CN203654335U - Disposable jack for self-balanced method test for prestressed pipe pile - Google Patents
Disposable jack for self-balanced method test for prestressed pipe pile Download PDFInfo
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- CN203654335U CN203654335U CN201420010835.0U CN201420010835U CN203654335U CN 203654335 U CN203654335 U CN 203654335U CN 201420010835 U CN201420010835 U CN 201420010835U CN 203654335 U CN203654335 U CN 203654335U
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- plate
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- oil cylinder
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Abstract
The utility model discloses a disposable jack for self-balanced method test for a prestressed pipe pile. The disposable jack comprises an upper locating plate, a lower locating plate, a lower bearing sleeve and an oil cylinder, wherein the upper locating plate is a round plate, the lower locating plate is an annular plate, the lower bearing sleeve is fixed at the lower end of the lower locating plate, the lower bearing sleeve is cylinder-shaped, and the oil cylinder is mounted between the upper locating plate and the lower bearing sleeve. The disposable jack for the self-balanced method test for the prestressed pipe pile is simple in structure, to be more specific, the disposable jack only comprises two round locating plates, the lower bearing sleeve for holding the oil cylinder and a jack body, and the disposable jack is capable of guaranteeing the normal work without any complex component; the disposable jack has great bearing capacity, to be more specific, the inner diameter of a load bearing box is approximately equal to that of the pipe pile, so that the oil cylinder can be manufactured as large as possible, and the tonnage of the jack is increased to meet the bearing capacity of the test.
Description
Technical field
The utility model relates to the disposable jack of a kind of pile for prestressed pipe self-balance test.
Background technology
Along with being widely used of concrete pre-stress pile tube, adopting self-balancing approach to carry out peg to pile tube and also progressively grow up.It is a kind of by the well-designed load box that can be used for loading adopting the topmost device of self-balancing approach peg, and this device is mainly made up of the location load-bearing steel plate and the inner hydraulic jack that connect two sections pile crown place.Load box is fixed on to pile tube equalization point place computed in advance, exert pressure by built-in hydraulic jack, location-plate and hypomere stake in promotion, realize upper and lower two joint stakes motion up and down respectively, by the displacement transfer device being connected on load box, displacement signal is delivered to ground, realizes data analysis.
Common concrete pile load box is in advance in the welding of equalization point place, and then concrete perfusion, has the parcel of concrete bodies and stake to form one around load box after formation pile body, be not subject to external environmental interference; And be all in factory, to have made in advance for prestressed concrete pipe pile, as the load box with common there will be soil compaction effect in piling process, have a strong impact on the structural performance of load box.Is all generally to make special load box, internal construction is compared ordinary concrete load box and is wanted complicated a lot, is therefore design or install and all will expend a large amount of manpower and materials.
Summary of the invention
The utility model, in order to address the above problem, has proposed the disposable jack of a kind of pile for prestressed pipe self-balance test, and this apparatus structure is simple, and stability is strong, and simple installation loads tonnage large, is applicable to the pile tube of various models.
To achieve these goals, the utility model adopts following technical scheme:
The disposable jack of a kind of pile for prestressed pipe self-balance test, comprise location-plate, lower location-plate, lower carrying cover and oil cylinder, wherein, described upper location-plate is that circular slab, lower location-plate are annular slab, lower carrying cover is fixed on the lower end of lower location-plate, lower carrying cover is cylindrical tube shape, and oil cylinder is arranged between location-plate and lower carrying cover.
Described lower location-plate is annular slab, and its internal diameter is greater than oil cylinder external diameter.
The cylinder head body of institute's oil cylinder runs through the interior ring place of lower location-plate and withstands on location-plate.
On described upper location-plate, be welded with two top offset sensors.
On described lower location-plate, be welded with two bottom offset sensors.
Operating principle of the present utility model is:
Self-balancing operation: in process of the test, load box is placed on self-balancing point position, and the pile tube on top welds mutually with the upper location-plate of load box, and lower tubular is welded mutually with lower location-plate.The open top that in pressure process, oil cylinder is upward through lower location-plate is on upper location-plate, and thrust is delivered to upper pipe joint stake by upper location-plate; The counter-force of pushing up on oil cylinder is delivered to lower carrying and puts, and then be delivered in lower pipe joint stake by lower location-plate, press down by top on pile tube being carried out at self-balancing point place the self-balancing operation that realizes pile tube like this, upper and lower displacement sensor detects respectively the amount of movement of upper and lower pipe joint stake.
The beneficial effects of the utility model are:
1, simple in structure: this load box only has two circular location-plates, lower carrying cover and jack four parts of placing oil cylinder form, and there is no complicated original paper, when can ensureing work, can normally carry out;
2, bearing capacity is large: load box internal diameter almost approximates the internal diameter of pile tube, and what make oil cylinder can be done is enough large, and then has increased the tonnage demand of jack, meets the bearing capacity of test;
3, easy and simple to handle: when installing load box and testing, only jack oil pipe need to be received on oil pump, be pressurized to specified exerting oneself according to testing software, there is no other operation requirements.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is scheme of installation of the present utility model.
Wherein, 1, upper location-plate, 2, lower location-plate, 3, lower carrying cover, 4, oil cylinder, 5, oil pipe; 6, top offset sensor, 7, bottom offset sensor, 8, ground displacement sensor; 9, hydraulic loading device.
Detailed description of the invention:
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1 and Figure 2, the disposable jack of a kind of pile for prestressed pipe self-balance test, comprise location-plate 1, lower location-plate 2, lower carrying cover 3 and oil cylinder 4, wherein, upper location-plate 1 is that circular slab, lower location-plate 2 are annular slab, lower carrying cover 3 is fixed on the lower end of lower location-plate 2, and lower carrying cover 3 is cylindrical tube shape, and oil cylinder 4 is arranged between location-plate 1 and lower carrying cover 3.
Lower location-plate 2 is annular slab, and its internal diameter is greater than oil cylinder 4 external diameters.
The cylinder head body of oil cylinder 4 runs through the interior ring place of lower location-plate 2 and withstands on location-plate.
On upper location-plate 1, be welded with two top offset sensors 6.
On lower location-plate 2, be welded with two bottom offset sensors 7.
Operating principle of the present utility model is:
In process of the test, load box is placed on self-balancing point position, and the pile tube on top welds mutually with the upper location-plate 1 of load box, and lower tubular is welded mutually with lower location-plate 2.The open top that in pressure process, oil cylinder 4 is upward through lower location-plate 2 is on upper location-plate 1, and thrust is delivered to upper pipe joint stake by upper location-plate 1; On oil cylinder 4, the counter-force on top is delivered on lower carrying cover 3, and then be delivered in lower pipe joint stake by lower location-plate 2, press down by top on pile tube being carried out at self-balancing point place the self-balancing operation that realizes pile tube like this, upper and lower displacement sensor 7 detects respectively the amount of movement of upper and lower pipe joint stake.
The mounting method of this load box is:
Calculate the equalization point position of load box according to test situation, produce the pile tube of appropriate length.The top of saving under the lower location-plate of load box 2 and pile tube is welding as one, and the upper location-plate 1 that saves hypomere and load box on pile tube is welding as one.Wire rope is fixed on top offset sensor 6 and bottom offset sensor 7, draws the good upper and lower displacement of ground and mark from pile tube inside.Afterwards stake is driven underground, carries out experimental test meet stop time of the soil body according to code requirement after.
When experiment starts, oil pipe 5 is received on hydraulic loading device 9, controlled the heap(ed) capacity of every grade, and be upper and lower displacement amount by the displacement of ground displacement sensor 8 measuring steel wire ropes.After off-test, to data analysis, calculate the actual carrying capacity of stake.
By reference to the accompanying drawings detailed description of the invention of the present utility model is described although above-mentioned; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendments that creative work can make or distortion still in protection domain of the present utility model.
Claims (5)
1. the disposable jack of pile for prestressed pipe self-balance test, it is characterized in that: comprise location-plate, lower location-plate, lower carrying cover and oil cylinder, wherein, described upper location-plate is that circular slab, lower location-plate are annular slab, lower carrying cover is fixed on the lower end of lower location-plate, lower carrying cover is cylindrical tube shape, and oil cylinder is arranged between location-plate and lower carrying cover.
2. the disposable jack of a kind of pile for prestressed pipe self-balance test as claimed in claim 1, is characterized in that: described lower location-plate is annular slab, and its internal diameter is greater than oil cylinder external diameter.
3. the disposable jack of a kind of pile for prestressed pipe self-balance test as claimed in claim 1, is characterized in that: the interior ring place that the cylinder head body of described oil cylinder runs through lower location-plate withstands on location-plate.
4. the disposable jack of a kind of pile for prestressed pipe self-balance test as claimed in claim 1, is characterized in that: on described upper location-plate, be welded with two top offset sensors.
5. the disposable jack of a kind of pile for prestressed pipe self-balance test as claimed in claim 1, is characterized in that: on described lower location-plate, be welded with two bottom offset sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420010835.0U CN203654335U (en) | 2014-01-08 | 2014-01-08 | Disposable jack for self-balanced method test for prestressed pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420010835.0U CN203654335U (en) | 2014-01-08 | 2014-01-08 | Disposable jack for self-balanced method test for prestressed pipe pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203654335U true CN203654335U (en) | 2014-06-18 |
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ID=50920742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420010835.0U Expired - Fee Related CN203654335U (en) | 2014-01-08 | 2014-01-08 | Disposable jack for self-balanced method test for prestressed pipe pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203654335U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507352A (en) * | 2016-02-04 | 2016-04-20 | 江苏城工建设科技有限公司 | On-site self-balancing anti-pulling test method for grouted core of pipe pile |
-
2014
- 2014-01-08 CN CN201420010835.0U patent/CN203654335U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507352A (en) * | 2016-02-04 | 2016-04-20 | 江苏城工建设科技有限公司 | On-site self-balancing anti-pulling test method for grouted core of pipe pile |
| CN105507352B (en) * | 2016-02-04 | 2017-09-29 | 江苏城工建设科技有限公司 | Pile tube fills the live self-balancing pullout tests method of core |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20190108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |