Reinforcing steel bar anchoring type pile head adjusting device
The steel bar anchored pile head adjustment device addresses construction accuracy issues by enabling adjustable positioning and integration with the pipe pile, ensuring reliable connections and improved stability through a circular tube and dome plate design with a grouting mechanism.
Patent Information
- Application Number
- CN202420637632.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-03-29
AI Technical Summary
Existing pile head adjustment devices for box-type transformer foundations face issues with construction accuracy, particularly horizontal and elevation deviations, leading to unreliable connections between the pipe pile and steel beam, with existing solutions failing to address both types of deviations effectively.
A steel bar anchored pile head adjustment device featuring a circular tube, dome plate, and adjusting bolts, allowing for adjustable positioning and integration with the pipe pile, ensuring full contact and load transfer, and incorporating a grouting mechanism for stability.
The device provides reliable and quick connections by adjusting for both horizontal and elevation deviations, enhancing stability and reducing construction time by forming an integral connection between the pipe pile and steel beam.
Smart Images
Figure CN222295107U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of box-type transformer foundation, in particular to a steel bar anchored pile head adjusting device. Background Art
[0002] At present, the foundation of a box-type transformer is usually formed by a lower pipe pile and an upper steel beam. However, due to the problem of construction accuracy, the pipe pile construction usually has a certain horizontal position deviation and elevation deviation. This makes it difficult to install the upper steel beam. If it is installed directly, the flatness of the upper steel beam will be affected and there will be a risk of connection reliability. Therefore, a universal pile head adjustment device is needed to achieve reliable and quick connection between the pipe pile and the steel beam.
[0003] At present, the pile head adjustment device usually needs to measure the position deviation and elevation deviation after the construction is completed, and then the pile head adjustment device is differentiatedly designed and processed according to the measured construction data. The cycle is long, which affects the progress of the construction.
[0004] The Chinese utility model patent, CN219973270U, discloses a pile head connection device suitable for the precast pile foundation of the wind farm collector line transmission tower, which solves the problem of the pile top elevation deviation of the precast pile by setting the adjustable bolt.
[0005] This solution has the following shortcomings:
[0006] First, the core pouring of the concrete is limited to the interior of the prefabricated pipe piles, and the pile head connectors above the pipe piles are not poured. The pile head connectors are only connected to the pipe piles by the pre-buried steel pipes at the pile heads, which do not form a whole and have poor stability.
[0007] Secondly, this solution can only solve the problem of the deviation between the pile head elevation and the design, but cannot solve the problem of the horizontal position deviation of the pipe pile. When the horizontal position of the pipe pile deviates, the steel beam on the top of the pipe pile cannot ensure full contact with each pipe pile, and the load borne by the steel beam cannot be effectively transferred to the pipe pile foundation. Utility Model Content
[0008] In the above background, the utility model proposes a steel bar anchored pile head adjustment device, including a circular tube, a dome plate, a bottom plate, and an adjusting bolt. The bottom plate is installed inside the circular tube, the adjusting bolt is installed on the circumference of the bottom plate and arranged corresponding to the top of the pipe pile, the dome plate is installed on the top of the circular tube, the dome plate is eccentrically arranged relative to the circular tube, and the dome plate is provided with an opening corresponding to the pipe pile and with a diameter smaller than the outer diameter of the pipe pile.
[0009] The concept of the utility model is that: through the relative eccentricity design of the dome plate and the round tube, when the round tube is sleeved on the top of the pipe pile, the position of the dome plate is changed by rotating the round tube. Even if the horizontal position of the pipe pile deviates, the dome plate can approach the original design position of the pipe pile within a certain adjustment range, and the steel beam above it is fully in contact with the pipe pile foundation through the dome plate, ensuring that the load borne by the steel beam is transmitted to the pipe pile foundation. In addition, through the improvement of the connection device structure, the adjustment bolt is also within the grouting range, so that it forms an integral and stable connection with the pipe pile.
[0010] Preferably, the steel bar anchored pile head adjustment device further comprises a stiffening plate, and the stiffening plate is installed between the bottom of the dome plate and the outer wall of the circular tube.
[0011] Preferably, the number of the stiffening plates is 4, which are arranged at equal intervals in the circumferential direction.
[0012] Preferably, the number of the adjusting bolts is 4, which are arranged at equal intervals in the circumferential direction, and the nuts of the adjusting bolts are welded to the base plate.
[0013] Preferably, the bolt head height of the adjusting bolt is greater than 50 mm.
[0014] Preferably, the dome plate is eccentrically arranged relative to the circular tube in such a manner that the distance between the farthest point and the nearest point on the circumference of the dome plate and the center of the circular tube differs by 100-150 mm.
[0015] Preferably, the side surface of the circular tube is further provided with a drainage hole, and the drainage hole is arranged above the bottom plate.
[0016] Preferably, the steel bar anchored pile head adjustment device also includes a grouting device, which includes an anchoring steel bar and a support plate, wherein both ends of the anchoring steel bar are respectively connected to the bottom plate and the support plate, and the diameter of the support plate is the inner diameter of the pipe pile.
[0017] Preferably, a grouting hole is provided at the center of the base plate.
[0018] Preferably, the number of the anchoring steel bars is 4, which are arranged at equal intervals in the circumferential direction.
[0019] The beneficial effect of the utility model is that compared with the prior art, the steel bar anchored pile head adjustment device of the utility model solves the problems of poor construction accuracy and long construction time of the connection between the lower pipe pile and the upper steel beam in the box-type transformer foundation construction through structural improvements, and is adaptable to the situation of horizontal position deviation of the pipe pile and pile top elevation deviation. At the same time, the connecting device is integrally connected to the pipe pile and the steel beam, thereby improving the overall stability.
[0020] The device of the utility model is suitable for use in power infrastructure using a box-type transformer foundation. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 The overall structural schematic diagram of the steel bar anchored pile head adjusting device is shown;
[0022] Figure 2 Show Figure 1 A top view of
[0023] Figure 3 A schematic diagram showing the horizontal position adjustment of the pipe pile by the steel bar anchored pile head adjustment device;
[0024] Figure 4 A schematic diagram showing the use of a steel bar anchored pile head adjustment device to adjust the top elevation position of a pipe pile.
[0025] The reference numerals are as follows:
[0026] 1. Round tube, 2. Dome plate, 3. Bottom plate, 4. Adjusting bolts, 5. Stiffening plate, 6. Drainage holes, 7. Anchor steel bars, 8. Support plate, 9. Grouting holes, 10. Upper steel beam, 11. Pipe piles, 12. Grouting material. DETAILED DESCRIPTION
[0027] Figure 1 The utility model provides a steel bar anchored pile head adjusting device. Figure 2 for Figure 1 Top view of the .
[0028] like Figure 1 , Figure 2 As shown, a connection adjustment device is provided between the pile head of the pipe pile 11 and the upper steel beam 10 to adjust the horizontal deviation and elevation deviation of the pipe pile construction.
[0029] The adjusting device comprises a round tube 1 which is sleeved on the top of the pipe pile 11 and has an inner diameter slightly larger than an outer diameter of the pipe pile 11 . The length of the round tube 1 satisfies the adjustment range of the allowable deviation of the top elevation of the pipe pile 11 .
[0030] The top of the circular tube 1 is a dome plate 2, and the dome plate 2 can be welded to the upper steel beam above it. The dome plate 2 is provided with an opening concentric with the circular tube 1, and the diameter of the opening is slightly smaller than the outer diameter of the pipe pile. The purpose of setting the opening is to facilitate the adjustment of the bolt height and grouting operation. The dome plate 2 is relatively eccentric to the circular tube 1. According to the requirements of the allowable value of the horizontal position deviation of the pipe pile, the distance between the farthest point and the nearest point on the circumference of the dome plate 2 and the center of the circular tube 1 differs by 100-150mm, that is, under the condition of rotating the circular tube 1, the actual horizontal position of the dome plate 2 has an adjustable range of 100-150mm.
[0031] A bottom plate 3 is arranged inside the circular tube 1, and four adjusting bolts 4 are arranged at equal intervals on the circumference of the bottom plate 3. The nuts of the adjusting bolts 4 are welded to the bottom plate 3. The bottom of the adjusting bolts 4 contacts the pile top of the pipe pile 11. The adjusting bolts 4 pass through the bottom plate 3 and the height of the bolt head is greater than 50 mm, which meets the adjustment requirements of the allowable deviation range of the pile top elevation. The four adjusting bolts 4 arranged at equal intervals can also adjust the horizontal position of the dome plate 2 in a small range to keep it level.
[0032] Four stiffening plates 5 are arranged at equal intervals between the bottom of the dome plate 2 and the outer wall of the circular tube 1 . The function of the stiffening plates 5 is to ensure that the load of the upper steel beam 10 is transferred to the pipe pile 11 through the circular tube 1 .
[0033] A drainage hole 6 is also provided on the side of the circular tube 1 above the bottom plate 3 so that drainage can be timely achieved when rainwater is encountered.
[0034] A grouting device is also provided on the steel bar anchored pile head adjustment device, which is used to connect the adjustment device with the pipe pile as a whole to improve stability. The grouting device includes four anchoring steel bars 7 arranged at equal intervals in the circumferential direction. The upper ends of the anchoring steel bars 7 are welded to the bottom plate 3, and the lower ends are welded to the support plate 8. The diameter of the support plate 8 is consistent with the inner diameter of the pipe pile 11. The setting of the support plate 8 prevents the grouting material 12 from leaking into the pipe pile 11, forming a grouting interval between the bottom plate 3 and the support plate 8. A grouting hole 9 is provided in the middle of the bottom plate 3, and the grouting material 12 is poured from here.
[0035] Figure 3 , Figure 4 A schematic diagram of the horizontal and vertical position adjustment of the steel bar anchored pile head adjustment device is given. The specific construction process of the steel bar anchored pile head adjustment device is as follows:
[0036] First, according to the measured deviation of the horizontal position of the pipe pile 11, the round tube 1 of the device is sleeved on the top of the pipe pile 11 and rotated appropriately so that the dome plate 2 is in a horizontal position close to the designed pipe pile position. Then, according to the measured deviation of the pile top elevation of the pipe pile 11, the adjusting bolt 4 is adjusted so that the device reaches the designed elevation and the dome plate 2 remains horizontal.
[0037] After checking that the horizontal and vertical positions are qualified, grouting material 12 is poured into the grouting holes 9 on the bottom plate 3 to form an integral body of the adjusting device and the pipe pile 11. After the grouting material 12 reaches the designed strength, the upper steel beam 10 is installed by welding to the dome plate 2.
[0038] The above description of the proposed embodiments enables those skilled in the art to implement or use the utility model. It should be understood that the features disclosed in the above embodiments can be used alone or in combination, except where otherwise specified. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model disclosed herein is not limited to the specific embodiments disclosed, but is intended to cover modifications within the spirit and scope of the utility model as defined in the appended claims.
Claims
1. A steel bar anchored pile head adjustment device, comprising a round tube, a dome plate, a bottom plate, and an adjustment bolt, characterized in that: The bottom plate is installed inside the circular tube, the adjusting bolts are installed on the circumference of the bottom plate and arranged corresponding to the top of the pipe pile, the dome plate is installed on the top of the circular tube, the dome plate is eccentrically arranged relative to the circular tube, and the dome plate is provided with an opening corresponding to the pipe pile and having a diameter smaller than the outer diameter of the pipe pile.
2. The steel bar anchored pile head adjustment device according to claim 1, characterized in that: The steel bar anchored pile head adjustment device also includes a stiffening plate, which is installed between the bottom of the dome plate and the outer wall of the circular tube.
3. The steel bar anchored pile head adjustment device according to claim 2, characterized in that: The number of the stiffening plates is 4, which are arranged at equal intervals in the circumferential direction.
4. The steel bar anchored pile head adjustment device according to claim 1, characterized in that: The number of the adjusting bolts is 4, which are arranged at equal intervals in the circumferential direction, and the nuts of the adjusting bolts are welded to the bottom plate.
5. The steel bar anchored pile head adjustment device according to claim 4, characterized in that: The bolt head height of the adjusting bolt is greater than 50 mm.
6. The steel bar anchored pile head adjustment device according to claim 1, characterized in that: The eccentric arrangement of the dome plate relative to the circular tube specifically includes: a distance between the farthest point and the nearest point on the circumference of the dome plate and the center of the circular tube differs by 100-150 mm.
7. The steel bar anchored pile head adjustment device according to claim 1, characterized in that: The side surface of the circular tube is also provided with a drainage hole, and the drainage hole is arranged at a position above the bottom plate.
8. The steel bar anchored pile head adjustment device according to claim 1, characterized in that: The steel bar anchored pile head adjustment device also includes a grouting device, which includes an anchoring steel bar and a support plate. The two ends of the anchoring steel bar are respectively connected to the bottom plate and the support plate, and the diameter of the support plate is the inner diameter of the pipe pile.
9. The steel bar anchored pile head adjustment device according to claim 8, characterized in that: A grouting hole is provided at the center of the bottom plate.
10. The steel bar anchored pile head adjustment device according to claim 8, characterized in that: The number of the anchor steel bars is 4, which are arranged at equal intervals in the circumferential direction.