Separable rock-socketed uplift pile

Abstract

The utility model belongs to the technical field of civil engineering and buildings, and particularly relates to a separable rock-socketed uplift pile. According to the separable rock-socketed uplift pile provided by the utility model, the outer pipe unit adopts a tubular structure and is connected with the pull-plug type drill rod unit in an inserted manner by arranging the outer pipe unit and the pull-plug type drill rod unit, so that the pull-plug type drill rod unit can be pulled out after driving the outer pipe unit to be embedded into a rock stratum; the outer pipe unit is reserved in a soil layer and a rock layer to serve as an uplift pile to be used, the pulled-out pluggable drill rod unit can be repeatedly used, practicability is higher, and the construction cost and the structure utilization rate are reduced. In addition, when the pull-plug type drill rod unit drives the outer pipe unit to move downwards through hammering, the outer pipe unit can protect the pull-plug type drill rod unit used for damaging the rock stratum in the outer pipe unit to a certain extent, the service life of the pull-plug type drill rod unit is prolonged, and the rock-socketed pile body can be embedded into the rock stratum more easily.

Description

TECHNICAL FIELD

[0001] The utility model belongs to civil engineering and building technical field, especially relate to a separable rock-socketed uplift pile. BACKGROUND

[0002] The uplift pile is a support system for deep foundation pit engineering, and is used for resisting the upward force of water in soil on the structure when the underground structure of the building engineering has a part below the surrounding soil water level. The main mechanism of action is to rely on the friction between the pile body and the soil layer to resist the axial tension. The uplift pile is widely used in large basement anti-floating, high-rise building anti-pulling, offshore wharf platform anti-pulling, anchor pile foundation of suspension bridge and cable-stayed bridge, pile foundation of large dock bottom plate and anchor pile foundation in static load test.

[0003] Common forms of uplift piles include cast-in-place bored piles, precast square piles and prestressed pipe piles. The existing uplift pile mainly includes a pile body and a pile end for breaking the bedrock.

[0004] For example, the Chinese utility model patent with the patent announcement number CN219973162U and the announcement date of 2023.11.07 discloses an uplift pile, which includes a pile body. The pile body is set as a hollow structure with an open upper end. A plurality of uplift pieces are arranged in the pile body along the longitudinal direction. The uplift piece includes a limiting part. A plurality of protruding parts are arranged on the limiting part of the uplift piece at intervals. A through hole is arranged on the side wall of the pile body and matched with the protruding part of the uplift piece. An expansion piece is arranged in the space formed by the limiting part in the pile body. When the expansion piece expands, the protruding part of the uplift piece can be pushed out of the through hole.

[0005] The general structure and principle of the uplift pile in the utility model patent are as follows: when the uplift pile is embedded, the pile body of the uplift pile is first inserted into the foundation, and then the uplift pieces in four directions (up, down, left and right) are placed in the pile body in sequence. The limiting part of the uplift piece is inserted into the sliding groove of the limiting piece to stabilize it in the pile body. The protruding part of the uplift piece is aligned with the through hole. The air bag is placed between the uplift pieces in four directions. At this time, the uplift piece above the pile body is installed above the uplift piece and matched with the sliding part of the limiting part to stabilize the uplift piece in the pile body. Then, the inflation valve on the air bag is connected to the air pump. After confirming that there is no error, the air bag is inflated. After the air bag expands, it will press the limiting part of the uplift piece, and at the same time, the protruding part of the uplift piece will be pressed into the foundation. Then, the air bag is deflated and pulled out. The pile body is then filled with high-strength concrete, thereby completing the embedding of the uplift pile.

[0006] However, the rock-socketed uplift pile has at least the following deficiencies in actual use, in other words, the technical problems to be solved by the utility model.

[0007] The insertion part structure is directly arranged on the pile body, so it can only be buried in the rock layer and cannot be recycled.

[0008] Therefore, in view of the above, there is an urgent need for a new type of rock-embedded uplift pile with a recyclable insertion part. Content of the utility model

[0009] The utility model provides a separable rock-embedded uplift pile, which can be embedded into the rock layer and then pulled out by setting an outer pipe unit and a pull-insert type drill rod unit, so that the outer pipe unit remains in the soil layer and the rock layer as an uplift pile for practical use, the pull-insert type drill rod unit can be reused, the practicability is higher, and the construction cost and the structure utilization rate are reduced; in addition, when the pull-insert type drill rod unit drives the outer pipe unit to move downward by hammering, the outer pipe unit can protect the pull-insert type drill rod unit inside to some extent, prolong the service life of the pull-insert type drill rod unit, and make the rock-embedded pile body more easily embedded into the rock layer.

[0010] The technical scheme adopted by the utility model to solve the above problems is: a separable rock-embedded uplift pile, which comprises an outer pipe unit and a pull-insert type drill rod unit arranged in the outer pipe unit and used for pushing the outer pipe unit.

[0011] Further preferred technical schemes are that the outer pipe unit comprises a pipe body and a barb steel plate arranged along the length direction of the pipe body and used for restricting upward displacement of the pipe body.

[0012] Further preferred technical schemes are that the pull-insert type drill rod unit comprises a rock-breaking drill rod arranged in the pipe body and a pushing ring arranged on the upper end of the rock-breaking drill rod and used for pushing the pipe body to move downward.

[0013] Further preferred technical schemes are that the outer pipe unit further comprises a top disc arranged on the top end of the pipe body.

[0014] Further preferred technical schemes are that the outer pipe unit further comprises a guide hole arranged on the top disc; and the pull-insert type drill rod unit further comprises a guide rod arranged on the lower end of the pushing ring and used for being inserted into the guide hole.

[0015] Further preferred technical schemes are that the pull-insert type drill rod unit further comprises a conical wear-resistant shell sleeved on the insertion tip of the rock-breaking drill rod.

[0016] Further preferred technical schemes are that the pull-insert type drill rod unit further comprises an insertion block arranged on the annular end face of the conical wear-resistant shell; and the outer pipe unit further comprises an insertion slot arranged on the insertion end face of the pipe body and used for inserting and positioning the pipe body on the soil layer by inserting the insertion block.

[0017] Further preferably, the outer tube unit further comprises a top disc reinforcing plate arranged on the tube body and used for supporting the top disc.

[0018] Further preferably, the pull-out type drill rod unit further comprises a tensile plate arranged on the rock breaking drill rod and used for obliquely pulling the pushing ring.

[0019] Further preferably, the outer tube unit further comprises an arc-shaped fixing groove arranged on the barbed steel plate and used for connecting the tube body. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a position structure schematic view of the utility model.

[0021] Figure 2 It is a position structure schematic view of the outer tube unit in the utility model.

[0022] Figure 3 It is a structure schematic view of the pull-out type drill rod unit in the utility model.

[0023] Figure 4 It is a partial connection schematic view of the outer tube unit and the pull-out type drill rod unit in the utility model.

[0024] Figure 5 It is a partial structure view of the pull-out type drill rod unit in the utility model.

[0025] Figure 6 It is a partial connection schematic view of the lower end of the outer tube unit in the utility model.

[0026] Figure 7 It is a connection schematic view of the tube body and the barbed steel plate under the overhead angle in the utility model.

[0027] In the drawing, the meanings of various marks are as follows:

[0028] Soil layer a, rock layer b

[0029] Outer tube unit 1, pull-out type drill rod unit 2;

[0030] Tube body 101, barbed steel plate 102, top disc 103, guide hole 104, insertion slot 105, top disc reinforcing plate 106, arc-shaped fixing groove 107, rock breaking drill rod 201, pushing ring 202, guide rod 203, conical wear-resistant shell 204, insertion block 205, tensile plate 206. DETAILED DESCRIPTION

[0031] The following description is merely preferred embodiments of the utility model, and does not limit the scope of the utility model.

[0032] As the accompanying drawingsFigures 1-7 As shown in the figure, a detachable rock-embedded uplift pile comprises an outer tube unit 1 and a driving-in type drill rod unit 2 arranged in the outer tube unit 1 and used for driving the outer tube unit 1.

[0033] In this embodiment, the outer tube unit 1 is a hollow tubular structure, usually a circular steel tube. The outer tube unit 1 is finally left in the soil layer a and the rock layer b, and can be used to protect the driving-in type drill rod unit 2 during embedding.

[0034] In addition, the driving-in type drill rod unit 2 is used to break the soil layer a and the rock layer b at the tip end, so as to drive the outer tube unit 1 to break the rock-soil and embed in the soil layer a and the rock layer b.

[0035] Finally, during pile driving, the outer tube unit 1 is placed, the driving-in type drill rod unit 2 is inserted into the outer tube unit 1, the length / depth of the driving-in type drill rod unit 2 is longer than that of the outer tube unit 1, the driving-in type drill rod unit 2 is first impacted by the vibration hammer, so that the tip end of the driving-in type drill rod unit 2 breaks the rock-soil first, and drives the outer tube unit 1 to move downward into the broken rock, so that the outer tube unit 1 is embedded in the soil layer a and the rock layer b. After the driving-in type drill rod unit 2 completely embeds the outer tube unit 1 in the soil layer a and the rock layer b, the driving-in type drill rod unit 2 is pulled out from the outer tube unit 1, so that the outer tube unit 1 is left in the soil layer a and the rock layer b as an uplift pile, and the driving-in type drill rod unit 2 can be used for breaking the soil in the next uplift pile, so that the cost is low and the recycling rate is high. Usually, concrete or a steel reinforcement cage needs to be poured into the outer tube unit 1 to form a firm uplift pile.

[0036] The outer tube unit 1 comprises a tube body 101 and a barbed steel plate 102 arranged obliquely along the length direction of the tube body 101 and used for restricting upward displacement of the tube body 101.

[0037] In this embodiment, the tube body 101 is used as the main structure left in the soil layer a and the rock layer b, the tube body 101 can be inserted into the driving-in type drill rod unit 2, and the barbed steel plate 102 is arranged at the side end of the tube body 101 and arranged obliquely along the length direction of the tube body 101, so that the barbed steel plate 102 is convenient for downward embedding but is blocked during upward pulling, so as to achieve the uplift effect. The barbed steel plate 102 can be inserted and arranged in the tube body 101 and then extended, or can be directly welded on the side wall of the tube body 101.

[0038] The pull-insert drill rod unit 2 comprises a rock breaking drill rod 201 inserted into the pipe body 101, and a pushing ring 202 arranged on the upper end of the rock breaking drill rod 201 and used for pushing the pipe body 101 to move downward.

[0039] In the embodiment, the upper end of the rock breaking drill rod 201 is flat, and the lower end is a pointed cone with a certain rock breaking strength, so as to facilitate the rock breaking drill rod 201 to break the soil layer a and the rock layer b. The cross section of the rock breaking drill rod 201 and the pipe body 101 is generally circular, and can also be square or other according to the construction requirement. The pushing ring 202 is arranged on the rock breaking drill rod 201 close to the upper end, and is used for abutting against the pipe body 101, so as to avoid that only the rock breaking drill rod 201 is lowered and the pipe body 101 is not moved when the rock breaking drill rod 201 is hammered. The pushing ring 202 can drive the pipe body 101 to move downward together.

[0040] The outer pipe unit 1 further comprises a top disc 103 arranged on the top end of the pipe body 101.

[0041] In the embodiment, the top disc 103 is arranged on the top end of the pipe body 101, and needs to be contacted first when the pushing ring 202 moves downward, so as to drive the pipe body 101 to move downward. The top disc 103 makes the force of the pushing ring 202 more evenly applied to the pipe body 101.

[0042] The outer pipe unit 1 further comprises a guide hole 104 arranged on the top disc 103; and the pull-insert drill rod unit 2 further comprises a guide rod 203 arranged on the lower end of the pushing ring 202 and used for being inserted into the guide hole 104.

[0043] In the embodiment, the guide hole 104 is correspondingly arranged on the guide rod 203, so as to achieve the positioning effect, make the rock breaking drill rod 201 better drive the pipe body 101 to move downward, reduce the angle or force deviation between the two, and improve the rock breaking effect.

[0044] The pull-insert drill rod unit 2 further comprises a conical wear-resistant shell 204 sleeved on the inserted pointed end of the rock breaking drill rod 201.

[0045] In the embodiment, the conical wear-resistant shell 204 is used for protecting the rock breaking drill rod 201 and increasing the rock breaking effect of the rock breaking drill rod 201.

[0046] The pull-out type drill rod unit 2 further comprises a plug-in block 205 arranged on the annular end face of the conical wear-resistant shell 204; and the outer pipe unit 1 further comprises a plug-in groove 105 arranged on the insertion end face of the pipe body 101 and used for inserting and positioning the pipe body 101 on the soil layer a by plugging into the plug-in block 205.

[0047] In the embodiment, the plug-in block 205 is arranged in cooperation with the plug-in groove 105, and the plug-in block 205 is plugged into the plug-in groove 105 in the pre-rock breaking stage, so that the outer pipe unit 1 can be hammered to preliminarily break rocks by the conical wear-resistant shell 204, thereby driving the pipe body 101 to be embedded into the soil layer a, which not only reduces the rock breaking difficulty of the rock breaking drill rod 201, but also enables the pipe body 101 to be stably supported without other structures when the rock breaking drill rod 201 is inserted into the pipe body 101 which is partially located in the soil layer a. The rock breaking drill rod 201 is in contact with the conical wear-resistant shell 204 after being inserted into the pipe body 101, and the plug-in block 205 is separated from the plug-in groove 105 when the rock breaking drill rod 201 is hammered downward to break rocks, so that the conical wear-resistant shell 204 mainly protects and enhances the rock breaking drill rod 201, and the conical wear-resistant shell 204 remains in the rock layer b when the rock breaking drill rod 201 is pulled out of the pipe body 101.

[0048] The outer pipe unit 1 further comprises a top disc reinforcing plate 106 arranged on the pipe body 101 and used for supporting the top disc 103.

[0049] In the embodiment, the top disc reinforcing plate 106 is used to increase the structural strength of the pipe body 101 and the top disc 103.

[0050] The pull-out type drill rod unit 2 further comprises a tensile plate 206 arranged on the rock breaking drill rod 201 and used for obliquely pulling the pushing ring 202.

[0051] In the embodiment, the tensile plate 206 is used to increase the structural strength of the rock breaking drill rod 201 and the pushing ring 202.

[0052] The outer pipe unit 1 further comprises an arc-shaped fixing groove 107 arranged on the barbed steel plate 102 and used for connecting the pipe body 101.

[0053] In the embodiment, the arc-shaped fixing groove 107 is used to facilitate the butt welding of the barbed steel plate 102 and the pipe body 101, thereby increasing the tensile effect of the pipe body 101.

[0054] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art in the technical field without departing from the spirit of the present application. These are all modifications without creativity, and are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A detachable rock-socketed uplift pile, characterized by: The structure comprises an outer tube unit (1) and a plug-in drill rod unit (2) arranged in the outer tube unit (1) and used for pushing the outer tube unit (1).

2. The detachable rock-socketed uplift pile according to claim 1, characterized in that: The outer tube unit (1) comprises a tube body (101) and a barbed steel plate (102) arranged obliquely along the length direction of the tube body (101) and used for restricting upward displacement of the tube body (101).

3. The detachable rock-socketed uplift pile according to claim 2, characterized in that: The plug-in drill rod unit (2) comprises a rock breaking drill rod (201) arranged in the tube body (101) and a pushing ring (202) arranged on the upper end of the rock breaking drill rod (201) and used for pushing the tube body (101) to move downward.

4. The detachable rock-socketed uplift pile according to claim 3, characterized in that: The outer tube unit (1) further comprises a top disc (103) arranged on the top end of the tube body (101).

5. The detachable rock-socketed uplift pile according to claim 4, characterized in that: The outer tube unit (1) further comprises a guide hole (104) arranged on the top disc (103); and the plug-in drill rod unit (2) further comprises a guide rod (203) arranged on the lower end of the pushing ring (202) and used for being inserted into the guide hole (104).

6. The detachable rock-socketed uplift pile according to claim 3, characterized in that: The plug-in drill rod unit (2) further comprises a conical wear-resistant shell (204) sleeved on the insertion tip of the rock breaking drill rod (201).

7. The detachable rock-socketed uplift pile according to claim 6, characterized in that: The plug-in drill rod unit (2) further comprises an insertion block (205) arranged on the annular end face of the conical wear-resistant shell (204); and the outer tube unit (1) further comprises an insertion groove (105) arranged on the insertion end face of the tube body (101) and used for inserting and positioning the tube body (101) on the soil layer (a) by inserting the insertion block (205).

8. The detachable rock-socketed uplift pile according to claim 4, characterized in that: The outer tube unit (1) further comprises a top disc reinforcing plate (106) arranged on the tube body (101) and used for supporting the top disc (103).

9. The detachable rock-socketed uplift pile according to claim 3, characterized in that: The plug-in drill rod unit (2) further comprises a tensile plate (206) arranged on the rock breaking drill rod (201) and used for obliquely pulling the pushing ring (202).

10. The detachable rock-socketed uplift pile according to claim 2, characterized in that: The outer tube unit (1) further comprises an arc-shaped fixing groove (107) arranged on the barbed steel plate (102) and used for connecting the tube body (101).

Images