Pile foundation reinforcing structure for reinforcing road bridge

Abstract

The invention relates to the technical field of pile foundation reinforcement, and discloses a pile foundation reinforcement structure for reinforcing roads and bridges, which comprises a hydraulic telescopic support mechanism and four threaded telescopic support mechanisms. According to the pile foundation reinforcing structure for reinforcing the road bridge, the longitudinal supporting effect between the bridge and the bridge pier is achieved through the hydraulic supporting principle, meanwhile, the longitudinal supporting capacity of the threaded structure is combined, longitudinal supporting is achieved on the bridge in a combined mode, and the longitudinal meshing force of the threaded structure can achieve the supporting function on the bridge through the combination; the pressure of the liquid not only can achieve auxiliary supporting of the threaded structure, but also can achieve auxiliary supporting of the bridge, so that the auxiliary supporting of the threaded structure and the auxiliary supporting of the bridge supplement each other, and a more stable supporting effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of pile foundation reinforcement, in particular to a pile foundation reinforcement structure for reinforcing roads and bridges. Background Art

[0002] A deep foundation consisting of a pile and a pile cap connected to the top of the pile (referred to as the cap) or a single pile foundation connected by a column and a pile foundation is referred to as a pile foundation. If the pile body is completely buried in the soil and the bottom of the cap is in contact with the soil, it is called a low cap pile foundation; if the upper part of the pile body is exposed to the ground and the bottom of the cap is above the ground, it is called a high cap pile foundation. At present, pile foundations are needed for auxiliary construction during the construction of roads and bridges. Pile foundations need to be reinforced with reinforcement structures during use. However, for pile foundations of different types and heights, the pile foundation reinforcement structure is inconvenient to adjust when in use.

[0003] To this end, the Chinese patent with the publication number "CN217053340U" announced "a pile foundation reinforcement structure for roads and bridges", whose main structure includes a fixed seat, a plurality of fixing holes are opened on the outer surface of the fixed seat, a plurality of limit rods are fixedly connected at the four corners of the lower surface of the fixed seat, a receiving frame is rotatably connected to the upper surface of the fixed seat, a support frame is rotatably connected to the side of the upper surface of the fixed seat away from the receiving frame, and a reinforcement ring is rotatably connected to the upper surface of the support frame. The pile foundation reinforcement structure for roads and bridges is provided with a fixed seat, so that The support frame can be rotatably connected to the upper surface of the fixed seat for support, and the receiving frame can be fixed on the upper surface of the fixed seat for auxiliary support, so that when the fixed seat is reinforcing the pile foundation, it can first be quickly limited and fixed by the limit rod, and then firmly fixed by the fixing hole. At the same time, the support frame and the reinforcement ring can be rotated to adjust the height and angle of the support, and finally the support frame can be raised and lowered by the adjustment frame and the receiving frame to fix the support, so as to form a triangular support structure, and then a plurality of fixed seats are coordinated to quickly reinforce the pile foundation.

[0004] However, when the above-mentioned pile foundation reinforcement structure for road and bridge is actually working, since it utilizes the principle of triangular support, the triangular support also generates force on the connection between the two side panels, and the pressure of the bridge on the equipment will act on the hinge of the triangular structure to the greatest extent. Due to the inclination of force, the pressure at the hinge will be doubled, and the structure of the pile foundation reinforcement structure for road and bridge at the triangular connection hinge is not stable. Therefore, there is also the phenomenon of unstable support effect. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a pile foundation reinforcement structure for reinforcing road bridges, which utilizes the hydraulic support principle to achieve a longitudinal support effect between the bridge and the pier. At the same time, combined with the longitudinal support capacity of the threaded structure, the longitudinal support of the bridge is achieved in a combined manner. The combination enables the longitudinal bite force of the threaded structure to achieve the supporting function of the bridge, and the pressure of the liquid can achieve both auxiliary support for the threaded structure and auxiliary support for the bridge, thereby complementing each other, achieving a more stable support effect, and solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pile foundation reinforcement structure for reinforcing roads and bridges, comprising a lower mounting base plate located at the bottom, an upper mounting base plate located at the top, positioning pin holes arranged in the lower mounting base plate and the upper mounting base plate, and four fixed connecting plate structures arranged on the corresponding end surfaces of the lower mounting base plate and the upper mounting base plate, and also comprising a hydraulic telescopic support mechanism, wherein a longitudinal hollow shell having a hollow structure inside and fixedly mounted between the lower mounting base plate and the upper mounting base plate is arranged inside, and a piston body which moves upward after being subjected to liquid pressure and drives the upper mounting base plate to move upward is provided. and a liquid reserved cavity located below the piston body and capable of pre-storing the flowing liquid and preventing the piston body from continuing to move downward; and four threaded telescopic support mechanisms, inside which are arranged a No. 1 externally threaded rod and a No. 2 externally threaded rod connected to the end of the fixed connecting plate structure, a longitudinal threaded sleeve threadedly connected to the No. 1 externally threaded rod and the No. 2 externally threaded rod and capable of changing the distance between the No. 1 externally threaded rod and the No. 2 externally threaded rod when rotating, and a polygonal limiting rod inserted at the axis of the No. 1 externally threaded rod and the No. 2 externally threaded rod and capable of preventing the No. 1 externally threaded rod and the No. 2 externally threaded rod from rotating relative to each other.

[0007] Preferably, the hydraulic telescopic support mechanism comprises a longitudinal hollow shell, the bottom end of the longitudinal hollow shell is provided with a lower raised column structure which is an integral structure therewith, the bottom end of the lower raised column structure is provided with a bottom fixed plate which is an integral structure therewith and fixedly mounted at the center of the upper surface of the lower mounting base plate, the interior of the longitudinal hollow shell is provided with a longitudinal component active cavity, the interior of the lower raised column structure is provided with a liquid reserved cavity which is connected to the bottom end of the longitudinal component active cavity from the top, one side of the lower raised column structure is provided with a liquid injection channel which is connected to the external space and one side of the liquid reserved cavity and has a liquid valve installed therein, and the other side of the lower raised column structure is provided with a liquid valve which is connected to the external space and one side of the liquid reserved cavity The top of the longitudinal hollow shell is provided with a rod body through hole connecting the external space and the top of the longitudinal component active cavity; the longitudinal hollow shell is provided with a piston body capable of axially moving along the longitudinal component active cavity inside the longitudinal component active cavity; a longitudinal support rod penetrating the rod body through hole is fixedly installed on the upper surface of the piston body; a No. 1 coil spring in a compressed state is sleeved on the outer periphery of the rod body inside the longitudinal component active cavity of the longitudinal support rod; a top fixing plate is fixedly installed on the top of the longitudinal support rod, and the top fixing plate is fixedly installed at the center of the lower surface of the upper mounting substrate.

[0008] Preferably, the structural radius of the liquid reserved cavity is smaller than the structural radius of the longitudinal component active cavity, the structural radius of the longitudinal component active cavity matches the structural radius of the piston body, and the bottom end of the No. 1 coil spring is fixedly mounted on the upper surface of the piston body, and the top end is fixedly mounted on the top end of the longitudinal component active cavity, and the initial length of the No. 1 coil spring is greater than the depth of the longitudinal component active cavity.

[0009] Preferably, the structural shape of the rod body perforated cross section is consistent with the structural shape of the longitudinal support rod cross section, both are polygonal structures, and the structural dimensions of the rod body perforated cross section match the structural dimensions of the longitudinal support rod cross section.

[0010] Preferably, the threaded telescopic support mechanism comprises a longitudinal threaded sleeve, a No. 1 externally threaded rod and a No. 2 externally threaded rod, one end of the longitudinal threaded sleeve is provided with a No. 1 internally threaded cavity with an inner concave structure, and the other end of the longitudinal threaded sleeve is provided with a No. 2 internally threaded cavity with an inner concave structure, the rod body of the No. 1 externally threaded rod is installed inside the No. 1 internally threaded cavity through the No. 1 threaded structure, and the rod body of the No. 2 externally threaded rod is installed inside the No. 2 internally threaded cavity through the No. 2 threaded structure, the No. 1 externally threaded rod and the No. 2 externally threaded rod are provided with a polygonal limiting cavity with an inner concave structure at opposite ends, a polygonal limiting rod inserted into the polygonal limiting cavity is fixedly installed at the center of the longitudinal threaded sleeve, one end of the No. 1 externally threaded rod is provided with a No. 1 connecting plate which is integrally connected with it and fixedly connected to a fixed connecting plate structure located below, one end of the No. 2 externally threaded rod is provided with a No. 2 connecting plate which is integrally connected with it and fixedly connected to a fixed connecting plate structure located above, and the outer circumferential surface of the longitudinal threaded sleeve is provided with a polygonal knob structure which is integrally connected with it and easy to rotate.

[0011] Preferably, the structural shape of the polygonal limit cavity cross section is consistent with the structural shape of the polygonal limit rod cross section, both are polygonal structures, and the structural dimensions of the polygonal limit cavity cross section match the structural dimensions of the polygonal limit rod cross section.

[0012] Preferably, the No. 1 thread structure includes an internal thread structure arranged inside the No. 1 internal thread cavity and an external thread structure arranged on the No. 1 external thread rod body, and the No. 2 thread structure includes an internal thread structure arranged inside the No. 2 internal thread cavity and an external thread structure arranged on the No. 2 external thread rod body, and the spiral direction of the No. 1 thread structure is opposite to the spiral direction of the No. 2 thread structure.

[0013] Preferably, it also includes a liquid pressure control mechanism, which is internally provided with a horizontal hollow shell fixedly installed on one side of the lower raised column structure and having a hollow structure inside, a valve plate placed inside the horizontal hollow shell and moving to one side after being subjected to the liquid pressure from the lower raised column structure, thereby allowing the liquid to be discharged outward, and a No. 2 coil spring placed inside the horizontal hollow shell and having an elastic damping effect on the valve plate.

[0014] Preferably, the liquid pressure control mechanism comprises a horizontal hollow shell, one end face of the horizontal hollow shell is provided with a middle connecting pipe of an integral structure therewith, one end of the middle connecting pipe is provided with a fixing sleeve fixedly mounted on the outer periphery of the circumferential surface of the lower raised column structure, one side of the fixing sleeve is provided with a No. 2 liquid flow hole for housing the liquid injection channel, a horizontal component active cavity is provided inside the horizontal hollow shell, a liquid discharge channel connecting the external space and one end of the horizontal component active cavity is provided at the other end of the horizontal hollow shell, a No. 3 liquid flow hole connecting the other end of the horizontal component active cavity and the No. 1 liquid flow hole is provided inside the middle connecting pipe, a valve plate capable of axial movement along the horizontal component active cavity is arranged inside the horizontal hollow shell located in the horizontal component active cavity, a plurality of liquid flow grooves are provided on the circumferential surface of the valve plate, an annular embedding groove of an inner concave structure is provided on the end face of the valve plate facing the No. 3 liquid flow hole, an annular sealing ring is installed in the annular embedding groove, and a No. 2 coil spring in a compressed state and capable of controlling the liquid pressure when the liquid is discharged outward is installed at the other end of the valve plate.

[0015] Preferably, the thickness of the annular sealing ring is greater than the depth of the annular embedded groove, the structural radius of the inner ring of the annular sealing ring is greater than the structural radius of the No. 3 liquid flow hole, and the structural radius of the outer ring of the annular sealing ring is smaller than the distance between the liquid flow groove and the axial centerline of the valve plate.

[0016] Compared with the prior art, the present invention provides a pile foundation reinforcement structure for reinforcing roads and bridges, which has the following beneficial effects: The hydraulic support principle is used to achieve the longitudinal support effect between the bridge and the pier. At the same time, combined with the longitudinal support capacity of the threaded structure, the longitudinal support of the bridge is achieved in a combined manner. This combination enables the longitudinal bite force of the threaded structure to achieve the support function of the bridge, and the pressure of the liquid can achieve auxiliary support for both the threaded structure and the bridge, thus complementing each other and achieving a more stable support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 is a three-dimensional cross-sectional view of the present invention; Figure 3 It is a three-dimensional diagram of the hydraulic telescopic support mechanism of the present invention; Figure 4 It is a three-dimensional cross-sectional view of the hydraulic telescopic support mechanism of the present invention; Figure 5 It is a three-dimensional diagram of the threaded telescopic support mechanism of the present invention; Figure 6It is a three-dimensional cross-sectional view of the threaded telescopic support mechanism of the present invention; Figure 7 is a three-dimensional diagram of the liquid pressure control mechanism of the present invention; Figure 8 It is a three-dimensional cross-sectional view of the liquid pressure control mechanism in the present invention.

[0018] Among them: 1. Lower mounting base plate; 2. Upper mounting base plate; 3. Positioning pin hole; 4. Fixed connecting plate structure; 5. Hydraulic telescopic support mechanism; 51. Longitudinal hollow shell; 52. Lower raised column structure; 53. Bottom fixing plate; 54. Longitudinal component movable cavity; 55. Rod body perforation; 56. Liquid reserved cavity; 57. Liquid injection channel; 58. No. 1 liquid flow hole; 59. Piston body; 510. Longitudinal support rod; 511. No. 1 spiral spring; 512. Top fixing plate; 6. Threaded telescopic support mechanism; 61. Longitudinal threaded sleeve; 62. No. 1 internal thread cavity; 63. No. 2 internal thread cavity; 64. No. 1 spiral 65. No. 2 thread structure; 66. No. 1 external thread rod; 67. No. 2 external thread rod; 68. No. 1 connecting plate; 69. No. 2 connecting plate; 610. Polygonal limit cavity; 611. Polygonal limit rod; 612. Polygonal knob structure; 7. Liquid pressure control mechanism; 71. Horizontal hollow shell; 72. Middle connecting pipe; 73. Fixed sleeve; 74. No. 2 liquid flow hole; 75. Horizontal component active cavity; 76. No. 3 liquid flow hole; 77. Liquid discharge channel; 78. Valve plate; 79. Liquid flow groove; 710. Annular embedded groove; 711. Annular sealing ring; 712. No. 2 spiral spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1 and Figure 2 A pile foundation reinforcement structure for reinforcing a road bridge comprises a lower mounting base plate 1 located at the bottom, an upper mounting base plate 2 located at the top, positioning pin holes 3 arranged in the lower mounting base plate 1 and the upper mounting base plate 2, and four fixed connecting plate structures 4 arranged on the corresponding end surfaces of the lower mounting base plate 1 and the upper mounting base plate 2. The lower mounting base plate 1 is fixedly mounted on the top of the pier by means of positioning pins inserted into the positioning pin holes 3, and the upper mounting base plate 2 is fixedly mounted on the bottom of the bridge by means of positioning pins inserted into the positioning pin holes 3, thereby realizing a fixed connection between the bridge and the pier.

[0021] To achieve the function of hydraulic telescopic height support, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , it is necessary to set up a hydraulic telescopic support mechanism 5, which is provided with a longitudinal hollow shell 51 fixedly installed between the lower mounting base plate 1 and the upper mounting base plate 2 and having a hollow structure inside, a piston body 59 that moves upward after being subjected to liquid pressure and drives the upper mounting base plate 2 to move upward, and a liquid reserved cavity 56 located below the piston body 59 and capable of pre-storing the flowing liquid and preventing the piston body 59 from continuing to move downward. A hydraulic pump is used, and the liquid discharge port of the hydraulic pump and the liquid injection channel 57 are connected through a pipeline. The hydraulic pump is turned on to allow the liquid to continuously enter the liquid reserved cavity 56. The liquid will exert an upward force on the piston body 59, thereby causing the piston body 59 to drive the longitudinal support rod 510 to move upward until the upper surface of the upper mounting base plate 2 contacts the bottom of the bridge, thereby realizing the function of hydraulic telescopic height support, and the pressure of the liquid will work together with the threaded structure to provide necessary support between the lower mounting base plate 1 and the upper mounting base plate 2.

[0022] For the specific structure of the hydraulic telescopic support mechanism 5, please refer to Figure 3 and Figure 4, comprising a longitudinal hollow shell 51, wherein the bottom end of the longitudinal hollow shell 51 is provided with a lower protruding column structure 52 which is an integral structure therewith, and the bottom end of the lower protruding column structure 52 is provided with a bottom fixing plate 53 which is an integral structure therewith and fixedly mounted at the center of the upper surface of the lower mounting base plate 1, and the interior of the longitudinal hollow shell 51 is provided with a longitudinal component active cavity 54, and the interior of the lower protruding column structure 52 is provided with a liquid reserved cavity 56 which is connected to the bottom end of the longitudinal component active cavity 54 at the top, and one side of the lower protruding column structure 52 is provided with a liquid reserved cavity 56 which is connected to the outside The lower raised column structure 52 is provided with a No. 1 liquid flow hole 58 connecting the external space and the other side of the liquid reserved cavity 56, and the top of the longitudinal hollow shell 51 is provided with a rod body through hole 55 connecting the external space and the top of the longitudinal component active cavity 54, and the longitudinal hollow shell 51 is provided with a piston body 59 capable of axial movement along the longitudinal component active cavity 54 inside the longitudinal component active cavity 54, and the upper end of the piston body 59 is provided with a piston body 59 capable of axial movement along the longitudinal component active cavity 54. A longitudinal support rod 510 penetrating a rod body through-hole 55 is fixedly mounted on the surface, and a No. 1 coil spring 511 in a compressed state is sleeved on the outer periphery of the rod body located inside the longitudinal component active cavity 54 of the longitudinal support rod 510, and a top fixing plate 512 is fixedly mounted on the top end of the longitudinal support rod 510, and the top fixing plate 512 is fixedly mounted at the center of the lower surface of the upper mounting substrate 2, the structural radius of the liquid reserved cavity 56 is smaller than the structural radius of the longitudinal component active cavity 54, the structural radius of the longitudinal component active cavity 54 matches the structural radius of the piston body 59, and the bottom end of the No. 1 coil spring 511 is fixedly mounted on the upper surface of the piston body 59, and the top end is fixedly mounted on the top end of the longitudinal component active cavity 54, and the initial length of the No. 1 coil spring 511 is greater than the depth of the longitudinal component active cavity 54, the structural shape of the cross section of the rod body through-hole 55 is consistent with the structural shape of the cross section of the longitudinal support rod 510, both are polygonal structures, and the structural dimensions of the cross section of the rod body through-hole 55 match the structural dimensions of the cross section of the longitudinal support rod 510.

[0023] To achieve a threaded support effect, see Figure 1 , Figure 2 , Figure 5 and Figure 6, it is necessary to set up four threaded telescopic support mechanisms 6, which are provided with a No. 1 external thread rod 66 and a No. 2 external thread rod 67 connected to the end of the fixed connecting plate structure 4, a longitudinal threaded sleeve 61 threadedly connected to the No. 1 external thread rod 66 and the No. 2 external thread rod 67 and capable of changing the distance between the No. 1 external thread rod 66 and the No. 2 external thread rod 67 when rotating, and a polygonal limiter inserted at the axis of the No. 1 external thread rod 66 and the No. 2 external thread rod 67 and capable of preventing the No. 1 external thread rod 66 and the No. 2 external thread rod 67 from rotating relative to each other. The positioning rod 611, first, synchronously rotates each longitudinal threaded sleeve 61. Since the spiral direction of the No. 1 threaded structure 64 is opposite to the spiral direction of the No. 2 threaded structure 65, and during the rotation process, the existence of the polygonal limiting rod 611 prevents the No. 1 external threaded rod 66 and the No. 2 external threaded rod 67 from relative rotation. Therefore, the distance between the No. 1 external threaded rod 66 and the No. 2 external threaded rod 67 will change, thereby realizing the function of adjusting the support height, and the bite force between the threaded structures can act as a height support.

[0024] For the specific structure of the threaded telescopic support mechanism 6, please refer to Figure 5 and Figure 6, including a longitudinal threaded sleeve 61, a No. 1 externally threaded rod 66 and a No. 2 externally threaded rod 67, one end of the longitudinal threaded sleeve 61 is provided with a No. 1 internally threaded cavity 62 with an inner concave structure, and the other end of the longitudinal threaded sleeve 61 is provided with a No. 2 internally threaded cavity 63 with an inner concave structure, the rod body of the No. 1 externally threaded rod 66 is installed in the interior of the No. 1 internally threaded cavity 62 through a No. 1 threaded structure 64, and the rod body of the No. 2 externally threaded rod 67 is installed in the interior of the No. 2 internally threaded cavity 63 through a No. 2 threaded structure 65, the No. 1 externally threaded rod 66 and the No. 2 externally threaded rod 67 are provided with a polygonal limiting cavity 610 with an inner concave structure at the opposite ends, a polygonal limiting rod 611 inserted into the polygonal limiting cavity 610 is fixedly installed in the center of the longitudinal threaded sleeve 61, one end of the No. 1 externally threaded rod 66 is provided with a No. 1 connecting plate 68 which is an integral structure with it and fixedly connected to the fixed connecting plate structure 4 located below, and the No. 2 externally threaded rod 67 A No. 2 connecting plate 69 is provided at one end, which is an integral structure with it and fixedly connected to the fixed connecting plate structure 4 located above. The outer circumferential surface of the longitudinal threaded sleeve 61 is provided with a polygonal knob structure 612, which is an integral structure with it and is easy to rotate. The structural shape of the cross section of the polygonal limiting cavity 610 is consistent with the structural shape of the cross section of the polygonal limiting rod 611, both of which are polygonal structures, and the structural dimensions of the cross section of the polygonal limiting cavity 610 match the structural dimensions of the cross section of the polygonal limiting rod 611. The No. 1 threaded structure 64 includes an internal threaded structure arranged inside the No. 1 internal threaded cavity 62 and an external threaded structure arranged on the rod body of the No. 1 external threaded rod 66. The No. 2 threaded structure 65 includes an internal threaded structure arranged inside the No. 2 internal threaded cavity 63 and an external threaded structure arranged on the rod body of the No. 2 external threaded rod 67, and the spiral direction of the No. 1 threaded structure 64 is opposite to the spiral direction of the No. 2 threaded structure 65.

[0025] In order to prevent the longitudinal hollow shell 51 from exploding due to excessive liquid pressure, please refer to Figure 1 , Figure 2 , Figure 7 and Figure 8, it is necessary to set up a liquid pressure control mechanism 7, which is provided with a horizontal hollow shell 71 fixedly installed on one side of the lower raised column structure 52 and having a hollow structure inside, a valve plate 78 placed inside the horizontal hollow shell 71 and moving to one side after being subjected to the liquid pressure from the lower raised column structure 52, so that the liquid can be discharged outwardly, and a No. 2 coil spring 712 placed inside the horizontal hollow shell 71 and having an elastic damping effect on the valve plate 78. After the liquid is injected into the longitudinal hollow shell 51, a force is exerted on the valve plate 78. When the liquid pressure is greater than the elastic strength of the No. 2 coil spring 712, the valve plate 78 will move, and the liquid will be discharged outwardly in time along the No. 1 liquid flow hole 58, the No. 3 liquid flow hole 76, the gap near the valve plate 78, the liquid flow groove 79 and the liquid discharge channel 77 in turn, so as to realize the timely pressure relief function of the liquid, thereby preventing the liquid pressure from being injected too large and causing the longitudinal hollow shell 51.

[0026] For the specific structure of the liquid pressure control mechanism 7, please refer to Figure 7 and Figure 8 , comprising a horizontal hollow shell 71, one end face of the horizontal hollow shell 71 is provided with a middle connecting pipe 72 of an integral structure therewith, one end of the middle connecting pipe 72 is provided with a fixing sleeve 73 fixedly mounted on the outer periphery of the circumferential surface of the lower raised column structure 52, one side of the fixing sleeve 73 is provided with a No. 2 liquid flow hole 74 for housing the liquid injection channel 57, a horizontal component active cavity 75 is provided inside the horizontal hollow shell 71, a liquid discharge channel 77 connecting the external space and one end of the horizontal component active cavity 75 is provided at the other end of the horizontal hollow shell 71, a No. 3 liquid flow hole 76 connecting the other end of the horizontal component active cavity 75 and the No. 1 liquid flow hole 58 is provided inside the middle connecting pipe 72, and the horizontal hollow shell 71 is located in the horizontal component active cavity 75. A valve plate 78 capable of axially moving along the movable cavity 75 of the horizontal part is placed inside, and a plurality of liquid flow grooves 79 are arranged on the circumferential surface of the valve plate 78, and an annular embedding groove 710 with an inner concave structure is arranged on one end surface of the valve plate 78 facing the third liquid flow hole 76, and an annular sealing ring 711 is installed in the annular embedding groove 710, and a No. 2 coil spring 712 which is in a compressed state and can control the liquid pressure when the liquid is discharged outward is installed at the other end of the valve plate 78, the thickness of the annular sealing ring 711 is greater than the depth of the annular embedding groove 710, the structural radius of the inner ring of the annular sealing ring 711 is greater than the structural radius of the third liquid flow hole 76, and the structural radius of the outer ring of the annular sealing ring 711 is smaller than the distance between the liquid flow groove 79 and the axial center line of the valve plate 78.

[0027] When in use, the longitudinal threaded sleeves 61 are rotated synchronously. Since the spiral direction of the No. 1 threaded structure 64 is opposite to the spiral direction of the No. 2 threaded structure 65, and during the rotation process, the existence of the polygonal limit rod 611 prevents the No. 1 external threaded rod 66 and the No. 2 external threaded rod 67 from rotating relative to each other. Therefore, the distance between the No. 1 external threaded rod 66 and the No. 2 external threaded rod 67 will change until the upper mounting base plate 2 contacts the bottom of the bridge. A hydraulic pump is used to connect the liquid discharge port of the hydraulic pump and the liquid injection channel 57 through a pipeline, and the hydraulic pump is turned on. The liquid continuously enters the reserved liquid cavity 56, and the liquid will exert an upward force on the piston body 59, so that the piston body 59 drives the longitudinal support rod 510 to move upward, and the pressure of the liquid will work together with the threaded structure to provide necessary support between the lower mounting substrate 1 and the upper mounting substrate 2. The lower mounting substrate 1 is fixedly installed on the top of the pier by means of a locating pin inserted into the locating pin hole 3, and the upper mounting substrate 2 is fixedly installed on the bottom of the bridge by means of a locating pin inserted into the locating pin hole 3, thereby achieving a fixed connection between the bridge and the pier and the necessary auxiliary support function.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pile foundation reinforcement structure for reinforcing a road bridge, comprising a lower mounting base plate (1) located at a lower portion, an upper mounting base plate (2) located at an upper portion, positioning pin holes (3) provided in the lower mounting base plate (1) and the upper mounting base plate (2), and four fixed connection plate structures (4) provided on corresponding end surfaces of the lower mounting base plate (1) and the upper mounting base plate (2), characterized in that: Also includes, A hydraulic telescopic support mechanism (5), wherein a longitudinal hollow housing (51) is provided inside the housing and is fixedly mounted between a lower mounting base plate (1) and an upper mounting base plate (2) and has a hollow interior; a piston body (59) that moves upward when subjected to liquid pressure and drives the upper mounting base plate (2) to move upward; and a liquid reserve cavity (56) located below the piston body (59) and capable of pre-storing the flowing liquid and preventing the piston body (59) from continuing to move downward; Four threaded telescopic support mechanisms (6), each of which is provided with a first external threaded rod (66) and a second external threaded rod (67) connected to the ends of the fixed connecting plate structure (4), a longitudinal threaded sleeve (61) threadedly connected to the first external threaded rod (66) and the second external threaded rod (67) and capable of changing the distance between the first external threaded rod (66) and the second external threaded rod (67) when rotating, and a polygonal limiting rod (611) inserted into the axis of the first external threaded rod (66) and the second external threaded rod (67) and capable of preventing the first external threaded rod (66) and the second external threaded rod (67) from rotating relative to each other; It also includes a liquid pressure control mechanism (7), which includes a horizontal hollow shell (71) fixedly mounted on one side of the lower raised column structure (52) and having a hollow structure inside, a valve plate (78) placed inside the horizontal hollow shell (71) and moving to one side after receiving the liquid pressure from the lower raised column structure (52) so that the liquid can be discharged outward, and a No. 2 coil spring (712) placed inside the horizontal hollow shell (71) and having an elastic damping effect on the valve plate (78).

2. A pile foundation reinforcement structure for reinforcing roads and bridges according to claim 1, characterized in that: The hydraulic telescopic support mechanism (5) comprises a longitudinal hollow shell (51), the bottom end of the longitudinal hollow shell (51) is provided with a lower protruding column structure (52) which is an integral structure with the longitudinal hollow shell (51), the bottom end of the lower protruding column structure (52) is provided with a bottom fixing plate (53) which is an integral structure with the longitudinal hollow shell (51) and fixedly mounted at the center of the upper surface of the lower mounting base plate (1), the interior of the longitudinal hollow shell (51) is provided with a longitudinal component active cavity (54), the interior of the lower protruding column structure (52) is provided with a liquid reserved cavity (56) whose top is connected to the bottom end of the longitudinal component active cavity (54), one side of the lower protruding column structure (52) is provided with a liquid injection channel (57) which is connected to the external space and one side of the liquid reserved cavity (56) and has a liquid valve installed therein, and the other side of the lower protruding column structure (52) is provided with a liquid valve which is connected to the external space and the liquid reserved cavity (56). 6) a No. 1 liquid flow hole (58) on the other side, the top end of the longitudinal hollow shell (51) is provided with a rod body through hole (55) connecting the external space and the top end of the longitudinal component active cavity (54), the longitudinal hollow shell (51) is provided with a piston body (59) capable of axial movement along the longitudinal component active cavity (54) inside the longitudinal component active cavity (54), the upper surface of the piston body (59) is fixedly mounted with a longitudinal support rod (510) penetrating the rod body through hole (55), the longitudinal support rod (510) is sleeved with a No. 1 coil spring (511) in a compressed state on the outer periphery of the rod body inside the longitudinal component active cavity (54), the top end of the longitudinal support rod (510) is fixedly mounted with a top fixing plate (512), and the top fixing plate (512) is fixedly mounted at the center of the lower surface of the upper mounting base plate (2).

3. A pile foundation reinforcement structure for reinforcing roads and bridges according to claim 2, characterized in that: The structural radius of the liquid reserved cavity (56) is smaller than the structural radius of the longitudinal component active cavity (54), the structural radius of the longitudinal component active cavity (54) matches the structural radius of the piston body (59), and the bottom end of the No. 1 coil spring (511) is fixedly mounted on the upper surface of the piston body (59), and the top end is fixedly mounted on the top end of the longitudinal component active cavity (54), and the initial length of the No. 1 coil spring (511) is greater than the depth of the longitudinal component active cavity (54).

4. A pile foundation reinforcement structure for reinforcing roads and bridges according to claim 3, characterized in that: The structural shape of the cross section of the rod body through hole (55) is consistent with the structural shape of the cross section of the longitudinal support rod (510), both are polygonal structures, and the structural dimensions of the cross section of the rod body through hole (55) match the structural dimensions of the cross section of the longitudinal support rod (510).

5. A pile foundation reinforcement structure for reinforcing roads and bridges according to claim 4, characterized in that: The threaded telescopic support mechanism (6) comprises a longitudinal threaded sleeve (61), a No. 1 externally threaded rod (66) and a No. 2 externally threaded rod (67); one end of the longitudinal threaded sleeve (61) is provided with a No. 1 internally threaded cavity (62) with an inner concave structure; the other end of the longitudinal threaded sleeve (61) is provided with a No. 2 internally threaded cavity (63) with an inner concave structure; the rod body of the No. 1 externally threaded rod (66) is installed inside the No. 1 internally threaded cavity (62) via a No. 1 threaded structure (64); the rod body of the No. 2 externally threaded rod (67) is installed inside the No. 2 internally threaded cavity (63) via a No. 2 threaded structure (65); the No. 1 externally threaded rod (66) and the No. 2 externally threaded rod (67) are arranged in a manner that ... A polygonal limiting cavity (610) with an inwardly concave structure is provided at the opposite end; a polygonal limiting rod (611) inserted into the polygonal limiting cavity (610) is fixedly installed at the center of the longitudinal threaded sleeve (61); a No. 1 connecting plate (68) which is an integral structure with the No. 1 external threaded rod (66) and is fixedly connected to a fixed connecting plate structure (4) located below is provided at one end; a No. 2 connecting plate (69) which is an integral structure with the No. 1 external threaded rod (67) and is fixedly connected to a fixed connecting plate structure (4) located above is provided at one end; and a polygonal knob structure (612) which is an integral structure with the No. 1 external threaded rod (67) and is easily rotatable is provided on the outer circumferential surface of the longitudinal threaded sleeve (61).

6. A pile foundation reinforcement structure for reinforcing roads and bridges according to claim 5, characterized in that: The structural shape of the cross section of the polygonal limiting cavity (610) is consistent with the structural shape of the cross section of the polygonal limiting rod (611), both of which are polygonal structures, and the structural dimensions of the cross section of the polygonal limiting cavity (610) match the structural dimensions of the cross section of the polygonal limiting rod (611).

7. A pile foundation reinforcement structure for reinforcing roads and bridges according to claim 6, characterized in that: The No. 1 thread structure (64) comprises an internal thread structure arranged inside the No. 1 internal thread cavity (62) and an external thread structure arranged on the rod body of the No. 1 external thread rod (66); the No. 2 thread structure (65) comprises an internal thread structure arranged inside the No. 2 internal thread cavity (63) and an external thread structure arranged on the rod body of the No. 2 external thread rod (67); and the spiral direction of the No. 1 thread structure (64) is opposite to the spiral direction of the No. 2 thread structure (65).

8. A pile foundation reinforcement structure for reinforcing roads and bridges according to claim 7, characterized in that: The liquid pressure control mechanism (7) comprises a horizontal hollow shell (71), one end surface of the horizontal hollow shell (71) is provided with a middle connecting pipe (72) of an integral structure therewith, one end of the middle connecting pipe (72) is provided with a fixing sleeve (73) fixedly mounted on the outer periphery of the circumferential surface of the lower protruding column structure (52), one side of the fixing sleeve (73) is provided with a second liquid flow hole (74) for housing a liquid injection channel (57), the interior of the horizontal hollow shell (71) is provided with a horizontal component active cavity (75), the other end of the horizontal hollow shell (71) is provided with a liquid discharge channel (77) communicating with the external space and one end of the horizontal component active cavity (75), the interior of the middle connecting pipe (72) is provided with A No. 3 liquid flow hole (76) is connected to the other end of the horizontal component movable cavity (75) and the No. 1 liquid flow hole (58); the horizontal hollow shell (71) is provided with a valve plate (78) capable of axial movement along the horizontal component movable cavity (75) inside the horizontal component movable cavity (75); the circumferential surface of the valve plate (78) is provided with a plurality of liquid flow grooves (79); the valve plate (78) is provided with an annular embedded groove (710) with an inner concave structure on one end surface facing the No. 3 liquid flow hole (76); an annular sealing ring (711) is installed in the annular embedded groove (710); and the other end of the valve plate (78) is provided with a No. 2 coil spring (712) which is in a compressed state and can control the liquid pressure when the liquid is discharged outward.

9. A pile foundation reinforcement structure for reinforcing roads and bridges according to claim 8, characterized in that: The thickness of the annular sealing ring (711) is greater than the depth of the annular embedding groove (710), the structural radius of the inner ring of the annular sealing ring (711) is greater than the structural radius of the third liquid flow hole (76), and the structural radius of the outer ring of the annular sealing ring (711) is less than the distance between the axial center line of the liquid flow groove (79) and the valve plate (78).

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