CN202175963U - Self-balancing type foundation load test device - Google Patents
Self-balancing type foundation load test device Download PDFInfo
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- CN202175963U CN202175963U CN2011202633142U CN201120263314U CN202175963U CN 202175963 U CN202175963 U CN 202175963U CN 2011202633142 U CN2011202633142 U CN 2011202633142U CN 201120263314 U CN201120263314 U CN 201120263314U CN 202175963 U CN202175963 U CN 202175963U
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- counter
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- force anchor
- jack
- dowel bar
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to a self-balancing type foundation load test device, comprising a counter-force system, a force transferring system and a test system, wherein the counter-force system comprises a counter-force system, a counter-force anchor rod and a counter-force anchor blade; the force transferring system comprises a jack and a force transferring rod; the test system comprises a stress meter, a dial indicator and a spiral test board; the upper end of the counter-force anchor rod is clamped in the counter-force frame; the counter-force anchor rod is externally provided with the counter-force anchor blade, the force transferring rod with the length of two ends being more than that of the counter-force anchor rod is penetrated in the counter-force anchor rod; the lower end of the force transferring rod is externally provided with the spiral test board; the upper end surface of the force transferring rod is connected with the jack; the upper part of the jack is provided with the stress meter; the upper end of the stress meter abuts against a top board in the counter-force frame; and the dial indicator is placed at the top part of the force transferring rod by a measuring bracket. By utilization of the self-balancing type foundation load test device, multiple load tests with different depths can be carried out in the same plane, the structure is simple and convenient, and the working efficiency is high. In the self-balancing type foundation load test device, the self-balancing counter-force system is adopted, the expense is reduced or completely saved, the weight is light and the carry is convenient.
Description
Technical field
The utility model relates to a kind of geotechnical engineering load test device, especially a kind of self-balancing type foundation loading test device.
Background technology
Foundation loading test is test foundation strength and the most basic test of deformation parameter, also is one of test that must employing during for the appraisal of foundation that carries out important building.
" Code for investigation of geotechnical engineering " (GB50021-2001) related content of version the 102nd joint in 2009 is carried out in existing load test technical requirements.Load test mainly comprises shallow-layer plate, deep layer plate and screw plate test; More than three kinds of tests be applicable to different foundation soils and groundwater condition; Common characteristic must provide counter-force in the outside when being test, adopts earth anchor or top accumulation load method etc.This type of test is very loaded down with trivial details, and expense is high, long in time limit, and has a lot of uncertain potential safety hazards, and it is complicated to test employed device construction, complicated operation, and efficient is low, and experimental data is inaccurate, and expense is high, shortcomings such as poor stability.
The utility model content
The purpose of the utility model is for overcoming the deficiency of above-mentioned prior art, and a kind of simple structure, easy to operate, test efficiency is high, experimental data is accurate, expense is low, safe self-balancing type foundation loading test device are provided.
For realizing above-mentioned purpose, the utility model adopts following technical proposals:
A kind of self-balancing type foundation loading test device comprises counter force system, actuating system and test macro, and counter force system comprises reaction frame, counter-force anchor pole and counter-force anchor blade; Actuating system comprises jack, dowel bar; Test macro comprises stressometer, dial gage and spin test plate; Counter-force anchor pole upper end is stuck in the reaction frame; Counter-force anchor pole outside is provided with counter-force anchor blade; Be installed with two ends length in the counter-force anchor pole and exceed the dowel bar of counter-force anchor pole, the outside, lower end of dowel bar is provided with the spin test plate, and the dowel bar upper surface links to each other with jack; The top of jack is provided with stressometer, and the upper end of stressometer withstands on the reaction frame inner top; Dial gage is placed on the dowel bar top through measurement bracket.
Said reaction frame is square cage construction or triangle beveled structure.
Said reaction frame links to each other with counter-force anchor pole upper end through snap close.In the utility model, push up on the reaction frame upper end of stressometer, and the lower end keeps flat the end face of jack.The major function of stressometer is measured exerting oneself of jack.
Reaction frame is delivered to the climbing power that jack produces on the counter-force anchor pole, and restriction jack, stressometer produce vertical displacement upwards.It is shaped as square cage construction or triangle beveled structure.The reaction frame lower end is connected with the counter-force anchor pole with snap close.
Jack pressurizes according to test requirements document.The upper end links to each other with stressometer, and the lower end keeps flat the dowel bar upper end.
Counter-force anchor blade screws in counter-force anchor pole and counter-force anchor blade in the soil layer through rig before the test, and counter-force anchor blade and the welding of counter-force anchor pole provide downward counter-force at the trial.
Dowel bar is delivered to the downforce that jack produces on the spin test plate.
The counter-force anchor pole is a tubular structure, and dowel bar passes through between wherein.The counter-force that produces counter-force anchor blade is delivered on the reaction frame, and through reaction frame, stressometer, jack, dowel bar counter-force is delivered on the spin test plate, provides test required counter-force.
The spin test plate is welded on the dowel bar, and when dowel bar received downward pressure, the spin test plate produced certain displacement, measured the engineering properties of soil layer according to pressure-displacement relation.
The displacement that the spin test plate produced when dial gage was measured the downforce that produces at jack.
The utility model operating principle is following:
At first utilize existing general drilling equipment, pierce the specific depth in the soil layer to the mode of counter-force anchor pole, counter-force anchor blade and dowel bar, spin test plate utilization rotation simultaneously.The area of spin test plate is decided according to soil layer property.
Assemble a whole set of testing equipment by test requirements document then, exert pressure through jack, owing to receive the constraint of reaction frame, jack, stressometer etc. can not produce to top offset.The pressure that jack produces downwards is delivered on the spin test plate through dowel bar, and the spin test plate produces downward displacement gradually, and its displacement is measured by dial gage.Off-test when displacement reaches certain numerical value.Remove reaction frame this moment, connect the dowel bar of certain-length in the dowel bar upper end again, another test degree of depth that enters into soil layer with rig rotation dowel bar and spin test plate downwards makes an experiment.Mode can be carried out the repeatedly load test of the different tests degree of depth in same plane testing position according to this.
After the off-test, through rig counter-rotating each section dowel bar is proposed successively after, counter-force anchor pole, counter-force anchor blade and dowel bar, spin test plate are rotated from soil layer simultaneously propose simultaneously.
Self-balancing type foundation loading test device characteristic
Utilize this device to carry out foundation loading test, can carry out the repeatedly load test of different depth in same plan-position, and simple in structure, convenient, high efficiency.Main feature is following:
1, simple in structure, easy to operate: this pilot system mainly comprises counter force system, pilot system, and the test apparatus building service design is compact, easy to operate, and in light weight, easy carrying.
2, test efficiency is high: owing to adopt the self-balancing counter force system at the trial, do not need the outside to provide counter-force or manual work to carry out preloading, greatly shortened the test duration.Utilize this pilot system can carry out the load test of different depth continuously, greatly improved operating efficiency, shortened the duration in same place.When being rotated down counter-force anchor and spin test plate, adopt rig to rotate, test speed is fast.
3, experimental data is accurate: because there is the vertical constraints effect of counter-force anchor pole in top, dowel bar has guaranteed test accuracy remaining vertically in the precession process downwards.Avoid because the displacement error of the inclination of dowel bar, crooked generation.When precession spin test plate, adopt rig at the uniform velocity, steadily creep into, reduced disturbance, improved the accuracy of test bottom test soil layer.
4, expense is low: the connection between the dowel bar adopts screw thread to combine inserting lock device, and inversion mode capable of using reclaimed the spin test plate after Total Test was accomplished, and can repeatedly utilize, and had saved cost of equipment.
The utility model does not need the outside to provide counter-force or manual work to carry out preloading owing to adopt the self-balancing counter force system at the trial, reduces or has saved the main disbursement in original load test mode fully.
Because this experimental rig is in light weight, be convenient to carrying, can a saving equipment turnover expense and the removal charge of each testing site of intersite.
Description of drawings
Fig. 1 is the utility model embodiment 1 structural representation;
Fig. 2 is the utility model embodiment 2 structural representations;
Wherein 1. stressometers, 2. reaction frame, 3. jack, 4. counter-force anchor blade, 5. dowel bar, 6. counter-force anchor pole, 7. spin test plate, 8. dial gage, 9. ground.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Embodiment 1:
As shown in Figure 1, a kind of self-balancing type foundation loading test device comprises counter force system, actuating system and test macro, and counter force system comprises reaction frame 2, counter-force anchor pole 6 and the counter-force anchor blade 4 of square cage construction; Actuating system comprises jack 3, dowel bar 5; Test macro comprises stressometer 1, dial gage 8 and spin test plate 7; Counter-force anchor pole 6 upper ends are stuck in the reaction frame 2; Counter-force anchor pole 6 outsides are provided with counter-force anchor blade 4; Be installed with the length two ends in the counter-force anchor pole 6 and exceed the dowel bar 5 of counter-force anchor pole 6, the outside, lower end of dowel bar 5 is provided with spin test plate 7, and dowel bar 5 upper surfaces link to each other with jack 3; The top of jack 3 is provided with stressometer 1, and the upper end of stressometer 1 withstands on reaction frame 2 inner top; Dial gage 8 is placed on dowel bar 5 tops through measurement bracket.
In the utility model, push up on the reaction frame 2 upper end of stressometer 1, and the lower end keeps flat the end face of jack 3.The major function of stressometer 1 is measured exerting oneself of jack 3, and is delivered to counter-force on the jack 3 from reaction frame 2.
Jack 3 is exerted pressure according to test requirements document.The upper end links to each other with stressometer 1, and the lower end keeps flat dowel bar 5 upper ends.
Counter-force anchor blade 4 screws in counter-force anchor pole 4 and counter-force anchor blade 4 in the soil layer through rig before the test, and counter-force anchor blade 4 and 6 welding of counter-force anchor pole provide downward counter-force at the trial.
Dowel bar 5 is delivered to the downforce that jack 3 produces on the spin test plate 7.
Counter-force anchor pole 6 is a tubular structure, and dowel bar 5 passes through between wherein.The counter-force that produces counter-force anchor blade 4 is delivered on the reaction frame 2, and through reaction frame 2, stressometer 1, jack 3, dowel bar 5 counter-force is delivered on the spin test plate 7, provides test required counter-force.
The displacement that spin test plate 7 produced when dial gage 8 was measured the downforce that produces at jack 3.
The utility model operating principle is following:
At first utilize existing general drilling equipment, counter-force anchor blade 4, counter-force anchor pole 6 and dowel bar 5, spin test plate 7 utilize the mode of rotation to pierce the specific depth in the soil layer of ground below 9 simultaneously.The area of spin test plate 7 is decided according to soil layer property.
Assemble a whole set of testing equipment by test requirements document then, exert pressure through jack 3, owing to receive the constraint of reaction frame 2, jack 3, stressometer 1 etc. can not produce to top offset.The pressure that jack 3 produces downwards is delivered on the spin test plate 7 through dowel bar 5, and spin test plate 7 produces downward displacement gradually, and its displacement is measured by dial gage 8.Off-test when displacement reaches certain numerical value.Remove reaction frame 2 this moment, connects the dowel bar 5 of certain-length again in dowel bar 5 upper ends, and another test degree of depth that enters into soil layer with rig rotation dowel bar 5 and spin test plate 7 downwards makes an experiment.Mode can be carried out the repeatedly load test of the different tests degree of depth in same plane testing position according to this.
After the off-test, through rig counter-rotating each section dowel bar 5 is proposed successively after, counter-force anchor blade 4, counter-force anchor pole 6 and dowel bar 5, spin test plate 7 are rotated from soil layer simultaneously propose simultaneously.
Embodiment 2:
As shown in Figure 2, a kind of self-balancing type foundation loading test device comprises counter force system, actuating system and test macro, and counter force system comprises reaction frame 2, counter-force anchor pole 6 and the counter-force anchor blade 4 of triangle beveled structure; Actuating system comprises jack 3, dowel bar 5; Test macro comprises stressometer 1, dial gage 8 and spin test plate 7; Counter-force anchor pole 6 upper ends are stuck in the reaction frame 2; Counter-force anchor pole 6 outsides are provided with counter-force anchor blade 4; Be installed with the length two ends in the counter-force anchor pole 6 and exceed the dowel bar 5 of counter-force anchor pole 6, the outside, lower end of dowel bar 5 is provided with spin test plate 7, and dowel bar 5 upper surfaces link to each other with jack 3; The top of jack 3 is provided with stressometer 1, and the upper end of stressometer 1 withstands on reaction frame 2 inner top; Dial gage 8 is placed on dowel bar 5 tops through measurement bracket.
In the utility model, push up on the reaction frame 2 upper end of stressometer 1, and the lower end keeps flat the end face of jack 3.The major function of stressometer 1 is measured exerting oneself of jack 3.
Jack 3 is exerted pressure according to test requirements document.The upper end links to each other with stressometer 1, and the lower end keeps flat dowel bar 5 upper ends.
The displacement that spin test plate 7 produced when dial gage 8 was measured the downforce that produces at jack 3.
The utility model operating principle is following:
At first utilize existing general drilling equipment, utilize counter-force anchor blade 4, counter-force anchor pole 6 and dowel bar 5, spin test plate 7 mode of rotation to pierce the specific depth in the 9 following soil layers of ground simultaneously.The area of spin test plate 7 is decided according to soil layer property.
Assemble a whole set of testing equipment by test requirements document then, exert pressure through jack 3, owing to receive the constraint of reaction frame 2, jack 3, stressometer 1 etc. can not produce to top offset.The pressure that jack 3 produces downwards is delivered on the spin test plate 7 through dowel bar 5, and spin test plate 7 produces downward displacement gradually, and its displacement is measured by dial gage 8.Off-test when displacement reaches certain numerical value.Remove reaction frame 2 this moment, connects the dowel bar 5 of certain-length again in dowel bar 5 upper ends, and another test degree of depth that enters into soil layer with rig rotation dowel bar 5 and spin test plate 7 downwards makes an experiment.Mode can be carried out the repeatedly load test of the different tests degree of depth in same plane testing position according to this.
After the off-test, through rig counter-rotating each section dowel bar 5 is proposed successively after, counter-force anchor blade 4, counter-force anchor pole 6 and dowel bar 5, spin test plate 7 are rotated from soil layer simultaneously propose simultaneously.
Claims (3)
1. a self-balancing type foundation loading test device is characterized in that, comprises counter force system, actuating system and test macro, and counter force system comprises reaction frame, counter-force anchor pole and counter-force anchor blade; Actuating system comprises jack, dowel bar; Test macro comprises stressometer, dial gage and spin test plate; Counter-force anchor pole upper end is stuck in the reaction frame; Counter-force anchor pole outside is provided with counter-force anchor blade; Be installed with two ends length in the counter-force anchor pole and exceed the dowel bar of counter-force anchor pole, the outside, lower end of dowel bar is provided with the spin test plate, and the dowel bar upper surface links to each other with jack; The top of jack is provided with stressometer, and the upper end of stressometer withstands on the reaction frame inner top; Dial gage is placed on the dowel bar top through measurement bracket.
2. self-balancing type foundation loading test device according to claim 1 is characterized in that, said reaction frame is square cage construction or triangle beveled structure.
3. self-balancing type foundation loading test device according to claim 2 is characterized in that, said reaction frame links to each other with counter-force anchor pole upper end through snap close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202633142U CN202175963U (en) | 2011-07-25 | 2011-07-25 | Self-balancing type foundation load test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202633142U CN202175963U (en) | 2011-07-25 | 2011-07-25 | Self-balancing type foundation load test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202175963U true CN202175963U (en) | 2012-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202633142U Withdrawn - After Issue CN202175963U (en) | 2011-07-25 | 2011-07-25 | Self-balancing type foundation load test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202175963U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322052A (en) * | 2011-07-25 | 2012-01-18 | 山东电力工程咨询院有限公司 | Self-balancing foundation load test device |
-
2011
- 2011-07-25 CN CN2011202633142U patent/CN202175963U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322052A (en) * | 2011-07-25 | 2012-01-18 | 山东电力工程咨询院有限公司 | Self-balancing foundation load test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120328 Effective date of abandoning: 20130529 |
|
| RGAV | Abandon patent right to avoid regrant |