CN203241408U - Indoor vacuum combined-supercharge preloading model test device - Google Patents
Indoor vacuum combined-supercharge preloading model test device Download PDFInfo
- Publication number
- CN203241408U CN203241408U CN2013200094974U CN201320009497U CN203241408U CN 203241408 U CN203241408 U CN 203241408U CN 2013200094974 U CN2013200094974 U CN 2013200094974U CN 201320009497 U CN201320009497 U CN 201320009497U CN 203241408 U CN203241408 U CN 203241408U
- Authority
- CN
- China
- Prior art keywords
- preloading
- test
- model test
- loading
- surcharge
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses an indoor vacuum combined-supercharge preloading model test device, comprising a settling tube, test soft soil, a sand cushion, a film, a vertical drainage body, a test data collecting instrument, a drainage pipeline and a loading device, wherein the test soft oil is loaded inside the settling tube; the sand cushion is paved on the surface of the soft soil; the film is sealed on the surface of the sand cushion; the vertical drainage body is arranged inside a soft soil body; the test data collecting instrument is buried inside the soft soil body; the drainage pipeline is arranged inside the sand cushion and connected with a vacuum pump; the loading device comprises a surcharge bearing platform, a loading disc and a dowel bar; the surcharge bearing platform is arranged at the upper part of the loading device; the loading disc is arranged at the lower part of the loading device; the dowel bar is rigidly connected between the supercharge bearing platform and the loading disc; the loading disc is arranged at the upper part of the settling tube and can vertically move along the inner wall of the settling tube. By the device, the soil body is solidified and achieves the requirements of a test under the condition of load application; a necessary basis is provided for construction. The indoor vacuum combined-supercharge preloading model test device is convenient to operate, small in floor area, simple to control, good in test effect, economic, low in investment, and the like, and is suitable for loading of an indoor simulation experiment.
Description
Technical field
The utility model relates to a kind of charger of indoor combined vacuum and surcharge preloading model test, and particularly weak soil body preloading, vacuum-surcharge preloading are reinforced the stress model device of mud and weak soil, belong to the Geotechnical Engineering field.
Background technology
Along with the development of economic construction, the harbour demand in coastal cities is obviously strengthened.Fast development is built at PORT OF TIANJIN, Lianyun Harbour and Nansha Area, Guangzhou port in recent years, and reclamation engineering progressively increases.Because the filler of reclaiming land around sea all is blowing-filling sludge soil, in order to satisfy the requirement of site operation, needs in indoor simulation test of carrying out preloading, vacuum preloading, vacuum-surcharge preloading.
The simulation laboratory test of present vacuum preloading is comparative maturity, but lab simulation piling prepressing situation then relatively is short of, the general Stress Control formula triaxial apparatus that adopts, sample attaches to draining under confined pressure basicly stable, then fixed under vertical stress (the load classification applies), measure sample axial deformation, water discharge, the variation of sample base apertures pressure, be out of shape basicly stable rear end and test, and the mechanics index of physics variation of the quality of weighing sample, measurement specimen finish and the rear soil body of mensuration reinforcing.But for mud and weak soil, because the restriction of soil mass property, soil moisture content is higher, be in and flow or half mobile state, intensity and bearing capacity are extremely low, this test can not be satisfied the requirement of site operation, and the simulation laboratory test of preloading and vacuum-surcharge preloading is real the realization not, thereby also just there is certain drawback in this test method.
The utility model content
The purpose of this utility model is to realize the loading of simulation laboratory test, designs that an equipment practicality, floor area are little, conveniently moving and the device that can effectively load.
To achieve these goals, a kind of indoor combined vacuum and surcharge preloading model test apparatus of the present utility model, it comprises: a settlement barrel, be loaded into the test weak soil in the settlement barrel, be layed in the sand bedding course on weak soil surface, be sealed in the film on sand bedding course surface, be arranged at the vertical drainage body in the weak soil soil body, be embedded in the Test Data Collecting instrument in the weak soil soil body, the water-pumping/draining pipeline and the charger that are arranged in the sand bedding course and are connected with vacuum pump, described charger comprises a superposed preloading cushion cap, one is positioned at the loading disk of bottom and rigid connection in transmission rod between the two, and described loading disk is arranged at settlement barrel top and can be vertically mobile along the settlement barrel inwall.
Described transmission rod is a hollow tube, and the described data line that is embedded in the Test Data Collecting instrument in the weak soil penetrates the hollow tube inner chamber and is access to external power source and control circuit.By above structure, transmission rod also can be realized taking in of pipeline except the function that realizes the pressure transmission.
Described charger also comprises steady rest, and steady rest comprises many legs, and leg circumferentially is evenly arranged along the preloading cushion cap, and the preloading cushion cap can be vertically mobile along leg.Steady rest has guaranteed the reposefully lifting of preloading cushion cap.
Be provided with diagonal brace between described preloading cushion cap bottom and the transmission rod, so that preloading platform stable ground is fixed on the transmission rod.
Described loading disk and settlement barrel inwall are for concerning movingly.Load disk both swimmingly slippage in settlement barrel, can guarantee again and settlement barrel between have certain sealing.
The sealing film is established in weak soil and sand bedding course neighboring, prevents that the soil body is extruded in the loading procedure.
By above device, in the situation of load application, the soil body produces fixed and reaches the requirement of test, for construction provides necessary foundation.
The utility model compared with prior art has following advantage:
1, can be according to test simulation object control load grade, and guarantee the accuracy of prefabricating load grade.Process of the test is relatively simple, and whole operating process is simple and effective, can effectively guarantee carrying out smoothly of preloading simulation test.
2, transmission rod is hollow, can lay the used data circuit of test, is conducive to data acquisition.
3, soft soil consolidation settlement barrel size is larger, can bury the multiple sensors foil gauge underground, about the collection of multiple test figure in the piling prepressing consolidation process.
The advantage of the charger of indoor weak soil model test is to add carried convenient, and floor area is little, and operation control is simple, and test effect is good, and economic investment province etc. are suitable for the loading of simulation laboratory test.
Description of drawings
Fig. 1 is facade structures synoptic diagram of the present utility model.
Fig. 2 is planar structure synoptic diagram of the present utility model.
Wherein: 1 preloading cushion cap; 2 steady rests; 3 transmission rods; 4 load disk; 5 soft soil consolidation settlement barrels; 6 legs.
Specific implementation method
As shown in Figures 1 and 2, be indoor combined vacuum and surcharge preloading model test apparatus of the present utility model, it comprises that one be used for to load the soft soil consolidation settlement barrel 5 of the soil body, is followed successively by from the bottom to top test in the settlement barrel with weak soil, sand bedding course and is sealed in the film on sand bedding course surface.The sealing film is established in weak soil and sand bedding course neighboring.
Be provided with vertical drainage body in the weak soil soil body, and embedding the Test Data Collecting instrument arranged, be provided with the water-pumping/draining pipeline in the sand bedding course, described water-pumping/draining pipeline is connected with vacuum pump.
Indoor combined vacuum and surcharge preloading model test apparatus of the present utility model also comprises charger, and described charger comprises that a superposed preloading cushion cap 1, that carries top pressure is positioned at the loading disk 4 of bottom, is positioned between the two and both is carried out the transmission rod 3 of rigid connection and be positioned at the steady rest 2 of outside usefulness as support.Steady rest 2 is made of many legs 6 and the crossbeam that is connected between the leg.In this example, preloading cushion cap 1 is a square platform, foursquare four jiaos and leg 6 flexible connections, and preloading cushion cap 1 can be along leg 6 integral elevatings.Load disk 4 and be arranged at settlement barrel top, with the settlement barrel inwall movingly, can be vertically mobile along the settlement barrel inwall.
Transmission rod 3 is a hollow tube, and the data line that is embedded in the required instrument of collection soft soil consolidation test figure in the weak soil penetrates the hollow tube inner chamber and is access to external power source and control circuit.Be provided with diagonal brace between preloading cushion cap 1 bottom and the transmission rod 3.
At first by above structure said apparatus is carried out mounting arrangements, use diaphragm seal, start simultaneously vacuum pump and carry out draining.After stabilization by consolidation, charger is placed on the settlement barrel 5, preloading provides different brackets precompressed preloading load on the preloading cushion cap 1, be applied to weak soil surface in the soft soil consolidation settlement barrel 5 through transmission rod 3 and the loading disk 4 that is connected with transmission rod 3, steady rest 2 guarantees the balance of charger and stablizing of test apparatus, wherein preloading cushion cap 1 is vertically mobile along steady rest 2 in the preloading process of consolidation, parameter measured in the process of the test passes to the outside by the data acquisition circuit of laying in the transmission rod hollow pipeline, is gathered by the computing machine automatic reception.
Claims (6)
1. indoor combined vacuum and surcharge preloading model test apparatus, it is characterized in that comprising: a settlement barrel, be loaded into the test weak soil in the settlement barrel, be layed in the sand bedding course on weak soil surface, be sealed in the film on sand bedding course surface, be arranged at the vertical drainage body in the weak soil soil body, be embedded in the Test Data Collecting instrument in the weak soil soil body, the water-pumping/draining pipeline and the charger that are arranged in the sand bedding course and are connected with vacuum pump, described charger comprises a superposed preloading cushion cap, one is positioned at the loading disk of bottom and rigid connection in transmission rod between the two, and described loading disk is arranged at settlement barrel top and can be vertically mobile along the settlement barrel inwall.
2. indoor combined vacuum and surcharge preloading model test apparatus according to claim 1, it is characterized in that: described transmission rod is a hollow tube, and the described data line that is embedded in the Test Data Collecting instrument in the weak soil penetrates the hollow tube inner chamber and is access to external power source and control circuit.
3. indoor combined vacuum and surcharge preloading model test apparatus according to claim 1, it is characterized in that: described charger also comprises steady rest, steady rest comprises many legs, and leg circumferentially is evenly arranged along the preloading cushion cap, and the preloading cushion cap can be vertically mobile along leg.
4. indoor combined vacuum and surcharge preloading model test apparatus according to claim 1 is characterized in that: be provided with diagonal brace between described preloading cushion cap bottom and the transmission rod.
5. indoor combined vacuum and surcharge preloading model test apparatus according to claim 1 is characterized in that: described loading disk and settlement barrel inwall are relation movingly.
6. indoor combined vacuum and surcharge preloading model test apparatus according to claim 1, it is characterized in that: the sealing film is established in weak soil and sand bedding course neighboring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200094974U CN203241408U (en) | 2013-01-08 | 2013-01-08 | Indoor vacuum combined-supercharge preloading model test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200094974U CN203241408U (en) | 2013-01-08 | 2013-01-08 | Indoor vacuum combined-supercharge preloading model test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203241408U true CN203241408U (en) | 2013-10-16 |
Family
ID=49318691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200094974U Expired - Fee Related CN203241408U (en) | 2013-01-08 | 2013-01-08 | Indoor vacuum combined-supercharge preloading model test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203241408U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502562A (en) * | 2014-11-25 | 2015-04-08 | 宁波大学 | Vertical well drainage consolidation soft foundation processing model test device and test method |
| CN107870128A (en) * | 2017-01-05 | 2018-04-03 | 天津大学 | A kind of mudding formula vacuum preloading laboratory test model |
| CN107964937A (en) * | 2017-12-30 | 2018-04-27 | 浙江大学 | A kind of device based on transparent native research preloading combined vacuum precompressed Foundation Treatment Effect step by step |
| CN108195689A (en) * | 2018-04-04 | 2018-06-22 | 山西潞安环保能源开发股份有限公司常村煤矿 | A kind of thick cyclinder roadway surrounding rock destroys and supporting analogue experiment method and device |
| CN108824502A (en) * | 2018-07-05 | 2018-11-16 | 浙江工业大学 | A kind of Multi-functional indoor model test apparatus for the processing of weak soil preloading method |
-
2013
- 2013-01-08 CN CN2013200094974U patent/CN203241408U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502562A (en) * | 2014-11-25 | 2015-04-08 | 宁波大学 | Vertical well drainage consolidation soft foundation processing model test device and test method |
| CN107870128A (en) * | 2017-01-05 | 2018-04-03 | 天津大学 | A kind of mudding formula vacuum preloading laboratory test model |
| CN107964937A (en) * | 2017-12-30 | 2018-04-27 | 浙江大学 | A kind of device based on transparent native research preloading combined vacuum precompressed Foundation Treatment Effect step by step |
| CN108195689A (en) * | 2018-04-04 | 2018-06-22 | 山西潞安环保能源开发股份有限公司常村煤矿 | A kind of thick cyclinder roadway surrounding rock destroys and supporting analogue experiment method and device |
| CN108824502A (en) * | 2018-07-05 | 2018-11-16 | 浙江工业大学 | A kind of Multi-functional indoor model test apparatus for the processing of weak soil preloading method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203241408U (en) | Indoor vacuum combined-supercharge preloading model test device | |
| CN102707034B (en) | Indoor model testing device and testing method employing air-pressure splitting vacuum preloading method | |
| Chen et al. | Impact of wetting–drying cycles on hydro-mechanical behavior of an unsaturated compacted clay | |
| CN102094432B (en) | Model for causing ground setting due to engineering environment effect and test method thereof | |
| CN108195684B (en) | Test system for researching mechanical behavior of foundation under action of cyclic moving load | |
| CN103675231A (en) | Soil layer sedimentation tester and test method thereof | |
| CN103674706A (en) | Pullout and model dual-purpose test device for reinforced earth structure of tire as well as test measurement method | |
| CN104020047A (en) | Solidification and permeation combined testing device and method | |
| CN208685680U (en) | A kind of geosynthetic reinforced pile supported embankments on soft soil model test apparatus | |
| CN104596853A (en) | Multifunctional vacuum preloading consolidation experiment apparatus and method for performing closed type vacuum preloading experiment | |
| CN109085323A (en) | It is a kind of can hierarchical control water level delaminating deposition model test apparatus and test method | |
| CN204924802U (en) | Simple and easy consolidation test device that clay layer warp is sent to indoor simulation extraction pressure -bearing water | |
| Song et al. | Buoyancy force on shallow foundations in clayey soil: An experimental investigation based on the “Half Interval Search” | |
| CN105804041A (en) | Large-area ultra-soft foundation settlement monitoring device and method | |
| Ni et al. | Model tests of buoyant force on underground structures | |
| CN103033460B (en) | The determinator of soil body horizontal osmotic coefficient and method thereof | |
| CN203365432U (en) | Soil-water characteristic curve testing instrument applicable to special coarse-grained soil | |
| Zhang et al. | Development and application of a three-dimensional geo-mechanical model test system under hydro-mechanical coupling | |
| CN104404940B (en) | A kind of Deep Soil Layers high pressure waterproof self-stabilising load test device | |
| CN203629965U (en) | Dual-purpose testing device of tire reinforced soil structure drawing model | |
| CN108387710A (en) | A kind of experimental rig and method for simulating the rectangle head boundary effect soil body | |
| CN201649138U (en) | Negative friction resistance testing device of cast-in-place concrete pile in self weight collapse loess | |
| CN204370398U (en) | A kind of Deep Soil Layers high pressure waterproof self-stabilising load test device | |
| CN114279934B (en) | Island reef water-rich calcareous sandy soil stratum grouting simulation and permeability test device and method | |
| CN201378031Y (en) | Rock-soil-volume measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20170108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |