CN2769356Y - Film type loading box for pile foundation static load test - Google Patents
Film type loading box for pile foundation static load test Download PDFInfo
- Publication number
- CN2769356Y CN2769356Y CN 200520069765 CN200520069765U CN2769356Y CN 2769356 Y CN2769356 Y CN 2769356Y CN 200520069765 CN200520069765 CN 200520069765 CN 200520069765 U CN200520069765 U CN 200520069765U CN 2769356 Y CN2769356 Y CN 2769356Y
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- CN
- China
- Prior art keywords
- casing
- pile foundation
- displacement guide
- bearing plate
- static load
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- Expired - Lifetime
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Abstract
The utility model relates to a film type load box for pile foundation static load tests, which can be used for completely eliminating hydraulic oil in load boxes and has the advantages of big compression area, small rated pressure, no deformation of base plates of load boxes and safe use. The utility model is characterized in that thin plate film 1, a bearing plate 8 and a concrete underlayer 9 are orderly arranged in a box body 2 from bottom to top; at least two displacement guide rods 4 are evenly arranged on the circumference of the top surface of the box body 2, and displacement guide pipe bushings 5 are sheathed on the displacement guide rods 4; the middle parts of the bearing plate 8 and the concrete underlayer 9 are provided with an oil inlet pipe 7 and an oil outlet pipe 6 which are is communicated with the inside of the box body 2. The utility model ensures that test piles are used as project piles to be safer.
Description
Technical field
The utility model relates to the building operations experimental rig, promptly pre-buried load box.
Background technology
The load box that pre-buried load box method static load of pile foundation lotus test is adopted generally is to adopt the source of hydraulic jack as trial load, oil pressure is generally 40～60MPa in the jack, pressure is big and load concentrated, easily cause the distortion of test base plate, thereby have influence on the precision and the reliability of test, and, because jack is in the high pressure sealing state, residual hydraulic oil can't be discharged in the jack, if test pile uses as engineering piles, exists very big potential safety hazard, simultaneously, as disposable equipment, the expense costliness is unfavorable for promoting the use of of new technology.
Summary of the invention
The purpose of this utility model is: provide that a kind of compression area is big, rated pressure is little, load box is not yielding, test accuracy height, use the safer membrane type load box that is used for the test of static load of pile foundation lotus.
The technical pattern scheme that realizes the utility model purpose is as follows:
Be used for the membrane type load box of static load of pile foundation lotus test, it is characterized in that: comprise the casing 2 of end face opening, be provided with thin plate film 1, bearing plate 8 and concrete bed course 9 in the casing 2 from the bottom to top successively; Uniform at least two displacement guide rods 4 are arranged with displacement catheter cannula 5 on the displacement guide rod 4 around casing 2 end faces; Bearing plate 8 and concrete bed course 9 middle parts be provided with casing 2 in oil inlet pipe 7, the one side periphery places that communicate be provided with casing 2 in the flowline 6 that communicates.
According to the above-mentioned 1 described membrane type load box that is used for the test of static load of pile foundation lotus, it is characterized in that: described thin plate film 1 is the steel sheet of fold shape, and its edge is fixedly connected on the bearing plate 8.
According to the above-mentioned 1 described membrane type load box that is used for static load of pile foundation lotus test, it is characterized in that: uniform four displacement guide rods 4 around described casing 2 end faces are arranged with displacement catheter cannula 5 on the displacement guide rod 4.
According to the above-mentioned 1 described membrane type load box that is used for static load of pile foundation lotus test, it is characterized in that: described bearing plate 8 be provided with casing 2 in communicate, the oil inlet pipe 7 and the flowline 6 of oil circuit capable of circulation.
Useful technique effect of the present utility model is embodied in following several aspect:
1, the utility model is the experimental rig that is different from the traditional load case fully, owing to adopt the steel sheet membrane structure, under the same load, rated pressure only is about the 1/4-1/6 of conventional load box, less demanding to the experimental rig strength of materials and distortion.
2, the utility model adopts the recycle oil pressing system, can easily the hydraulic oil in the load box be got rid of clean, and be replaced as high-intensity cement slurry, and solved the difficult problem that conventional load box can't be got rid of hydraulic oil fully, guaranteed the safe handling of test pile as engineering piles.
3, the utility model compression area is big, and rated pressure is little, and the load box base plate is not yielding, has improved the accuracy of test.
4, the utility model does not adopt the strict jack of material as pressure apparatus, and the load box whole cost is declined to a great extent, and helps applying of new technology.
5, the not enough 200mm of the utility model height is 1/3 of a conventional load box, and light practicality helps the execute-in-place of static loading test.
Description of drawings
Fig. 1 is the utility model structural representation,
Fig. 2 is the vertical view of Fig. 1,
Fig. 3 is a membrane type load box schematic diagram under the duty.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment:
Be used for the membrane type load box that the static load of pile foundation lotus is tested, comprise the casing 2 of end face opening, casing 2 is discoid, and its lateral surface is the rounding conical surface.Thin plate film 1, bearing plate 8 and concrete bed course 9 are housed in the casing 2 from the bottom to top successively; Thin plate film 1 is the steel sheet of fold shape, and its edge is bolted to connection on bearing plate 8.Uniform four displacement guide rods 4 can move down with casing 2 around casing 2 end faces, are set with displacement catheter cannula 5 on the displacement guide rod 4, do not move with casing.Bearing plate 8 and concrete bed course 9 middle parts be installed with casing 2 in oil inlet pipe 7, the one side periphery places that communicate be installed with casing 2 in the flowline 6 that communicates.See Fig. 1, Fig. 2.
During work, fuel-displaced 6 close, and oil inlet pipe 7 is opened, and can pressurize to load box, after the off-test, flowline 6 and oil inlet pipe 7 are all opened, and inject high-intensity cement slurry from the oil-feed mouth of pipe 7, can replace the residual hydraulic oil in the membrane chamber fully.
Fig. 3 is the membrane type load box master sectional view under the duty, during work, pressurize in the film chamber by oil inlet pipe 7, the thin plate film 1 of fold is along with the increase of pressure is opened gradually, thereby load casing 2 is produced downward thrust, bearing plate 8 and concrete bed course 9 is separated with the load casing, and displacement guide rod 4 moves down with casing, places the measurement mechanism on the displacement guide rod can measure the downward displacement of casing by ground.
Claims (4)
1, is used for the membrane type load box of static load of pile foundation lotus test, it is characterized in that: comprise the casing (2) of end face opening, be provided with thin plate film (1), bearing plate (8) and concrete bed course (9) in the casing (2) from the bottom to top successively; Uniform at least two displacement guide rods (4) are arranged with displacement catheter cannula (5) on the displacement guide rod (4) around casing (2) end face; Bearing plate (8) and concrete bed course (9) middle part be provided with casing (2) in the oil inlet pipe (7) that communicates, a side periphery place be provided with casing 2 in the flowline (6) that communicates.
2, the membrane type load box that is used for the test of static load of pile foundation lotus according to claim 1, it is characterized in that: described thin plate film (1) is the steel sheet of fold shape, its edge is fixedly connected on the bearing plate (8).
3, the membrane type load box that is used for static load of pile foundation lotus test according to claim 1 is characterized in that: uniform four displacement guide rods (4) around described casing (2) end face are arranged with displacement catheter cannula (5) on the displacement guide rod (4).
4, the membrane type load box that is used for static load of pile foundation lotus test according to claim 1 is characterized in that: described bearing plate (8) be provided with casing (2) in communicate, the oil inlet pipe (7) and the flowline (6) of oil circuit capable of circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520069765 CN2769356Y (en) | 2005-03-11 | 2005-03-11 | Film type loading box for pile foundation static load test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520069765 CN2769356Y (en) | 2005-03-11 | 2005-03-11 | Film type loading box for pile foundation static load test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2769356Y true CN2769356Y (en) | 2006-04-05 |
Family
ID=36690435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520069765 Expired - Lifetime CN2769356Y (en) | 2005-03-11 | 2005-03-11 | Film type loading box for pile foundation static load test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2769356Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422517A (en) * | 2013-08-23 | 2013-12-04 | 南昌永祺科技发展有限公司 | Stacked pile body self-counter-force balance load box |
| CN103541338A (en) * | 2012-07-17 | 2014-01-29 | 许年春 | Soil mass test flexible bearing plate |
| CN105971036A (en) * | 2016-06-30 | 2016-09-28 | 中国矿业大学(北京) | Liquefied foundation model test device and method |
| CN106013274A (en) * | 2016-07-06 | 2016-10-12 | 东南大学 | Pile foundation horizontal load comprehensive simulation test device for deep foundation pit excavation unloading field |
| CN108532654A (en) * | 2018-06-15 | 2018-09-14 | 江苏省建筑工程质量检测中心有限公司 | Static load crawler-type mobile heap carrying platform and plate method |
-
2005
- 2005-03-11 CN CN 200520069765 patent/CN2769356Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541338A (en) * | 2012-07-17 | 2014-01-29 | 许年春 | Soil mass test flexible bearing plate |
| CN103422517A (en) * | 2013-08-23 | 2013-12-04 | 南昌永祺科技发展有限公司 | Stacked pile body self-counter-force balance load box |
| CN103422517B (en) * | 2013-08-23 | 2016-02-10 | 南昌永祺科技发展有限公司 | Superposing type pile body self-rebound force balance loading case |
| CN105971036A (en) * | 2016-06-30 | 2016-09-28 | 中国矿业大学(北京) | Liquefied foundation model test device and method |
| CN106013274A (en) * | 2016-07-06 | 2016-10-12 | 东南大学 | Pile foundation horizontal load comprehensive simulation test device for deep foundation pit excavation unloading field |
| CN108532654A (en) * | 2018-06-15 | 2018-09-14 | 江苏省建筑工程质量检测中心有限公司 | Static load crawler-type mobile heap carrying platform and plate method |
| CN108532654B (en) * | 2018-06-15 | 2023-09-15 | 江苏省建筑工程质量检测中心有限公司 | Crawler-type movable stacking platform for static load and flat plate load test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Anhui Geotechnial Nvesttgahon & Architectural Design Institute Assignor: Ma Jinlong Contract record no.: 2010340000039 Denomination of utility model: Film type loading box for pile foundation static load test Granted publication date: 20060405 License type: Exclusive License Record date: 20100408 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150311 Granted publication date: 20060405 |