CN213813065U - Sample for mechanical test of contact surface of frozen soil and concrete, preparation cutting ring and sample box - Google Patents
Sample for mechanical test of contact surface of frozen soil and concrete, preparation cutting ring and sample box Download PDFInfo
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- CN213813065U CN213813065U CN202022594674.2U CN202022594674U CN213813065U CN 213813065 U CN213813065 U CN 213813065U CN 202022594674 U CN202022594674 U CN 202022594674U CN 213813065 U CN213813065 U CN 213813065U
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Abstract
The utility model discloses a sample for frozen soil and concrete contact surface mechanical test considering moisture migration under the condition of an open system, a preparation cutting ring and a sample box, wherein the preparation cutting ring comprises a cutting ring body with a sample preparation cavity, the sample preparation cavity is a cavity gradually reduced from one end of the cutting ring body to the other end along the horizontal direction, the two ends of the horizontal extension direction of the sample preparation cavity are respectively a first port and a second port, and the caliber of the first port is smaller than that of the second port; the sample comprises a soil sample part, a concrete sample part and a contact erosion surface formed by the surfaces of the soil sample part and the concrete sample part which are combined with each other and subjected to water supplementing and freezing; the sample box comprises a sliding part which is connected to the fixing part in a sliding mode, and the soil sample part and the concrete sample part are embedded on the fixing part and the sliding part. The utility model is simple in operation, simple to operate can comparatively truly simulate actual engineering situation, has guaranteed the accuracy nature of test result in the very big degree. The utility model is suitable for a civil engineering technical field.
Description
Technical Field
The utility model relates to a frozen soil and concrete contact surface mechanical test who considers moisture migration under the open system condition are with sample and preparation cutting ring and sample box.
Background
In the actual construction process of permafrost areas such as Tibet and the like in provinces, one of the major problems faced by the engineering is the problem of frozen soil. For construction engineering, frozen soil belongs to poor foundation soil, is easy to generate frost heaving and thaw sinking phenomena, and can cause certain damage to engineering structures once treatment measures are improper. At present, pile foundations are often adopted as a measure for preventing frost heaving and thaw collapse. Because the pile end soil is disturbed by the heat of the foundation and is easy to form the melt-sinking deformation, the friction pile is more in line with the actual engineering requirements and conditions in frozen soil areas. The freezing force between the pile foundation and the frozen soil is an important mechanical parameter which needs to be considered in the pouring of the engineering friction pile in the frozen soil area, and the strength value is obtained mainly through two modes, namely the field detection of the pile foundation and the indoor direct shear test. The on-site detection of the pile foundation is an effective means for obtaining the freezing force, but the on-site detection of the pile foundation has less engineering application due to the defects of higher cost, high operation difficulty and the like. At present, China researches on key action parts influencing the freezing damage of a structure foundation are directed to the contact surface of frozen soil and the foundation, and meanwhile, researches on the freezing strength of the contact surface of the frozen soil and concrete are gradually enriched. At present, most of researches on freezing strength of a contact surface of frozen soil and concrete are carried out on the basis of a sample prepared under a closed system environment condition, but the sample used in the test is greatly different from a real contact state under an open system condition in actual engineering.
Unlike conventional soil, the mechanical properties of the contact surface of the soil body of the frozen soil and a structure are complex, wherein the tensile strength and the shear strength of the frozen soil are main factors influencing the freezing, pulling and overturning of the foundation of the structure in a frozen soil area, and further experimental research is needed. At normal temperature, a soil body tensile test researches the tensile strength of the soil body, but not the tensile strength of the contact surface of the soil and a structure. The tensile test device does not have a uniform precision control requirement at normal temperature, and is formed by modifying other test devices, and if the modified test devices are used in a low-temperature environment, the problems of limited operation space, high manufacturing cost, difficulty in controlling precision and the like are often met, the operable range of the test is greatly limited, and many conventional geotechnical test devices are not suitable for being used in the low-temperature environment.
By reference to the relevant documents: a method for preparing the direct shear test specimen of concrete and frozen soil contact surface includes such steps as preparing the concrete blocks with diameter of 61.8mm and height of 20mm by cement mortar, connecting 2 cutting rings with diameter of 61.8mm and height of 20mm to form a high-sample cabin of 40mm, putting the concrete blocks with thickness of 20mm in the sample cabin, preparing concrete specimen according to water content, layering the concrete specimen in the sample cabin, and ejecting out the specimen by hydraulic jack. The method has several problems, firstly, the sample preparation method is the first sample preparation method, and the shear strength obtained by the test is mainly the static friction force of the contact surface; secondly, two samples with the height of 20mm are connected to form a high sample bin with the height of 40mm, if the connection is not good, soil is easy to leak from a connecting seam during sample pressing, so that the contact surface is larger, or the prepared sample is not easy to be put into a shear box; thirdly, the sample preparation method does not consider the influence of vibration on the concrete surface, which is not in accordance with the actual engineering situation.
Therefore, the sample preparation process for direct shear and tensile test of the contact surface of the frozen soil and the concrete, which is more scientific, more suitable for actual construction conditions and strong in operability and considers moisture migration, has certain theoretical significance and engineering value on the pile foundation engineering design in frozen soil areas.
SUMMERY OF THE UTILITY MODEL
The utility model provides a preparation cost is relatively lower, simple to operate, easy operation, can consider frozen soil of moisture migration and concrete contact surface's sample preparation cutting ring, sample and sample box for the mechanical test.
In order to achieve the above object, the utility model adopts the following technical scheme:
sample preparation cutting ring for frozen soil and concrete contact surface's mechanical test, including the cutting ring body that has the sample preparation chamber, the sample preparation chamber is the cavity of one end convergent to the other end by the cutting ring body along the horizontal direction, the both ends of sample preparation chamber horizontal extension direction are first port and second port respectively, and the bore of first port is less than the bore of second port.
Furthermore, the first port and the second port are respectively sealed by a first baffle and a second baffle which are detachably connected with the cutting ring body.
Further, the cutting ring body comprises two vertical wedge-shaped blocks which are arranged oppositely, and the sample preparation cavity is formed by surrounding the first baffle, the second baffle and the two wedge-shaped blocks.
Furthermore, outer connecting edges are respectively formed at one ends of the two wedge-shaped blocks close to the first baffle, and the first baffle is detachably connected with the two outer connecting edges through bolts.
Furthermore, the device comprises two ring cutter bodies which are spliced and fixed with each other, and the sample preparation cavities of the two ring cutter bodies are communicated through the mutual butt joint of the two first ports.
The utility model also discloses a sample for the mechanical test of frozen soil and concrete contact surface through sample preparation cutting ring preparation, including the shaping in the soil sample portion in the sample preparation chamber of one of two cutting ring bodies, and the shaping in another sample preparation chamber and with the concrete sample portion that the corresponding terminal surface of soil sample portion combines, and the surface formation contact erosion face of soil sample portion and concrete sample portion inter combination.
The utility model also discloses a special sample box of mechanical test of above-mentioned sample, including sliding connection the sliding part on the fixed part, soil sample portion and concrete sample portion inlay and locate on fixed part and sliding part.
Further, the fixed part is including constructing in the base upper end and along the first sample fixed block of vertical extension, first sample fixed block has the first chamber of establishing of inlaying that is used for the corresponding tip of fixed sample, and the first inner wall of establishing the chamber and the corresponding tip looks adaptation of sample of inlaying.
Further, the sliding part is including placing the second sample fixed block on the fixed part, the second sample fixed block has the second that is used for the corresponding tip of fixed sample and inlays and establish the chamber, and the second inlays the inner wall of establishing the chamber and the corresponding tip looks adaptation of sample.
Furthermore, a driving part for driving the sliding part to slide on the fixing part along the horizontal direction is assembled on the fixing part, and the output end of the driving part is detachably connected with the sliding part.
The utility model discloses owing to adopted foretell structure, it compares with prior art, and the technical progress who gains lies in: the utility model can simulate the construction sequence of firstly digging a foundation pit and then pouring concrete in actual engineering, and the sample preparation process is more in line with the formation process of the freezing force generated by original state soil foundation forms such as cast-in-place piles and frozen soil; or preparing a concrete sample firstly, and then preparing a sample preparation sequence of the frozen soil sample on the basis of the concrete sample, wherein the sample preparation sequence can simulate the process of generating freezing force between a large-excavation prefabricated foundation form and frozen soil, so that a sample finished product is more in line with the actual condition; the sample box used by the utility model can complete direct shearing and tensile test, and can effectively reduce the cost expenditure of a laboratory; to sum up, the utility model has the advantages of easy operation, simple to operate, the cost of manufacture is relatively lower, can simulate the moisturizing under the open system condition and freeze, and comparatively real simulation actual engineering situation is worth using widely.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural view of a sample preparation cutting ring according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the connection between two sample preparation cutting rings according to the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a sample according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a sample mounted in a sample box according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a fixing portion of a sample cartridge according to an embodiment of the present invention;
fig. 6 is a schematic structural view of the connection between the sample box and the driving portion according to the embodiment of the present invention.
Labeling components: 1-cutting ring body, 2-second baffle, 3-first baffle, 4-sample preparation cavity, 5-external connecting edge, 6-sample, 601-soil sample part, 602-concrete sample part, 603-contact erosion surface, 7-base, 8-first sample fixing block, 9-first embedded cavity, 10-second sample fixing block, 11-connecting plate and 12-U-shaped dowel bar.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the invention.
The utility model discloses a frozen soil and concrete contact surface's sample preparation cutting ring for mechanical test, it divide into two kinds: first, as shown in fig. 1, the cutting ring comprises a cutting ring body 1, a first baffle 3 and a second baffle 2, wherein the cutting ring body 1 is provided with a sample preparation cavity 4, the sample preparation cavity 4 is a cavity gradually reduced from one end of the cutting ring body 1 to the other end along the horizontal direction, two ends of the sample preparation cavity in the horizontal extension direction are respectively a first port and a second port, the caliber of the first port is smaller than that of the second port, and the first baffle 3 and the second baffle 2 are respectively connected to two ends of the cutting ring body 1 through a plurality of bolts and seal the first port and the second port. Preferably, the cutting ring body 1 comprises two vertical and opposite wedge-shaped blocks, and the sample preparation cavity 4 is formed by enclosing the first baffle 3, the second baffle 2 and the two wedge-shaped blocks. In order to facilitate the connection of the big ends of the wedge-shaped blocks and the first baffle 3, outer connecting edges 5 are respectively constructed at the ends, close to the first baffle 3, of the two wedge-shaped blocks, and the first baffle 3 is detachably connected with the two outer connecting edges 5 through bolts. The soil sample portion 601 of sample 6 was prepared in the present invention. Secondly, as shown in fig. 2, the present embodiment includes two cutting ring bodies 1 fixed to each other by splicing, i.e. the first baffle 3 is detached, the second baffle 2 is installed on each of the two cutting ring bodies 1, and the outer connecting edges 5 of the two cutting ring bodies 1 are aligned with each other, the two first ports are butted with each other and fixed by bolts, so that the sample preparation chambers 4 of the two cutting ring bodies 1 are communicated with each other, and a dumbbell-shaped chamber is formed.
The utility model also discloses a frozen soil and concrete contact surface's through sample preparation cutting ring preparation sample for the mechanical test, as shown in FIG. 3, it includes soil sample portion 601, concrete sample portion 602 and contact erosion face 603. The specific preparation method thereof is divided into two types,
firstly, the construction order of excavation foundation ditch back concreting in the simulation actual engineering earlier, the system appearance process more accords with the formation process that original state soil foundation forms such as bored concrete pile and frozen soil produced the frozen power, and the preparation step is as follows:
s1, according to the requirement of the test moisture content, soil body materials required by the direct shear and tensile test are prepared according to the corresponding proportion, and are mixed and stirred;
s2, firstly, the components in the figure 1 are utilized and placed on a platform, then the soil body prepared in the step S1 is filled into the sample preparation cavity 4 by a layered shaving method according to the compactness requirement, and a semi-dumbbell-shaped soil sample part 601 in the sample 6 of the contact surface of the soil body and the cast-in-place concrete is obtained;
s3, preparing concrete according to the preparation requirement of the concrete according to the corresponding proportion, and adding 3-10% of additive according to the cement dosage, wherein the additive is one or a combination of several of water reducing agent, early strength agent and antifreezing agent;
s4, removing the first baffle 3 in the step S2, butting another assembly shown in fig. 1 with the first baffle 3 removed and the assembly in the step S2 to form an assembly shown in fig. 2, then injecting the concrete obtained in the step S3 into the sample preparation cavity 4 on the other side of the soil sample part 601 in layers, and performing a tamping operation on the concrete to form different types of contact erosion surfaces 603 to form a dumbbell-shaped sample 6;
s5, sealing the dumbbell-shaped test sample 6 formed in the step S4, and curing the concrete at normal temperature for a certain period of time, wherein the curing period is 10-20 days;
and S6, after the dumbbell-shaped test sample 6 obtained in the step S5 meets the strength requirement, disassembling the assembly shown in the figure 2, and taking out the dumbbell-shaped test sample 6 to obtain the cast-in-place concrete and soil body contact surface test sample 6.
The second method is to prepare a sample of the concrete sample 602 first and then prepare a frozen soil sample on the basis of the concrete sample 602. The sample preparation sequence can simulate the process of generating freezing force between the large-excavation prefabricated foundation form and frozen soil, so that the finished product of the sample 6 is more in line with the actual condition, and the preparation steps are as follows:
a. preparing concrete materials according to the preparation requirement of concrete according to the corresponding proportion, adding 3-10% of additives according to the using amount of cement, forming and curing to prepare a semi-dumbbell-shaped concrete sample part 602 meeting the size, and polishing one side in contact with the concrete sample part 601 to uniform roughness;
b. the resulting semi-dumbbell shaped concrete sample 602 is assembled and clamped using the assembly shown in fig. 2;
c. according to the requirement of the test moisture content, soil body materials required by direct shear and tensile tests are prepared according to corresponding proportions and mixed well;
d. filling the soil mass obtained in the step S3 into the sample preparation cavity 4 by a layered shaving method according to the compactness requirement, so as to form a contact erosion surface 603 between the soil sample 601 and the concrete sample 602, and obtain the contact erosion surface 603.
And (3) sample 6 water replenishing and freezing: wrapping a sample 6 by two to three layers with a non-absorbent gauze, pouring soil with the same property as soil in the sample 6 into a sample 6 cylinder of a soil water vapor migration measuring device in a layered manner, placing the sample 6 in the middle of the soil in the sample 6 cylinder, compacting the soil filled in the sample 6 cylinder, inserting a temperature sensor from a preformed hole on the side surface of the sample 6 cylinder, covering a top plate, respectively communicating the top plate and a bottom plate with an upper cold bath system and a lower cold bath system, opening a temperature control box, and carrying out constant temperature treatment on the soil sample according to a set corresponding temperature; after the internal temperature of the soil sample reaches a set value, the temperature of the top plate is set to be negative temperature to perform one-way freezing on the sample 6, meanwhile, a Ma water supplement bottle water supplement system is used for supplementing water to the soil body, the water supplement liquid level of the Ma water supplement bottle water supplement system is flush with the bottom surface of the sample 6 in the soil body, the sample 6 is supplemented with water without pressure, and meanwhile, the temperatures of the top plate and the bottom plate are set to simulate water supplement freezing under the open system condition. The water content, compactness and particle grading property of the soil body in the soil body water vapor migration measuring device are the same as those of the soil sample contained in the dumbbell-shaped test sample 6, and error influence is avoided.
And (3) taking out the sample 6 after the water replenishing and freezing meet the test conditions, removing the gauze, performing water retention treatment on the sample 6 to prevent the water in the sample 6 from evaporating, then putting the sample into a temperature control chamber to adjust the temperature of the sample to keep the temperature at the required constant temperature, and obtaining the sample 6 which is used for frozen soil and concrete contact surface direct shear and tensile test and considers the water migration under the open system condition.
In view of the unable realization of the sample box of current integral staight scissors and tensile test device is to its sample box inside sample 6 moisturizing freezing in soil body steam migration measuring device, the utility model discloses a following can assemble the sample box different with current market, the convenient dress of piecing together of split type structure is outside at foretell sample 6, conveniently carries out staight scissors and tensile test. The utility model provides a sample 6 carries out the moisturizing and freezes and put into low temperature control room after the subsequent processing and adjust to constant temperature, carries out the sample box again and assembles under the low temperature condition on test sample 6, and what obtain at last considering moisture migration is used for frozen soil and prefabricated or cast-in-place concrete contact surface staight scissors and for tensile test sample 6. The frozen strength condition of the contact surface of the frozen soil and the concrete in the engineering of the actual frozen soil area can be simulated in the preparation process of the sample 6, and the test sample 6 has scientific basis and is suitable for the low-temperature direct shear test device for the contact surface of the existing soil and the structure.
The utility model discloses a special sample box of mechanical test of above-mentioned sample, as shown in fig. 4-5, including fixed part and sliding part, sliding part sliding connection is on the fixed part, and the soil sample portion 601 and the concrete sample portion 602 of sample 6 inlay respectively on fixed part and sliding part. Wherein, the fixed part is including constructing in base 7 upper end and along the first sample fixed block 8 of vertical extension, and this first sample fixed block 8 has the first chamber 9 of establishing of inlaying that is used for the corresponding tip of fixed sample 6, and the first inner wall of establishing the chamber 9 and the corresponding tip looks adaptation of sample 6 of inlaying. In order to facilitate the mounting and dismounting of the test sample 6, the fixing part adopts a split structure as shown in fig. 5, and two parts of the split structure are fastened through a plurality of bolt connections. The sliding part is including placing second sample fixed block 10 on the fixed part, and second sample fixed block 10 has the second that is used for the corresponding tip of fixed sample 6 and inlays and establish the chamber, and the second inlays and establishes the chamber and keep away from the first one end of establishing chamber 9 and pass through connecting plate 11 and seal, and the second inlays the inner wall of establishing the chamber and the corresponding tip looks adaptation of sample 6. Be equipped with on the fixed part and be used for driving the gliding drive division of sliding part on the fixed part along the horizontal direction, the drive division generally adopts the pneumatic cylinder, and the output of drive division is connected with U-shaped dowel steel 12, and it has the joint groove to be close to the first one end symmetry of inlaying and establishing chamber 9 at second sample fixed block 10, and two free ends of U-shaped dowel steel 12 are respectively through joint groove and second sample fixed block 10 fixed connection. Because the U-shaped dowel bar 12 directly acts on the second sample fixing block 10, the influence of additional errors caused by shearing borne by bolts due to the fixation from the side parts is well avoided. In addition, as shown in fig. 6, the height of the U-shaped dowel bar 12 is the same as that of the second sample fixing block 10, so that a horizontally uniform force is provided for the second sample fixing block 10, and the adverse situation that the second sample fixing block 10 is stressed at a single point to cause uneven stress and even topples over is avoided. The open end of the U-shaped dowel bar 12 can be clamped with the second sample fixing block 10, force transmission is guaranteed to be in the same direction, the U-shaped dowel bar 12 and the second sample fixing block 10 can be well fixed, and error influence caused by force action direction deviation is avoided.
In conclusion, the utility model has the advantages of simple structure, convenient operation, relatively low manufacturing cost, smooth and controllable sample preparation process, the test sample 6 meeting the standard requirement, and the size of the test sample 6 being selected according to the self test requirement; the utility model discloses a direct shear and for tensile test sample box still have simple to operate, reliable firm, the cost of manufacture is lower, advantages such as utilization ratio height, utilize this sample box can accomplish tensile and direct shear test, comparatively accord with actual conditions's laboratory test requirement. Adopt the utility model discloses the horizontal staight scissors that test sample 6 for the sample box of preparation is for assembling and tensile dual-purpose sample box compares with current horizontal unipolar tensile test device sample box, and when tensile test was done to the sample box that should assemble, the hangers at the anchor clamps that have saved current unidirectional tension device must and mould both ends adopt horizontal tensile test device, have overcome the dead weight influence of soil sample and the tip effect that current device produced to 6 both ends bonds of sample. The assembled sample box mainly utilizes the space of the sample 6 to improve the binding force when the soil body is stretched, eliminates the influence of the gravity effect caused by the vertical tensile test sample 6 and the sample box, and greatly simplifies the preparation process of the tensile sample 6; the assembled sample box is a direct-shearing and stretching dual-purpose sample box, a large amount of cost and complicated steps required by the traditional direct-shearing tensile test are omitted, the force application direction is changed, and the upper sample box is applied with corresponding normal pressure under the fixed condition of the lower sample box to perform a sample 6 direct-shearing test, so that the purpose of direct-shearing and stretching integration is fulfilled.
The utility model can simulate the construction sequence of firstly digging a foundation pit and then pouring concrete in actual engineering, and the sample preparation process is more in line with the formation process of the freezing force generated by original state soil foundation forms such as cast-in-place piles and frozen soil; or a sample preparation sequence of firstly preparing the concrete sample and then preparing the frozen soil sample on the basis of the concrete sample can be adopted, and the sample preparation sequence can simulate the process of generating freezing force between the large-excavation prefabricated foundation form and the frozen soil, so that the finished product of the sample 6 is more in line with the actual situation. Utilize the utility model discloses can consider frozen soil and concrete contact surface direct shear of moisture migration and tensile test's 6 preparation crafts of sample, comparatively true simulation actual engineering situation can effectively reduce the cost expenditure in laboratory, is worth using widely.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the protection of the claims of the present invention.
Claims (10)
1. Sample preparation cutting ring for the mechanical test of frozen soil and concrete contact surface, its characterized in that: including the cutting ring body that has the sample preparation chamber, the sample preparation chamber is the cavity of the one end convergent to the other end by the cutting ring body along the horizontal direction, the both ends of sample preparation chamber horizontal extension direction are first port and second port respectively, and the bore of first port is less than the bore of second port.
2. The sample preparation cutting ring for the mechanical test of the frozen soil-concrete contact surface according to claim 1, wherein: the first port and the second port are respectively sealed by a first baffle and a second baffle which are detachably connected with the cutting ring body.
3. The sample preparation cutting ring for the mechanical test of the frozen soil-concrete contact surface according to claim 2, wherein: the cutting ring body comprises two vertical wedge-shaped blocks which are arranged oppositely, and the sample preparation cavity is formed by surrounding the first baffle, the second baffle and the two wedge-shaped blocks.
4. The sample preparation cutting ring for the mechanical test of the frozen soil-concrete contact surface according to claim 3, wherein: and constructing outer connecting edges at one ends of the two wedge-shaped blocks close to the first baffle respectively, wherein the first baffle is detachably connected with the two outer connecting edges through bolts respectively.
5. The sample preparation cutting ring for the mechanical test of the frozen soil-concrete contact surface according to claim 1, wherein: the device comprises two cutting ring bodies which are spliced and fixed with each other, and the sample preparation cavities of the two cutting ring bodies are communicated through the mutual butt joint of the two first ports.
6. A sample for mechanical test of contact surface between frozen soil and concrete prepared by the sample preparation cutting ring according to claim 5, wherein the mechanical test comprises: the concrete cutting device comprises a soil sample part and a concrete sample part, wherein the soil sample part is formed in a sample preparation cavity of one of the two cutting ring bodies, the concrete sample part is formed in the other sample preparation cavity and is combined with the corresponding end face of the soil sample part, and the surfaces of the soil sample part and the concrete sample part which are combined mutually form a contact erosion surface.
7. A special sample box for mechanical test of the sample according to claim 6, characterized in that: including sliding connection in the sliding part on the fixed part, soil sample portion and concrete sample portion inlay and locate on fixed part and sliding part.
8. The mechanical test dedicated cartridge for a sample according to claim 7, characterized in that: the fixed part is including constructing in the base upper end and along the first sample fixed block of vertical extension, first sample fixed block has the first chamber of establishing of inlaying that is used for the corresponding tip of fixed sample, and the first inner wall of establishing the chamber and the corresponding tip looks adaptation of sample of inlaying.
9. The mechanical test dedicated cartridge for a sample according to claim 7, characterized in that: the sliding part comprises a second sample fixing block placed on the fixing part, the second sample fixing block is provided with a second embedding cavity used for fixing the corresponding end part of the sample, and the inner wall of the second embedding cavity is matched with the corresponding end part of the sample.
10. The mechanical test dedicated cartridge for a sample according to claim 7, characterized in that: the fixed part is provided with a driving part which is used for driving the sliding part to slide on the fixed part along the horizontal direction, and the output end of the driving part is detachably connected with the sliding part.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022594674.2U CN213813065U (en) | 2020-11-11 | 2020-11-11 | Sample for mechanical test of contact surface of frozen soil and concrete, preparation cutting ring and sample box |
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| CN202022594674.2U CN213813065U (en) | 2020-11-11 | 2020-11-11 | Sample for mechanical test of contact surface of frozen soil and concrete, preparation cutting ring and sample box |
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| CN213813065U true CN213813065U (en) | 2021-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117367920A (en) * | 2023-12-08 | 2024-01-09 | 山东尚远路桥工程机械有限公司 | Frozen soil consolidation experiment testing device and testing method |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117367920A (en) * | 2023-12-08 | 2024-01-09 | 山东尚远路桥工程机械有限公司 | Frozen soil consolidation experiment testing device and testing method |
| CN117367920B (en) * | 2023-12-08 | 2024-02-09 | 山东尚远路桥工程机械有限公司 | Frozen soil consolidation experiment testing device and testing method |
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