CN210665213U - A hit a kind of sample section of thick bamboo for road bed soil is wet cycle test futilely - Google Patents
A hit a kind of sample section of thick bamboo for road bed soil is wet cycle test futilely Download PDFInfo
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- CN210665213U CN210665213U CN201921074615.3U CN201921074615U CN210665213U CN 210665213 U CN210665213 U CN 210665213U CN 201921074615 U CN201921074615 U CN 201921074615U CN 210665213 U CN210665213 U CN 210665213U
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Abstract
The utility model discloses a hit real sample cylinder for roadbed soil dry-wet cycle test, which comprises a sample cylinder inner mold, a sample cylinder outer mold, a sample cylinder base, a sleeve, a cylinder inner cushion block, a water seepage strip block, a fixing ring and a cylinder outer cushion block, wherein the sample cylinder inner mold is arranged in a circular clamping groove of the sample cylinder base, the cylinder inner cushion block is arranged at the bottom of the sample cylinder inner mold, the sample cylinder outer mold is correspondingly embedded outside the sample cylinder inner mold according to a bead and a groove, and the sleeve is arranged at the top of the sample cylinder outer mold to form a composite sample cylinder; the sample cylinder base and the sleeve are detached, an outer cylinder cushion block is arranged at the bottom of the sample cylinder filled with the roadbed soil sample, and an outer cylinder of the sample cylinder is detached from top to bottom to form an inner model cylinder containing the roadbed soil sample; the water seepage strips are arranged into the grooves one by one, then the fixing ring is arranged on the surface of the inner mold of the sample cylinder embedded with the water seepage strips to form a dry-wet cycle test sample cylinder, and the water seepage strips and the upper surface of the sample are jointly soaked for dehydration, so that the structure is practical, the method is high-efficiency, and the rapid, uniform and quantitative control of the dry-wet cycle process of the roadbed soil sample can be realized.
Description
Technical Field
The utility model belongs to the technical field of the highway geotechnical test, concretely relates to a hit a kind of reality section of thick bamboo for road bed soil is wet cycle test futilely.
Background
In road soil tests, a sample cylinder is one of the most common test devices, and a compaction sample cylinder is generally a cylindrical hollow cylinder made of steel. In the dry-wet cycle test, the conventional compaction sample cylinder is mainly adopted at present, and because the side wall of the conventional compaction sample cylinder is impermeable, the roadbed soil sample prepared by adopting the sample cylinder is slow in water seepage and dehydration, and meanwhile, the water inside the sample is uneven in the dry-wet cycle process.
In order to solve the problems, the prior art mainly has two ways to improve the traditional sample cylinder and the sample preparation process, one way is to add a water seepage channel on the side wall of the traditional sample cylinder, for example, to open a hole on the side wall to form a structure similar to a water filter pipe, the structure accelerates the soaking and dehydrating process of a sample to a certain extent, but the filter hole is easy to block in the sample preparation process, and meanwhile, the water inflow is not easy to be quantitatively controlled. The other mode is that the side wall of a traditional sample cylinder is not changed, after a roadbed soil sample is prepared, a water seepage channel is additionally arranged in the soil sample, for example, a miniature sand well is additionally arranged in the sample to serve as the water seepage channel, the mode can also effectively accelerate the wetting and drying process, but certain disturbance is caused to the structure of the roadbed soil sample, the test result is possibly influenced, the sample preparation operation process is complex, and the operation is inconvenient.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a hit a real appearance section of thick bamboo for roadbed soil is wet cycle test futilely, this structure and the experimental butt joint of existing highway geotechnological, dependable performance, economical and practical, extensive applicability can be used to highway roadbed soil to hit real experimental, do the system appearance of wet cycle test, CBR experiment etc. and prepare appearance.
In order to further realize the above purpose, the utility model adopts the following technical scheme: a compaction sample cylinder for a roadbed soil dry-wet cycle test comprises a sample cylinder inner mold, a sample cylinder outer mold, a sample cylinder base, a sleeve, a cylinder inner cushion block, a water seepage strip block, a fixing ring and a cylinder outer cushion block, wherein the sample cylinder inner mold is a stainless steel cylindrical hollow cylinder, and a plurality of grooves are annularly and equidistantly distributed on the side wall of the sample cylinder inner mold; the sample cylinder outer mold is a stainless steel cylindrical hollow cylinder, and the inner side wall of the sample cylinder outer mold is distributed with convex edges with the same number and distribution as the grooves; the sample cylinder base consists of a base, a fixing screw rod and a fixing nut, the base is a disc made of stainless steel, and the upper part of the disc is provided with a concentric circular clamping groove; the sleeve is a cylindrical hollow cylinder made of stainless steel, and the bottom of the sleeve is provided with an annular clamping groove; the cylinder inner cushion block is a cylindrical iron block; the water seepage strip block is a strip block consisting of a water permeable plate and a water-isolating cushion and is used for a water seepage and dehydration channel on the side wall of the sample cylinder; the fixing ring is a stainless steel lantern ring and is used for fixing the water seepage strip block and the sample cylinder inner mold; the outer cylinder cushion block is a cylindrical iron block with a clamping groove A, and the cross section shape and distribution of the clamping groove A are the same as those of the grooves of the inner mold of the sample cylinder; the sample cylinder inner mold is placed in the circular clamping groove of the sample cylinder base, the cylinder inner cushion block is placed at the bottom of the sample cylinder inner mold, the sample cylinder outer mold is nested outside the sample cylinder inner mold in a one-to-one correspondence mode according to the convex edges and the grooves, and the sleeve is placed at the top of the sample cylinder outer mold to form a composite sample preparation cylinder; preparing a roadbed soil sample in a composite sample preparation cylinder, unloading a base and a sleeve of the sample cylinder, placing an outer cylinder cushion block at the bottom of the sample cylinder filled with the roadbed soil sample, and removing an outer mold of the sample cylinder from top to bottom to form an inner mold sample cylinder containing the roadbed soil sample; and (3) filling the water seepage strips into the grooves of the sample cylinder in the roadbed soil sample one by one, and then installing the fixing ring on the surface of the sample cylinder inner mold embedded with the water seepage strips to form a dry-wet cycle test sample cylinder containing the roadbed soil sample.
As above-mentioned technical scheme's improvement the utility model discloses an in the embodiment, the inside diameter of appearance section of thick bamboo centre form is 152mm, high 170mm, wall thickness 8mm, and the lateral wall has 3 ~ 6 recesses according to the equidistant distribution of annular, and the recess is 130mm high, and the cross section is the ring arc shape, and inboard arc length 5 ~ 10mm, a pair of centre form handle of lateral wall outside symmetry installation, centre form handle are the cuboid iron plate, and long 30mm, wide 20mm, thick 5mm, apart from terminal surface 2cm, the centre is opened there is the wide draw-in groove B of a 5 mm.
As above-mentioned technical scheme's improvement in the utility model discloses an embodiment, the inside diameter of appearance section of thick bamboo external mold is 168mm, high 125mm, wall thickness 5mm, and bead height 130mm, the cross section is the ring arc, and inboard arc length 5 ~ 10mm, a pair of external mold handle of the outside symmetry installation of lateral wall, external mold handle are cuboid iron plate, length 30mm, wide 20mm, thick 5mm, and the centre is opened there is the wide draw-in groove B of a 5 mm.
As an improvement of the above technical solution, in an embodiment of the present invention, the outer diameter of the disc is 228mm, the thickness of the disc is 10mm, the upper portion of the disc is provided with a concentric circular slot, the diameter of the circular slot is 168mm, and the height of the circular slot is 2 mm; the fixing screws are steel cylinders, the diameter of each fixing screw is 5mm, the height of each fixing screw is 210mm, and the two fixing screws are symmetrically distributed along the diameter of the disc and are 15mm away from the extension of the disc; the fixing nut is matched with the fixing screw rod.
As above-mentioned technical scheme's improvement the utility model discloses an in the embodiment, telescopic inside diameter is 152mm, high 50mm, wall thickness 13mm, and ring shape draw-in groove external diameter is 168mm, high 2mm, a pair of sleeve handle of sleeve outer wall symmetry installation, and the sleeve handle is the cuboid iron plate, and long 30mm, wide 20mm, thick 5mm, the centre is opened there is a wide 5 mm's draw-in groove B.
As an improvement of the above technical solution, in an embodiment of the present invention, the diameter of the cushion block in the cylinder is 152mm, and the thickness is 50 mm.
As an improvement of the above technical solution, in an embodiment of the present invention, the length of the water seepage strip block is 130mm, and the cross section of the water seepage strip block is an arc shape; the permeable plate is a three-dimensional plastic drainage plate or permeable stone, is 5mm thick and is positioned on the short side of the circular arc-shaped section; the water-proof cushion is soft rubber, has the thickness of 3mm and is positioned on the long side of the circular arc-shaped section; the water permeable plate and the water-resisting pad are bonded into a whole through high-viscosity sealing glue.
As an improvement of the above technical solution, in an embodiment of the present invention, the annular inner diameter of the fixing ring is 168mm, the height is 20mm, and the thickness is 5 mm.
In order to accelerate the water seepage and dehydration process of a soil sample in a dry-wet cycle test of the road soil engineering, a plurality of water seepage channels are arranged in a sample cylinder on the basis of the prior art, the water seepage and dehydration of the soil sample are accelerated by increasing water seepage paths, and the dry-wet cycle period is shortened. Meanwhile, in the soil sample preparation process, particularly, the damage to the water seepage strip blocks on the side wall of the sample cylinder is realized by adopting a compaction sample preparation method, the sample cylinder structure in the sample preparation process and the dry-wet cycle process is separated by adopting a double-layer sample cylinder structure on the premise of ensuring that the sample is not disturbed, a composite sample cylinder consisting of a steel sample cylinder inner mold and a steel outer mold is adopted in the sample preparation process, the soaking dehydration process is adopted, and the embedded sample cylinder consisting of the sample cylinder inner mold and the water seepage strip blocks is adopted, so that the sample cylinder inner mold and the roadbed soil sample are always kept from being disturbed in the two processes, and the reliability and the accuracy of the sample preparation process of the simulation test are favorably ensured.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) and (5) quickly permeating water and dehydrating the soil sample. Compared with the traditional compaction sample cylinder, the technology arranges a plurality of water seepage channels inside the sample cylinder, realizes the acceleration of water seepage and dehydration of the soil sample by increasing water seepage paths, and shortens the cycle of dry and wet cycles.
(2) The structure of the sample is not disturbed. Compared with the existing technology that a miniature sand well is additionally arranged on a sample and a sample cylinder is replaced in a standby process, the technology separates a sample preparation process from a sample cylinder structure in a dry-wet cycle process, adopts a double-layer sample cylinder structure, and protects a roadbed soil sample by a sample cylinder internal mold all the time in a sample preparation process and a soaking dehydration process conversion process, thereby effectively avoiding disturbance of the sample structure.
(3) The water seepage channel is not blocked. Compared with the existing filter tube type sample cylinder, the double-layer sample cylinder structure is adopted in the technology, the steel sample cylinder inner mold and the outer mold are adopted in the sample preparation process to form the composite sample cylinder, the pore blocking phenomenon of the water seepage channel during sample preparation is effectively avoided, and meanwhile, the detachable water seepage strip blocks are convenient to clean and maintain the water seepage channel.
(4) The quantitative control of the sample water inflow is convenient. With the present filter tube formula appearance section of thick bamboo with lateral wall infiltration passageway and sample top bottom infiltration passageway separation different, this technique is even as an organic whole with lateral wall infiltration passageway and bottom infiltration face, during the flooding, adds required water yield from the sample top, inside water soaks roadbed soil sample from sample top and appearance section of thick bamboo lateral wall infiltration passageway, can realize the quantitative control of inflow.
(5) The soaking dehydration of the soil sample is uniformly distributed. Different with current filter tube formula appearance section of thick bamboo, the utility model discloses the water conservancy influence scope of infiltration passageway is considered to the vertical infiltration strip piece passageway of addding, optimizes the quantity and the distribution of infiltration strip piece, unites sample top bottom surface infiltration passageway simultaneously, forms the passageway of approximate full surface infiltration dehydration, makes the inside moisture content evenly distributed of sample after the dehydration of soaking.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a compaction sample cylinder for a roadbed soil dry-wet cycle test of the utility model;
FIG. 2 is a schematic structural view of the sample cylinder in the roadbed soil sample containing module of the present invention;
FIG. 3 is a schematic structural view of a dry-wet cycle test sample cylinder of the present invention;
fig. 4 is a schematic structural view of the sample cylinder inner mold of the present invention;
FIG. 5 is a schematic structural view of the external mold of the sample cylinder of the present invention;
fig. 6 is a schematic structural view of the sleeve of the present invention;
FIG. 7 is a schematic structural view of the inner cushion block of the cartridge of the present invention;
fig. 8 is a schematic structural view of a sample cylinder base of the present invention;
FIG. 9 is a schematic structural view of the outer cushion block of the cartridge of the present invention;
fig. 10 is a schematic structural view of the water seepage strip of the present invention;
fig. 11 is a schematic structural view of the fixing ring of the present invention.
Description of reference numerals: 1-sample cylinder inner mold, 2-sample cylinder outer mold, 3-sample cylinder base, 4-sleeve, 5-cylinder inner cushion block, 6-roadbed soil sample, 7-groove, 8-rib, 9-1 inner mold handle, 9-2 outer mold handle, 9-3 sleeve handle, 10-fixing screw rod, 11-fixing nut, 12-cylinder outer cushion block, 13-water seepage strip block, 14-fixing ring, 15-water isolation cushion and 16-water permeable plate.
Detailed Description
The technical solutions in the embodiments of 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 some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The embodiment of the utility model provides a hit real sample section of thick bamboo for road bed soil is wet cycle test futilely, as shown in fig. 1-11, by sample section of thick bamboo centre form 1, sample section of thick bamboo external mold 2, sample section of thick bamboo base 3, sleeve 4, section of thick bamboo inner cushion 5, infiltration stick 13, solid fixed ring 14, section of thick bamboo outer cushion 12 constitute, sample section of thick bamboo centre form 1 lays on the circular draw-in groove of sample section of thick bamboo base 3, section of thick bamboo inner cushion 5 lays in sample section of thick bamboo centre form 1 bottom, sample section of thick bamboo external mold 2 is according to sample section of thick bamboo external mold bead 8 and sample section of thick bamboo centre form 7 one-to-one nestification in the outside sample section of thick bamboo centre form 1; preparing a roadbed soil sample 6 in a composite sample preparation cylinder, dismounting a base 3 and a sleeve 4 of the sample cylinder, placing an outer cylinder cushion block 12 at the bottom 3 of the sample cylinder filled with the roadbed soil sample 6, and removing an outer mold 2 of the sample cylinder from top to bottom to form an inner mold sample cylinder containing the roadbed soil sample; the water seepage strips 13 are arranged into the sample cylinder grooves 7 in the roadbed soil sample-containing inner mold one by one, and then the fixing rings 14 are arranged on the surface of the sample cylinder inner mold 1 embedded with the water seepage strips 13 to form a dry-wet cycle test sample cylinder containing the roadbed soil sample 6. Specifically, the top of the sample cylinder outer mold 2 is provided with a clamping groove, as shown by the dotted line at the upper part in fig. 3, the clamping groove is used for clamping the sleeve 4 so as not to displace.
The utility model relates to an embodiment, appearance section of thick bamboo centre form 1 is the cylindrical hollow section of thick bamboo of stainless steel, and inside diameter is 152mm, height 170mm, wall thickness 8mm, and the lateral wall has 3 ~ 6 recess 7 according to the equidistant distribution of annular, and recess 7 is high 130mm, and the cross section is the circular arc shape, and inboard arc length 5 ~ 10mm, a pair of centre form handle 9-1 of lateral wall outside symmetry installation, centre form handle 9-1 is the cuboid iron plate, and length 30mm, wide 20mm, thickness 5mm, apart from terminal surface 2cm, the centre is opened there is the wide draw-in groove B of a 5 mm.
The utility model discloses an embodiment, appearance section of thick bamboo external mold 2 is the cylindrical hollow section of thick bamboo of stainless steel, and inside diameter is 168mm, high 125mm, wall thickness 5mm, and the inboard distribution of lateral wall has the bead 8 the same with appearance section of thick bamboo centre form recess 7 figure and distribution, and bead 8 height 130mm, and the cross section is the ring arc, and inboard arc length 5 ~ 10mm, a pair of external mold handle 9-2 of the outside symmetry installation of lateral wall, external mold handle 9-2 are the cuboid iron plate, and length 30mm, wide 20mm, thick 5mm, the centre is opened there is the wide draw-in groove B of a 5 mm.
In an embodiment of the present invention, the sample cylinder base 3 is composed of a base, a fixing screw 10, and a fixing nut 11; the base is a stainless steel disc, the outer diameter of the base is 228mm, the thickness of the base is 10mm, a concentric circular clamping groove is formed in the upper portion of the disc, the diameter of the circular clamping groove is 168mm, and the height of the circular clamping groove is 2 mm; the fixing screws 10 are steel cylinders, the diameter of each fixing screw is 5mm, the height of each fixing screw is 210mm, and the two fixing screws 10 are symmetrically distributed along the diameter of the disc and are 15mm away from the extension of the disc; the fixing nut 11 is matched with the fixing screw 10 and used for fixing the inner mold handle 9-1, the outer mold handle 9-2 and the sleeve handle 9-3.
The utility model relates to an embodiment, sleeve 4 is the cylindrical hollow section of thick bamboo of stainless steel, and inside diameter is 152mm, high 50mm, wall thickness 13mm, and there is a ring shape draw-in groove sleeve 4 bottom, and ring shape draw-in groove external diameter is 168mm, high 2mm, and a pair of sleeve handle 9-3 of 4 outer wall symmetries of sleeve installation, sleeve handle 9-3 are the cuboid iron plate, and length 30mm, wide 20mm, thick 5mm, the middle draw-in groove B who has a wide 5mm that opens.
The utility model discloses an embodiment, a section of thick bamboo inner cushion 5 is a cylindrical iron plate, and the diameter is 152mm, and thickness 50 mm.
In one embodiment of the present invention, the water seepage strip 13 is a strip formed by a permeable plate 16 and a waterproof pad 15, and is used as a water seepage and dehydration channel of the sample cylinder side wall, the strip has a length of 130mm, and the cross section of the strip is in an arc shape; the permeable plate 16 is a three-dimensional plastic drainage plate or permeable stone, has the thickness of 5mm and is positioned on the short side of the circular arc-shaped section; the water-proof cushion 15 is soft rubber, has the thickness of 3mm and is positioned on the long side of the circular arc-shaped section; the water permeable plate 16 and the water-proof cushion 15 are bonded together by high-viscosity sealing glue.
The utility model discloses an in the embodiment, solid fixed ring 14 is the stainless steel lantern ring for fixed infiltration strip piece 13 and appearance section of thick bamboo centre form 2, solid fixed ring 14 annular inside diameter is 168mm, high 20mm, thick 5 mm.
The utility model discloses an embodiment, the outer cushion 12 of section of thick bamboo is a cylindrical iron plate of taking draw-in groove A, and diameter 168mm, thickness 50mm, and draw-in groove A's cross sectional shape and distribution are the same with model section of thick bamboo centre form 1 recess, and draw-in groove A is convenient for break away from out the device with the sample.
The embodiment of the utility model provides a concrete operating procedure that is used for road bed soil to hit a kind of a real section of thick bamboo futilely wet cycle test as follows:
3, placing an outer cylinder cushion block 12 at the bottom of the sample cylinder filled with the roadbed soil sample 6, and sliding out the outer cylinder 2 of the sample cylinder from top to bottom by adopting a geotechnical test stripper to form an inner cylinder sample cylinder filled with the roadbed soil sample 6;
and 8, after the roadbed soil sample 6 is tested, firstly removing rock and soil mass by using a stripper, then unloading the fixing ring 14, finally unloading the water seepage strip 13, and finishing the test or carrying out next dry-wet cycle sample preparation.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood that the invention is not limited thereto, and that various modifications and changes can be made by those skilled in the art without departing from the principles of the invention.
Claims (9)
1. A compaction sample cylinder for a roadbed soil dry-wet cycle test is characterized by comprising a sample cylinder inner mold, a sample cylinder outer mold, a sample cylinder base, a sleeve, a cylinder inner cushion block, a water seepage strip block, a fixing ring and a cylinder outer cushion block, wherein the sample cylinder inner mold is a stainless steel cylindrical hollow cylinder, and a plurality of grooves are annularly and equidistantly distributed on the side wall of the sample cylinder inner mold; the sample cylinder outer mold is a stainless steel cylindrical hollow cylinder, and the inner side wall of the sample cylinder outer mold is distributed with convex edges with the same number and distribution as the grooves; the sample cylinder base consists of a base, a fixing screw rod and a fixing nut, the base is a disc made of stainless steel, and the upper part of the disc is provided with a concentric circular clamping groove; the sleeve is a cylindrical hollow cylinder made of stainless steel, and the bottom of the sleeve is provided with an annular clamping groove; the cylinder inner cushion block is a cylindrical iron block; the water seepage strip block is a strip block consisting of a water permeable plate and a water-isolating cushion and is used for a water seepage and dehydration channel on the side wall of the sample cylinder; the fixing ring is a stainless steel lantern ring and is used for fixing the water seepage strip block and the sample cylinder inner mold; the outer cylinder cushion block is a cylindrical iron block with a clamping groove A, and the cross section shape and distribution of the clamping groove A are the same as those of the grooves of the inner mold of the sample cylinder; the sample cylinder inner mold is placed in the circular clamping groove of the sample cylinder base, the cylinder inner cushion block is placed at the bottom of the sample cylinder inner mold, the sample cylinder outer mold is nested outside the sample cylinder inner mold in a one-to-one correspondence mode according to the convex edges and the grooves, and the sleeve is placed at the top of the sample cylinder outer mold to form a composite sample preparation cylinder; the sample cylinder base and the sleeve are detached, an outer cylinder cushion block is arranged at the bottom of the sample cylinder filled with the roadbed soil sample, and an outer cylinder of the sample cylinder is detached from top to bottom to form an inner model cylinder containing the roadbed soil sample; and (3) filling the water seepage strips into the grooves of the sample cylinder in the roadbed soil sample one by one, and then installing the fixing ring on the surface of the sample cylinder inner mold embedded with the water seepage strips to form a dry-wet cycle test sample cylinder containing the roadbed soil sample.
2. The compaction sample cylinder for the roadbed soil dry-wet cycle test according to claim 1, wherein the inner diameter of the sample cylinder inner mold is 152mm, the height is 170mm, the wall thickness is 8mm, 3-6 grooves are formed in the side wall at equal intervals in an annular shape, the height of each groove is 130mm, the cross section of each groove is in an annular arc shape, the length of the inner side arc is 5-10 mm, a pair of inner mold handles are symmetrically arranged on the outer portion of the side wall, each inner mold handle is a cuboid iron block, the length of each inner mold handle is 30mm, the width of each inner mold handle is 20mm, the thickness of each inner mold handle is 5mm, the distance from the end face is 2 cm.
3. The compaction sample cylinder for the roadbed soil dry-wet cycle test is characterized in that the inner diameter of an outer mold of the sample cylinder is 168mm, the height of the outer mold is 125mm, the wall thickness of the outer mold is 5mm, the height of a convex edge of the sample cylinder is 130mm, the cross section of the outer mold is in a circular arc shape, the length of an inner arc of the outer mold is 5-10 mm, a pair of outer mold handles are symmetrically arranged on the outer portion of the side wall, the outer mold handles are cuboid iron blocks, the length of each outer mold handle is 30mm, the width of each outer mold handle is 20mm, the.
4. The compaction sample cylinder for the roadbed soil dry-wet cycle test according to claim 1, wherein the outer diameter of the disc is 228mm, the thickness of the disc is 10mm, the upper part of the disc is provided with a concentric circular clamping groove, the diameter of the circular clamping groove is 168mm, and the height of the circular clamping groove is 2 mm; the fixing screws are steel cylinders, the diameter of each fixing screw is 5mm, the height of each fixing screw is 210mm, and the two fixing screws are symmetrically distributed along the diameter of the disc and are 15mm away from the extension of the disc; the fixing nut is matched with the fixing screw rod.
5. The compaction sample cylinder for the roadbed soil dry-wet cycle test is characterized in that the inner diameter of the sleeve is 152mm, the height of the sleeve is 50mm, the wall thickness of the sleeve is 13mm, the outer diameter of the circular clamping groove is 168mm, the height of the circular clamping groove is 2mm, a pair of sleeve handles are symmetrically arranged on the outer wall of the sleeve, the sleeve handles are cuboid iron blocks, the length of the sleeve handles is 30mm, the width of the sleeve handles is 20mm, the thickness of the sleeve handles is 5mm, and the middle of the sleeve handles is provided with a clamping groove B with the width of.
6. The compaction sample barrel for the roadbed soil dry-wet cycle test of claim 1, wherein the diameter of the cushion block in the barrel is 152mm, and the thickness of the cushion block in the barrel is 50 mm.
7. The compaction sample cylinder for the roadbed soil dry-wet cycle test according to claim 1, wherein the length of the water seepage strip block is 130mm, and the cross section of the water seepage strip block is in an annular arc shape; the permeable plate is a three-dimensional plastic drainage plate or permeable stone, is 5mm thick and is positioned on the short side of the circular arc-shaped section; the water-proof cushion is soft rubber, has the thickness of 3mm and is positioned on the long side of the circular arc-shaped section; the water permeable plate and the water-resisting pad are bonded into a whole through high-viscosity sealing glue.
8. The compaction cylinder for the roadbed soil dry-wet cycle test according to claim 1, wherein the annular inner diameter of the fixing ring is 168mm, the height is 20mm, and the thickness is 5 mm.
9. The compaction sample barrel for the roadbed soil dry-wet cycle test according to claim 1, wherein the diameter of the barrel outer cushion block is 168mm, and the thickness of the barrel outer cushion block is 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921074615.3U CN210665213U (en) | 2019-07-10 | 2019-07-10 | A hit a kind of sample section of thick bamboo for road bed soil is wet cycle test futilely |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921074615.3U CN210665213U (en) | 2019-07-10 | 2019-07-10 | A hit a kind of sample section of thick bamboo for road bed soil is wet cycle test futilely |
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| CN210665213U true CN210665213U (en) | 2020-06-02 |
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| CN201921074615.3U Active CN210665213U (en) | 2019-07-10 | 2019-07-10 | A hit a kind of sample section of thick bamboo for road bed soil is wet cycle test futilely |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296875A (en) * | 2019-07-10 | 2019-10-01 | 中交第二公路勘察设计研究院有限公司 | It is a kind of to hit real sample cylinder and operating method for subgrade soils wetting-drying test |
-
2019
- 2019-07-10 CN CN201921074615.3U patent/CN210665213U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296875A (en) * | 2019-07-10 | 2019-10-01 | 中交第二公路勘察设计研究院有限公司 | It is a kind of to hit real sample cylinder and operating method for subgrade soils wetting-drying test |
| CN110296875B (en) * | 2019-07-10 | 2024-04-16 | 中交第二公路勘察设计研究院有限公司 | Compaction sample cylinder for dry and wet cycle test of roadbed soil and operation method |
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