Precast pile for soft foundation treatment

Abstract

The precast pile for soft foundation treatment comprises a plurality of precast pile barrels, grouting holes are formed in the precast pile barrels, the precast pile barrels are provided with connecting pipes, the connecting pipes are inserted into the grouting holes, and bearing seats are arranged on the connecting pipes in a sliding mode; the face, back on to the first end of the prefabricated pile cylinder, of the bearing seat is connected to the second ends of other prefabricated pile cylinders, the height of the bearing seat is smaller than the length of the connecting pipe, a plurality of connecting holes are formed in the surface of the connecting pipe and distributed in the length direction of the connecting pipe, a matching hole is formed in the bearing seat, and a connecting inserting rod is arranged in the matching hole. And the connecting insertion rods are sequentially inserted into the matching holes and the connecting holes. The length of the portions, inserted into the prefabricated pile barrels, of the connecting pipes is adjusted, the lengths of the two prefabricated pile barrels are increased through the connecting pipes, the bearing seats are fixed to the different positions of the connecting pipes through the connecting inserting rods, the depth of the portions, inserted into the prefabricated pile barrels, of the connecting pipes is limited, and the adaptation degree of the spliced prefabricated pile barrels and the drilling depth is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction equipment, in particular to a prefabricated pile used for soft foundation treatment. Background Art

[0002] Soft foundation is composed of highly compressible soil layers such as silt, silty soil, and backfill soil. Due to the low bearing capacity of the soft foundation, it is easy to deform severely under load. In order to prevent accidents such as sinking and cracking of the soft foundation after construction, causing instability of the building, it is generally necessary to treat the soft foundation. During the construction process, prefabricated piles are usually driven into the soft foundation to improve the consolidation and stability of the soft foundation.

[0003] The existing prefabricated pile body includes a number of mixed soil extrusion solidification prefabricated piles, and adjacent mixed soil extrusion solidification prefabricated piles are connected by pile joints. A vibrating pipe pile driver is used to drill holes from the surface, drill to the designed depth in the foundation soil, form a borehole supported by a pipe sinking, put the required number of mixed soil extrusion solidification prefabricated piles into the pipe sinking, and then inject pressurized cement mortar into the center hole, so that the cement mortar is fully filled in the pores between the mixed soil piles and the joint gaps of the mixed soil piles. After the cement mortar is solidified, the seamless steel pipe and the prefabricated mixed soil pile form a complete mixed soil extrusion solidification prefabricated pile.

[0004] However, the drilling depths required for construction vary. When the difference between the length of multiple mixed soil extrusion solidification precast piles after splicing and the drilling depth is large, such as the difference between the length of multiple mixed soil extrusion solidification precast piles after splicing and the drilling depth is less than the length of one mixed soil extrusion solidification precast pile, the difference cannot be made up by continuing to splice. Therefore, the splicing length of the mixed soil extrusion solidification precast piles cannot be adjusted according to the drilling depth, and the applicability is poor, so it needs to be improved. Utility Model Content

[0005] In order to solve the technical problem that the length of the spliced ​​prefabricated piles cannot be adjusted according to the drilling depth, a prefabricated pile for soft foundation treatment is provided.

[0006] The present application provides a prefabricated pile for soft foundation treatment, comprising a plurality of prefabricated pile barrels, wherein a grouting hole is provided inside the prefabricated pile barrel along the length direction, a connecting pipe is provided at the first end of the prefabricated pile barrel, the connecting pipe is inserted into the grouting hole, a bearing seat is slidably provided on the connecting pipe, a side of the bearing seat facing away from the first end of the prefabricated pile barrel is connected to the second end of the other prefabricated pile barrels, the height of the bearing seat is less than the length of the connecting pipe, a plurality of connecting holes are provided on the surface of the connecting pipe, and the plurality of connecting holes are distributed along the length direction of the connecting pipe, a matching hole is provided on the bearing seat, a connecting rod is provided in the matching hole, and the connecting rod is sequentially inserted into the matching hole and the connecting hole.

[0007] Preferably, a limit rod is rotatably provided on a side of the bearing seat facing away from the first end of the prefabricated pile barrel, a limit block is provided on the end of the limit rod, a limit hole is provided on the second end face of the prefabricated pile barrel, a rotation cavity is connected inside the limit hole, the width of the limit hole is smaller than the length of the limit block, the length of the limit hole is larger than the length of the limit block, the diameter of the rotation cavity is larger than the length of the limit block, the limit rod and the limit block are slidably provided in the limit hole, and the limit block is clamped in the rotation cavity.

[0008] Preferably, the limiting block and the limiting rod are arranged in a T-shape.

[0009] Preferably, a flow channel is opened inside the prefabricated pile tube, a first end of the flow channel is communicated with the inner wall of the grouting hole, and a second end of the flow channel is communicated with the rotating chamber.

[0010] Preferably, a sleeve is provided on a surface of the bearing seat facing away from the first end of the prefabricated pile barrel, and the sleeve is sleeved on the second end of the prefabricated pile barrel.

[0011] Preferably, a first auxiliary hole is opened on the tube wall of the sleeve, an auxiliary rod is arranged in the first auxiliary hole, a second auxiliary hole is opened on the second end side of the prefabricated pile tube, and the auxiliary rod is inserted into the first auxiliary hole and the second auxiliary hole in sequence.

[0012] Preferably, the auxiliary rod is a screw rod.

[0013] Preferably, the second auxiliary hole is a screw hole.

[0014] In summary, the present application includes at least one of the following beneficial technical effects:

[0015] 1. The present application provides a connecting pipe at the first end of a prefabricated pile barrel, so that the connecting pipe is plugged into the inside of other prefabricated pile barrels. When the difference between the length of the prefabricated pile barrels after splicing and the drilling depth is less than the length of one prefabricated pile barrel, the length of the connecting pipe plugged into the prefabricated pile barrel is adjusted, and the length of the two prefabricated pile barrels is extended by the connecting pipe. Finally, the bearing seat is fixed to different positions of the connecting pipe by a connecting rod, and the depth of the connecting pipe plugged into other prefabricated pile barrels is limited, thereby improving the adaptability of the spliced ​​prefabricated pile barrels to the drilling depth.

[0016] 2. The present application provides a limit rod and a limit block on the bearing seat. When the limit block slides into the rotation cavity along the limit hole, the limit block is rotated so that the length direction of the limit block intersects with the width direction of the limit hole, so that the limit block can no longer slide out of the limit hole, so that the bearing seat is connected to the prefabricated pile barrel, thereby improving the connection strength between the two prefabricated pile barrels;

[0017] 3. The present application sets up a flow channel inside the prefabricated pile barrel. After concrete is poured into the grouting hole, the concrete flows into the rotating cavity through the flow channel. After the concrete solidifies, the limit block and the limit rod are fixed in the limit hole and the rotating cavity, so that the bearing seat is stably connected to other prefabricated pile barrels. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a plane diagram of the assembly relationship of the overall structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the prefabricated pile assembly relationship embodied in the utility model;

[0020] Figure 3 yes Figure 2 An enlarged schematic diagram showing the structure of part A.

[0021] Explanation of the reference numerals: 100, prefabricated pile tube; 110, grouting hole; 120, connecting pipe; 121, connecting hole; 130, bearing seat; 131, through hole; 132, extension pipe; 1321, matching hole; 1322, connecting rod; 133, rotating hole; 134, limiting rod; 1341, rotating rod; 1342, limiting block; 135, sleeve tube; 1351, first auxiliary hole; 136, auxiliary rod; 140, limiting hole; 150, rotating chamber; 151, limiting groove; 160, flow channel; 170, second auxiliary hole. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-3 This application is described in further detail.

[0023] A prefabricated pile for soft foundation treatment, referring to Figure 1 , including a plurality of prefabricated pile barrels 100, the plurality of prefabricated pile barrels 100 are connected in sequence, and a grouting hole 110 is opened through the interior of the prefabricated pile barrel 100, and the grouting hole 110 is along the length direction of the prefabricated pile barrel 100. A connecting assembly is installed between two connected prefabricated pile barrels 100.

[0024] Reference Figure 2 and Figure 3Specifically, the connection assembly includes a connection pipe 120 fixedly mounted on the first end of the precast pile barrel 100, the width of the connection pipe 120 is smaller than the width of the grouting hole 110, and the connection pipe 120 is plugged into the grouting hole 110 at the second end of the other precast pile barrel 100. A plurality of connection holes 121 are provided on the surface of the connection pipe 120, and the plurality of connection holes 121 are equidistantly distributed along the length direction of the connection pipe 120. A bearing seat 130 is sleeved on the connection pipe 120, a through hole 131 is provided at the center of the bearing seat 130, and the connection pipe 120 is inserted into the through hole 131. The height of the bearing seat 130 is smaller than the length of the connection pipe 120.

[0025] Reference Figure 2 and Figure 3 , the first end of the bearing seat 130 faces the first end of the prefabricated pile tube 100, and the first end of the bearing seat 130 is fixedly mounted with an extension tube 132, which is sleeved on the outside of the connecting tube 120. A matching hole 1321 is provided on the side of the extension tube 132, and a connecting rod 1322 is inserted into the matching hole 1321. When adjusting the position of the bearing seat 130 on the connecting tube 120, the matching hole 1321 is made to face the connecting hole 121 at the corresponding position, and the connecting rod 1322 is inserted into the matching hole 1321 and the connecting hole 121 in sequence to limit the bearing seat 130 from sliding along the connecting tube 120 again.

[0026] Reference Figure 2 and Figure 3 , the second end of the bearing seat 130 faces away from the first end of the precast pile tube 100, and the second end of the bearing seat 130 abuts against the second end of the other precast pile tube 100. A rotation hole 133 is provided inside the bearing seat 130, and the two ends of the rotation hole 133 respectively penetrate the first end and the second end of the bearing seat 130, and the rotation hole 133 is provided along the height direction of the bearing seat 130. A limit rod 134 is rotatably installed inside the rotation hole 133, and the length of the limit rod 134 is greater than the length of the rotation hole 133. The first end and the second end of the limit rod 134 protrude from the first end and the second end surface of the bearing seat 130 respectively. A rotation rod 1341 is installed at the second end of the limit rod 134, and the rotation rod 1341 is used to facilitate the control of the rotation of the limit rod 134. A limit block 1342 is installed at the first end of the limit rod 134, and the limit block 1342 and the limit rod 134 are arranged in a T shape. The width of the limit block 1342 is equal to that of the limit rod 134.

[0027] Reference Figure 2 and Figure 3The prefabricated pile barrel 100 is provided with a limiting hole 140 and a rotating cavity 150. The limiting hole 140 is provided along the length direction of the prefabricated pile barrel 100, and the first end of the limiting hole 140 is connected to the second end face of the prefabricated pile barrel 100. The width of the limiting hole 140 is greater than the width of the limiting rod 134, the length of the limiting hole 140 is greater than the length of the limiting block 1342, and the first end of the limiting rod 134 is inserted into the limiting hole 140.

[0028] Reference Figure 2 and Figure 3 The second end of the limiting hole 140 is connected to the rotating chamber 150, and the rotating chamber 150 is arranged in a ring shape around the center of the prefabricated pile barrel 100. The width of the rotating chamber 150 is greater than the width of the limiting hole 140, and the rotating chamber 150 can make the limiting block 1342 rotate in the rotating chamber 150. The limiting block 1342 rotates in the rotating chamber 150 to achieve the function of connecting the bearing seat 130 with other prefabricated pile barrels 100. A limiting groove 151 is also provided on one side of the rotating chamber 150 close to the second end of the prefabricated pile barrel 100, and the limiting block 1342 is clamped in the limiting groove 151.

[0029] Reference Figure 2 and Figure 3 The precast pile barrel 100 is also provided with a flow channel 160, the first end of which is in communication with the wall of the grouting hole 110, and the second end of which is in communication with the side of the rotating chamber 150 away from the limiting hole 140. When the precast pile barrel 100 is installed and concrete is poured into the grouting hole 110, the concrete flows into the rotating chamber 150 through the flow channel 160, and the solidified concrete in the rotating chamber 150 fixes the limiting block 1342 in the clamping state, preventing the limiting block 1342 from being separated from the rotating chamber 150.

[0030] Reference Figure 2 and Figure 3 , a sleeve 135 is installed at the first end of the bearing seat 130, and the sleeve 135 is installed at the edge of the bearing seat 130, and the inner diameter of the sleeve 135 is larger than the outer diameter of the precast pile barrel 100. The sleeve 135 is sleeved on the second end side of the other precast pile barrels 100. A first auxiliary hole 1351 is opened on the side of the sleeve 135, and an auxiliary rod 136 is inserted into the first auxiliary hole 1351, and the auxiliary rod 136 is a screw. A second auxiliary hole 170 is opened on the second end side of the precast pile barrel 100, and the second auxiliary hole 170 is a screw hole. When the sleeve 135 is sleeved on the second end of the precast pile barrel 100, the second auxiliary hole 170 is opposite to the first auxiliary hole 1351. At this time, the auxiliary rod 136 is threadedly connected in the second auxiliary hole 170 to limit the sleeve 135 from being separated from the second end of the precast pile barrel 100.

[0031] The implementation principle of the embodiment of the present application is: when the difference between the length of the precast pile barrels 100 after splicing and the drilling depth is less than the length of one precast pile barrel 100, the positions of the two adjacent precast pile barrels 100 are adjusted respectively, the depth of the connecting pipe 120 inserted into the grouting hole 110 is changed, and the length of the two precast pile barrels 100 is extended.

[0032] Then, the position of the bearing seat 130 on the connecting tube 120 is adjusted so that the first end of the bearing seat 130 abuts against the second end of the other prefabricated pile 100. The connecting rod 1322 is inserted into the connecting hole 121 and the matching hole 1321 to limit the movement of the bearing seat 130.

[0033] At this time, the limiting rod 134 in the supporting seat 130 is inserted into the limiting hole 140, and the limiting block 1342 is located in the rotating cavity 150. The limiting rod 134 is rotated to make the limiting block 1342 engage with the limiting groove 151, so that the limiting block 1342 can no longer be separated from the limiting hole 140.

[0034] The sleeve 135 is sleeved on the second end of the connected prefabricated pile 100, and the auxiliary rod 136 is passed through the first auxiliary hole 1351 and the second auxiliary hole 170 in sequence, and the auxiliary rod 136 is threadedly connected with the second auxiliary hole 170 to limit the sleeve 135 from being separated from the prefabricated pile 100.

[0035] When pouring concrete into the grouting hole 110 , the uncured concrete flows into the rotating chamber 150 through the flow channel 160 , fixing the position of the limit block 1342 .

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A prefabricated pile for soft foundation treatment, characterized in that: The invention comprises a plurality of prefabricated pile barrels (100), wherein a grouting hole (110) is provided in the interior of the prefabricated pile barrel (100) along the length direction, a connecting pipe (120) is provided at the first end of the prefabricated pile barrel (100), the connecting pipe (120) is inserted into the grouting hole (110), a bearing seat (130) is slidably provided on the connecting pipe (120), and a surface of the bearing seat (130) facing away from the first end of the prefabricated pile barrel (100) is connected to the second end of the other prefabricated pile barrels (100), and the The height of the bearing seat (130) is smaller than the length of the connecting tube (120); a plurality of connecting holes (121) are provided on the surface of the connecting tube (120); the plurality of connecting holes (121) are distributed along the length direction of the connecting tube (120); a matching hole (1321) is provided on the bearing seat (130); a connecting rod (1322) is provided in the matching hole (1321); the connecting rod (1322) is sequentially inserted into the matching hole (1321) and the connecting hole (121).

2. The prefabricated pile for soft foundation treatment according to claim 1, characterized in that: A limiting rod (134) is rotatably provided on a surface of the bearing seat (130) facing away from the first end of the prefabricated pile barrel (100), a limiting block (1342) is provided at the end of the limiting rod (134), a limiting hole (140) is provided on the second end surface of the prefabricated pile barrel (100), the interior of the limiting hole (140) is connected with a rotation cavity (150), the width of the limiting hole (140) is smaller than the length of the limiting block (1342), the length of the limiting hole (140) is larger than the length of the limiting block (1342), the diameter of the rotation cavity (150) is larger than the length of the limiting block (1342), the limiting rod (134) and the limiting block (1342) are slidably provided in the limiting hole (140), and the limiting block (1342) is engaged in the rotation cavity (150).

3. The prefabricated pile for soft foundation treatment according to claim 2, characterized in that: The limiting block (1342) and the limiting rod (134) are arranged in a T shape.

4. The prefabricated pile for soft foundation treatment according to claim 2, characterized in that: A flow channel (160) is provided inside the prefabricated pile tube (100), a first end of the flow channel (160) is communicated with the inner wall of the grouting hole (110), and a second end of the flow channel (160) is communicated with the rotating chamber (150).

5. The prefabricated pile for soft foundation treatment according to claim 1, characterized in that: A sleeve tube (135) is provided on a side of the bearing seat (130) facing away from the first end of the prefabricated pile barrel (100), and the sleeve tube (135) is sleeved on the second end of the prefabricated pile barrel (100).

6. The prefabricated pile for soft foundation treatment according to claim 5, characterized in that: A first auxiliary hole (1351) is provided on the tube wall of the sleeve tube (135), an auxiliary rod (136) is arranged in the first auxiliary hole (1351), a second auxiliary hole (170) is provided on the side surface of the second end of the prefabricated pile tube (100), and the auxiliary rod (136) is inserted into the first auxiliary hole (1351) and the second auxiliary hole (170) in sequence.

7. The prefabricated pile for soft foundation treatment according to claim 6, characterized in that: The auxiliary rod (136) is a screw rod.

8. The prefabricated pile for soft foundation treatment according to claim 7, characterized in that: The second auxiliary hole (170) is a screw hole.

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