Steel pipe pile connecting device and steel pipe pile structure

Abstract

This utility model relates to the field of building construction technology, and provides a steel pipe pile connection device and a steel pipe pile structure. The steel pipe pile connection device includes a first hoop plate, a second hoop plate, and a limiting component. The first hoop plate is used to hold one side of the steel pipe pile; the shape of the second hoop plate matches the shape of the first hoop plate, one end of the first hoop plate is rotatably connected to one end of the second hoop plate, and the other end is connected to the other end of the second hoop plate by fasteners; the second hoop plate is used to hold the other side of the steel pipe pile; the limiting component passes through the first and second hoop plates and is used to limit the position of the first and second hoop plates relative to the steel pipe pile. The steel pipe pile connection device provided by this utility model solves the defect of the prior art that requires the customization of non-standard length flange pipe sections. By flexibly connecting steel pipe piles through the adjustable first hoop plate, second hoop plate, and limiting component, the limitations of prefabricated flanges can be avoided, construction flexibility can be improved, and costs can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a steel pipe pile connection device and a steel pipe pile structure. Background Technology

[0002] In pile foundation construction, steel pipe piles typically require multiple pile sections connected to meet design length requirements. Traditionally, steel pipe piles commonly use flange connections. This method involves welding flanges to the ends of the steel pipe piles during factory prefabrication, followed by on-site assembly via aligned flange bolt holes. Such flange-connected steel pipe piles require precise prefabrication of each pile section's length during the manufacturing phase. When design changes occur during construction or adjustments to the pile assembly length are needed, custom-made pipe sections with flanges of specific lengths are necessary. However, in actual construction, complex geological conditions or changing project requirements often necessitate temporary adjustments to the overall length of the steel pipe piles. This limitation forces construction companies to customize non-standard length flanged pipe sections, resulting in delays and increased costs. Utility Model Content

[0003] The first aspect of this utility model provides a steel pipe pile connection device to solve the defect of the prior art that requires the re-customization of non-standard length flange pipe sections. By flexibly connecting steel pipe piles through adjustable first hoop, second hoop and limiting components, the limitations of prefabricated flanges can be avoided, construction flexibility can be improved and costs can be reduced.

[0004] The second aspect of this utility model provides a steel pipe pile structure.

[0005] The steel pipe pile connection device provided by this utility model includes: The first hoop plate is used to hold the steel pipe pile to one side; The second hoop plate has a shape that matches that of the first hoop plate. One end of the first hoop plate is rotatably connected to one end of the second hoop plate, and the other end of the first hoop plate is connected to the other end of the second hoop plate by fasteners. The second hoop plate is used to hold the steel pipe pile on the other side. A limiting component is inserted through the first hoop plate and the second hoop plate, and the limiting component is used to limit the position of the first hoop plate and the second hoop plate relative to the steel pipe pile.

[0006] According to the steel pipe pile connection device provided by this utility model, the limiting component includes: A first limiting member is inserted through the first hoop plate and the second hoop plate, and the first limiting member is used to limit the position of the first hoop plate and the second hoop plate relative to one side of the steel pipe pile; The second limiting member is inserted through the first hoop plate and the second hoop plate, and the second limiting member is used to limit the position of the first hoop plate and the second hoop plate relative to the steel pipe pile on the other side.

[0007] According to the steel pipe pile connection device provided by this utility model, multiple first limiting members are provided, and the multiple first limiting members are evenly spaced along the circumference of the first hoop plate. And / or, multiple second limiting members are provided, and the multiple second limiting members are evenly spaced along the circumference of the first hoop.

[0008] According to the steel pipe pile connection device provided by this utility model, the first limiting member includes: A first tie rod is inserted through the first hoop plate and the second hoop plate, and the first tie rod is used to pass through the steel pipe pile; A first nut is provided at both ends of the pull rod, and the first nut is used to limit the position of the first pull rod relative to the first clamp and the second clamp.

[0009] According to the steel pipe pile connection device provided by this utility model, the second limiting member includes: The second tie rod passes through the first hoop plate and the second hoop plate, and the second tie rod is used to pass through the steel pipe pile; The second nut is located at both ends of the second pull rod and is used to limit the position of the second pull rod relative to the first clamp and the second clamp.

[0010] The steel pipe pile connection device provided by this utility model further includes: The first annular reinforcing member is disposed on the outside of the first hoop plate and extends along the circumference of the first hoop plate; And / or, a second annular reinforcement is disposed on the outside of the second hoop and extends circumferentially along the second hoop.

[0011] The steel pipe pile connection device provided by this utility model further includes a reinforcing steel plate, which is disposed on the outside of the first hoop and / or the outside of the second hoop, and the plane of the reinforcing steel plate is parallel to the cross section of the first hoop.

[0012] According to the steel pipe pile connection device provided by this utility model, four reinforcing steel plates are provided, and two of the four reinforcing steel plates are symmetrically arranged on both sides of the first hoop plate along the center line of the first hoop plate. Two of the four reinforcing steel plates are symmetrically arranged on both sides of the second hoop along the center line of the second hoop.

[0013] The steel pipe pile connection device provided by this utility model also includes a plurality of fasteners, which are inserted through the first hoop plate and the second hoop plate, and the plurality of fasteners are arranged at radial intervals along the first hoop plate.

[0014] The steel pipe pile structure provided by this utility model includes the steel pipe pile connection device described in any of the preceding claims.

[0015] The steel pipe pile connection device provided by this utility model simplifies the installation steps of steel pipe pile connection by using a rotating first hoop plate and a second hoop plate in conjunction with a detachable limiting component, thus avoiding the equipment and labor required by traditional welding processes. The cooperation between the limiting component and the steel pipe pile positioning structure effectively constrains the relative displacement of the connection parts, improving connection stability.

[0016] Compared to existing technologies that use welding or flange bolt connections, the steel pipe pile connection device provided by this utility model eliminates the need for pre-welding connectors onto the steel pipe pile, reducing damage to the steel pipe pile structure. It also facilitates disassembly and reuse, making it suitable for temporary support projects or scenarios requiring pile position adjustments. Furthermore, the modular design of the hoop plates and limiting components allows for adaptation to steel pipe piles of different diameters. During use, the first hoop plate, second hoop plate, and limiting components can be selected based on the steel pipe pile, effectively reducing the manufacturing cost of specialized connectors and the overall construction period. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an elevation layout diagram of the steel pipe pile connection device provided in this embodiment of the utility model.

[0019] Figure 2 This is a top view of the steel pipe pile connection device provided in this embodiment of the utility model.

[0020] Figure label: 10: Steel pipe pile connection device; 20: Steel pipe pile; 100: First hoop plate; 200: Second hoop plate; 300: Limiting component; 310: First limiting member; 311: First tie rod; 312: First nut; 320: Second limiting member; 321: Second tie rod; 322: Second nut; 400: First annular reinforcement; 500: Second annular reinforcement; 600: Reinforcing steel plate; 700: Fastener. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0023] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0025] Figure 1 This is an elevation layout diagram of the steel pipe pile connection device provided in this embodiment of the utility model; Figure 2 This is a top view of the steel pipe pile connection device provided in this embodiment of the utility model.

[0026] See Figure 1This utility model provides a steel pipe pile connection device 10, which includes a first hoop plate 100, a second hoop plate 200, and a limiting component 300. Both the first hoop plate 100 and the second hoop plate 200 are arc-shaped plates that match the shape of the outer surface of the steel pipe pile 20, such as a semi-circular or larger arc-shaped structure. One end of the first hoop plate 100 and the corresponding end of the second hoop plate 200 are connected by a rotating connection structure to achieve opening and closing. For example, both ends are provided with coaxial through holes and hinged by a pin, or directly connected by a hinge with a rotating shaft.

[0027] The other ends of both are fastened together, such as with bolt and nut assemblies, snap-fit ​​structures, or locking clamps, to fix the hoop plates after closure. In the closed state, the first hoop plate 100 and the second hoop plate 200 together hold the circumferential outer surface of the steel pipe pile 20. The limiting component 300 penetrates the sidewalls of the first hoop plate 100 and the second hoop plate 200, for example, by using a limiting pin, positioning bolt, or plug-in stop, and is inserted into a pre-set positioning hole or slot of the steel pipe pile 20. In some optional embodiments, the limiting component 300 can also penetrate the first hoop plate 100, the steel pipe pile 20, and the second hoop plate 200 simultaneously. Specifically, the setting can be adapted according to the actual situation. The limiting component 300 is used to limit the axial displacement and circumferential rotation between the first hoop plate 100 and the second hoop plate 200 and the steel pipe pile 20.

[0028] In one specific embodiment, both the first hoop plate 100 and the second hoop plate 200 are semi-circular steel plates. Ear plates with through holes are welded to their left ends, forming a rotatable connection via pins. Flange plates with through holes are welded to their right ends, and bolts are used to pass through the flange plates and tighten nuts for secure fastening. The limiting component 300 consists of two limiting pins, which pass through the through holes on the upper and lower sides of the hoop plate and are inserted into the positioning holes at the ends of the steel pipe piles 20. During installation, the operator places the first hoop plate 100 and the second hoop plate 200, in their unfolded state, onto the joint of the two steel pipe piles 20 to be connected. After closing the hoop plates, radial clamping force is applied using fasteners 700 to ensure a tight fit between the hoop plates and the outer surface of the steel pipe piles 20. The limiting component 300 is then inserted into the corresponding through holes or slots of the hoop plates and steel pipe piles 20. For disassembly, the hoop plates are separated by loosening the fasteners 700 and removing the limiting component 300, allowing for reuse of the device.

[0029] See Figure 1 It is understood that the steel pipe pile connecting device 10 provided in this embodiment of the present invention simplifies the installation steps when connecting the steel pipe pile 20 by means of the rotatable connection of the first hoop plate 100 and the second hoop plate 200 and the cooperation of the detachable limiting component 300, thus avoiding the equipment and labor required by traditional welding processes. The cooperation between the limiting component 300 and the positioning structure of the steel pipe pile 20 can effectively constrain the relative displacement of the connecting parts and improve the connection stability.

[0030] Compared to existing technologies that use welding or flange bolt connections, the steel pipe pile connection device 10 provided in this embodiment of the invention eliminates the need for pre-welding connectors to the steel pipe pile 20, reducing damage to the structure of the steel pipe pile 20. It also facilitates disassembly and reuse, making it suitable for temporary support projects or scenarios requiring pile position adjustments. Furthermore, the modular design of the hoop plate and limiting component 300 can accommodate steel pipe piles 20 of different diameters. In use, the first hoop plate 100, the second hoop plate 200, and the limiting component 300 can be selected based on the steel pipe pile 20, effectively reducing the manufacturing cost of specialized connectors and the overall construction period.

[0031] Continue reading Figure 1 In an optional embodiment of this utility model, the limiting component 300 includes an independently configured first limiting member 310 and a second limiting member 320. The first limiting member 310 passes through the first hoop 100 and the second hoop 200 and is used to limit the displacement of the connecting device relative to one side of the steel pipe pile 20. The second limiting member 320 also passes through the first hoop 100 and the second hoop 200, but acts on the other side of the steel pipe pile 20, thereby realizing the independent limiting of the first hoop 100 and the second hoop 200 by the two sides of the steel pipe pile 20.

[0032] Specifically, the first limiting member 310 and the second limiting member 320 can adopt the same or different structural forms. For example, the first limiting member 310 is a pin that is inserted into the positioning hole at the end of the upper steel pipe pile 20 and is clearance-fitted with the through holes on the first hoop plate 100 and the second hoop plate 200; the second limiting member 320 is a pin of the same type that is inserted into the positioning hole of the lower steel pipe pile 20 and is clearance-fitted with the through holes on the first hoop plate 100 and the second hoop plate 200; the two pins are installed independently and the insertion depth can be adjusted to accommodate the deviation when the steel pipe piles 20 are connected.

[0033] In another optional embodiment, the first limiting member 310 is a limiting protrusion connected to the inner wall of the first hoop plate 100 and the second hoop plate 200, and the limiting protrusion is embedded in the groove of the outer wall of the upper steel pipe pile 20; the second limiting member 320 is a through bolt, whose screw passes through the through hole of the hoop plate and is screwed into the pre-set threaded hole of the lower steel pipe pile 20, and is fixed by tightening the nut. Of course, the second limiting member 320 can also be a limiting protrusion similar to the first limiting member 310.

[0034] During installation, the operator first places the connecting device onto the joint of the two steel pipe piles 20, closes and tightens the clamp, and then installs the first limiting member 310 and the second limiting member 320 respectively. For example, in the first example, the upper pin is first inserted into the positioning hole of the upper steel pipe pile 20, and then the lower pin is inserted into the positioning hole of the lower steel pipe pile 20. The two pins independently bear the axial constraint of the corresponding steel pipe piles 20. In the second example, the upper protrusion is embedded in the groove of the steel pipe pile 20 to achieve circumferential limiting, and the lower bolt provides axial fixation through threaded connection. During disassembly, the device can be separated by removing the limiting members on both sides in sequence.

[0035] It is understood that the steel pipe pile connection device 10 provided in this embodiment of the present invention, by setting independent first limiting member 310 and second limiting member 320, can accurately position the steel pipe piles 20 on both sides respectively, which can avoid the stress concentration problem caused by the docking deviation of the steel pipe piles 20 on both sides due to the traditional single limiting structure.

[0036] Compared to solutions using only one-sided limiting, this design improves the adaptability of the connection device by using independent limiting on both sides, making it suitable for complex working conditions with construction errors or terrain undulations. Furthermore, the limiting components on both sides can be selected with different structural forms (such as a combination of pins and bolts), which can expand the device's applicability. For example, the upper side can use a quick-release pin, and the lower side can use an adjustable bolt, thus balancing installation efficiency and positioning accuracy.

[0037] In an optional embodiment of this utility model, there are multiple first limiting members 310 and / or second limiting members 320, which are evenly spaced along the circumference of the first hoop plate 100. When multiple first limiting members 310 are provided, for example, at least two first limiting members 310 are provided circumferentially in the hoop plate area corresponding to the upper steel pipe pile 20, and the central angles between each limiting member are equal; when multiple second limiting members 320 are provided, for example, multiple second limiting members 320 are provided in the same manner in the hoop plate area corresponding to the lower steel pipe pile 20; in an optional embodiment of this utility model, multiple first limiting members 310 or multiple second limiting members 320 can be provided individually, or multiple first limiting members 310 and multiple second limiting members 320 can be provided simultaneously.

[0038] In one optional embodiment, the first limiting member 310 consists of three pins evenly distributed at 120° intervals along the circumference of the first hoop 100, which are respectively inserted into the three positioning holes of the upper steel pipe pile 20; the second limiting member 320 consists of two through bolts symmetrically arranged at 180° intervals along the circumference of the first hoop 100, which are screwed into the threaded holes of the lower steel pipe pile 20.

[0039] In another optional embodiment, the first limiting member 310 and the second limiting member 320 both adopt four limiting protrusions. Each protrusion is connected to the inner wall of the corresponding hoop plate at 90° intervals along the circumference of the first hoop plate 100, and is embedded in the grooves of the steel pipe piles 20 on both sides respectively.

[0040] During installation, operators assemble the components according to the preset number and positions of the limiting parts. For example, in the first example, three pins are first inserted into the positioning holes of the upper steel pipe pile 20 in sequence, and then two through bolts are passed through the through holes of the hoop plate and screwed into the threaded holes of the upper steel pipe pile 20. Symmetrical force is applied to ensure that each limiting part bears the load evenly. During disassembly, the limiting parts are removed in reverse order. For example, in the second example, the engagement of the four limiting protrusions with the grooves of the steel pipe pile 20 must ensure that the protrusions are aligned with the grooves when the hoop plate is closed. The angle is adjusted by rotating the hoop plate until the protrusions are fully embedded, thereby achieving multi-point synchronous limiting.

[0041] It is understood that the steel pipe pile connection device 10 provided in this embodiment of the present invention can distribute the axial load and torque of the steel pipe pile 20 to multiple contact points by uniformly arranging multiple limiting members along the circumference, thereby avoiding connection failure caused by excessive local stress due to single-point limiting.

[0042] Compared to single-constraint designs, the multi-constraint design effectively improves the torsional resistance and load uniformity of the connection, making it suitable for large-diameter steel pipe piles 20 or high-torque conditions. Furthermore, the spacing angle of the constrainers can be adjusted according to actual needs; for example, a denser distribution of constrainers can be used in environments with frequent vibrations, thereby enhancing connection stability. This modular design expands the applicability of the device; for instance, it can be adapted to steel pipe piles 20 of different diameters by increasing or decreasing the number of constrainers without redesigning the overall structure.

[0043] See Figure 1 and Figure 2 In an optional embodiment of this utility model, the first limiting member 310 is composed of a first pull rod 311 and a first nut 312. The first pull rod 311 passes through the side wall of the first hoop 100, the second hoop 200 and the steel pipe pile 20. Its length is designed according to the diameter of the steel pipe pile 20 and the thickness of the hoop. The surface of the rod can be provided with a threaded or smooth structure. The first nut 312 is disposed at both ends of the first pull rod 311 and is used to fix the position of the pull rod by tightening or pressing to prevent the pull rod from moving relative to the hoop.

[0044] In one optional embodiment, the first tie rod 311 is a double-ended bolt, with its body passing through the through holes of the first hoop plate 100 and the second hoop plate 200, and through the positioning hole of the upper steel pipe pile 20. The nut is a lock nut, which prevents loosening after being tightened at both ends of the tie rod through a double nut interlocking structure.

[0045] In another optional embodiment, the first tie rod 311 is a smooth rod with a stepped shoulder, its small-diameter section inserted into the positioning hole of the steel pipe pile 20, and its large-diameter section snapped into the through hole of the hoop plate. The nut is a quick-tightening wing nut, which can be quickly fixed by screwing it with a handle.

[0046] During installation, the operator sequentially passes the first tie rod 311 through the first hoop plate 100, the positioning hole of the steel pipe pile 20, and the second hoop plate 200. Then, the first nuts 312 are installed at both ends of the tie rod and a pre-tightening force is applied. For example, in the first example, after the double-ended bolt is inserted, tightening the nuts on both sides symmetrically allows the hoop plate to fit tightly against the steel pipe pile 20. In the second example, after the smooth rod is inserted into the positioning hole, the wing nut presses against the outer surface of the hoop plate, allowing for quick locking via leverage. During disassembly, loosening the nuts and pulling out the tie rod releases the limiting mechanism.

[0047] It is understood that the steel pipe pile connection device 10 provided in this embodiment of the present invention, through the combination design of the first tie rod 311 and the first nut 312, can realize the adjustable fixation of the limiting component 300, which can avoid the installation difficulties caused by the tolerance of the traditional pin.

[0048] Compared to the limit block solution, the tie rod type limit component can adapt to different wall thicknesses of the steel pipe pile 20 by adjusting the tightness of the nut, while also facilitating disassembly and maintenance. Furthermore, the structure of the tie rod penetrating the steel pipe pile 20 can evenly distribute axial loads, reducing deformation of the connector due to unilateral force, making it suitable for conditions subjected to alternating loads. This design can also adapt to various specifications of steel pipe piles 20 by replacing tie rods of different lengths, reducing the development cost of dedicated connectors.

[0049] See Figure 1 and Figure 2 In an optional embodiment of this utility model, the second limiting member 320 is composed of a second tie rod 321 and a second nut 322. The second tie rod 321 passes through the side wall of the first hoop 100, the second hoop 200 and the steel pipe pile 20. Its length is designed according to the diameter of the steel pipe pile 20 and the thickness of the hoop. The surface of the rod can be provided with a threaded or smooth structure. The second nut 322 is disposed at both ends of the second tie rod 321 and is used to fix the position of the tie rod by tightening or pressing to prevent the tie rod from moving relative to the hoop.

[0050] In one optional embodiment, the second tie rod 321 is a double-ended bolt, with its body passing through the through holes of the first hoop plate 100 and the second hoop plate 200, and through the positioning hole of the lower steel pipe pile 20. The nut is a lock nut, which prevents loosening after being tightened at both ends of the tie rod through a double nut interlocking structure.

[0051] In another optional embodiment, the second tie rod 321 is a smooth rod with a stepped shoulder, its small-diameter section inserted into the positioning hole of the steel pipe pile 20, and its large-diameter section snapped into the through hole of the hoop plate. The nut is a quick-tightening wing nut, which can be quickly fixed by screwing it with a handle.

[0052] During installation, the operator sequentially passes the second tie rod 321 through the first hoop plate 100, the positioning hole of the steel pipe pile 20, and the second hoop plate 200. Then, the second nuts 322 are installed at both ends of the tie rod and a pre-tightening force is applied. For example, in the first example, after the double-ended bolt is inserted, tightening the nuts on both sides symmetrically allows the hoop plate to fit tightly against the steel pipe pile 20. In the second example, after the smooth rod is inserted into the positioning hole, the wing nut presses against the outer surface of the hoop plate, allowing for quick locking via leverage. During disassembly, loosening the nuts and pulling out the tie rod releases the limiting mechanism.

[0053] It is understood that the steel pipe pile connection device 10 provided in this embodiment of the present invention, through the combination design of the second tie rod 321 and the second nut 322, can realize the adjustable fixation of the limiting component 300, which can avoid the installation difficulties caused by the tolerance of the traditional pin.

[0054] Compared to the limit block solution, the tie rod type limit component can adapt to different wall thicknesses of the steel pipe pile 20 by adjusting the tightness of the nut, while also facilitating disassembly and maintenance. Furthermore, the structure of the tie rod penetrating the steel pipe pile 20 can evenly distribute axial loads, reducing deformation of the connector due to unilateral force, making it suitable for conditions subjected to alternating loads. This design can also adapt to various specifications of steel pipe piles 20 by replacing tie rods of different lengths, reducing the development cost of dedicated connectors.

[0055] Continue reading Figure 1 and Figure 2 In an optional embodiment of the present invention, the steel pipe pile connecting device 10 further includes a first annular reinforcing member 400 and / or a second annular reinforcing member 500. Specifically, when the first annular reinforcing member 400 is provided, the first annular reinforcing member 400 is disposed on the outer surface of the first hoop 100 and extends circumferentially thereon. The first annular reinforcing member 400 is used to enhance the bending stiffness of the first hoop 100. When the second annular reinforcing member 500 is provided, the second annular reinforcing member 500 is disposed on the outer surface of the second hoop 200 and extends circumferentially thereon. The second annular reinforcing member 500 is used to enhance the bending stiffness of the second hoop 200. In an optional embodiment of the present invention, annular reinforcing members may be provided only on the first hoop 100 or the second hoop 200, or they may be provided on both hoop plates simultaneously.

[0056] In one optional embodiment, the first annular reinforcing member 400 is an arc-shaped steel plate with an arc that matches the outer contour of the first hoop 100. It is welded to the outer side of the first hoop 100 and covers the entire length of the first hoop 100 circumferentially. The second annular reinforcing member 500 can be a structure similar to the first annular reinforcing member 400, or it can be a segmented angle steel, with multiple segments welded at equal intervals along the outer circumferential direction of the second hoop 200. Of course, the first annular reinforcing member 400 can also be a segmented angle steel.

[0057] In another optional embodiment, the first annular reinforcing member 400 and the second annular reinforcing member 500 are both annular channel steels, which can be fixed to the outside of the corresponding hoop plate by bolts. The opening of the channel steel faces the outer surface of the hoop plate and extends continuously in the circumferential direction to form a closed annular structure.

[0058] During installation, the connection method between the annular reinforcing member and the hoop plate is adjusted according to different embodiments. In the first example, after the hoop plate is closed and tightened, the arc-shaped steel plate is welded to the outside of the first hoop plate 100, and the segmented angle steel is welded to the outside of the second hoop plate 200, with the welding position avoiding the rotational connection area of ​​the hoop plate. Of course, in an optional embodiment of this utility model, the first annular reinforcing member 400 and the second annular reinforcing member 500 can also be pre-positioned on the outside of the first hoop plate 100 and the second hoop plate 200. In the second example, holes can be pre-drilled on the outside of the hoop plate, and the channel steel can be fixed to the outer surface of the hoop plate with bolts.

[0059] It is understood that the steel pipe pile connection device 10 provided in this embodiment of the present invention effectively improves the overall structural strength of the hoop plate by setting a circumferentially extending annular reinforcing member. Under high load or vibration conditions, it can effectively prevent the plastic deformation of the first hoop plate 100 and the second hoop plate 200 caused by long-term stress.

[0060] Compared to traditional hoop plate solutions without reinforcements, the introduction of ring-shaped reinforcements allows the connecting device to withstand greater bending and torque moments, extending its service life. Furthermore, segmented or detachable reinforcement designs (such as bolted-fixed channel steel) facilitate later maintenance or replacement, reducing the risk of overall scrapping due to localized damage. This modular reinforcement structure also allows for adjustments to the number and size of reinforcements according to actual engineering needs; for example, increasing the number of reinforcements can improve the adaptability of the device.

[0061] Continue reading Figure 1 and Figure 2In an optional embodiment of this utility model, the steel pipe pile connecting device 10 further includes a reinforcing steel plate 600. The reinforcing steel plate 600 can be set separately on the outside of the first hoop 100 or the second hoop 200, or simultaneously on the outside of both hoop plates. At the same time, the plane where the reinforcing steel plate 600 is located is parallel to the cross-section of the first hoop 100, that is, the extension direction of the reinforcing steel plate 600 is perpendicular to the axial direction of the steel pipe pile 20. The reinforcing steel plate 600 can be fixed to the outside of the hoop by welding, bolting or snapping.

[0062] During installation, after the hoop plates are closed and tightened, the reinforcing steel plate 600 can be attached to the outer surface of the first hoop plate 100 and continuously welded along its axial and circumferential directions, with the welding trajectory avoiding the through hole of the limiting component 300 on the hoop plate; similarly, the second hoop plate 200 can also be installed in the opposite way. In an optional embodiment of this utility model, the reinforcing steel plate 600 can also be pre-positioned on the outer side of the first hoop plate 100 and the second hoop plate 200, which can be adapted according to the actual situation.

[0063] It is understood that the steel pipe pile connection device 10 provided in this embodiment of the present invention effectively improves the bending stiffness of the hoop plate under axial force by adding a reinforcing steel plate 600 parallel to the cross section of the hoop plate, and can avoid the hoop plate torsion deformation caused by external load.

[0064] Compared to designs without reinforcement, the combination of steel plates and hoop plates improves the overall stability of the connection points without significantly increasing the weight of the device. Furthermore, the detachable bolted reinforcement steel plates 600 allow for adjustments to their number or position based on actual operating conditions; for example, increasing the number of plates can accommodate asymmetric loads, thereby enhancing the device's adaptability. This modular design also reduces maintenance costs; when a local steel plate is damaged, only the corresponding component needs to be replaced, without needing to replace the entire hoop plate.

[0065] See Figure 1 and Figure 2 In an optional embodiment of this utility model, eight reinforcing steel plates 600 are provided, of which four reinforcing steel plates 600 are symmetrically arranged on the outer side of the first hoop 100 along the center line, and the other four reinforcing steel plates 600 are symmetrically arranged on the outer side of the second hoop 200 along the center line in the same manner; the planes on which the eight reinforcing steel plates 600 are located are all parallel to the cross-sections of the corresponding hoops.

[0066] It is understood that the steel pipe pile connection device 10 provided in this embodiment of the present invention, through the symmetrical arrangement of eight reinforcing steel plates 600 along the centerline, improves the overall rigidity of the hoop plate while ensuring the balance of load transfer.

[0067] Compared to asymmetrical reinforcement structures, this design effectively counteracts eccentric bending moments under complex working conditions, reducing the risk of connection failure due to uneven stress. Furthermore, the symmetrical arrangement makes the installation position of the reinforcing steel plate 600 predictable, simplifying the construction positioning process. For the detachable reinforcing steel plate 600, operators can quickly adjust the number or position of the steel plates according to actual needs, thereby expanding the applicability of the device.

[0068] See Figure 1 and Figure 2 In an optional embodiment of this utility model, a plurality of fasteners 700 are also included. Each fastener 700 passes through the first hoop plate 100 and the second hoop plate 200, and the plurality of fasteners 700 are spaced apart along the radial direction of the first hoop plate 100. The fasteners 700 can be common mechanical connectors such as bolts, rivets, and pins. Taking bolts as an example, bolt holes are opened at corresponding positions on the first hoop plate 100 and the second hoop plate 200. After the bolt passes through the bolt holes of the two hoop plates, it is locked by nuts, so that the two hoop plates are pulled tight in the radial direction and fit against the outer wall of the steel pipe pile 20.

[0069] In the actual installation process, the first hoop 100 and the second hoop 200 are first opened by rotating the connecting end and fitted onto the outside of the steel pipe pile 20 to be connected. The relative positions of the two hoops are adjusted to align the bolt holes. Then, multiple bolts are sequentially passed through the radially spaced bolt holes, inserted from the outside of the first hoop 100 and through the corresponding holes of the second hoop 200. Finally, the nuts are tightened at the ends of the bolts. Because the fasteners 700 are arranged radially at intervals, the clamping force generated when tightening the nuts is evenly transmitted to various areas of the first hoop 100 and the second hoop 200, so that the two hoops fit tightly against the surface of the steel pipe pile 20, forming a ring-shaped clamping structure.

[0070] It is understood that the steel pipe pile connecting device 10 provided in this embodiment of the present invention, with multiple fasteners 700 arranged radially at intervals, effectively enhances the connection strength between the first hoop 100 and the second hoop 200 by increasing the number of connection points and distributing the force evenly. This allows the two to more tightly clamp the steel pipe pile 20, reducing the risk of local loosening or deformation caused by uneven clamping force. Compared to schemes that only set a single or a small number of fasteners 700, the multiple fasteners 700 distributed at intervals can form a multi-point constraint structure, effectively improving the shear and torsional resistance of the connecting device and ensuring stability under complex working conditions such as high-frequency vibration and impact loads.

[0071] See Figure 1 and Figure 2The second aspect of this utility model provides a steel pipe pile 20 structure, which includes the steel pipe pile connecting device 10 and steel pipe pile 20 as described in any of the foregoing embodiments. The steel pipe pile connecting device 10 is connected to the splice of two steel pipe piles 20. It can be understood that the steel pipe pile 20 structure provided in this embodiment also has the technical effects of the steel pipe pile connecting device 10 as described in any of the foregoing embodiments. For specific technical effects, please refer to the above description, which will not be repeated here.

[0072] It should be noted that the technical solutions in the various embodiments of this utility model can be combined with each other, but the basis for such combination is that they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist, that is, it is not within the protection scope of this utility model.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A steel pipe pile connection device, characterized in that, include: The first hoop plate (100) is used to hold the steel pipe pile (20) on one side; The second hoop (200) has a shape that matches the shape of the first hoop (100). One end of the second hoop (200) is rotatably connected to one end of the first hoop (100), and the other end is fastened to the other end of the first hoop (100). The second hoop (200) is used to hold the steel pipe pile (20) on the other side. A limiting component (300) is inserted through the first hoop (100) and the second hoop (200), the limiting component (300) being used to limit the position of the first hoop (100) and the second hoop (200) relative to the steel pipe pile (20).

2. The steel pipe pile connection device according to claim 1, characterized in that, The limiting component (300) includes: A first limiting member (310) is inserted through the first hoop plate (100) and the second hoop plate (200). The first limiting member (310) is used to limit the position of the first hoop plate (100) and the second hoop plate (200) relative to the steel pipe pile (20) on one side. The second limiting member (320) is inserted through the first hoop plate (100) and the second hoop plate (200). The second limiting member (320) is used to limit the position of the first hoop plate (100) and the second hoop plate (200) relative to the steel pipe pile (20) on the other side.

3. The steel pipe pile connection device according to claim 2, characterized in that, Multiple first limiting members (310) are provided, and the multiple first limiting members (310) are evenly spaced along the circumference of the first hoop plate (100); And / or, a plurality of second limiting members (320) are provided, and the plurality of second limiting members (320) are evenly spaced along the circumference of the first hoop (100).

4. The steel pipe pile connection device according to claim 2, characterized in that, The first limiting member (310) includes: The first tie rod (311) is inserted through the first hoop plate (100) and the second hoop plate (200), and the first tie rod (311) is used to insert through the steel pipe pile (20). A first nut (312) is provided at both ends of the pull rod. The first nut (312) is used to limit the position of the first pull rod (311) relative to the first clamp plate (100) and the second clamp plate (200).

5. The steel pipe pile connection device according to claim 2, characterized in that, The second limiting member (320) includes: The second tie rod (321) is inserted through the first hoop plate (100) and the second hoop plate (200), and the second tie rod (321) is used to be inserted through the steel pipe pile (20). The second nut (322) is provided at both ends of the second pull rod (321). The second nut (322) is used to limit the position of the second pull rod (321) relative to the first clamp plate (100) and the second clamp plate (200).

6. The steel pipe pile connection device according to any one of claims 1 to 5, characterized in that, Also includes: The first annular reinforcing member (400) is disposed on the outside of the first hoop plate (100) and extends along the circumference of the first hoop plate (100); And / or, a second annular reinforcement (500) is provided on the outside of the second hoop (200) and extends circumferentially along the second hoop (200).

7. The steel pipe pile connection device according to any one of claims 1 to 5, characterized in that, It also includes a reinforcing steel plate (600), which is disposed on the outside of the first hoop (100) and / or the outside of the second hoop (200), and the plane of the reinforcing steel plate (600) is parallel to the cross section of the first hoop (100).

8. The steel pipe pile connection device according to claim 7, characterized in that, Eight reinforcing steel plates (600) are provided, and four of the eight reinforcing steel plates (600) are symmetrically arranged on both sides of the first hoop plate (100) along the center line of the first hoop plate (100); Four of the eight reinforcing steel plates (600) are symmetrically arranged on both sides of the second hoop (200) along the center line of the second hoop (200).

9. The steel pipe pile connection device according to any one of claims 1 to 5, characterized in that, It also includes a plurality of fasteners (700) that pass through the first hoop (100) and the second hoop (200) and are arranged at radial intervals along the first hoop (100).

10. A steel pipe pile structure, characterized in that, Includes the steel pipe pile connection device (10) as described in any one of claims 1 to 9.

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