Steel-concrete composite pile
By setting an inclined guide surface in the steel-concrete composite pile to guide the alignment of the steel pile section and the concrete pile section, the alignment problem when splicing steel pipe piles and prestressed concrete pipe piles is solved, and the durability, bending resistance and compressive strength of marine engineering pile foundations are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-04-07
AI Technical Summary
Alignment between steel pipe piles and prestressed concrete pipe piles is difficult during splicing, which makes the prestressed concrete pipe piles prone to impact damage, affecting the durability of marine engineering structures.
A first guide and a second guide are respectively installed on the concrete pile section and the steel pile section. The guide surface is designed as an inclined structure. The steel pile section and the concrete pile section are aligned by the contact of the guide surfaces, which reduces the difficulty of docking and avoids collisions.
This effectively reduces the difficulty of connecting steel pile sections with concrete pile sections, avoids collisions between pile bodies, and enhances the connection strength and durability of composite piles.
Smart Images
Figure CN224092477U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine photovoltaic pile technology, and in particular to a steel-concrete composite pile. Background Technology
[0002] Offshore photovoltaic (PV) power plants, as an emerging renewable energy generation method, are gradually gaining attention. Compared with onshore PV power plants, offshore PV power plants have multiple advantages, including abundant sunlight, high resource utilization, high power generation efficiency, and reduced land occupation. Currently, the pile foundations of offshore PV power plants mostly use prestressed concrete pipe piles or steel pipe piles. However, compared to onshore systems, the pile foundations of offshore PV power plants are frequently subjected to wave and current forces, posing a significant challenge to the bending resistance of the pile foundations. As a key component of the load-bearing structure, the performance of the pile foundation directly determines the safety and durability of the entire structure. In marine engineering, generally, the larger the diameter and the thicker the wall of the pile foundation structure, the stronger its bending, compressive, and horizontal bearing capacity. Under the same requirements for bending, compressive, and horizontal bearing capacity, prestressed concrete pipe piles are cheaper than steel pipe piles, but their bending resistance and corrosion resistance are weaker. Steel pipe piles have stronger bending and corrosion resistance than prestressed concrete pipe piles, but they consume more steel and are less economical. Therefore, compared with single prestressed concrete pipe piles or steel pipe piles, steel-concrete composite piles formed by splicing concrete pile sections and steel pipe piles have better comprehensive performance.
[0003] However, in actual construction, due to the different pile structures and large volume of prestressed concrete pipe piles and steel pipe piles, it is difficult for the steel pipe pile to align with the prestressed concrete pipe pile during the docking process of the two piles. The steel pipe pile is prone to directly impacting the prestressed concrete pipe pile, resulting in damage to the prestressed concrete pipe pile. This structural damage not only weakens the vertical bearing capacity of the pile foundation, but may also cause corrosion of the steel reinforcement inside the pile, seriously affecting the long-term durability of the marine engineering structure. Utility Model Content
[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by this utility model is to propose a steel-concrete composite pile to solve the problem that the prestressed concrete pipe pile body is easily damaged by collision when the steel pipe pile and the prestressed concrete pipe pile are spliced in the prior art due to the difficulty in alignment.
[0005] The technical solution adopted by this utility model to solve its technical problem is a steel-concrete composite pile, which includes a concrete pile section and a steel pile section. The composite pile also includes a first guide member and a second guide member. One of the first guide member and the second guide member is installed at the end of the concrete pile section, and the other is installed at the end of the steel pile section.
[0006] The first guide member has a first guide surface, and the second guide member has a second guide surface; wherein, the first guide surface gradually tilts outward or inward along the direction of the steel pile section toward the concrete pile section, and the second guide surface gradually tilts inward or outward along the direction of the concrete pile section away from the steel pile section, and the first guide surface and the second guide surface are adapted to each other so that the steel pile section is axially aligned with the concrete pile section.
[0007] Furthermore, the tilt angle of the first guide surface is the same as the tilt angle of the second guide surface.
[0008] Furthermore, when the steel pile section is connected to the concrete pile section, the first guide surface and the second guide surface are in contact.
[0009] Furthermore, the first guide surface and the second guide surface are arranged in annular or conical shapes.
[0010] Furthermore, the steel pile segment includes a first pile body and a first end plate connected to the first pile body, and the concrete pile segment includes a second pile body and a second end plate connected to the second pile body, wherein the first end plate can be connected to the second end plate;
[0011] One of the first guide member and the second guide member is disposed on the first end plate, and the other is disposed on the second end plate.
[0012] Furthermore, the first guide member is provided on the first end plate, and the outer peripheral wall of the first guide member gradually slopes inward along the direction from the first end plate toward the second end plate to form the first guide surface.
[0013] Furthermore, the first guide member is arranged in a conical or frustum shape.
[0014] Furthermore, the cross-section of the first guide member is arranged in a cross shape.
[0015] Furthermore, a second guide member is provided on the second end plate, and a guide hole is provided in the middle of the second guide member. The inner wall of the guide hole gradually slopes inward in the direction away from the first end plate to form the second guide surface.
[0016] Furthermore, an elastic buffer plate is provided between the first guide surface and the second guide surface, with the first guide surface fitting against one side of the buffer plate and the second guide surface fitting against the other side of the buffer plate.
[0017] Compared with the prior art, the present invention has at least the following beneficial effects:
[0018] A first or second guide component is installed on the concrete pile section, and a second or first guide component is installed on the steel pile section. The first guide component has a first guide surface, and the second guide component has a second guide surface. During the docking process between the steel pile section and the concrete pile section, the first and second guide components come into contact. As the steel pile section is gradually advanced, the first and second guide surfaces slide relative to each other, simultaneously guiding the steel pile section to move along the inclined directions of the first and second guide surfaces until the steel pile section and the concrete pile section are aligned. In this way, by adding the first and second guide components, the steel pile section is guided to align with the concrete pile section during the docking process, reducing the difficulty of docking the steel pile section and the concrete pile section and avoiding the situation where the concrete pile section is easily damaged by impact. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the steel-concrete composite pile in the embodiment;
[0020] Figure 2 This is a schematic diagram of the structure of the first pile in the embodiment;
[0021] Figure 3 This is a schematic diagram of the structure of the first frustum-shaped guide member in the embodiment;
[0022] Figure 4 This is a schematic diagram of the structure of the second pile in the embodiment;
[0023] Figure 5 This is a schematic diagram of the anchor component in the embodiment;
[0024] Figure 6 This is a schematic diagram of the buffer plate in the embodiment;
[0025] In the picture:
[0026] 100. Steel pile section; 110. First pile body; 120. First end plate; 130. First guide component; 131. First guide surface;
[0027] 200. Concrete pile section; 210. Second pile body; 220. Second end plate; 230. Second guide surface; 240. Anchor;
[0028] 300. Buffer plate. Detailed Implementation
[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0030] Please refer to Figures 1-6This utility model discloses a steel-concrete composite pile, including a concrete pile section 200 and a steel pile section 100. The composite pile also includes a first guide member 130 and a second guide member. One of the first guide member 130 and the second guide member is installed on the concrete pile section 200, and the other is installed on the steel pile section 100.
[0031] The first guide member 130 has a first guide surface 131, and the second guide member has a second guide surface 230;
[0032] In this invention, the first guide surface 131 gradually tilts outward or inward along the direction of the steel pile section 100 toward the concrete pile section 200, and the second guide surface 230 gradually tilts inward or outward along the direction of the concrete pile section 200 away from the steel pile section 100. In this invention, "inward" means that the guide surface is axially recessed at the end of the installed pile section, and "outward" means that the guide surface is axially protruding at the end of the installed pile section. The first guide surface 131 and the second guide surface 230 are connected so that the steel pile section 100 is aligned with the concrete pile section 200.
[0033] Specifically, this application provides a first guide member 130 or a second guide member on the concrete pile section 200, and a second guide member or a first guide member 130 on the steel pile section 100. The first guide member 130 has a first guide surface 131, and the second guide member has a second guide surface 230. During the docking process between the steel pile section 100 and the concrete pile section 200, the first guide member 130 contacts the second guide member. As the steel pile section 100 is gradually advanced, the first guide surface 131 and the second guide surface 230 slide relative to each other, simultaneously guiding the steel pile section 100 to move along the inclined direction of the first guide surface 131 and the second guide surface 230 until the steel pile section 100 is aligned with the concrete pile section 200. In this way, by adding the first guide component 130 and the second guide component, the steel pile section 100 is guided to align with the concrete pile section 200 during the docking process of the two piles, which reduces the docking difficulty of the steel pile section 100 and the concrete pile section 200, avoids the situation where the concrete pile section is easily damaged by collision, and thus reduces or eliminates the problem of pile bursting caused by eccentric pressure on the concrete pile head or insufficient strength of the concrete pile head during pile driving.
[0034] More specifically, this application has the following multiple solutions: First, the first guide member 130 is disposed on the concrete pile section 200, and the second guide member is disposed on the steel pile section 100, with the first guide surface 131 and the second guide surface 230 inclined inward along the assembly direction of the steel pile section 100; Second, the first guide member 130 is disposed on the concrete pile section 200, and the second guide member is disposed on the steel pile section 100, with the first guide surface 131 and the second guide surface 230 inclined outward along the assembly direction of the steel pile section 100; Third, the first guide member 130 is disposed on the steel pile section 100, and the second guide member is disposed on the concrete pile section 200, with the first guide surface 131 and the second guide surface 230 inclined inward along the assembly direction of the steel pile section 100; Fourth, the first guide member 130 is disposed on the steel pile section 100, and the second guide member is disposed on the concrete pile section 200, with the first guide surface 131 and the second guide surface 230 inclined outward along the assembly direction of the steel pile section 100.
[0035] It should be noted that the assembly direction refers to the direction in which the steel pile section moves toward the concrete pile section. The inclination directions of the first guide surface and the second guide surface can be inward or outward. Inward refers to the direction toward the central axis of the pile section, and outward refers to the direction away from the central axis of the pile section.
[0036] The steel pile section 100 is assembled in the direction of the concrete pile section 200. The steel pile section 100 needs to be moved in the direction of the concrete pile section 200 to connect the steel pile section 100 and the concrete pile section 200.
[0037] Furthermore, the tilt angle of the first guide surface 131 is the same as the tilt angle of the second guide surface 230.
[0038] Specifically, the first guide surface 131 and the second guide surface 230 have the same inclination angle, so that during the docking process between the concrete pile section 200 and the steel pile section 100, the first guide surface 131 and the second guide surface 230 have a larger contact area, ensuring that the steel pile section 100 can be more stably guided to the position aligned with the concrete pile section 200.
[0039] Furthermore, when the steel pile section 100 is connected to the concrete pile section 200, the first guide surface 131 and the second guide surface 230 are in contact.
[0040] After alignment, the first guide surface 131 and the second guide surface 230 fit together, increasing the contact area between the steel pile section 100 and the concrete pile section 200 to enhance the joint strength of the composite pile.
[0041] Furthermore, the first guide surface 131 and the second guide surface 230 are arranged in annular or conical shapes.
[0042] Furthermore, the steel pile section 100 includes a first pile body 110 and a first end plate 120 connected to the first pile body 110, and the concrete pile section 200 includes a second pile body 210 and a second end plate 220 connected to the second pile body 210, wherein the first end plate 120 can be connected to the second end plate 220.
[0043] One of the first guide member 130 and the second guide member is disposed on the first end plate 120, and the other is disposed on the second end plate 220.
[0044] The first guide member 130 is provided on the first end plate 120, and the outer peripheral wall of the first guide member 130 gradually slopes inward along the direction of the first end plate 120 toward the second end plate 220 to form the first guide surface 131.
[0045] The second guide is provided on the second end plate 220. A guide hole is provided in the middle of the second guide. The inner wall of the guide hole gradually slopes inward in the direction away from the first end plate 120 to form the second guide surface 230.
[0046] Specifically, a first guide member 130 is disposed on a first end plate 120, with a guide hole in the middle of the first guide member 130, and the inner wall of the guide hole is inclined to form a first guide surface 131; a second guide member is disposed on a second end plate 220, with the outer peripheral wall of the second guide member inclined to form a second guide surface 230. During the docking process between the steel pile section 100 and the concrete pile section 200, the second guide member gradually extends into the guide hole and makes the second guide surface 230 contact the first guide surface 131. Then, as the steel pile section 100 is advanced, the second guide surface 230 and the first guide surface 131 slide relative to each other, guiding the steel pile section 100 to align with the concrete pile section 200.
[0047] The first guide member 130 is arranged in a conical or frustum shape.
[0048] Specifically, a guide hole is formed in the middle of the first guide member 130, a first guide surface 131 is formed on the inner wall of the guide hole, and a cylinder is provided below the guide hole to further constrain the second guide member. Alternatively, both the first guide member 130 and the second guide member are set as conical / frustum-shaped cylindrical structures, and the second guide member can extend into the first guide member 130, so that the second guide surface 230 fits against the first guide surface 131.
[0049] Alternatively, the cross-section of the first guide member 130 is arranged in a cross shape. That is, the first guide member 130 is arranged in a cross cone shape, including two guide plates that are perpendicular to each other and intersecting, and the outer walls of the two guide plates are inclined to form a plurality of first guide surfaces 131.
[0050] Furthermore, an elastic buffer plate 300 is provided between the first guide surface 131 and the second guide surface 230, with the first guide surface 131 attached to one side of the buffer plate 300 and the second guide surface 230 attached to the other side of the buffer plate 300.
[0051] Specifically, a buffer plate 300 is provided between the first guide surface 131 and the second guide surface 230, so that the first guide surface 131 is in contact with one side of the buffer plate 300 and the second guide surface 230 is in contact with the other side of the buffer plate 300. This can prevent the rigid first guide surface 131 and the second guide surface 230 from not being able to fit together completely, so that the steel pile section 100 and the concrete pile section 200 have a larger contact area.
[0052] Among them, the buffer plate 300 is a polytetrafluoroethylene plate.
[0053] Furthermore, the first end plate 120 and the first pile body 110 are welded together, and the second end plate 220 and the second pile body 210 are also welded together. The first end plate 120 and the second end plate 220 are fastened together by bolts and welded together, so that the first end plate 120 and the second end plate 220 are fastened together by both mechanical connection and welding, which can enhance the connection strength and sealing of the connection.
[0054] Furthermore, the second pile body 210 has several mounting holes, and an anchor 240 is installed in each mounting hole, extending into the second pile body 210. In this invention, the anchor 240 can be any one or a combination of two or more types, such as anchor rods, anchor nails, and anchor bolts. When pouring concrete into the second pile body 210, the anchor 240 can be inserted into the concrete. After the concrete solidifies, the anchor 240 and the concrete become one, and the concrete can be anchored through the anchor 240.
[0055] Meanwhile, since the anchor 240 is fixed on the second pile body 210, inserting the anchor 240 into the concrete can also enhance the connection strength between the concrete and the second pile body 210.
[0056] Furthermore, the second pile body is equipped with a sleeve, and mounting holes are provided on the sleeve for installing anchors or for directly welding the anchors to the pile sleeve. Alternatively, the anchors can also be directly welded to the second end plate.
[0057] Furthermore, the second pile body 210 is cylindrical, and multiple anchors 240 are evenly arranged along the circumference of the second pile body 210 so that the anchors 240 are evenly distributed on the periphery of the concrete and inserted therein.
[0058] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0059] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0060] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0061] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. 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 and is not within the scope of protection claimed by this utility model.
Claims
1. A steel-concrete composite pile, comprising a concrete pile section and a steel pile section, characterized in that: It also includes a first guide member and a second guide member, one of which is installed at the end of the concrete pile section and the other is installed at the end of the steel pile section; The first guide member has a first guide surface, and the second guide member has a second guide surface; wherein, the first guide surface gradually tilts outward or inward along the direction of the steel pile section toward the concrete pile section, and the second guide surface gradually tilts inward or outward along the direction of the concrete pile section away from the steel pile section, and the first guide surface and the second guide surface are adapted to each other so that the steel pile section is axially aligned with the concrete pile section.
2. A steel-concrete composite pile according to claim 1, characterized in that, The tilt angle of the first guide surface is the same as the tilt angle of the second guide surface.
3. A steel-concrete composite pile according to claim 1, characterized in that, When the steel pile section is connected to the concrete pile section, the first guide surface and the second guide surface are in contact.
4. A steel-concrete composite pile according to claim 1, characterized in that, The first guide surface and the second guide surface are arranged in annular or conical shapes.
5. A steel-concrete composite pile according to any one of claims 1-4, characterized in that, The steel pile section includes a first pile body and a first end plate connected to the first pile body, and the concrete pile section includes a second pile body and a second end plate connected to the second pile body, wherein the first end plate can be connected to the second end plate; One of the first guide member and the second guide member is disposed on the first end plate, and the other is disposed on the second end plate.
6. A steel-concrete composite pile according to claim 5, characterized in that, The first guide member is provided on the first end plate, and the outer peripheral wall of the first guide member gradually slopes inward along the direction from the first end plate toward the second end plate to form the first guide surface.
7. A steel-concrete composite pile according to claim 6, characterized in that, The first guide member is arranged in a conical or frustum shape.
8. A steel-concrete composite pile according to claim 6, characterized in that, The cross-section of the first guide member is arranged in a cross shape.
9. A steel-concrete composite pile according to claim 5, characterized in that, A second guide member is provided on the second end plate. A guide hole is provided in the middle of the second guide member. The inner wall of the guide hole gradually slopes inward in the direction away from the first end plate to form the second guide surface.
10. A steel-concrete composite pile according to claim 1, characterized in that, An elastic buffer plate is also provided between the first guide surface and the second guide surface. The first guide surface is in contact with one side of the buffer plate, and the second guide surface is in contact with the other side of the buffer plate.