CN201340369Y - Indoor test platform for roadbed soil mass resilience modulus - Google Patents
Indoor test platform for roadbed soil mass resilience modulus Download PDFInfo
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- CN201340369Y CN201340369Y CNU2009200318112U CN200920031811U CN201340369Y CN 201340369 Y CN201340369 Y CN 201340369Y CN U2009200318112 U CNU2009200318112 U CN U2009200318112U CN 200920031811 U CN200920031811 U CN 200920031811U CN 201340369 Y CN201340369 Y CN 201340369Y
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses an indoor test platform for roadbed soil mass resilience modulus, which comprises a modulus test casing with a top opening, a loading apparatus for uniformly loading the tested soil mass in the modulus test casing step by step, and a testing arrangement for respectively detecting the loading force and the deflection of the tested soil mass; the loading apparatus comprises a level bearing board placed on the upper portion of the modulus test casing and a reaction beam fixed overhead on the bearing board; the testing arrangement is mounted between the reaction beam and the bearing board; the testing arrangement comprises a force applying mechanism disposed on the bearing board, a force measuring mechanism mounted upon the force applying mechanism and a detecting mechanism mounted on the bearing board for detecting the deflection of the tested soil mass; the modulus test casing is a cylinder or cubical casing; and the modulus test casing, the bearing board and the force applying mechanism are arranged coaxially. The utility model achieves the advantages of simple reasonable structure, simple test method, easy operation and visual test result; and can be used in pavement structure design directly.
Description
Technical field
The utility model relates to a kind of soil body modulus of resilience proving installation, especially relates to a kind of subgrade soil rebound modulus indoor test platform.
Background technology
The soil body modulus of resilience is requisite parameter in the highway design, and the soil body modulus of resilience changes will influence Pavement Design thickness, thereby preferably the soil body modulus of resilience is directly tested when having ready conditions in the practice.
Nowadays, definite method of China's soil matrix modulus of resilience mainly contains following several: on-the-spot loading plate method, Beckman beam method, California bearing ratio (CBR) method, Falling Weight Deflectometer (FWD) method, look-up table and indoor small-sized loading plate method.Wherein, on-the-spot loading plate method, Beckman beam method, California bearing ratio (CBR) method and Falling Weight Deflectometer (FWD) method all are to test at the roadbed scene, thereby said method all need test after roadbed construction completion again, but pavement structure design should just not finished before roadbed is constructed.Therefore, test the soil matrix modulus of resilience that draws by said method and all be used for controlling construction quality, rather than be used in reference to the design of guide passage face.
In addition, indoor small-sized loading plate method, this method mainly is that the on-the-spot soil body of roadbed is under optimum moisture content after the compacting, use the soil matrix modulus of resilience method of testing that the lever instrument is tested, but this method at test specimen be the right cylinder test specimen of diameter 152mm and high 120mm, and the loading plate pressure head is that plectane and its diameter are 50mm.To sum up, the test mode of indoor small-sized loading plate method and on-the-spot test condition exist than big-difference, and test result can not be directly used in the pavement structure design.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of subgrade soil rebound modulus indoor test platform is provided, its simple and reasonable and method of testing is simple, it is easy and simple to handle to use, and test result is directly perceived and can be directly used in the pavement structure design.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of subgrade soil rebound modulus indoor test platform, it is characterized in that: comprise the die trial casing that is used for the tested soil body of splendid attire and upper opening, the tested soil body of die trial box house carried out the charger that evenly loads step by step, and described charger load and unloading after the proving installation that respectively loading force and tested soil deformation amount detected; Described charger comprises the level that is placed on die trial casing top to loading plate and be fixedly mounted on reaction beam directly over the loading plate, and described loading plate is the plectane that directly contacts with described tested soil body end face; Described proving installation is installed between reaction beam and the loading plate, and described proving installation comprises the testing agency of installing that the force application mechanism be placed on the loading plate, the force measuring machine that is installed in described force application mechanism top and level are installed on the loading plate and tested soil deformation amount being detected; Described die trial casing is right cylinder casing or square casing, all coaxial setting of described die trial casing, loading plate and described force application mechanism.
Described force application mechanism is a lifting jack, and described force measuring machine is the proving ring that is installed in directly over the lifting jack, and described proving ring is installed between lifting jack and the reaction beam by the steel plate of dribbling seat.
Described testing agency is a clock gauge.
Described clock gauge is installed in the column top that is positioned on the loading plate, and described column top is provided with the bearing that is used to install clock gauge.
The diameter of described loading plate is 30cm, and thickness is 2cm; The height of described square casing is that 1-1.5m and its length of side are not less than 90cm.
The quantity of described clock gauge is that two and two clock gauge symmetries are installed in described force application mechanism both sides.
Connect all coaxial setting of steel plate of described lifting jack, steel cylinder and dribbling seat between the steel plate of described lifting jack and dribbling seat by vertical steel cylinder.
Described die trial casing branch multilayer from bottom to up is provided with.
Described die trial casing is made by steel plate.
The diameter of described loading plate is 30cm, and thickness is 2cm; The height of described right cylinder casing is that 1-1.5m and its diameter are not less than 90cm.
The utility model compared with prior art has the following advantages: 1, simple and reasonable, processing and fabricating makes things convenient for and uses easy and simple to handle.2, method of testing is simple, and test result is directly perceived and can be directly used in the pavement structure design.To sum up, the utility model can simulated field subgrade soil duty, thereby the measured soil body modulus of resilience can be directly used in the design of pavement structure, can solve existing soil body modulus of resilience method of testing and the existing test effect of dependence test device directly perceived, can not simulated field subgrade soil duty and test result can not be directly used in practical problemss such as instructing the pavement structure design.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the utility model except that the die trial casing.
Fig. 2 is the structural representation of the utility model die trial casing.
Description of reference numerals:
The 1-lifting jack; 2-steel cylinder; The steel plate of 3-dribbling seat;
The 4-proving ring; The 5-reaction beam; The 6-clock gauge;
The 7-column; The 8-loading plate; 9-die trial casing.
Embodiment
As shown in Figure 1 and Figure 2, the utility model comprises the die trial casing 9 that is used for the tested soil body of splendid attire and upper opening, the die trial casing 9 inner tested soil bodys is carried out the charger that evenly loads step by step, and described charger load and unloading after the proving installation that respectively loading force and tested soil deformation amount detected.Described charger comprises that the level that is placed on die trial casing 9 tops is to loading plate 8 and be fixedly mounted on reaction beam 5 directly over the loading plate 8, described loading plate 8 is the plectane that directly contacts with described tested soil body end face, and the diameter of described loading plate 8 is 30cm, and thickness is 2cm.Described proving installation is installed between reaction beam 5 and the loading plate 8, and described proving installation comprises the testing agency of installing that the force application mechanism be placed on the loading plate 8, the force measuring machine that is installed in described force application mechanism top and level are installed on the loading plate 8 and tested soil deformation amount being detected; Described die trial casing 9 is right cylinder casing or square casing, all coaxial setting of described die trial casing 9, loading plate 8 and described force application mechanism.In the present embodiment, the square casing of described die trial casing 9 for making by steel plate, and the height of described square casing is that 1-1.5m and its length of side are not less than 90cm.In the practice, described die trial casing 9 also can be the right cylinder casing, and the height of described right cylinder casing is that 1-1.5m and its diameter are not less than 90cm.In addition, described die trial casing 9 branch multilayer from bottom to up is provided with, and in the present embodiment, die trial casing 9 evenly divides four layers from bottom to up and is provided with.That is to say, before the test, divide the four layers of die trial casing 9 of packing into from bottom to up, and the tested soil body should guarantee to have certain compactness when packing into the tested soil body.
In the present embodiment, described force application mechanism is a lifting jack 1, and described force measuring machine is the proving ring 4 that is installed in directly over the lifting jack 1, and described proving ring 4 is installed between lifting jack 1 and the reaction beam 5 by the steel plate 3 of dribbling seat.Connect all coaxial setting of steel plate 3 of described lifting jack 1, steel cylinder 2 and dribbling seat between the steel plate 3 of described lifting jack 1 and dribbling seat by vertical steel cylinder 2.Described testing agency is a clock gauge 6, and described clock gauge 6 is installed in column 7 tops that are positioned on the loading plate 8, and described column 7 tops are provided with the bearing that is used to install clock gauge 6.In the present embodiment, the quantity of described clock gauge 6 is that two and two clock gauge 6 symmetries are installed in described force application mechanism both sides.
Test process of the present utility model is: at first, will divide four layers of die trial casing 9 and carry out compacting according to the compactness of on-the-spot roadbed of packing at the tested soil body of uniform mixing under the optimum moisture content; Tested soil body upper surface in compacting is proofreaied and correct with surveyor's staff, settles loading plate 8 again, and makes loading plate 8 be in horizontality; On loading plate 8, lay lifting jack 1 afterwards, proving ring 4 is placed between lifting jack 1 and the reaction beam 5 again; Lay then on the bearing that 6, two clock gauges of clock gauge place column 7 tops on the loading plate 8 respectively, and, then enter concrete test process 6 pairs zero in clock gauge.Before concrete test, earlier carry out precompressed with 1 pair of tested soil body of lifting jack, be that soil matrix loads step by step and unloads by 1 pair of tested soil body of lifting jack afterwards, after each the loading and after downloading, all test by proving ring 4 and 1 applied pressure of 6 pairs of lifting jack of clock gauge and soil matrix deflection, last deal with data and analysis draw the pressure-deformation curve that the tested soil body is a soil matrix, determine the modulus of resilience of the tested soil body.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (10)
1. subgrade soil rebound modulus indoor test platform, it is characterized in that: comprise the die trial casing (9) that is used for the tested soil body of splendid attire and upper opening, the inner tested soil body of die trial casing (9) carried out the charger that evenly loads step by step, and described charger load and unloading after the proving installation that respectively loading force and tested soil deformation amount detected; Described charger comprises the level that is placed on die trial casing (9) top to loading plate (8) and be fixedly mounted on reaction beam (5) directly over the loading plate (8), and described loading plate (8) is the plectane that directly contacts with described tested soil body end face; Described proving installation is installed between reaction beam (5) and the loading plate (8), and described proving installation comprises the testing agency of installing that the force application mechanism be placed on the loading plate (8), the force measuring machine that is installed in described force application mechanism top and level are installed in that loading plate (8) is gone up and tested soil deformation amount being detected; Described die trial casing (9) is right cylinder casing or square casing, described die trial casing (9), loading plate (8) and all coaxial setting of described force application mechanism.
2. according to the described subgrade soil rebound modulus indoor test of claim 1 platform, it is characterized in that: described force application mechanism is lifting jack (1), described force measuring machine is for being installed in the proving ring (4) directly over the lifting jack (1), and described proving ring (4) is installed between lifting jack (1) and the reaction beam (5) by the steel plate (3) of dribbling.
3. according to claim 1 or 2 described subgrade soil rebound modulus indoor test platforms, it is characterized in that: described testing agency is clock gauge (6).
4. according to the described subgrade soil rebound modulus indoor test of claim 3 platform, it is characterized in that: described clock gauge (6) is installed in column (7) top that is positioned on the loading plate (8), and described column (7) top is provided with the bearing that is used to install clock gauge (6).
5. according to claim 1 or 2 described subgrade soil rebound modulus indoor test platforms, it is characterized in that: the diameter of described loading plate (8) is 30cm, and thickness is 2cm; The height of described square casing is that 1-1.5m and its length of side are not less than 90cm.
6. according to the described subgrade soil rebound modulus indoor test of claim 3 platform, it is characterized in that: the quantity of described clock gauge (6) is that two and two clock gauges (6) symmetry are installed in described force application mechanism both sides.
7. according to the described subgrade soil rebound modulus indoor test of claim 2 platform, it is characterized in that: connect all coaxial setting of steel plate (3) of described lifting jack (1), steel cylinder (2) and dribbling seat between the steel plate (3) of described lifting jack (1) and dribbling seat by vertical steel cylinder (2).
8. according to claim 1 or 2 described subgrade soil rebound modulus indoor test platforms, it is characterized in that: described die trial casing (9) branch multilayer from bottom to up is provided with.
9. according to claim 1 or 2 described subgrade soil rebound modulus indoor test platforms, it is characterized in that: described die trial casing (9) is made by steel plate.
10. according to claim 1 or 2 described subgrade soil rebound modulus indoor test platforms, it is characterized in that: the diameter of described loading plate (8) is 30cm, and thickness is 2cm; The height of described right cylinder casing is that 1-1.5m and its diameter are not less than 90cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200318112U CN201340369Y (en) | 2009-01-23 | 2009-01-23 | Indoor test platform for roadbed soil mass resilience modulus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200318112U CN201340369Y (en) | 2009-01-23 | 2009-01-23 | Indoor test platform for roadbed soil mass resilience modulus |
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| CN201340369Y true CN201340369Y (en) | 2009-11-04 |
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| CNU2009200318112U Expired - Fee Related CN201340369Y (en) | 2009-01-23 | 2009-01-23 | Indoor test platform for roadbed soil mass resilience modulus |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680340A (en) * | 2012-03-21 | 2012-09-19 | 重庆交通大学 | Indoor testing method for roadbed soil deformation modulus |
| CN102121882B (en) * | 2010-01-08 | 2012-09-19 | 宝山钢铁股份有限公司 | Device and method for measuring comprehensive rebound quantity of high-strength steel |
| CN103823043A (en) * | 2014-03-11 | 2014-05-28 | 北京交通大学 | Multifunctional model test box for frozen soil retaining wall |
| CN105891000A (en) * | 2016-03-31 | 2016-08-24 | 江苏省地质调查研究院 | Intelligent test device for soil body layering deformation monitoring, measurement calibration method and evaluation method |
| CN109826175A (en) * | 2019-01-17 | 2019-05-31 | 同济大学 | A kind of detection method of reinforced soil with geosynthetics filled soils |
| CN111474023A (en) * | 2020-04-07 | 2020-07-31 | 中铁十二局集团有限公司 | Unconfined compressive strength test piece manufacturing and demolding integrated machine |
| CN111965060A (en) * | 2020-08-03 | 2020-11-20 | 河海大学 | Press-in type on-site modulus of resilience measuring device |
| CN115290458A (en) * | 2022-04-22 | 2022-11-04 | 吉林建筑大学 | Device and method for testing lignin-modified powdery clay resilience modulus |
| CN116335105A (en) * | 2023-05-11 | 2023-06-27 | 烟台市交通运输服务中心(烟台市城市轨道交通建设服务中心、烟台市铁路建设服务中心) | Highway subgrade fixed-point compression pressure measuring device |
-
2009
- 2009-01-23 CN CNU2009200318112U patent/CN201340369Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121882B (en) * | 2010-01-08 | 2012-09-19 | 宝山钢铁股份有限公司 | Device and method for measuring comprehensive rebound quantity of high-strength steel |
| CN102680340A (en) * | 2012-03-21 | 2012-09-19 | 重庆交通大学 | Indoor testing method for roadbed soil deformation modulus |
| CN103823043A (en) * | 2014-03-11 | 2014-05-28 | 北京交通大学 | Multifunctional model test box for frozen soil retaining wall |
| CN103823043B (en) * | 2014-03-11 | 2016-01-20 | 北京交通大学 | A kind of Multifunctional Frozen retaining wall model test box |
| CN105891000A (en) * | 2016-03-31 | 2016-08-24 | 江苏省地质调查研究院 | Intelligent test device for soil body layering deformation monitoring, measurement calibration method and evaluation method |
| CN109826175A (en) * | 2019-01-17 | 2019-05-31 | 同济大学 | A kind of detection method of reinforced soil with geosynthetics filled soils |
| CN111474023A (en) * | 2020-04-07 | 2020-07-31 | 中铁十二局集团有限公司 | Unconfined compressive strength test piece manufacturing and demolding integrated machine |
| CN111965060A (en) * | 2020-08-03 | 2020-11-20 | 河海大学 | Press-in type on-site modulus of resilience measuring device |
| CN115290458A (en) * | 2022-04-22 | 2022-11-04 | 吉林建筑大学 | Device and method for testing lignin-modified powdery clay resilience modulus |
| CN116335105A (en) * | 2023-05-11 | 2023-06-27 | 烟台市交通运输服务中心(烟台市城市轨道交通建设服务中心、烟台市铁路建设服务中心) | Highway subgrade fixed-point compression pressure measuring device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20110123 |