Foundation pit precast pile support for ecological backfill

Abstract

The utility model relates to the technical field of precast pile supports, in particular to a foundation pit precast pile support for ecological backfill, which comprises a first precast pile and a second precast pile, the first precast pile comprises a groove part, a convex part, an inner groove and an inner convex strip, the inner groove is arranged in the middle of the first precast pile in a penetrating manner, and the inner convex strip is arranged in the inner groove. An inner groove is formed in the bottom of the first precast pile, inner convex strips are arranged on the inner wall of the inner groove in a surrounding mode, a groove part is formed in the top of the first precast pile, a convex part is arranged at the bottom of the first precast pile, the groove part and the convex part are mutually embedded in size, a first positioning plate is embedded in the bottom of the first precast pile, and an anchor rod is installed on the outer side of the interior of a limiting inserting block; limiting inserting blocks are arranged in the gaps between the inner grooves and the adjacent inner protruding strips. The problems that in the prior art, when an existing precast pile support is arranged around a foundation pit, the toppling condition is likely to happen, the supporting effect is poor, the precast pile support is likely to be separated from the foundation pit, and the stability becomes poor during ecological backfilling are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated pile supports, in particular to a foundation pit prefabricated pile support for ecological backfilling. Background Art

[0002] The precast pile support technology for foundation pits with ecological backfill refers to the use of precast piles as support structures during the foundation pit excavation process, and the selection of ecologically friendly materials during backfilling, in order to achieve the dual goals of foundation pit stability and ecological environmental protection.

[0003] The existing prefabricated pile support is prone to tipping over when it is set up around the foundation pit, and has a poor supporting effect and is easily separated from the foundation pit, resulting in poor stability during ecological backfilling.

[0004] Therefore, in view of this, the existing structure and deficiencies are studied and improved, and a prefabricated pile support for foundation pit for ecological backfill is proposed, in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide a foundation pit prefabricated pile support for ecological backfilling, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a precast pile support for foundation pit for ecological backfill, comprising a first precast pile and a second precast pile, the first precast pile comprising a groove portion, a convex portion, an inner groove and an inner convex strip, the middle of the first precast pile being provided with an inner groove, and the inner wall of the inner groove being surrounded by the inner convex strip, the top of the first precast pile being provided with a groove portion, and the bottom of the first precast pile being provided with a convex portion, the sizes of the groove portion and the convex portion being fitted with each other, the bottom of the first precast pile being embedded with a first positioning plate, and an anchor rod being installed inside and outside the limiting plug block, a limiting plug block being provided at the gap between the inner groove and adjacent said inner convex strips, the top of the first precast pile being provided with a second positioning plate, and the top of the second positioning plate being embedded with the second precast pile, the outer side of the second positioning plate being provided with an extension plate, and the outer wall of the convex portion being provided with a thread, which is threadedly connected with the first positioning plate and the second positioning plate.

[0007] Furthermore, the first precast pile is embedded in the second precast pile through the groove portion, and the raised end of the second precast pile is threadedly connected to the second positioning plate.

[0008] Furthermore, the second positioning plate is placed at the engaging groove of the first precast pile and the second precast pile.

[0009] Furthermore, the first precast pile is connected to the second precast pile by means of a limit plug-in block, and the sizes of the limit plug-in block and the inner groove match each other.

[0010] Furthermore, the inner convex strips are arranged around the central axis end of the first precast pile in an array.

[0011] Furthermore, six groups of the inner convex strips are provided.

[0012] Furthermore, a detachable structure is formed between the extension plate and the second positioning plate.

[0013] The utility model provides a prefabricated pile support for foundation pit for ecological backfilling, which has the following beneficial effects:

[0014] 1. This utility model uses cylindrical prefabricated piles with high compressive strength as the main support body, and the upper and lower ends of the piles also adopt the concave and convex matching of the foundation to ensure the stability of the entire prefabricated piles when they are stacked up and down;

[0015] By arranging inner convex strips distributed in a surrounding manner on the inner side, on the one hand, the overall anti-deformation strength of the precast pile can be enhanced, and on the other hand, it can be fixed in conjunction with the limit plug. The limit plug can fill the connection ends of multiple groups of precast piles to ensure the strength of the upper and lower stacked structures. The limit plug can be inserted into the ground during installation, which can increase the bonding force between the soil and the precast pile and improve the anti-subsidence ability.

[0016] 2. In the present invention, the first and second positioning plates play a role in positioning. A circular groove is provided in the middle of the positioning plate, and a thread is provided on the inner wall of the circular groove, which can be connected to the raised portion of the first prefabricated pile through the thread. When the prefabricated piles are stacked, the positioning plates can be clamped and fixed;

[0017] The first positioning plate placed at the bottom can not only increase the contact area with the soil, but also increase the connection strength with the soil by using the anchor rods set through it, thereby ensuring the stability of the entire precast pile support;

[0018] The second positioning plate placed at the connection end of the precast pile can play the role of extended positioning. It can be fixed to the inner wall of the foundation pit through the extension plate or other fixing objects, such as connecting rods, to form an oblique fixed structure, thereby ensuring the stability of the entire foundation pit precast pile support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. Those skilled in the art will readily understand that these drawings are merely used to illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a prefabricated pile support for a foundation pit for ecological backfilling according to the present utility model;

[0021] Figure 2This is a schematic diagram of the internal cross-sectional structure of a first precast pile for supporting a foundation pit precast pile for ecological backfilling according to the present invention;

[0022] Figure 3 This is a structural schematic diagram of a first prefabricated pile and a limiting plug in an engaged state for a prefabricated pile support for a foundation pit for ecological backfilling according to the present invention.

[0023] In the figure: 1. first precast pile; 101. groove portion; 102. raised portion; 103. inner groove; 104. inner convex strip; 2. second precast pile; 3. limiting plug; 4. first positioning plate; 5. anchor rod; 6. extension plate; 7. second positioning plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-3 The utility model provides a technical solution: a precast pile support for foundation pit for ecological backfill, comprising a first precast pile 1 and a second precast pile 2. The first precast pile 1 comprises a groove portion 101, a convex portion 102, an inner groove 103 and an inner convex strip 104. The middle part of the first precast pile 1 is provided with an inner groove 103, and the inner wall of the inner groove 103 is surrounded by inner convex strips 104. The top of the first precast pile 1 is provided with a groove portion 101, and the bottom of the first precast pile 1 is provided with a convex portion 102. The sizes of the groove portion 101 and the convex portion 102 are fitted with each other. The bottom of the first precast pile 1 is embedded with a first positioning plate 4, and the inner and outer sides of the limiting plug 3 are installed with anchor rods 5. The inner groove 103 and the gap between the adjacent inner convex strips 104 are provided with a limiting plug 3. The top of the first precast pile 1 is provided with a second positioning plate 7, and the The second precast pile 2 is embedded in the top of the second positioning plate 7, and the outer side of the second positioning plate 7 is installed with an extension plate 6. The outer wall of the raised portion 102 is provided with a thread, which is threadedly connected with the first positioning plate 4 and the second positioning plate 7; the first precast pile 1 is embedded in the second precast pile 2 through the groove portion 101, and the raised end of the second precast pile 2 is threadedly connected with the second positioning plate 7; the second positioning plate 7 is placed at the fitting groove of the first precast pile 1 and the second precast pile 2; the first precast pile 1 is fitted with the second precast pile 2 through the limiting plug 3, and the sizes of the limiting plug 3 and the inner groove 103 match each other; the inner convex strips 104 are arranged around the central axis end of the first precast pile 1; six groups of inner convex strips 104 are provided; a detachable structure is formed between the extension plate 6 and the second positioning plate 7.

[0026] Cylindrical prefabricated piles with high compressive strength are used as the main support body, and the upper and lower ends also adopt the concave and convex matching of the foundation to ensure the stability of the entire prefabricated pile when stacked up and down;

[0027] By arranging the inner convex strips 104 distributed in a surrounding manner on the inner side, on the one hand, the overall anti-deformation strength of the precast pile can be enhanced, and on the other hand, it can be fixed in conjunction with the limiting plug 3. The limiting plug 3 can fill the connection ends of multiple groups of precast piles to ensure the strength of the upper and lower stacking structure. The limiting plug 3 can be inserted into the ground during installation, which can increase the bonding force between the soil and the precast pile and improve the anti-settlement ability.

[0028] The first positioning plate 4 and the second positioning plate 7 play a role in positioning. A circular groove is provided in the middle of the positioning plate. The inner wall of the circular groove is provided with a thread, which can be connected to the raised portion 102 of the first precast pile 1 through the thread. When the precast piles are stacked, the positioning plate can be clamped and fixed;

[0029] The first positioning plate 4 placed at the bottom can not only increase the contact area with the soil position, but also can use the anchor rod 5 set through it to increase the connection strength with the soil, thereby ensuring the stability of the entire precast pile support;

[0030] The second positioning plate 7 placed at the connection end of the precast pile can play the role of extended positioning. It can be fixed to the inner wall of the foundation pit through the extension plate 6 or other fixing objects, such as connecting rods, to form an oblique fixed structure, which effectively prevents the tilt and deviation of the supporting piles, thereby ensuring the stability of the entire foundation pit precast pile support structure, the support structure is reasonably designed, the material utilization rate is high, and the project cost is reduced.

[0031] The above is only a specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any changes or substitutions that can be thought of by any technician familiar with the field within the technical scope disclosed by the present invention without creative work should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. A precast pile support for a foundation pit for ecological backfilling, comprising a first precast pile (1) and a second precast pile (2), characterized in that: The first prefabricated pile (1) comprises a groove portion (101), a raised portion (102), an inner groove (103) and an inner convex strip (104). The middle of the first prefabricated pile (1) is provided with an inner groove (103), and the inner wall of the inner groove (103) is surrounded by inner convex strips (104). The top of the first prefabricated pile (1) is provided with a groove portion (101), and the bottom of the first prefabricated pile (1) is provided with a raised portion (102). The sizes of the groove portion (101) and the raised portion (102) are mutually embedded. The bottom of the first prefabricated pile (1) is embedded with a groove portion (101). There is a first positioning plate (4), and anchor rods (5) are installed on the inner and outer sides of the limiting plug (3), and a limiting plug (3) is provided at the gap between the inner groove (103) and the adjacent inner convex strip (104). A second positioning plate (7) is provided on the top of the first prefabricated pile (1), and a second prefabricated pile (2) is embedded on the top of the second positioning plate (7). An extension plate (6) is installed on the outer side of the second positioning plate (7), and the outer wall of the protrusion (102) is provided with a thread, which is threadedly connected with the first positioning plate (4) and the second positioning plate (7).

2. The precast pile support for foundation pit for ecological backfilling according to claim 1 is characterized in that: The first precast pile (1) is embedded in the second precast pile (2) through the groove portion (101), and the raised end of the second precast pile (2) is threadedly connected to the second positioning plate (7).

3. The precast pile support for foundation pit for ecological backfilling according to claim 1 is characterized in that: The second positioning plate (7) is placed at the engaging groove of the first precast pile (1) and the second precast pile (2).

4. The precast pile support for foundation pit for ecological backfilling according to claim 1 is characterized in that: The first prefabricated pile (1) is connected to the second prefabricated pile (2) by means of a limit plug (3), and the sizes of the limit plug (3) and the inner groove (103) match each other.

5. The precast pile support for foundation pit for ecological backfilling according to claim 1 is characterized in that: The inner convex strips (104) are arranged around the central axis end of the first prefabricated pile (1).

6. The precast pile support for foundation pit for ecological backfilling according to claim 5 is characterized in that: The inner convex strips (104) are provided in six groups.

7. The precast pile support for foundation pit for ecological backfilling according to claim 1 is characterized in that: A detachable structure is formed between the extension plate (6) and the second positioning plate (7).

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