CN110485395A - A kind of measurement Eccentric Load acts on the experimental rig and its test method of lower vertical earth pressure distribution - Google Patents
A kind of measurement Eccentric Load acts on the experimental rig and its test method of lower vertical earth pressure distribution Download PDFInfo
- Publication number
- CN110485395A CN110485395A CN201910684016.1A CN201910684016A CN110485395A CN 110485395 A CN110485395 A CN 110485395A CN 201910684016 A CN201910684016 A CN 201910684016A CN 110485395 A CN110485395 A CN 110485395A
- Authority
- CN
- China
- Prior art keywords
- bearing body
- vertical load
- load
- hole
- outlet pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 15
- 238000010998 test method Methods 0.000 title description 5
- 239000002689 soil Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 230000007423 decrease Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 240000002853 Nelumbo nucifera Species 0.000 claims description 4
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 4
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000011017 operating method Methods 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 230000002459 sustained effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Soil Sciences (AREA)
- Analytical Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The experimental rig of lower vertical earth pressure distribution is acted on the invention discloses a kind of measurement Eccentric Load and method, the experimental rig include model casing and vertical load-bearing body；The vertical load-bearing body inner space is constituted by n-1 equal thickness demarcation plate is evenly spaced at n compartment, and each compartment is equipped with the piston that can be slided up and down in the compartment along inner wall to match with compartment；The demarcation plate is closely connect with wall in the vertical load-bearing body, and the bottom of each compartment is equipped with identical hole；The model casing bottom corresponds to the vertical load-bearing body hole location and is equipped with the through-hole to match with described hole；The external graduated outlet pipe of transparence band of the hole, the outlet pipe is connected to the vertical load-bearing body constitutes U-shaped linker.The present invention can measure the soil pressure force value and produced corresponding settling amount that structures under the conditions of any geology are subject to, while avoid the positional shift occurred during embedding soil pressure cell, influence measurement accuracy.
Description
Technical field
The present invention relates to Geotechnical Engineering fields more particularly to a kind of measurement Eccentric Load to act on lower vertical earth pressure point
The experimental rig and its test method of cloth.
Background technique
With the development of urban construction, the pattern of the underground space is varied with scale, and surrounding enviroment are also different, this
It wherein just include foundation pit, the case where there are Eccentric Loads for shield tunnel side.How it is accurately measured during tunneling
Vertical earth pressure, so that effectively Strengthening Tunnel structure, controls ground settlement.
Soil pressure cell commonly used to measure soil pressure is mainly made using pressure sensor, can be with using soil pressure cell
The distribution situation that Eccentric Load acts on lower vertical earth pressure is measured, when measuring vertical earth pressure, soil pressure cell level is embedded in
In barricade to be measured, but in actual use, due to the extruding by the soil body, soil pressure cell tilts to deflection, so that
The vertical earth pressure inaccuracy of measurement.
The experimental rig of measurement vertical earth pressure is less at present, and is squeezed soil pressure cell position by the soil body and shift
The problem of be difficult to solve always, it is therefore necessary to research and develop the test dress that a kind of measurement Eccentric Load acts on lower vertical earth pressure distribution
It sets.
Summary of the invention
To overcome defect present in background technique, the present invention provides a kind of lower vertical earth pressure of measurement Eccentric Load effect
The experimental rig and its test method of distribution.
Technical proposal that the invention solves the above-mentioned problems is:
A kind of experimental rig for measuring Eccentric Load and acting on lower vertical earth pressure distribution, including model casing and setting are described
Vertical load-bearing body in model casing；
The vertical load-bearing body surrounding and bottom are formed by steel plate splicing, and encapsulation process is passed through in stitching portion, described perpendicular
It is constituted to load-bearing body inner space by n-1 equal thickness demarcation plate is evenly spaced at n compartment, n is at least 1, and each compartment is equal
Equipped with the piston that can be slided up and down in the compartment along inner wall to match with compartment；The demarcation plate and described
Wall closely connects in vertical load-bearing body, and the bottom of each compartment is equipped with the hole of same diameter；The model box body bottom
Portion corresponds to the vertical load-bearing body hole location and is equipped with the through-hole to match with described hole；The external transparence band of the hole
Graduated outlet pipe, the outlet pipe are connected to and constitute U-shaped linker, the outlet pipe with the vertical load-bearing body
It is tightly connected with the vertical load-bearing body.
Further, the hardness of the steel plate at least can will not generate change under the soil lateral pressure effect by around
Shape.
Further, the demarcation plate carries out solder design with wall in the vertical load-bearing body.
Further, joint steel pipe, hole of the joint steel pipe from vertical load-bearing body bottom are equipped at the hole
Through-hole along the model casing bottom of box is to being externally provided with extended segment, the joint steel pipe and the detachable company of the outlet pipe
It connects.
Further, the joint steel pipe is preferably threadedly coupled with the outlet pipe.
Further, the angle point of the model casing bottom four is equipped with four foot props, it is therefore an objective to convenient for bearing the lotus of experimental rig
Carry and reserve to outlet pipe certain space.
Further, the separator material uses rigid sheet, it is therefore an objective to prevent the effect by water pressure at different depth
And it is deformed.
Further, the joint steel pipe and the hole sealing welding, it is therefore an objective to prevent drainage.
Further, the outlet pipe is ABS material, and surface has range, " 0 " graduation mark of range and vertical load-bearing body bottom
Portion maintains an equal level.
Further, the piston is wrapped up with wall contact portion in vertical load-bearing body with sealing ring.
The operating method that measurement Eccentric Load of the present invention acts on the experimental rig of lower vertical earth pressure distribution is specific
The following steps are included:
Step 1, sustained water injection inside Xiang Shuxiang load-bearing body, until full of entire vertical load-bearing body；
Step 2, piston is covered, excessive moisture is discharged, has contacted piston base just with the water surface, top is just at vertical
Load-bearing body top side location, and guarantee that head height is identical inside the corresponding outlet pipe of each compartment；
Step 3, it uniformly bankets to be layered inside model casing, persistently bankets at least making the intracorporal piston of vertical load-bearing
Start gradually to decline；
Step 4, along with the decline of piston, the water inside vertical load-bearing body is extruded into outlet pipe, the outlet pipe
In head height be gradually increasing；
Step 5, the SEA LEVEL VARIATION for observing the outlet pipe reads the initial water level of each outlet pipe in the stop timing of banketing；
Step 6, to soil body surface heap weighting material, influence under analog bias load action to subway tunnel deformation, weight
After preloading, the final water level of each outlet pipe is read, calculates the difference in height h of different compartments' water leveli, Eccentric Load work can be found out
With the soil pressure γ z being subject at the top of lower vertical load-bearing body different compartmentsi=ρ ghi, ρ is the density of water, and γ is the severe banketed,
And it can also find out the settling amount z of the soil body at the top of vertical load-bearing bodyi=ρ ghi/ γ, wherein i takes 1~n, combined data sum up by
The vertical earth pressure regularity of distribution of the lotus body under different settling amounts.
Compared with prior art, beneficial effect of the present invention is mainly manifested in:
1, measurement Eccentric Load provided by the invention acts on the experimental rig and its test method of lower vertical earth pressure distribution,
The vertical earth pressure that structures under the conditions of any geology are subject to can be measured.
2, implement the test method using device of the present invention, it can be to avoid during embedding soil pressure cell
The positional shift of generation, influences measurement accuracy.
3, experimental rig structure of the present invention is simple, cheap, facilitates handy.
Detailed description of the invention
Fig. 1 is the three-dimensional figure of experimental rig of the present invention.
Fig. 2 is the front view of experimental rig of the present invention.
Fig. 3 is the side view of experimental rig of the present invention.
Fig. 4 is the top view of experimental rig of the present invention.
Fig. 5 is the loading figure of experimental rig of the present invention
Fig. 6 is model casing through-hole of the present invention and vertical load-bearing body opening hole detail drawing.
Specific embodiment
Referring to attached drawing 1~6, measurement Eccentric Load acts on the experimental rig of lower geostatic shield, wherein 1- model casing, 2-
Foot prop, 3- through-hole, the vertical load-bearing body of 4-, 5- hole, 6- demarcation plate, 7- outlet pipe, 8- piston, 9- joint steel pipe.
Wherein n takes 5.
Including model casing 1 and the vertical load-bearing body 4 being arranged in the model casing；
Vertical 4 surrounding of load-bearing body and bottom are formed by steel plate splicing, and encapsulation process is passed through in stitching portion, described perpendicular
Constituted to load-bearing body inner space by four pieces of equal thickness demarcation plates 6 are evenly spaced at five compartments, each compartment be equipped with every
The piston 8 that can be slided up and down in the compartment along inner wall that room matches, the piston 8 and vertical 4 inner wall of load-bearing body
Contact portion is wrapped up with sealing ring；The demarcation plate 6 and the vertical 4 inner wall solder design of load-bearing body, the bottom of each compartment
It is equipped with the equal hole 5 of diameter, and each hole is each provided at the center of cell bottom；The model casing bottom of box is corresponding
The vertical load-bearing body hole location is equipped with the through-hole 2 to match with described hole 5；
Be equipped with joint steel pipe 9 at the hole 5, the joint steel pipe 9 from the hole 5 of vertical load-bearing body bottom along
The through-hole 2 of the model casing bottom of box is threadedly coupled to extended segment, the joint steel pipe 9 is externally provided with the outlet pipe 7, institute
The outlet pipe 7 stated is connected to and constitutes U-shaped linker with the vertical load-bearing body 4 by the joint steel pipe 9, and described goes out
Water pipe 7 and the vertical load-bearing body 4 are tightly connected；
The angle point of the model casing bottom four is equipped with four foot props 3, it is therefore an objective to convenient for bearing the load of experimental rig and giving
Outlet pipe reserves certain space.
The operating method that measurement Eccentric Load of the present invention acts on the experimental rig of lower vertical earth pressure distribution is specific
The following steps are included:
Step 1,4 inside sustained water injection of Xiang Shuxiang load-bearing body, until full of entire vertical load-bearing body；
Step 2, piston 8 is covered, excessive moisture is discharged, has contacted 8 bottom of piston just with the water surface, top is just at perpendicular
To 4 top side location of load-bearing body, and guarantee that the corresponding 7 inside head height of outlet pipe of each separated region is identical；
Step 3, it uniformly bankets to be layered inside model casing 1, persistently bankets at least making the intracorporal work of vertical load-bearing
Plug starts gradually to decline；
Step 4, as shown in figure 3, along with piston 8 decline, the water inside vertical load-bearing body is extruded into outlet pipe 7, out
Head height in water pipe 7 is gradually increasing；
Step 5, the SEA LEVEL VARIATION for observing outlet pipe 7, the initial water level of each outlet pipe is read in the stop timing of banketing；
Step 6, as shown in figure 5, to soil body surface heap weighting material, to subway tunnel deformation under analog bias load action
It influences, after weight preloading, reads the final water level of each outlet pipe 7, calculate the difference in height h of different compartmentsi, can Eccentric Load
The soil pressure γ z that vertical 4 different compartments of load-bearing body are subject under effecti=ρ ghi, ρ is the density of water, and γ is the severe banketed,
And it can also find out the settling amount z of the soil body at the top of vertical 4 different compartments of load-bearing bodyi=ρ ghi/ γ, wherein i takes 1~n, in conjunction with number
According to summing up the vertical earth pressure regularity of distribution of the vertical load-bearing body 4 under different settling amounts.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Range should not be construed as being limited to the specific forms stated in the embodiments, and protection scope of the present invention also includes art technology
Personnel conceive according to the present invention it is conceivable that equivalent technologies mean.
Claims (9)
1. the experimental rig that a kind of measurement Eccentric Load acts on lower vertical earth pressure distribution, it is characterised in that: including model casing (1)
With the vertical load-bearing body (4) being arranged in the model casing (1)；
Vertical load-bearing body (4) surrounding and bottom are formed by steel plate splicing, stitching portion encapsulation process, the vertical load-bearing
Body (4) inner space is constituted by n-1 equal thickness demarcation plate (6) is evenly spaced at n compartment, n is at least 1, and each compartment is equal
Equipped with the piston (7) that can be slided up and down in the compartment along inner wall to match with compartment；The demarcation plate (6) with
Vertical load-bearing body (4) inner wall closely connects, and the bottom of each compartment is equipped with the hole of same diameter (5)；Described
Model casing (1) bottom of box corresponds to the vertical load-bearing body opening hole (5) position and is equipped with the through-hole to match with described hole (5)
(3)；The external graduated outlet pipe of transparence band (7) of the hole (5), the outlet pipe (7) and it is described it is vertical by
Lotus body (4) is connected to and constitutes U-shaped linker, and the outlet pipe (7) and the vertical load-bearing body (4) are tightly connected.
2. experimental rig as described in claim 1, it is characterised in that: the demarcation plate (6) and the vertical load-bearing body
(4) inner wall carries out solder design.
3. experimental rig as described in claim 1, it is characterised in that: be equipped with joint steel pipe (9) at the hole (5), institute
The hole (5) of the joint steel pipe (9) stated from vertical load-bearing body (4) bottom is outside along the through-hole (3) of model casing (1) bottom of box
Equipped with extended segment, the joint steel pipe (9) and described outlet pipe (7) detachable connection.
4. experimental rig as claimed in claim 3, it is characterised in that: the joint steel pipe (9) and the outlet pipe (7)
To be threadedly coupled.
5. experimental rig as described in claim 1, it is characterised in that: model casing (1) angle point of bottom four is equipped with four
Foot prop (2).
6. experimental rig as described in claim 1, it is characterised in that: the joint steel pipe (9) and the hole (5) seal
Welding.
7. experimental rig as described in claim 1, it is characterised in that: the outlet pipe (7) is ABS material, and surface is with amount
Journey, " 0 " graduation mark of range and vertical load-bearing body (4) bottom maintain an equal level.
8. experimental rig as described in claim 1, it is characterised in that: the piston (7) contacts with vertical load-bearing body (4) inner wall
It is wrapped up with sealing ring part.
9. a kind of operating method of the experimental rig as described in one of claim 1~8, it is characterised in that: the method packet
Include following steps:
Step 1, the internal sustained water injection of Xiang Shuxiang load-bearing body (4), until full of entire vertical load-bearing body (4)；
Step 2, it covers piston (7), excessive moisture is discharged, has contacted piston (7) bottom just with the water surface, top is just at perpendicular
To load-bearing body (4) top side location, and guarantee that the internal head height of the corresponding outlet pipe of each compartment (7) is identical；
Step 3, be layered to model casing (1) inside and uniformly banket, persistently banket to the work at least made in vertical load-bearing body (4)
Plug (7) starts gradually to decline；
Step 4, along with the decline of piston (7), the internal water of vertical load-bearing body (4) is extruded into outlet pipe (7), described goes out
Head height in water pipe (7) is gradually increasing；
Step 5, the SEA LEVEL VARIATION for observing the outlet pipe (7) reads the initial water of each outlet pipe (7) in the stop timing of banketing
Position；
Step 6, to soil body surface heap weighting material, influence under analog bias load action to subway tunnel deformation, weight preloading
Afterwards, the final water level for reading each outlet pipe (7) calculates the difference in height h of water level, can find out Eccentric Load effect under vertically by
The settling amount z=ρ gh/ γ of the soil body, obtains load-bearing at the top of the soil pressure γ z=ρ gh and vertical load-bearing body (4) that lotus body (4) is subject to
The vertical earth pressure regularity of distribution of the body under different settling amounts, wherein ρ is the density of water, and γ is the severe banketed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910684016.1A CN110485395B (en) | 2019-07-26 | 2019-07-26 | Test device and test method for measuring vertical soil pressure distribution under action of bias load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910684016.1A CN110485395B (en) | 2019-07-26 | 2019-07-26 | Test device and test method for measuring vertical soil pressure distribution under action of bias load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110485395A true CN110485395A (en) | 2019-11-22 |
| CN110485395B CN110485395B (en) | 2024-03-26 |
Family
ID=68547619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910684016.1A Active CN110485395B (en) | 2019-07-26 | 2019-07-26 | Test device and test method for measuring vertical soil pressure distribution under action of bias load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110485395B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823545A (en) * | 2019-11-25 | 2020-02-21 | 集美大学 | Sprinkler water flow impact force distribution testing arrangement |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040014789A (en) * | 2002-08-12 | 2004-02-18 | 이은혜 | The educational model test apparatus to observe mechanical behaviour of soil structure |
| CN202075920U (en) * | 2011-06-08 | 2011-12-14 | 河海大学 | Soil pressure model testing device of retaining wall |
| CN105113555A (en) * | 2015-09-06 | 2015-12-02 | 湖南大学 | Reinforced earth retaining wall model test apparatus and method |
| CN106769478A (en) * | 2017-01-23 | 2017-05-31 | 浙江大学 | A kind of pile-soil interface shearing test device |
| CN207379817U (en) * | 2017-11-15 | 2018-05-18 | 石家庄铁道大学 | A kind of weak soil pressure distribution laboratory testing rig for simulating various working |
| CN109596258A (en) * | 2018-11-21 | 2019-04-09 | 河海大学 | A kind of reversible formula earth pressure gauge |
| CN209117479U (en) * | 2018-11-12 | 2019-07-16 | 同济大学浙江学院 | A kind of soil consolidation tester |
| CN211113563U (en) * | 2019-07-26 | 2020-07-28 | 浙江工业大学 | Test device for measuring vertical soil pressure distribution under action of bias load |
-
2019
- 2019-07-26 CN CN201910684016.1A patent/CN110485395B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040014789A (en) * | 2002-08-12 | 2004-02-18 | 이은혜 | The educational model test apparatus to observe mechanical behaviour of soil structure |
| CN202075920U (en) * | 2011-06-08 | 2011-12-14 | 河海大学 | Soil pressure model testing device of retaining wall |
| CN105113555A (en) * | 2015-09-06 | 2015-12-02 | 湖南大学 | Reinforced earth retaining wall model test apparatus and method |
| CN106769478A (en) * | 2017-01-23 | 2017-05-31 | 浙江大学 | A kind of pile-soil interface shearing test device |
| CN207379817U (en) * | 2017-11-15 | 2018-05-18 | 石家庄铁道大学 | A kind of weak soil pressure distribution laboratory testing rig for simulating various working |
| CN209117479U (en) * | 2018-11-12 | 2019-07-16 | 同济大学浙江学院 | A kind of soil consolidation tester |
| CN109596258A (en) * | 2018-11-21 | 2019-04-09 | 河海大学 | A kind of reversible formula earth pressure gauge |
| CN211113563U (en) * | 2019-07-26 | 2020-07-28 | 浙江工业大学 | Test device for measuring vertical soil pressure distribution under action of bias load |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823545A (en) * | 2019-11-25 | 2020-02-21 | 集美大学 | Sprinkler water flow impact force distribution testing arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110485395B (en) | 2024-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110514807A (en) | A kind of loess self-collapsibility quantity measuring method | |
| CN110046470A (en) | A kind of shield driving causes ground settlement method for determination of amount after work | |
| CN105735381A (en) | Centrifugal model test system with composite foundation and supporting structure having common characters | |
| Fattah et al. | Load distribution in pile group embedded in sandy soil containing cavity | |
| CN206772282U (en) | Offshore wind power foundation absolute settlement monitoring device | |
| CN110485395A (en) | A kind of measurement Eccentric Load acts on the experimental rig and its test method of lower vertical earth pressure distribution | |
| CN113449437A (en) | Novel clay inclined wall earth-rock dam leakage early warning method | |
| CN105160057A (en) | Method for determining optimal moisture content of filling soil in same energy level according to compaction-settlement ratio | |
| CN201901875U (en) | Excavation environment controlling and protecting monitoring unit for large-scale ultra-deep foundation pit | |
| CN107941137B (en) | Method for measuring deformation of drilling hole with any inclination angle | |
| CN113935098A (en) | Foundation pit support active soil pressure calculation method based on slip surface shape correction | |
| CN106400857B (en) | For the model equipment and method of the inaccessible degree of soil plug in in-site measurement opening pile | |
| CN107016204A (en) | A kind of method for determining lateral loading test horizontal foundation modulus | |
| CN116105650A (en) | Device and method for measuring absolute displacement inside surrounding rock of tunnel side wall | |
| Huang et al. | Centrifuge model test study on the mutual effect of water level variation and excavation on the deformation and failure of slopes | |
| CN211113563U (en) | Test device for measuring vertical soil pressure distribution under action of bias load | |
| CN205530403U (en) | Centrifugal test model test system of simulation composite foundation vertical load transport mechanism | |
| CN205530404U (en) | Verify supporting construction and soil body combined action's centrifugal test model | |
| CN110468885A (en) | A kind of experimental rig and its test method determining underground structure top surface soil arching effect sphere of action | |
| CN212001314U (en) | Experimental device for testing pile-soil interaction mechanism in expansion foundation | |
| CN114518292A (en) | Model test device and test method for high-speed railway roadbed of inclined crossing karez | |
| Ong et al. | Performance of pile due to tunneling-induced soil movements | |
| CN110219297B (en) | Real-time measuring device for soil thickness | |
| CN106592652B (en) | A kind of ultimate bearing force test method of deep basal pit internal drilling perfusion uplift pile | |
| CN212129265U (en) | Pile end resistance testing device at variable cross section of composite pile of riser pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |