

[0058] Step 2: Backfilling:

[0059] First, conduct a test section to determine the virtual thickness of the backfill soil, and finally fill and level a large area according to the determined virtual thickness, with the fill exceeding the edge of the proposed construction floor by 500mm;

[0060] The third step is soil compaction:

[0061] Select appropriate compaction machinery to carry out overall compaction of earthwork according to actual conditions;

[0062] If the site is open, a vibratory roller is used for compaction;

[0063] If the space is limited and a roller cannot be used, a large tamping machine is used for compaction until there are no obvious wheel marks or tamping marks.

[0064] Step 4: Laying geotextile 10:

[0065] First, lay the geotextile 10 at intervals along the length of the site, and then lay it crosswise and at intervals in the vertical direction using a weaving method. The mesh size is between 20-100cm. The laid geotextile 10 should be straight and wrinkle-free, and ensure that the overlap length is not less than 100mm. When encountering a structural foundation or equipment foundation, turn over 500mm along the foundation;

[0066] Step 5: Fixing the geotextile 10:

[0067] After the geotextile 10 is laid, it is first checked and arranged to ensure that all geotextiles 10 are horizontal and vertical without turning over or knotting, and all joints and flanges are correct, and then fixed; double stitching is used in the cross-section area of ​​the geotextile 10, and the stitching area is at least 15mm away from the edge;

[0068] Step 6: Repeat steps 2 to 4 until the fill reaches the designed elevation.

[0069] This construction method can control the positions of the upper and lower meshes to be staggered on the horizontal plane, hinder the settlement of backfill soil, and use the meshes to facilitate the drainage of water in the backfill soil. Since the geotextile layer is in a grid shape, it has good integrity, saves labor and materials; laying geotextiles greatly improves unfavorable soil quality, reduces the time and cost of replacing good soil or watering and drying the soil; laying grid-shaped geotextiles improves the integrity of the soil, and can appropriately increase the thickness of each layer, reduce the number of layers, increase construction efficiency, and reduce uneven settlement of the soil caused by construction or environmental factors; large-area overall filling and compaction of earthwork increases construction efficiency and shortens construction period.

[0070] Due to the uneven paving of the geotextile during the specific implementation, the uneven geotextile is prone to overlapping parts during the backfill compaction operation, which leads to uneven seepage and drainage, and easily causes excessive seepage in one direction or a certain area, leading to local settlement problems.

[0071] Based on the above implementation, Figure 4 , Figures 10 to 13 As shown, both ends of each geotextile 10 are provided with a winding plate 11, which is fixed on the side structural foundation, and the winding plate 11 is installed with a winding roller 12 located at the upper part and a pressing roller 13 located at the lower part. The pressing roller 13 presses the geotextile 10 on the compacted soil, and the winding roller 12 is used to wind the geotextile 10.

[0072] The winding plate 11 is provided with a support plate 14, and a support ring 15 is provided on the support plate 14. A sink groove is provided on one side of the support ring 15, and a plurality of elastic ratchet pieces 16 are evenly distributed in the circumferential direction of the sink groove. A roller 17 is provided on the shaft of the winding roller 12, and the roller 17 is sleeved in the support ring 15. A ratchet ring 18 corresponding to the position of the sink groove is provided on the roller 17, and the ratchet ring 18 and the elastic ratchet piece 16 are adapted to be installed to tighten the geotextile 10;

[0073] A rotating ring 19 is installed in the sink groove, a radial rod 111 is installed on the rotating ring 19, a slider 110 is installed on the radial rod 111, the slider 110 is slidably fitted on the outer side of the support ring 15, an adjustment groove is provided on the outer peripheral surface of the support ring 15, the radial rod 111 is socketed in the adjustment groove and the slider 110 is located on the outer side of the support ring 15, an elastic member 112 is installed on the support ring 15, and the free end of the elastic member 112 is installed on the slider 110.

[0074] After each layer of backfill soil is backfilled, the two ends of each geotextile 10 are tensioned and pulled by the winding roller 12, and the compression roller 13 at the bottom can effectively lay the geotextile 10 evenly on the top surface of the compacted backfill soil. After smooth laying and a certain degree of local pulling, the backfill soil can be evenly infiltrated and the problem of uneven infiltration will not occur.

[0075] Due to the influence of groundwater, there is still a problem of sinking of the bottom backfill soil after actual use. In the prior art, capillary infiltration is used to reduce the influence of groundwater on the settlement of backfill soil. However, after a certain period of use, the deep water outlets of some capillaries are blocked, which in turn affects the infiltration problem, resulting in the inability to fundamentally solve the problem of backfill soil settlement.

[0076] In the above scheme, a control frame 20 is installed in the mesh of the geotextile layer 10, and the control frame 20 is installed in the mesh through the snap-on structure on all sides. A support column 21 is installed at the bottom of the control frame 20 located at the bottom, and the support column 21 is inserted into the compacted backfill soil layer. Support rods 22 are installed on the control frame 20 other than the lowest part.

[0077] The support column 21 and the support rod 22 are drilled and installed after the backfill soil is compacted. The support column 21 and the support rod 22 both include an inner rod 211 and an outer tube 212. The outer tube 212 gradually moves away from the inner rod 211. The side of the outer tube 212 is provided with a horizontal slot 213. An anchor body 214 is rotatably installed in the horizontal slot 213, and a torsion spring is provided at the rotation node. An adjusting sleeve 216 is provided on the outer side of the inner rod 211. The adjusting sleeve 216 is rotatably arranged at the inner bottom of the outer tube 212. An outer boss 215 is provided on the outer side of the adjusting sleeve 216 for causing the anchor body 214 to expand outward and anchor in the compacted backfill soil. The inner rod 211 is axially slidably installed inside the adjusting sleeve 216. The adjusting sleeve 216 is driven to rotate a certain angle by rotating the inner rod 211, so that the anchor body 214 rotates and flips outward, and then anchors in the backfill soil.

[0078] A ratchet ring groove 217 is installed on the outer side of the inner rod 211, and an elastic locking pin 218 adapted to the ratchet ring groove 217 is arranged in the outer tube 212 to prevent the inner rod 211 from moving closer to the outer tube 212 in one direction. The elastic locking pin 218 can limit the rotation of the inner rod 211 and prevent the inner rod 211 from moving closer to the outer tube 212. The structure of the ratchet ring groove 217 and the elastic locking pin 218 is shown in FIG. Figure 5 , Figures 7 to 9 shown.

[0079] The bottom of the support rod 22 is connected to the top of the control frame 20 at the lower layer.

[0080] The control frame 20 includes an upper frame 23 and a lower frame 24. The lower frame 24 and the inner rod 211 are snap-fitted. A frame edge 241 extending upward is provided in the middle of the lower frame 24. The frame edge 241 is used to fit the edge of the geotextile 10. A concave opening 242 is provided near the edge of the lower frame 24. The width of the concave opening 242 increases along the depth direction. The bottom of the upper frame 23 is provided with a frame opening 243 corresponding to the position of the frame edge 241 and snap-fitted, two groups of symmetrically distributed snap-fitting pieces 244 corresponding to the position of the concave opening 242 and arranged inside and outside, and an elastic pressing plate 245 near the edge for first pressing the geotextile 10. The snap-fitting piece 244 snap-fits the geotextile 10 in the concave opening 242. After the elastic pressing plate 245 presses the geotextile 10, the snap-fitting piece 244 enters the concave opening 242 and completes the snap-fitting. The clamping piece 244 enters the concave opening 242 and blocks the bottom of the concave opening 242, so that the clamping piece 244 expands outward and presses the geotextile 10 tightly and clamps it in the concave opening 242. Even when the lower layer of the geotextile 10 sinks locally and loses support, the necessary conditions for the geotextile 10 to bear the backfill soil can be guaranteed, preventing the geotextile 10 and the control frame 20 from detaching from the geotextile 10, causing problems such as uneven seepage and backfill soil loss.

[0081] The top of the upper frame 23 is provided with an inserting slot 231 , and the bottom of the outer cylinder 212 is provided with a plug connector 232 adapted to the inserting slot 231 .

[0082] After the bottom backfill soil is compacted, the total station is used to mark out the surface of the backfill soil, drilling begins at the set position, the support column 21 is buried, and the anchor body is expanded outward and anchored in the compacted backfill soil by rotating the inner rod 211. When the backfill soil sinks, the outer tube 212 will also move downward. As the outer tube 212 moves downward, the inner rod 211 moves upward relative to the outer tube 212, thereby lengthening the overall length, so that the top geotextile layer will not lose support, thereby ensuring that the upper geotextile layer is still in a supported state.

[0083] Before laying the geotextile 10, the lower frame 24 is connected to the top of the inner rod 211. After laying, the frame opening 243 and the frame edge 241 are buckled to form an integral connection to fix the woven geotextile, thereby enhancing the anti-sedimentation ability of the geotextile.

[0084] After the backfill soil is compacted, the support rods 22 are laid out, marked, drilled and installed to connect the upper and lower geotextile layers until the designed elevation is reached.

[0085] Even if the backfill soil at the bottom sinks partially, the automatic length compensation formed by the outer tube and the inner rod can support the geotextile and the soil layer above it, reducing the impact of settlement on the floor layer by layer.

[0086] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The replacement may be a replacement of a part of the structure, device, method step, or a complete technical solution. Any equivalent replacement or change according to the technical solution and the inventive concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. An integral filling and reinforcement construction method for poor foundation of industrial plant floor, characterized in that: include: The first step is to clear the bottom layer: First, clean the base to ensure there are no weeds, garbage, or stagnant water, then level it and determine the approximate range of the fill; Step 2: Backfilling: First, conduct a test section to determine the virtual thickness of the backfill soil, and finally fill and level a large area according to the determined virtual thickness, with the fill exceeding the edge of the proposed construction floor by 500mm; The third step is soil compaction: Select appropriate compaction machinery to carry out overall compaction of earthwork according to actual conditions; If the site is open, a vibratory roller is used for compaction; If the space is limited and a roller cannot be used, a large tamping machine is used for compaction until there are no obvious wheel marks or tamping marks. Step 4: Laying geotextile (10): First, the geotextile (10) is laid at intervals along the length of the site, and then laid at intervals in the vertical direction by weaving, with a mesh size of 20-100 cm. The laid geotextile (10) should be straight and wrinkle-free, and the overlap length should be no less than 100 mm. When encountering a structural foundation or equipment foundation, it should be folded 500 mm along the foundation. Step 5: Fixing the geotextile (10): After the geotextile (10) is laid, it is first inspected and arranged to ensure that all geotextiles (10) are horizontally and vertically flat without turning over or knotting, and all joints and flanges are correct, and then fixed; Step 6: Repeat steps 2 to 4 until the fill reaches the designed elevation.

2. The method for integral filling and reinforcement of poor foundation of industrial plant floor according to claim 1 is characterized in that: Both ends of each geotextile (10) are provided with a winding plate (11), which is fixed on a structural foundation at the side, and a winding roller (12) located at the top and a pressing roller (13) located at the bottom are installed on the winding plate (11), the pressing roller (13) presses the geotextile (10) against the compacted earth, and the winding roller (12) is used to wind the geotextile (10).

3. The method for integral filling and reinforcement of poor foundation of industrial plant floor according to claim 2 is characterized in that: The winding plate (11) is provided with a support plate (14), the support plate (14) is provided with a support ring (15), a groove is provided on one side of the support ring (15), a plurality of elastic ratchet pieces (16) are evenly distributed in the circumferential direction of the groove, a roller (17) is provided on the shaft of the winding roller (12), the roller (17) is sleeved in the support ring (15), a ratchet ring (18) corresponding to the position of the groove is provided on the roller (17), and the ratchet ring (18) and the elastic ratchet piece (16) are adapted to be installed to tighten the geotextile (10); A rotating ring (19) is installed in the sink groove, a radial rod (111) is installed on the rotating ring (19), a slider (110) is installed on the radial rod (111), the slider (110) is slidably fitted on the outer side of the support ring (15), an adjustment groove is arranged on the outer peripheral surface of the support ring (15), the radial rod (111) is inserted into the adjustment groove and the slider (110) is located on the outer side of the support ring (15), an elastic member (112) is installed on the support ring (15), and the free end of the elastic member (112) is installed on the slider (110).

4. The method for integral filling and reinforcement of poor foundation of industrial plant floor according to claim 1 is characterized in that: A control frame (20) is installed in the mesh of the geotextile (10) layer. The control frame (20) is installed in the mesh by means of snap-fit ​​structures on all sides. A support column (21) is installed at the bottom of the control frame (20) located at the bottom. The support column (21) is inserted into the compacted backfill soil layer. Support rods (22) are installed on the control frame (20) other than the lowest part.

5. The method for integral filling and reinforcement of poor foundation of industrial plant floor according to claim 4 is characterized in that: The support column (21) and the support rod (22) are drilled and installed after the backfill soil is compacted. The support column (21) and the support rod (22) both include an inner rod (211) and an outer tube (212). The outer tube (212) is gradually separated from the inner rod (211). A horizontal slot (213) is provided on the side of the outer tube (212). An anchor body (214) is rotatably installed in the horizontal slot (213) and a torsion spring is provided at the rotation node. An adjustment sleeve (216) is provided on the outer side of the inner rod (211). The adjustment sleeve (216) is rotatably installed at the inner bottom of the outer tube (212). An outer boss (215) is provided on the outer side of the adjustment sleeve (216) for causing the anchor body (214) to expand outward and anchor in the compacted backfill soil. The inner rod (211) is axially slidably installed inside the adjustment sleeve (216). A ratchet ring groove (217) is installed on the outer side of the inner rod (211), and an elastic locking pin (218) adapted to the ratchet ring groove (217) is arranged in the outer cylinder (212) for one-way stopping the inner rod (211) from moving closer to the outer cylinder (212); The bottom of the support rod (22) is connected to the top of the control frame (20) at the lower layer.

6. The method for integral filling and reinforcement of poor foundation of industrial plant floor according to claim 5 is characterized in that: The control frame (20) comprises an upper frame (23) and a lower frame (24); the lower frame (24) and the inner rod (211) are snap-fitted together; a frame edge (241) extending upward is provided in the middle of the lower frame (24); the frame edge (241) is used to fit the edge of the geotextile (10); a concave opening (242) is provided near the edge of the lower frame (24); the width of the concave opening (242) increases along the depth direction; the bottom of the upper frame (23) is provided with a frame edge (241) extending upward; 1) a frame opening (243) corresponding in position and snap-fitted, two groups of snap-fitting pieces (244) corresponding in position to the concave opening (242) and arranged inside and outside and symmetrically distributed, and an elastic pressing plate (245) near the edge for first pressing the geotextile (10), the snap-fitting piece (244) snap-fitting the geotextile (10) into the concave opening (242), and after the elastic pressing plate (245) presses the geotextile (10), the snap-fitting piece (244) enters the concave opening (242) and completes the snap-fitting.

7. The method for integral filling and reinforcement of poor foundation of industrial plant floor according to claim 6 is characterized in that: The top of the upper frame (23) is provided with an insertion slot (231), and the bottom of the outer cylinder (212) is provided with a plug connector (232) adapted to the insertion slot (231).

Images