CN203514291U - System for testing impact compacted road bed - Google Patents
System for testing impact compacted road bed Download PDFInfo
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- CN203514291U CN203514291U CN201320633260.3U CN201320633260U CN203514291U CN 203514291 U CN203514291 U CN 203514291U CN 201320633260 U CN201320633260 U CN 201320633260U CN 203514291 U CN203514291 U CN 203514291U
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 239000002689 soil Substances 0.000 claims abstract description 95
- 238000005056 compaction Methods 0.000 claims abstract description 74
- 238000005070 sampling Methods 0.000 claims abstract description 32
- 230000035939 shock Effects 0.000 claims description 37
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 17
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 3
- 238000004062 sedimentation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 28
- 238000010276 construction Methods 0.000 description 12
- 238000007596 consolidation process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 6
- 239000004576 sand Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a system for be used for test to strike compacted road bed. The system comprises: a pressure detection device configured to detect a bottom pressure of a soil body of the roadbed; a settlement gauge configured to detect a settlement amount of the soil body before and after impact compaction; a core sampling device configured to sample a core for soil detection; a core analysis device configured to analyze the core sampled by the core sampling device to obtain a degree of compaction; and a processing device configured to output a test result according to the detected bottom pressure, the amount of sedimentation, and the degree of compaction. By the technical scheme, the bottom pressure, the settlement amount and the compaction degree parameters of the roadbed soil body reflecting the soil body impact compaction effect can be comprehensively tested, so that the impact compaction effect can be comprehensively evaluated; the output test result can be used for assisting technicians to find the optimal impact compaction mode.
Description
Technical field
The utility model relates to traffic and transport field, particularly, relates to a kind of for testing the system of the roadbed of shock compaction.
Background technology
Roadbed refers to the banded structure thing as road bed of building according to route allocation and certain technical requirements, is the basis of railway and highway.Along with the continuous increase of economic development to volume of transport demand, railway and highway construction scale will further develop, and also the Subgrade Compaction Quality of railway and highway be had higher requirement simultaneously.Subgrade compaction is insufficient is the one of the main reasons that causes roadbed local subsidence or destroy too early, in the construction of existing railway and highway, because the not enough various early damages that cause of subgrade compaction are of common occurrence.Facts have proved, in the construction of railway and highway, adopting higher standard to carry out effective compacting to roadbed is increase roadbed supporting capacity and keep railway and a kind of most economical effective technical measures of highway resistance to overturning.Therefore, how to confirm roadbed whether Effective Compaction be that those skilled in the art want the urgent problem solving.
Judge at present roadbed whether the conventional method of Effective Compaction have degree of compaction detection and settlement monitoring.
Wherein, detection methods of compaction degree is mainly sand replacement method and core cutter method.Yet sand replacement method and core cutter method are only suitable for for detection of being compacted soil body top layer 30cm with interior degree of compaction.The consolidation effect wanting in the darker roadbed of test will carry out roadway excavation.In order the degree of compaction in the darker soil body to be detected, excavation area will be relatively large so.Just very large to the destruction of compacted fill like this, not only destroyed the soil body of compacting, and cost consumption is larger.
Settlement monitoring is also a kind of common determination methods, to controlling speed of application, predicting that post-construction settlement of subgrade is significant.Wherein, monitored data can be monitored the stability of ground in fill construction process on the one hand, thereby controls the speed of banketing; Can infer accordingly the Settlement Deformation Rules of ground on the other hand, control the settlement after construction of embankment.But settlement monitoring can only be tested the sedimentation of roadbed on the whole, the consolidation effect that each layer of reaction roadbed that can not be detailed bankets, is so also just difficult to meet the requirement higher to the Subgrade Compaction Quality of railway and highway.
Conventional degree of compaction detects the degree of compaction that can only test soil body surface position, for the degree of compaction of deep layer roadbed, is difficult to test.Settlement monitoring can only be done whole settling amount, can not describe the situation of inside soil body consolidation effect in detail.For the problems referred to above, in prior art, there is no good solution.
Utility model content
The purpose of this utility model is to provide a kind of system, the comprehensive test of carrying out that can be to the roadbed through compacting, thereby thoroughly evaluating consolidation effect.
To achieve these goals, it is a kind of for testing the system of the roadbed of shock compaction that the utility model provides, and this system comprises: pressure-detecting device, is configured to detect the base pressure of the soil body of described roadbed; Settlement gauge, is configured to detect the settling amount of the described soil body before and after shock compaction; Core boring sampling device, is configured to the brill core that sampling detects for the soil body; Bore core analytical equipment, be configured to analyze the brill core of described core boring sampling device sampling, to obtain degree of compaction; And treating apparatus, be configured to output test result according to detected base pressure, settling amount and described degree of compaction.
Alternatively, described pressure-detecting device is configured to detect the base pressure of highly different a plurality of soil bodys.
Alternatively, described pressure-detecting device comprises a plurality of pressure sensors and pressure sensor data collector, and wherein said a plurality of pressure sensors are arranged on the bottom of described a plurality of soil bodys; And described pressure sensor data collector is configured to gather the pressure data that described a plurality of pressure sensor obtains, and obtained pressure data is outputed to described treating apparatus.
Alternatively, described core boring sampling device is configured to take desired depth and samples as ladder.
Alternatively, the described soil body is highly different a plurality of soil bodys, and described core boring sampling device is configured to take desired depth and sample as ladder having the soil body of maximum height.
By technique scheme, can carry out full test to base pressure, settling amount and the degree of compaction parameter of the subgrade soil of reflection soil body shock compaction effect, thus thoroughly evaluating shock compaction effect; Utilize the test result of output can assist technician to find best shock compaction mode.
Other feature and advantage of the present utility model partly in detail are described the specific embodiment subsequently.
Accompanying drawing explanation
Accompanying drawing is to be used to provide further understanding of the present utility model, and forms a part for manual, is used from explanation the utility model, but does not form restriction of the present utility model with the specific embodiment one below.In the accompanying drawings:
Fig. 1 be according to the utility model embodiment for testing the system architecture diagram of the roadbed of shock compaction;
Fig. 2 be according to the utility model embodiment for testing the method flow diagram of the roadbed of shock compaction; And
Fig. 3 is the scene schematic diagram that can implement for testing the system and method for shock compaction roadbed according to the utility model embodiment.
Description of reference numerals
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.
In railway bed, the Subgrade of Heavy-haul Railway design thickness that bankets is larger.For example, railway DK62+810-DK81+964 section high fill thickness in accurate pond reaches 22.60m.In the construction of railways process of accurate pond, for improving subgrade rating, eliminate the settlement by soaking of loess, adopt impact road roller to carry out reinforcement compacting.Impact type compact technique, as a kind of novel compact technique, is the debulking methods that impact and kneading action combine, and has high efficiency and good consolidation effect, can improve roadbed quality.Yet, in currently available technology, the test of Roadbed Impulsive Compaction effect is not had to good method.The consolidation effect of railway bed is mainly controlled by degree of compaction, and reinforcement shock compaction Depth of filled soil is larger, in shock compaction process, and the effect of grasp shock compaction that can not be at any time.Therefore the utility model is proposed.
Fig. 1 be according to the utility model embodiment for testing the system architecture diagram of the roadbed of shock compaction.As shown in Figure 1, what in the utility model embodiment, provide is a kind of for testing the system 100 of the roadbed of shock compaction, comprising: pressure-detecting device 101, is configured to detect the base pressure of the soil body of described roadbed; Settlement gauge 102, is configured to detect the settling amount of the described soil body before and after shock compaction; Core boring sampling device 103, is configured to the brill core that sampling detects for the soil body; Bore core analytical equipment 104, be configured to analyze the brill core of described core boring sampling device sampling, to obtain degree of compaction; And treating apparatus 105, be configured to output test result according to detected base pressure, settling amount and described degree of compaction.
By technique scheme, can carry out full test to base pressure, settling amount and the degree of compaction parameter of the subgrade soil of reflection soil body shock compaction effect.
Wherein, pressure-detecting device 101 can detect the pressure that the corresponding degree of depth of the soil body is subject to, and by calculating or transformation energy, at an easy rate the ess-strain in soil is analyzed, thereby judged native shock compaction effect, and pressure-detecting device 101 can also be for the long term monitoring of roadbed.Utilize settlement gauge 102 to carry out settlement monitoring and can not only monitor sedimentation and the rate of settling in impact process, can also refer to lead the work progress parameters such as Roadbed Soil speed, the auxiliary constructure scheme of adjusting, avoids blindly construction, guarantee construction quality, guarantee the stability of roadbed.By core boring sampling device 103, carry out core boring sampling, then by boring the brill core of 104 pairs of samplings of core analytical equipment, analyze, can Direct Analysis obtain boring the degree of compaction of core soil sample; The brill core that utilization different depth from the soil body obtains, not only can at length analyze the compacting situation of the soil layer of each degree of depth, and few to the destruction of roadbed.
Therefore, by according to the utility model embodiment for testing the system of the roadbed of shock compaction, obtain base pressure, settling amount and the degree of compaction parameter of subgrade soil, can thoroughly evaluating shock compaction effect.By above-mentioned parameter through synthesis utilize treating apparatus 105 to output test result and can assist technician to find best shock compaction mode, can guiding construction process, Optimizing Construction Scheme.
In one embodiment, in order to fully understand the base pressure of the differing heights soil body, pressure-detecting device 101 can be configured to detect the base pressure of highly different a plurality of soil bodys.In an interchangeable embodiment, pressure-detecting device 101 can be configured to detect the pressure of different depth position in a soil body, this will describe in detail below.
In one embodiment, pressure-detecting device 101 can comprise a plurality of pressure sensors (for example, soil pressure sensor 1-5) and pressure sensor data collector (for example, soil pressure sensor numerical value Acquisition Instrument 18).Wherein, if according to the previous embodiment of describing in the preceding paragraph, described a plurality of pressure sensors can be arranged on the bottom of a plurality of soil bodys.A plurality of soil bodys can be the soil bodys of differing heights, such as 1m, 2m, 5m etc.; And described pressure sensor data collector can be configured to gather the pressure data that described a plurality of pressure sensor obtains, and obtained pressure data is outputed to described treating apparatus.Alternatively, if according to a rear embodiment of describing in the preceding paragraph, described a plurality of pressure sensors will be arranged on differing heights position in the same soil body.In rear a kind of embodiment, in the same soil body, different depth position (for example, 1m, 2m, 5m etc.) although being set, pressure sensor in realization, seems more complicated than the set-up mode in front a kind of embodiment, yet can realize, test external condition is consistent, the repeatable high and solution test occupation of land texts of test experiments.Set-up mode about pressure sensor will be described hereinafter.
In one embodiment, core boring sampling device 103 can be configured to for example, sample for ladder with desired depth (, 0.4m, 0.5m, 0.8m etc.).One preferred embodiment in, when the described soil body is highly different a plurality of soil body, core boring sampling device 103 can be configured to the soil body to thering is maximum height and for example, samples for ladder with desired depth (, 0.4m, 0.5m, 0.8m etc.).Like this, for example, in the situation that the shock compaction process that all soil bodys are carried out to same intensity (, the number of times that shock compaction is identical), by the maximum height soil body being carried out to ladder sampling, can indirectly obtain the brill core basis of same depth in all soil bodys, thereby obtain the degree of compaction corresponding with the degree of depth, simplified test process.
For treating apparatus 105, it should be noted that, the treating apparatus 105 using in the utility model embodiment can be any device with data processing function and/or input/output function, includes but not limited to CPU, single-chip microcomputer, integrated circuit and programmable logic controller etc.The data that treating apparatus 105 can be received through after arrangement with the formal output of tables of data.One preferred embodiment in, treating apparatus 105 has the interface that can for example, communicate with external equipment (, computer).
Below in conjunction with Fig. 2 to describing for testing the method for the roadbed of shock compaction according to the utility model embodiment.
Fig. 2 be according to the utility model embodiment for testing the method flow diagram of the roadbed of shock compaction.As shown in Figure 2, what the utility model provided is a kind of for testing the method for the roadbed of shock compaction, comprising: S200, detects the base pressure of the soil body of described roadbed; S202, the settling amount of the described soil body before and after detection shock compaction; S204, the brill core that sampling detects for the soil body; S206, analyzes described brill core and obtains degree of compaction; And S208, according to detected base pressure, settling amount and described degree of compaction, output test result.Technique scheme, can carry out full test to base pressure, settling amount and the degree of compaction parameter of the subgrade soil of reflection soil body shock compaction effect, thereby thoroughly evaluating shock compaction effect, and then can assist technician to find best shock compaction mode.In one embodiment, the base pressure of the soil body of the described roadbed of described detection comprises the base pressure of a plurality of soil bodys that detection is highly different.
In one embodiment, the step of base pressure that detects the soil body of described roadbed can comprise: before making roadbed in Wa Zhikeng hole, ground; In hole, described hole, pressure sensor is set; And build the road after base shock compaction on upper berth, described ground, gather the pressure data that described pressure sensor obtains.This embodiment is described in detail as follows.
Before making roadbed, carry out the processing of original ground.For pressure sensor is set, can dig hole, standard processed hole at original ground.For example, one of the system of can digging has the diameter of preassigned and the cylinder of degree of depth hole (for example, the cylinder hole of diameter 20cm, dark 15cm).Before pressure sensor is set, can hole in tile certain depth standard sand (for example, 5cm), pressure sensor is lain in above standard sand, and then (for example 5cm) standard sand that tiles on soil pressure sensor, then use evengranular loess (in this example, subgrade soil is loess) overburden pressure sensor.In order to make pressure sensor data collector can gather the data of pressure sensor, can cut a hole an elongated slot to roadbed sideline in the runway direction perpendicular to roadbed, the wiring of pressure sensor is embedded in elongated slot, and make wiring S-shaped embedding so that wiring length enough and to spare to be provided, even if guarantee, because making pressure sensor displacement, shock compaction also can guarantee that the normal connection of wiring is to gather pressure data.Then the roadbed (for example, the high loess subgrade of 1m) of normal making predetermined altitude on former ground.
The step of the brill core that in one embodiment, sampling detects for the soil body for example can comprise, with desired depth (, 0.4m, 0.5m, 0.8m etc.) and sampling for ladder.One preferred embodiment in, when the described soil body is highly different a plurality of soil body, the brill core that described sampling detects for the soil body comprises take desired depth and samples as ladder having the soil body of maximum height.
Below in conjunction with an exemplary scenario shown in Fig. 3, further illustrate principle of the present utility model.
Fig. 3 is the scene schematic diagram that can implement for testing the system and method for shock compaction roadbed according to the utility model embodiment.As shown in Figure 3, at roadbed 6-9, be the soil body that is highly respectively 1m, 2m, 3m, 4m and 5m, the embedding soil pressure sensor 1-5 in their bottom, each of sensor 1-5 is connected with soil pressure sensor numerical value Acquisition Instrument 18.Impact roller 11-15 carries out shock compaction (for example, 5 times, 10 times, 15 times) to roadbed 6-9 respectively.For object for example, in Fig. 3, settlement gauge 17 is embedded in the soil body of the roadbed 2 that is highly 2m, and uses the dark soil body 5 of 16 couples of 5m of core boring sampling machine to take 0.5m and carry out core boring sampling as ladder.It is below test process for example.
Same soil pressure sensor 2 is embedded in the soil body 7 times that 2m is high, under the impact-rolling of impact roller 12, is recorded the data of soil pressure sensor 2 outputs by soil pressure sensor numerical value Acquisition Instrument 18.Soil pressure sensor 3,4,5 bury underground with collecting method by that analogy.Soil pressure sensor numerical value Acquisition Instrument 18 is transferred to treating apparatus (not shown) by the pressure data collecting, and can obtain soil body height and soil body base pressure (or pressure) test data as table 1.
Table 1
| Soil body height | 1m | 2m | 3m |
| Base pressure | 889.5kPa | 175.2kPa | 52.5kPa |
From table 1, data can be found out, the soil body is when the 2m degree of depth, and the impact force of the impact roller being subject to (pressure) has approximately decayed to 20%.The percussion of the soil body that impact force contrast 2m is darker is not obvious.
Repeat above-mentioned test process, use impact roller 11-15 respectively roadbed 6-9 to be carried out to repeatedly shock compaction (for example, 5 times, 10 times, 15 times).Use the dark soil body 5 of 16 couples of 5m of core boring sampling machine to take 0.5m as ladder carries out core boring sampling, then utilize the compactness analysis that bores core analytical equipment or carry out the soil body in laboratory.Can obtain the soil body degree of depth-degree of compaction table of comparisons 2.
Table 2
From the compactness analysis result shown in table 2, can find out, impact road roller to loess subgrade the reinforcing effect in 2m depth bounds, while impacting 10 times best.And by being embedded in highly the settlement gauge 17 for the soil body of the roadbed 2 of 2m, can obtain the settling amount that impact densifying-machine compacting records for 10 times is 3.2cm, and this is very desirable numerical value.
From above-mentioned table 1 and table 2, the test result of record, can determine in the exemplary scenario shown in Fig. 3, impact road roller to loess subgrade the reinforcing effect in 2m depth bounds, while impacting 10 times best, and settling amount is less.By this reinforcement mode, can effectively reduce settlement after construction, guarantee the permanent stable of roadbed.
Below describe by reference to the accompanying drawings preferred embodiment of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each the concrete technical characterictic described in the above-mentioned specific embodiment, in reconcilable situation, can combine by any suitable mode, for example, the order of step S200 and S202 can be changed, and two steps also can be carried out after step S206.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible combinations.
In addition, between various embodiment of the present utility model, also can be combined, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (5)
1. for testing a system for the roadbed of shock compaction, it is characterized in that, this system comprises:
Pressure-detecting device, is configured to detect the base pressure of the soil body of described roadbed;
Settlement gauge, is configured to detect the settling amount of the described soil body before and after shock compaction;
Core boring sampling device, is configured to the brill core that sampling detects for the soil body;
Bore core analytical equipment, be configured to analyze the brill core of described core boring sampling device sampling, to obtain degree of compaction; And
Treating apparatus, is configured to output test result according to detected base pressure, settling amount and described degree of compaction.
2. system according to claim 1, is characterized in that, described pressure-detecting device is configured to detect the base pressure of highly different a plurality of soil bodys.
3. system according to claim 2, is characterized in that, described pressure-detecting device comprises a plurality of pressure sensors and pressure sensor data collector, wherein
Described a plurality of pressure sensor is arranged on the bottom of described a plurality of soil bodys; And
Described pressure sensor data collector is configured to gather the pressure data that described a plurality of pressure sensor obtains, and obtained pressure data is outputed to described treating apparatus.
4. system according to claim 1, is characterized in that, described core boring sampling device is configured to take desired depth and samples as ladder.
5. system according to claim 1, is characterized in that, the described soil body is highly different a plurality of soil bodys, and described core boring sampling device is configured to take desired depth and sample as ladder having the soil body of maximum height.
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| CN201320633260.3U CN203514291U (en) | 2013-10-14 | 2013-10-14 | System for testing impact compacted road bed |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669318A (en) * | 2013-10-14 | 2014-03-26 | 中国神华能源股份有限公司 | System and method for testing impact compacted road bed |
| CN104652180A (en) * | 2015-02-11 | 2015-05-27 | 中国水利水电第四工程局有限公司 | Roadbed filling construction method |
| CN105239551A (en) * | 2015-09-30 | 2016-01-13 | 贵州正业工程技术投资有限公司 | Vibration rolling quality control method |
-
2013
- 2013-10-14 CN CN201320633260.3U patent/CN203514291U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669318A (en) * | 2013-10-14 | 2014-03-26 | 中国神华能源股份有限公司 | System and method for testing impact compacted road bed |
| CN104652180A (en) * | 2015-02-11 | 2015-05-27 | 中国水利水电第四工程局有限公司 | Roadbed filling construction method |
| CN104652180B (en) * | 2015-02-11 | 2016-03-16 | 中国水利水电第四工程局有限公司 | A kind of roadbed filling construction method |
| CN105239551A (en) * | 2015-09-30 | 2016-01-13 | 贵州正业工程技术投资有限公司 | Vibration rolling quality control method |
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