CN213709495U - Pile end water jetting auxiliary pile sinking and post grouting device - Google Patents
Pile end water jetting auxiliary pile sinking and post grouting device Download PDFInfo
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- CN213709495U CN213709495U CN202022514596.0U CN202022514596U CN213709495U CN 213709495 U CN213709495 U CN 213709495U CN 202022514596 U CN202022514596 U CN 202022514596U CN 213709495 U CN213709495 U CN 213709495U
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Abstract
In order to solve the above problems of the pile sinking difficulty of the concrete pipe pile, the utility model provides a pile end water jet auxiliary pile sinking and post grouting device, which comprises a precast pipe pile, a water jet pipe, a guide pipe and an air pipe, wherein the water jet pipe is arranged inside the precast pipe pile, the water jet pipe is arranged in the concrete layer of the precast pipe pile, the water jet pipe is distributed along the length direction of the pipe pile, the upper end of the water jet pipe is connected with a water pump, the lower end of the water jet pipe is connected with a water jet nozzle, the guide pipe is arranged in the pile hole of the precast pipe pile, the upper end of the guide pipe is arranged above the precast pipe pile, the air inlet end of the air pipe is connected with an air pump and used for supplying air to the guide pipe, the air outlet end of the air pipe faces to the upper part of the guide pipe, the water jet pipe is used for sinking the pile end through the water jet pipe, the pile sinking resistance is reduced, the waste slurry formed by water jet impact forms, effectively improving the bearing capacity of the pipe pile.
Description
Technical Field
The utility model relates to a pile foundation construction technical field, in particular to stake end is penetrated water and is assisted pile sinking and back slip casting device.
Background
The construction of the high-strength concrete precast tubular pile by adopting a static pile sinking method widely in the market at present has the following defects: when the pile end meets a hard soil layer (particularly thicker silt, silt and fine sand) in the soil layer, the pile end cannot penetrate through the soil layer often even if the pile pressing force is improved. In addition, when the pile end enters the bearing layer, the resistance is suddenly increased, and the depth of the pile end entering the bearing layer cannot reach the depth required by the design, so that the problems of pile cutting, design change and the like are often caused, and even the later-stage bearing capacity of the foundation pile is insufficient. The method of pre-drilling and then sinking the pile is a common method in engineering, which wastes time and labor and increases the construction cost.
Disclosure of Invention
In order to solve the problem, the utility model provides a stake end is penetrated water and is assisted pile sinking and back slip casting device, the technical scheme of adoption as follows:
the utility model provides a stake of supplementary pile sinking and back slip casting device of stake end water jet, a serial communication port, include precast tubular pile, set up in inside water jet pipe, the trachea of precast tubular pile, the water jet pipe is located precast tubular pile's concrete in situ to water jet pipe distributes along tubular pile length direction, and water jet pipe upper end links to each other with the water pump, and the lower extreme is connected with water jet nozzle, the pipe sets up downtheholely in precast tubular pile, and the pipe upper end is located precast tubular pile top, the trachea inlet end links to each other with the air pump for supply gas in the guide pipe, and trachea exhaust end is towards the pipe top.
Preferably, the precast tubular piles are provided with a plurality of precast tubular piles, and the water jetting pipes between two adjacent precast tubular piles are connected through pipeline connectors.
Preferably, the water inlet of the water injection pipe is provided with a filtering device.
Preferably, the water pump is a multi-stage centrifugal clean water pump.
The beneficial effects of the utility model reside in that:
1. the water jetting pipe jets water to the pile end to sink the pile, so that pile sinking resistance at the pile end is greatly reduced, the pile end can smoothly pass through a hard interlayer in a soil layer, the pile end smoothly enters the depth of a bearing layer, the depth of a design requirement is reached, and the problems of pile cutting, design change and the like are avoided;
2. the waste slurry formed by water jet impact forms gas-lift reverse circulation under the action of the air pipe and the guide pipe, and the water jet waste slurry is discharged into a waste slurry pool, so that the problem of waste slurry turbulence is avoided;
3. the injection pipe is preset in the precast tubular pile, when a plurality of precast tubular piles are driven to sink the pile, only the lower end of the guide pipe is required to be located below the liquid level of waste slurry, the length of the guide pipe is effectively reduced, the construction efficiency is improved, and after pile sinking is finished, the injection pipe can be used for grouting the bottom of the tubular pile, so that the bearing capacity of the tubular pile is improved.
Drawings
FIG. 1 is a schematic view of the structure of the present invention
The device comprises a prefabricated pipe pile, a water injection pipe, a conduit, a gas pipe, a holding and pressing mechanism and a pipeline connector, wherein the prefabricated pipe pile is 1-2-the water injection pipe, the conduit is 3-the gas pipe, the gas pipe is 4-the holding and pressing mechanism is 5-the pipeline connector is 6-the pipeline connector.
Detailed Description
An exemplary embodiment of the present disclosure will be described in detail below with reference to fig. 1. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The pile end water jetting auxiliary pile sinking and post grouting device shown in figure 1 comprises a precast tubular pile 1, water jetting pipes 2, guide pipes 3 and air pipes 4, wherein the water jetting pipes 2 distributed along the height direction are pre-embedded in a concrete layer when the precast tubular pile 1 is manufactured, the two water jetting pipes 2 are symmetrically distributed, the upper ends of the water jetting pipes 2 slightly extend out of the upper part of the precast tubular pile 1 for a certain length and are connected with a water outlet of a water pump, the lower ends of the water jetting pipes 2 are fixedly connected with a pipeline connector 6, when a plurality of precast tubular piles 1 are constructed in a pile sinking mode, the two water jetting pipes 2 which are adjacent up and down are convenient to be connected, the diameter of each guide pipe 3 is smaller than the inner diameter of each precast tubular pile 1, when the pile sinking mode is carried out, each guide pipe 3 is positioned in an inner hole of each precast tubular pile 1, the upper end of each guide pipe 3 is connected with a waste, the air outlets are located in the lower part of the interior of the duct 3 and are distributed upwards.
When the device is used for pile sinking construction, the principle is as follows: firstly, a precast tubular pile 1 is hung into a holding and pressing mechanism 5, the upper end of a water jetting pipe 2 is connected with a water pump, the holding and pressing mechanism 5 presses the precast tubular pile 1 into a coating, water is jetted to the bottom of the pile through the water jetting pipe 2, pile sinking resistance at the pile end is reduced, a guide pipe 3 is placed in an inner hole of the precast tubular pile 1, the lower end of the guide pipe 3 is ensured to be positioned below the liquid level of waste slurry generated by water jetting, the air pump is started, a compressed gas is sent into the guide pipe 3 through an air pipe 4, and the waste slurry is discharged into a waste slurry pool through a gas lift reverse circulation principle; when the precast tubular pile 1 reaches the pile splicing height, the water jetting pipes 2 of the upper precast tubular pile 1 and the lower precast tubular pile 1 are firstly connected through the pipeline connector 6, the adjacent precast tubular pile 1 is ensured not to leak water at the joint, then the water jetting pile sinking and the pipe grout discharging are continued, the steps are repeated until the concrete tubular pile sinking of the whole structure is completed, in addition, after the pile end is subjected to bottom sealing treatment, the pile end is in a closed state, post grouting treatment can be carried out on the pile bottom through the water jetting pipes 2, and the pile bearing capacity is improved.
The water injection pipe 2 injects water to the bottom of the precast tubular pile 1 to reduce pile sinking resistance, the water injection pipe 2 is precast inside the precast tubular pile 1, and when the pile sinking of the precast tubular piles 1 is constructed, the guide pipe 3 only needs to ensure that the water inlet at the lower end of the guide pipe is positioned below the liquid level of waste slurry, so that the length required by the guide pipe 3 is reduced.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements can be made, and these improvements should also be regarded as the protection scope of the present invention.
Claims (4)
1. The utility model provides a stake of supplementary pile sinking and back slip casting device of stake end water jet, a serial communication port, include precast tubular pile, set up in inside water jet pipe, the trachea of precast tubular pile, the water jet pipe is located precast tubular pile's concrete in situ to water jet pipe distributes along tubular pile length direction, and water jet pipe upper end links to each other with the water pump, and the lower extreme is connected with water jet nozzle, the pipe sets up downtheholely in precast tubular pile, and the pipe upper end is located precast tubular pile top, the trachea inlet end links to each other with the air pump for supply gas in the guide pipe, and trachea exhaust end is towards the pipe top.
2. The pile-end water-jetting auxiliary pile-sinking and post-grouting device according to claim 1, wherein the precast tubular piles are provided in plurality, and the water-jetting pipes between two adjacent precast tubular piles are connected through a pipe connector.
3. The pile-end water-jet assisted pile sinking and post-grouting device of claim 1, wherein the water-jet pipe water inlet is provided with a filtering device.
4. The pile-end water-jet assisted pile-sinking and post-grouting device of claim 1, wherein the water pump is a multi-stage centrifugal clean water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022514596.0U CN213709495U (en) | 2020-11-04 | 2020-11-04 | Pile end water jetting auxiliary pile sinking and post grouting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022514596.0U CN213709495U (en) | 2020-11-04 | 2020-11-04 | Pile end water jetting auxiliary pile sinking and post grouting device |
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| CN213709495U true CN213709495U (en) | 2021-07-16 |
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| CN202022514596.0U Active CN213709495U (en) | 2020-11-04 | 2020-11-04 | Pile end water jetting auxiliary pile sinking and post grouting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114032901A (en) * | 2021-11-26 | 2022-02-11 | 中交四航工程研究院有限公司 | Device for improving construction efficiency of open pile and construction method |
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2020
- 2020-11-04 CN CN202022514596.0U patent/CN213709495U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114032901A (en) * | 2021-11-26 | 2022-02-11 | 中交四航工程研究院有限公司 | Device for improving construction efficiency of open pile and construction method |
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