Controllable rigidity adjusting device for piled raft foundation

Abstract

The utility model relates to the technical field of piled raft foundations, in particular to a controllable rigidity adjusting device for a piled raft foundation, which comprises a mounting seat, a supporting seat is arranged at the top end of the mounting seat, a supporting column is arranged at the top end of the supporting seat, a pressing block is arranged at the top end of the supporting column, and a lifting groove is formed in the bottom end of the pressing block. A lifting groove is formed in the top end of the supporting seat, a limiting groove is formed in the top end of the lifting groove, an adjusting groove is formed in the top end of the supporting column, a fastening hole is formed between the bottom end of the adjusting groove and one side of the supporting seat, and an inclined plate is arranged at the bottom end of the adjusting groove. By means of the design, the device can dynamically respond to changes of external conditions such as geological changes or building load increase, and therefore the rigidity of the pressing block is automatically adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of pile-raft foundations, and particularly to a controllable stiffness adjustment device for pile-raft foundations. Background Art

[0002] As is well known, the pile-raft foundation is a common form of building engineering foundation. Especially in the case of bearing heavy loads or high-rise buildings, it can effectively disperse the loads of the building and improve the stability and safety of the building. However, traditional pile-raft foundations have certain limitations, especially in terms of their insufficient ability to cope with different geological conditions and changes in building loads. Traditional pile-raft foundation designs are usually based on the concept of fixed stiffness, that is, once the foundation structure is designed, its stiffness cannot be changed. This design is effective in some cases, but it is not flexible enough when facing different geological conditions or when the building loads change over time.

[0003] Foundations with fixed stiffness may experience stress concentration or other structural problems when dealing with soil settlement, groundwater level changes, seasonal temperature fluctuations, etc., thus affecting the long-term stability and safety of the building.

[0004] During different stages of construction projects, the stiffness requirements for the foundation may vary. For example, in the initial construction stage, a lower stiffness may be required to adapt to the compaction process of the soil; while in the later stage, as the building weight increases, a higher stiffness may be needed to provide better support. Traditional fixed-stiffness designs cannot adapt to these changes, resulting in the need for additional measures to compensate for insufficient foundation stiffness in some stages. If the stiffness of the foundation is determined at the design stage and cannot be adjusted, it will be very difficult to make adjustments when problems are found during the later maintenance process. This will not only increase the maintenance cost but may also shorten the service life of the building. In addition, if the building needs to be expanded or renovated during use, the original foundation may no longer be applicable and needs to be re-evaluated and redesigned, which is also a time-consuming and laborious process. Therefore, it is necessary to propose a solution to this technical problem. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a controllable stiffness adjustment device for pile-raft foundations.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present utility model provides the following technical solution: A controllable stiffness adjustment device for a pile-raft foundation, comprising a mounting base, a support base is provided at the top of the mounting base, a support column is provided at the top of the support base, a pressing block is provided at the top of the support column, a lifting groove is opened at the bottom of the pressing block, a limiting groove is opened at the top of the lifting groove, an adjustment groove is opened at the top of the support column, a fastening hole is opened between the bottom of the adjustment groove and one side of the support base, a sloping plate is provided at the bottom of the adjustment groove, a support spring is provided between the sloping plate and the top of the limiting groove, a limiting plate is provided between the limiting groove and the support column, an adjustment box is provided on the mounting base, a positioning mechanism and a locking mechanism are provided between the adjustment box and the mounting base, a first telescopic mechanism is provided inside the adjustment box, an opening is opened on one side of the adjustment box, the output end of the first telescopic mechanism passes through the opening, a sloping block is provided at the output end of the first telescopic mechanism, a tapered column is provided at the top of the adjustment box, and a transmission line and an opening are provided on the tapered column.

[0009] Further, the present utility model is improved in that the locking mechanism includes a locking groove and a locking box, the locking groove is opened at the bottom of the adjustment box, a clamping groove is opened on one side of the locking groove, the locking box is installed at the top of the mounting base, a locking hole is opened at one end of the locking box, an inclined column is provided on the locking hole, and a second telescopic mechanism is provided inside the locking box, and the output end of the second telescopic mechanism is connected to the inclined column.

[0010] Further, the present utility model is improved in that a sliding groove is opened on one side of the adjustment groove, a sliding block is provided on one side of the sloping plate, and the sliding block is slidably connected to the sliding groove.

[0011] Further, the present utility model is improved in that the positioning mechanism includes a positioning hole and a positioning column, the positioning hole is opened at the bottom of the adjustment box, the positioning column is installed at the top of the mounting base, and the positioning column abuts against the positioning hole.

[0012] Further, the present utility model is improved in that there are multiple positioning mechanisms and they are arranged in an array.

[0013] Further, the present utility model is improved in that both the first telescopic mechanism and the second telescopic mechanism are electric telescopic rods.

[0014] Further, the present utility model is improved in that the positioning column is adapted to the positioning hole.

[0015] Further, the present utility model is improved in that the support spring is an alloy spring.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a controllable stiffness adjustment device for a pile-raft foundation, which has the following beneficial effects:

[0018] In this controllable stiffness adjustment device for a pile-raft foundation, the first telescopic mechanism affects the state of the support spring by contacting and pushing the inclined plate through the inclined block. This design enables the device to dynamically respond to changes in external conditions, such as geological changes or an increase in building load, etc., thereby automatically adjusting the rigidity of the pressing block and ensuring the adaptability of the pile-raft foundation. When it is necessary to increase the rigidity, the first telescopic mechanism pushes the inclined block to move the inclined plate upward, compressing the support spring and enhancing the rigidity of the pressing block; conversely, when it is necessary to reduce the rigidity, the telescopic mechanism acts in the reverse direction, increasing the space of the support spring and reducing the rigidity of the pressing block. This two-way adjustment mechanism ensures that the foundation structure can flexibly adjust its characteristics according to the actual situation. Since the adjustment box can be conveniently positioned and fixed on the mounting seat, this provides convenience for subsequent inspection and maintenance work. When necessary, technicians can quickly disassemble the adjustment box for inspection or replacement of parts, reducing the maintenance time and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural view of the utility model Figure 1 ;

[0020] Figure 2 is a schematic structural view of the utility model Figure 2 ;

[0021] Figure 3 is a front half-sectional view of the structure of the utility model;

[0022] Figure 4 is of the utility model Figure 1 is an enlarged front half-sectional view of the structure of the adjustment box in the utility model.

[0023] In the figure: 1, mounting seat; 2, support seat; 3, support column; 4, pressing block; 5, inclined plate; 6, support spring; 7, limiting plate; 8, adjustment box; 9, first telescopic mechanism; 10, inclined block; 11, conical column; 12, transmission line; 13, opening; 14, locking box; 15, card slot; 16, inclined column; 17, second telescopic mechanism; 18, slider; 19, positioning column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-4 , the utility model is a controllable stiffness adjustment device for a pile-raft foundation, including a mounting base 1. A support base 2 is provided at the top of the mounting base 1. A support column 3 is provided at the top of the support base 2. A pressing block 4 is provided at the top of the support column 3. A lifting groove is opened at the bottom of the pressing block 4. A limiting groove is opened at the top of the lifting groove. An adjusting groove is opened at the top of the support column 3. A fastening hole is opened between the bottom end of the adjusting groove and one side of the support base 2. An inclined plate 5 is provided at the bottom end of the adjusting groove. A support spring 6 is provided between the inclined plate 5 and the top end of the limiting groove. A limiting plate 7 is provided between the limiting groove and the support column 3. An adjusting box 8 is provided on the mounting base 1. A positioning mechanism and a locking mechanism are provided between the adjusting box 8 and the mounting base 1. A first telescopic mechanism 9 is provided inside the adjusting box 8. An opening is opened on one side of the adjusting box 8. The output end of the first telescopic mechanism 9 passes through the opening. An inclined block 10 is provided at the output end of the first telescopic mechanism 9. A conical column 11 is provided at the top of the adjusting box 8. A transmission line 12 and an opening 13 are provided on the conical column 11. In this embodiment, the mounting base 1 is arranged on the pile-raft foundation, the pressing block 4 is installed with construction equipment, the adjusting box 8 is positioned on the mounting base 1 through the positioning mechanism, the adjusting box 8 is fixed on the mounting base 1 through the locking mechanism, the transmission line 12 of the conical column 11 is convenient for controlling the first telescopic mechanism 9, the output end of the first telescopic mechanism 9 uses the inclined block 10 to contact and push the inclined plate 5, the inclined plate 5 is extruded and moves upward, so that the space of the support spring 6 is reduced, the support spring 6 is extruded and deformed, increasing the rigidity of the pressing block 4. By moving the inclined block 10 in the reverse direction at the output end of the first telescopic mechanism 9, the space of the support spring 6 is increased, thereby reducing the rigidity of the pressing block 4, realizing the automatic adjustment of the stiffness of the pile-raft foundation of this structure. The limiting plate 7 in the limiting groove can prevent the support column 3 from leaving the lifting groove.

[0026] In this solution, the locking mechanism includes a locking groove and a locking box 14. The locking groove is opened at the bottom end of the adjusting box 8. A clamping groove 15 is opened on one side of the locking groove. The locking box 14 is installed at the top of the mounting base 1. A locking hole is opened at one end of the locking box 14. An inclined column 16 is provided on the locking hole. A second telescopic mechanism 17 is provided inside the locking box 14. The output end of the second telescopic mechanism 17 is connected to the inclined column 16. When the adjusting box 8 is positioned on the mounting base 1 through the positioning mechanism, at this time the locking box 14 is located in the locking groove. By controlling the output end of the second telescopic mechanism 17 to linearly move the inclined column 16 downward, the inclined column 16 abuts in the clamping groove 15. Through the inclined part at one end of the inclined column 16, it is convenient for the inclined column 16 to be inserted into the clamping groove 15. At this time, the inclined block 10 at the output end of the first telescopic mechanism 9 is aligned with the opening

[0027] In this solution, a sliding groove is provided on one side of the adjustment groove. A slider 18 is provided on one side of the inclined plate 5. The slider 18 is slidably connected to the sliding groove. When the inclined plate 5 moves, it drives the slider 18 to move. The slider 18 slides linearly in the sliding groove, so that the inclined plate 5 can move linearly more stably.

[0028] In this solution, the positioning mechanism includes a positioning hole and a positioning column 19. The positioning hole is opened at the bottom end of the adjustment box 8. The positioning column 19 is installed at the top end of the mounting seat 1. The positioning column 19 abuts against the positioning hole. By the positioning column 19 abutting against the positioning hole at the bottom end of the adjustment box 8, the adjustment box 8 can be accurately positioned on the mounting seat 1.

[0029] In this solution, multiple positioning mechanisms are provided and arranged in an array. By providing multiple positioning mechanisms arranged in an array, the adjustment box 8 can be better positioned on the mounting seat 1.

[0030] In this solution, both the first telescopic mechanism 9 and the second telescopic mechanism 17 are electric telescopic rods. Due to the characteristics of high movement precision and strong stability of the electric telescopic rods, they can be used with high precision.

[0031] In this solution, the positioning column 19 is adapted to the positioning hole. By the positioning column 19 being adapted to the positioning hole, the adjustment box 8 can be positioned on the mounting seat 1 more stably and accurately.

[0032] In this solution, the support spring 6 is an alloy spring. Due to the excellent elastic support force of the alloy spring, it can better stably support the pressing block 4.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A controllable stiffness adjustment device for a pile-raft foundation, comprising a mounting base (1), and a support base (2) is provided at the top of the mounting base (1), characterized in that, The top of the support base (2) is provided with a support column (3). The top of the support column (3) is provided with a pressing block (4). The bottom end of the pressing block (4) is provided with a lifting groove. The top end of the lifting groove is provided with a limiting groove. The top end of the support column (3) is provided with an adjusting groove. A fastening hole is provided between the bottom end of the adjusting groove and one side of the support base (2). The bottom end of the adjusting groove is provided with an inclined plate (5). A support spring (6) is provided between the inclined plate (5) and the top end of the limiting groove. A limiting plate (7) is provided between the limiting groove and the support column (3). An adjusting box (8) is provided on the mounting base (1). A positioning mechanism and a locking mechanism are provided between the adjusting box (8) and the mounting base (1). A first telescopic mechanism (9) is provided inside the adjusting box (8). An opening is provided on one side of the adjusting box (8). The output end of the first telescopic mechanism (9) passes through the opening. The output end of the first telescopic mechanism (9) is provided with an inclined block (10). A conical column (11) is provided on the top of the adjusting box (8). A transmission line (12) and an opening (13) are provided on the conical column (11).

2. The controllable stiffness adjustment device for a pile-raft foundation according to claim 1, characterized in that The locking mechanism includes a locking groove and a locking box (14). The locking groove is provided at the bottom end of the adjusting box (8). A clamping groove (15) is provided on one side of the locking groove. The locking box (14) is installed on the top of the mounting base (1). A locking hole is provided at one end of the locking box (14). An inclined column (16) is provided on the locking hole. A second telescopic mechanism (17) is provided inside the locking box (14). The output end of the second telescopic mechanism (17) is connected to the inclined column (16).

3. The controllable stiffness adjustment device for a pile-raft foundation according to claim 2, wherein A sliding groove is provided on one side of the adjusting groove. A sliding block (18) is provided on one side of the inclined plate (5). The sliding block (18) is slidably connected to the sliding groove.

4. A controllable stiffness adjustment device for a pile-raft foundation according to claim 3, characterized in that The positioning mechanism includes a positioning hole and a positioning column (19). The positioning hole is provided at the bottom end of the adjusting box (8). The positioning column (19) is installed on the top of the mounting base (1). The positioning column (19) abuts against the positioning hole.

5. A controllable stiffness adjustment device for a pile-raft foundation according to claim 4, characterized in that, There are multiple positioning mechanisms and they are arranged in an array.

6. The controllable stiffness adjustment device for a pile-raft foundation according to claim 5, characterized in that, Both the first telescopic mechanism (9) and the second telescopic mechanism (17) are electric telescopic rods.

7. A controllable stiffness adjustment device for a pile-raft foundation according to claim 6, characterized in that The positioning column (19) is adapted to the positioning hole.

8. A controllable stiffness adjustment device for a pile-raft foundation according to claim 7, characterized in that The support spring (6) is an alloy spring.

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