Construction method of trestle support pile connection system

Abstract

The present application relates to the technical field of bridge construction, and more particularly to a construction method of a trestle support pile connecting system, the support pile connecting system comprising a plurality of vertically spaced steel pipe pile assemblies for supporting a connecting beam, each steel pipe pile assembly comprising three first, second and third steel pipe piles arranged in sequence; a support inclined rod assembly is arranged between the first and second steel pipe piles and between the second and third steel pipe piles for maintaining force balance; the construction method comprises the following steps: S1, assembling the steel pipe pile assembly; S2, installing the steel pipe pile; S3, installing the connecting beam; the position of the movable sleeve on the second steel pipe pile is adjusted to be above the mud surface, so that the hinge force points of the first and second telescopic connecting rods are both above the mud surface, the cantilever distance is reduced, and the process of underwater welding and cutting is eliminated, thereby improving the construction efficiency and reducing the cost.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a construction method for a trestle bridge support pile connection system. Background Technology

[0002] In traditional trestle bridge structures, a common method is to form a monolithic structure by welding trusses above the waterline between steel pipe piles. The purpose of this design is to shorten the cantilever length of the steel pipe piles, thereby enhancing the trestle bridge's ability to withstand horizontal forces, reducing platform sway, and ensuring structural stability. However, this design has some significant drawbacks:

[0003] The design scheme requires underwater welding and cutting operations, which is a complicated process with great coordination difficulties. It requires professional equipment and technical support, and the construction preparation time is long, with low efficiency in the connection between processes.

[0004] Underwater welding demands high levels of skill from welders and advanced welding materials. The welded surface is difficult to dry in the underwater environment and is easily affected by factors such as water flow and temperature, leading to unstable weld quality and a higher risk of welding defects, thus impacting the overall structural safety. Furthermore, the complexity and technical difficulty of underwater welding result in lower construction efficiency. In addition, underwater welding and cutting processes place high demands on construction equipment and the construction environment, increasing construction costs.

[0005] Therefore, the traditional construction method of trestle bridges involves underwater operations, which has disadvantages such as complex procedures, high costs, long construction period and difficulty in quality control, thus limiting its wider application and having certain limitations in practical use. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the present invention provides a construction method for a trestle support pile connection system that can avoid underwater welding.

[0007] This invention provides a construction method for a trestle bridge support pile connection system. The support pile connection system includes multiple vertically spaced steel pipe pile assemblies for supporting connecting beams. Each steel pipe pile assembly includes three sequentially adjacent first steel pipe piles, second steel pipe piles, and third steel pipe piles. Supporting diagonal rod assemblies for maintaining force balance are provided between the first steel pipe piles and the second steel pipe piles, and between the second steel pipe piles and the third steel pipe piles.

[0008] The construction method includes the following steps:

[0009] S1. Assemble the steel pipe pile assembly:

[0010] According to the design requirements, the supporting diagonal rod assembly will be installed on the first steel pipe pile, the second steel pipe pile, and the third steel pipe pile on land. After the steel pipe pile assembly is assembled, it will be 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, drilled, lowered, and installed in sequence. After the first and second steel pipe piles are installed, the supporting diagonal bracing assembly between the second and first steel pipe piles is assembled. After the third steel pipe pile is installed, the supporting diagonal bracing assembly between the second and third steel pipe piles is assembled.

[0013] S3. Install the connecting beam:

[0014] Weld and fix the I-beam to the top of the installed steel casing, and install the connecting beam on the top of the I-beam to complete the installation of the trestle bridge support pile connection system.

[0015] In the construction method of this technical solution, the supporting diagonal rod assembly is assembled onto the steel pipe pile on land, eliminating the need for underwater welding and cutting processes, thereby improving construction efficiency and reducing costs.

[0016] In some embodiments of this application, the support diagonal rod assembly includes:

[0017] The first telescopic connecting rod has its upper end hinged to the upper end of the first steel pipe pile and its lower end hinged to the lower end of the second steel pipe pile.

[0018] The second telescopic connecting rod has its upper end hinged to the upper end of the third steel pipe pile and its lower end hinged to the lower end of the second steel pipe pile.

[0019] The lower end of the second steel pipe pile is fitted with a movable component, the movable component including a movable sleeve fitted on the second steel pipe pile and capable of moving up and down along the second steel pipe pile, the first telescopic connecting rod and the second telescopic connecting rod being symmetrically hinged to the left and right sides of the movable sleeve;

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

[0021] In some embodiments of this application, the movable component further includes an adjustment structure capable of adjusting the vertical movement of the movable sleeve, the adjustment structure comprising:

[0022] The first fixing sleeve is fixed to the upper end of the second steel pipe pile, and the first ear plate is fixedly provided on the left and right sides of the first fixing sleeve respectively.

[0023] The movable sleeve is provided with second ear plates on its left and right sides respectively;

[0024] A third telescopic connecting rod is provided between the first ear plate and the second ear plate on the same side. When the length of the third telescopic connecting rod is increased, the movable sleeve moves downward along the second steel pipe pile; when the length of the third telescopic connecting rod is decreased, the movable sleeve moves upward along the second steel pipe pile.

[0025] In some embodiments of this application, in step S1, the first fixed sleeve and the movable sleeve are fixed at the designed position 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 to the second steel pipe pile.

[0026] In some embodiments of this 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 the corresponding position at the upper end of the third steel pipe pile.

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

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

[0029] In some embodiments of this 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 fixed 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 fixed sleeve on the third steel pipe pile.

[0031] Continue installing the second steel pipe pile of the next steel pipe pile assembly. The third steel pipe pile that has been installed is used 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 this application, the upper left and right sides of the upper end of the sleeve of the movable sleeve are symmetrically provided with vertically downward extending locking grooves, and an eccentric locking component is provided in the locking groove, the eccentric locking component locks and positions the movable sleeve.

[0033] The eccentric locking assembly includes:

[0034] The eccentric wheel assembly consists of two sets, symmetrically distributed within the locking groove. Each set includes two eccentric wheels, a first eccentric wheel and a second eccentric wheel, arranged vertically.

[0035] The second ear plate is disposed on both sides of the locking groove and is 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, and 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, and the first eccentric wheel and the second eccentric wheel rotate and clamp the second steel pipe pile; when it is necessary to adjust the position of the movable sleeve, the third telescopic connecting rod retracts, and the first eccentric wheel and the second eccentric wheel rotate in the opposite direction and separate from the second steel pipe pile. The length of the third telescopic connecting rod is then adjusted so that the movable sleeve moves along the second steel pipe pile.

[0038] In some embodiments of this application, the first eccentric wheel includes an arc-shaped clamping part hinged to the second ear plate and a movable part 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 this application, the first telescopic connecting rod includes:

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

[0043] The second hinge rod has one end hinged to the third lug of the movable sleeve, and the other end is provided with a second threaded section;

[0044] The regulating tube is a hollow tubular structure with internal threads. The two ends of the regulating tube are respectively connected to the first threaded section and the second threaded section.

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

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

[0047] Based on the above technical solution, the support diagonal rod assembly of the present invention can be assembled onto the steel pipe pile on land, without underwater welding and cutting processes, which improves construction efficiency and reduces costs.

[0048] By adjusting the position of the movable sleeve on the second steel pipe pile above the mud surface, the hinge bearing points of the first and second telescopic connecting rods are both located above the mud surface, reducing the cantilever distance and eliminating underwater welding and cutting processes, thus improving construction efficiency while reducing costs.

[0049] The spacing between the steel pipe piles can be fine-tuned by adjusting the lengths of the first and second telescopic connecting rods to meet design requirements.

[0050] Adjusting the length of the third telescopic connecting rod can both adjust the position of the movable sleeve and clamp the second steel pipe pile, thus achieving stable support for the steel pipe pile while meeting design requirements. Attached Figure Description

[0051] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. 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 This is a schematic diagram of the structure of the first fixed sleeve in an embodiment of the present invention;

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

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

[0056] Figure 5 This is a schematic diagram of the structure of the first eccentric wheel in an embodiment of the present invention;

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

[0058] Figure 7 This is a schematic diagram of the structure of the first telescopic connecting rod in an embodiment of the present invention;

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

[0060] In the picture,

[0061] 10. Connecting beam; 20. First steel pipe pile; 21. Second fixing sleeve; 211. Fourth ear plate; 30. Second steel pipe pile; 40. Third steel pipe pile; 41. Third fixing sleeve; 50. Supporting diagonal rod assembly; 51. First telescopic connecting rod; 511. First hinge rod; 5111. First threaded section; 512. Second hinge rod; 5121. Second threaded section; 513. Adjusting tube; 52. Second telescopic connecting rod; 53. Movable assembly; 531. Movable sleeve; 5311. Locking groove; 532. Second ear plate; 533. Third ear plate; 54. Adjusting structure; 541. First fixed sleeve; 542. First ear plate; 55. Third telescopic connecting rod; 56. Eccentric wheel assembly; 561. First eccentric wheel; 5611. Clamping part; 5612. Movable part; 562. Second eccentric wheel; 563. Connecting rod; 60. I-beam. Detailed Implementation

[0062] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0063] In the description of this invention, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

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

[0065] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0066] This embodiment describes the construction method of the trestle bridge support pile connection system, wherein the support pile connection system includes multiple vertically spaced steel pipe pile assemblies, which are used to support the connecting beam 10. Each steel pipe pile assembly includes:

[0067] Three sequentially adjacent steel pipe piles—a first steel pipe pile 20, a second steel pipe pile 30, and a third steel pipe pile 40—are provided with supporting diagonal bracing assemblies 50 to maintain force balance between the first steel pipe pile 20 and the second steel pipe pile 30, and between the second steel pipe pile 30 and the third steel pipe pile 40.

[0068] The support diagonal member assembly 50 includes:

[0069] The first telescopic connecting rod 51 has its upper end hinged to the upper end of the first steel pipe pile 20 and its lower end hinged to the lower end of the second steel pipe pile 30.

[0070] The second telescopic connecting rod 52 has its upper end hinged to the upper end of the third steel pipe pile 40 and its lower end hinged to the lower end of the second steel pipe pile 30.

[0071] The lower end of the second steel pipe pile 30 is fitted with a movable component 53. The movable component 53 includes a movable sleeve 531 that is fitted on the second steel pipe pile 30 and can move up and down along the second steel pipe pile 30. The first telescopic connecting rod 51 and the 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 positioned above the mud surface on the second steel pipe pile 30, so that the lower ends of the first telescopic connecting rod 51 and the second telescopic connecting rod 52 are both above the mud surface.

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

[0074] The upper left and right sides 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 this group of steel pipe pile assemblies. The second steel pipe pile 30 is in equilibrium in the horizontal direction and is subjected to a vertical downward force at the same time.

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

[0076] like Figure 2 , 3 As shown in Figure 8, the movable component 53 also includes an adjustment structure 54 capable of adjusting the vertical movement of the movable sleeve 531. The adjustment structure 54 includes:

[0077] The first fixing sleeve 541 is fixed to the upper end of the second steel pipe pile 30, and the first ear plate 542 is fixedly provided on the left and right sides of the first fixing sleeve 541 respectively.

[0078] The movable sleeve 531 is provided with second ear plates 532 on its left and right sides respectively;

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

[0080] See Figure 3-4 The upper end of the sleeve 531 has symmetrical locking grooves 5311 extending vertically downward on both sides. An eccentric locking component is provided in the locking groove 5311, which locks and positions the sleeve 531.

[0081] Specifically, the eccentric locking assembly includes:

[0082] The eccentric wheel assembly 56 has two sets, symmetrically distributed in the locking groove 5311. Each set includes two first eccentric wheels 561 and second eccentric wheels 562 arranged vertically.

[0083] The second ear plate 532 is provided on both sides of the locking groove 5311, and there are eight of them in total, which 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. The other end of the first eccentric wheel 561 is also hinged to one end of the connecting rod 563. 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 the movable sleeve 531 form a four-bar linkage structure.

[0085] More specifically, the first eccentric wheel 561 includes an arc-shaped clamping part 5611 hinged to the second ear plate 532 and a movable part 5612 hinged to the third telescopic connecting rod 55 or 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. The clamping part 5611 can clamp the second steel pipe pile 30 and lock the movable sleeve 531 onto the second steel pipe pile 30. The second eccentric wheel 562 has the same structure as the first eccentric wheel 561. 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 for fine-tuning of its position.

[0087] In this embodiment, the width of the movable part 5612 gradually decreases along the direction away from the clamping part;

[0088] The movable sleeve 531 is also symmetrically provided with third ear plates 533 on the lower left and right sides, and the first telescopic connecting rod 51 and the second telescopic connecting rod 52 are respectively hinged to the third ear plates 533;

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

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

[0091] S1. Assemble the steel pipe pile assembly:

[0092] Based on the hydrological characteristics and geological conditions of the construction site, the length of each steel pipe pile, the pile spacing, the position of the hinge point of the first telescopic connecting 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 connecting rod 52 on the second steel pipe pile 30 and the third steel pipe pile 40 were calculated. Thus, the positions of the second fixed sleeve 21 on the first steel pipe pile 20, the first fixed sleeve 541 on the second steel pipe pile 30, the third fixed sleeve 41 on the third steel pipe pile 40, and the movable sleeve 531 on the second steel pipe pile 30 were determined.

[0093] It is worth noting that the third steel pipe pile 40 in the previous steel pipe pile assembly, and the third fixing sleeve 41 and the fifth ear plate on the third steel pipe pile 40, 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. Therefore, Figure 6 This 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 fixed sleeve 41 and the second fixed sleeve 21 are in the same position. Only the position of the second fixed sleeve 21 on the first steel pipe pile 20 and the position of the first fixed sleeve 541 on the second steel pipe pile 30 need to be calculated. Ensure that the second fixed sleeve 21 and the first fixed sleeve 541 are above the water surface and the movable sleeve 531 is above the mud surface.

[0094] Based on the above calculations, 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 30, so that the first telescopic connecting rod 51, the second telescopic connecting rod 52, and the third telescopic connecting rod 55 are all concentrated and 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 clamps that are fixed to the steel pipe pile by bolts. In other embodiments, the first ear plate 542, the fourth ear plate 211, and the fifth ear plate can also be directly welded to the upper designed positions of the second steel pipe pile 30, the first steel pipe pile 20, and the third steel pipe pile 40 without the need for clamps. In addition, the fifth ear plate of the previous steel pipe pile assembly is the fourth ear plate 211 of the next steel pipe pile assembly.

[0096] The assembled first steel pipe pile 20, second steel pipe pile 30, and third steel pipe pile 40 were transported 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. The first steel pipe pile 20 is positioned, drilled, lowered, installed and fixed at the installation position. Then the second steel pipe pile 30 is installed. 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 installing the third steel pipe pile 40, untie the second telescopic connecting rod 52 of the second steel pipe pile 30, and connect the upper end of the second telescopic connecting rod 52 to the fifth ear plate of the third fixing sleeve 41 on the third steel pipe pile 40, as follows. Figure 1 As shown;

[0100] Then, the second steel pipe pile 30 of the next steel pipe pile assembly is installed. At this time, the third steel pipe pile 40 that has been installed in the previous steel pipe pile assembly serves as the first steel pipe pile of the next steel pipe pile assembly. After the second steel pipe pile 30 is installed, 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. Then, the third steel pipe pile 40 is installed, and the second telescopic connecting rod 52 of the second steel pipe pile 30 is untied. The upper end of the second telescopic connecting rod 52 is connected to the fifth ear plate of the third fixing sleeve 41 on the third steel pipe pile 40.

[0101] Repeat the above steps until the steel pipe pile installation is complete, such as... Figure 8 As shown;

[0102] S3. Install the connecting beam:

[0103] The I-beam 60 is welded and fixed to the top of the installed steel casing, and the Bailey bridge frame is installed as the connecting beam 10 on the top of the I-beam 60 with U-bolts, thus completing the installation of the entire trestle bridge support pile connection system.

[0104] In step S2, when an error occurs in the pile spacing between two steel pipe piles, the lengths of the first and second telescopic connecting rods can be adjusted to fine-tune the pile spacing. In this embodiment, the first telescopic connecting rod 51 and the second telescopic connecting rod 52 have the same structure. Taking the first telescopic connecting rod 51 as an example, its structure will be explained as follows: Figure 7 As shown, it specifically includes:

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

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

[0107] The adjusting pipe 513 is a hollow tubular structure with internal threads. Its two ends are connected to the first threaded section 5111 and the second threaded section 5121, respectively. Rotating the adjusting pipe 513 changes the length of the first telescopic connecting rod 51, allowing for fine-tuning of the pile spacing between the steel pipe piles. Notably, in this embodiment, the second hinged rod 512 is relatively long, with its upper portion above the water surface. The first hinged rod 511 and the adjusting pipe 513 are entirely above the water surface, facilitating operations by construction personnel above the water and reducing underwater work.

[0108] Similarly, when the position of the movable sleeve 531 deviates from the design position, its position can be fine-tuned using the third telescopic connecting rod 55. 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 retracts, and the first eccentric wheel 561 and the second eccentric wheel 562 rotate clockwise around the hinge axis of the second ear plate 532. The movable sleeve 531 separates from the second steel pipe pile 30. By adjusting the length of the third telescopic connecting rod 55, the movable sleeve 531 moves along the second steel pipe pile 30, allowing for fine-tuning of the movable sleeve's position to reduce installation errors and meet design requirements.

[0109] In the construction method of this technical solution, the supporting diagonal rod assembly is assembled onto the steel pipe pile on land, eliminating the need for underwater welding and cutting processes, thereby improving construction efficiency and reducing costs.

[0110] The movable sleeve 531 is positioned above the mud surface on the second steel pipe pile 30, so that the hinge force-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 hinge rod 511 and the adjusting pipe 513 are both located above the water surface, facilitating operations by construction personnel above the water and reducing underwater work. Simultaneously, by adjusting the lengths 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 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 make the movable sleeve 531 clamp the second steel pipe pile 30, so as to achieve stable support for the steel pipe pile under the premise of meeting the design requirements.

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

[0114] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A construction method for a trestle bridge support pile connection system, characterized in that: The support pile connection system includes multiple vertically spaced steel pipe pile assemblies for supporting the connecting beam. Each steel pipe pile assembly includes three sequentially adjacent first steel pipe piles, second steel pipe piles, and third steel pipe piles. Supporting diagonal bracing assemblies for maintaining force balance are provided between the first steel pipe piles and the second steel pipe piles, and between the second steel pipe piles and the third steel pipe pile. The construction method includes the following steps: S1. Assemble the steel pipe pile assembly: According to the design requirements, the supporting diagonal rod assembly will be installed on the first steel pipe pile, the second steel pipe pile, and the third steel pipe pile on land. After the steel pipe pile assembly is assembled, it will be 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, drilled, lowered, and installed in sequence. After the first and second steel pipe piles are installed, the supporting diagonal bracing assembly between the second and first steel pipe piles is assembled. After the third steel pipe pile is installed, the supporting diagonal bracing assembly between the second and third steel pipe piles is assembled. S3. Install the connecting beam: Weld and fix the I-beam to the top of the installed steel casing, and install the connecting beam on the top of the I-beam to complete the installation of the trestle bridge support pile connection system; The supporting diagonal rod assembly includes: The first telescopic connecting rod has its upper end hinged to the upper end of the first steel pipe pile and its lower end hinged to the lower end of the second steel pipe pile. The second telescopic connecting rod has its upper end hinged to the upper end of the third steel pipe pile and its lower end hinged to the lower end of the second steel pipe pile. The lower end of the second steel pipe pile is fitted with a movable component, the movable component including a movable sleeve fitted on the second steel pipe pile and capable of moving up and down along the second steel pipe pile, the first telescopic connecting rod and the second telescopic connecting rod being symmetrically hinged to the left and right sides of the movable sleeve; The movable sleeve is positioned above the mud surface on the second steel pipe pile, so that the lower ends of both the first telescopic connecting rod and the second telescopic connecting rod are above the mud surface. The movable component further includes an adjustment structure capable of adjusting the vertical movement of the movable sleeve, the adjustment structure comprising: The first fixing sleeve is fixed to the upper end of the second steel pipe pile, and the first ear plate is fixedly provided on the left and right sides of the first fixing sleeve respectively. The movable sleeve is provided with second ear plates on its left and right sides respectively; A third telescopic connecting rod is provided between the first ear plate and the second ear plate on the same side. When the length of the third telescopic connecting rod is adjusted to increase, the movable sleeve moves downward along the second steel pipe pile; when the length of the third telescopic connecting rod is decreased, the movable sleeve moves upward along the second steel pipe pile. The upper end of the movable sleeve has symmetrical locking grooves extending vertically downward on both the left and right sides. An eccentric locking component is provided in the locking groove, and the eccentric locking component locks and positions the movable sleeve. The eccentric locking assembly includes: The eccentric wheel assembly consists of two sets, symmetrically distributed within the locking groove. Each set includes two eccentric wheels, a first eccentric wheel and a second eccentric wheel, arranged vertically. The second ear plate is disposed on both sides of the locking groove and is 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, and 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, and the first eccentric wheel and the second eccentric wheel rotate and clamp the second steel pipe pile; when it is necessary to adjust the position of the movable sleeve, the third telescopic connecting rod retracts, and the first eccentric wheel and the second eccentric wheel rotate in the opposite direction and separate from the second steel pipe pile. The length of the third telescopic connecting rod is then adjusted so that the movable sleeve moves along the second steel pipe pile.

2. The construction method of the trestle bridge support pile connection system according to claim 1, characterized in that, In step S1, the first fixed sleeve and the movable sleeve are fixed at the designed position 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. 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 to the second steel pipe pile.

3. The construction method of the trestle bridge support pile connection system according to claim 1, characterized in that, The upper end of the first steel pipe pile is provided with a second fixing sleeve, and the upper end of the third steel pipe pile is provided with a third fixing sleeve at the corresponding position. The second fixed sleeve is fixed with fourth ear plates on its left and right sides respectively, and the fourth ear plates are hinged to the upper end of the first telescopic connecting rod; the third fixed sleeve is fixed with fifth ear plates on its left and right sides respectively, and the fifth ear plates are hinged to the upper end of the second telescopic connecting rod to adjust the length of the second telescopic connecting rod.

4. The construction method of the trestle bridge support pile connection system according to claim 3, characterized in that, In step S1, the second fixing sleeve needs to be fixed at the designed position of the first steel pipe pile, and the third fixing sleeve needs to be fixed at the designed position of the third steel pipe pile.

5. The construction method of the trestle bridge support pile connection system according to claim 3, 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 fixed 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 fixed sleeve on the third steel pipe pile. Continue installing the second steel pipe pile of the next steel pipe pile assembly. The third steel pipe pile that has been installed is used 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.

6. The construction method of the trestle bridge support pile connection system according to claim 5, characterized in that, The first eccentric wheel includes an arc-shaped clamping part hinged to the second ear plate and a movable part 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.

7. The construction method of the trestle bridge support pile connection system according to claim 3, characterized in that, The first telescopic connecting rod includes: The first hinge rod has one end hinged to the fourth ear plate of the first fixed sleeve, and the other end is provided with a first threaded section; The second hinge rod has one end hinged to the third lug of the movable sleeve, and the other end is provided with a second threaded section; The regulating tube is a hollow tubular structure with internal threads. The two ends of the regulating tube are respectively connected to the first threaded section and the second threaded section. The second and third telescopic connecting rods have the same structure as the first telescopic connecting rod. In step S2, the lengths of the first and second telescopic connecting rods are adjusted by rotating the adjusting tube, thereby fine-tuning the pile spacing of the steel pipe piles; the eccentric locking assembly is released from locking the movable sleeve by rotating the adjusting tube of the third telescopic connecting rod, and the position of the movable sleeve is fine-tuned to meet the design requirements.

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