CN217556914U - Prestressed pile loading device - Google Patents
Prestressed pile loading device Download PDFInfo
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- CN217556914U CN217556914U CN202123402645.2U CN202123402645U CN217556914U CN 217556914 U CN217556914 U CN 217556914U CN 202123402645 U CN202123402645 U CN 202123402645U CN 217556914 U CN217556914 U CN 217556914U
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- prestressed
- pile cap
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Abstract
The utility model discloses a prestressed pile loading device, belonging to the prestressed pile construction technical field, comprising a pile cap, a loading cylinder body, a connecting component and a loading pipeline; the loading cylinder body is formed by mutually nesting an upper cylinder body and a lower cylinder body, the top end of the lower cylinder body is provided with a plurality of layers of seals, and the bottom end of the lower cylinder body is connected with the pile cap in a welding mode; and a control valve is arranged on the loading pipeline. The utility model discloses an at pile bolck installation pile cap and loading cylinder body to carry out the slip casting on loading cylinder body top, reach the effect of applying prestressing force, during this period, stock static pressure stake machine can continue to be under construction next stake, thereby has improved the efficiency of construction, has saved the time limit for a project.
Description
Technical Field
The utility model relates to a prestressed pile construction technical field, in particular to prestressed pile loading device.
Background
A common technology for reinforcing and correcting the foundation of existing building is anchor rod static pressure pile technology, which is characterized by that on the basis of existing building, pile-pressing holes and anchor rod holes are cut according to the design requirements, the anchor rods are embedded by adhesive, then the pile-pressing frame is mounted and connected with the foundation of building into one body, and the self-weight of existing building is used as counter-force, the prefabricated pile sections are pressed into the soil section by means of jack, and the pile sections are connected by means of sulfur cement or welding. When the pile pressing force or the pile pressing depth meets the design requirements, the pile head and the original foundation are poured together by using micro-expansion concrete, and the pile begins to bear force, so that the aims of improving the bearing capacity of the foundation and controlling the settlement are fulfilled.
But traditional stock static pressure stake engineering time is longer, and the efficiency of construction is low, for solving this problem, the utility model provides a prestressed pile loading device can improve the efficiency of construction of stock static pressure stake machine by a wide margin.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem who exists among the prior art, the utility model provides a prestressed pile loading device has overcome the not enough of prior art. Through installing at the pile bolck the utility model provides a pile cap and loading cylinder body to carry out the slip casting on loading cylinder body top, reach the effect of applying prestressing force, during this period, stock static pressure stake machine can continue to be under construction next stake, thereby has improved the efficiency of construction, has saved the time limit for a project.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a pre-stressed pile loading device is characterized by comprising a pile cap, a loading cylinder body, a connecting component and a loading pipeline; the loading cylinder body is formed by mutually nesting an upper cylinder body and a lower cylinder body, the top end of the lower cylinder body is provided with a plurality of layers of seals, and the bottom end of the lower cylinder body is connected with the pile cap in a welding mode; and a control valve is arranged on the loading pipeline.
Preferably, the diameter of the pile cap is 2cm to 5cm larger than that of the prestressed pile, the length of the pile cap is 50cm to 100cm, and the thickness of a plate of the pile cap is 5mm to 10mm.
Preferably, the diameter of the loading cylinder is 0.9 to 1.0 time of the diameter of the pile cap.
Preferably, a pressure gauge is arranged on the loading pipeline and is arranged between the connecting component and the control valve.
The utility model discloses the beneficial technological effect who brings:
(1) The construction efficiency of the anchor rod static pressure pile method for the prestressed pile is improved, the pile cap and the loading cylinder body are adopted, grouting is carried out in the loading cylinder body, application of prestress is achieved, the anchor rod static pressure pile machine is not required to apply the prestress, and therefore the construction time of the anchor rod static pressure pile machine for each pile is shortened. (2) The prestress is controllable, and the pressure in the cylinder body is adjusted by adjusting the controllable grouting port at the top of the loading cylinder body, so that the controllable effect of the prestress is achieved. (3) The reinforcing effect is good, and the prestress is applied after the pile top and the foundation slab are connected through the poured concrete, so that the prestress loss is less, and the reinforcing effect is better.
Drawings
Fig. 1 is the utility model relates to a prestressed pile loading device's schematic structure diagram.
Fig. 2 is a structural section view of the prestressed pile loading device of the present invention.
In the figure: 1-pile cap, 2-loading cylinder, 3-connecting component and 4-loading pipeline.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:
example 1:
as shown in fig. 1 to 2, a prestressed pile loading device includes a pile cap 1, a loading cylinder 2, a connecting member 3, and a loading pipeline 4; the loading cylinder body 2 is formed by nesting an upper cylinder body and a lower cylinder body, the top end of the lower cylinder body is provided with a plurality of layers of seals, and the bottom end of the lower cylinder body is connected with the pile cap 1 in a welding mode; and a control valve is arranged on the loading pipeline 4.
Preferably, the diameter of the pile cap 1 is 2cm larger than that of the prestressed pile, the length of the pile cap 1 is 50cm, and the thickness of the plate of the pile cap 1 is 5mm.
Preferably, the diameter of the loading cylinder 2 is 0.9 times the diameter of the pile cap 1.
Preferably, a pressure gauge is arranged on the loading pipeline 4, and the pressure gauge is arranged between the connecting component 3 and the control valve.
Example 2:
right the utility model provides a prestressed pile loading device's application method introduces as follows in detail:
as shown in FIGS. 1 to 2, step 1: pre-pressing the steel pipe pile;
breaking the reinforced concrete in a set hole site range on the existing building bottom plate, and pressing the steel pipe pile to a set depth by using anchor rod static pressure pile equipment;
step 2: installing a prestress loading device;
placing a prestress loading device above the steel pipe pile, nesting the top of the steel pipe pile into a pile cap 1, and connecting a high-pressure grouting pump with a loading pipeline 4; the outer part of the loading cylinder body 2 is welded with the steel bars on the bottom plate, and the gap between the outer part of the loading cylinder body 2 and the bottom plate is filled with high-strength concrete until the high-strength concrete reaches the designed strength;
and step 3: operating a prestress loading device;
starting a control valve and starting a high-pressure grouting pump, pumping cement slurry with a bleeding-free and shrinkage-free water-cement ratio of 0.5 into the cavity of the loading cylinder body 2, and closing the control valve until the designed pressure is reached;
and 4, step 4: completing construction of the prestressed pile;
and after the cement slurry in the cavity of the loading cylinder body 2 is solidified and reaches the design strength, removing the connecting member 3, the loading pipeline 4 and the high-pressure grouting pump, and leveling the bottom plate to complete the construction of the prestressed pile.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention also belong to the protection scope of the present invention.
Claims (4)
1. A pre-stressed pile loading device is characterized by comprising a pile cap, a loading cylinder body, a connecting component and a loading pipeline; the loading cylinder body is formed by nesting an upper cylinder body and a lower cylinder body, the top end of the lower cylinder body is provided with multiple layers of seals, and the bottom end of the lower cylinder body is connected with the pile cap in a welding mode; and a control valve is arranged on the loading pipeline.
2. The prestressed pile loading device as claimed in claim 1, wherein the diameter of said pile cap is from 2cm to 5cm larger than the diameter of the prestressed pile, the length of the pile cap is from 50cm to 100cm, and the thickness of the plate of the pile cap is from 5mm to 10mm.
3. The prestressed pile loading device as claimed in claim 1, wherein the diameter of said loading cylinder is 0.9 to 1.0 times of the diameter of the pile cap.
4. The pre-stressed pile loading device of claim 1, wherein a pressure gauge is disposed on the loading pipeline, and the pressure gauge is disposed between the connecting member and the control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123402645.2U CN217556914U (en) | 2021-12-31 | 2021-12-31 | Prestressed pile loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123402645.2U CN217556914U (en) | 2021-12-31 | 2021-12-31 | Prestressed pile loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217556914U true CN217556914U (en) | 2022-10-11 |
Family
ID=83466514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123402645.2U Active CN217556914U (en) | 2021-12-31 | 2021-12-31 | Prestressed pile loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217556914U (en) |
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2021
- 2021-12-31 CN CN202123402645.2U patent/CN217556914U/en active Active
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