CN113155472A - Test soil tank for comprehensive test of operation performance of road roller - Google Patents
Test soil tank for comprehensive test of operation performance of road roller Download PDFInfo
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- CN113155472A CN113155472A CN202110276149.2A CN202110276149A CN113155472A CN 113155472 A CN113155472 A CN 113155472A CN 202110276149 A CN202110276149 A CN 202110276149A CN 113155472 A CN113155472 A CN 113155472A
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- road roller
- area
- test area
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- 238000012360 testing method Methods 0.000 title claims abstract description 124
- 239000002689 soil Substances 0.000 title claims abstract description 75
- 239000004575 stone Substances 0.000 claims abstract description 24
- 238000002955 isolation Methods 0.000 claims abstract description 14
- 239000004576 sand Substances 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 8
- 239000000463 material Substances 0.000 abstract description 22
- 238000005056 compaction Methods 0.000 abstract description 18
- 235000008331 Pinus X rigitaeda Nutrition 0.000 abstract 1
- 235000011613 Pinus brutia Nutrition 0.000 abstract 1
- 241000018646 Pinus brutia Species 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229920002209 Crumb rubber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
Abstract
The invention discloses a test soil tank for comprehensive test of the operation performance of a road roller, which comprises a foundation; three sections of test areas are arranged on the foundation, and an isolation area is arranged in the middle of each section of test area; the three test areas are a sand test area, a graded broken stone test area and a graded soil test area respectively, wherein sand is paved in the sand test area, graded broken stones are paved in the graded broken stone test area, and graded soil is paved in the graded soil test area. Through laying three kinds of different road bed compaction materials on the ground, the isolation region can block the compaction effort between different materials, prevents the intermixing between the different compaction materials when the pine turns over to comparability, repeatability and the authenticity of road roller test in experimental soil box have been ensured.
Description
Technical Field
The invention belongs to the field of testing of the working performance of a road roller, and relates to a test soil tank for comprehensively testing the working performance of the road roller.
Background
The road roller is widely applied to construction tasks of traffic infrastructures such as roads, railways and airports, the compaction capacity and the compaction efficiency of the road roller determine the speed of construction progress and the quality of engineering quality, and the road roller is an important link for improving the durability of the traffic infrastructures. The method mainly comprises a construction field test and a test soil tank test. Because the construction site test needs to arrange a test site in the construction process, the cost is high, the operation is inconvenient, the characteristics of compacted materials of the construction roadbed and the road surface are limited, the comprehensive test of the operation performance of the road roller cannot be carried out, and in addition, the interference of various random factors causes the test process to have larger contingency, and the result repeatability and comparability are often poor. Therefore, the test by using the test soil tank is a more feasible road roller operation performance test method with lower cost.
At present, when the existing test soil tank is used for testing, a roadbed pavement compaction medium material is laid in the soil tank, so that compaction result comparison tests of road rollers of different models are facilitated, and comparability of the tests is guaranteed; and the soil tank can be used repeatedly in a longer time, the physical and mechanical properties of the soil tank are basically kept unchanged, repeated tests are facilitated, and the authenticity of the tests is ensured. However, the conventional test soil tank has the following problems: in different roadbed and road surface compaction tasks, the compaction medium materials are different in composition, and the working performance of a certain type of road roller on different compaction materials is difficult to compare by using a test soil tank only paved with one compaction material. If the comprehensive operation performance of the road roller under different compaction materials is tested, the soil tank is required to be loosened and other compaction materials are required to be replaced, which wastes time and labor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a test soil tank for comprehensive test of the operation performance of a road roller, which can test the comprehensive operation performance of the road roller under different roadbed compacted materials at one time and ensure the comparability, repeatability and authenticity of the test of the road roller in the test soil tank.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a test soil tank for comprehensive test of the operation performance of a road roller comprises a foundation;
three sections of test areas are arranged on the foundation, and an isolation area is arranged in the middle of each section of test area; the three test areas are a sand test area, a graded broken stone test area and a graded soil test area respectively, wherein sand is paved in the sand test area, graded broken stones are paved in the graded broken stone test area, and graded soil is paved in the graded soil test area.
Preferably, the top of the isolation area is paved with a crushed rubber block.
Further, the thickness of the crumb rubber block is not less than 20 cm.
Preferably, the isolation zone is made of concrete.
Preferably, pebbles are laid below each test zone.
Furthermore, a water outlet is formed in each section of the test area of the foundation and communicated to the outside of the foundation.
Still further, the ground extends vertically upwards at its one end, and the extension is leveled with the test zone, and the extension is provided with vertical drainage well, and drainage well bottom and every delivery port intercommunication.
Further, the pebbles comprise an upper layer and a lower layer, wherein the upper layer is provided with small pebbles with the particle size of more than 3cm and less than 6cm, and the lower layer is provided with cobbles with the particle size of more than 7cm and less than 14 cm.
Furthermore, the paving density of the pebbles is 1.9-2.3 g/cm3。
Preferably, the sandy soil comprises particles with the particle size of more than 2mm and particles with the particle size of more than 0.075mm, the total mass of the particles with the particle size of more than 2mm is less than 50% of the total mass of the sandy soil, and the total mass of the particles with the particle size of more than 0.075mm is more than 50% of the total mass of the sandy soil.
Compared with the prior art, the invention has the following beneficial effects:
according to the soil tank, three different roadbed compacted materials are laid on the foundation, the compaction acting force can be blocked by the isolation area between the different materials, and the different compacted materials are prevented from being mixed with each other when the soil tank is loosened, so that the comparability, repeatability and authenticity of a road roller test in the soil tank are guaranteed.
Further, the broken rubber blocks can ensure the passing performance of the road roller in the soil tank, and the damage of key parts of the road roller caused by huge impact generated when the road roller passes through a partition wall is avoided.
Furthermore, the pebbles not only serve as a bearing layer, but also play a role of a permeable layer, so that redundant moisture in the compacted material is removed when the soil tank is loosened, and the water content of the compacted material is ensured to be close to the optimal water content.
Further, the water outlet can discharge the redundant water in the soil tank.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein: 1-sandy soil; 2-breaking the rubber blocks; 3-graded broken stone; 4-graded soil; 5-small pebbles; 6-cobble; 7-foundation; 8-a partition wall; 9-water outlet; 10-a drainage well.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, the test soil tank for comprehensive test of the working performance of the road roller comprises a foundation 7.
Three sections of test areas are arranged on the foundation 7, and an isolation area is arranged in the middle of each section of test area; the three test areas are a sand test area, a graded broken stone test area and a graded soil test area respectively, sand 1 is paved on the sand test area, graded broken stone 3 is paved on the graded broken stone test area, graded soil 4 is paved on the graded soil test area, and other common compaction materials can be paved on each test area.
The sandy soil 1 comprises particles with the particle size of more than 2mm and particles with the particle size of more than 0.075mm, the mass of the particles with the particle size of more than 2mm is less than 50 percent of the total mass of the sandy soil 1, and the mass of the particles with the particle size of more than 0.075mm is more than 50 percent of the total mass of the sandy soil 1.
The graded soil 4 is soil with different grain sizes and is combined and matched together according to the required proportion.
The graded broken stone 3 is a mixture of coarse, medium and small broken stone aggregates and stone chips which respectively account for the required proportion.
The isolation region adopts the concrete to make, and the rubble piece 2 has been laid at the isolation region top, and 20cm is no less than to rubble piece 2 thickness, and rubble piece 2 can ensure the trafficability characteristic of road roller in the soil box, produces huge impact when avoiding the road roller to pass through division wall 8, leads to the damage of road roller key part.
Pebbles are paved below each section of test area, each pebble comprises an upper layer and a lower layer, small pebbles 5 are arranged on the upper layer, large pebbles 6 are arranged on the lower layer, and the paving density of the pebbles is 1.9-2.3 g/cm3。
The foundation 7 is provided with a water outlet 9 at each section of test area, the foundation 7 vertically extends upwards at one end of the foundation 7, the extending part is flush with the test area, the extending part is provided with a vertical drainage well 10, and the bottom of the drainage well 10 is communicated with each water outlet 9.
The specific implementation process is as follows: big pebbles 6 are paved on the lower layer of the sandy soil test area, small pebbles 5 are paved on the middle layer, and sandy soil 1 is paved on the upper layer; large pebbles 6 are paved on the lower layer of the graded broken stone test area, small pebbles 5 are paved on the middle layer, and graded broken stones 3 are paved on the upper layer; large pebbles 6 are paved on the lower layer of the graded soil test area, small pebbles 5 are paved on the middle layer, and graded soil 4 is paved on the upper layer; the isolation area is composed of an isolation wall 8 made of concrete at the lower layer and a crushed rubber block 2 at the upper layer; the concrete foundation 7 is provided with a drain opening and a drain well 10.
And paving the cobbles 6 on the lower layer of each section of test area, firstly loosening, then vibrating and compacting to a certain compactness, and then paving the cobbles 5, wherein the thickness of the layer of the compacted cobbles 6 is not less than 60 cm.
The sandy soil 1, the graded broken stone 3 and the graded soil 4 are respectively paved on the upper layer of each section of test area, compaction is not needed, the materials are loosely paved on the upper layer, and the materials are used for the operation performance test of the road roller, and the thickness of the paving layer of the three materials is not less than 80 cm.
The length of the first section of test area is not less than 22m, wherein 6m is used for the transition distance from a shutdown state to a stable operation state of the road roller, 16m is used for a test area for testing the operation performance of the road roller in sandy soil 1, and the number of test points placed in the test area is not less than 5; the length of the second section of test area is not less than 16m, the test area is used for testing the operation performance of the road roller in the graded broken stone 3, and the number of the test points placed in the test area is not less than 5; the length of the third section of test area is not less than 22m, wherein 16m is used for a test area for testing the operation performance of the roller in the graded soil 4, the number of the test points is not less than 5, and 6m is used for the transition distance of the roller from the stable operation state to the shutdown state. Because the soil tanks are bilaterally symmetrical, the road roller can be started from any end, and the test result is not influenced.
The paving thickness of the rubber crumb block 2 is not less than 20cm, the rubber crumb block and the partition wall 8 block the acting force of the road roller from being transmitted among different materials, and the influence among the different materials at the edge is avoided.
The sandy soil 1 comprises particles with the particle size of more than 2mm and particles with the particle size of more than 0.075mm, the total mass of the particles with the particle size of more than 2mm is less than 50% of the total mass of the sandy soil 1, and the total mass of the particles with the particle size of more than 0.075mm is more than 50% of the total mass of the sandy soil 1; the graded broken stone 3 is a mixture of coarse, medium and small broken stone aggregates and stone chips which respectively account for the required proportion; the graded soil 4 is soil with different grain sizes and is combined and matched together according to the required proportion.
The cobble 6 is a cobble with the particle size of more than 7cm and less than 14 cm; the small pebbles 5 are pebbles with the particle size of more than 3cm and less than 6 cm.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. A test soil tank for comprehensive test of road roller operation performance is characterized by comprising a foundation (7);
three sections of test areas are arranged on the foundation (7), and an isolation area is arranged in the middle of each section of test area; the three test areas are a sand test area, a graded broken stone test area and a graded soil test area respectively, sand (1) is paved in the sand test area, graded broken stones (3) are paved in the graded broken stone test area, and graded soil (4) is paved in the graded soil test area.
2. The test soil tank for comprehensive testing of the working performance of the road roller as claimed in claim 1, wherein the top of the isolation area is paved with a crushed rubber block (2).
3. The test soil tank for comprehensive test of the working performance of the road roller as claimed in claim 2, wherein the thickness of the crushed rubber block (2) is not less than 20 cm.
4. The test soil tank for comprehensive testing of the working performance of the road roller as claimed in claim 1, wherein the isolation zone is made of concrete.
5. The test soil box for comprehensive test of the working performance of the road roller as claimed in claim 1, wherein pebbles are laid below each section of test area.
6. The test soil tank for comprehensive test of working performance of the road roller as claimed in claim 5, wherein the foundation (7) is provided with one water outlet (9) at each section of test area, and the water outlet (9) is communicated to the outside of the foundation (7).
7. Test soil tank for comprehensive testing of the working performance of road rollers according to claim 6, characterized in that the foundation (7) extends vertically upwards at one end thereof, the extension is flush with the test area, the extension is provided with vertical drainage wells (10), and the bottom of the drainage wells (10) is communicated with each water outlet (9).
8. The test soil tank for comprehensive test of the working performance of the road roller as claimed in claim 5, wherein the pebbles comprise an upper layer and a lower layer, the upper layer is provided with small cobbles (5) with the grain diameter of more than 3cm and less than 6cm, and the lower layer is provided with large pebbles (6) with the grain diameter of more than 7cm and less than 14 cm.
9. The test soil tank for comprehensive test of the working performance of the road roller as claimed in claim 5, wherein the laying density of pebbles is 1.9-2.3 g/cm3。
10. The test soil tank for comprehensive test of the working performance of the road roller as claimed in claim 1, wherein the sandy soil (1) comprises particles with the particle size of more than 2mm and particles with the particle size of more than 0.075mm, the total mass of the particles with the particle size of more than 2mm is less than 50% of the total mass of the sandy soil (1), and the total mass of the particles with the particle size of more than 0.075mm is more than 50% of the total mass of the sandy soil (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110276149.2A CN113155472A (en) | 2021-03-15 | 2021-03-15 | Test soil tank for comprehensive test of operation performance of road roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110276149.2A CN113155472A (en) | 2021-03-15 | 2021-03-15 | Test soil tank for comprehensive test of operation performance of road roller |
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| Publication Number | Publication Date |
|---|---|
| CN113155472A true CN113155472A (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110276149.2A Pending CN113155472A (en) | 2021-03-15 | 2021-03-15 | Test soil tank for comprehensive test of operation performance of road roller |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5911164A (en) * | 1998-02-10 | 1999-06-08 | Mcrae; John L. | Compaction and pavement design testing machine and method for testing flexible pavement materials |
| CN204989174U (en) * | 2015-08-05 | 2016-01-20 | 中国农业大学 | Be used for measuring soil compacting test platform |
| CN106771104A (en) * | 2017-01-16 | 2017-05-31 | 江苏中路工程技术研究院有限公司 | A kind of soil-aggregate subgrade compactness refers to object detection method |
| CN111562077A (en) * | 2020-07-14 | 2020-08-21 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | High-speed railway roadbed comprehensive test system and method |
-
2021
- 2021-03-15 CN CN202110276149.2A patent/CN113155472A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5911164A (en) * | 1998-02-10 | 1999-06-08 | Mcrae; John L. | Compaction and pavement design testing machine and method for testing flexible pavement materials |
| CN204989174U (en) * | 2015-08-05 | 2016-01-20 | 中国农业大学 | Be used for measuring soil compacting test platform |
| CN106771104A (en) * | 2017-01-16 | 2017-05-31 | 江苏中路工程技术研究院有限公司 | A kind of soil-aggregate subgrade compactness refers to object detection method |
| CN111562077A (en) * | 2020-07-14 | 2020-08-21 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | High-speed railway roadbed comprehensive test system and method |
Non-Patent Citations (1)
| Title |
|---|
| 周保刚: "压实试验的土槽设计及其应用", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅱ辑》, no. 3, 15 March 2015 (2015-03-15), pages 2 - 3 * |
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Application publication date: 20210723 |
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