Precast pile
By setting connection terminals and broken heads at the ends of the pile rods, combined with sliding fit and welding fixation, the problems of large ground breaking resistance and unstable connection of traditional prefabricated piles are solved, and more efficient construction and better geological adaptability are achieved.
Patent Information
- Application Number
- CN202422387714.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-29
Smart Images
Figure CN223151166U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building construction components, and particularly relates to a precast pile. Background Technique
[0002] In modern construction projects, precast piles, as an important foundation component, are widely used in the foundation treatment of high-rise buildings, bridges, docks and other projects. The use of precast piles can not only significantly improve the construction efficiency, but also ensure the project quality and safety. However, with the continuous increase of project requirements and the complex and changeable geological conditions, the traditional precast pile design and construction methods face many challenges.
[0003] First of all, when the precast pile is pressed into the ground, it needs to overcome a large resistance. Especially in hard soil layers or rock layers, the traditional pile tip design is often difficult to break the soil effectively, resulting in difficult pile sinking or even damage to the pile body. Therefore, how to design a breaking head that can effectively reduce the soil breaking resistance has become an urgent problem to be solved.
[0004] Secondly, the stability and reliability of the precast pile during the connection process are also crucial. The traditional connection methods often rely on simple mechanical connections or welding, and these methods are prone to looseness or fatigue cracks under long-term stress or harsh environments, affecting the safety of the overall structure. Therefore, developing a new type of connection structure to improve the connection stability and durability between pile rods is crucial for ensuring project safety.
[0005] In addition, with the improvement of environmental protection requirements and the limitation of construction sites, the design of precast piles also needs to consider the convenience of installation and maintenance, as well as the ability to adapt to different geological conditions. This requires that the precast pile not only has an efficient soil breaking mechanism, but also has good adaptability and flexibility.
[0006] In view of the above problems, an improved precast pile design is proposed in this technical background. Content of the Utility Model
[0007] The purpose of the utility model is to provide a precast pile. By setting connection terminals at the end of the pile rod and cooperating with a breaking head and a connecting plate, this design significantly improves the connection stability between pile rods and the soil breaking resistance of the precast pile.
[0008] To solve the above technical problems, the utility model is realized through the following technical solutions:
[0009] The utility model relates to a precast pile, which comprises a pile rod, a soil-breaking head and a connecting plate; a connecting terminal is arranged at each of the two ends of the pile rod; the soil-breaking head is connected to the connecting terminal at the lower end of the pile rod by a plurality of single-headed bolts, and the single-headed bolts are slidably matched with the connecting terminals; the two connecting terminals at the connecting ends of the two pile rods are connected and fixed by a plurality of bolt nuts, and the two connecting terminals are welded and fixed into a whole by the two connecting plates.
[0010] As a preferred technical solution of the utility model, the connecting terminal comprises a first flange plate having the same diameter as the pile rod; a coaxial circular tube is fixed on the outer side surface of the first flange plate; a coaxial second flange plate is fixed at the other end of the circular tube; the diameter of the second flange plate is smaller than that of the first flange plate; the two second flange plates of the two connecting terminals are connected and fixed by the bolt nuts.
[0011] As a preferred technical solution of the utility model, the soil-breaking head comprises a cylindrical part having the same outer diameter as the first flange plate; a tapered cylindrical part is integrally formed at the lower end of the cylindrical part; a circular ring plate is fixed at the lower end part of the inner wall of the cylindrical part; a plurality of threaded through holes for threadedly connecting with the single-headed bolts are formed in the circular ring plate.
[0012] As a preferred technical solution of the utility model, the connecting plate is of a semi-cylindrical body structure, and the outer diameter of the connecting plate is the same as that of the first flange plate; the inner diameter of the connecting plate is the same as the outer diameter of the second flange plate; the connecting plate is welded to the first flange plate; the two connecting plates are welded and fixed to each other.
[0013] As a preferred technical solution of the utility model, a right-angled groove for assisting welding is formed at the edge of the outer arc surface of the connecting plate.
[0014] The utility model has the following beneficial effects:
[0015] 1. By arranging connecting terminals at the ends of the pile rods and cooperating with the soil-breaking head and the connecting plate, the design of the utility model significantly improves the connection stability between the pile rods and the soil-breaking resistance of the precast pile. The double-flange plate structure of the connecting terminal and the setting of the circular tube make the connection more firm, and the use of bolt nuts ensures the reliability and tightness of the connection. In addition, the design of the connecting plate not only strengthens the structural strength of the connection part, but also reduces the resistance during pile pressing through its flat transition design.
[0016] 2. The earth-breaking head of the utility model is connected to the single-head bolt through the threaded through hole on the circular ring plate. The sliding cooperation between the single-head bolt and the connection terminal realizes that the earth-breaking head is forced to move toward the pile rod to close the gap between the pile rod and the earth-breaking head during the earth-breaking process. This design enables the pile rod and the earth-breaking head to form a smooth outer wall when breaking the ground, thereby maximizing the reduction of resistance and facilitating the pile rod to be pressed into the ground.
[0017] 3. The utility model adopts a modular design, and this prefabricated pile also shows advantages in installation and maintenance. The design of the connecting plate and the connecting terminal allows the pile rods to be quickly and accurately connected together, while facilitating future maintenance and replacement work.
[0018] 4. The design of the utility model takes different geological conditions into consideration. Through the adjustable soil-breaking head and flexible connection method, the prefabricated piles can adapt to a variety of soil environments, thereby increasing their scope of application.
[0019] 5. The optimization of the overall design of the utility model reduces the time and labor costs during the construction process. The stable connection method and effective ground-breaking mechanism make the pile foundation construction more efficient and help shorten the project cycle.
[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0022] Figure 1 It is a structural schematic diagram of the prefabricated piles of the utility model when connected to the pile body.
[0023] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.
[0024] Figure 3 for Figure 1 A partial enlarged view of point B in the middle.
[0025] Figure 4 for Figure 1 A partial enlarged view of point C in the middle.
[0026] Figure 5 It is a schematic diagram of the local structural cross-section of the connection part between pile rods.
[0027] Figure 6It is a schematic cross-sectional view of the local structure of the connection part between the pile rod and the soil-breaking head.
[0028] Figure 7 It is a schematic structural view of the soil-breaking head.
[0029] Figure 8 It is a schematic structural view of the connecting plate.
[0030] In the attached drawings, the list of components represented by each reference numeral is as follows:
[0031] 1 - pile rod, 2 - soil-breaking head, 3 - connecting plate, 4 - single-headed bolt, 5 - bolt nut, 11 - connection terminal, 111 - first flange, 112 - circular tube, 113 - second flange, 21 - cylindrical part, 22 - tapered conical part, 23 - ring plate, 24 - threaded through-hole, 31 - right-angled groove. Specific embodiments
[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Specific Embodiment 1:
[0034] Please refer to Figure 1-8 As shown, the present invention is a precast pile, which generally includes three parts: a pile rod 1, a soil-breaking head 2, and a connecting plate 3. A connection terminal 11 is provided at each end of the pile rod 1. The soil-breaking head 2 is installed at the lowermost end to assist in breaking the soil and reduce the resistance during the downward pressing of the pile rod 1. The connecting plate 3 is used to assist in connecting two pile rods 1 and improve the stability of its connection structure.
[0035] Among them, the structure of the connection terminal 11 specifically includes a first flange 111 having the same diameter as the pile rod 1. The first flange 111 is connected to the axial reinforcement in the pile rod 1, and the axial reinforcement between the connection terminals 11 at both ends is stretched and tightened during the manufacture of the pile rod 1. A coaxially arranged circular tube 112 is fixed to the outer side of the first flange 111. The other end of the circular tube 112 is fixed with a coaxially arranged second flange 113. The diameter of the second flange 113 is smaller than that of the first flange 111.
[0036] Among them, the structure of the ground-breaking head 2 specifically includes a cylindrical part 21 with an outer diameter the same as that of the first flange 111. A tapered cone part 22 is integrally formed at the lower end of the cylindrical part 21. A circular ring plate 23 is fixed to the lower end part of the inner wall of the cylindrical part 21. A number of threaded through holes 24 for threaded connection with the single-headed bolts 4 are provided on the circular ring plate 23. The ground-breaking head 2 is connected to the connection terminal 11 at the lower end of the pile rod 1 through a number of single-headed bolts 4, and the single-headed bolts 4 are slidably matched with the connection terminal 11. The ground-breaking head 2 is connected to the connection terminal 11 at the lower end of the pile rod 1 through eight single-headed bolts 4. The single-headed bolts 4 are axially slidably matched with the second flange 113 inside the ground-breaking head 2. When the ground-breaking head 2 is in use, it moves towards the pile rod 1 under force to close the gap between the pile rod 1 and the ground-breaking head 2. The two form a smooth outer wall to minimize the resistance during ground breaking, which is beneficial to pressing the pile rod 1 into the ground.
[0037] When two pile rods 1 are connected, the second flanges 113 of the two connection terminals 11 are connected and fixed by the bolt nuts 5. The two connection terminals 11 at the connection ends of the two pile rods 1 are connected and fixed by eight bolt nuts 5, and the two connection terminals 11 are welded and fixed into one body through two connecting plates 3. Among them, the connecting plate 3 is a semi-cylindrical body structure, and the outer diameter of the connecting plate 3 is the same as that of the first flange 111. The inner diameter of the connecting plate 3 is the same as the outer diameter of the second flange 113. The connecting plate 3 is welded to the first flange 111. The two connecting plates 3 are welded and fixed to each other. Among them, in order to facilitate the welding between the connecting plate 3 and the first flange 111, and the welding between the connecting plates 3, a right-angle groove 31 for auxiliary welding is provided at the edge of the outer arc surface of the connecting plate 3.
[0038] When connecting the two pile rods 1, first use eight bolt nuts 5 to connect and fix them axially, and then use two connecting plates 3 to fill the gap between the two pile rods 1 and weld them together to strengthen the strength of the connection. On the other hand, the two connecting plates 3 form a straight transition between the two pile rods 1, which is beneficial to reducing the resistance during pile pressing.
[0039] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0040] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.
Claims
1. A precast pile, characterized in that: It includes a pile shaft (1), a soil-breaking head (2) and a connecting plate (3); One connecting terminal (11) is provided at each end of the pile shaft (1); The soil-breaking head (2) is connected to the connecting terminal (11) at the lower end of the pile shaft (1) by a plurality of single-headed bolts (4), and the single-headed bolts (4) are slidably matched with the connecting terminal (11); The two connecting terminals (11) at the connecting ends of the two pile shafts (1) are connected and fixed by a plurality of bolt nuts (5), and the two connecting terminals (11) are welded and fixed into one body by the two connecting plates (3).
2. The precast pile according to claim 1, wherein, The connecting terminal (11) includes a first flange (111) having the same diameter as the pile shaft (1); a coaxial circular tube (112) is fixed on the outer side surface of the first flange (111); the other end of the circular tube (112) is fixed with a coaxial second flange (113); the diameter of the second flange (113) is smaller than the diameter of the first flange (111).
3. The precast pile according to claim 2, wherein, The soil-breaking head (2) includes a cylindrical part (21) whose outer diameter is the same as the outer diameter of the first flange (111); a pointed conical part (22) is integrally formed at the lower end of the cylindrical part (21); a circular ring plate (23) is fixed at the lower end part of the inner wall of the cylindrical part (21); a plurality of threaded through holes (24) for threaded connection with the single-headed bolts (4) are provided on the circular ring plate (23).
4. The precast pile according to claim 3, wherein The connecting plate (3) is of a semi-cylindrical body structure, and the outer diameter of the connecting plate (3) is the same as the outer diameter of the first flange (111); the inner diameter of the connecting plate (3) is the same as the outer diameter of the second flange (113); the connecting plate (3) is welded to the first flange (111); the two connecting plates (3) are welded and fixed.
5. The precast pile according to claim 4, characterized in that, A right-angled groove (31) for assisting welding is provided at the edge of the outer arc surface of the connecting plate (3).