CN215493067U - Test tank structure for detecting shrinkage performance of slag soil fluidized backfill material - Google Patents
Test tank structure for detecting shrinkage performance of slag soil fluidized backfill material Download PDFInfo
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- CN215493067U CN215493067U CN202121419427.7U CN202121419427U CN215493067U CN 215493067 U CN215493067 U CN 215493067U CN 202121419427 U CN202121419427 U CN 202121419427U CN 215493067 U CN215493067 U CN 215493067U
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- backfill material
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Abstract
The utility model relates to the technical field of earthwork engineering, in particular to a test tank structure for detecting shrinkage performance of a slag soil fluidized backfill material. The water in the slag-soil fluidized backfilling material can be absorbed from the lower part through the action of the overhead layer and the lower porous plate, the shrinkage change of the slag-soil fluidized backfilling material can be conveniently measured through the upper porous plate which is horizontally arranged, the shrinkage performance of the slag-soil fluidized backfilling material is reflected by the ratio of the height change of the slag-soil fluidized backfilling material to the initial height of the slag-soil fluidized backfilling material, and the engineering technicians can conveniently detect the shrinkage performance of the slag-soil fluidized backfilling material.
Description
Technical Field
The utility model relates to the technical field of earthwork engineering, in particular to a test groove structure for detecting shrinkage performance of a flowing backfill material of muck.
Background
The residue soil is one kind of construction waste. According to the municipal construction waste management regulation, the construction waste refers to the waste soil, waste materials and other wastes generated in the process of building, rebuilding, expanding and dismantling various buildings, structures, pipe networks and the like of construction units and house decoration and finishing of residents.
The slag soil fluidizing backfill material is a backfill material with high fluidity produced by taking slag soil, water, a bonding agent and an additive as main raw materials, and the bonding agent can form certain strength after being cured and is suitable for backfilling various ditches, grooves and the like.
Due to the characteristic of high water content, the material can shrink and deform in the processes of water evaporation and material solidification. In practical use, the shrinkage of the material can cause cracking inside the material, and after cracking, the strength and the rigidity are obviously reduced, so that the support of the upper structure and the protection of the lower structure are at safety risk; on the other hand, under the action of environmental rainwater and the like, water enters cracks and causes scouring, and the backfill materials can be seriously damaged. Therefore, the shrinkage performance of the slag fluidized backfill material is important for the service performance of the material.
At present, a standard test method exists for testing the shrinkage performance of cement-based materials such as cement concrete, cement stabilized macadam and the like, and the test method is specifically described in cement and cement concrete test regulations (JTG E30). However, the cement concrete shrinkage test method cannot be used for testing the slag fluidized backfill material because:
(1) the residue soil fluidized backfill material has strong flowability and high water content, and the shrinkage of the residue soil fluidized backfill material in a water loss stage is not negligible. And the strength in the early dehydration stage is not formed and cannot be tested in a conventional manner.
(2) The slag flowing backfill material is mainly used for backfilling the groove, the material is directly injected into the groove, and the condition cannot be considered in conventional experiments because the water content of the material is high and the water loss at the bottom cannot be ignored through the osmosis effect.
For the above reasons, it is necessary to develop a test tank specially for shrinkage performance test of the muck fluidized backfill material.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a test groove structure for detecting the shrinkage performance of a slag-soil fluidized backfill material, and aims to solve the problem that a test groove specially used for detecting the shrinkage performance of the slag-soil fluidized backfill material is lacked in the prior art.
The utility model discloses a test tank structure for detecting shrinkage performance of a slag soil fluidizing backfill material, which is realized in the way, and comprises a tank body, a permeable plate and an overhead layer, wherein the permeable plate and the overhead layer are arranged in the tank body, the overhead layer is arranged at the lower part of the tank body, the permeable plate comprises an upper permeable plate and a lower permeable plate, the lower permeable plate is arranged above the overhead layer, the slag soil fluidizing backfill material is poured between the lower permeable plate and the upper permeable plate, and the upper permeable plate and the lower permeable plate are horizontally arranged.
Furthermore, a boss is arranged on the inner side wall of the groove body, the overhead layer is arranged on the boss, and the upper surface of the overhead layer is horizontally arranged; and filter paper is laid above the overhead layer, and the lower permeable plate is arranged above the filter paper.
Furthermore, a containing cavity is arranged below the overhead layer, and a vent hole is formed in the side wall of the containing cavity.
Furthermore, a supporting rod is arranged on the outer side wall of the groove body, the supporting rod extends outwards and horizontally from the groove body, and a dial indicator frame is arranged on the supporting rod and used for clamping the dial indicator.
Furthermore, the meter frame comprises a vertical support and a horizontal support, the vertical support is vertically arranged, the horizontal support is horizontally arranged, the vertical support is connected with the supporting rod, the horizontal support is clamped on the vertical support, and the dial indicator is clamped on the horizontal support.
Furthermore, the outer side wall of the groove body is provided with a track groove in an encircling manner, the tail end of the supporting rod is provided with a sliding block, the sliding block is clamped in the track groove, and the sliding block is connected with the track groove in a sliding manner.
Further, the track groove comprises an inner groove and an outer groove, the inner groove is communicated with the outer groove, and the width of the inner groove in the longitudinal direction is larger than that of the outer groove in the longitudinal direction.
Furthermore, an annular boss is arranged on the outer side wall of the groove body, the annular boss surrounds the groove body, and the annular boss is arranged below the track groove; the head end of the supporting rod is connected with an inclined strut, and the lower end of the inclined strut is abutted against the annular boss.
Further, the overhead layer is a rigid net structure, and the upper surface of the rigid net structure is horizontally arranged.
Further, an oven is arranged on the outer side of the tank body, the oven is provided with a temperature controller used for adjusting the temperature in the oven, an air inlet and an air outlet are formed in the oven, the air entering from the air inlet is heated to enable the temperature in the oven to reach a set temperature, and the air outlet discharges hot air to take away certain heat and moisture.
Compared with the prior art, the test groove structure for detecting the shrinkage performance of the slag-soil fluidized backfill material, provided by the utility model, has the advantages that the moisture in the slag-soil fluidized backfill material can be absorbed from the lower part under the action of the overhead layer and the lower water permeable plate, the shrinkage change of the slag-soil fluidized backfill material can be conveniently measured by horizontally arranging the upper water permeable plate, the shrinkage performance of the slag-soil fluidized backfill material is reflected by the ratio of the height change of the slag-soil fluidized backfill material to the initial height of the slag-soil fluidized backfill material, and engineering technicians can conveniently detect the shrinkage performance of the slag-soil fluidized backfill material.
Drawings
FIG. 1 is a schematic cross-sectional view of a test cell configuration for detecting shrinkage of a residue fluidized backfill material according to the present invention;
fig. 2 is an enlarged schematic cross-sectional view of a track groove and a supporting rod sliding block of the test groove structure for detecting shrinkage performance of a slag fluidized backfill material provided by the utility model.
Description of reference numerals:
100-groove body, 110-track groove, 120-annular boss and 130-inclined strut;
200-an overhead layer, 210-a cavity, 211-a vent hole;
310-lower permeable plate, 320-upper permeable plate;
410-transverse bracket, 420-longitudinal bracket, 430-supporting rod and 431-sliding block;
500-dial indicator; 600-sample;
700-oven, 710-air outlet, 720-air inlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-2, a preferred embodiment of the present invention is shown.
A test groove structure for detecting sediment soil fluidization backfill material shrinkage can, including the cell body, locate porous disk and the built on stilts layer in the cell body, the lower part of cell body is located to the built on stilts layer, and the porous disk includes porous disk and lower porous disk, and the built on stilts layer top is located to lower porous disk, and sediment soil fluidization backfill material sample is pour under between porous disk and the last porous disk, goes up the porous disk and is horizontal arrangement with lower porous disk.
According to the test tank structure for detecting the shrinkage performance of the slag-soil fluidized backfill material, the moisture in a slag-soil fluidized backfill material sample can be absorbed from the lower part under the action of the overhead layer and the lower permeable plate, the shrinkage change of the slag-soil fluidized backfill material sample can be conveniently measured by horizontally arranging the upper permeable plate, the shrinkage performance of the slag-soil fluidized backfill material sample is reflected by the ratio of the height change of the slag-soil fluidized backfill material sample to the initial height of the slag-soil fluidized backfill material sample, and engineering technicians can conveniently detect the shrinkage performance of the slag-soil fluidized backfill material sample.
In the test process, along with the dehydration of the slag fluidized backfill material sample, the whole slag fluidized backfill material sample shrinks, the height of the upper permeable plate above the sample also decreases, the height variation of the upper permeable plate is measured to reflect the height variation of the whole slag fluidized backfill material sample, and the ratio of the height variation to the initial height of the slag fluidized backfill material sample reflects the shrinkage performance of the slag fluidized backfill material sample in a period of time.
The groove body can adopt a cylindrical model or a square cylindrical model and the like, the groove wall of the groove body is vertically arranged, so that the height variation of the slag fluidized backfill material sample during shrinkage can be accurately measured, and for example, a PVC pipe or a steel pipe with the inner diameter of phi 100mm and the height of 200mm is adopted.
The inner side wall of the groove body can be provided with a vertical graduated scale, so that the integral initial height of the slag fluidized backfill material sample can be directly obtained in the test process.
The permeable plate can adopt permeable stone, the diameter of the permeable plate is less than or equal to the inner diameter of the tank body, for example, the permeable stone with the diameter of phi 100mm and the thickness of 5mm is adopted by the upper permeable plate and the lower permeable plate. The permeable stone is a solid expression form of ecological permeable concrete, and is a mixed material which is formed by mixing cement, water and a permeable concrete reinforcing agent with high-quality aggregates with the same grain diameter or discontinuous grading and has a certain porosity. The permeable stone has the appearance and the texture of stone, has the functions of water permeating and filtering, adopts the principle of interfacial tension for destroying water, has very compact surface and is not easy to be blocked by dust. The shoes are not wet when raining and not frozen when snowing, and can be recycled.
When the sample of the slag soil fluidized backfill material shrinks, the upper permeable plate descends in the groove body, and the upper permeable plate is rigid, so that the height variation of the sample of the slag soil fluidized backfill material can be conveniently measured by a dial indicator. Go up the porous disk and adopt the permeable stone, have the function of the drainage of permeating water to the permeable disk of moisture in the sediment fluidization backfill material sample distributes away, is convenient for simulate the dehydration condition of sediment fluidization backfill material sample among the reality.
The inner side wall of the groove body is provided with a boss, the overhead layer is arranged on the boss, and the upper surface of the overhead layer is horizontally arranged. The overhead layer can adopt a rigid net-shaped structure, such as a net-shaped structure made of a steel wire mesh and aluminum alloy strips, and the upper surface of the rigid net-shaped structure is horizontally arranged, so that the lower permeable plate is horizontally arranged. On one hand, the permeable plate and the slag fluidized backfilling material sample above the permeable plate can be supported, the sample is not easy to deform, on the other hand, moisture in the slag fluidized backfilling material sample can permeate to the lower part of the overhead layer, and the water loss condition of the slag fluidized backfilling material in reality is well simulated.
And filter paper is laid above the overhead layer, and the lower permeable plate is arranged above the filter paper. The water in the sample of the slag fluidized backfill material can be diffused to the environment through the filter paper, and the solid particles can not permeate the filter paper, so that the solid particles are prevented from being lost, and the measurement result is prevented from being influenced.
A containing cavity is arranged below the overhead layer, and a vent hole is arranged on the side wall of the containing cavity. So that the air exchange between the cavity and the outside air occurs, and the moisture in the sample of the slag fluidized backfill material is easy to permeate into the cavity. The side wall of the containing cavity is also provided with a drain pipe, and the drain pipe is provided with a drain valve for opening or closing the drain valve. If the water in the cavity is excessive, the water can be drained from the drain pipe.
The outer side wall of the groove body is provided with a supporting rod, the supporting rod extends outwards from the groove body in a horizontal mode, and the supporting rod is provided with a dial indicator frame for clamping the dial indicator, so that the dial indicator is located at a position to be detected. The support rod can be fixed on the outer side wall of the groove body, or the support rod can rotate around the periphery of the groove body on the outer side wall of the groove body. The meter frame can be fixedly connected with one end of the support rod, or a clamping fastener is arranged at one end of the support rod, and the meter frame is clamped on the support rod.
The dial indicator comprises a dial indicator frame and a dial indicator, wherein the dial indicator frame comprises a vertical support and a horizontal support, the vertical support is vertically arranged, the horizontal support is horizontally arranged, the vertical support is connected with a supporting rod, the horizontal support is clamped on the vertical support, and the dial indicator is clamped on the horizontal support. Because the shrinkage of the slag fluidized backfill material sample is small, the common graduated scale is not accurate enough, and the shrinkage can be accurately measured to 0.01mm by adopting a dial indicator, so that the effect is good.
A clamping piece is arranged between the transverse support and the longitudinal support of the watch frame, the clamping piece clamps the transverse support in the horizontal direction, the clamping piece clamps the longitudinal support in the vertical direction, and a locking knob is arranged on the clamping piece; when the locking knob is loosened, the clamping piece slides up and down on the longitudinal support; when the locking knob is locked, the position of the clamping piece on the longitudinal support is locked. Thereby making the lateral support highly adjustable on the longitudinal support.
When the dial indicator is used, the dial indicator is clamped on a special indicator frame or other firm supports, the dial indicator is prevented from being clamped in an unstable place, the measuring result is prevented from being inaccurate, or the dial indicator is prevented from being broken.
The dial indicator works on the principle that the small linear movement of the measuring rod caused by the measured dimension is amplified through gear transmission and changed into the rotation of a pointer on a dial, so that the measured dimension is read. The dial indicator is a measuring instrument which changes the linear displacement of a measuring rod into the angular displacement of a pointer by utilizing the transmission of a rack gear or a lever gear.
Usually, the dial of the dial indicator is printed with 100 graduation marks, i.e. each graduation value corresponds to 0.01mm of movement of the measuring rod. If 1000 equal divisions are printed on the circular dial, each division value is 0.001 mm, and the measuring tool is called a dial indicator.
The dial indicator can be connected with a data analyzer, manual reading is not needed, data can be acquired and analyzed by data analyzer software, each measurement result can be calculated, and the measurement efficiency can be greatly improved. For example, the data analyzer can automatically draw a deformation-time curve according to the time interval measured by the dial indicator and the data of the shrinkage of the slag fluidized backfill material sample measured each time, so that the water loss shrinkage condition and the performance of the slag fluidized backfill material sample can be clear.
Preferably, the outer side wall of the groove body is provided with a track groove in an encircling manner, the tail end of the supporting rod is provided with a sliding block, the sliding block is clamped in the track groove, and the sliding block is connected with the track groove in a sliding manner. The die-pin slides along the track groove of cell body lateral wall, drives vertical support and percentage table and treats that the check point removes to another and wait to detect the point, and is very convenient to need wait that the check point sets up a plurality of percentage tables in a plurality of and monitor the high cost that brings.
Specifically, the track groove on the outer side wall of the groove body is of a structure with a wide inner part and a narrow outer part, the track groove comprises an inner groove and an outer groove, the inner groove is communicated with the outer groove, and the longitudinal width of the inner groove is larger than that of the outer groove. The sliding block is convenient to clamp in the rail groove and cannot fall out. For example, the slider is in a turned-over T-shaped structure, the wide edge of the slider is clamped in the inner groove of the track groove, the long edge of the slider is abutted against the outer groove of the track groove, and the wide edge of the slider is stably clamped in the inner groove of the track groove due to the action of gravity. The width of the wide edge of the slide block is slightly smaller than the width of the inner groove of the track groove in the longitudinal direction. The T-shaped sliding block can be formed by combining two L-shaped sliding blocks and is convenient to install in the track groove. Or the upper part of the track groove is provided with a mounting hole, the slide block is inserted into the track groove from the mounting hole, the mounting hole is provided with a stop block, the stop block is rotatably connected above the mounting hole, and the inner side wall of the stop block is provided with a buckle which is clamped with the buckling part at the corresponding position of the mounting hole. When the sliding block needs to be installed, the stop block on the installation opening is opened, and the sliding block is inserted into the track groove from the installation opening; after the slider is installed, the stop block is buckled at the position of the installation opening, so that the integrity of the track groove is ensured.
The outer side wall of the groove body is provided with an annular boss which is arranged around the cylindrical groove body, and the annular boss is arranged below the track groove; the head end of the supporting rod is connected with an inclined strut, and the lower end of the inclined strut is abutted against the annular boss. The outer side walls of the support rod, the inclined strut and the groove body form a stable triangular support, so that the stability of the longitudinal support on the support rod is ensured.
Preferably, an oven is arranged on the outer side of the groove body, a temperature controller is arranged in the oven and used for setting the temperature in the oven, an air outlet is arranged at the top of the oven, and an exhaust fan is arranged at the position of the air outlet and can take away hot air and moisture in the oven. The air inlet is formed in the lower position of the side wall of the oven, the fan is arranged at the position of the air inlet, air can enter the oven conveniently, and air entering the oven is heated by the heating module of the oven firstly, so that the temperature in the oven reaches the set temperature. The groove body is arranged in the oven, the temperature in the oven is set to be 40 ℃, and the exhaust fan is turned on, so that the situation that the residue soil fluidized backfill material loses water quickly in a high-temperature environment in summer can be simulated really. The temperature controller can adjust the temperature in the oven, the exhaust fan has 0-5 gear, and the wind power is different in different gears. Different temperatures are set for the oven, and the gear size of the exhaust fan is adjusted, so that the situation of rapid water loss of the slag soil fluidized backfill material under different conditions can be simulated, and the shrinkage performance of the slag soil fluidized backfill material can be effectively monitored.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A test groove structure for detecting sediment soil fluidization backfill material shrinkage performance, a serial communication port, include the cell body, locate permeable plate and built on stilts layer in the cell body, the built on stilts layer is located the lower part of cell body, the permeable plate includes permeable plate and lower permeable plate, the permeable plate is located down built on stilts layer top, sediment soil fluidization backfill material pour down the permeable plate with go up between the permeable plate, go up the permeable plate with the permeable plate is horizontal arrangement down.
2. A test tank structure for detecting shrinkage of a slag-soil fluidized backfilling material according to claim 1, wherein a boss is arranged on the inner side wall of the tank body, the overhead layer is arranged on the boss, and the upper surface of the overhead layer is arranged horizontally; and filter paper is laid above the overhead layer, and the lower permeable plate is arranged above the filter paper.
3. A test cell structure for testing shrinkage of a residue soil fluidized backfill material according to claim 2, wherein a cavity is arranged below the elevated layer, and vent holes are arranged on the side wall of the cavity.
4. A test tank structure for detecting shrinkage of a slag-soil fluidized backfilling material according to claim 3, wherein a supporting rod is arranged on the outer side wall of the tank body, the supporting rod horizontally extends outwards from the tank body, and a dial gauge is arranged on the supporting rod and used for clamping a dial gauge.
5. A test cell structure for testing shrinkage of a residue fluidized backfill material according to claim 4, wherein the gauge stand comprises a vertically arranged longitudinal support and a horizontally arranged lateral support, the longitudinal support is connected with the support rod, the lateral support is clamped on the longitudinal support, and the dial gauge is clamped on the lateral support.
6. A test groove structure for detecting shrinkage of a slag-soil fluidized backfilling material according to claim 5, wherein a track groove is annularly arranged on the outer side wall of the groove body, a slide block is arranged at the tail end of the supporting rod and clamped in the track groove, and the slide block is slidably connected with the track groove.
7. A test slot structure for detecting shrinkage performance of slag fluidized backfill material according to claim 6, wherein the rail slot comprises an inner slot and an outer slot, the inner slot is communicated with the outer slot, and the width of the inner slot in the longitudinal direction is larger than that of the outer slot in the longitudinal direction.
8. A test groove structure for detecting shrinkage of a slag-soil fluidized backfilling material according to claim 7, wherein an annular boss is arranged on the outer side wall of the groove body, the annular boss is arranged around the groove body, and the annular boss is arranged below the track groove; the head end of the supporting rod is connected with an inclined strut, and the lower end of the inclined strut is abutted against the annular boss.
9. A test cell structure for testing shrinkage performance of a slag fluidized backfill material according to any one of claims 1-8, wherein the overhead layer is a rigid mesh structure, and the upper surface of the rigid mesh structure is arranged horizontally.
10. A test tank structure for detecting shrinkage of a slag-soil fluidized backfilling material according to any one of claims 1 to 8, wherein an oven is arranged outside the tank body, the oven is provided with a temperature controller for adjusting temperature in the oven, the oven is provided with an air inlet and an air outlet, the temperature in the oven reaches a set temperature after air entering from the air inlet is heated, and the air outlet discharges hot air to take away certain heat and moisture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121419427.7U CN215493067U (en) | 2021-06-24 | 2021-06-24 | Test tank structure for detecting shrinkage performance of slag soil fluidized backfill material |
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| CN202121419427.7U CN215493067U (en) | 2021-06-24 | 2021-06-24 | Test tank structure for detecting shrinkage performance of slag soil fluidized backfill material |
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