Friction pile with high bearing capacity

Abstract

The utility model belongs to the field of building pile foundations, and particularly relates to a friction pile with high bearing capacity, which comprises a pile head, the top of the pile head is fixedly connected with a concrete column body, the inner wall of the concrete column body is in sliding connection with a friction roller, the outer wall of the concrete column body is in sliding connection with a friction block, and the concrete column body comprises a placing chamber. A containing chamber is arranged in the concrete column body, and a friction groove is formed in the outer wall of the concrete column body. According to the friction pile with the high bearing capacity, one end of the friction rod is far away from the concrete column body and enters the soil, the friction force generated between the concrete column body and the soil is improved, the friction force between the concrete column body and the soil is further improved through the friction blocks distributed in a staggered mode, and the multiple supporting seats are spliced in the containing chamber; the bearing capacity of the concrete column body is further improved, the overall structure of the concrete column body is reinforced through the existence of the supporting seat, and the overall bearing capacity of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building pile foundations, in particular to a friction pile with high bearing capacity. Background Art

[0002] Friction piles refer to piles whose bottom is located in a softer soil layer, and whose axial load is supported by the friction resistance of the pile side and the reaction force of the soil at the bottom of the pile, with the friction resistance of the pile side playing the main supporting role. They are mainly used for foundations buried deep in rock strata, and are piles in which the top load is borne by the pile side resistance under the ultimate bearing capacity state.

[0003] At present, in the prior art, for example, a Chinese patent with a publication number of CN212248214U discloses a concrete friction pile, which uses a pile-pressing device to press the entire device into the soil. Since the pile shoe effectively reduces the resistance, the pile pressing is smoother, and a triangular steel plate is installed in the triangular installation groove through a positioning screw to increase the cutting of the hard soil, so that the pile body reaches the specified position. Since the friction holes are arranged at equal distances on the outside of the concrete pile body, friction is formed between the surrounding soil, thereby improving the bearing capacity of the pile body. The strength, rigidity and stability of the pile body can be improved by using a steel inner mold support. The concrete of the concrete pile body can be interconnected by a steel skeleton, which plays a role of horizontal and longitudinal skeleton support, effectively improving the vertical and horizontal strength of the pile body. The waterproof curing layer is an organic silicon coating, which has a significant waterproof effect, preventing moisture from penetrating into the concrete to cause corrosion and affecting the service life of the concrete. However, the surface of the friction pile is only provided with friction holes, resulting in weak existing friction between the friction column and the surrounding soil, which easily causes the friction pile to spin, thereby reducing the bearing capacity of the pile body and causing damage to the building. In view of this, we propose a friction pile with high bearing capacity. Utility Model Content

[0004] The main purpose of the utility model is to provide a friction pile with high bearing capacity, which can solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides a friction pile with high bearing capacity, comprising a pile head, the top of which is fixedly connected to a concrete column, the inner wall of which is slidably connected to a friction rod, the outer wall of which is slidably connected to a friction block, and the concrete column comprises:

[0006] A placement chamber, wherein the concrete column is provided with a placement chamber inside;

[0007] Friction groove: the outer wall of the concrete column is provided with a friction groove.

[0008] Preferably, the friction groove has an inner high and outer bottom design, and four friction grooves are evenly distributed on the outer wall of the concrete column. The four friction grooves form a group, and there are three groups of designs on the outer wall of the concrete column. The inner wall of the friction groove is slidably connected to the outer wall of the friction rod, and the friction rod is provided with a lifting hole to prevent the friction rod from moving during lifting.

[0009] Preferably, the outer wall of the concrete column is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with a sliding block, the outer wall of the sliding block is fixedly connected to the inner wall of the friction block, and the interior of the sliding groove is provided with expandable plastic. When the friction block is subjected to a large thrust, in order to avoid affecting the entire device, the friction block will squeeze the expandable plastic, causing the friction block to slide in the sliding groove, thereby reducing the impact of underground soil movement on the entire friction pile.

[0010] Preferably, two sliding grooves are evenly distributed on the outer wall of the concrete column, and the sliding grooves and the friction grooves are staggered. The structural strength of the concrete column is improved by the staggered design, and the concrete column is modularly designed.

[0011] Preferably, a placement groove is provided on the top of the pile head, the inner wall of the placement groove is fixedly connected to the bottom of the concrete column, and the bottom of the pile head is conical in design. The placement groove improves the connection strength between the concrete column and the pile head.

[0012] Preferably, the placement chamber is internally movably connected to a support seat, the outer wall of the support seat is provided with a semicircular groove, the support seat is provided with a through hole, the support seat is modularly designed, and the bottom edge has a rounded corner design to facilitate the support seat to squeeze the friction rod.

[0013] The utility model provides a friction pile with high bearing capacity. It has the following beneficial effects:

[0014] (1) The friction pile column with high bearing capacity is placed in a placement chamber by lowering a support seat so that one end of the friction rod is away from the concrete column and enters the soil, thereby increasing the friction between the concrete column and the soil. The friction blocks are staggered to further increase the friction between the concrete column and the soil. A plurality of support seats are spliced ​​in the placement chamber to further increase the bearing capacity of the concrete column. The support seats are used to reinforce the overall structure of the concrete column, thereby increasing the overall bearing capacity of the device.

[0015] (2) The friction pile with high bearing capacity is constructed by first hoisting the concrete column into the excavated foundation pit, and then hoisting the support seat into the placement room. The through hole facilitates the hoisting of the support seat so that the outer wall of the support seat will not be damaged. The concrete column and the support seat have a modular design, which is convenient for coping with foundation pits of different depths, thereby improving the usability of the friction column. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 It is a partial cross-sectional view of the concrete column and a schematic diagram of the column head structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the support seat and friction roller structure of the utility model.

[0020] Explanation of the accompanying drawings: 1. pile head; 2. concrete column; 21. placement chamber; 11. placement groove; 22. friction groove; 23. sliding groove; 24. sliding block; 25. support seat; 251. semicircular groove; 252. through hole; 3. friction stick; 4. friction block.

[0021] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 3 The utility model proposes a friction pile with high bearing capacity, including a pile head 1, a concrete column 2 is fixedly connected to the top of the pile head 1, a friction stick 3 is slidably connected to the inner wall of the concrete column 2, a friction block 4 is slidably connected to the outer wall of the concrete column 2, the concrete column 2 includes a placement chamber 21, the interior of the concrete column 2 is provided with the placement chamber 21, and the outer wall of the concrete column 2 is provided with a friction groove 22.

[0024] In the utility model, the friction groove 22 has an inner high and outer bottom design. Four friction grooves 22 are evenly distributed on the outer wall of the concrete column 2. The four friction grooves 22 form a group. There are three groups of designs on the outer wall of the concrete column 2. The inner wall of the friction groove 22 is slidably connected to the outer wall of the friction rod 3. The friction rod 3 is provided with a lifting hole to prevent the friction rod 3 from moving during lifting. The outer wall of the concrete column 2 is provided with a sliding groove 23. The inner wall of the sliding groove 23 is slidably connected to a sliding block 24. The outer wall of the sliding block 24 is fixedly connected to the inner wall of the friction block 4. The interior of the sliding groove 23 is provided with expansion plastic. When the friction block 4 is subjected to a large thrust, in order to avoid affecting the entire device, the friction block 4 will squeeze the expansion plastic, so that the friction block 4 slides in the sliding groove 23, reducing the impact of underground soil movement on the entire friction pile.

[0025] Furthermore, two sliding grooves 23 are evenly distributed around the outer wall of the concrete column 2, and the sliding grooves 23 and the friction grooves 22 are staggered. The staggered design improves the structural strength of the concrete column 2. A placement groove 11 is provided on the top of the pile head 1, and the inner wall of the placement groove 11 is fixedly connected to the bottom of the concrete column 2. The bottom of the pile head 1 is conical in design, which is convenient for the pile head 1 to break the soil and reduce the resistance of the pile driver. The placement groove 11 improves the connection strength between the concrete column 2 and the pile head 1. The internal movability of the placement chamber 21 is connected with a support seat 25, and the outer wall of the support seat 25 is provided with a semicircular groove 251. The support seat 25 is provided with a through hole 252. The support seat 25 is modularly designed, and the bottom edge has a rounded corner design to facilitate the support seat 25 to squeeze the friction rod 3.

[0026] When in use, a crane is used to drop the pile head 1 and the concrete column 2 into the foundation pit. The lifting hole on the friction rod 3 can prevent the friction rod 3 from moving, thereby preventing the lifting work from failing due to the movement of the friction rod 3. The through hole 252 is used to facilitate the crane to lift the support seat 25, and the friction rod 3 is squeezed by the support seat 25 to be inserted into the soil of the foundation pit wall. After the lifting work is completed, the pile pressing work is carried out through the pile pressing equipment, so that the entire device is in more complete contact with the soil.

[0027] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A friction pile with high bearing capacity, comprising a pile head (1), characterized in that: The top of the pile head (1) is fixedly connected to a concrete column (2), the inner wall of the concrete column (2) is slidably connected to a friction rod (3), the outer wall of the concrete column (2) is slidably connected to a friction block (4), and the concrete column (2) comprises: A placement chamber (21), wherein the concrete column (2) is provided with a placement chamber (21); A friction groove (22), wherein the outer wall of the concrete column (2) is provided with a friction groove (22).

2. A friction pile with high bearing capacity according to claim 1, characterized in that: The friction groove (22) has an inner high and outer low design. Four friction grooves (22) are evenly distributed around the outer wall of the concrete column (2). The four friction grooves (22) form a group. There are three groups of designs on the outer wall of the concrete column (2). The inner wall of the friction groove (22) is slidably connected to the outer wall of the friction rod (3).

3. A friction pile with high bearing capacity according to claim 1, characterized in that: The outer wall of the concrete column (2) is provided with a sliding groove (23), the inner wall of the sliding groove (23) is slidably connected with a sliding block (24), and the outer wall of the sliding block (24) is fixedly connected to the inner wall of the friction block (4).

4. A friction pile with high bearing capacity according to claim 1, characterized in that: Two sliding grooves (23) are evenly distributed around the outer wall of the concrete column (2), and the sliding grooves (23) and the friction grooves (22) are staggered.

5. The high-bearing-capacity friction pile according to claim 1, characterized in that: A placement groove (11) is provided at the top of the pile head (1), and the inner wall of the placement groove (11) is fixedly connected to the bottom of the concrete column (2).

6. A friction pile with high bearing capacity according to claim 1, characterized in that: The interior of the placement chamber (21) is movably connected to a support seat (25), the outer wall of the support seat (25) is provided with a semicircular groove (251), and the support seat (25) is provided with a through hole (252).

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