CN203982667U - Ribbing geomembrane composite pad system model test unit - Google Patents
Ribbing geomembrane composite pad system model test unit Download PDFInfo
- Publication number
- CN203982667U CN203982667U CN201420325654.7U CN201420325654U CN203982667U CN 203982667 U CN203982667 U CN 203982667U CN 201420325654 U CN201420325654 U CN 201420325654U CN 203982667 U CN203982667 U CN 203982667U
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- CN
- China
- Prior art keywords
- geomembrane
- concrete slab
- ribbing
- armoured concrete
- finer wire
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- Expired - Fee Related
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to a kind of ribbing geomembrane composite pad system model test unit, comprise model casing, armoured concrete slab, finer wire, fixed pulley, tautness meter and geomembrane fixture, certain thickness sand is laid in described model casing bottom, form the required gradient of experiment, described armoured concrete slab is laid on sand surface, described fixed pulley is arranged on the sidewall of model casing, described geomembrane fixture is connected to one end of armoured concrete slab, described geomembrane fixture connects finer wire, and finer wire connects tautness meter by fixed pulley.This device, due to less size and easy operation, has met the analog simulation of test; Adopt armoured concrete slab to increase friction and foundation stiffness, object is the impact on result of non-uniform settling in order to reduce slippage between geomembrane and ground and ground, makes the result of ribbing geomembrane and geotextile frictional behaviour more accurate, and easy to operate simultaneously.
Description
Technical field
The utility model relates to Geotechnical Engineering experimental technique field, relates in particular to a kind of ribbing geomembrane composite pad system model test unit.
Background technology
The increasing that increases the demand that causes refuse landfill of house refuse, composite pad system unstable failure is one of the landfill yard factor that need to study and pay attention at present, existing a lot of experts and scholars have carried out a large amount of experimental studies and theoretical research to liner system, but due to the defect of current professional knowledge and still shallow to earth working material degree of understanding, variety of way can accurately not go to measure its frictional behaviour, the simplification of constitutive model and the complexity of calculating, now widely used method is all on certain simplification basis, to test or the performance in a certain respect of geomembrane is studied, as carry out direct shear test etc., cannot simulate geomembrane mechanical characteristic and destruction form in the composite pad system of refuse landfill, site test is uncontrollable due to experimental factor again, the bad record of test figure and collection, and measuring period is long, and at present cannot widespread use.
Model test is a kind of test of the overview of model engineering according to a certain percentage, simulation that can qualitative, quantitative and test some test influence factor.Adopt and can observe more intuitively in this way its variation, simulate more really the impacts such as real-time status lower stress and distortion.This experiment adopts undersized model test, and relatively good operation, implements more convenient economy, also can reach good effect simultaneously.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of ribbing geomembrane composite pad system model test unit.
For achieving the above object, the present invention adopts following technical scheme:
A kind of ribbing geomembrane composite pad system model test unit, comprise model casing, armoured concrete slab, finer wire, fixed pulley, tautness meter and geomembrane fixture, certain thickness sand is laid in described model casing bottom, form the required gradient of experiment, described armoured concrete slab is laid on sand surface, described fixed pulley is arranged on the sidewall of model casing, described geomembrane fixture is connected to one end of armoured concrete slab, described geomembrane fixture connects finer wire, and finer wire connects tautness meter by fixed pulley.
Described model casing sidewall is made up of poly (methyl methacrylate) plate or tempered glass, and skeleton is that steel plate and No. 8 channel-section steels are welded.
Described armoured concrete slab surface uses water jetting to do hair, draws the grid of rhombus simultaneously in the above.
Described finer wire outer wrapping plastic flexible pipe.
Compared with prior art, the beneficial effects of the utility model are:
This device can be used for simulating the slippage of the stressing conditions of ribbing geomembrane and the sedimentation of model refuse soil and geotextile geomembrane in refuse landfill composite pad system.This device is less with respect to other moulded dimensions, is easy to realize and economic good operation.This installs armoured concrete slab used and has increased and the friction of geomembrane, has reduced the possibility of geomembrane generation slippage and the fold of crispaturaing in experimentation, has simulated rigid foundation simultaneously and has avoided the impact of non-uniform settling on test findings.This device has used wider fixture at tautness meter and geomembrane junction, has avoided the stressed problem that causes nonaffine deformation of concentrating, and puts plastic flexible pipe in model clay simultaneously, has reduced the friction of soil with finer wire.
Brief description of the drawings
Fig. 1 is the framework elevation drawing of this practical ribbing geomembrane composite pad system model test unit embodiment.
Fig. 2 is clamp planimetric map in this practical ribbing geomembrane composite pad system model test unit embodiment.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further illustrated.
As shown in Figure 1, a kind of ribbing geomembrane composite pad system model test unit, comprise model casing 1, armoured concrete slab 2, finer wire 3, fixed pulley 4, tautness meter 5 and geomembrane fixture 6, certain thickness sand is laid in described model casing 1 bottom, form the required gradient of experiment, described armoured concrete slab 2 is laid on sand surface, described fixed pulley 4 is arranged on the sidewall of model casing 1, described geomembrane fixture 6 is connected to one end of armoured concrete slab 2, described geomembrane fixture 6 connects finer wire 3, and finer wire 3 connects tautness meter 5 by fixed pulley 4.
Described model casing 1 sidewall is made up of poly (methyl methacrylate) plate or tempered glass, and skeleton is that steel plate and No. 8 channel-section steels are welded.
Before the interior filling sand of model casing 1, the antetheca of model casing 1 disassembles, layering is afterwards loaded sand according to the height setting in advance and the gradient, limit filling limit compacting, ensureing can landing or unstability occurring in early stage, then in side slope, place armoured concrete slab 2, described armoured concrete slab 2 surfaces use water jetting to do hair, draw the grid of rhombus simultaneously in the above, not only increase the friction force of geomembrane and ground, simulate rigid foundation simultaneously, closer to reality operating mode more, avoid ground and produced larger distortion because above cover the variation of refuse soil.
Described finer wire 3 outer wrapping plastic flexible pipes 7, the friction that can reduce between steel wire and model clay reaches the effect that reduces error, geomembrane fixture 6 is used for fixing the end of geomembrane, thereby can be because of not stressed and roll up or force measurement is drawn in the impact of the phenomenon such as fold with geomembrane in this warranty test process.
When concrete test, mode of operation is described below:
(1) preliminary work
Equipment is connected with computer by data collecting instrument, so that real time record and statistics.Data collecting instrument is connected with the output terminal of described sensor, for recording real-time displacement, stress and strain.Wireless network measurement and control communication device is connected with described Acquisition Instrument, for realizing described computing machine, the long-range of field test data is checked.Check by data acquisition system (DAS) whether each pressure cell, dial gauge and hydraulic jack pressure against the ends sensor can normally work; Can inspection electronic magnetic gauge stand normally work.
(2) modelling
Building slope model adopts layered backfill, builds from the bottom to top lower one deck after compacting.Afterwards ready-made armoured concrete slab 2 is placed on ground by certain gradient, test geotextile and geomembrane used is laid on armoured concrete slab, and at one end use the clamp of tautness meter, while ensureing landfill simulation rubbish, come off downwards and cause fold along steel plate.Paste the foil gauge of a determining deviation along side slope direction on geomembrane surface; Place a slippage with geomembrane in graduated tape measure loading procedure along sidewall according to geomembrane laying direction and position.Along the gradient embedding soil pressure cell above geomembrane, note now in geotextile, having the thin sand of one deck, to ensure the accuracy of data.
(3) arrange measurement mechanism
On model casing, arranging electronic Magnetic gauge stand fixing dial gauge are to each point position.On model clay top-loaded plate, arrange 3 dial gauges, with measurement model soil average settlement, in the sand in model casing according to requirement of experiment placement force box.
(4) test ending work
After off-test, in data acquisition system (DAS), preserve removing external device after test figure, close measuring equipment, successively dig out banket, pressure cell and geomembrane observe geomembrane slippage and destruction situation.
Claims (4)
1. a ribbing geomembrane composite pad system model test unit, it is characterized in that: comprise model casing (1), armoured concrete slab (2), finer wire (3), fixed pulley (4), tautness meter (5) and geomembrane fixture (6), certain thickness sand is laid in described model casing (1) bottom, form the required gradient of experiment, described armoured concrete slab (2) is laid on sand surface, described fixed pulley (4) is arranged on the sidewall of model casing (1), described geomembrane fixture (6) is connected to one end of armoured concrete slab (2), described geomembrane fixture (6) connects finer wire (3), finer wire (3) connects tautness meter (5) by fixed pulley (4).
2. ribbing geomembrane composite pad system model test unit according to claim 1, is characterized in that: described model casing (1) sidewall is made up of poly (methyl methacrylate) plate or tempered glass, and skeleton is that steel plate and No. 8 channel-section steels are welded.
3. ribbing geomembrane composite pad system model test unit according to claim 1, is characterized in that: described armoured concrete slab (2) surface uses water jetting to do hair, draws the grid of rhombus simultaneously in the above.
4. ribbing geomembrane composite pad system model test unit according to claim 1, is characterized in that: described finer wire (3) outer wrapping plastic flexible pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420325654.7U CN203982667U (en) | 2014-06-18 | 2014-06-18 | Ribbing geomembrane composite pad system model test unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420325654.7U CN203982667U (en) | 2014-06-18 | 2014-06-18 | Ribbing geomembrane composite pad system model test unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203982667U true CN203982667U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420325654.7U Expired - Fee Related CN203982667U (en) | 2014-06-18 | 2014-06-18 | Ribbing geomembrane composite pad system model test unit |
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| CN (1) | CN203982667U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823683A (en) * | 2015-01-09 | 2016-08-03 | 河南工业大学 | Device for visually observing deformation features of EPS sludge mixed light-weight soil |
| CN108847079A (en) * | 2018-06-27 | 2018-11-20 | 水利部交通运输部国家能源局南京水利科学研究院 | Crack of soils inducing device and its method for rehearsal of speedily carrying out rescue work |
-
2014
- 2014-06-18 CN CN201420325654.7U patent/CN203982667U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823683A (en) * | 2015-01-09 | 2016-08-03 | 河南工业大学 | Device for visually observing deformation features of EPS sludge mixed light-weight soil |
| CN108847079A (en) * | 2018-06-27 | 2018-11-20 | 水利部交通运输部国家能源局南京水利科学研究院 | Crack of soils inducing device and its method for rehearsal of speedily carrying out rescue work |
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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: 20141203 Termination date: 20150618 |
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| EXPY | Termination of patent right or utility model |