A frost heave resistant device in engineering

Abstract

The application discloses an anti-frost-pulling device in engineering, which is composed of a cement pile and a fixing device, wherein the fixing device is composed of a fixing cylinder, fixing teeth, a steel pile head, a rubber pad and a steel shaft; the fixing teeth are fixed in a rectangular groove of the fixing cylinder through the steel shaft and can rotate around the steel shaft; a vertical part of the fixing teeth has a certain inclination angle, so that the steel pile head can enter the fixing cylinder; a recess is arranged at a lower part of the fixing cylinder and can be engaged with a protruding part of the steel pile head to be fixed; the rubber pad is arranged in the recess and pushes the fixing teeth to the center direction of the fixing cylinder, so that the recess of the fixing teeth is engaged with the protrusion of the steel pile head to be fixed, and the steel pile head cannot be separated from the recess once entering the recess. The application has the advantages of simple combination, effectiveness, convenient actual construction, unfolding of the fixing teeth without other equipment, and fixing between the fixing teeth and the cement pile and anchoring between the fixing teeth and the frozen soil through the gravity of the free falling of the cement pile.

Description

Technical Field

[0001] This invention relates to the field of civil engineering technology, specifically to an anti-freezing and pulling device for engineering applications. Background Technology

[0002] Foundations of power poles, bridges, and buildings experience varying degrees of frost pull-out (freezing period) and thaw settlement (thawing period) under freeze-thaw cycles. This can range from minor issues like pile tilting due to frost pull-out to severe damage to the superstructure, causing significant economic losses and posing a major threat to public safety. Therefore, improving the anchorage force of pile ends in the permafrost layer to enhance pile resistance to frost pull-out is of great importance in engineering projects. Summary of the Invention

[0003] The purpose of this invention is to provide an anti-freezing pull-out device for engineering applications. When the pile is subjected to frost pull-out force, the anti-freezing pull-out effect is achieved due to the anchoring effect of the fixing teeth inserted into the permafrost layer and the interlocking of the fixing teeth with the cement pile. Compared with existing anti-freezing pull-out devices for engineering applications, the advantages of this device are that the device combination is simple and effective, the actual construction is convenient, and the deployment of the fixing teeth does not require other equipment. The gravity of the cement pile falling freely is sufficient to achieve the fixing between the fixing teeth and the cement pile, as well as the anchoring between the fixing teeth and the permafrost.

[0004] To achieve the above objectives, the present invention provides an anti-freezing and pull-out device for engineering applications, comprising a cement pile and a fixing device. The fixing device includes a fixing cylinder, fixing teeth, a steel pile head, a rubber pad, and a steel shaft. The fixing teeth are fixed in a groove in the fixing cylinder via the steel shaft and can rotate around the steel shaft. The vertical portion of the fixing teeth has a certain inclination angle to facilitate the entry of the steel pile head into the fixing cylinder. A groove is provided at the lower part of the fixing cylinder to engage with the protrusion of the steel pile head for fixing. The rubber pad is placed in the groove and pushes the fixing teeth towards the center of the fixing cylinder, so that the rectangular groove of the fixing teeth engages with the protrusion of the steel pile head for fixing, ensuring that the steel pile head cannot detach once it enters the rectangular groove.

[0005] The rubber pad is elastic.

[0006] The installation steps are as follows: 1) Use a drilling rig to drill and clean the hole to obtain the required size; 2) After assembling the fixed teeth, steel shaft, fixed cylinder and rubber pad, use a low-strength rope to gather the three fixed teeth together in the center of the fixed cylinder; 3) Place the assembled part from step 2 vertically at the bottom of the borehole with the fixed teeth facing downwards. After it is stable, use a crane to insert the steel pile head below the cement pile into the borehole with the pile facing downwards. The cement pile will slowly descend. When the cement pile stops descending, the steel pile head and the fixed teeth will have engaged and the fixed teeth will be fully extended. The anti-freeze pull-out device is now installed. If the soil is strong or there is rock, use a hammer to assist in the construction. By striking the top surface of the cement pile, the cement pile will be moved downwards to extend the fixed teeth.

[0007] The device is installed in conjunction with a drilling rig, which uses the drilling rig to drill and clean holes to obtain boreholes deep into the permafrost layer.

[0008] A cement pile with a steel pile head is placed into the borehole with the steel pile head pointing vertically downwards. As the cement pile is lowered, the steel pile head enters the fixing cylinder and squeezes the fixing teeth, causing the fixing teeth to separate and the rope binding the fixing teeth to break. The cement pile continues to be lowered, and the protrusion of the steel pile head enters the rectangular groove of the fixing teeth, at which point the fixing teeth are fully extended. During the process of the steel pile head entering the fixing cylinder and causing the fixing teeth to separate, the protrusion of the fixing teeth will insert into the permafrost layer, and the fixing teeth will be fully extended. Due to the presence of the rubber pad, the fixing teeth will be pushed inward, so that the rectangular groove of the fixing teeth and the protrusion of the steel pile head will come into close contact and achieve interlocking. After interlocking, the steel pile head and the fixing teeth are fixed and cannot be separated.

[0009] Beneficial effects: The combination is simple and effective, and the actual construction is convenient. The deployment of the fixing teeth does not require other equipment. The fixing teeth can be fixed to the cement pile and anchored to the frozen soil by the gravity of the cement pile falling freely. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the horizontal loading device structure of the present invention; Figure 3 This is a schematic diagram of the ball groove structure of the present invention; Figure 4 This is a side view of the ball groove of the present invention; Figure 5 This is a bottom view of the ball groove of the present invention. Detailed Implementation

[0011] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0012] Please see Figure 1-3 This invention provides an anti-freezing and pulling device for engineering, which consists of a cement pile 1 and a fixing device 11. The fixing device 11 includes a fixing cylinder 2, fixing teeth 3, a steel pile head 4, a rubber pad 5 and a steel shaft 6. The fixing teeth 3 are fixed in the groove (12) of the fixing cylinder 2 by the steel shaft 6. The fixing teeth 3 can rotate around the steel shaft 6. The vertical part of the fixing teeth 3 has a certain inclination angle, which facilitates the steel pile head 4 to enter the fixing cylinder 2. The lower part of the fixing cylinder 2 is provided with a groove 12, which can engage with the protrusion of the steel pile head 4 for fixing. The rubber pad 5 is set in the groove 12. The rubber pad 5 pushes the fixing teeth 3 towards the center of the fixing cylinder 2, so that the rectangular groove of the fixing teeth 3 engages with the protrusion of the steel pile head 4 for fixing, so that the steel pile head 4 cannot be detached once it enters the rectangular groove.

[0013] The rubber pad 5 is elastic.

[0014] The installation steps are as follows: 1. Use a drilling rig to drill and clean the hole to obtain the required size; 2. After assembling the fixing teeth 3, steel shaft 6, fixing cylinder 2 and rubber pad 5, use a low-strength rope to gather the three fixing teeth 3 together in the center of the fixing cylinder 2. 3. Place the assembled part from step 2 vertically at the bottom of the borehole with the fixed teeth 3 protruding downwards. After it is stable, use a crane to insert the steel pile head 4 below the cement pile 1 into the borehole with the pile head 4 pointing downwards. The cement pile 1 will slowly descend. When the cement pile 1 stops descending, the steel pile head 4 and the fixed teeth 3 will have engaged and the fixed teeth 3 will have fully extended. The anti-freeze pull-out device is now installed. If the soil is strong or there is rock, use a hammer to assist in the construction. By striking the top surface of the cement pile 1, the cement pile 1 will be moved downwards, thus extending the fixed teeth 3.

[0015] The device is installed in conjunction with a drilling rig, which uses the drilling rig to drill and clean holes to obtain boreholes deep into the permafrost layer.

[0016] A cement pile 1 with a steel pile head 4 is placed into the borehole with the steel pile head 4 pointing vertically downwards. As the cement pile 1 is lowered, the steel pile head 4 enters the fixing cylinder and squeezes the fixing teeth 3, causing the fixing teeth 3 to separate and the rope binding the fixing teeth 3 to break. The cement pile 1 continues to be lowered, and the protrusion of the steel pile head 4 enters the rectangular groove of the fixing teeth 3. At this time, the fixing teeth 3 are fully extended. During the process of the steel pile head 4 entering the fixing cylinder 2 and separating the fixing teeth 3, the protrusion of the fixing teeth 3 will insert into the permafrost layer. The fixing teeth 3 are fully extended, and due to the presence of the rubber pad 5, the fixing teeth 3 are pushed inward, so that the rectangular groove of the fixing teeth 3 and the protrusion of the steel pile head 4 are in close contact and interlocked. After interlocking, the steel pile head 4 and the fixing teeth 3 are fixed and cannot be separated.

[0017] Fixing device: including fixing cylinder 2, fixing teeth 3, steel pile head 4, rubber pad 5, and steel shaft 6.

[0018] Fixing device: including fixing teeth 3 fixed in the groove (12) of fixing cylinder 2 by steel shaft 6, fixing teeth 3 can rotate around steel shaft 6, the vertical part of fixing teeth 3 has a certain inclination angle, which facilitates the steel pile head 4 to enter the fixing cylinder 2; the lower part of fixing cylinder 2 is provided with groove 12, which can engage with the protrusion of steel pile head 4 for fixing, rubber pad 5 is provided in groove 12, rubber pad 5 pushes fixing teeth 3 towards the center of fixing cylinder 2, so that the rectangular groove of fixing teeth 3 engages with the protrusion of steel pile head 4 for fixing, so that steel pile head 4 cannot be separated once it enters the rectangular groove.

[0019] Working principle: This device is used in conjunction with a drilling rig during construction. The fixed cylinder 2, fixed teeth 3, and rubber pad 5 are then installed... Figure 4 Once installed, the fixing teeth 3 are bound together with thin ropes of low tensile strength, bringing them close to the center of the fixing cylinder 2. Figure 4 As shown. After installation, a drilling rig is used to drill and clean the borehole to obtain a depth to the permafrost layer. After obtaining the borehole, the installed... Figure 4 Some devices are Figure 2 The device is lowered to the bottom of the hole. After placement, the cement pile with the steel pile head 4 is inserted into the borehole with the steel pile head pointing vertically downwards. As the pile is lowered, the steel pile head 4 enters the fixing cylinder and presses against the fixing teeth 3, causing the fixing teeth 3 to separate and the rope binding the fixing teeth to break. The cement pile continues to be lowered, and the protrusion of the steel pile head 4 enters the groove of the fixing teeth 3. At this time, the fixing teeth 3 are fully extended, and the device is in its final position. Figure 1 The overall posture of the device in the anti-freeze pile extraction diagram. During the process of the steel pile head entering the fixing cylinder 2 and separating the fixing teeth 3, the protrusions of the fixing teeth 3 will insert into the permafrost layer. When the device presents... Figure 1 In the designated position, the fixing tooth 3 is fully extended, and due to the presence of the rubber pad, it pushes the fixing tooth 3 inward, causing the protrusion of the grooved steel pile head of the fixing tooth 3 to make tight contact, achieving interlocking. After interlocking, the pile and the tooth are fixed and cannot be separated. When the pile is subjected to frost pull-out force, the anchoring effect of the fixing tooth 3 inserted into the permafrost layer and the interlocking between the fixing tooth 3 and the cement pile achieve the effect of frost pull-out resistance. Compared with existing engineering frost pull-out resistance devices, the advantages of this device are that the device combination is simple and effective, the actual construction is convenient, and the deployment of the fixing tooth does not require other equipment. Only the gravity of the cement pile falling freely can achieve the fixation between the fixing tooth and the cement pile, and the anchoring between the fixing tooth and the permafrost.

[0020] The specific steps are as follows: 1. Use a drilling rig to drill and clean the hole to obtain the required size; 2. After assembling the fixing teeth 3, steel shaft 6, fixing cylinder 2 and rubber pad 5, use a low-strength rope to gather the three fixing teeth 3 together in the center of the fixing cylinder 2. 3. Place the assembled part from step 2 vertically at the bottom of the borehole with the fixed teeth 3 protruding downwards. After it is stable, use a crane to insert the steel pile head 4 below the cement pile 1 into the borehole with the pile head 4 pointing downwards. The cement pile 1 will slowly descend. When the cement pile 1 stops descending, the steel pile head 4 and the fixed teeth 3 will have engaged and the fixed teeth 3 will have fully extended. The anti-freeze pull-out device is now installed. If the soil is strong or there is rock, use a hammer to assist in the construction. By striking the top surface of the cement pile 1, the cement pile 1 will be moved downwards, thus extending the fixed teeth 3.

[0021] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for using an anti-freezing pulling device in engineering, characterized in that: Composed of a cement pile (1) and a fixing device (11), the fixing device (11) includes a fixing cylinder (2), a fixing tooth (3), a steel pile head (4), a rubber pad (5), and a steel shaft (6). The fixing tooth (3) is fixed in the groove (12) of the fixing cylinder (2) by the steel shaft (6). The fixing tooth (3) can rotate around the steel shaft (6). The vertical part of the fixing tooth (3) has a certain inclination angle, which facilitates the steel pile head (4) to enter the fixing cylinder (2). The lower part of the fixing tooth (3) is provided with a rectangular groove, which can engage with the protrusion of the steel pile head (4) for fixing. The rubber pad (5) is set in the groove (12). The rubber pad (5) pushes the fixing tooth (3) towards the center of the fixing cylinder (2), so that the rectangular groove of the fixing tooth (3) engages with the protrusion of the steel pile head (4) for fixing, so that the steel pile head (4) cannot be detached once it enters the rectangular groove. The installation steps are as follows: 1) Use a drilling rig to drill and clean the hole to obtain the required size; 2) After assembling the fixed teeth (3), steel shaft (6), fixed cylinder (2) and rubber pad (5), use a low-strength rope to gather the three fixed teeth (3) together in the center of the fixed cylinder (2); 3) Place the assembled part from step 2) vertically at the bottom of the borehole with the protruding part of the fixing tooth (3) facing downwards. After it is placed and stabilized, use a crane to insert the steel pile head (4) below the cement pile (1) into the borehole with the protruding part facing downwards. The cement pile (1) slowly descends. When the cement pile (1) stops descending, the steel pile head (4) and the fixing tooth (3) have engaged and the fixing tooth (3) has been fully extended. The anti-freeze pull-out device is installed. If the soil strength is high or there is rock, use a hammer to assist in the construction. By hitting the top surface of the cement pile (1), the cement pile (1) is helped to move downwards, thereby extending the fixing tooth (3).

2. The method of using the anti-freezing pulling device in engineering according to claim 1, characterized in that: During the project, the anti-freeze pulling device is installed in conjunction with the drilling rig. The drilling rig is used to drill and clean the holes to obtain boreholes deep into the permafrost layer.

Images