CN105738010B - Penetration type soil pressure cell method for embedding and device in deep layer weak soil - Google Patents
Penetration type soil pressure cell method for embedding and device in deep layer weak soil Download PDFInfo
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- CN105738010B CN105738010B CN201610128697.XA CN201610128697A CN105738010B CN 105738010 B CN105738010 B CN 105738010B CN 201610128697 A CN201610128697 A CN 201610128697A CN 105738010 B CN105738010 B CN 105738010B
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- injection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0006—Plastics
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Soil Sciences (AREA)
- General Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a kind of penetration type soil pressure cell method for embedding and its embedded device, device forms rectangular frame by two injection bars, connection cross bar and injection head, injection bar is fixed on connection cross bar by nut, soil pressure cell external member is fixed in rectangular frame, the both ends of crosspiece bar are inserted in the aperture on injection bar, guide rod is fixed on connection crossbar center by nut, and injection head is injected the bottom of injection bar by the column plunger close to both ends, can come off naturally.Its method for embedding is：Embedded device is assembled, prepares guide rod, injection is carried out using static(al) equipment, timely spreading guide rod, until predetermined depth of penetration, then using manpower or static(al) equipment extracting apparatus, injection head, crosspiece bar are come off in soil layer, and soil pressure cell is stayed in soil layer and tested.The present invention is applied to the earth pressure test of deep layer Soft Soil Layer, and the raising to Geotechnical Engineering measuring technology is significant with improving.
Description
Technical field
The present invention relates to Geotechnical Engineering testing field, is more particularly to a kind of penetration type soil pressure cell method for embedding, simultaneously
A kind of penetration type soil pressure cell inbuilt device is further related to, its assembling fixation of soil pressure cell, fixed suitable for deep layer weak soil middle level
Position is buried and data monitoring.
Background technology
The pressure that soil pressure cell is applied to the soil body inside the works such as long-term measurement roadbed, side slope, dam, tunnel, earth embankment should
Power.Soil pressure sensor is buried in native face and the soil body with monitoring practice, being typically employed in meet in geotechnical engineering construction, to carry out
The Monitoring on Earth Pressure of body structure surface and inside soil body, and required data are obtained by corresponding data acquisition equipment.
The method for embedding of conventional soil pressure sensor has：Dossal method, extrusion method, ejection method and boring method.This is several to bury
If the equal comparative maturity of technology, is widely used in engineering.Building enclosure meets the embedded conventional dossal method of native face soil pressure cell, is
By soil pressure sensor by the position layouted, first on the nylon cloth of one fixed width, then by the nylon cloth with sensor
Paving is hung on the surface relevant position of steel reinforcement cage, is hung in together in groove in company with steel reinforcement cage, positions cast coagulation in backward groove
Soil, with the rising of concrete surface, by means of the lateral thrust of concrete, the nylon cloth for hanging over surface of reinforcing cage will be spread together with soil pressure biography
Sensor presses to the wall of groove together.Extrusion method can be ejected soil pressure cell by air rammer, be close to the soil body so as to be surveyed
Examination.Boring method is usually used in soil pressure sensor in the soil body and buried, i.e., first carries out holing with slurry wall protection in the soil body, and by soil pressure
Sensor is fixed on the thin-wall channel or steel reinforcement cage of customization, then by soil pressure sensor with thin-wall channel or steel reinforcement cage together
Prescribed depth position in embedment drilling, then fine sand is backfilled in the borehole, the test of soil pressure is carried out after fine sand consolidation.
However, these conventional method for embedding are applied to middle hard stratum and rock stratum mostly, for deep layer weak soil, it may be difficult into
Hole, conventional method for embedding can not be implemented.In addition, ejection subtraction unit is complicated, equipment and component are fragile during burying, and bury
Installation cost is higher；Thin-wall channel or steel reinforcement cage are larger with respect to the rigidity of the soil body, exist and soil lateral after being embedded to the soil body
The problem of uncoordinated, thus the precision of earth pressure test result is had a certain impact；The price of thin-wall channel or steel reinforcement cage compared with
Height, therefore the economy of method for embedding is not strong；Soil pressure sensor need to be welded at the construction field (site), and operation is not easy, and installation effectiveness is low
Under.
Therefore, it is the testing requirement that adapts to soil stress filed in deep layer weak soil, solves soil pressure cell in deep layer weak soil and bury
Rhetoric question is inscribed, it is necessary to transformed with method existing test device, proposes a kind of penetration type soil pressure cell inbuilt device and side
Method, it is ensured that experiment exploitativeness is strong, and achievement is accurately and reliably.
The content of the invention
The purpose of the present invention is to be the provision of a kind of penetration type soil pressure cell method for embedding suitable for deep layer Soft Soil Layer,
Easy to implement the method reliable, advantage is notable, can effectively meet the direction and location test of soil pressure in deep layer Soft Soil Layer, the scope of application
Extensively.
Another object of the present invention is to be the provision of a kind of penetration type soil pressure cell suitable for deep layer Soft Soil Layer to bury
If device, embedded device Simple And Practical, assembling is convenient, and the direction and location that can effectively meet soil pressure in deep layer Soft Soil Layer is surveyed
Examination, test data accuracy are high.
In order to realize above-mentioned purpose, the present invention uses following technical measures：
A kind of penetration type soil pressure cell method for embedding, its step are：
Step 1：Assemble penetration type soil pressure cell inbuilt device（The present invention）, required soil pressure cell external member will be measured and put
Wherein, soil pressure cell external member is fixed in a device by 4 ~ 5 crosspiece bars；
Step 2：According to measurement position depth（5~20m）Need, prepare respective numbers（7 ~ 22）Guide rod, by
A piece guide rod is fixed on penetration type soil pressure cell inbuilt device；
Step 3：In test site, since earth's surface, using static(al) equipment（Such as CLD-3 type static penetrometers）Passed through
Enter, when guide rod is close in complete injection stratum, access next guide rod in time, until reaching predetermined depth of penetration（5~
20m）；
Step 4：Guide rod is extracted using manpower or static(al) equipment, so as to extract the present apparatus, when a guide rod is extracted completely
During ground, the guide rod is unloaded, continues to extract to injection bar and extracts completely.Injection head, crosspiece bar are starting to extract in device
When come off naturally from injection bar, stayed in together with soil pressure cell external member in soil layer；
Step 5：The test of soil pressure is carried out using data collecting instrument according to testing requirement, is obtained different in deep layer weak soil
The soil pressure of depth soil layer.
A kind of penetration type soil pressure cell inbuilt device, it includes：Injection bar, cross bar is connected, injection head, crosspiece bar, is oriented to
Bar.It is characterized in that：Penetration type soil pressure cell inbuilt device forms rectangle frame by two injection bars, connection cross bar and injection head
Frame, two injection bars are fixed in the circular hole on connection cross bar both sides by nut respectively, and two injection bars are parallel placed side by side, pass through
Enter 4 ~ 5 apertures of spacing about 9 ~ 11cm on bar（2 ~ 4mm of aperture）It is horizontal relative.Connection cross bar is inserted at the top of soil pressure cell external member
Intermediate channel is intraoral, and soil pressure cell external member bottom is inserted in injection centriciput notch.The both ends of same crosspiece bar are respectively inserted in two
In aperture at injection bar sustained height, adjacent crosspiece bar is respectively facing the plane both sides that two injection bars are formed, crosspiece
Bar can come off naturally from the aperture of injection bar.Guide rod by nut be fixed on connection crossbar center circular hole in, guide rod with
Injection bar is reversely fixed in connection cross bar.Injection head injects the bottom of two injection bars by two column plungers close to both ends
Portion, injection head can come off naturally from injection bar.
Described injection bar is that common static sounding bar is process（Those skilled in the art can prepare）, injection
Pole length about 48 ~ 52cm, is hollow tubular, and front end outer side has length about 4 ~ 6cm silk mouth, have on the inside of end length about 4 ~
6cm silk mouth.Preceding terminal filament mouth diameter of section is slightly less than shaft diameter, and preceding terminal filament mouth can be mutually threaded into end silk mouth
Connection.Open aperture 4 ~ 5, small pitch of holes about 9 ~ 11cm, aperture about 2 ~ 4mm vertically on the bar wall below preceding terminal filament mouth.
Described guide rod is identical with injection bar gauge lattice, and difference is that bar wall does not open aperture, and 5 ~ 20 guide rods pass through preceding
Terminal filament mouth is lengthened with end silk mouth with being threaded into be connected, and soil pressure cell data wire passes from guide rod.
Described connection cross bar is thin slice steel plate, and circular hole is opened in center, and two circular holes are symmetrically opened on the both sides of central circular hole, three
The center of circle of circular hole is respectively positioned on connection rail surface center line, and notch insertion is opened in three circular holes, and the diameter of each circular hole omits
More than terminal filament mouth diameter of section before injection bar and guide rod, it is slightly less than shaft diameter, width of rebate is less than Circularhole diameter.
Described crosspiece bar is finer wire, and both ends tilt vertically upward, and length is slightly larger than the spacing of two injection bars, diameter
It is slightly less than the aperture of aperture on injection bar.
Described injection head is steel strip, and length is equal to the olo of two injection bars, and both ends are distinguished above it
Two column plungers are protruded, notch, two column plunger center spacing and two injection bars are provided between two column plungers
Center spacing is identical, is the strip edge of a knife below injection head.Injection head section is taper, and cone is downward.
Described soil pressure cell external member is by two groove profile plastic strips, plastics connection strap, soil pressure cell, soil pressure cell fixture structure
Into soil pressure cell fixture is made up of A with fixture bloom and B with fixture bloom, and soil pressure cell fixture passes through spiral shell with plastics connection strap
Nail is fixed between groove profile plastic strip.
The present invention compared with prior art, has advantages below and effect：
1）It can not have to drilling in advance using the present apparatus, so that it may soil pressure cell is embedded in soil layer and tested, it is time saving and energy saving,
It is cost-effective, while the easy collapse hole that drilled in weak soil is it also avoid, the difficult problem of pore-forming；
2）The present apparatus uses tear-away formula injection head with method, resistance when reducing injection with extracting, realizes penetration type
Soil pressure cell inbuilt device injection easily and fast and extraction；
3）The present apparatus is by setting crosspiece bar so that soil pressure cell is not easy during embedded, keeps stable, to
Up to after desired depth soil layer, position, and accurate positioning are conveniently adjusted, is not easy off normal.
4）The present apparatus is packaged protection in embedded and test process, by soil pressure cell data wire, improves instrument and survives
Rate, save time saving.
The present apparatus overcomes conventional apparatus and method in deep layer Soft Soil Layer the defects of actual operation with method, has
There are above-mentioned advantage and effect, and complete test by experimental design to obtain as the desired result in accompanying drawing 8, test data are accurate
Really, stably.Meanwhile the present apparatus can use standardized way to produce and assemble, simple efficient, operation is easy, has considerable work
Journey puts into practice Expected Results and significant economic advantages, and the raising to Geotechnical Engineering measuring technology is significant with improving.
Brief description of the drawings
Fig. 1 is a kind of penetration type soil pressure cell inbuilt device front view；
Fig. 2 is a kind of penetration type soil pressure cell inbuilt device left view；
Fig. 3 is a kind of connection bar structure schematic diagram；
Fig. 4 is a kind of injection bar structural representation；
Fig. 5 is a kind of injection head front view；
Fig. 6 is a kind of injection head left view；
Fig. 7 is a kind of injection head top view,
Fig. 8 is that a kind of penetration type soil pressure cell inbuilt device designs test result.
In figure：
1-injection bar, 2-connection cross bar, 3-injection head, 4-crosspiece bar, 5-guide rod, 6-nut.
Embodiment
Embodiment 1：
A kind of penetration type soil pressure cell method for embedding, its step are：
Step 1：Penetration type soil pressure cell inbuilt device is assembled, required soil pressure cell external member will be measured and be placed on wherein, led to
4 or 5 crosspiece bars 4 are crossed to fix soil pressure cell external member in a device；
Step 2：According to measurement position depth（5 or 8 or 10 or 14 or 17 or 20m）Need, prepare respective numbers（7 or 10
Or 13 or 16 or 18 or 20 or 22）Guide rod 5, first guide rod 5 is fixed on penetration type soil pressure cell inbuilt device
On；
Step 3：In test site, since earth's surface, injection is carried out using static(al) equipment such as CLD-3 types static penetrometer,
When guide rod 5 is close in complete injection stratum, next guide rod 5 is accessed in time, until reaching predetermined depth of penetration（5 or 7 or
9 or 11 or 13 or 15 or 18 or 20m）；
Step 4：Guide rod 5 is extracted using manpower or static(al) equipment, so as to extracting apparatus, when a guide rod 5 is extracted completely
During ground, the guide rod 5 is unloaded, continues to extract to injection bar 1 and extracts completely.Injection is first 3 in device, crosspiece bar 4 is starting
Come off from injection bar 1 during extraction, stayed in together with soil pressure cell external member in soil layer naturally；
Step 5：The test of soil pressure is carried out using data collecting instrument according to testing requirement, is obtained different in deep layer weak soil
The soil pressure of depth soil layer.
Embodiment 2：
The present invention is described in further detail below according to accompanying drawing：
It can be seen from Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of penetration type soil pressure cell inbuilt device, it is by injection bar
1st, cross bar 2, injection first 3 are connected, crosspiece bar 4, guide rod 5 form.It is characterized in that：Penetration type soil pressure cell inbuilt device is by two
Root injection bar 1, connection cross bar 2 and injection first 3 form rectangular frame, and it is horizontal that two injection bars 1 are fixed on connection by nut 6 respectively
In the circular hole on the both sides of bar 2, two injection bars 1 are parallel placed side by side, and spacing about 9 or 10 or 11cm's is 4 or 5 small on injection bar 1
Hole（Aperture 2 or 3 or 4mm）Small hole horizontal is relative.It is intraoral that the connection intermediate channel of cross bar 2 is inserted at the top of soil pressure cell external member, soil pressure
It is intraoral that box external member bottom is inserted in first 3 intermediate channel of injection.The both ends of same crosspiece bar 4 are respectively inserted in two sustained heights of injection bar 1
In the aperture at place, adjacent crosspiece bar 4 is respectively facing the plane both sides that two injection bars 1 are formed, and crosspiece bar 4 can be from injection bar
Come off naturally in 1 aperture.Guide rod 5 is fixed in the connection central circular hole of cross bar 2 by nut 6, guide rod 5 and injection bar 1
Reversely it is fixed in connection cross bar 2.The bottom of two injection bars 1 is injected in injection first 3 by two column plungers close to both ends,
Injection first 3 can come off naturally from injection bar 1.
Soil pressure cell external member is made up of two groove profile plastic strips, plastics connection strap, soil pressure cell, soil pressure cell fixture, soil
Pressure cell fixture is made up of A with fixture bloom and B with fixture bloom, and the A in soil pressure cell fixture is with fixture bloom and B with fixture
Bloom and plastics connection strap are fixed between groove profile plastic strip by screw.
Injection bar 1 is that common static sounding bar is process, the length of injection bar 1 about 48 or 49 or 50 or 51 or 52cm,
For hollow tubular, front end outer side has length about 4 or 5 or 6cm silk mouth, has length about 4 or 5 or 6cm silk on the inside of end
Mouthful.Preceding terminal filament mouth diameter of section is slightly less than shaft diameter, and preceding terminal filament mouth mutually can be connected with end silk mouth with being threaded into.
It is some that aperture is opened on bar wall below preceding terminal filament mouth vertically, small pitch of holes about 9 or 10 or 11cm, aperture about 2 or 3 or 4mm.
Guide rod 5 is identical with the specification of injection bar 1, and difference is that bar wall does not open aperture, passes through preceding terminal filament mouth with guide rod 5 more
Lengthened with end silk mouth with being threaded into be connected, soil pressure cell data wire passes from guide rod 5.
Connection cross bar 2 is thin slice steel plate, and circular hole is opened in center, and two circular holes, three circular holes are symmetrically opened in the both sides of central circular hole
The center of circle be respectively positioned on the connection centre of surface line of cross bar 2, notch insertion is opened in three circular holes, the diameter of each circular hole is slightly larger than
Terminal filament mouth diameter of section before injection bar 1 and guide rod 5, is slightly less than shaft diameter, and width of rebate is less than Circularhole diameter.
Crosspiece bar 4 is finer wire, and both ends tilt vertically upward, and length is slightly larger than the spacing of two injection bars 1, and diameter is smaller
In the aperture of aperture on injection bar 1.The both ends of crosspiece bar 4 can be easily inserted in the aperture on injection bar 1, but do not touch injection
The inwall of bar 1.
Injection first 3 is steel strip, and length is equal to the olo of two injection bars 1, and both ends protrude respectively above it
There are two column plungers, notch, two column plunger center spacing and two centers of injection bar 1 are provided between two column plungers
Spacing is identical, and first 3 lower section of injection is the strip edge of a knife.First 3 section of injection is taper, and cone is downward.Injection first 3 is close in injection
Injection bar 1, by the downward penetrating power of its transmission, due to the presence of first 3 edge of a knife of injection, reduce penetration resistance.Pulled out upper
During, due to soil body resistance, injection first 3 is convenient to come off from whole device, reduces and pulls out resistance.
Claims (6)
1. a kind of penetration type soil pressure cell inbuilt device, its composition includes：Injection bar（1）, connect cross bar（2）, injection head（3）,
Crosspiece bar（4）, guide rod（5）, it is characterised in that：Penetration type soil pressure cell inbuilt device is by two injection bars（1）, connection cross bar
（2）With injection head（3）Form rectangular frame, two injection bars（1）Pass through nut respectively（6）It is fixed on connection cross bar（2）Both sides
Circular hole in, two injection bars（1）It is parallel placed side by side, injection bar（1）Upper 9 ~ 11cm of spacing hole horizontal is relative, soil pressure cell
Connection cross bar is inserted at the top of external member（2）Intermediate channel is intraoral, and soil pressure cell external member bottom is inserted in injection head（3）Intermediate channel is intraoral, together
One crosspiece bar（4）Both ends be respectively inserted in two injection bars（1）In aperture at sustained height, adjacent crosspiece bar（4）Respectively
Towards two injection bars（1）The plane both sides formed, crosspiece bar（4）Can be from injection bar（1）Aperture in come off naturally, be oriented to
Bar（5）Pass through nut（6）It is fixed on connection cross bar（2）In central circular hole, guide rod（5）With injection bar（1）The reverse company of being fixed on
Connect cross bar（2）In, injection head（3）Two injection bars are injected by two column plungers close to both ends（1）Bottom, injection head
（3）Can be from injection bar（1）It is middle to come off naturally.
A kind of 2. penetration type soil pressure cell inbuilt device according to claim 1, it is characterised in that：Described injection bar
（1）With guide rod（5）For common static sounding bar, 48 ~ 52cm of length is hollow tubular, and front end outer side has 4 ~ 6cm of length
Silk mouth, there is on the inside of end 4 ~ 6cm of length silk mouth, preceding terminal filament mouth diameter of section is less than shaft diameter, preceding terminal filament mouth with it is last
Terminal filament mouth is mutually connected with being threaded into, injection bar（1）The vertical perforate 4 ~ 5 on the bar wall below preceding terminal filament mouth, aperture 2 ~
4mm。
A kind of 3. penetration type soil pressure cell inbuilt device according to claim 1, it is characterised in that：Described connection cross bar
（2）For thin slice steel plate, circular hole is opened in center, and two circular holes are symmetrically opened on the both sides of central circular hole, and the center of circle of three circular holes is respectively positioned on company
Connect cross bar（2）On centre of surface line, notch insertion is opened in three circular holes, the diameter of each circular hole is slightly larger than injection bar（1）With
Guide rod（5）Preceding terminal filament mouth diameter of section, is slightly less than shaft diameter, and width of rebate is less than Circularhole diameter.
A kind of 4. penetration type soil pressure cell inbuilt device according to claim 1, it is characterised in that：Described crosspiece bar
（4）For finer wire, both ends tilt vertically upward, and length is more than 2 injection bars（1）Spacing, diameter is less than injection bar（1）Upper hole
Aperture.
A kind of 5. penetration type soil pressure cell inbuilt device according to claim 1, it is characterised in that：Described injection head
（3）For steel strip, length is equal to two injection bars（1）Olo, above it both ends have two column plungers respectively,
Notch, two column plunger center spacing and two injection bars are provided between two column plungers（1）Center spacing is identical, injection
Head（3）Lower section is the strip edge of a knife, injection head（3）Section is taper, and cone is downward.
6. a kind of method for embedding of penetration type soil pressure cell inbuilt device described in claim 1, its step are：
Step 1：Assemble penetration type soil pressure cell inbuilt device, will measure needed for soil pressure cell external member be placed on wherein, by 4 ~
5 crosspiece bars（4）Soil pressure cell external member is fixed in a device；
Step 2：According to measurement position 5 ~ 20m of depth, the guide rod of preparation respective numbers 7 ~ 22（5）, by first guide rod
（5）It is fixed on penetration type soil pressure cell inbuilt device；
Step 3：In test site, since earth's surface, injection, guide rod are carried out using static(al) equipment（5）Close to complete injection,
Access next guide rod（5）, until reaching predetermined 5 ~ 20m of depth of penetration；
Step 4：Guide rod is extracted using manpower or static(al) equipment（5）, extracting apparatus, a guide rod（5）When extracting ground, unload
The lower guide rod（5）, continue to extract to injection bar（1）Extract completely, injection head in device（3）, crosspiece bar（4）Starting to extract
When from injection bar（1）It is middle to come off naturally, stayed in together with soil pressure cell external member in soil layer；
Step 5：The test of soil pressure is carried out using data collecting instrument according to test, obtains different depth soil layer in deep layer weak soil
Soil pressure.
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| CN201610128697.XA CN105738010B (en) | 2016-03-07 | 2016-03-07 | Penetration type soil pressure cell method for embedding and device in deep layer weak soil |
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| CN201610128697.XA CN105738010B (en) | 2016-03-07 | 2016-03-07 | Penetration type soil pressure cell method for embedding and device in deep layer weak soil |
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| CN105738010B true CN105738010B (en) | 2018-04-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645641B (en) * | 2016-12-07 | 2021-01-12 | 中国电力科学研究院 | Auxiliary equipment for placing experiment sensor of geotechnical centrifuge |
| CN107574808A (en) * | 2017-10-30 | 2018-01-12 | 上海市城市建设设计研究总院（集团）有限公司 | Soil pressure sensor embedded device and its method for embedding |
| CN108120645B (en) * | 2017-12-22 | 2024-01-05 | 上海勘察设计研究院(集团)股份有限公司 | Soil pressure in-situ testing device and testing method thereof |
| CN107859019B (en) * | 2017-12-26 | 2023-09-22 | 天津城建大学 | Three-dimensional soil pressure box complete application device and implementation method thereof |
| CN108425355B (en) * | 2018-04-19 | 2024-01-23 | 中国建筑第八工程局有限公司 | Soil pressure gauge embedding device and method |
| CN110219294B (en) * | 2019-07-15 | 2024-05-17 | 深圳市勘察测绘院(集团)有限公司 | Be suitable for soil pressure cell of weak soil district and bury device |
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