CN114112700A - Method for performing vacuum preloading experiment by using model barrel - Google Patents
Method for performing vacuum preloading experiment by using model barrel Download PDFInfo
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- CN114112700A CN114112700A CN202111335975.6A CN202111335975A CN114112700A CN 114112700 A CN114112700 A CN 114112700A CN 202111335975 A CN202111335975 A CN 202111335975A CN 114112700 A CN114112700 A CN 114112700A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000002474 experimental method Methods 0.000 title claims abstract description 19
- 239000002689 soil Substances 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 239000011148 porous material Substances 0.000 claims abstract description 15
- 238000005086 pumping Methods 0.000 claims abstract description 13
- 238000007405 data analysis Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 239000000523 sample Substances 0.000 claims description 16
- 239000004746 geotextile Substances 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000011160 research Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 210000002478 hand joint Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/18—Reclamation of land from water or marshes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0053—Production methods using suction or vacuum techniques
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- General Health & Medical Sciences (AREA)
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- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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Abstract
The invention relates to the field of foundation treatment research, and aims to provide a method for performing a vacuum preloading experiment by using a model barrel. The method comprises the following steps: checking each component and sealing of the model barrel device; installing a pore water pressure sensor, and placing the drain pipe and the drain pipe bracket in the barrel for fixing; adding an experimental soil sample into the barrel, and sealing the barrel cover by using a bolt; and starting a vacuum pumping system to solidify the soil body, transmitting data measured by the sensor to a computer, obtaining the pore water pressure in the soil body during the vacuum preloading experiment through data analysis, and measuring the soil body settlement through the scale marks on the barrel wall. The model barrel used by the invention has simple structure, low manufacturing cost and convenient use, can effectively improve the working efficiency and the experimental precision of the filling vacuum preloading, and improves the accuracy of the experiment.
Description
Technical Field
The invention relates to the field of foundation treatment research, in particular to a method for performing a vacuum preloading experiment by using a model barrel.
Background
Along with the development of national economy, the land resources are more and more in short supply, and particularly in economically developed areas such as coastal areas, a large number of harbor workers and seawalls are built, so that the contradiction between supply and demand of the land resources is more prominent. In recent years, the hydraulic filling engineering amount in engineering construction in coastal areas is increasing day by day, and the materials used in the hydraulic filling engineering at present are silt soil with higher water content. The foundation formed by the silt soil has high water content, large compressibility, certain fluidity and elasticity and almost no bearing capacity, so that certain measures need to be taken for the foundation soil to have certain strength so as to meet the subsequent construction requirements.
The vacuum preloading method is an effective soft soil foundation treatment method and has been widely applied to the soft soil foundation treatment. The method shortens the distance of water drained by soil body seepage by arranging vertical and horizontal drainage bodies in the soft soil, and enables the water in the soil body to flow out of the soil body under the action of negative pressure or super-static pore pressure by combining the modes of vacuum or stacking and the like, thereby achieving the purposes of consolidating the soil body and improving the strength of the soil body.
In order to meet the design parameter requirements of vacuum preloading in engineering, a reliable vacuum preloading experiment method needs to be provided, and no technical disclosure exists at present.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides a method for performing a vacuum preloading experiment by using a model barrel.
In order to solve the technical problem, the solution of the invention is as follows:
providing a method for performing a vacuum preloading experiment by using a model barrel, wherein the model barrel comprises a barrel body; the barrel body is cylindrical, and outward flanges are processed at the bottom and the top of the barrel body; the bottom of the barrel body is fixedly connected with a bottom plate, and the top of the barrel body is provided with a detachable circular barrel cover; the upper part of the side wall of the barrel body is provided with a water outlet; a plurality of through holes are formed in the side wall of the barrel body below the water outlet, and all the through holes are located on the same vertical straight line and used for placing sensors; the interior of the barrel body is provided with a vertically arranged drain pipe which is supported by a drain pipe bracket; the upper end opening of the water discharge pipe is sleeved in the downward opening of the hand-shaped joint, and the other end of the hand-shaped joint is connected with the steel wire hose; the steel wire hose penetrates through the water outlet and is connected with an external vacuum pumping system through the end part of the steel wire hose;
the method for the vacuum preloading experiment comprises the following steps:
checking whether all parts of the model barrel device are normal or not, whether the connection between the barrel bodies and the bottom plate is sealed or not, and whether a sealing ring is damaged or not, wherein if the parts are abnormal or damaged and leaked, the parts need to be replaced again to be used normally;
secondly, the pore water pressure sensor penetrates through the rubber plug, and a sensor connecting line is tightly connected with the rubber plug; then, the sensor probe is put into the barrel through the through hole, the corresponding position is fixed, and the through hole is plugged tightly by a rubber plug;
thirdly, connecting the drain pipe with the hole with a drain pipe support, binding the drain pipe with the drain pipe support by using a wire, and placing the drain pipe support in the barrel for fixing; connecting the upper opening end of the drain pipe to the opening end of the hand-shaped joint, and connecting the other end of the hand-shaped joint with the steel wire hose;
adding an experimental soil sample into the barrel, wherein the experimental soil sample does not pass through the steel wire hose, and an opening-reserved geotextile is attached to the soil sample; the other end of the steel wire hose sequentially penetrates through the geotextile opening and the water outlet, is connected with a vacuum pumping system outside the barrel body, and is hooped by a hoop; after a soil sample is added at the opening of the geotextile, the geotextile is bound on the steel wire hose by using a wire or an adhesive tape to prevent air leakage, and then a vacuum film is covered on the surface of the soil sample; laying a sealing washer on the flanging of the barrel body and aligning with the bolt hole, covering the barrel cover on the sealing washer and aligning with the bolt hole, and fastening the barrel cover by using a bolt to realize sealing;
step five, starting a vacuum pumping system to solidify the soil body, and discharging pore water from a drainage pipe and a steel wire hose in the process; and data measured by the sensor are transmitted to a computer, the pore water pressure in the soil body in the vacuum preloading experiment is obtained through data analysis, and the soil body settlement is measured through the scale marks on the barrel wall.
As a preferred scheme of the invention, a sensor fixing bracket is arranged on the lower surface of the barrel cover and used for fixing the lvdt displacement sensor to acquire the accurate displacement of the target point.
As the preferred scheme of the invention, a sealing ring and a vacuum film are arranged between the flanging at the top of the barrel cover and the barrel body so as to improve the integral air tightness of the device and ensure that the vacuum pressure can be maintained stably.
As a preferred scheme of the invention, a plurality of triangular reinforcing brackets are uniformly arranged between the flanging at the bottom of the barrel body and the side wall of the barrel body, and the bottom plate is fixedly connected with the flanging at the bottom of the barrel body through a plurality of bolts.
As a preferred scheme of the invention, a plurality of triangular reinforcing brackets are uniformly arranged between the flanging at the top of the barrel body and the side wall of the barrel body, and the barrel cover is fixedly connected with the flanging at the top of the barrel body through a plurality of bolts.
As the preferable scheme of the invention, two through holes are arranged on the side wall of the barrel body and are respectively positioned at the barrel body height positions of the outer wall of the model barrel from bottom to top 3/8 and 3/4, and the through holes are sealed by rubber plugs.
As the preferred scheme of the invention, the barrel body and the barrel cover are both made of organic glass plates, and the iron strips are hooped outside, so that the experimental process is convenient to observe and the strength can be ensured.
In a preferred embodiment of the present invention, the bottom plate is a steel plate.
As the preferable scheme of the invention, scales are etched on the outer wall of the barrel body and used for recording the displacement change of the soil body.
As the preferred scheme of the invention, the drain pipe is a tubular structure densely distributed with water seepage holes, and the section of the drain pipe is circular; or a tubular structure consisting of at least 3 drainage plates densely distributed with water seepage holes, and the section of the tubular structure is polygonal.
Compared with the prior art, the invention has the beneficial effects that:
1. the test method adopts the specially designed model barrel, and has the advantages of simple structure, low manufacturing cost and convenient use; the working efficiency and the experimental precision of the vacuum preloading of the filling can be effectively improved, and the accuracy of the test is improved.
2. The invention not only applies vacuum pressure to the experimental object, but also applies vacuum pressure to the soil body by changing the conditions of filling type, drain pipe type and the like, and carries out vacuum preloading test, thereby carrying out the research of the vacuum preloading test under different soil quality conditions.
3. The drainage pipe is fixed by the drainage pipe support, so that the drainage pipe support is convenient to install and disassemble, and can be independently arranged outside and then placed into a barrel.
4. The invention adopts a side water outlet mode, and the drain pipe, the hand joint and the steel wire hose are stably connected, so that the vacuum pumping and the discharge of percolate can be ensured; the design can improve the air tightness of the barrel body and effectively reduce the possibility of air leakage of the water outlet.
Drawings
FIG. 1 is a schematic view of a mold cylinder according to the present invention.
Fig. 2 is a top view of the mold bucket of fig. 1.
FIG. 3 is a detailed view of the connection between the barrel body and the bottom plate.
Fig. 4 is a detailed view of the through hole.
The reference numbers in the figures are: 1. 5, a screw hole; 2. 4, a triangular reinforcing bracket; 3, through holes; 5-1 bolt; 6, a bottom plate; 7 soil body; 8, a barrel body; 9 a drain pipe support; 10 water discharge pipes; 11, a barrel cover; 12 a water discharge port; 13, sealing rings; 14 a steel wire hose; 15 sensor fixing bracket.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
as shown in the figure, the model barrel for the vacuum preloading experiment comprises a barrel body 8, wherein the barrel body 8 is of a barrel shape, and outward flanges are processed at the bottom and the top of the barrel body. A plurality of triangular reinforcing plates 2 and 4 which are uniformly distributed along the circumferential direction of the flanging are respectively arranged between the flanging at the top and the bottom of the barrel body 8 and the side wall of the barrel body 8, so that the overall strength of the barrel body 8 is improved. A plurality of screw holes 1 and 5 are uniformly arranged along the circumferential direction of the upper flanging and the lower flanging, and a bottom plate 6 is fixedly connected with a barrel body 8 and a barrel cover 11 is fixedly connected with the barrel body 8 by a plurality of bolts 5 respectively.
The upper part of the side wall of the barrel body 8 is provided with a water outlet 12. A vertically arranged drain pipe 10 is arranged inside the barrel body 8 and is supported by a drain pipe support 9; the upper end opening of the drain pipe 10 is sleeved in the downward opening of the hand-shaped joint, and the other end of the hand-shaped joint is connected with the steel wire hose 10; the steel wire hose passes through the water outlet 12 and is connected with an external vacuum-pumping system by the end part of the steel wire hose; the design is used for realizing lateral vacuum pumping and removing pore water drawn during vacuum pumping. The drain pipe 10 can be a tubular structure densely distributed with water seepage holes, and the section of the drain pipe is circular; or a tubular structure consisting of at least 3 drainage plates densely distributed with water seepage holes, and the section of the tubular structure is polygonal.
Two through holes 3 are arranged on the side wall below the water outlet 12, are positioned on the same vertical straight line and are respectively positioned at the barrel body height positions of 3/8 and 3/4 from bottom to top on the outer wall of the model barrel. The through hole 3 is sealed by a rubber plug, and a sensor is arranged at the corresponding position to measure the pore water pressure. The lower surface of the barrel cover 11 is provided with a sensor fixing support 15 for fixing the lvdt displacement sensor to obtain the accurate displacement of a target point. Lvdt (linear Variable Differential transformer) is an abbreviation of linear Variable Differential transformer, a common type of electromechanical transducer that converts linear motion of a mechanically coupled object into a corresponding electrical signal. The invention observes the soil body settlement condition in the test process through the LVDT displacement sensor.
A sealing washer 13 and a vacuum film are arranged between the flanging at the top of the barrel body 8 and the barrel cover 11 so as to improve the integral air tightness of the device and ensure that the vacuum pressure can be maintained stably. The barrel cover 11 is movably connected with the barrel body 8, so that the soil body is conveniently demoulded after vacuum consolidation, the integrity of materials is ensured, and subsequent related experiments are conveniently carried out.
The barrel body 8 and the barrel cover 11 are made of organic glass plates, and iron strips are hooped outside, so that the experimental process is convenient to observe, and meanwhile, the strength can be guaranteed. Vertical scales are etched on the outer side of the barrel body 8 and used for recording the displacement change of the soil body. The bottom plate 6 is made of a thick steel plate. The size of the model barrel can be adjusted according to the actual experiment requirements, and the detail designs such as through holes, bolts and the like are additionally or additionally arranged or reduced, so that the model barrel is not limited to the manufacturing mode.
The vacuum preloading model testing method is operated by adopting the vacuum preloading model barrel device, and the device is used for measuring the pore water pressure and the soil body settlement in the soil body during the vacuum preloading experiment, so as to provide reference basis for the vacuum preloading testing scheme, and specifically comprises the following operations:
checking whether all parts of the model barrel device are normal or not, whether the connection between the barrel bodies 8 and the bottom plate is sealed or not, and whether the sealing ring 13 is damaged or not, if the parts are abnormal or damaged and leaked, replacing the parts again until the parts are normally used;
secondly, the pore water pressure sensor penetrates through the rubber plug, a sensor connecting line is tightly connected with the rubber plug, then the sensor probe is placed into the barrel through the through hole 3, the corresponding position is fixed, the hole is tightly plugged by the rubber plug, and an adhesive is added at the position where air leakage is possible;
step three, connecting the drain pipe 10 with the drain pipe support 9 and binding the drain pipe with a wire, placing the drain pipe support 9 in the barrel for fixing, butting an opening at the top end of the drain pipe 10 with a hand-shaped joint, and then connecting one end of the steel wire hose 14 with the hand-shaped joint;
and step four, adding an experimental soil sample into the barrel, wherein the experimental soil sample does not pass through the steel wire hose 14, and the soil sample is attached with a geotextile with a reserved opening. The other end of the steel wire hose 14 passes through the geotextile opening and the water outlet 12 in sequence and then is connected with a vacuum pumping system outside the barrel body 8, and is clamped by a clamp to prevent falling off or air leakage. After some soil samples are added at the openings of the geotextile, the geotextile is bound on the steel wire hose 14 by wires or adhesive tapes so as to prevent air leakage. Then covering a vacuum film, laying the sealing gasket 13 on the upper turned edge in a circle, and aligning the sealing gasket with the bolt hole; covering the barrel cover 11 on the sealing gasket, aligning the barrel cover with the bolt holes, and sealing the barrel by using bolts;
and step five, starting a vacuum pumping system to solidify the soil body 7 and simultaneously discharge pore water. And data measured by each sensor is transmitted to a computer, the change condition of pore water pressure in the soil body and the displacement condition of the soil body during the vacuum preloading experiment are obtained through data analysis, and the soil body settlement is measured through the scale marks on the barrel wall.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for carrying out vacuum preloading experiment by using a model barrel is characterized in that,
the model barrel comprises a barrel body; the barrel body is cylindrical, and outward flanges are processed at the bottom and the top of the barrel body; the bottom of the barrel body is fixedly connected with a bottom plate, and the top of the barrel body is provided with a detachable circular barrel cover; the upper part of the side wall of the barrel body is provided with a water outlet; a plurality of through holes are formed in the side wall of the barrel body below the water outlet, and all the through holes are located on the same vertical straight line and used for placing sensors;
the interior of the barrel body is provided with a vertically arranged drain pipe which is supported by a drain pipe bracket; the upper end opening of the water discharge pipe is sleeved in the downward opening of the hand-shaped joint, and the other end of the hand-shaped joint is connected with the steel wire hose; the steel wire hose penetrates through the water outlet and is connected with an external vacuum pumping system through the end part of the steel wire hose;
the method for the vacuum preloading experiment comprises the following steps:
checking whether all parts of the model barrel device are normal or not, whether the connection between the barrel bodies and the bottom plate is sealed or not, and whether a sealing ring is damaged or not, wherein if the parts are abnormal or damaged and leaked, the parts need to be replaced again to be used normally;
secondly, the pore water pressure sensor penetrates through the rubber plug, and a sensor connecting line is tightly connected with the rubber plug; then, the sensor probe is put into the barrel through the through hole, the corresponding position is fixed, and the through hole is plugged tightly by a rubber plug;
thirdly, connecting the drain pipe with the hole with a drain pipe support, binding the drain pipe with the drain pipe support by using a wire, and placing the drain pipe support in the barrel for fixing; connecting the upper opening end of the drain pipe to the opening end of the hand-shaped joint, and connecting the other end of the hand-shaped joint with the steel wire hose;
adding an experimental soil sample into the barrel, wherein the experimental soil sample does not pass through the steel wire hose, and an opening-reserved geotextile is attached to the soil sample; the other end of the steel wire hose sequentially penetrates through the geotextile opening and the water outlet, is connected with a vacuum pumping system outside the barrel body, and is hooped by a hoop; after a soil sample is added at the opening of the geotextile, the geotextile is bound on the steel wire hose by using a wire or an adhesive tape to prevent air leakage, and then a vacuum film is covered on the surface of the soil sample; laying a sealing washer on the flanging of the barrel body and aligning with the bolt hole, covering the barrel cover on the sealing washer and aligning with the bolt hole, and fastening the barrel cover by using a bolt to realize sealing;
step five, starting a vacuum pumping system to solidify the soil body, and discharging pore water from a drainage pipe and a steel wire hose in the process; and data measured by the sensor are transmitted to a computer, the pore water pressure in the soil body in the vacuum preloading experiment is obtained through data analysis, and the soil body settlement is measured through the scale marks on the barrel wall.
2. The method according to claim 1, wherein the lower surface of the barrel cover is provided with a sensor fixing bracket for fixing a lvdt displacement sensor to obtain accurate displacement of the target point.
3. The method of claim 1, wherein a sealing ring and a vacuum film are arranged between the flanges at the top of the barrel cover and the barrel body to improve the air tightness of the whole device and maintain the vacuum pressure stable.
4. The method according to claim 1, wherein a plurality of triangular reinforcing brackets are uniformly arranged between the flanging at the bottom of the barrel body and the side wall of the barrel body, and the bottom plate is fixedly connected with the flanging at the bottom of the barrel body through a plurality of bolts.
5. The method according to claim 1, wherein a plurality of triangular reinforcing brackets are uniformly arranged between the flanging at the top of the barrel body and the side wall of the barrel body, and the barrel cover is fixedly connected with the flanging at the top of the barrel body through a plurality of bolts.
6. The method of claim 1, wherein the two through holes are formed in the side wall of the barrel body and are respectively located at the barrel body height of the outer wall of the model barrel from bottom to top 3/8 and 3/4, and the through holes are sealed by rubber plugs.
7. The method of claim 1, wherein the barrel body and the barrel cover are made of organic glass plates, and iron strips are hooped outside, so that the experimental process is convenient to observe, and meanwhile, the strength can be guaranteed.
8. The method of claim 1, wherein the base plate is a steel plate.
9. The method of claim 1, wherein the outer wall of the barrel is provided with a scale for recording the change of soil displacement.
10. The method of claim 1, wherein the drain pipe is a tubular structure densely packed with water penetration holes, and having a circular cross-section; or a tubular structure consisting of at least 3 drainage plates densely distributed with water seepage holes, and the section of the tubular structure is polygonal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111335975.6A CN114112700A (en) | 2021-11-12 | 2021-11-12 | Method for performing vacuum preloading experiment by using model barrel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111335975.6A CN114112700A (en) | 2021-11-12 | 2021-11-12 | Method for performing vacuum preloading experiment by using model barrel |
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| CN114112700A true CN114112700A (en) | 2022-03-01 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211773953U (en) * | 2019-12-24 | 2020-10-27 | 浙江工业大学 | Model barrel device for indoor vacuum preloading model test |
| CN113026827A (en) * | 2019-12-24 | 2021-06-25 | 浙江工业大学 | Model barrel device for indoor vacuum preloading model test |
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- 2021-11-12 CN CN202111335975.6A patent/CN114112700A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211773953U (en) * | 2019-12-24 | 2020-10-27 | 浙江工业大学 | Model barrel device for indoor vacuum preloading model test |
| CN113026827A (en) * | 2019-12-24 | 2021-06-25 | 浙江工业大学 | Model barrel device for indoor vacuum preloading model test |
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