Construction method of trestle supporting pile connecting system

Abstract

The invention relates to the technical field of bridge construction, in particular to a construction method of a trestle supporting pile connecting system.The supporting pile connecting system comprises a plurality of steel pipe pile assemblies which are vertically arranged at intervals and used for supporting connecting beams, and each steel pipe pile assembly comprises a first steel pipe pile, a second steel pipe pile and a third steel pipe pile which are adjacent in sequence; supporting inclined rod assemblies used for keeping stress balance are arranged between the first steel pipe piles and the second steel pipe piles as well as between the second steel pipe piles and the third steel pipe piles. The construction method comprises the steps that S1, the steel pipe pile assemblies are assembled; s2, steel pipe piles are installed; s3, a connecting beam is to be installed; the position, on the second steel pipe pile, of the movable sleeve is adjusted to be above the mud surface, so that the hinged stress points of the first telescopic connecting rod and the second telescopic connecting rod are both located above the mud surface, the distance of a cantilever is reduced, underwater welding and cutting-off procedures are omitted, the construction efficiency is improved, and meanwhile the cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a construction method of a trestle support pile connection system. Background Art

[0002] In traditional pier structures, the overall structure is usually formed by welding trusses above the water surface between steel pipe piles. The purpose of this structural design is to shorten the cantilever length of the steel pipe piles to enhance the bearing capacity of the pier against horizontal forces, thereby reducing the sway of the platform and ensuring the stability of the structure. However, this design has some significant disadvantages:

[0003] The design requires underwater welding and cutting operations, which is a cumbersome process and difficult to coordinate. It requires professional equipment and technical support, and the construction preparation time is long, and the connection efficiency between processes is not high;

[0004] Underwater welding has high requirements on welder skills and welding materials. The welding surface is not easy to dry in the underwater environment and is easily disturbed by factors such as water flow and temperature, resulting in unstable welding quality and a greater risk of welding defects, thus affecting the safety of the overall structure. Due to the complexity and technical difficulty of underwater welding, the construction efficiency is low. In addition, the underwater welding and cutting processes have high requirements on construction equipment and construction environment, which increases the construction cost.

[0005] Therefore, the construction method of traditional piers involves underwater operations, and has disadvantages such as complex procedures, high costs, long construction periods, and difficulty in quality control, which limits its promotion and application on a larger scale and has certain limitations in practical applications. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the present invention provides a construction method for a pier support pile connection system capable of avoiding underwater welding.

[0007] The present invention provides a construction method for a trestle support pile connection system, wherein the support pile connection system comprises a plurality of steel pipe pile assemblies arranged at intervals in a vertical direction and used to support a connection beam, wherein the steel pipe pile assemblies comprise three first steel pipe piles, a second steel pipe pile, and a third steel pipe pile that are adjacent to each other in sequence; a support diagonal rod assembly for maintaining force balance is arranged between the first steel pipe pile and the second steel pipe pile, and between the second steel pipe pile and the third steel pipe pile;

[0008] The construction method includes the following steps:

[0009] S1. Assemble steel pipe pile components:

[0010] According to the design requirements, the supporting diagonal rod assemblies are installed on the first steel pipe pile, the second steel pipe pile and the third steel pipe pile on land respectively. After the steel pipe pile assemblies are assembled, they are transported to the installation location;

[0011] S2. Installation of steel pipe piles:

[0012] According to the design requirements, the first steel pipe pile, the second steel pipe pile, and the third steel pipe pile are positioned, bored, lowered, and installed in order. After the first steel pipe pile and the second steel pipe pile are installed, the supporting diagonal rod assembly between the second steel pipe pile and the first steel pipe pile is assembled. After the third steel pipe pile is installed, the supporting diagonal rod assembly between the second steel pipe pile and the third steel pipe pile is assembled.

[0013] S3. Install the connecting beam:

[0014] The I-beam is welded and fixed on the top of the installed steel casing, and the connecting beam is installed on the top of the I-beam to complete the installation of the trestle support pile connection system.

[0015] In the construction method of the present technical solution, the supporting diagonal rod assembly is assembled onto the steel pipe pile on land without underwater welding and cutting processes, thereby improving construction efficiency and reducing costs.

[0016] In some embodiments of the present application, the supporting diagonal rod assembly includes:

[0017] A first telescopic connecting rod, the upper end of which is hinged to the upper end of the first steel pipe pile, and the lower end of which is hinged to the lower end of the second steel pipe pile;

[0018] A second telescopic connecting rod, the upper end of which is hinged to the upper end of the third steel pipe pile, and the lower end of which is hinged to the lower end of the second steel pipe pile;

[0019] A movable assembly is sleeved at the lower end of the second steel pipe pile, and the movable assembly includes a movable sleeve sleeved on the second steel pipe pile and capable of moving up and down along the second steel pipe pile, and the first telescopic connecting rod and the second telescopic connecting rod are symmetrically hinged on the left and right sides of the movable sleeve;

[0020] The position of the movable sleeve on the second steel pipe pile is above the mud surface, so that the lower end of the first telescopic connecting rod and the lower end of the second telescopic connecting rod are both above the mud surface.

[0021] In some embodiments of the present application, the movable assembly further includes an adjustment structure capable of adjusting the movable sleeve to move up and down, and the adjustment structure includes:

[0022] A first fixed sleeve is fixed to the upper end of the second steel pipe pile, and first ear plates are fixedly provided on the left and right sides of the first fixed sleeve respectively;

[0023] The left and right sides of the movable sleeve are respectively provided with second ear plates;

[0024] A third telescopic connecting rod is arranged between the first ear plate and the second ear plate located on the same side. When the length of the third telescopic connecting rod is adjusted to be longer, the movable sleeve moves downward along the second steel pipe pile; when the length of the third telescopic connecting rod is shortened, the movable sleeve moves upward along the second steel pipe pile.

[0025] In some embodiments of the present application, in step S1, the first fixed sleeve and the movable sleeve are fixed at the designed positions of the second steel pipe pile, the bottom ends of the first telescopic connecting rod and the second telescopic connecting rod are respectively installed on the movable sleeve, and the two ends of the third telescopic connecting rod are respectively installed on the first ear plate of the first fixed sleeve and the second ear plate of the movable sleeve; the middle parts of the first telescopic connecting rod and the second telescopic connecting rod are tied and fixed on the second steel pipe pile.

[0026] In some embodiments of the present application, a second fixing sleeve is provided at the upper end of the first steel pipe pile, and a third fixing sleeve is provided at a corresponding position of the upper end of the third steel pipe pile;

[0027] Fourth ear plates are fixed on the left and right sides of the second fixed sleeve, respectively, and the fourth ear plates are hinged to the upper end of the first telescopic connecting rod; fifth ear plates are fixed on the left and right sides of the third fixed sleeve, respectively, and the fifth ear plates are hinged to the upper end of the second telescopic connecting rod and adjust the length of the second telescopic adjustment rod.

[0028] In some embodiments of the present application, in step S1, it is also necessary to fix the second fixing sleeve at the designed position of the first steel pipe pile, and to fix the third fixing sleeve at the designed position of the third steel pipe pile.

[0029] In some embodiments of the present application, in step S2, after the first steel pipe pile and the second steel pipe pile are installed, the first telescopic connecting rod is first untied, and the upper end of the first telescopic connecting rod is connected to the fourth ear plate of the second fixing sleeve on the first steel pipe pile;

[0030] After the third steel pipe pile is installed, the second telescopic connecting rod is untied, and the upper end of the second telescopic connecting rod is connected to the fifth ear plate of the third fixing sleeve on the third steel pipe pile;

[0031] Continue to install the second steel pipe pile of the next steel pipe pile assembly, and use the installed third steel pipe pile as the first steel pipe pile of the next steel pipe pile assembly. Then untie the first telescopic connecting rod on the second steel pipe pile, and connect the upper end of the first telescopic connecting rod to the second fixed sleeve on the first steel pipe pile. Repeat the above steps until the steel pipe pile is installed.

[0032] In some embodiments of the present application, locking grooves extending vertically downward are symmetrically opened on the left and right sides of the upper end of the cylinder wall of the movable sleeve, and an eccentric locking component is arranged in the locking groove, and the eccentric locking component locks and positions the movable sleeve;

[0033] The eccentric locking assembly comprises:

[0034] There are two groups of eccentric wheel assemblies, which are symmetrically distributed in the locking groove, and each group includes a first eccentric wheel and a second eccentric wheel arranged up and down;

[0035] The second ear plates are arranged on both sides of the locking groove and are used to fix one end of the first eccentric wheel and the second eccentric wheel;

[0036] The other end of the first eccentric wheel is hinged to the lower end of the third telescopic connecting rod, the other end of the first eccentric wheel is also hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the other end of the second eccentric wheel;

[0037] When the movable sleeve moves to the designed position, the third telescopic connecting rod extends, the first eccentric wheel and the second eccentric wheel rotate, and clamp the second steel pipe pile; when the position of the movable sleeve needs to be adjusted, the third telescopic connecting rod contracts, the first eccentric wheel and the second eccentric wheel rotate in the opposite direction, separate from the second steel pipe pile, and adjust the length of the third telescopic connecting rod to make the movable sleeve move along the second steel pipe pile.

[0038] In some embodiments of the present application, the first eccentric wheel includes an arc-shaped clamping portion hinged to the second ear plate, and a movable portion hinged to the third telescopic connecting rod or the connecting rod;

[0039] The radius of the lower structure of the clamping part is greater than the radius of the upper structure, and the maximum radius of the clamping part is greater than the shortest vertical distance from the hinge point of the clamping part to the outer wall of the second steel pipe pile; the inner diameter of the movable sleeve is greater than the outer diameter of the second steel pipe pile, so that the movable sleeve can move up and down along the second steel pipe pile, and the clamping part can clamp the second steel pipe pile to lock the movable sleeve on the second steel pipe pile;

[0040] The second eccentric wheel has the same structure as the first eccentric wheel.

[0041] In some embodiments of the present application, the first telescopic connecting rod includes:

[0042] a first hinged rod, one end of which is hinged to the fourth ear plate of the first fixing sleeve, and the other end of which is provided with a first threaded section;

[0043] A second hinged rod, one end of which is hinged to the third ear plate of the movable sleeve and the other end of which is provided with a second threaded section;

[0044] The adjusting tube is a hollow tubular structure with threads arranged inside, and the two ends of the connecting tube are respectively connected to the first thread segment and the second thread segment;

[0045] The second telescopic connecting rod and the third telescopic connecting rod have the same structure as the first telescopic connecting rod;

[0046] In step S2, the length of the first telescopic connecting rod and the second telescopic connecting rod is adjusted by rotating the adjusting tube, and the pile spacing of the steel pipe piles is fine-tuned; by rotating the adjusting tube of the third telescopic connecting rod, the locking of the movable sleeve by the eccentric locking assembly can be released, and the position of the movable sleeve can be fine-tuned to meet the design requirements.

[0047] Based on the above technical solution, the supporting diagonal rod assembly of the present invention is assembled on the steel pipe pile on land, without underwater welding and cutting process, which improves the construction efficiency and reduces the cost;

[0048] By adjusting the position of the movable sleeve on the second steel pipe pile to be above the mud surface, the hinge load points of the first telescopic connecting rod and the second telescopic connecting rod are both located above the mud surface, reducing the distance of the cantilever, and eliminating underwater welding and cutting processes, thereby improving construction efficiency and reducing costs;

[0049] By adjusting the length of the first telescopic connecting rod and the second telescopic connecting rod, the spacing between the steel pipe piles can be fine-tuned to meet the design requirements;

[0050] By adjusting the length of the third telescopic connecting rod, the position of the movable sleeve can be adjusted, and the movable sleeve can be clamped to the second steel pipe pile, thereby achieving stable support for the steel pipe pile while meeting the design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0052] Figure 1 This is a schematic diagram of the structure after the first steel pipe pile, the second steel pipe pile, and the third steel pipe pile are installed in an embodiment of the present invention;

[0053] Figure 2 It is a schematic structural diagram of a first fixed sleeve in an embodiment of the present invention;

[0054] Figure 3 It is a structural schematic diagram of an active component in an embodiment of the present invention;

[0055] Figure 4 It is a structural schematic diagram of a movable sleeve in an embodiment of the present invention;

[0056] Figure 5 Schematic diagram of the structure of the first eccentric wheel in an embodiment of the present invention;

[0057] Figure 6 is a schematic structural diagram of a second fixed sleeve in an embodiment of the present invention;

[0058] Figure 7 Schematic diagram of the structure of the first telescopic connecting rod in an embodiment of the present invention;

[0059] Figure 8 It is a structural schematic diagram of the pier support pile connection structure in an embodiment of the present invention.

[0060] In the figure,

[0061] 10. Connecting beam; 20. First steel pipe pile; 21. Second fixed sleeve; 211. Fourth ear plate; 30. Second steel pipe pile; 40. Third steel pipe pile; 41. Third fixed sleeve; 411. Fifth ear plate; 50. Support diagonal rod assembly; 51. First telescopic connecting rod; 511. First hinged rod; 5111. First threaded section; 512. Second hinged rod; 5121. Second threaded section; 52. Second telescopic connecting rod ; 53. movable component; 531. movable sleeve; 5311. locking groove; 532. second ear plate; 533. third ear plate; 54. adjustment structure; 541. first fixed sleeve; 542. first ear plate; 55. third telescopic connecting rod; 56. eccentric locking assembly; 561. first eccentric wheel; 5611. clamping part; 5612. movable part; 562. second eccentric wheel; 563. connecting rod; 60. I-beam. DETAILED DESCRIPTION

[0062] 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. 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 making creative work are within the scope of protection of the present invention.

[0063] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0065] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present embodiment, the construction method of the trestle support pile connection system is provided, wherein the support pile connection system comprises a plurality of steel pipe pile assemblies arranged at intervals in a vertical direction, the steel pipe pile assemblies are used to support the connection beam 10, and the steel pipe pile assemblies comprise:

[0067] There are three adjacent first steel pipe piles 20, second steel pipe piles 30, and third steel pipe piles 40; between the first steel pipe piles 20 and the second steel pipe piles 30, and between the second steel pipe piles 30 and the third steel pipe piles 40, a supporting diagonal rod assembly 50 for maintaining force balance is provided.

[0068] The supporting diagonal rod assembly 50 comprises:

[0069] A first telescopic connecting rod 51, an upper end of which is hinged to an upper end of the first steel pipe pile 20, and a lower end of which is hinged to a lower end of the second steel pipe pile 30;

[0070] A second telescopic connecting rod 52, the upper end of which is hinged to the upper end of the third steel pipe pile 40, and the lower end of which is hinged to the lower end of the second steel pipe pile 30;

[0071] The lower end of the second steel pipe pile 30 is sleeved with a movable assembly 53, which includes a movable sleeve 531 sleeved on the second steel pipe pile 30 and capable of moving up and down along the second steel pipe pile 30, and a first telescopic connecting rod 51 and a second telescopic connecting rod 52 are symmetrically hinged on the left and right sides of the movable sleeve 531;

[0072] The movable sleeve 531 is located on the second steel pipe pile 30 above the mud surface, so that the lower end of the first telescopic connecting rod 51 and the lower end of the second telescopic connecting rod 52 are both located above the mud surface;

[0073] The left and right sides of the lower end of the second steel pipe pile 30 are respectively subjected to the forces of the first telescopic connecting rod 51 and the second telescopic connecting rod 52. The second steel pipe pile is subjected to balanced forces in the horizontal direction and is subjected to a vertical downward force at the same time.

[0074] The left and right sides of the upper end of the first steel pipe pile 20 are respectively subjected to the forces of the second telescopic connecting rod 52 in the previous adjacent steel pipe pile assembly and the first telescopic connecting rod 51 in the current group of steel pipe pile assemblies, and the second steel pipe pile 30 is subjected to balanced forces in the horizontal direction and is subjected to vertical downward forces at the same time;

[0075] The left and right sides of the upper end of the third steel pipe pile 40 are respectively subjected to the force of the second telescopic connecting rod 52 and the first telescopic connecting rod 51 in the next adjacent steel pipe pile assembly, and the third steel pipe pile is subjected to balanced force in the horizontal direction and is subjected to a vertical upward force at the same time; multiple steel pipe pile assemblies are subjected to balanced force in the vertical direction, providing stable support for the connecting beam 10;

[0076] like Figure 2 , 3 As shown in FIG. 8 , the movable assembly 53 further includes an adjusting structure 54 capable of adjusting the movable sleeve 531 to move up and down, and the adjusting structure 54 includes:

[0077] A first fixed sleeve 541 is fixed to the upper end of the second steel pipe pile 30, and first ear plates 542 are fixedly provided on the left and right sides of the first fixed sleeve 541;

[0078] The second ear plates 532 are respectively provided on the left and right sides of the movable sleeve 531;

[0079] A third telescopic connecting rod 55 is arranged between the first ear plate 542 and the second ear plate 532 located on the same side. When the movable sleeve 531 can move, the length of the third telescopic connecting rod 55 is adjusted to be longer, and the movable sleeve 531 moves downward along the second steel pipe pile 30 to perform fine position adjustment; the length of the third telescopic connecting rod 55 is shortened, and the movable sleeve 531 moves upward along the second steel pipe pile 30 to perform fine position adjustment.

[0080] See also Figure 3-4 The upper end of the wall of the movable sleeve 531 has symmetrical locking grooves 5311 extending vertically downward on both sides. An eccentric locking assembly 56 is arranged in the locking groove 5311 to lock and position the movable sleeve 531.

[0081] Specifically, the eccentric locking assembly comprises:

[0082] There are two groups of eccentric wheel assemblies 56, which are symmetrically distributed in the locking groove 5311, and each group includes a first eccentric wheel 561 and a second eccentric wheel 562 arranged up and down;

[0083] The second ear plates 532 are arranged on both sides of the locking groove 5311, and there are eight of them in total, and are used to fix one end of the first eccentric wheel 561 and the second eccentric wheel 562;

[0084] The other end of the first eccentric wheel 561 is hinged to the lower end of the third telescopic connecting rod 55, and the other end of the first eccentric wheel 561 is also hinged to one end of the connecting rod 563, and the other end of the connecting rod 563 is hinged to the other end of the second eccentric wheel 562. The first eccentric wheel 561, the connecting rod 563, the second eccentric wheel 562 and part of the movable sleeve 531 form a four-bar structure.

[0085] More specifically, the first eccentric wheel 561 includes an arc-shaped clamping portion 5611 hinged to the second ear plate 532 and a movable portion 5612 hinged to the third telescopic connecting rod 55 or the connecting rod 563;

[0086] like Figure 5 As shown, the radius R1 of the lower structure of the clamping part 5611 is greater than the radius R2 of the upper structure, the maximum radius of the clamping part 5611 is greater than the shortest vertical distance from the hinge point o of the clamping part 5611 to the outer wall of the second steel pipe pile 30, and the clamping part 5611 can clamp the second steel pipe pile 30 to lock the movable sleeve 531 on the second steel pipe pile 30; the second eccentric wheel 562 has the same structure as the first eccentric wheel 561, and the first eccentric wheel 561 drives the second eccentric wheel 562 to rotate through the connecting rod 563; the inner diameter of the movable sleeve 531 is greater than the outer diameter of the second steel pipe pile 30, so that the movable sleeve 531 can move up and down along the second steel pipe pile 30 to fine-tune the position,

[0087] In this embodiment, the width of the movable portion 5612 gradually decreases in a direction away from the clamping portion;

[0088] Third ear plates 533 are symmetrically arranged on the left and right sides below the movable sleeve 531, and the first telescopic connecting rod 51 and the second telescopic connecting rod 53 are hinged on the third ear plates 533 respectively;

[0089] like Figure 6 , Figure 8As shown, a second fixed sleeve 21 is provided at the upper end of the first steel pipe pile 20, and a third fixed sleeve 41 is provided at a corresponding position of the upper end of the third steel pipe pile 40; fourth ear plates 211 are fixed to the left and right sides of the second fixed sleeve 21, and the fourth ear plate 211 is hinged to the upper end of the first telescopic connecting rod 51; fifth ear plates 411 are fixed to the left and right sides of the third fixed sleeve 41, and the fifth ear plate 411 is hinged to the upper end of the second telescopic connecting rod 52.

[0090] The construction method of this embodiment specifically includes the following steps:

[0091] S1. Assemble steel pipe pile components:

[0092] According to the hydrological characteristics and geological conditions of the construction site, the length of each steel pipe pile, the distance between the piles, the position of the hinge point of the first telescopic rod 51 on the first steel pipe pile 20 and the second steel pipe pile 30, and the position of the hinge point of the second telescopic rod 52 on the second steel pipe pile 30 and the third steel pipe pile 40 are calculated, that is, the position of the second fixed sleeve 21 on the first steel pipe pile 20, the position of the first fixed sleeve 541 on the second steel pipe pile 30, the position of the third fixed sleeve 41 on the third steel pipe pile 40, and the position of the movable sleeve 531 on the second steel pipe pile 30 are determined;

[0093] It is worth noting that the third steel pipe pile 40, the third fixing sleeve 41 and the fifth ear plate 411 on the third steel pipe pile 40 in the previous steel pipe pile assembly serve as the first steel pipe pile 20, the second fixing sleeve 21 and the fourth ear plate 211 in the next steel pipe pile assembly. Figure 6 It is both the third steel pipe pile 40 in the previous steel pipe pile assembly in this embodiment and the first steel pipe pile 20 in the next steel pipe pile assembly, that is, the third fixing sleeve 41 and the second fixing sleeve 21 are in the same position, and only the position of the second fixing sleeve 21 on the first steel pipe pile 21 and the position of the first fixing sleeve 541 on the second steel pipe pile 30 can be calculated; ensure that the second fixing sleeve 21 and the first fixing sleeve 541 are above the water surface, and the movable sleeve 531 is above the mud surface;

[0094] According to the above calculation results, on land, the second fixed sleeve 21 is fixed to the first steel pipe pile 20, the first fixed sleeve 541 is fixed to the second steel pipe pile 30, and the third fixed sleeve 41 is fixed to the third steel pipe pile 40. The bottom ends of the first telescopic connecting rod 51 and the second telescopic connecting rod 52 are respectively installed on the third ear plate 533 of the movable sleeve 531. The two ends of the third telescopic connecting rod 55 are respectively installed on the first ear plate 542 of the first fixed sleeve 541 and the second ear plate 532 of the movable sleeve 531. The extension of the third telescopic connecting rod 55 is adjusted, and the first eccentric wheel 561 and the second eccentric wheel 562 rotate counterclockwise around the hinge axis of the second ear plate 532 and clamp the second steel pipe pile 30. The middle parts of the first telescopic connecting rod 51 and the second telescopic connecting rod 52 are tied and fixed to the second steel pipe pile 20, so that the first telescopic connecting rod 51, the second telescopic connecting rod 52, and the third telescopic connecting rod 55 are all centrally fixed on the second steel pipe pile 30.

[0095] The first fixing sleeve 541, the second fixing sleeve 21, and the third fixing sleeve 41 are all fixed to the steel pipe pile by means of clamps through bolts. In other embodiments, the first ear plate 542, the fourth ear plate 211, and the fifth ear plate 411 can also be directly welded at the upper end design position of the second steel pipe pile 30, the first steel pipe pile 20, and the third steel pipe pile 40 without using a clamp; in addition, the fifth ear plate 411 of the previous steel pipe pile assembly is the fourth ear plate 211 of the next steel pipe pile assembly;

[0096] Transporting the assembled first steel pipe pile 20, the second steel pipe pile 30, and the third steel pipe pile 40 to the installation location;

[0097] S2. Installation of steel pipe piles:

[0098] According to the design requirements, the first steel pipe pile 20 is installed first, and the first steel pipe pile 20 is positioned, bored, lowered, installed, and fixed at the installation position; then the second steel pipe pile 30 is installed, and after the second steel pipe pile 30 is installed in the same way, the first telescopic connecting rod 51 is untied, and the upper end of the first telescopic connecting rod 51 is connected to the fourth ear plate 211 of the second fixing sleeve 21 on the first steel pipe pile 20;

[0099] After the third steel pipe pile 40 is installed, the second telescopic connecting rod 51 of the second steel pipe pile 30 is untied, and the upper end of the second telescopic connecting rod 52 is connected to the fifth ear plate 411 of the third fixing sleeve 41 on the third steel pipe pile 40. Figure 1 As shown;

[0100] Then install the second steel pipe pile 30 of the next steel pipe pile assembly. At this time, the third steel pipe pile 40 that has been installed in the previous steel pipe pile assembly is used as the first steel pipe pile of the next steel pipe pile assembly. After the second steel pipe pile 30 is installed, untie the first telescopic connecting rod 51, and connect the upper end of the first telescopic connecting rod 51 to the fourth ear plate 211 of the second fixed sleeve 21 on the first steel pipe pile 20; then install the third steel pipe pile 40, untie the second telescopic connecting rod 51 of the second steel pipe pile 30, and connect the upper end of the second telescopic connecting rod 52 to the fifth ear plate 411 of the third fixed sleeve 41 on the third steel pipe pile 40;

[0101] Repeat the above steps until the steel pipe piles are installed. Figure 8 As shown;

[0102] S3. Install the connecting beam:

[0103] The I-beam 50 is welded and fixed on the top of the installed steel casing, and the Bailey frame is installed on the top of the I-beam 50 as a connecting beam 10 through U-bolts to complete the installation of the entire trestle support pile connection system.

[0104] In step S2, when an error occurs in the distance between the two steel pipe piles, the lengths of the first telescopic connecting rod and the second telescopic connecting rod can be adjusted to fine-tune the distance between the piles. In this embodiment, the first telescopic connecting rod 51 and the second telescopic connecting rod 52 have the same structure. The structure of the first telescopic connecting rod 51 is described by taking the first telescopic connecting rod 51 as an example. Figure 7 As shown, specifically including:

[0105] A first hinge rod 511, the upper end of which is hinged to the fourth ear plate 211 of the second fixed sleeve, and the lower end of which is provided with a first threaded section 5111;

[0106] The second hinged rod 512 has a lower end hinged to the third ear plate 533 of the movable sleeve 531 and an upper end provided with a second threaded section 5121;

[0107] The adjusting tube 513 is a hollow tubular structure with threads inside. The two ends of the adjusting tube 513 are connected to the first threaded section 5111 and the second threaded section 5121 respectively. By rotating the adjusting tube 513, the length of the first telescopic connecting rod 51 changes, and the distance between the steel pipe piles can be fine-tuned. It is worth noting that in this embodiment, the second hinged rod 512 is relatively long, and the upper part of the structure is located above the water surface. The first hinged rod 511 and the adjusting tube 513 are all located above the water surface, which is convenient for construction personnel to perform corresponding operations on the adjusting tube 513 above the water surface, reducing underwater operations.

[0108] Similarly, when the position of the movable sleeve 531 deviates from the designed position, its position can be fine-tuned by the third telescopic connecting rod 55, and the third telescopic connecting rod 55 has the same structure as the first telescopic connecting rod 51 and the second telescopic connecting rod 52. When the position of the movable sleeve 531 needs to be adjusted, the third telescopic connecting rod 55 is retracted, the first eccentric wheel 561 and the second eccentric wheel 562 rotate clockwise around the hinge axis of the second ear plate 532, and the movable sleeve 531 is separated from the second steel pipe pile 30. When the length of the third telescopic connecting rod 55 is adjusted, the movable sleeve 531 is moved along the second steel pipe pile 30, and the position of the movable sleeve is fine-tuned to reduce the installation error and meet the design requirements.

[0109] In the construction method of the present technical solution, the supporting diagonal rod assembly is assembled onto the steel pipe pile on land without underwater welding and cutting processes, thereby improving construction efficiency and reducing costs.

[0110] The movable sleeve 531 is located above the mud surface on the second steel pipe pile 30, so that the hinge bearing points of the first telescopic connecting rod 51 and the second telescopic connecting rod 52 are both located above the mud surface, reducing the distance of the cantilever, and eliminating underwater welding and cutting processes, thereby improving construction efficiency and reducing costs;

[0111] The first hinged rod 511 and the adjusting pipe 513 are all located above the water surface, which is convenient for construction personnel to operate the adjusting pipe 513 above the water surface, thereby reducing underwater operations. At the same time, by adjusting the length of the first telescopic connecting rod 51 and the second telescopic connecting rod 52, the spacing between the steel pipe piles can be fine-tuned to meet the design requirements.

[0112] Adjusting the length of the third telescopic connecting rod 55 can not only fine-tune the position of the movable sleeve 531, but also enable the movable sleeve 531 to clamp the second steel pipe pile 30, thereby achieving stable support for the steel pipe pile while meeting design requirements.

[0113] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0114] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A construction method for a trestle support pile connection system, characterized in that: The supporting pile connection system comprises a plurality of steel pipe pile assemblies arranged at intervals in a vertical direction and used to support the connecting beam, wherein the steel pipe pile assemblies comprise three adjacent first steel pipe piles, second steel pipe piles and third steel pipe piles; a supporting diagonal rod assembly for maintaining force balance is arranged between the first steel pipe pile and the second steel pipe pile, and between the second steel pipe piles and the third steel pipe pile; The construction method includes the following steps: S1. Assemble steel pipe pile components: According to the design requirements, the supporting diagonal rod assemblies are installed on the first steel pipe pile, the second steel pipe pile and the third steel pipe pile on land respectively. After the steel pipe pile assemblies are assembled, they are transported to the installation location; S2. Installation of steel pipe piles: According to the design requirements, the first steel pipe pile, the second steel pipe pile, and the third steel pipe pile are positioned, bored, lowered, and installed in order. After the first steel pipe pile and the second steel pipe pile are installed, the supporting diagonal rod assembly between the second steel pipe pile and the first steel pipe pile is assembled. After the third steel pipe pile is installed, the supporting diagonal rod assembly between the second steel pipe pile and the third steel pipe pile is assembled. S3. Install the connecting beam: The I-beam is welded and fixed on the top of the installed steel casing, and the connecting beam is installed on the top of the I-beam to complete the installation of the trestle support pile connection system.

2. The construction method of the pier support pile connection system according to claim 1, characterized in that: The supporting diagonal rod assembly comprises: A first telescopic connecting rod, the upper end of which is hinged to the upper end of the first steel pipe pile, and the lower end of which is hinged to the lower end of the second steel pipe pile; A second telescopic connecting rod, the upper end of which is hinged to the upper end of the third steel pipe pile, and the lower end of which is hinged to the lower end of the second steel pipe pile; A movable assembly is sleeved at the lower end of the second steel pipe pile, and the movable assembly includes a movable sleeve sleeved on the second steel pipe pile and capable of moving up and down along the second steel pipe pile, and the first telescopic connecting rod and the second telescopic connecting rod are symmetrically hinged on the left and right sides of the movable sleeve; The position of the movable sleeve on the second steel pipe pile is above the mud surface, so that the lower end of the first telescopic connecting rod and the lower end of the second telescopic connecting rod are both above the mud surface.

3. The construction method of the pier support pile connection system according to claim 2, characterized in that: The movable assembly further includes an adjustment structure capable of adjusting the movable sleeve to move up and down, and the adjustment structure includes: A first fixed sleeve is fixed to the upper end of the second steel pipe pile, and first ear plates are fixedly provided on the left and right sides of the first fixed sleeve respectively; The left and right sides of the movable sleeve are respectively provided with second ear plates; A third telescopic connecting rod is arranged between the first ear plate and the second ear plate located on the same side. When the length of the third telescopic connecting rod is adjusted to be longer, the movable sleeve moves downward along the second steel pipe pile; when the length of the third telescopic connecting rod is shortened, the movable sleeve moves upward along the second steel pipe pile.

4. The construction method of the pier support pile connection system according to claim 3, characterized in that: In step S1, the first fixed sleeve and the movable sleeve are fixed at the designed positions of the second steel pipe pile, the bottom ends of the first telescopic connecting rod and the second telescopic connecting rod are respectively installed on the movable sleeve, and the two ends of the third telescopic connecting rod are respectively installed on the first ear plate of the first fixed sleeve and the second ear plate of the movable sleeve; the middle parts of the first telescopic connecting rod and the second telescopic connecting rod are tied and fixed on the second steel pipe pile.

5. The construction method of the pier support pile connection system according to claim 1, characterized in that: A second fixing sleeve is disposed at the upper end of the first steel pipe pile, and a third fixing sleeve is disposed at a corresponding position of the upper end of the third steel pipe pile; Fourth ear plates are fixed on the left and right sides of the second fixed sleeve, respectively, and the fourth ear plates are hinged to the upper end of the first telescopic connecting rod; fifth ear plates are fixed on the left and right sides of the third fixed sleeve, respectively, and the fifth ear plates are hinged to the upper end of the second telescopic connecting rod and adjust the length of the second telescopic adjustment rod.

6. The construction method of the pier support pile connection system according to claim 5, characterized in that: In step S1, it is also necessary to fix the second fixing sleeve at the designed position of the first steel pipe pile, and fix the third fixing sleeve at the designed position of the third steel pipe pile.

7. The construction method of the pier support pile connection system according to claim 5, characterized in that: In step S2, after the first steel pipe pile and the second steel pipe pile are installed, the first telescopic connecting rod is first untied, and the upper end of the first telescopic connecting rod is connected to the fourth ear plate of the second fixing sleeve on the first steel pipe pile; After the third steel pipe pile is installed, the second telescopic connecting rod is untied, and the upper end of the second telescopic connecting rod is connected to the fifth ear plate of the third fixing sleeve on the third steel pipe pile; Continue to install the second steel pipe pile of the next steel pipe pile assembly, and use the installed third steel pipe pile as the first steel pipe pile of the next steel pipe pile assembly. Then untie the first telescopic connecting rod on the second steel pipe pile, and connect the upper end of the first telescopic connecting rod to the second fixed sleeve on the first steel pipe pile. Repeat the above steps until the steel pipe pile is installed.

8. The construction method of the pier support pile connection system according to claim 3, characterized in that The upper end of the cylinder wall of the movable sleeve is symmetrically provided with locking grooves extending vertically downward on both sides, and an eccentric locking assembly is arranged in the locking groove, and the eccentric locking assembly locks and positions the movable sleeve; The eccentric locking assembly comprises: There are two groups of eccentric wheel assemblies, which are symmetrically distributed in the locking groove, and each group includes a first eccentric wheel and a second eccentric wheel arranged up and down; The second ear plates are arranged on both sides of the locking groove and are used to fix one end of the first eccentric wheel and the second eccentric wheel; The other end of the first eccentric wheel is hinged to the lower end of the third telescopic connecting rod, the other end of the first eccentric wheel is also hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the other end of the second eccentric wheel; When the movable sleeve moves to the designed position, the third telescopic connecting rod extends, the first eccentric wheel and the second eccentric wheel rotate, and clamp the second steel pipe pile; when the position of the movable sleeve needs to be adjusted, the third telescopic connecting rod contracts, the first eccentric wheel and the second eccentric wheel rotate in the opposite direction, separate from the second steel pipe pile, and adjust the length of the third telescopic connecting rod to make the movable sleeve move along the second steel pipe pile.

9. The construction method of the pier support pile connection system according to claim 8, characterized in that: The first eccentric wheel comprises an arc-shaped clamping portion hinged to the second ear plate, and a movable portion hinged to the third telescopic connecting rod or the connecting rod; The radius of the lower structure of the clamping part is greater than the radius of the upper structure, and the maximum radius of the clamping part is greater than the shortest vertical distance from the hinge point of the clamping part to the outer wall of the second steel pipe pile; the inner diameter of the movable sleeve is greater than the outer diameter of the second steel pipe pile, so that the movable sleeve can move up and down along the second steel pipe pile, and the clamping part can clamp the second steel pipe pile to lock the movable sleeve on the second steel pipe pile; The second eccentric wheel has the same structure as the first eccentric wheel.

10. The construction method of the pier support pile connection system according to claim 2, characterized in that: The first telescopic connecting rod comprises: a first hinged rod, one end of which is hinged to the fourth ear plate of the first fixing sleeve, and the other end of which is provided with a first threaded section; A second hinged rod, one end of which is hinged to the third ear plate of the movable sleeve and the other end of which is provided with a second threaded section; The adjusting tube is a hollow tubular structure with threads arranged inside, and the two ends of the connecting tube are respectively connected to the first thread segment and the second thread segment; The second telescopic connecting rod and the third telescopic connecting rod have the same structure as the first telescopic connecting rod; In step S2, the length of the first telescopic connecting rod and the second telescopic connecting rod is adjusted by rotating the adjusting tube, and the pile spacing of the steel pipe piles is fine-tuned; by rotating the adjusting tube of the third telescopic connecting rod, the locking of the movable sleeve by the eccentric locking assembly can be released, and the position of the movable sleeve can be fine-tuned to meet the design requirements.

Images