CN112695726B - Fine-grained soil large-thickness roadbed compactness detection device and detection method - Google Patents
Fine-grained soil large-thickness roadbed compactness detection device and detection method Download PDFInfo
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- CN112695726B CN112695726B CN202011452001.1A CN202011452001A CN112695726B CN 112695726 B CN112695726 B CN 112695726B CN 202011452001 A CN202011452001 A CN 202011452001A CN 112695726 B CN112695726 B CN 112695726B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
- E02D1/025—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil combined with sampling
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Abstract
A device and a method for detecting the compaction degree of a fine-grained soil large-thickness roadbed relate to a device and a method for detecting the compaction degree. Form the cross spout in the middle of four angle bar stands, the roof is fixed to the upper end, the pterygoid lamina is fixed respectively to the lower extreme, fixed lantern ring in the middle of every two adjacent angle bar stands, four flexible posts are fixed in the pterygoid lamina bottom, the bottom plate is fixed in four flexible capital portions, the groove of wearing has been seted up at the center, it sets up and slides and place in the cross spout to go up balancing weight and balancing weight vertical cross down, four strike the piece and be the cross and arrange in last balancing weight and balancing weight bottom down, it slides and passes the lantern ring that corresponds to be provided with the pole setting, it fixes two pole setting lower extremes that correspond at last balancing weight to fetch earth the sleeve, two pole setting lower extremes that correspond at balancing weight down can be dismantled to two combination cutting rings, the combination cutting ring is by the sword tail, tool bit and a plurality of intermediate ring equipment form. Can accomplish twice parallel determination simultaneously, combination cutting ring and the cooperation of the sleeve that fetches earth are ingenious, reduce the destruction to the road bed surface.
Description
Technical Field
The invention relates to a compaction degree detection device and method, in particular to a fine-grained soil large-thickness roadbed compaction degree detection device and method, and belongs to the technical field of roadbed performance detection.
Background
The roadbed compactness is one of key indexes for roadbed and pavement construction quality detection, the density condition after on-site compaction is represented, and the higher the compactness is, the higher the density is, and the better the overall performance of the material is. The traditional detection method generally comprises a sand filling method and a cutting ring method, wherein the sand filling method is quite complex in operation, and the cutting ring method is generally adopted for fine-grained soil subgrades.
However, according to the standard requirements, the circular-blade soil sampling needs to be performed twice parallel measurement, the conventional circular-blade soil sampling needs to be performed twice, which is time-consuming and labor-consuming, and the circular blade needs to be taken out by pick excavation, which causes great damage to the roadbed surface.
Therefore, it is necessary to improve the compaction degree of the roadbed detected by taking soil samples by the traditional ring cutting method, so as to improve the efficiency of detection and sampling and reduce the damage to the roadbed surface.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a device and a method for detecting the compaction degree of a fine-grained soil large-thickness roadbed, which can simultaneously complete two times of parallel measurement, improve the efficiency of detection and sampling, and have the advantages that the combination cutting ring is skillfully matched with a soil taking sleeve, the taking out is convenient and regular, and the damage to the roadbed surface can be reduced.
In order to achieve the purpose, the invention adopts the following technical scheme: a fine-grained soil large-thickness roadbed compactness detection device comprises a main body support, an upper balancing weight, a lower balancing weight, a soil taking sleeve, two combined cutting rings and four knocking blocks, wherein the main body support comprises a top plate, a bottom plate, four angle iron stand columns, four lantern rings and four telescopic columns, the four angle iron stand columns are arranged at equal intervals, a cross sliding groove is formed between the four angle iron stand columns, the top plate is fixed at the upper ends of the four angle iron stand columns, a wing plate extending horizontally outwards is fixed at the lower end of each angle iron stand column respectively, the lantern rings are fixed in the middles of the lower ends of every two adjacent angle iron stand columns, the four telescopic columns are fixed at the edge positions of the bottoms of the four wing plates respectively, adjusting nuts capable of controlling the heights of the telescopic columns are arranged in the middles of the four telescopic columns, the bottom plate is fixed at the bottoms of the four telescopic columns, a through groove is formed in the center of the bottom plate, and the upper balancing weight and the lower balancing weight are D-shaped blocks with arc surfaces facing downwards, the upper balancing weight is provided with a bottom gap, the lower balancing weight is provided with a top gap, the upper balancing weight and the lower balancing weight are vertically arranged in a cross sliding groove in a crossed way and are placed in the cross sliding groove in a sliding way, pull rods are respectively fixed at two ends of the upper surface of the upper balancing weight and two ends of the upper surface of the lower balancing weight, the two pull rods corresponding to the upper balancing weight and the upper ends of the two pull rods corresponding to the lower balancing weight are respectively connected and fixed through cross beams, the cross beam corresponding to the upper balancing weight is positioned above the upper balancing weight, the four pull rods respectively penetrate through hole positions reserved at corresponding positions of a top plate, the four knocking blocks are arranged at the bottoms of the upper balancing weight and the lower balancing weight in a cross way, the upper parts of the knocking blocks are arc surfaces and are matched with the bottoms of the corresponding upper balancing weight or the lower balancing weight, vertical rods are respectively arranged at the bottoms of the knocking blocks integrally and slide through the corresponding lantern rings, two fixed wings are arranged at the top of the soil taking sleeve and are fixed at the lower ends of the two vertical rods corresponding to the upper balancing weight, the soil sampling sleeve can penetrate through the through groove, the two combined cutting rings are located inside the soil sampling sleeve and can be respectively detachably fixed at the lower vertical rod lower ends corresponding to the lower balancing weight, each combined cutting ring comprises a cutter tail, a cutter head and a plurality of middle rings, the cutter tail is in the shape of a circular groove with a downward opening, a connecting groove is integrally formed in the upper end of the cutter tail, a fastening bolt is arranged in a matched mode and is tightly fixed with the lower end of the vertical rod, an exhaust hole penetrates through the cutter tail, two through holes are symmetrically formed in the edge of the cutter tail, the cutter head is in the shape of an annular shape, two inserted bars are symmetrically fixed on the upper end of the cutter head, the middle rings are respectively symmetrically provided with two through holes, two inserted bars are stacked and inserted on the two inserted bars, the upper ends of the two inserted bars penetrate through the two through holes respectively, threads are arranged on the inserted bars, locking nuts are screwed on the upper ends of the inserted bars, and cutting edges are arranged at the bottoms of the cutter head and the soil sampling sleeve.
A detection method of a fine-grained soil large-thickness roadbed compactness detection device comprises the following steps:
the method comprises the following steps: the method comprises the following steps of cleaning the surface of a roadbed through an external tool to achieve preliminary leveling, placing a main body support to enable a soil inserting nail to be inserted into the ground, enabling a bottom plate to be stably contacted with the surface of the roadbed, controlling the height of a telescopic column through rotating an adjusting nut, and simultaneously observing a level gauge until a wing plate is adjusted to be horizontal, namely four angle iron stand columns are vertical;
step two: simultaneously, manually lifting the two beams upwards to lift the upper balancing weight and the lower balancing weight away from the four knocking blocks, then loosening the lower balancing weight to knock the two combined cutting rings, knocking the combined cutting rings firstly to not influence a soil sample, then loosening the upper balancing weight to knock the soil taking sleeve, knocking the soil taking sleeve to tightly press an external soil layer of the combined cutting rings to be convenient for integrally taking out, and repeating the steps until the two combined cutting rings are drilled into the underground to a preset depth;
step three: lifting the main body support upwards to enable the soil taking sleeve and the two combined cutting rings inside the soil taking sleeve to be completely separated from the ground, cleaning a soil layer between the soil taking sleeve and the two combined cutting rings, unscrewing the fastening bolts to take the two combined cutting rings down, selecting an intermediate ring corresponding to the sampling depth as a detection sample, dismounting the locking nut to enable the combined cutting rings to be relatively loose, utilizing the soil repairing blade to separate a soil sample in the detection sample from soil samples in other parts of the combined cutting rings, and then disassembling the combined cutting rings to take down the detection sample to measure the total mass m of the intermediate ring and the soil sample1Accurate to 0.1g, then taking out a soil sample to determine the water content w, wiping the soil sample dry and measuring the mass m of the intermediate ring2The same was true to 0.1g, and finally the degree of compaction was calculated according to T0923-1995 "test method for degree of compaction by Ring knife method", and two replicates were performed.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the optimized design is carried out on the equipment for taking the soil sample by the ring cutter method, the defect that multiple tools are needed for combination operation in the prior art is overcome, the upper balancing weight is matched with the soil taking sleeve, the lower balancing weight is matched with the two combined ring cutters, on one hand, the cambered surface of the lower balancing weight simultaneously knocks the two combined ring cutters, so that two times of parallel measurement can be completed simultaneously, the efficiency of detection and sampling is improved, on the other hand, the two combined ring cutters are knocked firstly and then the soil taking sleeve is knocked, the repeated operation compacts the soil between the combined ring cutters and the soil taking sleeve, the soil in the soil taking sleeve and the two combined ring cutters can be conveniently pulled out together, a regular round hole is formed on the road surface after the soil is taken out, the damage to the surface of the road foundation is reduced, the design of the combined ring cutters is convenient for pertinently selecting the soil sample with the sampling depth, and the equipment is more reasonable and practical.
Drawings
FIG. 1 is an axonometric view of the overall structure of the fine-grained soil large-thickness roadbed compactness detection device of the invention;
FIG. 2 is an isometric view of the subject support of the present invention;
FIG. 3 is an isometric view of an upper counterweight and a lower counterweight of the present invention;
FIG. 4 is an isometric view of the soil sampling sleeve of the present invention;
FIG. 5 is an isometric view of the combination ring cutter of the present invention;
fig. 6 is an exploded view of the combination ring knife of the present invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
The first embodiment is as follows: as shown in figures 1-6, the invention discloses a fine-grained soil large-thickness roadbed compactness detection device, which comprises a main body support, an upper balancing weight 7, a lower balancing weight 8, a soil taking sleeve 12, two combined cutting rings and four knocking blocks 11, wherein the main body support comprises a top plate 2, a bottom plate 4, four angle iron stand columns 1, four lantern rings 3 and four telescopic columns 5, the four angle iron stand columns 1 are arranged at equal intervals, a cross sliding chute 1-1 is formed among the four angle iron stand columns, the top plate 2 is fixed at the upper ends of the four angle iron stand columns 1, the lower end of each angle iron stand column 1 is respectively fixed with a wing plate 1-2 extending horizontally and outwards, the middle of the lower end of each two adjacent angle iron stand columns 1 is fixed with the lantern ring 3, the four telescopic columns 5 are respectively fixed at the bottom edge positions of the four wing plates 1-2, the middle of each telescopic column 5 is provided with an adjusting nut 5-1 capable of controlling the height of the telescopic column 5, the bottom plate 4 is fixed at the bottom of four telescopic columns 5, a through groove 4-1 is formed in the center of the bottom plate 4, the upper balancing weight 7 and the lower balancing weight 8 are both D-shaped blocks with downward arc surfaces, a bottom gap 7-1 is formed in the upper balancing weight 7, a top gap 8-1 is formed in the lower balancing weight 8, the upper balancing weight 7 and the lower balancing weight 8 are vertically arranged in a crossed manner and are placed in the cross-shaped sliding groove 1-1 in a sliding manner, pull rods 9 are respectively fixed at two ends of the upper surface of the upper balancing weight 7 and two ends of the lower balancing weight 8, two pull rods 9 corresponding to the upper balancing weight 7 and two upper ends of two pull rods 9 corresponding to the lower balancing weight 8 are respectively connected and fixed through cross beams 10, wherein the cross beams 10 corresponding to the upper balancing weight 7 are located above, the four pull rods 9 respectively penetrate through hole sites reserved at corresponding positions of the top plate 2, and the four knocking blocks 11 are arranged at the bottoms of the upper balancing weight 7 and the lower balancing weight 8 in a cross manner, the upper part of the knocking block 11 is an arc-shaped surface 11-1 and is matched with the bottom of the corresponding upper balancing weight 7 or lower balancing weight 8, the bottom of the knocking block 11 is respectively and integrally provided with an upright rod 11-2 which slides through the corresponding lantern ring 3, the top of the soil-taking sleeve 12 is provided with two fixed wings 12-1 which are fixed at the lower ends of the two upright rods 11-2 corresponding to the upper balancing weight 7, the soil-taking sleeve 12 can pass through the through groove 4-1, the two combined cutting rings are positioned in the soil-taking sleeve 12 and are respectively and detachably fixed at the lower ends of the two upright rods 11-2 corresponding to the lower balancing weight 8, each combined cutting ring comprises a cutter tail 13, a cutter head 14 and a plurality of intermediate rings 15, the cutter tail 13 is in the shape of a circular groove with a downward opening, the upper end of the cutter tail 13 is integrally provided with a connecting groove 13-1, the connecting groove 13-1 is matched with a fastening bolt 13-2 and is tightly fixed at the lower end of the upright rod 11-2, the cutter tail 13 penetrates through an exhaust hole 13-4, two through holes 13-3 are symmetrically formed in the edge of the cutter tail 13, the cutter head 14 is annular, two inserting rods 14-1 are symmetrically fixed to the upper end of the cutter head 14, two through holes 15-1 are symmetrically formed in the plurality of middle rings 15 respectively, the middle rings are stacked and inserted on the two inserting rods 14-1 in an overlapping mode, the upper ends of the two inserting rods 14-1 penetrate through the two through holes 13-3 respectively, threads are formed in the upper ends of the inserting rods 14-1 and are connected with locking nuts 14-2 in a screwed mode, and the bottom portions of the cutter head 14 and the soil taking sleeve 12 are provided with cutter edges.
The second embodiment is as follows: as shown in fig. 1 and 2, this embodiment is a further description of a first embodiment, and a level 6 is embedded and fixed on the upper surface of the wing plate 1-2.
The third concrete implementation mode: as shown in fig. 1 and 2, in the present embodiment, a first embodiment or a second embodiment is further described, and soil-insertion nails 4-2 are fixed to four corners of the lower surface of the bottom plate 4.
The fourth concrete implementation mode: as shown in fig. 1 to 6, the present embodiment discloses a detection method of a fine-grained soil large-thickness roadbed compactness detection apparatus according to a third embodiment, the detection method includes the following steps:
the method comprises the following steps: the method comprises the following steps of cleaning the surface of a roadbed by an external tool to realize preliminary leveling, placing a main body support to enable soil inserting nails 4-2 to be inserted into the ground, enabling a bottom plate 4 to be stably contacted with the surface of the roadbed, controlling the height of a telescopic column 5 by rotating an adjusting nut 5-1, and observing a level gauge 6 until a wing plate 1-2 is adjusted to be horizontal, namely four angle iron stand columns 1 are vertical;
step two: simultaneously, manually lifting the two beams 10 upwards to lift the upper balancing weight 7 and the lower balancing weight 8 away from the four knocking blocks 11, then loosening the lower balancing weight 8 to knock the two combined cutting rings, knocking the combined cutting rings firstly to not influence a soil sample, then loosening the upper balancing weight 7 to knock the soil sampling sleeve 12, knocking the soil sampling sleeve 12 to tightly press an external soil layer of the combined cutting rings to be convenient for integrally taking out, and repeating the steps until the two combined cutting rings are drilled into the underground to a preset depth;
step three: lifting the main body support upwards to enable the soil taking sleeve 12 and the two combined ring cutters in the soil taking sleeve to be completely separated from the ground, cleaning a soil layer between the soil taking sleeve 12 and the two combined ring cutters, then loosening the fastening bolts 13-2 to take the two combined ring cutters down, selecting the middle ring 15 corresponding to the sampling depth as a detection sample, dismounting the locking nut 14-2 to enable the combined ring cutters to be relatively loose, utilizing the soil repairing blade to separate soil samples in the detection sample from soil samples in other parts of the combined ring cutters, then disassembling the combined ring cutters to take the detection sample down to measure the total mass m of the middle ring 15 and the soil samples1Accurate to 0.1g, then taking out a soil sample to determine the water content w, wiping off the intermediate ring 15 and measuring the mass m2The same was true to 0.1g, and finally the degree of compaction was calculated according to T0923-1995 "test method for degree of compaction by Ring knife method", and two replicates were performed.
Referring to fig. 1 as the complete working state of the invention, as shown in fig. 2, the lower surface of the bottom plate 4 of the main body bracket is fixed with a soil inserting nail 4-2 which is inserted into the ground to enhance the overall stability of the sampling stage, a level gauge 6 is used for observing the levelness of a wing plate 1-2, namely whether four angle iron upright posts 1 are vertical or not, the height of a telescopic post 5 is controlled by rotating an adjusting nut 5-1 to realize the adjustment of the levelness of the wing plate 1-2, a cross sliding chute 1-1 is formed between the four angle iron upright posts 1 for installing and limiting an upper balancing weight 7 and a lower balancing weight 8, as shown in fig. 3, the upper balancing weight 7 and the lower balancing weight 8 are in the shape of a D-shaped block with a downward cambered surface, the upper balancing weight 7 is provided with a bottom gap 7-1, the lower balancing weight 8 is provided with a top gap 8-1, so that the upper balancing weight 7 and the lower balancing weight 8 can be vertically crossed, and are in sliding fit in the cross sliding chute 1-1, in the same vertical range, the lower balancing weight 8 can simultaneously knock two combined cutting rings, the upper balancing weight 7 can knock the soil taking sleeve 12, as shown in a combined drawing 4, the soil taking sleeve 12 can extrude soil outside the two combined cutting rings to realize a certain compaction effect, so that the soil taking sleeve 12 can be pulled out together with the internal soil and the two combined cutting rings, the condition that the surface of a roadbed is greatly damaged due to soil digging by pickaxes in the traditional operation is not needed, a regular round hole is formed on the road surface after the soil taking-out, the soil filling and repairing are convenient, as shown in combined drawings 5 and 6, the combined cutting rings are assembled by a cutter tail 13, a cutter head 14 and a plurality of intermediate rings 15, the cutter tail 13 can be tightly fixed with the lower end of the upright rod 11-2 through a fastening bolt 13-2 to facilitate disassembly, the exhaust holes 13-4 facilitate the removal of internal air, the plurality of intermediate rings 15 are stacked and arranged between the cutter tail 13 and the cutter head 14, the cutter head 14 is fixed with two inserted rods 14-1 to insert a plurality of intermediate rings 15 and the cutter tail 13 together, and then the positioning is carried out through the locking nuts 14-2, so that the targeted selection of soil samples of the sampling depth is facilitated, and the whole structure is reasonable and practical.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. The utility model provides a big thickness road bed compactness detection device of fine grained soil which characterized in that: the device comprises a main body support, an upper balancing weight (7), a lower balancing weight (8), a soil sampling sleeve (12), two combined cutting rings and four knocking blocks (11), wherein the main body support comprises a top plate (2), a bottom plate (4), four angle iron stand columns (1), four lantern rings (3) and four telescopic columns (5), the four angle iron stand columns (1) are distributed at equal intervals, a cross sliding groove (1-1) is formed between the four angle iron stand columns, the top plate (2) is fixed at the upper ends of the four angle iron stand columns (1), wing plates (1-2) extending horizontally and outwards are respectively fixed at the lower end of each angle iron stand column (1), the lantern ring (3) is fixed in the middle of the lower end of each two adjacent angle iron stand columns (1), the four telescopic columns (5) are respectively fixed at the bottom edge positions of the four wing plates (1-2), and adjusting nuts (5-1) are arranged in the middle of the telescopic columns (5) and can control the heights of the telescopic columns (5), the bottom plate (4) is fixed at the bottom of four telescopic columns (5), a through groove (4-1) is formed in the center of the bottom plate (4), the upper balancing weight (7) and the lower balancing weight (8) are D-shaped blocks with downward arc surfaces, a bottom notch (7-1) is formed in the upper balancing weight (7), a top notch (8-1) is formed in the lower balancing weight (8), the upper balancing weight (7) and the lower balancing weight are vertically arranged in a crossed mode and are placed in the cross sliding groove (1-1) in a sliding mode, pull rods (9) are respectively fixed at two ends of the upper surface of the upper balancing weight (7) and at two ends of the upper surface of the lower balancing weight (8), the upper ends of the two pull rods (9) corresponding to the upper balancing weight (7) and the upper ends of the two pull rods (9) corresponding to the lower balancing weight (8) are respectively connected and fixed through cross beams (10), and the cross beam (10) corresponding to the upper balancing weight (7) is located above the cross beam (10) corresponding to the lower balancing weight (8), the four pull rods (9) respectively penetrate through hole sites reserved at corresponding positions of the top plate (2), the four knocking blocks (11) are arranged at the bottoms of the upper balancing weight (7) and the lower balancing weight (8) in a cross shape, the upper parts of the knocking blocks (11) are arc-shaped surfaces (11-1) and are matched with the bottoms of the corresponding upper balancing weight (7) or lower balancing weight (8), the bottoms of the knocking blocks (11) are respectively and integrally provided with vertical rods (11-2) and slide through the corresponding lantern rings (3), the top of the soil taking sleeve (12) is provided with two fixed wings (12-1) and is fixed at the lower ends of the two vertical rods (11-2) corresponding to the upper balancing weight (7), the soil taking sleeve (12) can penetrate through the penetrating grooves (4-1), the two combined circular cutters are positioned inside the soil taking sleeve (12) and can be respectively and detachably fixed at the lower ends of the two vertical rods (11-2) corresponding to the lower balancing weight (8), the combined cutting ring comprises a cutter tail (13), a cutter head (14) and a plurality of middle rings (15), wherein the cutter tail (13) is in a circular groove shape with a downward opening, the upper end of the cutter tail is integrally provided with a connecting groove (13-1), the connecting groove (13-1) is matched with a fastening bolt (13-2) and is tightly fixed at the lower end of an upright rod (11-2), the cutter tail (13) penetrates through an exhaust hole (13-4), the edge of the cutter tail (13) is also symmetrically provided with two through holes (13-3), the cutter head (14) is in an annular shape, the upper end of the cutter head is symmetrically fixed with two inserted rods (14-1), the middle rings (15) are respectively symmetrically provided with two through holes (15-1) which are overlapped and inserted on the two inserted rods (14-1), the upper ends of the two inserted rods (14-1) respectively penetrate through the two through holes (13-3), the upper end of the inserted bar (14-1) is provided with threads and is screwed with a locking nut (14-2), and the bottom of the cutter head (14) and the bottom of the soil taking sleeve (12) are both provided with cutting edges.
2. The fine-grained soil large-thickness roadbed compactness detection device according to claim 1, characterized in that: a level gauge (6) is embedded and fixed on the upper surface of the wing plate (1-2).
3. The fine-grained soil large-thickness roadbed compactness detection device according to claim 1 or 2, characterized in that: soil inserting nails (4-2) are fixed at four corners of the lower surface of the bottom plate (4).
4. A detection method of the fine-grained soil large-thickness roadbed compactness detection device according to claim 3, characterized by comprising the following steps: the detection method comprises the following steps:
the method comprises the following steps: the method comprises the following steps of cleaning the surface of a roadbed through an external tool to achieve preliminary leveling, placing a main body support to enable soil inserting nails (4-2) to be inserted into the ground, enabling a bottom plate (4) to be stably contacted with the surface of the roadbed, controlling the height of a telescopic column (5) through rotating an adjusting nut (5-1), and observing a level gauge (6) until a wing plate (1-2) is adjusted to be horizontal, namely four angle iron stand columns (1) are vertical;
step two: simultaneously, the two beams (10) are lifted upwards manually to enable the upper balancing weight (7) and the lower balancing weight (8) to be lifted away from the four knocking blocks (11), then the lower balancing weight (8) is loosened to knock the two combined cutting rings, the combined cutting rings are knocked firstly to not affect a soil sample, then the upper balancing weight (7) is loosened to knock the soil sampling sleeve (12), then the soil sampling sleeve (12) is knocked to compress the soil layer outside the combined cutting rings to be convenient for integrally taking out, and the steps are repeated until the two combined cutting rings are drilled into the ground to a preset depth;
step three: lifting the main body support upwards to enable the soil taking sleeve (12) and the two combined cutting rings inside the soil taking sleeve to be completely separated from the ground, cleaning a soil layer between the soil taking sleeve (12) and the two combined cutting rings, then loosening the fastening bolts (13-2) to take the two combined cutting rings down, selecting the middle ring (15) corresponding to the sampling depth as a detection sample, dismounting the locking nut (14-2) to enable the combined cutting rings to be relatively loose, utilizing the soil repairing blade to divide a soil sample in the detection sample from soil samples in other parts of the combined cutting rings, then disassembling the combined cutting rings to take the detection sample down to measure the total mass m of the middle ring (15) and the soil sample1Accurate to 0.1g, then taking out a soil sample to measure the water contentwThe intermediate ring (15) is wiped dry to measure the mass m2The same was true to 0.1g, and finally the degree of compaction was calculated according to T0923-1995 "test method for degree of compaction by Ring knife method", and two replicates were performed.
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| JPH0243845B2 (en) * | 1984-05-30 | 1990-10-01 | Shimizu Construction Co Ltd | TSUCHINOGENBAMITSUDOSOKUTEIHOHOOYOBISONOSOCHI |
| CN205317513U (en) * | 2015-12-31 | 2016-06-15 | 黑龙江省农垦科学院 | Cutting ring pedestal fetches earth |
| CN207703526U (en) * | 2018-01-27 | 2018-08-07 | 中海监理有限公司 | One kind fetches earth cutting ring device |
| CN209836986U (en) * | 2019-01-30 | 2019-12-24 | 天津大学前沿技术研究院 | Novel cutting ring for sampling |
| CN209779597U (en) * | 2019-03-04 | 2019-12-13 | 陕西长地建设工程质量检测有限公司 | Foundation compactness detection device |
| CN211113577U (en) * | 2019-11-22 | 2020-07-28 | 中铁十二局集团第三工程有限公司 | Soil sampler for measuring compaction degree of fine-grained soil roadbed |
| CN211927343U (en) * | 2020-04-22 | 2020-11-13 | 江苏省水利科学研究院 | Cutting ring sampling device for water conservancy earthwork engineering |
| CN111579283A (en) * | 2020-05-29 | 2020-08-25 | 贾富强 | Quick detection device for roadbed compactness |
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2020
- 2020-12-09 CN CN202011452001.1A patent/CN112695726B/en active Active
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