A composite ground settlement reinforcement structure

Abstract

The utility model relates to reinforcing structure technical field discloses a kind of composite foundation settlement reinforcing structure, including reinforcing pile, reinforcing pile bottom is equipped with conical head, reinforcing pile inside is fixed with strip-shaped frame, strip-shaped frame is equipped with guide cylinder in array, positioning shaft is worn in guide cylinder, there is the drive mechanism of drive positioning shaft along guide cylinder axial movement in strip-shaped frame;Drive mechanism includes driving rod, adjusting assembly and connecting component, adjusting assembly drive driving rod moves along the length direction of strip-shaped frame, connecting component converts the radial movement of positioning shaft and makes it extend outside reinforcing pile by driving rod movement.This utility model, effectively solve the displacement problem of pile body caused by the insufficient friction of traditional fixed column and foundation, conical head reduces insertion resistance, strip-shaped frame provides stable frame, guide cylinder is accurately guided, drive mechanism makes positioning shaft extend and insert foundation, increase friction and connection strength, avoid pile body deviation, applicable to weak, saturated or uneven settlement soil layer.

Description

TECHNICAL FIELD

[0001] The utility model relates to reinforcing structure technical field especially relates to a composite foundation settlement reinforcing structure. BACKGROUND

[0002] In the field of civil engineering, composite foundation settlement reinforcement is a key link to ensure the safety and stability of buildings and structures. For soft, saturated or unevenly settled soil layers, the foundation is prone to excessive settlement, collapse and other problems due to insufficient bearing capacity, which in turn leads to deformation, cracking of the upper structure, and even affects its normal use and service life. Therefore, improving the foundation conditions, controlling the settlement difference, and enhancing the bearing capacity and anti-deformation ability of the foundation through reasonable reinforcement structure have become an important demand in engineering practice. The composite foundation settlement reinforcement structure can effectively transfer the upper load to the deep stable soil layer through targeted design, limit the deformation of the soil layer, and ensure the balance and safety of the overall structure, playing an irreplaceable role in various construction projects.

[0003] In the prior art, the fixed column is a common composite foundation settlement reinforcement structure, which can reduce uneven settlement of the foundation through the rigid support of the pile body, but has obvious defects in actual application. The traditional fixed column mainly relies on the friction between the pile body and the foundation to achieve stability, but such friction is often not ideal: the adhesion or resistance between the pile body and the soil layer is weak, which can easily cause displacement of the pile body under stress or soil layer changes, affecting the stability of the reinforcement effect. Especially when the soil conditions change or the foundation soil is relatively soft, the frictional resistance between the pile body and the foundation will be further reduced, which may cause the pile body to deviate or move, resulting in a decrease in the effectiveness of the entire reinforcement system, making it difficult to reliably limit the settlement of the foundation for a long period of time, and unable to meet the reinforcement requirements under complex geological conditions. SUMMARY

[0004] To make up for the above shortcomings, the utility model provides a composite foundation settlement reinforcement structure, which aims to improve the adhesion or resistance between the pile body and the soil layer, which is weak and can easily cause displacement of the pile body under stress or soil layer changes, affecting the stability of the reinforcement effect.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a composite foundation settlement reinforcement structure, comprising a reinforcing pile, the reinforcing pile being provided with a conical head at the bottom, a strip-shaped frame being fixed inside the reinforcing pile, a plurality of guide cylinders being arranged in the strip-shaped frame, a positioning shaft being arranged in the guide cylinder, and a driving mechanism being arranged in the strip-shaped frame for driving the positioning shaft to move axially along the guide cylinder; the driving mechanism comprises a driving rod, an adjusting assembly and a connecting assembly, the adjusting assembly being used to drive the driving rod to move along the length direction of the strip-shaped frame, and the connecting assembly being used to convert the movement of the driving rod into the radial movement of the positioning shaft so as to extend out of the reinforcing pile.

[0006] Preferably, the adjusting assembly comprises a square block, a threaded cylinder and a threaded rod, the square block is fixed in the strip-shaped frame, the threaded cylinder is fixed in the square block, the threaded rod is threadedly connected in the threaded cylinder, and one end of the threaded rod is fixedly connected with the driving rod, the driving rod rotates to drive the threaded rod to rotate synchronously, and the threaded rod moves axially along the threaded cylinder through thread cooperation.

[0007] Preferably, the connecting assembly comprises an annular groove, an annular frame, a concave frame, a driving plate and a connecting frame, the annular groove is arranged on the driving rod, the annular frame is rotatably arranged on the driving rod and is clamped with the annular groove, the concave frame is symmetrically fixed on the annular frame, one end of the driving plate is movably connected with the concave frame, and the connecting frame is fixed on one end of the positioning shaft, and the other end of the driving plate is movably connected with the connecting frame.

[0008] Preferably, the annular frame is coaxially arranged on the driving rod, and the inner diameter of the annular frame is matched with the outer diameter of the driving rod.

[0009] Preferably, the driving plate is rotatably connected with the concave frame and the connecting frame through a pin shaft at two ends respectively.

[0010] Preferably, the strip-shaped frame is fixed with a limiting cylinder at the top for guiding the driving rod, and one end of the driving rod away from the threaded rod extends into the limiting cylinder.

[0011] Preferably, the positioning shafts are uniformly and arrayed along the circumference of the strip-shaped frame, and the number of the positioning shafts is matched with the number of the guide cylinders.

[0012] Preferably, the axis of the guide cylinder is parallel to the radial direction of the reinforcing pile, and the inner diameter of the guide cylinder is matched with the outer diameter of the positioning shaft.

[0013] Preferably, the driving rod is made of high-strength alloy steel, and has excellent bending resistance and shear resistance to adapt to the axial thrust and torque effect in the driving process.

[0014] Preferably, the conical head and the reinforcing pile are integrally formed, the taper of the conical head is 30°-60°, the optimized taper can reduce the insertion resistance, the integral forming enhances the connecting strength, and the reinforcing pile has high insertion efficiency and is not easy to fall off.

[0015] The utility model has the advantages of the following beneficial effects:

[0016] 1. The composite foundation settlement reinforcement structure in the utility model, through scientific structure design, effectively solve the pile body displacement problem caused by the insufficient friction between traditional fixed column and foundation. The conical head at the bottom can significantly reduce the resistance when inserting into the foundation, so that the reinforcement pile is more easily penetrated into the soil layer of different properties, and quickly reaches the preset reinforcement depth; the internal strip frame provides a stable mounting frame for each component, and the guide cylinder provides accurate guidance for the movement of the positioning shaft. What is particularly key is that the driving mechanism drives the driving rod to move along the length direction of the strip frame through the adjusting assembly, and converts this movement into the radial movement of the positioning shaft with the help of the connecting assembly, so that the positioning shaft can extend out of the reinforcement pile and insert into the surrounding foundation soil layer. This design makes the positioning shaft and the foundation form a tight engagement, greatly increases the friction and connection strength between the reinforcement pile and the foundation, effectively avoids the pile body deviation or movement, ensures that the reinforcement structure can long-term and stable play the role of limiting the foundation settlement, especially suitable for soft, saturated or uneven settlement soil environment.

[0017] 2. In the utility model, the adjusting assembly adopts the cooperation of square block, threaded cylinder and threaded rod, realizes the stable movement of the driving rod through threaded transmission, not only simple operation, but also accurate control of the displacement of the driving rod, ensures the controllability of the extension length of the positioning shaft; in the connecting assembly, the clamping design of the annular frame and the annular groove not only ensures the synchronous movement of the annular frame with the driving rod, but also allows relative rotation, cooperates with the movable connection of the concave frame, the driving plate and the connecting frame, can uniformly transmit the axial force of the driving rod to the positioning shaft, avoids force loss or excessive local stress; the limiting cylinder at the top of the strip frame provides additional guidance for the driving rod, prevents deviation during movement, further improves the driving stability; the positioning shaft is evenly distributed along the circumference of the strip frame and is matched with the guide cylinder one by one, ensures that the positioning shaft can engage with the foundation from multiple directions when extending, so that the reinforcement pile is more balanced in stress; the driving rod adopts high-strength alloy steel material, with excellent bending and shear resistance, can withstand the axial thrust and torque in the driving process, prolongs the service life; the integrated design of the conical head and the reinforcement pile enhances the connection strength of the two, avoids falling off during insertion, and the design of the specific taper further optimizes the insertion efficiency, so that the whole structure is comprehensively improved in practicability, stability and durability. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model proposes a kind of overall structure schematic view of composite foundation settlement reinforcement structure;

[0019] Figure 2 The utility model proposes a kind of strip frame structure schematic view of composite foundation settlement reinforcement structure;

[0020] Figure 3 The utility model proposes a kind of driving rod structure schematic view of composite foundation settlement reinforcement structure;

[0021] Figure 4 The utility model provides a composite foundation settlement reinforcing structure Figure 2 The enlarged schematic view of the A structure.

[0022] Legend:

[0023] 1, reinforcing pile; 2, conical head; 3, strip frame; 4, square block; 5, threaded cylinder; 6, driving rod; 7, threaded rod; 8, annular groove; 9, annular frame; 10, concave frame; 11, driving plate; 12, guide cylinder; 13, positioning shaft; 14, connecting frame; 15, limiting cylinder. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Embodiment one, refer to Figures 1-4 A composite foundation settlement reinforcing structure, comprising a reinforcing pile 1, the bottom of the reinforcing pile 1 is provided with a conical head 2, the reinforcing pile 1 is internally fixed with a strip frame 3, the strip frame 3 is internally arranged with guide cylinders 12, the guide cylinders 12 are internally provided with positioning shafts 13, the strip frame 3 is internally provided with a driving mechanism for driving the positioning shafts 13 to move axially along the guide cylinders 12; the driving mechanism comprises a driving rod 6, an adjusting assembly and a connecting assembly, the adjusting assembly is used to drive the driving rod 6 to move along the length direction of the strip frame 3, the connecting assembly is used to convert the movement of the driving rod 6 into the radial movement of the positioning shafts 13 so that the positioning shafts 13 extend out of the reinforcing pile 1, the driving mechanism drives the driving rod 6 to move through the adjusting assembly, and then the positioning shafts 13 extend out of the reinforcing pile 1 along the guide cylinders 12 and are inserted into the foundation through the connecting assembly, the positioning shafts 13 are engaged with the foundation to increase the friction force, the displacement of the reinforcing pile 1 can be avoided, and the reinforcing stability is ensured.

[0026] Embodiment two, refer to Figures 1-4On the basis of embodiment one, the adjusting assembly comprises a square block 4, a threaded cylinder 5 and a threaded rod 7, the square block 4 is fixed inside the strip-shaped frame 3, the threaded cylinder 5 is fixed inside the square block 4, the threaded rod 7 is threadedly connected inside the threaded cylinder 5, and one end of the threaded rod 7 is fixedly connected with the driving rod 6, the driving rod 6 rotates to drive the threaded rod 7 to rotate synchronously, the threaded rod 7 moves along the axial direction of the threaded cylinder 5 through the threaded cooperation, the rotation of the threaded rod 7 in the threaded cylinder 5 drives the driving rod 6 to move, the precision and self-locking of the threaded transmission can stably adjust the displacement of the driving rod 6, and it is ensured that the extension length of the positioning shaft 13 is controllable. The connecting assembly comprises an annular groove 8, an annular frame 9, a concave frame 10, a driving plate 11 and a connecting frame 14, the annular grooves 8 are arranged on the driving rod 6, the annular frame 9 is rotatably sleeved on the driving rod 6 and the inner ring thereof is clamped with the annular grooves 8, the concave frames 10 are symmetrically fixed on the annular frame 9, one end of the driving plate 11 is movably connected with the concave frame 10, the connecting frame 14 is fixed on one end of the positioning shaft 13, and the other end of the driving plate 11 is movably connected with the connecting frame 14, the annular frame 9 moves with the driving rod 6, and the connecting frame 14 drives the positioning shaft 13 to move through the concave frame 10 and the driving plate 11 pushing the connecting frame 14, the annular frame 9 is clamped and movably connected with the annular grooves 8, can uniformly transmit force, the positioning shaft 13 stably extends, and the force loss is small; the annular frame 9 is coaxially arranged with the driving rod 6, and the inner diameter of the annular frame 9 is matched with the outer diameter of the driving rod 6, the coaxial arrangement of the annular frame 9 with the driving rod 6 and the matching of the inner diameter can avoid the deviation of the annular frame 9 when the annular frame 9 moves with the driving rod 6, the force balance makes the connecting assembly stably operate, and the extension of the positioning shaft 13 is prevented from being inclined;

[0027] Embodiment three, refer to Figures 1-4On the basis of embodiment one or embodiment two, a limiting cylinder 15 for guiding the driving rod 6 is fixed on the top of the strip-shaped frame 3, the driving rod 6 extends into the limiting cylinder 15 from the end away from the threaded rod 7, the driving rod 6 moves in the limiting cylinder 15, the limiting cylinder 15 limits its radial swing, the stable guidance can avoid the movement deviation of the driving rod 6, and ensure the accurate extension of the positioning shaft 13; the positioning shaft 13 is evenly distributed along the circumference of the strip-shaped frame 3, and the number of the positioning shaft 13 corresponds to the number of the guide cylinder 12 one by one, the positioning shaft 13 is evenly distributed along the circumference of the strip-shaped frame 3 and corresponds to the guide cylinder 12, and is inserted into the foundation from multiple directions, so that the stress is balanced, the friction distribution of the reinforcing pile 1 and the foundation is uniform, and local excessive stress is avoided; the axis of the guide cylinder 12 is parallel to the radial direction of the reinforcing pile 1, and the inner diameter of the guide cylinder 12 is matched with the outer diameter of the positioning shaft 13, the axis of the guide cylinder 12 is parallel to the radial direction of the reinforcing pile 1 and the inner diameter is matched with the positioning shaft 13, the positioning shaft 13 can be guided to accurately extend in the radial direction, the movement is not jammed, the positioning shaft 13 is accurately engaged with the foundation, and the reinforcing effect is improved; the driving rod 6 is made of high-strength alloy steel, has excellent bending resistance and shear resistance, can adapt to the axial thrust and torque effect during the driving process, the driving rod 6 is made of high-strength alloy steel, can bear the axial thrust and torque during driving, the excellent bending resistance and shear resistance can avoid deformation and damage, and prolong the service life of the structure; the conical head 2 and the reinforcing pile 1 are integrally formed, and the taper of the conical head 2 is 45°, the optimized taper can reduce the insertion resistance, the integral forming enhances the connection strength, the reinforcing pile 1 has high insertion efficiency and is not easy to fall off.

[0028] Working principle: In the initial stage of the settlement reinforcement operation of the composite foundation, the reinforcing pile 1 needs to be calibrated in a vertical posture through a special foundation construction equipment, so that the axis is kept perpendicular to the ground, so as to avoid inclination deviation in the subsequent insertion process. After calibration, the equipment slowly lowers the reinforcing pile 1, at this time, the conical head 2 at the bottom of the reinforcing pile 1 begins to contact the surface soil layer of the foundation, the conical head 2 and the reinforcing pile 1 are integrally formed, and the taper is designed to be between 30°-60°, this angle can concentrate pressure through the sharp cone top, break the surface hard shell soil or loose soil layer, and also can disperse the vertical pressure into lateral extrusion force through the inclined cone surface, so as to greatly reduce the resistance of the reinforcing pile 1 when inserted into the foundation, and make the whole pile body penetrate different properties of soil more smoothly.

[0029] With the device continuously exerting downward pressure, the reinforcing pile 1 gradually penetrates into the foundation until it reaches a preset reinforcing depth, which is usually determined according to geological survey data, to ensure that the bottom of the reinforcing pile 1 can reach a soil or rock layer with high bearing capacity to ensure the support stability of the overall structure. When the reinforcing pile 1 is in place, the internally welded or bolted strip frame 3 is also simultaneously inside the foundation, which serves as the core frame of the bearing driving mechanism and the positioning shaft 13, and its length is matched with the length of the pile body of the reinforcing pile 1 to ensure that the components can be stably installed inside the pile body. At this time, the positioning shaft 13 inserted into each guide cylinder 12 uniformly arrayed in the circumferential direction of the strip frame 3 is in an initial storage state: the outer end of the positioning shaft 13 is flush with the inner wall of the reinforcing pile 1 and does not protrude outside the pile body, and the shaft body is tightly fitted with the inner wall of the guide cylinder 12 - because the inner diameter of the guide cylinder 12 is matched with the outer diameter of the positioning shaft 13, the gap between the two is controlled within a small range, which can avoid the positioning shaft 13 from shaking in the initial state. At the same time, the components of the driving mechanism are also in a standby state: the driving rod 6 is vertically erected inside the strip frame 3, with its top extending into the limiting cylinder 15 fixed at the top of the strip frame 3, which restricts the top end of the driving rod 6; the threaded rod 7 at the bottom of the driving rod 6 is in an initial threaded engagement state with the threaded cylinder 5 in the square block 4, without relative rotation; the annular frame 9 in the connecting assembly is clamped with the annular groove 8 on the driving rod 6 through the inner ring, so that the annular frame 9 cannot slide axially along the driving rod 6, but can rotate freely relative to the driving rod 6, while the two ends of the driving plate 11 are respectively connected with the concave frame 10 and the connecting frame 14, and the whole is in a relaxed state without force, fully preparing for the subsequent driving of the positioning shaft 13 to extend out.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A composite foundation settlement reinforcement structure, comprising reinforcement piles (1), characterized in that: The bottom of the reinforcing pile (1) is provided with a conical head (2). A strip frame (3) is fixed inside the reinforcing pile (1). A guide cylinder (12) is arranged in an array inside the strip frame (3). A positioning shaft (13) passes through the guide cylinder (12). A driving mechanism for driving the positioning shaft (13) to move axially along the guide cylinder (12) is provided inside the strip frame (3). The driving mechanism includes a driving rod (6), an adjustment component and a connecting component. The adjustment component is used to drive the driving rod (6) to move along the length direction of the strip frame (3). The connecting component is used to convert the movement of the driving rod (6) into the radial movement of the positioning shaft (13) so that it extends out of the reinforcing pile (1).

2. The composite foundation settlement reinforcement structure according to claim 1, characterized in that: The adjustment assembly includes a square block (4), a threaded cylinder (5), and a threaded rod (7). The square block (4) is fixed inside the bar frame (3), the threaded cylinder (5) is fixed inside the square block (4), and the threaded rod (7) is threadedly connected inside the threaded cylinder (5). One end of the threaded rod (7) is fixedly connected to the drive rod (6). When the drive rod (6) rotates, it drives the threaded rod (7) to rotate synchronously. The threaded engagement allows the threaded rod (7) to move axially along the threaded cylinder (5).

3. The composite foundation settlement reinforcement structure according to claim 1, characterized in that: The connecting assembly includes an annular groove (8), an annular frame (9), a concave frame (10), a drive plate (11), and a connecting frame (14). The annular groove (8) is arranged in an array on the drive rod (6). The annular frame (9) is rotatably sleeved on the drive rod (6) and its inner ring is engaged with the annular groove (8). The concave frame (10) is symmetrically fixed on the annular frame (9). One end of the drive plate (11) is movably connected to the concave frame (10). The connecting frame (14) is fixed to one end of the positioning shaft (13), and the other end of the drive plate (11) is movably connected to the connecting frame (14).

4. The composite foundation settlement reinforcement structure according to claim 3, characterized in that: The ring frame (9) is coaxially arranged with the drive rod (6), and the inner diameter of the ring frame (9) is adapted to the outer diameter of the drive rod (6).

5. The composite foundation settlement reinforcement structure according to claim 3, characterized in that: The two ends of the drive plate (11) are rotatably connected to the concave frame (10) and the connecting frame (14) respectively by pins.

6. The composite foundation settlement reinforcement structure according to claim 1, characterized in that: The top of the bar frame (3) is fixed with a limiting cylinder (15) for guiding the drive rod (6), and the end of the drive rod (6) away from the threaded rod (7) extends into the limiting cylinder (15).

7. The composite foundation settlement reinforcement structure according to claim 1, characterized in that: The positioning shafts (13) are evenly distributed in an array along the circumference of the strip frame (3), and the number of positioning shafts (13) corresponds one-to-one with the number of guide cylinders (12).

8. The composite foundation settlement reinforcement structure according to claim 1, characterized in that: The axis of the guide cylinder (12) is parallel to the radial direction of the reinforcing pile (1), and the inner diameter of the guide cylinder (12) is adapted to the outer diameter of the positioning shaft (13).

9. The composite foundation settlement reinforcement structure according to claim 1, characterized in that: The drive rod (6) is made of high-strength alloy steel and has excellent bending and shear resistance to adapt to the axial thrust and torque it bears during the drive process.

10. A composite foundation settlement reinforcement structure according to claim 1, characterized in that: The conical head (2) and the reinforcing pile (1) are integrally formed, and the taper of the conical head (2) is 30°-60°.

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