Production method of multi-type high-strength concrete pipe pile

Abstract

The application discloses a production method of multi-type high-strength concrete pipe piles and belongs to the technical field of building engineering. The method comprises the following steps: step one, inserting a pipe pile reinforcement cage into a standard hole group on a head plate and a tail plate to produce a standard pile; step two, after the production of the standard pile is completed, loosening connecting bolts on a tensioning device, and pulling out the pipe pile reinforcement cage from the standard hole group; and step three, inserting the pipe pile reinforcement cage into a thin-wall hole group on the head plate and the tail plate to produce a thin-wall pile. The tensioning end plates of different types of pipe piles are fused together by using specially designed tensioning end plates, and the tensioning connection hole positions of the PHC400 standard pile and the PHC400 thin-wall pile are integrated. When the pile type is switched, the whole set of tensioning end plates does not need to be disassembled and replaced, and only the tensioning screw rod needs to be inserted into the corresponding hole group, so that the mold changing time is greatly shortened, and the operation efficiency of the pipe pile production line is improved.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and more specifically, to a method for producing various types of high-strength concrete pipe piles. Background Technology

[0002] In recent years, with the continuous expansion of national investment in infrastructure construction, especially the strong demand in areas such as highways, bridges, ports, and urban rail transit, as well as rural housing construction and infrastructure construction, the PHC pipe pile industry has been provided with new growth points. Among them, the PHC400 type pipe pile has good advantages in terms of economy, transportation efficiency, and construction convenience, and has the best overall cost performance in projects with fewer than 18 floors, non-extreme geological conditions, and cost-sensitive projects.

[0003] PHC400 type pipe piles are divided into PCH400 thin-walled piles and standard piles. Since the end plate widths of PHC400-A95 standard piles and PHC400-A65 thin-walled piles are different, and the diameter DP value of the prestressed distribution steel bars is also different, in order to stagger the prestressed distribution steel bar holes and ensure the safety of prestressed tendon tensioning, the positions of the pre-drilled screw holes on the end plate and the screw holes connecting the tensioning end plate are also different. Therefore, when producing thin-walled piles and standard piles, it is necessary to frequently replace the tensioning end plate, which is time-consuming, laborious and slows down the production pace. Summary of the Invention

[0004] 1. The technical problem that the invention aims to solve To address the issue of frequent replacement of tensioning end plates mentioned in the background art, this invention proposes a production method for various types of high-strength concrete pipe piles, thus solving this problem.

[0005] 2. Technical Solution To achieve the above objectives, the technical solution provided by this invention is as follows: This invention provides a method for producing various types of high-strength concrete pipe piles, using a tensioning end plate. The tensioning end plate includes a head plate and a tail plate. The head plate has head plate connection holes, which are divided into a standard hole group and a thin-walled hole group. The standard hole group and the thin-walled hole group are evenly distributed along the circumference of the head plate, and the standard hole group and the thin-walled hole group include a common hole of the same head plate. The tail plate has tail plate connection holes corresponding to the positions of the head plate connection holes. The steps are as follows: Step 1: Insert the steel reinforcement cage of the pipe pile into the standard hole group on the head plate and tail plate to produce standard piles; Step 2: After the standard piles are produced, loosen the connecting bolts on the tensioning equipment and pull the steel reinforcement cage of the pipe pile out of the standard hole group. Step 3: Insert the steel reinforcement cage of the pipe pile into the thin-walled hole group on the head plate and tail plate to produce thin-walled piles.

[0006] Furthermore, the headplate connection hole includes a common headplate hole, multiple standard headplate holes, and multiple thin-walled headplate holes. The common headplate hole and the multiple standard headplate holes constitute a standard hole group, which are equally spaced along the circumference of the headplate. The common headplate hole and the multiple thin-walled headplate holes constitute a thin-walled hole group, which are equally spaced along the circumference of the headplate.

[0007] Furthermore, the standard hole group has a total of 6 holes; the thin-walled hole group has 7 holes.

[0008] Furthermore, in step one, the steel reinforcement cage of the pipe pile is inserted into the common hole and standard hole of the head plate and the common hole and standard hole of the tail plate for production.

[0009] Furthermore, in step three, the steel reinforcement cage of the pipe pile is inserted into the common hole and thin-walled hole (143) of the head plate and the common hole and thin-walled hole of the tail plate for production.

[0010] Furthermore, the cross-sectional centers of all holes in the standard hole group are located on the circumference of the same circle; the cross-sectional centers of all holes in the thin-walled hole group are located on the circumference of the same circle; the cross-sectional centers of all holes in both the standard hole group and the thin-walled hole group are located on the head plate hole line, which is the circumference line of a circle.

[0011] Furthermore, a headplate hole is formed on the headplate, the headplate hole including a first headplate hole and a second headplate hole, the diameter of the first headplate hole is smaller than that of the second headplate hole, and the first headplate hole intersects with the second headplate hole closer to the side of the headplate.

[0012] Furthermore, the head plate body includes a first head plate body and a second head plate body, which are integral structures. The diameter of the first head plate body is larger than that of the second head plate body. The second head plate body is located on the side away from the first hole of the head plate.

[0013] Furthermore, the tailplate body includes a first tailplate body and a second tailplate body, which are integral structures, and the diameter of the first tailplate body is larger than that of the second tailplate body.

[0014] Furthermore, a tailplate hole is provided on the tailplate, the tailplate hole including a first tailplate hole and a tailplate groove arranged circumferentially along the first tailplate hole, the diameter of the tailplate groove gradually decreasing from the first tailplate body to the second tailplate body.

[0015] 3. Beneficial effects Compared with existing known technologies, the technical solution provided by this invention has the following significant advantages: (1) The present invention provides a universal tensioning end plate, which integrates the tensioning end plates of different types of pipe piles by using a specially designed tensioning end plate, thereby realizing the integration of tensioning connection holes for PHC400 standard piles and PHC400 thin-walled piles. When switching pile types in production, there is no need to disassemble and replace the entire set of tensioning end plates. Only the tensioning screw needs to be adjusted and inserted into the corresponding hole group, which greatly shortens the mold change time and improves the operating efficiency of the pipe pile production line. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the head plate structure of the present invention; Figure 2 This is a side sectional view of the head plate of the present invention; Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This is a schematic diagram of the tail plate structure of the present invention; Figure 5 This is a side sectional view of the tail plate of the present invention.

[0017] The numbers on the map are: 100. Head plate; 110. Head plate body; 111. First head plate body; 112. Second head plate body; 113. First transition; 114. Second transition; 120. Head plate hole line; 130. Head plate hole; 131. First head plate hole; 132. Second head plate hole; 140. Head plate connecting hole; 141. Common head plate hole; 142. Standard head plate hole; 143. Thin-walled head plate hole; 200. Tailplate; 210. Tailplate body; 211. Tailplate first body; 212. Tailplate second body; 220. Tailplate hole line; 230. Tailplate hole; 231. Tailplate first hole; 232. Tailplate groove; 240. Tailplate connecting hole; 241. Tailplate common hole; 242. Tailplate standard hole; 243. Tailplate thin-walled hole. Detailed Implementation

[0018] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.

[0019] To make the above-mentioned objects, features, and advantages of the invention more apparent and understandable, specific embodiments of the invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the invention. However, the invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0020] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] Example Combination Figures 1-5 This embodiment provides a production method for various types of high-strength concrete pipe piles, utilizing specially designed tensioning end plates, specifically including a head plate 100 and a tail plate 200. Both the head plate 100 and the tail plate 200 have holes for accommodating the pipe pile, and are located at opposite ends of the pipe pile. Specifically, the head plate 100 in this embodiment includes an integral head plate body 110, which comprises a first head plate body 111 and a second head plate body 112. These two bodies have different diameters, with the first head plate body 111 having a larger diameter than the second head plate body 112. They are connected by a first transition 113 and a second transition 114 via an arc transition (see [reference]). Figure 3 In this embodiment, a stepped head plate hole 130 is formed on the head plate 100, consisting of a small-diameter first head plate hole 131 and a large-diameter second head plate hole 132, which facilitates ventilation inside the pipe pile and compaction of the concrete pouring. In this embodiment, the first head plate hole 131 is located close to the head plate body 110, and the second head plate hole 132 is located inside the head plate body 110. The second head plate body 112 is located away from the first head plate hole 131.

[0022] In this embodiment, the tail plate 200 corresponds to the head plate 100. Its tail plate body 210 includes a first tail plate body 211 and a second tail plate body 212, which are an integral structure. The diameter of the first tail plate body 211 is larger than that of the second tail plate body 212. A tail plate hole 230 is provided on the tail plate 200. The tail plate hole 230 includes a first tail plate hole 231 and a tail plate groove 232 arranged circumferentially along the first tail plate hole 231. The diameter of the tail plate groove 232 gradually decreases from the first tail plate body 211 to the second tail plate body 212. This flared design facilitates automatic alignment of the anchor, and after tensioning, the anchor fits more tightly against the groove wall, enhancing pull-out resistance.

[0023] It is worth noting that in this embodiment, connecting holes are provided on both the head plate 100 and the tail plate 200. The head plate 100 has a head plate connecting hole 140, and the tail plate 200 has a tail plate connecting hole 240. In this embodiment, the head plate connecting hole 140 is divided into a standard hole group and a thin-walled hole group. Both the standard hole group and the thin-walled hole group are evenly distributed along the circumference of the head plate 100, and both include the same common head plate hole 141. The head plate connecting hole 140 in this embodiment includes a common head plate hole 141, multiple standard head plate holes 142, and multiple thin-walled head plate holes 143. The common head plate hole 141 and the multiple standard head plate holes 142 constitute a standard hole group, evenly distributed along the circumference of the head plate 100; the common head plate hole 141 and the multiple thin-walled head plate holes 143 constitute a thin-walled hole group, evenly distributed along the circumference of the head plate 100. Specifically, the head plate shared hole 141 serves as the common reference hole for both the standard hole group and the thin-walled hole group, and there is one such hole. The head plate standard hole 142 is used for tensioning connection of PHC400 standard piles (such as type A95), and there are five such holes (6 in total with the shared hole). The head plate thin-walled hole (143) is used for tensioning connection of PHC400 thin-walled piles (such as type A65), and there are six such holes (7 in total with the shared hole). In this embodiment, the standard hole group (1 shared hole + 5 standard holes) is distributed at equal intervals along the circumference; the thin-walled hole group (1 shared hole + 6 thin-walled holes) is also distributed at equal intervals along the circumference. In addition, the center of the cross-section of all holes in the standard hole group and the thin-walled hole group is located on the head plate hole line 120, which is the circumference of a circle. Since the two groups of holes share a hole position and all holes are located on the same circumference, the installation center of the tensioning equipment remains unchanged, effectively avoiding eccentric tensioning.

[0024] In this embodiment, the tail plate 200 is provided with tail plate connecting holes 240 corresponding to the head plate connecting holes 140. The tail plate connecting holes (240) are also divided into three groups, each corresponding one-to-one with a head plate hole: the tail plate common hole 241 corresponds coaxially to the head plate common hole 141; the tail plate standard hole 242 corresponds coaxially to the head plate standard hole 142 and is used for standard pile tensioning; the tail plate thin-walled hole 243 corresponds coaxially to the head plate thin-walled hole 143 and is used for thin-walled pile tensioning. Preferably, the centers of all tail plate connecting holes 240 are located on a circular tail plate hole line 220 to ensure assembly accuracy.

[0025] The specific production steps are as follows: Step 1: Insert the steel reinforcement cage of the pipe pile into the standard hole group on the head plate 100 and tail plate 200 to produce a standard pile; Step 2: After the standard piles are produced, loosen the connecting bolts on the tensioning equipment and pull the steel reinforcement cage of the pipe pile out of the standard hole group. Step 3: Insert the steel reinforcement cage of the pipe pile into the thin-walled hole group on the head plate 100 and the tail plate 200 to produce thin-walled piles.

[0026] In this embodiment, when the production line needs to switch from producing standard piles to thin-walled piles, workers do not need to use overhead cranes to lift and disassemble heavy end plate components.

[0027] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A method for producing multi-type high-strength concrete pipe piles, characterized in that, Using a tensioning end plate, the tensioning end plate includes a head plate (100) and a tail plate (200). The head plate (100) is provided with head plate connecting holes (140), which are divided into a standard hole group and a thin-walled hole group. The standard hole group and the thin-walled hole group are evenly distributed along the circumference of the head plate (100). The standard hole group and the thin-walled hole group include a common hole (141) of the same head plate. The tail plate (200) is provided with a tail plate connecting hole (240) corresponding to the position of the head plate connecting hole (140). The steps are as follows: Step 1: Insert the steel reinforcement cage of the pipe pile into the standard hole group on the head plate (100) and tail plate (200) to produce standard piles; Step 2: After the standard piles are produced, loosen the connecting bolts on the tensioning equipment and pull the steel reinforcement cage of the pipe pile out of the standard hole group. Step 3: Insert the steel reinforcement cage of the pipe pile into the thin-walled hole group on the head plate (100) and tail plate (200) to produce thin-walled piles.

2. The method for producing multi-type high-strength concrete pipe piles according to claim 1, characterized in that, The headplate connecting hole (140) includes a headplate common hole (141), multiple headplate standard holes (142) and multiple headplate thin-wall holes (143). The headplate common hole (141) and multiple headplate standard holes (142) constitute a standard hole group, which are equally spaced along the circumference of the headplate (100). The headplate common hole (141) and multiple headplate thin-wall holes (143) constitute a thin-wall hole group, which are equally spaced along the circumference of the headplate (100).

3. The method for producing multi-type high-strength concrete pipe piles according to claim 2, characterized in that, The standard hole group has a total of 6 holes; the thin-walled hole group has 7 holes.

4. The method for producing multi-type high-strength concrete pipe piles according to claim 3, characterized in that, In step one, the steel reinforcement cage of the pipe pile is inserted into the common hole (141) and standard hole (142) of the head plate (100) and the common hole (241) and standard hole (242) of the tail plate (200) for production.

5. The method for producing multi-type high-strength concrete pipe piles according to claim 3, characterized in that, In step three, the steel reinforcement cage of the pipe pile is inserted into the common hole (141) and thin-walled hole (143) of the head plate (100) and the common hole (241) and thin-walled hole (243) of the tail plate (200) for production.

6. The method for producing multi-type high-strength concrete pipe piles according to claim 1, characterized in that, The center of the cross-section of all holes in the standard hole group is located on the circumference of the same circle; the center of the cross-section of all holes in the thin-walled hole group is located on the circumference of the same circle; the center of the cross-section of all holes in the standard hole group and the thin-walled hole group is located on the head plate hole line (120), which is the circumference line of the circle.

7. The method for producing multi-type high-strength concrete pipe piles according to claim 1, characterized in that, The head plate (100) has a head plate hole (130), which includes a first head plate hole (131) and a second head plate hole (132). The diameter of the first head plate hole (131) is smaller than that of the second head plate hole (132). The first head plate hole (131) intersects with the second head plate hole (132) and is closer to the side of the head plate (100).

8. The method for producing multi-type high-strength concrete pipe piles according to claim 7, characterized in that, The head plate (100) includes a first head plate body (111) and a second head plate body (112), which are integral structures. The diameter of the first head plate body (111) is larger than that of the second head plate body (112). The second head plate body (112) is located on the side away from the first hole (131) of the head plate.

9. The method for producing multi-type high-strength concrete pipe piles according to claim 1, characterized in that, The tail plate body (210) of the tail plate (200) includes a first tail plate body (211) and a second tail plate body (212). The first tail plate body (211) and the second tail plate body (212) are an integral structure. The diameter of the first tail plate body (211) is larger than that of the second tail plate body (212).

10. A method for producing multi-type high-strength concrete pipe piles according to claim 9, characterized in that, Tail plate hole (230) is provided on the tail plate (200). The tail plate hole (230) includes a tail plate first hole (231) and a tail plate groove (232) arranged circumferentially along the tail plate first hole (231). The diameter of the tail plate groove (232) gradually decreases from the tail plate first plate body (211) to the tail plate second plate body (212).

Images