Construction device of tower foundation and construction method of tower foundation
By combining benchmark piles and central positioning frames, and using horizontal detection and leveling components to adjust the position of the cast-in-place cylinder, the connecting pipes connect and reinforce the cast-in-place cylinder, solving the problems of low efficiency and low accuracy in adjusting the position of supports and anchor bolts in the construction of iron tower foundations, and achieving efficient and accurate casting results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XIANGTAN TANZHOU ELECTRIC POWER CONSTR CO LTD
- Filing Date
- 2023-12-15
- Publication Date
- 2026-07-21
AI Technical Summary
In the current construction of iron tower foundations, the efficiency and accuracy of adjusting the position of supports and anchor bolts are low, and it is difficult to ensure that the top surfaces of each support are on the same horizontal plane when pouring concrete.
The construction device includes a benchmark pile, a central positioning frame, and a casting module. The top of the casting cylinder is made level by a horizontal detection component and a leveling component. Connecting pipes are used to connect the casting cylinders to improve positional accuracy and efficiency. The connecting pipes are fixed with reinforcements to prevent deformation. The guide surface guides the anchor bolts.
It achieved high-precision positioning of the casting cylinder, reduced measurement and adjustment time, improved construction efficiency and the accuracy of the support position, and ensured that the top surfaces of each support were flush.
Smart Images
Figure CN117552460B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of tower foundation construction technology, and in particular to a tower foundation construction device and a tower foundation construction method. Background Technology
[0002] In recent years, with the rapid growth of the national economy, the power industry has developed rapidly, which has promoted the rapid development of the power transmission line tower industry. In the process of long-distance power transmission, power towers often need to cross mountains and rivers. During the construction of power towers on mountain slopes, each tower foundation needs to be equipped with four supports, and pre-embedded screws for tower fixing are embedded in the supports.
[0003] In the construction of existing iron tower foundations, the center position of the tower is first determined by surveying, and benchmark piles are driven in. During the foundation construction, multiple supports need to be poured, typically four. The position of each support is determined based on the benchmark piles, and a foundation pit is excavated at that location. Support formwork is then erected in the pits, anchor bolts are placed inside, and concrete is poured. During the erection of the support formwork and the placement of the anchor bolts, the distances between the support formwork and the central positioning rod, as well as the distances between the anchor bolts and the central positioning rod, need to be repeatedly measured and corrected to ensure that the supports and anchor bolts are in the correct positions after pouring. This structure and construction method for iron tower foundations is time-consuming, and the multiple measurements and measurement errors result in low accuracy in adjusting the positions of the supports and anchor bolts. Furthermore, it is inconvenient to measure the horizontal height of the top surface of each support during concrete pouring, making it difficult to ensure that the top surfaces of multiple supports are on the same horizontal plane. Summary of the Invention
[0004] To address the issues of low efficiency and inaccuracy in adjusting the positions of supports and anchor bolts, this application provides a tower foundation structure and its construction method.
[0005] This application provides a construction device for a steel tower foundation, which adopts the following technical solution: A construction device for a steel tower foundation includes a reference pile, a central positioning frame, and a casting module. The central positioning frame includes a positioning seat and a leveling component for adjusting the levelness of the positioning seat. The reference pile and the leveling component are fixed in the soil. The positioning seat is set on the leveling component and has a positioning hole and a level detection component. The level detection component is used to detect the levelness of the positioning seat. The reference pile passes through the positioning hole. The casting module includes multiple casting cylinders. Each casting cylinder is detachably connected to the positioning seat. The distance from each casting cylinder to the center of the positioning hole is equal. The top opening of each casting cylinder is flush. A foundation pit is provided in the soil for each casting cylinder, and the casting cylinder is located in the foundation pit.
[0006] By adopting the above technical solution, after surveying, the benchmark piles are fixed in the soil, passing through the positioning holes on the central positioning frame. The position of the central positioning frame is located by the benchmark piles, and the levelness of the positioning seat is detected by the level detection component. The positioning seat is adjusted to be level by adjusting the leveling component to ensure that the top openings of each casting cylinder are aligned. When each casting cylinder is filled with concrete and overflows from it, the upper surface of the support formed after pouring is flush with the upper surface of each casting cylinder, thus ensuring that the upper surfaces of each support are aligned. In addition, the distance from each casting cylinder to the center of the positioning hole is equal and fixed. Therefore, when pouring concrete into the casting cylinder, it is not necessary to measure and adjust the position of the casting cylinder before pouring, which improves the accuracy of the distance from the casting cylinder to the center of the positioning hole, saves measurement time, and improves work efficiency.
[0007] Optionally, the leveling assembly includes a chain, multiple screws, and multiple sprockets corresponding to the screws. The multiple sprockets rotate horizontally on the positioning seat. Each screw is threadedly connected to each sprocket, and they correspond one-to-one. One end of the screw passes through the positioning seat and is fixed in the soil. The chain is connected to multiple sprockets at the same time. The positioning seat is also equipped with a drive mechanism for driving one of the sprockets to rotate, so that when the drive mechanism drives one sprocket to rotate, it drives the other sprockets to rotate simultaneously through the chain.
[0008] By adopting the above technical solution, the leveling component adjusts the positioning seat, and the level detection component detects the levelness of the positioning seat. When one side of the positioning seat is higher, the screw position on that side is moved downward, so that the screw on that side is inserted deeper into the soil, thereby lowering the height of the screw and the positioning seat on that side, thus adjusting the positioning seat to be level. In addition, the sprocket is threadedly connected to the screw. When the sprocket rotates relative to the screw, it moves up and down along the screw axis. The sprocket is rotatably connected to the positioning seat. When the drive mechanism drives the chain to drive multiple sprockets to rotate simultaneously, the multiple sprockets simultaneously drive the positioning seat to move up and down to adjust the height of the positioning seat, thereby adjusting the height of the casting cylinder opening and ensuring that the support is at a suitable height after casting.
[0009] Optionally, the drive mechanism includes a drive wheel, a driven wheel, and a transmission belt. The drive wheel is rotatably connected to the positioning seat, the driven wheel is fixedly connected to one of the multiple sprockets, and the driven wheel is coaxially arranged with the sprocket. The transmission belt is wound around the drive wheel and the driven wheel, and the drive wheel is provided with a handle for driving the drive wheel to rotate.
[0010] By adopting the above technical solution, the rotating handle drives the driving wheel to rotate, which in turn drives the driven wheel to rotate via the transmission belt. The driven wheel is coaxially and fixedly connected to one of the multiple sprockets. Therefore, by driving the rotating handle to rotate, the chain and multiple sprockets can be driven to rotate simultaneously. The height of the positioning seat can be adjusted by rotating in both directions.
[0011] Optionally, the casting module is also equipped with a synchronous casting component, which includes multiple connecting pipes that sequentially connect multiple casting cylinders so that the concrete in the casting cylinder can flow through the connecting pipes to another casting cylinder.
[0012] By adopting the above technical solution, multiple connecting pipes connect multiple casting cylinders in sequence. When concrete is poured from one of the casting cylinders, the concrete flows through the connecting pipe to other casting cylinders, eliminating the need to pour concrete back and forth to each casting cylinder one by one. This facilitates casting, saves casting time, and improves casting efficiency.
[0013] Optionally, a reinforcing member is installed on the connecting pipe to strengthen it. The reinforcing member includes a clamp and a reinforcing rod. The clamp is fitted onto the connecting pipe, and a sleeve is fixedly connected to the clamp. A screw is threaded onto the sleeve. One end of the reinforcing rod passes through the sleeve and is inserted and fixed in the soil. One end of the screw abuts against the reinforcing rod to fix the clamp and the reinforcing rod.
[0014] By adopting the above technical solution, clamps, sleeves, and screws are used to fix the connecting pipe to the reinforcing rod. The reinforcing rod is inserted and fixed in the soil. The connecting pipe is reinforced by the reinforcing rod, clamps, sleeves, and screws to prevent the position of the cast-in-place cylinder from changing due to the deformation of the concrete under gravity during the concrete pouring process. This ensures the accuracy of the position of the cast-in-place cylinder and improves the position accuracy of the support formed after pouring.
[0015] Optionally, one of the multiple casting cylinders may be detachably connected to a feed hopper so that concrete enters each casting cylinder through the feed hopper and connecting pipe.
[0016] By adopting the above technical solution, a feeding hopper is set on one of the casting cylinders for casting. First, the feeding port of the feeding hopper is larger than the opening of the casting cylinder, so the concrete is less likely to spill during casting, which facilitates large-volume casting. Second, the casting cylinder is located above the casting cylinder, so the concrete can easily flow from high to low when being poured in the casting cylinder, which accelerates the flow of the concrete and makes it easier for the concrete to flow to each casting cylinder, thus improving the casting efficiency.
[0017] Optionally, a positioning cylinder is provided between the casting vertical cylinder and the positioning seat. The positioning cylinder has a guide surface for guiding and positioning the anchor bolts that need to be placed in the casting vertical cylinder and fixed to the reinforcing cage.
[0018] By adopting the above technical solution, the positioning cylinder is equipped with a guide surface. When installing the positioning cylinder, the anchor bolts that are fixed to the reinforcing cage are first placed in the foundation pit, and the cast-in-place vertical cylinder is placed on the reinforcing cage. Then the positioning cylinder is placed on top. When placing the positioning cylinder on top, the positioning guide surface guides the anchor bolts and the reinforcing cage, so that the anchor bolts and the reinforcing cage are located in the center of the cast-in-place vertical cylinder, ensuring the accuracy of the anchor bolt position and facilitating the installation of the tower base in the subsequent tower construction.
[0019] Optionally, a protective sleeve is fitted onto the upper end of the screw.
[0020] By adopting the above technical solution, when inserting the screw into the soil, it is necessary to use a hammer to strike the upper part of the screw to drive it into the soil. When using the hammer to strike, the upper part of the screw will be damaged. By putting a protective sleeve on the upper end of the screw, damage to the screw can be prevented when striking the screw.
[0021] Optionally, the positioning seat is also provided with a directional hole, into which a directional rod is inserted. The directional rod passes through the directional hole and is inserted into the soil.
[0022] By adopting the above technical solution, when determining the position and direction of the iron tower, the positioning rod is inserted into the soil. When installing the central positioning frame, the reference pile passes through the central positioning hole on the positioning seat, and the directional rod passes through the directional hole. The position of the positioning seat is determined by the cooperation of the central hole and the reference pile, and the installation direction of the positioning seat is determined by the cooperation of the directional hole and the directional rod, thus achieving complete determination of the position of the foundation pit.
[0023] This application also provides a method for constructing a tower foundation, employing the following technical solution: S1: Determine the location of the benchmark piles through surveying and drive them into the ground; S2: Determine the location of each foundation pit in sequence according to the location of the benchmark piles, and excavate each foundation pit; S3: Pass the central positioning frame through the benchmark pile and install it on the soil. Adjust the positioning seat on the positioning frame to a horizontal state, and insert each cast-in-place vertical cylinder into each foundation pit. S4: Pour each casting cylinder once to make the concrete in the foundation pit level with the concrete in the casting cylinder. S5. After the concrete poured in the first pour has solidified, a second pour is carried out on each pouring cylinder to fill the pouring cylinder with concrete. S6. After the concrete has hardened, remove the benchmark pile and the center positioning frame.
[0024] In summary, this application includes the following beneficial technical effects: 1. This application uses a method where, after surveying, benchmark piles are fixed in the soil, passing through positioning holes on the central positioning frame. The benchmark piles are used to position the central positioning frame, and a leveling component is used to detect the levelness of the positioning seat. The leveling component is then used to adjust the positioning seat to a horizontal position, ensuring that the top openings of each pouring cylinder are level. When each pouring cylinder is filled with concrete and overflows from it, the upper surface of the resulting support is level with the upper surface of each pouring cylinder, thus ensuring that the upper surfaces of each support are level. Furthermore, the distance from each pouring cylinder to the center of the positioning hole is equal and fixed. Therefore, when pouring concrete into the pouring cylinder, it is not necessary to measure and adjust the position of the pouring cylinder before pouring, which improves the accuracy of the distance from the pouring cylinder to the center of the positioning hole, saves measurement time, and improves work efficiency. 2. This application uses multiple connecting pipes to connect multiple casting cylinders in sequence. When concrete is poured from one of the casting cylinders, the concrete flows through the connecting pipe to other casting cylinders, eliminating the need to pour concrete back and forth to each casting cylinder one by one. This facilitates casting, saves casting time, and improves casting efficiency. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application on soil; Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 3 This is a schematic diagram of the overall structure of the center positioning frame in Embodiment 1 of this application; Figure 4 This is a schematic diagram of the overall structure of the central positioning frame from another perspective of Embodiment 1 of this application; Figure 5 This is a schematic diagram of the overall structure of the reinforcement component in Embodiment 1 of this application; Figure 6 This is a cross-sectional view of the feed hopper in Embodiment 1 of this application.
[0026] Explanation of reference numerals in the attached figures: 1. Benchmark pile; 2. Center positioning frame; 21. Positioning seat; 22. Leveling assembly; 221. Chain; 222. Screw; 223. Sprocket; 3. Casting module; 31. Casting cylinder; 4. Positioning hole; 5. Horizontal detection assembly; 6. Foundation pit; 7. Drive mechanism; 71. Drive wheel; 72. Driven wheel; 73. Transmission belt; 74. Rotary handle; 8. Synchronous casting assembly; 81. Connecting pipe; 9. Reinforcing component; 91. Clamp; 92. Reinforcing rod; 10. Sleeve; 11. Screw; 12. Feed hopper; 13. Guide surface; 14. Protective sleeve; 15. Orientation hole; 16. Orientation rod; 17. Connecting frame; 18. Frame; 19. Connecting rod; 20. Support rod; 23. Soil; 24. Positioning cylinder. Detailed Implementation
[0027] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.
[0028] Example 1 This application discloses a construction device for a steel tower foundation, referring to... Figures 1-3 The construction device for the tower foundation includes a reference pile 1, a central positioning frame 2, and a casting module 3. The central positioning frame 2 includes a positioning seat 21 and a leveling component 22 for adjusting the levelness of the positioning seat 21. The reference pile 1 and the leveling component 22 are fixed in the soil 23. The positioning seat 21 is installed on the leveling component 22. The positioning seat 21 is provided with a positioning hole 4 and a level detection component 5. The level detection component 5 is used to detect the levelness of the positioning seat 21. The level detection component 5 includes two spirit levels, one of which is arranged horizontally for detecting the levelness of the positioning seat 21. The horizontal level of the positioning seat 21 is checked, and another level is arranged longitudinally to check the longitudinal level of the positioning seat 21. The reference pile 1 is inserted into the positioning hole 4. The casting module 3 includes multiple casting cylinders 31. In this embodiment, four casting cylinders 31 are used as an example. All four casting cylinders 31 are detachably connected to the positioning seat 21. The distance from each casting cylinder 31 to the center of the positioning hole 4 is equal. The top opening of each casting cylinder 31 is flush. The soil 23 provides a foundation pit 6 for each casting cylinder 31. The casting cylinder 31 is located in the foundation pit 6.
[0029] During the construction of the tower foundation, it is necessary to first survey the center position of the tower foundation. After surveying, the reference pile 1 is fixed in the center soil 23 of the tower foundation, so that the reference pile 1 passes through the positioning hole 4 on the center positioning frame 2. The position of the center positioning frame 2 is positioned by the reference pile 1. The horizontal level of the positioning seat 21 is checked by the horizontal level ruler in the horizontal detection component 5, and the longitudinal level of the positioning seat 21 is checked by the longitudinal level ruler in the horizontal detection component 5. The positioning seat 21 is adjusted to a horizontal state by adjusting the leveling component 22 to ensure that the top openings of each poured cylinder 31 are aligned. When the concrete in each of the vertical cylinders 31 is poured and overflows from each vertical cylinder 31, the upper surface of the concrete in each vertical cylinder 31 is located in the same horizontal plane. This ensures that the upper surface of the support formed after pouring is flush with the upper surface of each vertical cylinder 31 and is located in the same horizontal plane, thus ensuring that the upper surfaces of each support are flush. In addition, the distance from each vertical cylinder 31 to the center of the positioning hole 4 is equal and fixed. Therefore, when pouring concrete into the vertical cylinder 31, it is not necessary to measure and adjust the position of the vertical cylinder 31 before pouring. This improves the accuracy of the distance from the vertical cylinder 31 to the center of the positioning hole 4, saves measurement time, and improves work efficiency.
[0030] Reference Figures 2-4A connecting frame 17 is connected between the four casting vertical cylinders 31. The connecting frame 17 includes a central frame 18 and connecting rods 19 fixedly connected to the four corners of the frame 18. One end of the connecting rod 19 is fixed to the frame 18, and the other end is fixed to the casting vertical cylinder 31. The positioning seat 21 is square. The frame 18 of the connecting frame 17 is fitted on the outside of the square positioning seat 21. The bottom of the square positioning seat 21 is horizontally rotatably connected to a support rod 20 for supporting the connecting frame 17. There are eight support rods 20. Two support rods 20 are installed on each side of the square positioning seat 21 to support the connecting frame 17. The support rods 20 have threaded holes, and the connecting frame 17 has through holes. The connecting frame 17 and the support rods 20 are fixed by screws 11. The screws 11 pass through the through holes on the connecting frame 17 and are threadedly connected to the threaded holes on the support rods 20. During construction, the central positioning seat 21 is first installed on the soil 23 and adjusted to a horizontal position. The connecting frame 17 and the casting cylinder 31 are then installed on the positioning seat 21. During installation, the support rod 20 on the positioning seat 21 is rotated horizontally outward to support the frame 18 on the connecting frame 17. The frame 18 and the support rod 20 are then fixed with screws 11. When the central positioning frame 21 needs to be removed, the screws are removed, and the support rod 20 is rotated inward to pull the central positioning frame 21 upward. The distance between the casting cylinder 31 and the positioning hole 4 on the positioning seat 21 is determined by the length of the connecting rod 19. Since the length of the connecting rod 19 is fixed, the position of the casting cylinder 31 is fixed after installation, and it is not necessary to measure the position of the casting cylinder 31 during pouring.
[0031] Reference Figure 3 The positioning base 21 is also provided with an orientation hole 15, into which an orientation rod 16 is inserted. The orientation rod 16 passes through the orientation hole 15 and is inserted into the soil 23. When determining the position and orientation of the tower, the reference pile 1 and the orientation rod 16 are inserted into the soil 23 respectively. When installing the center positioning frame 2, the reference pile 1 passes through the center positioning hole 4 on the positioning base 21, and the orientation rod 16 passes through the orientation hole 15. The positioning hole 4 is elongated to facilitate the passage of the positioning rod. The position of the positioning base 21 is determined by the cooperation of the center hole and the reference pile 1, and the installation orientation of the positioning base 21 is determined by the cooperation of the orientation hole 15 and the orientation rod 16, so as to ensure that the position and orientation of the tower foundation are in the set position and orientation.
[0032] Reference Figure 3The leveling assembly 22 includes a chain 221, four screws 222, and four corresponding sprockets 223. The four sprockets 223 rotate horizontally on the positioning seat 21. Each screw 222 is threadedly connected to each sprocket 223, and they correspond one-to-one. When the sprocket 223 rotates relative to the screw 222, the sprocket 223 will move up and down along the axis of the screw 222. One end of each screw 222 passes through the positioning seat 21 and is inserted into the soil 23 for fixation. The chain 221 is connected to all four sprockets 223. The positioning seat 21 is also equipped with a drive mechanism 7 for driving one of the four sprockets 223 to rotate, so that when the drive mechanism 7 drives one of the sprockets 223 to rotate, it drives the other sprockets 223 to rotate simultaneously through the chain 221. The drive mechanism 7 includes a drive wheel 71, a driven wheel 72, and a transmission belt 73. The drive wheel 71 is rotatably connected to the positioning seat 21 via bearings. The driven wheel 72 is fixedly connected to one of the four sprockets 223, and is coaxially arranged with the sprocket 223. The transmission belt 73 is wound around the drive wheel 71 and the driven wheel 72. The drive wheel 71 is provided with a handle 74 for driving the drive wheel 71 to rotate. When the handle 74 is rotated, the drive wheel 71 drives the driven wheel 72 to rotate via the transmission belt 73, which in turn drives the chain 221 and the other three sprockets 223 to move via the sprocket 223 fixed coaxially with the driven wheel 72. When all four sprockets 223 rotate simultaneously, they drive the positioning seat 21 to move up and down along the screw 222, thereby adjusting the height of the positioning seat 21. When the center positioning seat 21 needs to be installed on the soil 23, the screw 222 needs to be driven into the soil 23 by using a hammer. The upper end of the screw 222 is covered with a protective sleeve 14 to prevent the hammer from directly hitting the end of the screw 222 and causing damage. After the screw 222 is installed, the protective sleeve 14 can be removed.
[0033] Reference Figure 2 and Figure 5The casting module 3 is also equipped with a synchronous casting component 8, which includes four connecting pipes 81 that connect four casting cylinders 31 in sequence. When concrete is poured into one casting cylinder 31, the concrete can flow through the connecting pipes 81 to the other three casting cylinders 31. Reinforcing components 9 are installed on the connecting pipes 81 to reinforce the connecting pipes 81 and the casting cylinders 31, preventing positional movement of the connecting pipes 81 and the casting cylinders 31 during the casting process, which would cause the support formed after casting to shift positionally. The reinforcing component 9 includes a clamp 91 and a reinforcing rod 92. The clamp 91 is fitted onto the connecting pipe 81, and a sleeve 10 is fixedly connected to the clamp 91. A screw 11 is threaded onto the sleeve 10. One end of the reinforcing rod 92 passes through the sleeve 10 and is inserted and fixed in the soil 23. One end of the screw 11 abuts against the reinforcing rod 92 to fix the clamp 91 and the reinforcing rod 92. When installing the reinforcement component 9, first install the clamp 91 on the connecting pipe 81, then pass the reinforcing rod 92 through the sleeve 10 and insert the reinforcing rod 92 into the soil 23 to continue fixing it, and then tighten the screw 11 to fix the fixing rod and the clamp 91 so that the fixing rod can support the clamp 91 and the connecting pipe 81.
[0034] Reference Figure 2 and Figure 6 One of the four pouring cylinders 31 is detachably connected to a feed hopper 12. When pouring concrete, all the concrete is poured from the feed hopper 12, so that the concrete flows through the feed hopper 12 to the pouring cylinder 31 below, and flows to the other pouring cylinders 31 through the connecting pipes 81 in each pouring cylinder 31.
[0035] Reference Figure 2 and Figure 6 A positioning cylinder 24 is provided between the casting cylinder 31 and the positioning seat 21. The positioning cylinder 24 is fixed on the connecting frame 17 and is bolted to the casting cylinder 31. The positioning cylinder 24 has a guide surface 13 inside. After the reinforcing cage and anchor bolts are placed in the foundation pit 6, the casting cylinder 31 and the positioning cylinder 24 are placed on the reinforcing cage and anchor bolts. Under the action of the guide surface 13 inside the positioning cylinder 24, the reinforcing cage and anchor bolts are guided and positioned, so that the reinforcing cage and anchor bolts are in the set position. In this embodiment, the lengths of the casting cylinders 31 are different because the depth of the foundation pit 6 is different when construction is carried out on the slope. Casting cylinders 31 of different lengths are suitable for foundation pits 6 of different depths. In other embodiments, the lengths of the casting cylinders 31 are the same to be suitable for foundation pits 6 of the same depth.
[0036] The implementation principle of a construction device for a steel tower foundation according to an embodiment of this application is as follows: During construction, the center position and orientation of the steel tower are first determined by surveying. A reference pile 1 is driven into the center of the steel tower, and a directional rod 16 is driven into the tower according to its orientation. The screws 222 of the leveling component 22 are driven into the soil 23, and the positioning seat 21 is adjusted by adjusting the depth of each screw 222. The levelness of the positioning seat 21 is checked by two horizontal and vertical level rulers. The screw 222 on the side that is higher is tapped to insert it deeper into the soil, thereby lowering its position until the positioning seat 21 is adjusted to a horizontal state. The foundation pits 6 are excavated, and steel cages and anchor bolts of different heights are placed in the foundation pits 6 according to the different depths of the foundation pits 6. Casting cylinders 31 are installed around each reinforcing cage and anchor bolt. Connecting frames 17 are installed and fixed to positioning seats 21. The casting cylinders 31 and positioning cylinders 24 are then fixedly connected. The overall height of the positioning seats 21 is adjusted so that the upper opening of each casting cylinder 31 is at the designed height. A hopper 12 is fitted onto one of the casting cylinders 31, and concrete is poured into it through the hopper 12. During the initial pour, the concrete covers the bottom of each foundation pit 6, and the upper surface of the concrete is higher than the lower opening of the casting cylinder 31, thus sealing the lower opening. After the concrete solidifies, a second pour is performed, filling each casting cylinder 31 completely, until concrete overflows from the top of the cylinder opening. After the concrete solidifies, the reference pile 1, directional rod 16, central positioning frame 2, and reinforcing member 9 are removed.
[0037] Example 2 This application discloses a construction method for a steel tower foundation, referring to... Figure 1 The construction method for the tower foundation includes the following steps: S1: Determine the position of the reference pile 1 by surveying and driving the reference pile 1 into the ground to determine the center position of the tower; according to the surveyed tower installation direction, drive the directional rod 16 into the edge of the reference pile 1 to determine the direction of the tower foundation.
[0038] S2: Determine the location of each foundation pit 6 in sequence according to the position of the reference pile 1 and the position of the directional rod 16, and excavate each foundation pit 6 downwards; S3: Pass the positioning hole 4 on the central positioning frame 2 through the reference pile 1 and the directional rod 16 through the directional hole 15 to install the central positioning frame 2 on the soil 23. Use the horizontal and vertical level on the horizontal detection component 5 to determine the level of the positioning seat 21. Adjust the depth of each screw 222 in the leveling component 22 according to the level of the positioning seat 21 until the positioning seat 21 on the positioning frame is adjusted to a horizontal state. Insert each cast-in-place cylinder 31 into each foundation pit 6. S4: Pour each casting cylinder 31 once to make the concrete in the foundation pit 6 level with the concrete in the casting cylinder 31. S5. After the concrete poured in the first pour has solidified, a second pour is made on each pouring cylinder 31 so that the pouring cylinder 31 is filled with concrete. S6. After the concrete has hardened, remove the reference pile 1 and the central positioning frame 2.
[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A construction device for a steel tower foundation, characterized in that: The system includes a reference pile (1), a central positioning frame (2), and a casting module (3). The central positioning frame (2) includes a positioning seat (21) and a leveling component (22) for adjusting the level of the positioning seat (21). The reference pile (1) and the leveling component (22) are fixed in the soil (23). The positioning seat (21) is mounted on the leveling component (22). The positioning seat (21) has a positioning hole (4) and a level detection component (5). The level detection component (5) is used to detect the level of the positioning seat (21). 21) The levelness of the reference pile (1) is inserted in the positioning hole (4). The casting module (3) includes multiple casting cylinders (31). Each casting cylinder (31) is detachably connected to the positioning seat (21). The distance from each casting cylinder (31) to the center of the positioning hole (4) is equal. The top opening of each casting cylinder (31) is flush. The soil (23) provides a foundation pit (6) for each casting cylinder (31). The casting cylinder (31) is located in the foundation pit (6).
2. The construction device for a steel tower foundation according to claim 1, characterized in that: The leveling assembly (22) includes a chain (221), multiple screws (222), and multiple sprockets (223) corresponding to the multiple screws (222). The multiple sprockets (223) rotate horizontally on the positioning seat (21). Each screw (222) is threadedly connected to each sprocket (223) and they correspond one to one. One end of the screw (222) passes through the positioning seat (21) and is fixed in the soil (23). The chain (221) is connected to the multiple sprockets (223) at the same time. The positioning seat (21) is also equipped with a drive mechanism (7) for driving one of the multiple sprockets (223) to rotate, so that when the drive mechanism (7) drives one of the sprockets (223) to rotate, it drives the other sprockets (223) to rotate simultaneously through the chain (221).
3. The construction device for a steel tower foundation according to claim 2, characterized in that: The drive mechanism (7) includes a drive wheel (71), a driven wheel (72), and a transmission belt (73). The drive wheel (71) is rotatably connected to the positioning seat (21). The driven wheel (72) is fixedly connected to one of the sprockets (223) and the driven wheel (72) is coaxially arranged with the sprocket (223). The transmission belt (73) is wound around the drive wheel (71) and the driven wheel (72). The drive wheel (71) is provided with a handle (74) for driving the drive wheel (71) to rotate.
4. The construction device for a steel tower foundation according to claim 1, characterized in that: The casting module (3) is also provided with a synchronous casting component (8), which includes multiple connecting pipes (81). The multiple connecting pipes (81) sequentially connect multiple casting cylinders (31) so that the concrete in the casting cylinder (31) can flow through the connecting pipes (81) to another casting cylinder (31).
5. The construction device for a steel tower foundation according to claim 4, characterized in that: The connecting pipe (81) is equipped with a reinforcing member (9) to reinforce the connecting pipe (81). The reinforcing member (9) includes a clamp (91) and a reinforcing rod (92). The clamp (91) is fitted onto the connecting pipe (81). A sleeve (10) is fixedly connected to the clamp (91). A screw (11) is threaded onto the sleeve (10). One end of the reinforcing rod (92) passes through the sleeve (10) and is inserted and fixed in the soil (23). One end of the screw (11) abuts against the reinforcing rod (92) to fix the clamp (91) and the reinforcing rod (92).
6. The construction device for a steel tower foundation according to claim 4, characterized in that: One of the plurality of casting cylinders (31) is detachably connected to a feed hopper (12) so that concrete enters each of the casting cylinders (31) through the feed hopper (12) and the connecting pipe (81).
7. The construction device for a steel tower foundation according to claim 1, characterized in that: A positioning cylinder (24) is provided between the casting cylinder (31) and the positioning seat (21). The positioning cylinder (24) is provided with a guide surface (13) for guiding and positioning the anchor bolts that need to be placed in the casting cylinder (31) and fixed to the reinforcing cage.
8. The construction device for a steel tower foundation according to claim 2, characterized in that: The upper end of the screw (222) is fitted with a protective sleeve (14).
9. The construction device for a steel tower foundation according to claim 1, characterized in that: The positioning seat (21) is also provided with a directional hole (15), and a directional rod (16) is inserted into the directional hole (15). The directional rod (16) passes through the directional hole (15) and is inserted into the soil (23).
10. A method for constructing a steel tower foundation, characterized in that, Using the construction apparatus according to any one of claims 1-9, the following steps are included: S1: Determine the position of the reference pile (1) by surveying and drive the reference pile (1) into the ground; S2: Determine the location of each of the foundation pits (6) in sequence according to the location of the reference pile (1), and excavate each of the foundation pits (6); S3: Pass the central positioning frame (2) through the reference pile (1) and install it on the soil (23), and adjust the positioning seat (21) on the positioning frame to a horizontal state, and insert each of the casting cylinders (31) into each of the foundation pits (6); S4: Each of the casting cylinders (31) is poured once, so that the concrete in the foundation pit (6) is flush with the concrete in the casting cylinder (31); S5. After the concrete poured in the first pour has solidified, a second pour is carried out on each pouring cylinder (31) so that the pouring cylinder (31) is filled with concrete. S6. After the concrete has solidified, remove the reference pile (1) and the central positioning frame (2).