Combined foundation pile for civil engineering

Abstract

The utility model belongs to the technical field of civil engineering, and particularly relates to a civil engineering combined type foundation pile which comprises a pile pipe, a precast pile is slidably connected to the inner wall of the pile pipe, a receding hole is formed in one end of the precast pile, a positioning rod is slidably connected to the inner wall of the receding hole, and a base rod is arranged at one end of the positioning rod. One end of the base rod is detachably connected with one end of the positioning rod, the outer wall of the positioning rod is slidably connected with a fixing plate, the bottom end and the top end of the fixing plate are fixedly connected with a plurality of lower inserting rods and upper inserting rods which are distributed at equal intervals, and inserting holes matched with the upper inserting rods are formed in the bottom of the precast pile; the lower insertion rod can be connected to a hard concrete expansion head, so that the upper insertion rod can be connected with the bottom of the precast pile, and during reconnection, the upper insertion rod can be adjusted to the position corresponding to the upper insertion rod through the two positioning rings connected to the outer side of the center block, so that a worker can ensure that an insertion hole is connected with the upper insertion rod under the assistance of the positioning rods; and it is ensured that the precast pile is stably supported on the hard concrete.

Description

Technical Field

[0001] The utility model belongs to the technical field of civil engineering, and in particular relates to a combined foundation pile for civil engineering. Background Art

[0002] The combined flange foundation pile is a type of pile composed of a flange foundation enlarged head and a prefabricated reinforced concrete pile body (or casing pile body). The conventional construction method of flange foundation piles is adopted, that is, the stone plug in the pile pipe is impacted with an internal hammer to force the pile pipe to sink to the bearing layer, and then the head is expanded with a dry hard concrete hammer. A small amount of plastic concrete or cement mortar is poured into the bottom of the pile pipe as a bonding agent to connect the enlarged head and the pile body. Before pulling out the pile pipe, a prefabricated concrete pile or steel casing or hard plastic pipe is inserted into the enlarged head. If a prefabricated concrete pile is inserted, the pile pipe is pulled out to form a combined flange foundation pile.

[0003] When the precast piles are inserted into the hard concrete layer, the hard concrete layer is directly connected to the bottom of the precast piles, and the stability of the bottom connection is difficult to ensure. Therefore, it is reinforced by connecting steel bars, etc. When the precast pile foundation is connected to the connecting piece, it is not convenient to connect the precast pile foundation with the bottom opening and the connecting piece on the hard concrete layer because it is at the bottom of the casing. Utility Model Content

[0004] The utility model provides a civil engineering combined foundation pile, which has the characteristic of solving the problem that it is inconvenient to connect the prefabricated pile foundation with the connection piece at the bottom opening and the hard concrete layer when connecting the prefabricated pile foundation with the connection piece.

[0005] The utility model provides the following technical scheme: it comprises a pile tube, the inner wall of the pile tube is slidably connected with a prefabricated pile, one end of the prefabricated pile is provided with a clearance hole, the inner wall of the clearance hole is slidably connected with a positioning rod, one end of the positioning rod is provided with a base rod, one end of the base rod is detachably connected with one end of the positioning rod, the outer wall of the positioning rod is slidably connected with a fixing plate, the bottom and top of the fixing plate are fixedly connected with a plurality of equidistantly distributed lower plug rods and upper plug rods, the bottom of the prefabricated pile is provided with a plug hole matching the upper plug rod, one end of the positioning rod is snap-connected with a center block, the outside of the center block is fixedly connected with two positioning rings, a vertical rod is slidably connected to the positioning ring, the top of the prefabricated pile is provided with a plurality of positioning grooves matching the plug holes, and one of the tops of the upper plug rods is provided with a docking groove.

[0006] The upper plug rod matches the socket, one end of the base rod is fixedly connected with a connecting column, a connecting groove is provided at the bottom of the positioning rod, and the base rod is threadedly connected with the connecting groove.

[0007] Among them, a protrusion is fixedly connected to the outer wall of the positioning rod, a limit plate is fixedly connected to the top of the vertical rod, a spring is provided between the limit plate and the positioning ring, and a fixing rod is fixedly connected between the center block and the positioning ring.

[0008] Wherein, one end of the central block is fixedly connected with a docking block, and the top of the positioning rod is provided with a top groove matching the docking block.

[0009] Wherein, a clearance hole matching the positioning rod is opened at the center of the prefabricated pile, and a lower insertion rod matching the positioning rod is opened at the center of the fixing plate.

[0010] The beneficial effects of the utility model are as follows: the upper plug rod can be connected to the hard concrete expansion head through the lower plug rod, so that the upper plug rod can be connected to the bottom of the precast pile, and when connected, the two positioning rings connected to the outside of the center block can be adjusted to the corresponding position with the upper plug rod, so that the staff can cooperate with the assistance of the positioning rod to ensure the connection between the plug hole and the upper plug rod, and ensure that the precast pile is firmly supported on the hard concrete, so that the device can avoid the plug hole being at the bottom of the pile pipe, which is not convenient for the precast pile to be firmly connected to the hard concrete.

[0011] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the movement of the prefabricated piles in the utility model;

[0014] Figure 3 It is a three-dimensional structural schematic diagram of the prefabricated pile in the utility model;

[0015] Figure 4 For this utility model Figure 2 A magnified schematic diagram of species A;

[0016] Figure 5 It is a schematic diagram of the top structure of the upper insertion rod in the utility model.

[0017] In the figure: 1, pile pipe; 2, prefabricated pile; 21, make way hole; 211, positioning groove; 22, fixing plate; 221, lower plug rod; 222, upper plug rod; 223, docking groove; 23, plug hole; 24, base rod; 241, connecting column; 3, positioning rod; 31, connecting groove; 32, top groove; 33, center block; 331, docking block; 34, fixing rod; 35, positioning ring; 36, vertical rod; 361, limit plate; 37, spring; 38, bump. DETAILED DESCRIPTION

[0018] See also Figure 1-Figure 5 The utility model provides the following technical solution: comprising a pile pipe (1), wherein the inner wall of the pile pipe (1) is slidably connected to a prefabricated pile (2), one end of the prefabricated pile (2) is provided with a clearance hole (21), the inner wall of the clearance hole (21) is slidably connected to a positioning rod (3), one end of the positioning rod (3) is provided with a base rod (24), one end of the base rod (24) is detachably connected to one end of the positioning rod (3), the outer wall of the positioning rod (3) is slidably connected to a fixing plate (22), the bottom and top ends of the fixing plate (22) are fixedly connected to a plurality of lower plug rods distributed at equal distances. (221) and an upper plug rod (222), a plug hole (23) matching the upper plug rod (222) is provided at the bottom of the prefabricated pile (2), a center block (33) is snap-connected to one end of the positioning rod (3), two positioning rings (35) are fixedly connected to the outer side of the center block (33), a vertical rod (36) is slidably connected to the positioning ring (35), a plurality of positioning grooves (211) matching the plug hole (23) are provided at the top of the prefabricated pile (2), and a docking groove (223) is provided at the top of one of the upper plug rods (222).

[0019] In this embodiment, the bottom of the pile pipe (1) is sunk to the bearing layer by external force, and then the base rod (24) is hammered into the bearing layer so that the base rod (24) is located at the center of the pile pipe (1). At this time, the positioning rod (3) can be connected to the base rod (24), and then dry hard concrete is thrown into the pile pipe (1). Then, the dry hard concrete is located at the bottom of the pile pipe (1) for expansion by a pressure charging device. Then, the fixing plate (22) is sleeved on the positioning rod (3) so that it is installed on the pile pipe (1). Then, it can slide down by connecting with the positioning rod (3), so that the fixing plate (22) can slide down to the bottom of the inner cavity of the pile pipe (1). At this time, a plurality of lower plug rods (221) fixedly connected to the bottom of the fixing plate (22) can be inserted downward. Inserted into the concrete, the fixing plate (22) is supported on the concrete layer, so that the plurality of upper insertion rods (222) can be located at the top of the fixing plate (22). When the fixing plate (22) is slid downward, the docking groove (223) provided at the top of the upper insertion rod (222) can enable the fixing plate (22) to be connected to the straight rod, so that the straight rod can be vertically installed on the top of the upper insertion rod (222). When the top of the straight rod is at the top position of the pile pipe (1), the positioning rod (3) can be rotated to install the center block (33) on the top of the positioning rod (3). The positions of the two positioning rings (35) fixedly connected to the outside of the center block (33) are adjusted, and the inner wall of one positioning ring (35) corresponds to the straight rod connected to the docking groove (223). The upper insertion rods (222) are distributed at equal intervals, and the two positioning rings (35) are distributed symmetrically, so that after one positioning ring (35) corresponds to the straight rod, the position of the center block (33) installed on the top of the positioning rod (3) can correspond to a plurality of upper insertion rods (222). At this time, the center block (33) is detachably connected to the top of the positioning rod (3). At this time, the position of the positioning rod (3) is fixed. By making the prefabricated pile (2) correspond to the positioning rod (3), the prefabricated pile (2) slides down, and the bottom of the prefabricated pile (2) slides to the position corresponding to the upper insertion rod (222). At this time, the center block (33) can be installed on the positioning rod (3), and the vertical rod (36) slidably connected to the inner wall of the positioning ring (35) is located above the prefabricated pile (2). At this time, the prefabricated pile can be controlled. (2) rotate, when the insertion hole (23) opened at the bottom of the precast pile (2) corresponds to the upper insertion rod (222), the vertical rod (36) can slide down so that its bottom is located in the positioning groove (211) opened at the top of the precast pile (2), thereby ensuring that the insertion hole (23) is connected to the upper insertion rod (222), so that when the precast pile (2) continues to slide down, the upper insertion rod (222) can be inserted into the insertion hole (23), so that after the precast pile (2) is installed in the pile pipe (1), the bottom of the precast pile (2) can be effectively installed on the pre-expanded concrete layer through the plastic concrete or cement mortar added in advance, ensuring that the precast pile (2) is stably supported on the hard concrete, so that the device can avoid the insertion hole (23) being located at the bottom of the pile pipe (1).It is not convenient to firmly connect the precast pile (2) with the hard concrete, thereby ensuring the firm support of the precast pile (2).

[0020] The upper plug rod (222) matches the socket (23), one end of the base rod (24) is fixedly connected with a connecting column (241), a connecting groove (31) is provided at the bottom of the positioning rod (3), and the base rod (24) is threadedly connected to the connecting groove (31); the upper plug rod (222) matches the socket (23), so that the socket (23) can be limited by the insertion of the upper plug rod (222), ensuring that it is firmly mounted on the hard concrete expansion head, the connecting groove (31) provided at the bottom of the positioning rod (3) is used to enable it to be threadedly connected to the connecting column (241) fixedly connected to one end of the base rod (24), and the positioning rod (3) can be appropriately rotated on the connecting column (241) to adjust its angle, so as to facilitate the adjustment of the positioning ring (35) to the upper and lower corresponding positions of the upper plug rod (222).

[0021] The outer wall of the positioning rod (3) is fixedly connected with a protrusion (38); the top of the vertical rod (36) is fixedly connected with a limiting plate (361); a spring (37) is provided between the limiting plate (361) and the positioning ring (35); and a fixing rod (34) is fixedly connected between the central block (33) and the positioning ring (35); the protrusion (38) fixedly connected to the outer wall of the positioning rod (3) is used to facilitate the rotation of the positioning rod (3); the limiting plate (361) fixedly connected to the top of the vertical rod (36) is used to install the spring (37), so that the spring (37) is installed between the positioning ring (35) and the limiting plate (361), so that the limiting plate (361) can pull the limiting plate (361) downward, so that the vertical rod (36) and the positioning groove (211) correspond to each other, so that it is quickly limited in the positioning groove (211), so that the prefabricated pile (2) is connected to the upper insertion rod (222).

[0022] One end of the center block (33) is fixedly connected to a docking block (331), and the top of the positioning rod (3) is provided with a top groove (32) matching the docking block (331); the docking block (331) fixedly connected to one end of the center block (33) is used to enable the center block (33) to be snap-fitted and connected to the top of the prefabricated pile (2), so that the center block (33) can be snap-fitted and connected to the top of the prefabricated pile (2).

[0023] The prefabricated pile (2) is provided with a clearance hole (21) matching the positioning rod (3) at the center thereof, and the fixing plate (22) is provided with a lower insertion rod (221) matching the positioning rod (3) at the center thereof; the clearance hole (21) provided at the center of the prefabricated pile (2) is used to enable the prefabricated pile (2) to be inserted outside the positioning rod (3) so that the prefabricated pile (2) can slide down to the bottom of the pile pipe (1), and the lower insertion rod (221) is used to enable the fixing plate (22) to slide on the outer wall of the positioning rod (3).

[0024] The working principle and use process of the utility model are as follows: a base rod (24) is fixed at the center of the pile pipe (1), and then a positioning rod (3) is connected to the base rod (24), and dry hard concrete is poured into the pile pipe (1), and then a fixing plate (22) is sleeved on the positioning rod (3) so that a plurality of lower plug rods (221) fixedly connected to the bottom of the fixing plate (22) can be inserted downward into the concrete, and then a straight rod can be connected to the fixing plate (22) through a docking groove (223) provided on the top of the upper plug rod (222). At this time, the positioning rod (3) can be rotated to make the inner wall of a positioning ring (35) correspond to the straight rod connected to the docking groove (223). At this time, the position of the center block (33) installed on the top of the positioning rod (3) can correspond to a plurality of upper plug rods (222). At this time, the center block (33) can be installed on the top of the positioning rod (3) to correspond to the plurality of upper plug rods (222). The core block (33) is separated from the top of the positioning rod (3), so that the precast pile (2) corresponds to the positioning rod (3). At this time, the rotation of the precast pile (2) can be controlled. When the insertion hole (23) opened at the bottom of the precast pile (2) corresponds to the upper insertion rod (222), the vertical rod (36) can slide down so that its bottom is located in the positioning groove (211) opened at the top of the precast pile (2), thereby ensuring that the insertion hole (23) is connected to the upper insertion rod (222). When the precast pile (2) continues to slide down, the upper insertion rod (222) can be inserted into the insertion hole (23) to ensure that the precast pile (2) is firmly supported on the hard concrete. Therefore, the device can avoid the insertion hole (23) being located at the bottom of the pile pipe (1), which is not convenient for the precast pile (2) to be firmly connected to the hard concrete, thereby ensuring the firm support of the precast pile (2).

Claims

1. A civil engineering combined foundation pile, comprising a pile pipe (1), characterized in that: The inner wall of the pile pipe (1) is slidably connected to a prefabricated pile (2), one end of the prefabricated pile (2) is provided with a clearance hole (21), the inner wall of the clearance hole (21) is slidably connected to a positioning rod (3), one end of the positioning rod (3) is provided with a base rod (24), one end of the base rod (24) is detachably connected to one end of the positioning rod (3), the outer wall of the positioning rod (3) is slidably connected to a fixing plate (22), the bottom and top ends of the fixing plate (22) are fixedly connected to a plurality of lower plug rods (221) and upper plug rods (221) which are equidistantly distributed. 22), a socket (23) matching the upper plug rod (222) is provided at the bottom of the prefabricated pile (2), a center block (33) is snap-connected to one end of the positioning rod (3), two positioning rings (35) are fixedly connected to the outer side of the center block (33), a vertical rod (36) is slidably connected to the positioning ring (35), a plurality of positioning grooves (211) matching the socket (23) are provided at the top of the prefabricated pile (2), and a docking groove (223) is provided at the top of one of the upper plug rods (222).

2. The civil engineering combined foundation pile according to claim 1, characterized in that: One end of the base rod (24) is fixedly connected to a connecting column (241), a connecting groove (31) is provided at the bottom of the positioning rod (3), and the base rod (24) is threadedly connected to the connecting groove (31).

3. The civil engineering combined foundation pile according to claim 1, characterized in that: A protrusion (38) is fixedly connected to the outer wall of the positioning rod (3), a limit plate (361) is fixedly connected to the top of the vertical rod (36), a spring (37) is provided between the limit plate (361) and the positioning ring (35), and a fixing rod (34) is fixedly connected between the central block (33) and the positioning ring (35).

4. The civil engineering combined foundation pile according to claim 1, characterized in that: One end of the central block (33) is fixedly connected to a docking block (331), and a top groove (32) matching the docking block (331) is formed on the top of the positioning rod (3).

5. The civil engineering combined foundation pile according to claim 1, characterized in that: A clearance hole (21) matching the positioning rod (3) is provided at the center of the prefabricated pile (2), and a lower insertion rod (221) matching the positioning rod (3) is provided at the center of the fixing plate (22).

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