Deviation rectifying and reinforcing structure for shallow foundation building
The reinforcement structure for shallow foundation buildings addresses the challenges of fixing steel pipe columns and preventing leakage by using a fixing and waterproof mechanism, ensuring stable fixation and sealing, thus enhancing the structural integrity and preventing water ingress.
Patent Information
- Application Number
- CN202411424248.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2024-12-27
AI Technical Summary
Existing shallow foundation building correction methods face issues with fixing steel pipe columns and preventing foundation leakage, particularly due to gaps formed during construction that allow groundwater to leak upward.
A reinforcement structure featuring a fixing mechanism with a fixing ring and rod, a waterproof mechanism with rubber sleeves and airbags, and a grouting mechanism to secure steel pipe piles in the soil layer, ensuring stable fixation and sealing against water leakage.
The structure effectively fixes steel pipe piles in the soil layer, prevents upward rebound, facilitates turnover of construction equipment, and enhances the sealing between the rubber sleeve and steel pipe pile, thereby preventing foundation leakage.
Smart Images
Figure CN119195241A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of building correction and reinforcement, in particular to a correction and reinforcement structure for shallow foundation buildings. Background Art
[0002] Shallow foundation generally refers to a foundation with a depth of 3m to 5m, or a foundation with a depth less than the width of the foundation, and a foundation that can be built with only ordinary construction such as drainage and trenching; the shallow foundation provides the necessary support for the building, transferring the building load to the underlying soil to ensure the stability and safety of the building. When a shallow foundation building tilts too much, corrective measures such as anchor static pressure piles are taken to "correct the tilt" to eliminate the adverse effects of the tilt on the building structure or foundation, avoid damage to the structure or foundation, and achieve the purpose of restoring the normal use of the building.
[0003] Anchor static pile is a method formed by combining post-planted anchor and static pile technology system, that is, first drill the pile hole and anchor hole in the building, plant the anchor with structural adhesive, and then install the reaction frame, use the building's own weight as reaction force, and use jacks to press steel pipe piles or precast concrete piles into the soil section by section. When the pile pressure force reaches the design parameter requirements, the pile is connected to the foundation to achieve the purpose of improving the foundation bearing capacity and controlling the building settlement. During the construction of anchor static pile, the pile pressure equipment is simple to operate, easy to move and flexible. The pile pressure construction can be intuitively controlled by the pile pressure force, the pile pressure quality is guaranteed, there is no vibration during construction, the noise is low, residents do not need to relocate, the pile pressure construction period is short, and the cost is low.
[0004] When the depth of the steel pipe column reaches the design parameter requirements, the pile and the foundation are poured together with concrete without unloading. When the concrete strength reaches the design requirements, the jack and the reaction frame are removed. During this process, the jack and the reaction frame are always occupied, the turnover efficiency of the jack and the reaction frame is low, and the surface of the jack and the reaction frame is easily contaminated by concrete and difficult to clean. Since the concrete inside the pile hole and the foundation concrete are not poured at the same time, gaps are likely to appear at the connection between the concrete inside the pile hole and the foundation concrete, causing groundwater to leak upward through the gaps, causing foundation leakage.
[0005] Therefore, it is necessary to provide a new deviation correction and reinforcement structure for shallow foundation buildings to solve the above problems. Summary of the invention
[0006] The technical problem solved by the invention is to provide a deviation correction and reinforcement structure for shallow foundation buildings which is convenient for fixing steel pipe columns and preventing foundation leakage.
[0007] In order to solve the above technical problems, the correction and reinforcement structure for shallow foundation buildings provided by the present invention comprises: a reinforcement mechanism installed inside the soil layer to correct and reinforce the foundation bottom plate, a fixing mechanism for fixing the steel pipe pile to the soil layer is installed on the surface of the reinforcement mechanism, the fixing mechanism comprises a fixing ring and a fixing rod, the fixing ring is welded to the top of the steel pipe pile, and the surface of the fixing ring symmetrically engages with the fixing rod; the two ends of the fixing rod are symmetrically fixedly connected to the second connecting pipe, the interior of the second connecting pipe is slidingly connected to the piston and the first connecting pipe, the two ends of the first connecting pipe are respectively fixedly connected to the piston and the rubber pad, and the rubber pad contacts the bottom surface of the foundation bottom plate; the bottom end of the steel pipe pile is installed with a grouting mechanism for injecting mortar into the soil layer; The side wall of the steel pipe pile is installed with a waterproof mechanism for preventing water leakage from the foundation bottom plate, and the waterproof mechanism includes a rubber sleeve, and two rubber sleeves with "L"-shaped cross-sections fit the side walls of the steel pipe pile, and a semi-annular mounting ring is installed on the top of the rubber sleeve, and the two mounting rings are fixed by bolts; an air bag is installed on the surface of the rubber sleeve, and the air bag and the rubber sleeve are in contact with the side wall of the foundation substrate, and the connection between the two air bags overlaps and engages with each other, and a second grouting pipe is installed inside one of the rubber sleeves and the air bag; a semi-annular limiting ring is installed at the bottom end of the rubber sleeve, and the connection between the limiting rings is engaged with each other; the side wall of the limiting ring is in contact with and engages with the extrusion rod, and the extrusion rod with a hook-shaped top is obliquely fixed to the side wall of the first connecting pipe.
[0008] Preferably, a drill bit is provided at the bottom end of the steel pipe pile, and a pile cap is welded to the top end of the steel pipe pile; the interior of the pile cap is slidably connected to a first grouting pipe, a compression plug is installed at the bottom end of the first grouting pipe, and the compression plug is slidably connected to the inner side wall of the steel pipe pile; the interior of the pile cap is symmetrically fixedly connected to a limit rod, and the limit rod contacts the top surface of the compression plug.
[0009] Preferably, a gusset plate with a "V"-shaped cross-section is symmetrically installed on the side wall of the first grouting pipe, and a spliced steel bar is clamped inside the gusset plate; other spliced steel bars are welded to the side walls of the steel pipe pile and the pile cap respectively, and the spliced steel bars are connected to the steel bars inside the foundation slab.
[0010] Preferably, a one-way valve is installed inside the first grouting pipe and the second grouting pipe, and the one-way valve includes a blocking block. The first grouting pipe and the second grouting pipe are both installed with a blocking block with a funnel-shaped interior, and the interior of the blocking block is engaged with a plug; a funnel-shaped rubber pad is installed on the side wall of the plug, and the rubber pad contacts the inner wall of the first grouting pipe and the second grouting pipe; a gear rod is installed inside the first grouting pipe and the second grouting pipe, and a spring is installed between the gear rod and the plug.
[0011] Preferably, the rubber sleeve and the airbag are provided with through holes inside, and the connecting pipe passes through the through holes and is threadedly connected to the fixing rod.
[0012] Preferably, an air inlet pipe is installed on the side wall of the airbag, and valves are installed on the side walls of the air inlet pipe and the connecting pipe.
[0013] Preferably, the surface of the fixing ring is symmetrically provided with slots, the interior of the slots is engaged with rectangular ribs, the bottom end of the fixing rod is fixedly connected to the ribs, and the fixing rod abuts against the top surface of the slots.
[0014] Preferably, a first mounting groove for pile pressing is provided inside the foundation base plate, a second mounting groove is provided at the bottom end of the first mounting groove, the fixing ring and the fixing rod are located inside the second mounting groove, the spliced steel bars are located inside the first mounting groove, and the rubber sleeve is located at the connection between the first mounting groove and the second mounting groove.
[0015] Preferably, the grouting mechanism includes a connecting column, the two ends of which are respectively fixedly connected to the drill bit and the steel pipe pile, and the top of the drill bit is installed with a connecting ring with an arc-shaped side wall for pushing soil outward; multiple nozzles are installed obliquely on the side wall of the connecting column, and the connecting column is threadedly connected to multiple joints, and an elastic plate with an arc-shaped side wall is installed at one end of the joint, and the elastic plate abuts against the nozzle outlet.
[0016] Compared with the related art, the deviation correction and reinforcement structure for shallow foundation buildings provided by the present invention has the following beneficial effects: The present invention provides a deviation correction reinforcement structure for shallow foundation buildings. When the depth of the steel pipe pile reaches the design parameter requirement, the fixing rod is placed on the surface of the fixing ring, and then the rubber sleeve is fixed to the side wall of the steel pipe pile through the mounting ring and the bolt, and the side wall of the rubber sleeve is stuck at the connection between the first mounting groove and the second mounting groove, the connecting pipe is connected to the fixing rod, and an air compressor injects gas into the fixing rod through the connecting pipe, so that the pressure of the gas inside the fixing rod is increased, and the piston and the first connecting pipe are pushed to move upward inside the second connecting pipe. The rubber pad is made to resist and push the bottom surface of the foundation bottom plate. As air is continuously injected, the internal pressure of the fixing rod gradually increases, so that the extrusion force between the rubber pad and the foundation bottom plate becomes larger and larger, thereby gradually increasing the downward extrusion force of the fixing rod on the fixing ring and the steel pipe pile, thereby fixing the steel pipe pile in the soil layer, avoiding the steel pipe pile from rebounding upward and affecting the reinforcement effect of the steel pipe pile, and removing the jack and the reaction frame to facilitate the turnover of the jack and the reaction frame, and avoiding the surface of the jack and the reaction frame from being contaminated with concrete, so as to keep them clean; when the first connecting pipe moves upward, it drives the extrusion rod When the airbag moves upward, the extrusion rod squeezes the limiting ring and the rubber sleeve upward, and the extrusion rod hooks the limiting ring to fix the rubber sleeve at the connection between the first mounting groove and the second mounting groove; when air is injected into the airbag, the airbag expands and hits the inner wall of the second mounting groove, so that the airbag squeezes the second mounting groove and the rubber sleeve, so that the rubber sleeve is tightly attached to the side wall of the steel pipe pile, and the sealing between the rubber sleeve and the steel pipe pile is increased; mortar is injected into the second mounting groove through the second grouting pipe on the side wall of the airbag, and the second mounting groove is filled with mortar. When the mortar fills the second mounting groove, the rubber sleeve is squeezed upward. Since the limiting ring is hooked by the squeezing rod, the squeezing rod and the limiting ring fix the edge of the rubber sleeve to prevent the bottom end of the rubber sleeve from detaching from the second mounting groove. The rubber sleeve is squeezed and bends upward at the connection between the first mounting groove and the second mounting groove, increasing the squeezing force and contact area of the rubber sleeve at the connection between the first mounting groove and the second mounting groove, thereby increasing the sealing between the rubber sleeve at the connection between the first mounting groove and the second mounting groove, thereby preventing leakage of the foundation floor. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A structural schematic diagram of a preferred embodiment of the deviation correction and reinforcement structure for shallow foundation buildings provided by the present invention; Figure 2 for Figure 1 An enlarged schematic diagram of the structure at A shown; Figure 3 for Figure 1 An enlarged schematic diagram of the structure at B shown; Figure 4 for Figure 2 An enlarged schematic diagram of the structure at position C is shown; Figure 5 for Figure 4 An enlarged schematic diagram of the structure at D shown; Figure 6 for Figure 2 Schematic diagram of the internal structure of the pile cap shown; Figure 7 for Figure 6 An enlarged schematic diagram of the structure at position E is shown; Figure 8 for Figure 2 The schematic diagram of the waterproof mechanism structure shown; Fig. 9 This is a schematic diagram of the bottom structure of the steel pipe pile provided by the present invention.
[0018] Numbers in the figure: 1. reinforcement mechanism, 11. steel pipe pile, 12. drill bit, 13. pile cap, 14. first grouting pipe, 15. buckle plate, 16. spliced steel bars, 17. compression plug, 18. limit rod, 19. mortar layer, 2. foundation bottom plate, 21. soil layer, 22. first installation groove, 23. second installation groove, 3. fixing mechanism, 31. fixing ring, 32. fixing rod, 33. connecting pipe, 34. valve, 35. first connecting pipe, 36. second connecting pipe, 37. rubber pad, 38. extrusion rod, 39. rib, 310. slot, 311. piston, 4. waterproof mechanism, 41. rubber sleeve, 42. air bag, 43. second grouting pipe, 44. mounting ring, 45. bolt, 46. air inlet pipe, 47. limit ring, 48. through hole, 5. grouting mechanism, 51. connecting column, 52. nozzle, 53. elastic plate, 54. connecting ring, 55. joint, 6. one-way valve, 61. block, 62. plug, 63. rubber pad, 64. spring, 65. gear lever. DETAILED DESCRIPTION
[0019] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.
[0020] See also Figures 1 to 9 , Figure 1 A structural schematic diagram of a preferred embodiment of the deviation correction and reinforcement structure for shallow foundation buildings provided by the present invention; Figure 2 for Figure 1 An enlarged schematic diagram of the structure at A shown; Figure 3 for Figure 1 An enlarged schematic diagram of the structure at B shown; Figure 4 for Figure 2 An enlarged schematic diagram of the structure at position C is shown; Figure 5 for Figure 4An enlarged schematic diagram of the structure at D shown; Figure 6 for Figure 2 Schematic diagram of the internal structure of the pile cap shown; Figure 7 for Figure 6 An enlarged schematic diagram of the structure at position E is shown; Figure 8 for Figure 2 The schematic diagram of the waterproof mechanism structure shown; Fig. 9 The bottom structure diagram of the steel pipe pile provided by the present invention. The correction and reinforcement structure for shallow foundation buildings includes: a reinforcement mechanism 1 installed inside the soil layer 21 to correct and reinforce the foundation bottom plate 2, the reinforcement mechanism 1 includes a steel pipe pile 11, the bottom end of the steel pipe pile 11 is provided with a conical drill bit 12, in order to facilitate the drill bit 12 to squeeze the soil outward, so that the steel pipe pile 11 can quickly enter the soil layer 21; the top of the steel pipe pile 11 is welded with a pile cap 13; the inside of the pile cap 13 is slidably connected to the first grouting pipe 14; the bottom end of the steel pipe pile 11 is installed with a grouting mechanism 5 for injecting mortar into the soil layer 21; the grouting mechanism 5 includes a connecting column 51, the two ends of the connecting column 51 are respectively fixedly connected to the drill bit 12 and the steel pipe pile 11, the A connecting ring 54 with an arc-shaped side wall for pushing soil outward is installed at the top of the drill bit 12. When the drill bit 12 drills into the soil layer, the soil contacts the connecting ring 54 with an arc-shaped side wall, and the connecting ring 54 pushes the soil outward to reduce the probability of soil contacting the connecting column 51; the diameter of the connecting column 51 is smaller than the diameter of the drill bit 12 and the steel pipe pile 11, and the maximum vertical distance between the nozzle 52 and the center of the connecting column 51 is smaller than the diameter of the drill bit 12. When the drill bit 12 enters the soil layer, the drill bit 12 and the connecting ring 54 push the soil outward, and together with the elastic plate 53, protect the nozzle 52 to prevent soil from entering the interior of the nozzle 52; A plurality of nozzles 52 are obliquely installed on the side wall of the connecting column 51, and the connecting column 51 is threadedly connected to a plurality of joints 55, and an elastic plate 53 with an arc-shaped side wall is installed at one end of the joint 55, and the elastic plate 53 abuts against the discharge port of the nozzle 52; when the depth of the steel pipe pile 11 reaches the design parameter requirement, the pile cap 13 is welded to the top of the steel pipe pile 11, and the high-pressure grouting machine is connected to the first grouting pipe 14, so that the high-pressure grouting machine quickly injects mortar through the first mortar pipe 14 into the interior of the steel pipe pile 11 and the connecting column 51, and the mortar is quickly ejected through the nozzle 52 on the side wall of the connecting column 51, The mortar impacts the elastic plate 53 with elasticity, causing the elastic plate 53 to bend downward, and the elastic plate 53 is separated from the discharge port of the nozzle 52, so that the mortar is sprayed outward from the nozzle 52 into the soil layer at an angle, and the mortar solidifies in the soil layer and the side wall of the steel pipe pile 11, thereby increasing the stability and firmness of the steel pipe pile 11 in the soil layer and improving the supporting force of the steel pipe pile 11 on the foundation bottom plate 2; the mortar sprayed downward at an angle from the nozzle 52 forms a plurality of mortar layers 19 inclined downward, and when the foundation bottom plate 2 squeezes the steel pipe pile 11 downward, the plurality of mortar layers 19 inclined downward provide support to the steel pipe pile 11 at an angle upward (such as the attached Fig. 9 As shown), the resistance of the steel pipe piles 11 to sink downward in the soil layer is increased, so that the steel pipe piles 11 can effectively provide support for the foundation bottom plate 2 to prevent the foundation bottom plate 2 from sinking.
[0021] A compression plug 17 is installed at the bottom end of the first grouting pipe 14, and the compression plug 17 is slidably connected to the inner side wall of the steel pipe pile 11; the interior of the pile cap 13 is symmetrically fixedly connected to a limit rod 18, and the limit rod 18 contacts the top surface of the compression plug 17; a gusset plate 15 with a "V"-shaped cross section is symmetrically installed on the side wall of the first grouting pipe 14, and a spliced steel bar 16 is clamped inside the gusset plate 15; the side walls of the steel pipe pile 11 and the pile cap 13 are respectively welded with other spliced steel bars. The steel bar 16 is connected to the steel bar inside the foundation slab 2. When the steel pipe pile 11 is filled, the mortar pushes the sealing plug 17 to move upward to resist the limit rod 18. The limit rod 18 fixes the sealing plug 17 inside the top of the steel pipe pile 11 and prevents the mortar from being discharged from the steel pipe pile 11. After the mortar injection inside the steel pipe pile 11 is completed, the spliced steel bar 16 is welded to the pile cap 13 and the side wall of the steel pipe pile 11. Then, the spliced steel bars 16 are connected to the steel bars inside the foundation slab 2, and the first grouting pipe 14 is squeezed downward. The first grouting pipe 14 drives the compression plug 17 to move downward, and the mortar inside the steel pipe pile 11 is squeezed again to compact the mortar inside the steel pipe pile 11; at the same time, the two spliced steel bars 16 on the upper layer are placed inside the gusset plate 15 to fix the compression plug 17. At the same time, the mortar inside the steel pipe pile 11 reversely squeezes the compression plug 17, the first grouting pipe 14 and the gusset plate 15, so that the gusset plate 15 squeezes the spliced steel bars 16 upward, and the spliced steel bars 16 are stuck in the gusset plate 15 to fix the spliced steel bars 16; the steel pipe pile 11 is connected to the foundation slab 2 through the spliced steel bars 16, so that the mortar inside the steel pipe pile 11 squeezes the foundation slab 2 upward, thereby improving the bearing capacity of the foundation slab 2 and increasing the firmness and stability of the connection between the steel pipe pile 11 and the spliced steel bars 16.
[0022] The surface of the reinforcement mechanism 1 is installed with a fixing mechanism 3 for fixing the steel pipe pile 11 to the soil layer 21, the fixing mechanism 3 includes a fixing ring 31 and a fixing rod 32, the fixing ring 31 is welded to the top of the steel pipe pile 11, and the surface of the fixing ring 31 symmetrically engages with the fixing rod 32; the two ends of the fixing rod 32 are symmetrically fixedly connected to the second connecting pipe 36, the interior of the second connecting pipe 36 is slidably connected to the piston 311 and the first connecting pipe 35, the two ends of the first connecting pipe 35 are respectively fixedly connected to the piston 311 and the rubber pad 37, and the rubber pad 37 contacts the bottom surface of the foundation bottom plate 2; the surface of the fixing ring 31 is symmetrically provided with a card slot 310, the interior of the card slot 310 is engaged with a rectangular rib 39, the bottom end of the fixing rod 32 is fixedly connected to the rib 39, and the fixing rod 32 contacts the top surface of the card slot 310; after the depth of the steel pipe pile 11 reaches the design parameter requirements, the fixing rod 32 is placed on the surface of the fixing ring 31, the fixing rod 32 The rib 39 of the side wall enters the slot 310, thereby preventing the fixing rod 32 from rotating inside the fixing ring 31, so that the rubber pad 37 is set upward; when the fixing rod 32 is placed, gas is injected into the fixing rod 32 through the connecting pipe 33 by an air compressor, so that the pressure of the gas inside the fixing rod 32 increases, and the piston 311 and the first connecting pipe 35 move upward inside the second connecting pipe 36, so that the rubber pad 37 pushes the bottom surface of the foundation bottom plate 2 against the base bottom plate 2. As air is continuously injected, the internal pressure of the fixing rod 32 gradually increases, so that the extrusion force between the rubber pad 37 and the foundation bottom plate 2 becomes larger and larger, so that the downward extrusion force of the fixing rod 32 on the fixing ring 31 and the steel pipe pile 11 gradually increases, so that the steel pipe pile 11 is fixed in the soil layer 21, and the steel pipe pile 11 is prevented from rebounding upward, so as to facilitate the removal of the jack and the reaction frame above the steel pipe pile 11, and facilitate the turnover of the jack and the reaction frame.
[0023] The side wall of the steel pipe pile 11 is installed with a waterproof mechanism 4 for preventing water leakage of the foundation base plate 2. The waterproof mechanism 4 includes a rubber sleeve 41. Two rubber sleeves 41 with "L"-shaped cross-sections fit the side wall of the steel pipe pile 11. A semi-circular mounting ring 44 is installed on the top of the rubber sleeve 41. The two mounting rings 44 are fixed by bolts 45. An air bag 42 is installed on the surface of the rubber sleeve 41. The air bag 42 and the rubber sleeve 41 are against the side wall of the foundation base plate 2, and the connection between the two air bags 42 overlaps and engages with each other. The inner surface of one of the rubber sleeves 41 and the air bag 42 is fixed by bolts 45. The second grouting pipe 43 is installed at the bottom of the rubber sleeve 41; a semi-circular limiting ring 47 is installed at the bottom end of the rubber sleeve 41, and the connection of the limiting ring 47 is mutually engaged; the side wall of the limiting ring 47 contacts and engages the extrusion rod 38, and the extrusion rod 38 with a hook shape at the top is obliquely fixed to the side wall of the first connecting pipe 35; the rubber sleeve 41 is fixed to the side wall of the steel pipe pile 11 through the mounting ring 44 and the bolt 45, and the side wall of the rubber sleeve 41 is stuck at the connection between the first mounting groove 22 and the second mounting groove 23; when the first connecting pipe 34 moves upward, it drives the extrusion rod 38 to move upward. The rod 38 moves upward, and the extrusion rod 38 squeezes the limiting ring 31 and the rubber sleeve upward, and the extrusion rod hooks the limiting ring 31 to fix the rubber sleeve 41 at the connection between the first mounting groove 22 and the second mounting groove 23; when air is injected into the airbag 42, the airbag 42 expands and hits the inner wall of the second mounting groove 23, so that the airbag 42 squeezes the second mounting groove 23 and the rubber sleeve 41, so that the rubber sleeve 41 is tightly attached to the side wall of the steel pipe pile 11, thereby increasing the sealing between the rubber sleeve 41 and the steel pipe pile 11, and The second grouting pipe 43 of the side wall of the airbag 42 injects mortar into the second mounting groove 23, and the mortar fills the second mounting groove 23. When the mortar fills the second mounting groove 23, the rubber sleeve 41 is squeezed upward. Since the limiting ring 47 is hooked by the squeezing rod 38, the squeezing rod 38 and the limiting ring 47 fix the edge of the rubber sleeve 41 to prevent the bottom end of the rubber sleeve 41 from detaching from the second mounting groove 23. The rubber sleeve 41 is squeezed and bends upward at the connection between the first mounting groove 22 and the second mounting groove 23 (as shown in the attached figure). Figure 4 As shown), the extrusion force and contact area of the rubber sleeve 41 at the connection between the first mounting groove 22 and the second mounting groove 23 are increased, thereby increasing the sealing between the rubber sleeve 41 at the connection between the first mounting groove 22 and the second mounting groove 23, thereby preventing the basic base plate 2 from leaking.
[0024] The interior of the foundation slab 2 is provided with a first mounting groove 22 for pile pressing, and the bottom end of the first mounting groove 22 is provided with a second mounting groove 23, and the fixing ring 31 and the fixing rod 32 are located inside the second mounting groove 23; when the steel pipe pile 11 is needed to correct the deviation and reinforce the foundation slab 2, the first mounting groove 22 is first drilled out on the surface of the foundation slab 2, and then the second mounting groove 23 is dug out below the first mounting groove 22, so as to facilitate the fixing of the steel pipe pile 11 inside the second mounting groove 23. The splicing steel bar 16 is located inside the first mounting groove 22, so as to facilitate the connection of the steel pipe pile 11 with the foundation slab 2 through the splicing steel bar 16; and the rubber sleeve 41 is located at the connection between the first mounting groove 22 and the second mounting groove 23, so as to facilitate the water in the soil layer 21 to seep upward into the interior of the first mounting groove 22.
[0025] A through hole 48 is provided inside the rubber sleeve 41 and the airbag 42, and the connecting pipe 33 passes through the through hole 48 and is threadedly connected to the fixing rod 32. In order to facilitate the connecting pipe 33 to pass through the through hole 48 and enter the interior of the second mounting groove 23, high-pressure air is injected into the fixing rod 32 through the connecting pipe 33.
[0026] An air intake pipe 46 is installed on the side wall of the airbag 42 to inject air into the airbag 42 through the air intake pipe 46 ; valves 34 are installed on the side walls of the air intake pipe 46 and the connecting pipe 33 to control the opening and closing of the air intake pipe 46 and the connecting pipe 33 through the valve 34 .
[0027] The first grouting pipe 14 and the second grouting pipe 43 are both internally installed with a one-way valve 6, and the one-way valve 6 includes a block 61. The first grouting pipe 14 and the second grouting pipe 43 are both internally installed with a funnel-shaped block 61, and the block 61 is internally engaged with a plug 62; a funnel-shaped rubber pad 63 is installed on the side wall of the plug 62, and the rubber pad 63 contacts the inner side wall of the first grouting pipe 14 and the second grouting pipe 43; a lever 65 is installed inside the first grouting pipe 14 and the second grouting pipe 43, and a spring 64 is installed between the lever 65 and the plug 62; when grouting is injected into the grouting pipe, the mortar squeezes the plug 62 downward through the block 61 , the plug 62 moves downward to compress the spring 64, open the block 61, and allow the mortar to pass through the block 61 and enter the interior of the grouting pipe, and the mortar presses the rubber pad 63 downward, and the rubber pad 63 contracts, which is convenient for the mortar to slide over the side wall of the rubber pad 63 and move inside the grouting pipe; when grouting into the grouting pipe is stopped, the mortar flows back inside the grouting pipe and pushes the rubber pad 63 to move upward and open, and the rubber pad 63 is close to the side wall of the grouting pipe to prevent the mortar from flowing out from the top of the grouting pipe. At the same time, the rubber pad 63 and the spring 64 push the plug 62 to move upward, and the plug 62 moves to engage the block 61 to close the grouting pipe and prevent the mortar from leaking from the inside of the grouting pipe.
[0028] The working principle of the correction and reinforcement structure for shallow foundation buildings provided by the present invention is as follows: when the depth of the steel pipe pile 11 is one meter away from the designed depth, the fixing ring 31 is welded on the side wall of the steel pipe pile 11, and the steel pipe pile 11 is pressed into the soil layer 11 using the jack and the reaction frame, and the steel pipe pile 11 drives the fixing ring 31 to enter the second installation groove 23. The fixing rod 32 is placed in the slot 310 on the surface of the fixing ring 32, the through hole 48 is aligned with the installation position of the connecting pipe 33 on the surface of the fixing rod 32, the rubber sleeve 41 is sleeved on the side wall of the steel pipe pile 11, and then the rubber sleeve 41 is fixed to the side wall of the steel pipe pile 11 through the mounting ring 44 and the bolt 45, and the side wall of the rubber sleeve 41 is stuck at the connection between the first installation groove 22 and the second installation groove 23. The connecting pipe 33 penetrates through the through hole 48 and is threadedly connected to the fixing rod 32. The air compressor injects gas into the fixing rod 32 through the connecting pipe 33, so that the pressure of the gas inside the fixing rod 32 increases, and the first connecting pipe 35 and the rubber pad 37 move upward, so that the rubber pad 37 moves upward to squeeze the bottom surface of the base bottom plate 2. When the first connecting pipe 34 moves upward, it drives the squeezing rod 38 to move upward, and the squeezing rod 38 squeezes the limit ring 31 and the rubber sleeve 41 upward. The squeezing rod hooks the limit ring 31 and fixes the rubber sleeve 41 at the connection between the first mounting groove 22 and the second mounting groove 23. As air is continuously injected into the interior of the fixing rod 32, the squeezing force between the rubber pad 37 and the foundation bottom plate 2 becomes greater and greater, thereby gradually increasing the downward squeezing force of the fixing rod 32 on the fixing ring 31 and the steel pipe pile 11, thereby fixing the steel pipe pile 11 in the soil layer 21, preventing the steel pipe pile 11 from rebounding upward, making it easier to remove the jack and reaction frame above the steel pipe pile 11, and facilitating the turnover of the jack and reaction frame.An air compressor is connected to the air inlet pipe 46. When air is injected into the airbag 42, the airbag 42 expands and hits the inner wall of the second mounting groove 23. When the airbag 42 expands, the two airbags 42 overlap and squeeze each other at the connection, thereby increasing the sealing of the airbag 42 connection. At the same time, the airbag 42 expands and squeezes the side wall of the connecting pipe 33, thereby increasing the sealing of the connecting pipe 33 in the through hole 38. As the airbag 42 expands and squeezes the second mounting groove 23 and the rubber sleeve 41, the sealing between the airbag 42 and the second mounting groove 23 is increased, and the rubber sleeve 41 is tightly attached to the side wall of the steel pipe pile 11, thereby increasing the sealing between the rubber sleeve 41 and the steel pipe pile 11. The second grouting pipe 43 injects mortar into the second mounting groove 23, and the mortar fills the second mounting groove 23. When the mortar fills the second mounting groove 23, the rubber sleeve 41 is squeezed upward. Since the limiting ring 47 is hooked by the squeezing rod 38, the squeezing rod 38 and the limiting ring 47 fix the edge of the rubber sleeve 41 to prevent the bottom end of the rubber sleeve 41 from escaping from the second mounting groove 23. The rubber sleeve 41 is squeezed and bends upward at the connection between the first mounting groove 22 and the second mounting groove 23, thereby increasing the squeezing force and contact area of the rubber sleeve 41 at the connection between the first mounting groove 22 and the second mounting groove 23, thereby increasing the sealing of the rubber sleeve 41 at the bottom end of the first mounting groove 23. The accumulated water inside the steel pipe pile 11 is excluded, the pile cap 13 is welded to the top of the steel pipe pile 11, and the high-pressure grouting machine is connected to the first grouting pipe 14, so that the high-pressure grouting machine can quickly and high-pressure inject mortar into the interior of the steel pipe pile 11 and the connecting column 51 through the first mortar pipe 14, and the mortar is quickly sprayed into the soil layer through the nozzle 52 on the side wall of the connecting column 51, and the mortar sprayed downward from the nozzle 52 forms a plurality of mortar layers 19 inclined downward. When the foundation bottom plate 2 squeezes the steel pipe pile 11 downward, the plurality of mortar layers 19 inclined downward provide support for the steel pipe pile 11 upward, increase the resistance of the steel pipe pile 11 to downward settlement in the soil layer, so that the steel pipe pile 11 can effectively provide support for the foundation bottom plate 2, and avoid settlement of the foundation bottom plate 2.When the steel pipe pile 11 is filled, the mortar pushes the sealing plug 17 to move upward and resist the limit rod 18, and the limit rod 18 fixes the sealing plug 17 inside the top of the steel pipe pile 11 and prevents the mortar from being discharged from the steel pipe pile 11; after the mortar injection inside the steel pipe pile 11 is completed, the spliced steel bar 16 is welded to the pile cap 13 and the side wall of the steel pipe pile 11, and then the spliced steel bar 16 is connected to the steel bar inside the foundation bottom plate 2, and the first grouting pipe 14 is squeezed downward, and the first grouting pipe 14 drives the compression plug 17 to move downward to squeeze the mortar inside the steel pipe pile 11, so as to fill the steel pipe pile 11 with mortar. The internal mortar is compacted; at the same time, the two spliced steel bars 16 on the upper layer are placed inside the gusset plate 15, and the compression plug 17 is fixed. At the same time, the mortar inside the steel pipe pile 11 is reversely squeezed so that the gusset plate 15 squeezes the spliced steel bars 16 upward to fix the spliced steel bars 16, and concrete is poured into the first installation groove 22. The steel pipe pile 11 is connected to the foundation slab 2 through the concrete and the spliced steel bars 16, and at the same time, the mortar inside the steel pipe pile 11 squeezes the foundation slab 2 upward, thereby improving the bearing capacity of the foundation slab 2 and increasing the firmness and stability of the connection between the steel pipe pile 11 and the spliced steel bars 16.
[0029] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A deviation correction and reinforcement structure for shallow foundation buildings, characterized in that: include: A reinforcement mechanism (1) installed inside a soil layer (21) to correct and reinforce a foundation bottom plate (2), the reinforcement mechanism (1) comprising a steel pipe pile (11); a fixing mechanism (3) for fixing the steel pipe pile (11) to the soil layer (21) is installed on the surface of the reinforcement mechanism (1), the fixing mechanism (3) comprising a fixing ring (31) and a fixing rod (32), the fixing ring (31) being welded to the top of the steel pipe pile (11), and the surface of the fixing ring (31) symmetrically engaging the fixing rod (32); the two ends of the fixing rod (32) being symmetrically fixedly connected to a second connecting pipe (36), the interior of the second connecting pipe (36) being slidably connected to a piston (311) and a first connecting pipe (35), the two ends of the first connecting pipe (35) being respectively fixedly connected to the piston (311) and a rubber pad (37), and the rubber pad (37) being in contact with the bottom surface of the foundation bottom plate (2); A grouting mechanism (5) for injecting mortar into the soil layer (21) is installed at the bottom end of the steel pipe pile (11); The side wall of the steel pipe pile (11) is installed with a waterproof mechanism (4) for preventing water leakage of the foundation bottom plate (2), the waterproof mechanism (4) comprising a rubber sleeve (41), two rubber sleeves (41) with "L"-shaped cross-sections being fitted to the side wall of the steel pipe pile (11), a semi-annular mounting ring (44) being installed at the top end of the rubber sleeve (41), the two mounting rings (44) being fixed by bolts (45); an air bag (42) being installed on the surface of the rubber sleeve (41), the air bag (42) and the rubber sleeve (41) being pressed against each other. The rubber sleeve (41) and the airbag (42) are connected to each other at the joints thereof, and a second grouting pipe (43) is installed inside one of the rubber sleeves (41) and the airbag (42); a semi-circular limiting ring (47) is installed at the bottom end of the rubber sleeve (41), and the joints of the limiting rings (47) are mutually engaged; the side wall of the limiting ring (47) contacts and engages with the extrusion rod (38), and the extrusion rod (38) with a hook-shaped top end is obliquely fixed to the side wall of the first connecting pipe (35).
2. The deviation correction and reinforcement structure for shallow foundation buildings according to claim 1 is characterized in that: A drill bit (12) is provided at the bottom end of the steel pipe pile (11), and a pile cap (13) is welded to the top end of the steel pipe pile (11); the interior of the pile cap (13) is slidably connected to a first grouting pipe (14), a compression plug (17) is installed at the bottom end of the first grouting pipe (14), and the compression plug (17) is slidably connected to the inner side wall of the steel pipe pile (11); the interior of the pile cap (13) is symmetrically fixedly connected to a limiting rod (18), and the limiting rod (18) contacts the top surface of the compression plug (17).
3. The deviation correction and reinforcement structure for shallow foundation buildings according to claim 2 is characterized in that: A gusset plate (15) with a V-shaped cross section is symmetrically mounted on the side wall of the first grouting pipe (14), and a spliced steel bar (16) is engaged inside the gusset plate (15); other spliced steel bars (16) are respectively welded to the side walls of the steel pipe pile (11) and the pile cap (13), and the spliced steel bars (16) are connected to the steel bars inside the foundation slab (2).
4. The deviation correction and reinforcement structure for shallow foundation buildings according to claim 2 is characterized in that: A one-way valve (6) is installed inside the first grouting pipe (14) and the second grouting pipe (43), and the one-way valve (6) comprises a clamping block (61). The first grouting pipe (14) and the second grouting pipe (43) are both installed inside the clamping block (61) with a funnel-shaped interior, and the interior of the clamping block (61) is engaged with a plug (62); a funnel-shaped rubber pad (63) is installed on the side wall of the plug (62), and the rubber pad (63) contacts the inner side wall of the first grouting pipe (14) and the second grouting pipe (43); a stopper rod (65) is installed inside the first grouting pipe (14) and the second grouting pipe (43), and a spring (64) is installed between the stopper rod (65) and the plug (62).
5. The deviation correction and reinforcement structure for shallow foundation buildings according to claim 1 is characterized in that: A through hole (48) is provided inside the rubber sleeve (41) and the air bag (42), and the connecting pipe (33) passes through the through hole (48) and is threadedly connected to the fixing rod (32).
6. The deviation correction and reinforcement structure for shallow foundation buildings according to claim 5 is characterized in that: An air intake pipe (46) is installed on the side wall of the air bag (42), and valves (34) are installed on the side walls of the air intake pipe (46) and the connecting pipe (33).
7. The deviation correction and reinforcement structure for shallow foundation buildings according to claim 1 is characterized in that: The surface of the fixing ring (31) is symmetrically provided with a clamping groove (310), the interior of the clamping groove (310) is clamped with a rectangular parallelepiped rib (39), the bottom end of the fixing rod (32) is fixedly connected to the rib (39), and the fixing rod (32) contacts the top surface of the clamping groove (310).
8. The deviation correction and reinforcement structure for shallow foundation buildings according to claim 3 is characterized in that: A first mounting groove (22) for pile pressing is provided inside the foundation bottom plate (2), a second mounting groove (23) is provided at the bottom end of the first mounting groove (22), the fixing ring (31) and the fixing rod (32) are located inside the second mounting groove (23), the spliced steel bar (16) is located inside the first mounting groove (22), and the rubber sleeve (41) is located at the connection between the first mounting groove (22) and the second mounting groove (23).
9. The deviation correction and reinforcement structure for shallow foundation buildings according to claim 2, characterized in that: The grouting mechanism (5) comprises a connecting column (51), the two ends of which are respectively fixedly connected to the drill bit (12) and the steel pipe pile (11), and the top end of the drill bit (12) is provided with a connecting ring (54) for pushing soil outwards and having an arc-shaped side wall; a plurality of nozzles (52) are obliquely installed on the side wall of the connecting column (51), the connecting column (51) is threadedly connected to a plurality of joints (55), one end of the joint (55) is provided with an elastic plate (53) having an arc-shaped side wall, and the elastic plate (53) abuts against the discharge port of the nozzle (52).