CN109763476A - A kind of device and method of the compactness of quick detection fill subgrade - Google Patents
A kind of device and method of the compactness of quick detection fill subgrade Download PDFInfo
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- CN109763476A CN109763476A CN201910186148.1A CN201910186148A CN109763476A CN 109763476 A CN109763476 A CN 109763476A CN 201910186148 A CN201910186148 A CN 201910186148A CN 109763476 A CN109763476 A CN 109763476A
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Abstract
The present invention provides a kind of device and method of quickly detection fill subgrade compactness, described device include: whereabouts bucket, under drop hammer, dropped hammer in the bucket of whereabouts under described, it is characterized in that, there are vehicle frame and handrail on the outside of the whereabouts bucket, inside there is limit slideway and locking device, lower part to have glass scales plate；It drops hammer under described, which is characterized in that for tup in coniform, rear end can connect calibration stick and counterweight limit rod piece；Calibration stick can by screw and under drop hammer interconnections, counterweight limits rod piece and can be attached with counterweight.The solution of the present invention ensure that device durability and accuracy, and can quickly measure fill subgrade compactness.
Description
Technical field
The invention belongs to Road Bed Compactness detection technique fields, are related to a kind of device of quickly detection soil compaction degree
And method, the compactness suitable for fill subgrade detect.
Background technique
Compactness is also known as compacting degree, the dry density and standard maximum dry density after referring to soil or the compacting of other construction materials
The ratio between, and it is expressed as a percentage.Compactness is one of the key index of subgrade and pavement detection of construction quality, after characterizing field compaction
Density situation, compactness is higher, and density is bigger, and material overall performance is better.For roadbed, semi-rigid base course and pellet
For class flexbile base, compactness refers to that the dry density actually reached on building site and maximum dry obtained by indoor standard hit-solid experiment are close
The ratio of degree.
The quality of highway subgrade is the basic guarantee of highway safety, reinforces the control to Road Bed Compactness, is to ensure
An important ring for roadbed quality will accelerate highway road if Subgrade Compaction is not up to standard under extraneous rainwash, immersion
The decline of base compactness, and then cause a series of quality diseases on roadbed and road surface influences the safety of driving and comfortable, after increase
The maintenance and administration fee of phase highway.In fill subgrade, especially in high-fill roadbed, the control of compactness in work progress
System has very important effect to entire construction quality, needs to carry out a large amount of compactness test at this time to ensure engineering matter
Amount.Traditional compactness detection technique, detection is slow, and the period is long, low efficiency.It is not able to satisfy the need of quick, accurate detection compactness
It asks.
It is getting faster recently as highway in China laying speed, the highway of fill subgrade is also more and more, fill subgrade
Compactness detection demand is also increasing, and accurate quickly measurement compactness becomes new problem:
(1) conventional compaction degree measuring method sample, quantity of sampling quantity is fewer, the soil compaction degree representativeness determined compared with
It is weak, dynamics is represented without stronger.
(2) conventional measurement level pressure solidity method and step will fetch soil sample at the scene, and wet density is measured in laboratory, is done
Density, compactness etc., long period.It is facing, when area of heavy rainfull, compactness is all changing daily, the compacting of measurement early period
Degree loses representativeness.
(3) the conventional compaction degree measuring method amount of labour used is larger, and multiple Specialty Experiment personnel is needed to co-operate, and operation is multiple
Miscellaneous, process is cumbersome.
It is relied solely in fill subgrade, especially high-fill roadbed measurement compactness using tradition based on foregoing description
Compactness Method, it is cumbersome, be also easy to produce work holdup phenomenon, the efficiency of other construction machineries cannot be given full play to.
In view of this, a kind of device of novel quick detection fill subgrade compactness should be provided, to solve the prior art
There are the problem of.
Summary of the invention
In order to solve the above-mentioned technical problem the present invention makes, the purpose is to provide a kind of speed detection highway subgrade pressure
The device of solidity enables construction technical staff constantly to obtain to greatly speed up the efficiency of fill subgrade compactness detection
Newest soil compaction degree status data, meanwhile, it instructs further to construct in roadbed treatment.
To achieve the goals above, the present invention provides a kind of detection device and methods comprising whereabouts bucket, the bucket is in sky
Heart cylinder, side wall have vertical bar shaped aperture, and tapping is installed with graduated glass.Under drop hammer, which can be in the bucket of whereabouts
Do the movement of falling object；Stick is demarcated, for demarcating down the impact distance to drop hammer.
Preferably, the diameter of the whereabouts bucket can be in 10-15cm, highly within the scope of 100cm-120cm.
Preferably, the material of the whereabouts bucket can be made of thin-wall steel tube.
Preferably, the material to drop hammer under described can be made of ormolu.
By the impact distance to drop hammer under measurement, to determine by the compactness of the impact soil body, and it is parallel to take multiple points to carry out
Experiment improves detection data representativeness and accuracy.
According to the description above and practice it is found that the device of measurement compactness of the present invention, special for fill subgrade
It is not the characteristic of high-fill roadbed, accelerates the speed of soil compaction degree detection, ensured the timeliness of compactness data.It solves
Under the prior art, technical problem in traditional detection fill subgrade Compactness Method.And reduce the expense of compactness detection
With.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in the present invention.
Fig. 2 be in the present invention under drop hammer and demarcate the structural schematic diagram of stick.
Fig. 3 is the counter weight construction schematic diagram in the present invention.
Fig. 4 is gag lever post schematic diagram of the present invention.
Fig. 5 is locking structure schematic diagram of the invention.
It drops hammer under the whereabouts 1- bucket, 2- in figure, 11- limit slideway, 12- locking device, 13- glass scales plate, 14 vehicle frames are helped
Hand, 21- calibration stick, 22- calibrated scale line, 23- counterweight gag lever post, 24- counterweight, 12-1 locking rubber ring, 12-2 locking steel ring,
12-3 limitation lock.
Specific embodiment
Below with reference to the accompanying drawings the embodiment of quick detection fill subgrade compactness of the present invention described.This field
Routine experimentation technical staff will recognize, without departing from the spirit and scope of the present invention, can use various differences
Mode described embodiment is modified.Therefore, attached drawing and description are regarded as illustrative in nature, rather than for limiting
Scope of protection of the claims processed.In addition, in the present specification, attached drawing is not drawn to scale.
Figure one is schematic diagram, shows detection device described in one embodiment of the present of invention.As shown in figure, this hair
Detection device described in the bright embodiment includes whereabouts bucket 1, under drop hammer 2, counterweight 24, wheel, vehicle frame handrail 14, whereabouts bucket 1
Wherein with limit slideway 11 and locking device 12, bucket 1 side wall in whereabouts has a vertical bar shaped aperture, and tapping installation has scale
Glass scales plate 13, be equipped with down in whereabouts bucket 1 and drop hammer 2, under drop hammer and connect the calibration stick for removably having calibration line after 2
21, the two can pass through limiting device 12 in whereabouts bucket 1.
Whereabouts bucket 1 is in a hollow cylinder, is made of thin-wall steel tube, it is preferred that length is at 100 centimetres to 120 centimetres
In the range of, internal diameter is in 10-12 cm range, in actual use, can according to different soil conditions adjust bucket internal diameter and
Highly, counterweight is increased or decreased, to be suitble to the test of different soil properties.In the embodiment of the invention, the size of staving should have
Standby portability, can suitably be adjusted, but embodiments of the present invention are not limited thereto according to use environment.
The structure that slideway 11 is a limiting displacement direction is limited, is mounted on the inside of whereabouts bucket 1, when work, with calibration stick
Cooperate between 21, vertical drop of dropping hammer under guarantee.
Locking device 12 includes locking rubber ring 12-1, locking steel ring 12-2 and limitation lock 12-3, wherein locking rubber ring
For the structure for sliding of dropping hammer under a limitation, locking steel ring 12-2 is located on the outside of locking steel ring 12-1, and limitation lock 12-3 is a spring
Construction of switch, when work drops hammer by under to be mentioned to a certain height, closes limitation lock, locking steel ring tightening, locking rubber ring occlusion mark
Determine stick, it is ensured that under drop hammer and be temporarily fixed at a certain height.
Under drop hammer 2 include taper tup 25 and calibration stick 21, wherein the outer diameter of tup 25 is slightly less than the internal diameter of whereabouts bucket 1,
It drops hammer and 2 freely falls under guarantee, while in turn ensuring down 2 acceleration without other directions that drop hammer, it is ensured that its vertical impact soil body,
Calibration stick 21 is used to measure the depth of the impact soil body.Calibrated scale line 22, and glass scales plate are provided on calibration stick 21
After being compared, for reading impact distance.
Counterweight gag lever post 23 is provided on tup 25, for installing counterweight 24, the counterweight 24 is a circular ring type knot
Structure, outer diameter are less than 1 internal diameter of whereabouts bucket, and internal diameter is greater than the outer diameter of calibration stick 21, can facilitate and fall from calibration 21 top of stick, and
It can drop hammer and 2 act under together.There is the limit hole 241 cooperated with gag lever post 23 in counterweight.
Preferably, 23 lower end of counterweight gag lever post can be freely rotated relative to tup 25, and centre is with the edge of a wing 231
Structure, upper surface have groove.The upper end of the limit hole 241 of the counterweight and the intermediate portion structure of gag lever post 23 match,
Facilitate insertion gag lever post 23.And there is engaging slot in the middle part of limit hole 241, when passing through rotary spacing bar 23, the edge of a wing 231 with
The engaging slot blocks, and realizes the fixation of counterweight, it is ensured that drops hammer and demarcates stick under and keep one in impact process.It is described
Rotational angle is preferably 90 degree.The groove that the rotation can be inserted into 23 upper surface of gag lever post by external tool is realized.
In another program, 23 section of counterweight gag lever post is non-circular structure, at least partly distance at surface location
The size in gag lever post axle center is in the structure become larger.241 section of limit hole is non-circular structure, at least partly position
The size apart from limit hole axle center at place is less than the size in the 23 surface distance gag lever post axle center of gag lever post.In this way in limit hole
After the 23 insertion limit holes 241, by rotating the gag lever post, it can be achieved that clamping fixed.Preferably, the limit hole and
Material of at least one the gag lever post at the clamping position is the material with certain elasticity.Such as rubber etc..
Under drop hammer 2 material using steel core nickel plating alloy, guarantee that its physicochemical properties is stablized, be not easy to be corroded, with true
It is accurate to protect data.
When work, calibration instrument is carried out in the region of known compactness first, for the soil body of different compactnesss, is fallen
The impact depth of hammer 2 is different, reads calibration 2 calibrated scale line of stick and corresponding 13 scale of glass scales plate, is scaled down and drops hammer 2
Impact depth.Multiple spot calibration is carried out, precision is gradually increased to grade, obtains the related pass between impact depth and compactness
System.After calibration, which is moved to area to be detected, using locking device after identical height lock is fixed and dropped hammer, is unclamped
Locking switch, the hammer that causes to fall and break, without dropping hammer 2 under initial velocity release, carry out the impact soil body, record impact depth, detection compacting along slideway
Degree.
The compactness of multiple spot can be measured, to further react after many places take a measurement based on the device of above-mentioned offer
Subgrade compaction situation achievees the purpose that quickly to detect fill subgrade compactness.
In another preferred embodiment, it is contemplated that the test problems with gradient ground, when there is the gradient on ground, inspection above
Device is surveyed to be placed on bottom surface and can generate inclination so that under drop hammer and not vertically fall, cause testing result inaccuracy.To solve
Compactness rapid survey problem on slope guarantees that device has identical weight component in the slope surface of different angle,
In the present embodiment, rear of dropping hammer under is provided with scale, the cubic water tank that can be filled the water, guarantee quality can continuity adjust,
Wherein Water in Water Tanks position height formula is,
In formula
D is preset impact force
M drops hammer under being and the quality of water tank
Δ m is the quality for injecting water
R is side length inside water tank
θ is slope surface angle
Water tank can be set on calibration stick 21, also can be set and is dropped hammer in upper or counterweight under, using such side
Case, when there is the gradient on ground, the vertical component of falling speed of still being able to drop hammer under guaranteeing reaches scheduled value.Preferably, water
Case can be cylindrical structure or cubic structure or other structures, guarantee center of gravity on calibration 21 axis of stick, water tank
It fills the water discharge structure and uses existing known features, details are not described herein.
In preferred scheme, according to above-mentioned principle, it is provided with not on water tank previously according to ground inclination angle
It is more simple direct the problem of calculating this avoid scene with the graduation mark of color.Specifically, water tank is transparent configuration,
The graduation mark can be parallel with water tank inner horizontal after device is placed on ground around the circle of water tank one or half-turn
Graduation mark be exactly to make a reservation for water level to be achieved, not enough if can fill the water, discharge water if being more than.It is recognised that described
Different graduation marks is that have one to correspond to the angle for level when device different angle is placed.So multiple graduation marks exist
It is cross one another structure on water tank, is distinguished by different colours.In preferred scheme, in order to avoid multiple graduation marks
Graduation mark interference effect caused by intersection is read, and the setting position of different graduation marks is different, to avoid intersecting as far as possible.
Wherein it is preferred to then need ground grading to measure again more than the degree within 15 degree of the ground line gradient range.
The graduation mark corresponds to not deviate 2 degree one, it is highly preferred that 1 degree one.In this case, for the requirement for horizontality on ground
Without too high, time and cost can be saved, improves measurement efficiency.
In preferred scheme, in order to allow the gap of graduation mark to become apparent, the water tank can be set to up-small and down-big
Pyramidal structure.Due to will result in water level so being slightly tilted a little in inclination for pyramidal structure and generating biggish change
Change and (analyzes its principle, by taking up-small and down-big taper as an example, cavity longitudinal section above the water surface is triangular structure, water when inclination
Face still can keep horizontal, so the length of horizontal triangle base becomes larger, the taper of taper the big, and inclination is that the water surface is vertical
Cross-sectional length variation is bigger, and triangular cavity constancy of volume, then height can vary widely, this is because of triangle area
Equal to bottom edge multiplied by height, so SEA LEVEL VARIATION is obvious), when increasing water, water level is with water-head when level away from more bright
Aobvious, therefore, graduation mark position variation is obvious, avoids the appearance of graduation mark interference.The cisten mechanism not necessarily uses rule
Structure, can be polymorphic structure, as long as guarantee from the bottom up volume it is increasing, also, the change rate it is more big more
Well, graduation mark position variation is obvious when such run-off the straight.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.In addition, although using some specific terms in this specification, these terms are only
For convenience of explanation, it does not limit the present invention in any way.
Claims (10)
1. a kind of device of quickly detection fill subgrade compactness, which is characterized in that described device include: whereabouts bucket, under drop hammer,
It is dropped hammer in the bucket of whereabouts under described, which is characterized in that have vehicle frame and handrail on the outside of the whereabouts bucket, inside there is limit slideway and locking
Glass scales plate is arranged at device, lower part；It drops hammer under described, which is characterized in that in coniform, rear end can connect calibration stick and match tup
Rod piece is limited again；Calibration stick can by screw and under drop hammer interconnections, counterweight limits rod piece and can be attached with counterweight.
2. whereabouts bucket as described in claim 1, which is characterized in that the internal diameter of the staving is in 10-15cm, highly in 100cm-
Within the scope of 120cm.
3. whereabouts bucket as described in claim 1, which is characterized in that there are one in the bucket can cause to fall and break hammer without under initial velocity
The limit slideway and locking device fallen.
4. whereabouts bucket as described in claim 1, which is characterized in that the material of the staving is steel pipe.
5. whereabouts bucket as described in claim 1, which is characterized in that the side wall of the staving has vertical aperture, tapping installation
There is glass scales plate.
6. dropping hammer under as described in claim 1, which is characterized in that under drop hammer after be connected with calibration stick.
7. dropping hammer under as described in claim 1, which is characterized in that under drop hammer after be connected with counterweight limit rod piece.
8. dropping hammer under as described in claim 1, which is characterized in that under the shape dropped hammer in regular conical.
9. calibration stick as described in claim 1, which is characterized in that have calibrated scale line on calibration stick.
10. a kind of method of quickly detection fill subgrade compactness, it is characterised in that using described in any of the above-described claim
Device detect.
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| CN201910186148.1A CN109763476A (en) | 2019-03-12 | 2019-03-12 | A kind of device and method of the compactness of quick detection fill subgrade |
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| CN201910186148.1A CN109763476A (en) | 2019-03-12 | 2019-03-12 | A kind of device and method of the compactness of quick detection fill subgrade |
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