CN107268691A - A kind of test model and test method that lifting bearing capacity of pile foundation is starched suitable for after-teeming - Google Patents
A kind of test model and test method that lifting bearing capacity of pile foundation is starched suitable for after-teeming Download PDFInfo
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- CN107268691A CN107268691A CN201710538553.6A CN201710538553A CN107268691A CN 107268691 A CN107268691 A CN 107268691A CN 201710538553 A CN201710538553 A CN 201710538553A CN 107268691 A CN107268691 A CN 107268691A
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- pile foundation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
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Abstract
The present invention relates to a kind of test model and test method that lifting bearing capacity of pile foundation is starched suitable for after-teeming, including filling system, model casing, pile foundation model, counter force system, monitoring system.Filling system is connected by Grouting Pipe with the soil body in model casing, and pile foundation model is inserted in the soil body in model casing by counter force system, and pile foundation model top is connected with displacement meter, load transducer and counter force system.In process of the test, pile foundation model is inserted in the model casing soil body by counter force system back-pressure；Self-control Grouting Pipe is embedded in pile peripheral earth, the slip casting into pile peripheral earth by filling system, and slurries test bearing capacity of pile foundation and settlement amount of pile foundation after condensing by counterforce device, load transducer, displacement meter.This test model for pile foundation grouting behind shaft or drift lining it is unqualified and during one's term of military service pile foundation need lifting bearing capacity the problem of, pass through similarity principle complete model engineering scene and carry out indoor slip casting and lift pile bearing capacity experiment, it is to avoid the problem of slurries diffusion is irregular in former slip casting model.
Description
Technical field
The present invention relates to a kind of experimental rig for being used to study bearing capacity of pile foundation lifting, and in particular to one kind is starched by after-teeming
Means lift the test model of bearing capacity of pile foundation, it is possible to achieve engineering stake end after-teeming slurry in practice, stake side after-teeming slurry, stake end-
The test simulation of stake side joint after-teeming slurry.
Background technology
Pile foundation is widely used in China Democratic National Construction Association's engineering, high-speed railway, highway, city as a kind of common base form
In the engineerings such as municipal bridge, port and pier, building.As economic develops rapidly, the requirement to traffic infrastructure
Also more and more high, the Bearing Capacity of Pile Foundation on original some low-grade highways and low standard for navigation river course can not meet warp
The need for Ji development, according to new road quality classification and standard for navigation, it is necessary to carry out upgrading enlarging to it.But as used staking or benefit
Stake etc. mode, then the cost of foundation engineering will increase substantially, the construction period also will accordingly extend.Therefore, as lifting pile foundation
The slurry injection technique of bearing capacity effective means is widely used.Slip casting belongs to concealed work, lifts stake by slip casting at present
There is empirical and blindness in the engineer applied of base bearing capacity, lack theoretical direction and foundation.Test model is used as simulation work
Effective research meanses at journey scene, have obtained the extensive concern of people, but there is no at present on by after-teeming caiquejee section lifting stake
The test model patent report of base bearing capacity.
The content of the invention
The purpose of the present invention be overcome engineering site after-teeming caiquejee section lifting bearing capacity of pile foundation during it is empirical and blind
Mesh, a kind of behaviour is provided for the quantitative relationship research between the after-teeming slurry pile foundation bearing capacity and grouting amount, grouting pressure of pile foundation
Make it is convenient, can the live slip casting lifting pile bearing capacity experiment research of model engineering model system.
To achieve the above object, the present invention uses following technical proposals：
A kind of after-teeming slurry lifting pile bearing capacity experiment model, including model casing, pile foundation model, filling system, counter-force system
System and monitoring system；Described model casing is used for bearing test soil sample, and a pile foundation model, institute are fitted with described soil sample
State and a counter force system is installed outside model casing, described counter force system includes a reaction frame, is set on described reaction frame
There is the force application apparatus for implementing opposite force to the top of described pile foundation model；The side of described pile foundation model is provided with to around it
Carry out the filling system of slip casting；Described monitoring system is monitored to the bearing capacity and settling amount of pile foundation.
Further, described model casing is internal diameter 1m, wall thickness 2cm, height 1.5m cylindrical metal bucket, in process of the test
The scene soil body compaction in layers of soil sample model engineering is into model casing.
Further, described filling system by air compressor machine, liquid storing barrel, slip casting recorder, Grouting Pipe and appendix and
Slip casting flexible pipe is constituted, and described liquid storing barrel is the sealed drum of welding steel up and down, and liquid storing barrel top sets blowing mouth and enters slurry
Mouthful, bottom is provided with slurry agitating device；Air compressor machine is connected slip casting flexible pipe with liquid storing barrel by appendix；Described slip casting flexible pipe with
Described Grouting Pipe is connected, and described Grouting Pipe is inserted into the side of pile foundation model；A part of slurries are stored in liquid storing barrel, are passed through
Air compressor machine is controlled to export constant air pressure, constant air pressure acts on slurries and then keeps constant slip casting pressure
Power.
Slurries jet exit is offered on the side wall of Grouting Pipe front end；Described slurries jet exit is more including multiple
Individual slurries jet exit is located on same axis, the diameter parallel of the axis and Grouting Pipe.
Further, described force application apparatus includes a jack, and the clutch end of described jack connects stake
Basic mode type, jack is connected with reaction frame.
Further, described monitoring system includes being used to monitor settlement amount of pile foundation and the displacement meter and load of bearing capacity are passed
Sensor, described load transducer is arranged between jack and reaction frame, the bearing capacity for monitoring pile foundation.
Further, reaction plate is installed at the top of described reaction frame, and is arranged on by nut on reaction frame.
Present invention also offers a kind of test method of after-teeming slurry lifting pile bearing capacity experiment model, including following step
Suddenly：
(1) assembly model test system；By the soil sample compaction in layers of preparation into model casing, pre-buried slip casting during rammed earth
Pipe, can symmetrically bury 2 or 4 Grouting Pipes according to experiment needs, be entered pile foundation model back-pressure in the soil body by counter force system, connect
Displacement meter, load transducer；
(2) filling system is assembled, air compressor and liquid storing barrel are connected by appendix, liquid storage is connected by slip casting flexible pipe
Bucket, slip casting recorder and self-control Grouting Pipe；
(4) a certain amount of slurries are opened air compressor machine and exports empty by certain pressure by sending slurry valve to pour into liquid storing barrel
Atmospheric pressure is into liquid storing barrel；
(5) slurry-inlet valve door is opened, starts slip casting；
(6) after slip casting terminates, model casing stands 2d, the settling amount and bearing capacity of pile foundation of test pile basic mode type.
Air compressor machine, jack, displacement meter, load transducer, slip casting recorder in the present invention are existing equipment, herein not
Repeat again.
The present invention have studied the model assay systems and its test method of slip casting lifting bearing capacity of pile foundation, former according to similitude
Reason realizes the slip casting simulation of lifting pile foundation bearing capacity.The grouting parameters such as grouting pressure can be carried out in experiment to carry with pile foundation
Quantitative relationship research between power, the present invention realizes the slip casting simulation of lifting soft soil layer bearing capacity of pile foundation, with following excellent
Point：
1st, bearing capacity of pile foundation hoisting grouting simulation process can be successfully realized, it is simple and convenient.
2nd, self-control Grouting Pipe is single grout outlet, and localization slip casting can be achieved.
2nd, bearing capacity of pile foundation is tested using counter force system, it is simple and convenient feasible.
3rd, slip casting power is used as using air pressure, it is ensured that pressure is constant.
4th, the quantitative relationship between grouting parameter and bearing capacity of pile foundation lifting can be studied by model test.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not constitute the improper restriction to the application.
Fig. 1 is model assay systems overall structure diagram；
Fig. 2, Fig. 3, Fig. 4 are model casing three-view diagram；
Fig. 5, Fig. 6, Fig. 7 are self-control Grouting Pipe three-view diagram
Fig. 8, Fig. 9 are reaction plate schematic diagram；
In figure：1 --- model casing；2 --- pile foundation model；3 --- air compressor machine；4 --- gas transmission line；5 --- liquid storing barrel；
6 --- stock inlet；7 --- agitating device；8 --- slip casting recorder；9 --- slip casting flexible pipe；10 --- self-control Grouting Pipe；
11 --- reaction frame；12 --- reaction plate；13 --- nut；14 --- jack；15 --- load transducer；16 --- position
Move meter.
Embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, the experiment that lifting bearing capacity of pile foundation is starched on after-teeming there is no at present in the prior art
Model patent；In order to solve technical problem as above, bearing capacity of pile foundation is lifted present applicant proposes a kind of starched suitable for after-teeming
Test model and test method.
In a kind of typical embodiment of the application, it is applied to after-teeming slurry lifting pile foundation there is provided one kind as shown in Figure 1
The test model of bearing capacity, including model casing 1, pile foundation model 2, filling system, counter force system and monitoring system；Described model
Case 1 is used for bearing test soil sample, is fitted with described soil sample outside a pile foundation model 2, the model casing 1 and is provided with one
Counter force system, described counter force system includes a reaction frame, is provided with described reaction frame 11 to described pile foundation model
Top implement opposite force force application apparatus；The side of described pile foundation model 2 is provided with the slip casting system to carrying out slip casting around it
System；Described monitoring system is monitored to the bearing capacity and settling amount of pile foundation.
As shown in Figure 2, Figure 3, Figure 4, model casing 1 is internal diameter 1m, wall thickness 2cm, height 1.5m cylindrical metal bucket, experiment
During the live soil body compaction in layers of soil sample model engineering into model casing.
Further, filling system is by air compressor machine 3, liquid storing barrel 5, slip casting recorder 8, self-control Grouting Pipe 10 and appendix
4th, slip casting flexible pipe 9 is constituted, and described liquid storing barrel 5 is the sealed drum of welding steel up and down, the top of liquid storing barrel 5 set blowing mouth and
Stock inlet, bottom is provided with slurry agitating device 7；Air compressor machine 3 is connected with liquid storing barrel by appendix, liquid storing barrel and slip casting recorder
Connected by defeated slurry flexible pipe 9；Defeated slurry flexible pipe 9 is connected with Grouting Pipe, and described Grouting Pipe 10 is noted to a circle of pile foundation model
A part of slurries are stored in slurry, liquid storing barrel 5, by controlling air compressor machine to export constant air pressure, constant air pressure is made
With on slurries and then keeping constant grouting pressure.
The structure of Grouting Pipe as shown in Fig. 5,6,7, offers slurries injection on the side wall of the grout outlet of Grouting Pipe 10
Outlet.Described slurries jet exit include it is multiple, multiple slurries jet exits be located at same axis on, the axis and slip casting
The diameter parallel of pipe.
Further, force application apparatus includes a jack 14, and the clutch end of described jack 14 connects pile foundation
Model, jack is connected with reaction frame.
Further, monitoring system includes the displacement meter and carrying sensor for being used to monitor pile foundation displacement, described carrying
Sensor is arranged between jack and reaction frame, the bearing capacity for monitoring pile foundation.
Counter force system includes reaction frame 11, reaction plate 12, nut 13 and jack 14, and system passes through jack and bearing plate
Counter-force is provided；The height of reaction frame 11 is the both sides that 2.4m is fixed by welding in model casing 1, and the experiment soil body is according to engineering site
Pile peripheral earth hydrogeologic condition, compaction in layers is into model casing 1.As shown in Figure 8, Figure 9, reaction frame 11 is fixed by welding in
The both sides of model casing 1, reaction plate 12 is the steel plate that thickness is 22mm, is fixed on by screw thread, nut 13 on reaction frame 11, and can
Prolong reaction frame 11 up and down, scope of activities is 20cm.Jack 14 is located between load transducer 15 and pile foundation model 2.
It is diameter 2-5cm, length 40-80cm perspex bar, pile foundation model to design pile foundation model 2 according to the principle of similitude
2 ends are 3cm tip.The soil body that the counter-force that pile foundation model 2 is provided by counter force system is inserted in model casing 1.
Monitoring system includes load transducer 15 and the two parts of displacement meter 16.Load transducer is located at reaction plate 12 and very heavy
Between top 14, for testing bearing capacity of pile foundation；Displacement meter 15 is located at the tip-end-side of pile foundation model 2, in order to prevent vibrations to displacement
The influence of measuring accuracy is counted, displacement meter opposite side is connected on reaction frame 7.
The test model and test method of lifting bearing capacity of pile foundation are starched using above-mentioned after-teeming, is comprised the following steps：
Step1. according to live pile foundation hydrogeological information, by pile peripheral earth according to actual soil mass property compaction in layers to mould
In molding box 1.It is rammed after every layer of soil and gently scrapes surface dust with scoop, it is ensured that the uniformity of the soil body, prevents every layer soil body to be layered
Phenomenon.
Step2. go out drilling in 2 center 30cm of distance model stake and Grouting Pipe 10 is installed, drill depth 50cm, by Grouting Pipe
10 are sequentially connected by slip casting flexible pipe 9 with slip casting recorder 8, liquid storing barrel 5, and liquid storing barrel 5 is connected successively with air compressor machine 3 by gas transmission 4
Connect, it is ensured that the seal of filling system.
Step3. counter force system is assembled, pile foundation model 2 is pressed into the simulation soil body by counter force system.Displacement is installed successively
Meter 16, jack 14, load transducer 15.
Step4. slurries are prepared, the slip casting into pile peripheral earth, grouting pressure is controlled in 0.2-0.7MPa, design to be achieved is whole
Stop slip casting after pressure, remove filling system, static 2 days of model passes through the quiet lotus loading test bearing capacity of pile foundation of counter force system.
The present invention relates to a kind of test model of after-teeming slurry lifting bearing capacity of pile foundation, including filling system (air compressor machine, liquid storage
Bucket, slip casting recorder, self-control Grouting Pipe), model casing, pile foundation model, counter force system (reaction frame, reaction plate, jack), monitoring
System (load transducer, displacement meter).Filling system is connected by making Grouting Pipe by oneself with the soil body in model casing, and pile foundation model leads to
Cross in the soil body in counter force system insertion model casing, pile foundation model top is connected with displacement meter, load transducer and counter force system.Examination
During testing, pile foundation model is inserted in the model casing soil body by counter force system back-pressure；Self-control Grouting Pipe is embedded in pile peripheral earth
Design attitude, the slip casting into pile peripheral earth by filling system, slurries condense after pass through counterforce device, load transducer, position
Move measurement examination bearing capacity of pile foundation and settlement amount of pile foundation.The model equipment starched on pile foundation after-teeming, this test model pin are there is no at present
It is unqualified to pile foundation grouting behind shaft or drift lining and during one's term of military service pile foundation need lifting bearing capacity the problem of, simulated completely by similarity principle
Engineering site carries out indoor slip casting lifting pile bearing capacity experiment, and designs and made the Grouting Pipe of unidirectional pulp by oneself to realize localization
Slip casting, it is to avoid the problem of slurries diffusion is irregular in former slip casting model, the device is simple and convenient, has to Practical Project and refers to
Lead meaning.
As can be seen from the above description, the application the above embodiments realize following technique effect：
The test simulation that slip casting lifts bearing capacity of pile foundation is realized, current slip casting lifting bearing capacity of pile foundation engineering neck is overcome
The empirical and blindness in domain.The present invention realizes the slip casting simulation of lifting soft soil layer bearing capacity of pile foundation, with advantages below：
1st, it can successfully realize that slip casting lifts the simulation process of bearing capacity of pile foundation.
2nd, self-control Grouting Pipe is single grout outlet, and localization slip casting can be achieved.
2nd, bearing capacity of pile foundation is tested using counter force system, it is simple and convenient feasible.
3rd, slip casting power is used as using air pressure, it is ensured that pressure is constant.
4th, the quantitative relationship between grouting parameter and bearing capacity of pile foundation lifting can be studied by model test.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deform still within protection scope of the present invention that creative work can make.
Claims (10)
1. a kind of test model that lifting bearing capacity of pile foundation is starched suitable for after-teeming, it is characterised in that including model casing, pile foundation mould
Type, filling system, counter force system and monitoring system；Described model casing is used for bearing test soil sample, in described soil sample interpolation
Equipped with a pile foundation model, a counter force system is installed outside the model casing, described counter force system includes a reaction frame,
The force application apparatus for implementing opposite force to the top of described pile foundation model is provided with described reaction frame；Described pile foundation model
Side be provided with to around pile foundation model carry out slip casting filling system；Described monitoring system is to the bearing capacity of pile foundation and heavy
Drop amount is monitored.
2. a kind of test model that lifting bearing capacity of pile foundation is starched suitable for after-teeming as claimed in claim 1, it is characterised in that institute
The model casing stated is internal diameter 1m, wall thickness 2cm, height 1.5m cylindrical metal bucket, soil sample model engineering scene soil in process of the test
Body compaction in layers is into model casing.
3. a kind of test model that lifting bearing capacity of pile foundation is starched suitable for after-teeming as claimed in claim 1, it is characterised in that institute
The filling system stated is made up of air compressor machine, liquid storing barrel, slip casting recorder, Grouting Pipe and appendix and slip casting flexible pipe, described
Liquid storing barrel is the sealed drum of welding steel up and down, and liquid storing barrel top sets blowing mouth and stock inlet, and bottom is stirred provided with slurries
Device；Air compressor machine is connected slip casting flexible pipe with liquid storing barrel by appendix；Described slip casting flexible pipe is connected with described Grouting Pipe, institute
The Grouting Pipe stated is inserted into the side of pile foundation model；A part of slurries are stored in liquid storing barrel, it is constant by controlling air compressor machine to export
Air pressure, constant air pressure acts on slurries and then keeps constant grouting pressure.
4. a kind of test model that lifting bearing capacity of pile foundation is starched suitable for after-teeming as claimed in claim 1, it is characterised in that
Slurries jet exit is offered on the side wall of described Grouting Pipe leading section.
5. a kind of test model that lifting bearing capacity of pile foundation is starched suitable for after-teeming as claimed in claim 4, it is characterised in that institute
The slurries jet exit stated include it is multiple, multiple slurries jet exits be located at same axis on, the axle of the axis and Grouting Pipe
Line is parallel.
6. a kind of test model that lifting bearing capacity of pile foundation is starched suitable for after-teeming as claimed in claim 5, it is characterised in that institute
The distance between Model Pile center line and Grouting Pipe center line for stating are 30cm.
7. a kind of test model that lifting bearing capacity of pile foundation is starched suitable for after-teeming as claimed in claim 1, it is characterised in that institute
The force application apparatus stated includes a jack, and the clutch end of described jack connects pile foundation model, jack and counter-force
Frame is connected.
8. a kind of test model that lifting bearing capacity of pile foundation is starched suitable for after-teeming as claimed in claim 1, it is characterised in that institute
Reaction plate is installed at the top of the reaction frame stated, and is arranged on by nut on reaction frame.
9. a kind of test model that lifting bearing capacity of pile foundation is starched suitable for after-teeming as claimed in claim 1, it is characterised in that institute
The monitoring system stated includes the displacement meter for monitoring pile foundation displacement and the carrying sensor of the bearing capacity monitoring to pile foundation, described
Carrying sensor be arranged between jack and reaction frame, the bearing capacity for monitoring pile foundation；Displacement meter is located at pile foundation model
Tip-end-side, displacement meter opposite side is connected on reaction frame.
10. it is applied to the test method that the test model of lifting bearing capacity of pile foundation is starched in after-teeming as described in claim 1-9 is any, its
It is characterised by, comprises the following steps：
(1) test model is assembled；By the soil sample compaction in layers of preparation into model casing, built-in slip casting pipe during rammed earth passes through
Counter force system enters pile foundation model back-pressure in the soil body, connection displacement meter, load transducer；
(2) assemble filling system, air compressor and liquid storing barrel connected by appendix, by slip casting flexible pipe connect liquid storing barrel,
Slip casting recorder and self-control Grouting Pipe；
(4) a certain amount of slurries are opened air compressor machine and presses certain pressure delivery air pressure by sending slurry valve to pour into liquid storing barrel
Power is into liquid storing barrel；
(5) slurry-inlet valve door is opened, starts slip casting；
(6) after slip casting terminates, model casing stands 2d, the settling amount and bearing capacity of pile foundation of test pile basic mode type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710538553.6A CN107268691B (en) | 2017-07-04 | 2017-07-04 | It is a kind of to starch the test model and test method for promoting bearing capacity of pile foundation suitable for after-teeming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710538553.6A CN107268691B (en) | 2017-07-04 | 2017-07-04 | It is a kind of to starch the test model and test method for promoting bearing capacity of pile foundation suitable for after-teeming |
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| Publication Number | Publication Date |
|---|---|
| CN107268691A true CN107268691A (en) | 2017-10-20 |
| CN107268691B CN107268691B (en) | 2019-03-26 |
Family
ID=60070996
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|---|---|---|---|
| CN201710538553.6A Active CN107268691B (en) | 2017-07-04 | 2017-07-04 | It is a kind of to starch the test model and test method for promoting bearing capacity of pile foundation suitable for after-teeming |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344451A (en) * | 2019-07-01 | 2019-10-18 | 浙江大学 | A kind of simulation cement paste around pile reinforcing influences the experimental rig and test method of research on pile foundation level bearer properties |
| CN110850060A (en) * | 2019-11-22 | 2020-02-28 | 北京交通大学 | Visual porous grouting test device and test method thereof |
| CN111021440A (en) * | 2020-03-07 | 2020-04-17 | 西南交通大学 | CPT integrated geotechnical packaging granular pile indoor model test device and method |
| CN111141593A (en) * | 2020-01-15 | 2020-05-12 | 东南大学 | Anchor rod system anchoring slurry-soil body interface mechanical characteristic detection device |
| CN111648416A (en) * | 2020-06-19 | 2020-09-11 | 长安大学 | Servo-controlled mechanical hole-forming model test device for club-footed pile and use method |
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| CN203490129U (en) * | 2013-10-01 | 2014-03-19 | 浙江工业职业技术学院 | Inner load test device for post-grouting of pile tip |
| CN106049557A (en) * | 2016-05-24 | 2016-10-26 | 同济大学 | Indoor testing device for simulating grouting pile end post-grouting and testing method |
| CN106284443A (en) * | 2016-09-07 | 2017-01-04 | 同济大学 | A kind of test method simulating the anti-bearing capacity of bottom-grouting-enlarged stake |
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| US6801814B1 (en) * | 2002-11-02 | 2004-10-05 | Gannett Fleming, Inc. | Apparatus and method for computerized data collection, monitoring, analysis, and control of grouting operations |
| US6869255B1 (en) * | 2002-11-05 | 2005-03-22 | Beck, Iii August H. | Post-stressed pile |
| CN203490129U (en) * | 2013-10-01 | 2014-03-19 | 浙江工业职业技术学院 | Inner load test device for post-grouting of pile tip |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344451A (en) * | 2019-07-01 | 2019-10-18 | 浙江大学 | A kind of simulation cement paste around pile reinforcing influences the experimental rig and test method of research on pile foundation level bearer properties |
| CN110344451B (en) * | 2019-07-01 | 2024-01-19 | 浙江大学 | Test device and test method for simulating influence study of grouting reinforcement around pile on horizontal bearing characteristics of pile foundation |
| CN110850060A (en) * | 2019-11-22 | 2020-02-28 | 北京交通大学 | Visual porous grouting test device and test method thereof |
| CN111141593A (en) * | 2020-01-15 | 2020-05-12 | 东南大学 | Anchor rod system anchoring slurry-soil body interface mechanical characteristic detection device |
| CN111141593B (en) * | 2020-01-15 | 2022-03-08 | 东南大学 | Anchor rod system anchoring slurry-soil body interface mechanical characteristic detection device |
| CN111021440A (en) * | 2020-03-07 | 2020-04-17 | 西南交通大学 | CPT integrated geotechnical packaging granular pile indoor model test device and method |
| CN111648416A (en) * | 2020-06-19 | 2020-09-11 | 长安大学 | Servo-controlled mechanical hole-forming model test device for club-footed pile and use method |
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| Publication number | Publication date |
|---|---|
| CN107268691B (en) | 2019-03-26 |
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