Building pile foundation reinforcing structure of soft soil foundation

Abstract

The invention relates to the technical field of pile foundation reinforcement, and provides a soft soil foundation building pile foundation reinforcing structure which comprises a fixing cylinder, a plurality of reinforcing plates are slidably mounted in the fixing cylinder, pressing rings are in threaded connection with the positions, at the two ends of the reinforcing plates, of the inner wall of the fixing cylinder, and two arch frames are fixedly connected to the outer wall of the fixing cylinder; a supporting plate is installed at the bottom of the arch-shaped frame, and an adjusting mechanism is arranged between the arch-shaped frame and the supporting plate. The pile foundation is reinforced through the reinforcing plate, so that force borne by the pile foundation is conducted to the arch-shaped frame through the reinforcing plate and dispersed to the foundation, and therefore the pressure of the reinforcing structure on the foundation is reduced; and the supporting plate is in full contact with the settled foundation through the adjusting mechanism, so that the load borne by the pile foundation can be dispersed to the foundation through the whole supporting plate, stress concentration caused by reduction of the contact surface of the supporting plate and the foundation is avoided, and the long-term stability and the reinforcing effect of the reinforcing structure are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of pile foundation reinforcement, in particular to a building pile foundation reinforcement structure for a soft soil foundation. Background Art

[0002] Pile foundation is a form of foundation for a building structure, mainly composed of piles and caps. Piles are columnar components that penetrate deep into the soil. Their function is to transfer the load of the upper building to the deep stable soil or rock layer to reduce the settlement of the foundation and ensure the stability of the building. The caps are components that connect the pile tops, transfer the loads of the piles to each other, and finally transfer the load to the foundation.

[0003] Patent CN114606935A discloses a pile foundation reinforcement structure and reinforcement method, including a base arranged on the outside of the pile basic body, the base is provided with a side plate for reinforcing the pile basic body, the side plate is rotatably arranged on the base, the base is provided with an abutment mechanism for driving the side plate to rotate to abut against the pile basic body, a plurality of side plates are provided, and the plurality of side plates are arranged around the pile basic body, an auxiliary plate is provided on one side of the side plate close to the adjacent side plate, the auxiliary plate abuts against the auxiliary plate on the adjacent side plate, and a clamping sleeve for fixing the position of the auxiliary plate is provided on the outside of the auxiliary plate. This application has the effect of enhancing the reinforcement of the pile foundation.

[0004] However, this reinforcement structure transmits all the impact, tilt and other loads on the pile foundation directly to the foundation through the base, increasing the load on the foundation. At the same time, under the influence of rain and other environments, the soft soil foundation is prone to depression, making it difficult to evenly distribute the load borne by the base to the foundation, thereby causing stress concentration and further damaging the foundation. During the long-term reinforcement process, the foundation surface will be severely damaged, thereby reducing the reinforcement effect of the reinforcement structure.

[0005] Therefore, the present invention provides a building pile foundation reinforcement structure for a soft soil foundation. Summary of the invention

[0006] The invention provides a building pile foundation reinforcement structure for a soft soil foundation, which improves the reinforcement effect by reducing the pressure of the pile foundation on the foundation, so as to solve the problems existing in the background technology.

[0007] The technical solution of the present invention is as follows: A building pile foundation reinforcement structure for soft soil foundation, comprising: a fixed cylinder, in which a plurality of reinforcement plates are slidably installed. The plurality of reinforcement plates are arc-shaped and evenly distributed in the fixed cylinder. Both ends of the reinforcement plate are frustum-shaped. Pressing rings are threadedly connected to the inner wall of the fixed cylinder at both ends of the reinforcement plate. One end of the pressing ring close to the reinforcement plate is frustum-shaped and matches both ends of the reinforcement plate. Two arch-shaped frames are fixedly connected to the outer wall of the fixed cylinder. A support plate is installed at the bottom of the arch-shaped frame. An adjusting mechanism is arranged between the arch-shaped frame and the support plate.

[0008] Preferably, a plurality of sliding grooves are formed on the inner wall of the fixed cylinder, and the number of the sliding grooves is the same as that of the reinforcement plates. Connecting blocks are slidably connected in the sliding grooves. One end of the connecting block is provided with a first spring between it and the sliding groove, and the other end is fixedly connected to the reinforcement plate.

[0009] Preferably, a slider is slidably connected between the two arch-shaped frames on the outer wall of the fixed cylinder. A cylinder is fixedly connected to the slider. Connecting rods are connected to both ends of the cylinder. One end of the connecting rod is fixedly connected to the end of the pressing ring away from the reinforcement plate, and the other end extends into the cylinder.

[0010] Preferably, annular grooves are formed on both end faces of the fixed cylinder. A plurality of first fixing blocks are arranged at the end of the pressing ring away from the reinforcement plate. The cross section of the first fixing block is U-shaped. One end of the first fixing block is fixedly connected to the pressing ring, and the other end is located in the annular groove. Threaded holes one and two are respectively provided at the annular groove of the fixed cylinder and the first fixing block, and a first bolt is installed through the threaded hole one and the threaded hole two.

[0011] Preferably, a circular hole is formed in the center of the support plate.

[0012] Preferably, the adjusting mechanism includes a first spherical groove, a second spherical groove, a convex block and a sliding cylinder. The first spherical groove is formed at the bottom of both ends of the arch-shaped frame, and a first sphere is rollably connected in the first spherical groove. The second spherical groove is formed at the top of the support plate, and a second sphere is rollably connected through the second spherical groove. The convex block is fixedly connected to both ends of the arch-shaped frame. The sliding cylinder is fixedly connected to the second sphere. A sliding rod is slidably connected in the sliding cylinder. One end of the sliding rod is fixedly connected to the first sphere. A limiting block is slidably connected to the sliding rod. The opposite sides of the convex block and the limiting block are both inclined planes, and a wedge block is arranged between the convex block and the limiting block. The wedge block matches the inclined planes of the convex block and the limiting block.

[0013] Preferably, the adjusting mechanism further includes a sliding block slidably connected to the support plate. A threaded rod is rotatably connected to the sliding block. The threaded rod penetrates through the sliding block and is threadedly connected to the wedge block.

[0014] Preferably, the adjustment mechanism also includes a fixed block 2 fixedly connected to the support plate, a sliding column is slidably connected inside the fixed block 2, the sliding column passes through the fixed block 2, and one end is fixedly connected to a fixed sleeve, the fixed sleeve is arranged on the sliding block, and a spring 2 is installed on the outside of the sliding column between the fixed sleeve and the fixed block 2.

[0015] Preferably, threaded hole three and threaded hole four are provided on the arch frame and the support plate, and bolt two is installed through threaded hole three and threaded hole four.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention reinforces the pile foundation by a reinforcement plate. When the pile foundation is subjected to vibration or impact, the force exerted on the pile foundation is transmitted to the pressure ring and the fixing tube through the reinforcement plate, and then to the arch frame. The load exerted on the pile foundation is dispersed to the support plate through the arch frame, and then dispersed to the foundation through the support plate, thereby reducing the pressure exerted on the foundation by the reinforcement structure.

[0017] 2. The present invention uses an adjustment mechanism to make the support plate fully contact with the settled foundation, so that the load on the pile foundation can be dispersed to the foundation through the entire support plate, avoiding stress concentration due to the reduction of the contact surface between the support plate and the foundation, and further improving the long-term stability and reinforcement effect of the reinforcement structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional diagram of the reinforcement structure of the present invention; Figure 2 is a cross-sectional perspective view of the reinforcement structure of the present invention; Figure 3 The present invention Figure 1 A partial enlarged view of middle A; Figure 4 It is a cross-sectional view of the structure between the arch frame and the support plate of the present invention.

[0019] In the figure: 1. Fixed cylinder; 11. Slide groove; 12. Connecting block; 13. Spring 1; 14. Sliding block; 15. Cylinder; 16. Connecting rod; 17. Annular groove; 18. Threaded hole 1; 19. Bolt 1; 2. Reinforcement plate; 3. Pressing ring; 31. Fixed block 1; 32. Threaded hole 2; 4. Arch frame; 41. Threaded hole 3; 42. Bolt 2; 5. Support plate; 51. Round hole; 52. Threaded hole 4; 6. Adjustment mechanism; 61. Spherical groove 1; 62. Bump; 63. Sliding cylinder; 64. Sphere 1; 65. Sliding rod; 66. Limiting block; 67. Wedge block; 68. Sliding block; 69. Threaded rod; 610. Fixed block 2; 611. Sliding column; 612. Fixed sleeve; 613. Spring 2; 614. Spherical groove 2; 615. Sphere 2. DETAILED DESCRIPTION

[0020] The following further describes the embodiments of the present invention in detail in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] As shown Figure 1-Figure 4 in the figure, the present invention provides a building pile foundation reinforcement structure for soft soil foundation, including: a fixed cylinder 1, in which a plurality of reinforcement plates 2 are slidably installed. The plurality of reinforcement plates 2 are arc-shaped and evenly distributed in the fixed cylinder 1. Both ends of the reinforcement plate 2 are frustum-shaped. Pressing rings 3 are threadedly connected to the inner wall of the fixed cylinder 1 at both ends of the reinforcement plate 2. One end of the pressing ring 3 close to the reinforcement plate 2 is frustum-shaped and matches both ends of the reinforcement plate 2. Two arched frames 4 are fixedly connected to the outer wall of the fixed cylinder 1. A support plate 5 is installed at the bottom of the arched frame 4. An adjusting mechanism 6 is arranged between the arched frame 4 and the support plate 5.

[0022] As an embodiment of the present invention, a plurality of sliding grooves 11 are opened on the inner wall of the fixed cylinder 1, and the number of the sliding grooves 11 is the same as that of the reinforcement plates 2. A connecting block 12 is slidably connected in the sliding groove 11. One end of the connecting block 12 is installed with a first spring 13 between it and the sliding groove 11, and the other end is fixedly connected to the reinforcement plate 2.

[0023] As an embodiment of the present invention, a slider 14 is slidably connected between the two arched frames 4 on the outer wall of the fixed cylinder 1. A cylinder 15 is fixedly connected to the slider 14. Connecting rods 16 are connected to both ends of the cylinder 15. One end of the connecting rod 16 is fixedly connected to the end of the pressing ring 3 away from the reinforcement plate 2, and the other end extends into the cylinder 15.

[0024] As an embodiment of the present invention, annular grooves 17 are opened on both end faces of the fixed cylinder 1. A plurality of first fixing blocks 31 are arranged at the end of the pressing ring 3 away from the reinforcement plate 2. The cross section of the first fixing block 31 is U-shaped. One end of the first fixing block 31 is fixedly connected to the pressing ring 3, and the other end is located in the annular groove 17. Threaded holes 18 and threaded holes 32 are respectively provided at the annular groove 17 of the fixed cylinder 1 and the first fixing block 31, and a first bolt 19 is installed through the threaded hole 18 and the threaded hole 32.

[0025] As an embodiment of the present invention, a circular hole 51 is opened at the center of the support plate 5.

[0026] As an embodiment of the present invention, the adjustment mechanism 6 includes a spherical groove 1 61, a spherical groove 2 614, a convex block 62 and a slide cylinder 63, the spherical groove 1 61 is opened at the bottom of both ends of the arch frame 4, and a ball 1 64 is rollingly connected in the spherical groove 1 61, the spherical groove 2 614 is opened at the top of the support plate 5, and a ball 2 615 is rollingly connected through the spherical groove 2 614, the convex block 62 is fixedly connected to both ends of the arch frame 4, the slide cylinder 63 is fixedly connected to the ball 2 615, a sliding rod 65 is slidably connected in the slide cylinder 63, one end of the sliding rod 65 is fixedly connected to the ball 1 64, a limiting block 66 is slidably connected to the sliding rod 65, the opposite sides of the convex block 62 and the limiting block 66 are both inclined surfaces, and a wedge block 67 is arranged between the convex block 62 and the limiting block 66, and the wedge block 67 matches the inclined surfaces of the convex block 62 and the limiting block 66.

[0027] As an embodiment of the present invention, the adjustment mechanism 6 further includes a sliding block 68 slidably connected to the support plate 5 , and a threaded rod 69 is rotatably connected to the sliding block 68 . The threaded rod 69 passes through the sliding block 68 and is threadedly connected to the wedge block 67 .

[0028] As an embodiment of the present invention, the adjustment mechanism 6 also includes a second fixed block 610 fixedly connected to the support plate 5, a sliding column 611 is slidably connected inside the second fixed block 610, the sliding column 611 passes through the second fixed block 610, and one end is fixedly connected to a fixed sleeve 612, the fixed sleeve 612 is sleeved on the sliding block 68, and a second spring 613 is installed between the fixed sleeve 612 and the second fixed block 610 on the outside of the sliding column 611.

[0029] As an embodiment of the present invention, the arch frame 4 and the support plate 5 are provided with threaded holes 3 41 and threaded holes 4 52 , and bolts 2 42 are installed through the threaded holes 3 41 and threaded holes 4 52 .

[0030] Working principle: like Figure 1-Figure 2 As shown, when the reinforcement structure is used, first, the reinforcement structure is put on the pile foundation from top to bottom, so that the pile foundation passes through the circular hole 51 of the support plate 5 and the multiple reinforcement plates 2 in the fixed tube 1, and the support plate 5 is fitted with the foundation, and then the cylinder 15 and the slider 14 are rotated to drive the connecting rods 16 at both ends of the cylinder 15 to rotate synchronously. The rotation of the connecting rod 16 drives the pressure ring 3 to rotate in the fixed tube 1. Because the pressure ring 3 is threadedly connected to the fixed tube 1, as the pressure ring 3 rotates, the pressure ring 3 gradually approaches the reinforcement plate 2, and pushes the conical end of the reinforcement plate 2 through the conical end of the pressure ring 3, so that the multiple reinforcement plates 2 slide toward the center of the fixed tube 1, thereby clamping and surrounding the pile foundation.

[0031] It should be noted that the reinforcement plate 2 is connected by the connecting block 12 so that it can slide in the fixed tube 1 toward the center of the fixed tube 1, and the connecting block 12 and the fixed tube 1 are connected by a spring 13. When the reinforcement structure needs to be disassembled, the connecting block 12 and the reinforcement plate 2 are reset by the elastic force of the spring 13, which is convenient for next use.

[0032] Compression rings 3 are provided at both ends of the reinforcement plate 2 to push the reinforcement plate 2, thereby ensuring that the reinforcement plate 2 fits tightly against the pile foundation, and at the same time improving the supporting effect of the reinforcement plate 2 on the pile foundation, and better protecting the pile foundation when the pile foundation is subjected to impact and vibration, and preventing the pile foundation from cracking, bending and other damages.

[0033] The radius of the reinforcement plate 2 is the same as that of the pile foundation. When multiple reinforcement plates 2 are completely fitted with the pile foundation, the threaded hole 18 on the fixing tube 1 and the threaded hole 32 on the fixing block 31 overlap. At this time, a bolt 19 is installed on the threaded hole 18 and the threaded hole 32, and the fixing block 31 is fixed in the annular groove 17 of the fixing tube 1 by the bolt 19, so as to further fix the pressure ring 3, avoid impact and vibration that may cause the connection between the pressure ring 3 and the fixing tube 1 to loosen, and further improve the support effect of the reinforcement plate 2.

[0034] The pile foundation is reinforced by the reinforcement plate 2. When the pile foundation is subjected to vibration and impact, the force exerted on the pile foundation is transmitted to the pressure ring 3 and the fixing tube 1 through the reinforcement plate 2, and then transmitted to the arch frame 4. The load exerted on the pile foundation is dispersed to the support plate 5 through the arch frame 4, and then dispersed to the foundation through the support plate 5, thereby reducing the pressure exerted on the foundation by the reinforcement structure, and avoiding further damage to the soft soil foundation caused by the reinforcement structure in an environment such as rain.

[0035] Before the installation of this reinforcement structure, the second bolt 42 is installed on the arch frame 4 through the threaded hole three 41 and the threaded hole four 52, so as to realize the connection between the fixing tube 1 and the structure on the arch frame 4 and the support plate 5, so as to facilitate the installation of the reinforcement structure on the pile foundation. After the reinforcement plate 2 is fixed to the pile foundation, the second bolt 42 is removed from the threaded hole four 52 on the support plate 5, so that the support plate 5 and the arch frame 4 are no longer fixed, so as to facilitate the adjustment of the support plate 5; then the threaded rod 69 is rotated. Since the threaded rod 69 is rotatably connected with the sliding block 68 and is threadedly connected with the wedge block 67, the rotation of the threaded rod 69 drives the wedge block 67 to move between the protrusion 62 and the limit block 66, so that the distance between the protrusion 62 and the limit block 66 is increased. Because the protrusion 62 and the arch frame 4 are already fixed on the pile foundation, the limit block 66 can be pushed downward by pushing the wedge block 67 to move, so that the support plate 5 is closely fitted with the foundation, and the load on the pile foundation is dispersed on the foundation to the maximum extent, thereby improving the reinforcement effect.

[0036] When the pile foundation is subjected to a tilting force, the load is transmitted to the support plate 5 through the arch frame 4, the protrusion 62, the wedge block 67, the limit block 66, the slide tube 63, etc., and these structures support the arch frame 4, that is, support the pile foundation; and the large-area support plate 5 can further disperse the pressure transmitted from the pile foundation to the foundation.

[0037] like Figure 2-Figure 4 As shown, when the soft soil base is sunken due to factors such as rain and impact, there is a gap between the bottom of a part of the support plate 5 and the foundation, which reduces the supporting force of the foundation with the gap on the support plate 5, and it is difficult for the foundation to maintain stability on the support plate 5 through the wedge block 67. At this time, the spring 2 613 is extended and pushes the sliding block 68 to move through the fixing sleeve 612. Because the wedge block 67 is fixed on the sliding block 68 by the threaded rod 69, the sliding block 68 pushes the wedge block 67 to move further between the protrusion 62 and the limit block 66, thereby pushing the limit block 66 to move downward, pushing the slide 63 and the support plate 5 to move downward, so that the support plate 5 is fully in contact with the sunken foundation, so that the wedge block 67 can be stable with the supporting force of the foundation on the support plate 5, and then the load on the pile foundation can be dispersed to the foundation through the entire support plate 5, avoiding stress concentration due to the reduction of the contact area between the support plate 5 and the foundation, and further improving the long-term stability and reinforcement effect of the reinforcement structure.

[0038] It should be noted that when the foundation is sunken, the support plate 5 is pressed down to make the support plate 5 fully contact with the foundation, so that the support plate 5 is tilted and the distance between the support plate 5 and the arch frame 4 is increased. During this period, the slide rod 65 slides out of the slide cylinder 63, and the slide rod 65 and the slide cylinder 63 are rotated by a certain angle through the ball 1 64 and the ball 2 615, so that the support plate 5 remains connected with the arch frame 4 when it is tilted, and the load is transmitted through the wedge block 67 to ensure the stability of load transmission.

[0039] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A building pile foundation reinforcement structure for soft soil foundation, comprising: Fixed cylinder (1), characterized in that: a plurality of reinforcing plates (2) are slidably installed in the fixed cylinder (1), the plurality of reinforcing plates (2) are arc-shaped and evenly distributed in the fixed cylinder (1), both ends of the reinforcing plate (2) are frustum-shaped, and pressure rings (3) are threadedly connected to both ends of the reinforcing plate (2) on the inner wall of the fixed cylinder (1). One end of the pressure ring (3) close to the reinforcing plate (2) is frustum-shaped and matches both ends of the reinforcing plate (2). Two arched frames (4) are fixedly connected to the outer wall of the fixed cylinder (1), a support plate (5) is installed at the bottom of the arched frame (4), and an adjusting mechanism (6) is arranged between the arched frame (4) and the support plate (5).

2. The building pile foundation reinforcement structure for soft soil foundation according to claim 1, characterized in that: A plurality of sliding grooves (11) are formed on the inner wall of the fixed cylinder (1), and the number of the sliding grooves (11) is the same as that of the reinforcing plates (2). A connecting block (12) is slidably connected in the sliding groove (11). One end of the connecting block (12) and the sliding groove (11) are provided with a first spring (13), and the other end is fixedly connected to the reinforcing plate (2).

3. The building pile foundation reinforcement structure for soft soil foundation according to claim 1, characterized in that: A slider (14) is slidably connected between the two arched frames (4) on the outer wall of the fixed cylinder (1). A cylinder (15) is fixedly connected to the slider (14). Connecting rods (16) are connected to both ends of the cylinder (15). One end of the connecting rod (16) is fixedly connected to the end of the pressure ring (3) away from the reinforcing plate (2), and the other end extends into the cylinder (15).

4. The building pile foundation reinforcement structure for soft soil foundation according to claim 1, characterized in that: Circular grooves (17) are formed on both end faces of the fixed cylinder (1). A plurality of first fixing blocks (31) are arranged at the end of the pressure ring (3) away from the reinforcing plate (2). The cross section of the first fixing block (31) is U-shaped. One end of the first fixing block (31) is fixedly connected to the pressure ring (3), and the other end is located in the circular groove (17). Threaded holes one (18) and threaded holes two (32) are respectively provided at the circular groove (17) of the fixed cylinder (1) and the first fixing block (31), and a first bolt (19) is installed through the threaded hole one (18) and the threaded hole two (32).

5. The building pile foundation reinforcement structure for soft soil foundation according to claim 1, characterized in that: A circular hole (51) is formed in the center of the support plate (5).

6. The building pile foundation reinforcement structure for soft soil foundation according to claim 1, characterized in that: The adjustment mechanism (6) comprises a spherical groove (61), a spherical groove (614), a protrusion (62) and a slide cylinder (63); the spherical groove (61) is provided at the bottom of both ends of the arch frame (4), and a spherical body (64) is rollingly connected in the spherical groove (61); the spherical groove (614) is provided at the top of the support plate (5), and a spherical body (615) is rollingly connected through the spherical groove (614); the protrusion (62) is fixedly connected to both ends of the arch frame (4), and the slide cylinder (63) is fixedly connected to the second sphere (615), a slide rod (65) is slidably connected inside the slide cylinder (63), one end of the slide rod (65) is fixedly connected to the first sphere (64), a limit block (66) is slidably connected to the slide rod (65), the opposite sides of the protrusion (62) and the limit block (66) are both inclined surfaces, and a wedge block (67) is provided between the protrusion (62) and the limit block (66), and the wedge block (67) matches the inclined surfaces of the protrusion (62) and the limit block (66).

7. The building pile foundation reinforcement structure for soft soil foundation according to claim 6, characterized in that: The adjustment mechanism (6) further comprises a sliding block (68) slidably connected to the support plate (5), a threaded rod (69) being rotatably connected to the sliding block (68), and the threaded rod (69) passing through the sliding block (68) and being threadedly connected to the wedge block (67).

8. The building pile foundation reinforcement structure for soft soil foundation according to claim 7, characterized in that: The adjustment mechanism (6) further comprises a second fixed block (610) fixedly connected to the support plate (5), a sliding column (611) being slidably connected inside the second fixed block (610), the sliding column (611) passing through the second fixed block (610) and having a fixed sleeve (612) fixedly connected at one end, the fixed sleeve (612) being sleeved on the sliding block (68), and a second spring (613) being installed between the fixed sleeve (612) and the second fixed block (610) on the outer side of the sliding column (611).

9. The building pile foundation reinforcement structure for soft soil foundation according to claim 1, characterized in that: The arch frame (4) and the support plate (5) are provided with a threaded hole three (41) and a threaded hole four (52), and a bolt two (42) is installed through the threaded hole three (41) and the threaded hole four (52).

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