CN204405424U - A kind of laminar shear model clay case that can load - Google Patents

A kind of laminar shear model clay case that can load Download PDF

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Publication number
CN204405424U
CN204405424U CN201520099008.8U CN201520099008U CN204405424U CN 204405424 U CN204405424 U CN 204405424U CN 201520099008 U CN201520099008 U CN 201520099008U CN 204405424 U CN204405424 U CN 204405424U
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China
Prior art keywords
shear
load
steel plate
laminar shear
pressure
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Expired - Fee Related
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CN201520099008.8U
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Chinese (zh)
Inventor
王志华
许振巍
高洪梅
张鑫磊
张宇杰
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Nanjing University of Science and Technology
Nanjing Tech University
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Nanjing University of Science and Technology
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Abstract

This application discloses a kind of laminar shear model clay case that can load, comprise base plate, be fixedly installed on base plate and can simulate the laminar shear model clay case body of soil layer detrusion and be arranged at the pressurised airbag of laminar shear model clay case bodies top, this pressurised airbag is circumscribed with high pressure and adds gas cylinder; The top of pressurised airbag is provided with a counter force system.Counter force system comprises the pressure-bearing steel plate that a piece is arranged at pressurised airbag top, and the top of this pressure-bearing steel plate is provided with one block of counter-force steel plate; Some groups of rolling pulleies are provided with between described pressure-bearing steel plate and counter-force steel plate.After adopting said structure, by the control to gas boosting load in pressurised airbag, thus effective confining pressure can be applied to soil layer, to simulate the stress state of Deep Soil Layers.In process of the test, laminar shear model clay case body can not limit the motion of soil layer on direction of vibration, effectively can simulate the response of Deep Soil Layers under oscillatory load effect.

Description

A kind of laminar shear model clay case that can load
Technical field
The application relates to a kind of Large-scale Shaking Table Test model clay case, particularly a kind of laminar shear model clay case that can load.
Background technology
At present, shaketalle test is still one of Main Means of Joule-Thomson effect analysis, the laminar shear model clay case that domestic application is studied in shaketalle test, because effectively effective confining pressure cannot be loaded on soil layer, it is limited to the height of model clay case to the simulated thickness in actual place, generally can only simulate the soil thickness of 2m to 3m, earthquake sheet analysis cannot be carried out to Deep Soil Layers.And in Practical Project and in research work, often need buried depth more than ten rice, or even the soil layer of more than 50m and construction wherein carry out anti-seismic performance research.Existing laminar shear model clay case is difficult to meet the requirement of simulating Deep Soil Layers in shaketalle test.
Utility model content
The technical matters that the application will solve is for above-mentioned the deficiencies in the prior art, and provides a kind of laminar shear model clay case that can load effectively can simulating Deep Soil Layers yo-yo effect.
For solving the problems of the technologies described above, the technical scheme that the application adopts is:
A kind of laminar shear model clay case that can load, comprise base plate, be fixedly installed on base plate and can simulate the laminar shear model clay case body of soil layer detrusion and be arranged at the pressurised airbag of laminar shear model clay case bodies top, this pressurised airbag is circumscribed with high pressure and adds gas cylinder; The top of pressurised airbag is provided with a counter force system.
Described counter force system comprises the pressure-bearing steel plate that a piece is arranged at pressurised airbag top, and the top of this pressure-bearing steel plate is provided with one block of counter-force steel plate; Some groups of rolling pulleies are provided with between described pressure-bearing steel plate and counter-force steel plate.
Described counter force system also comprises the reaction frame being arranged at laminar shear model clay case body both sides, and the top of this reaction frame is connected with counter-force Interal fixation.
Described reaction frame is also provided with and can carries out spacing location backing plate to rolling pulley.
Layered shear model soil case body is stratiform framework, is provided with rolling bearing between adjacent two layers framework.
Layered shear model soil case body folds ring composition primarily of friction free each other.
The number of plies of layered shear model soil case body is 10 layers, and number from top to bottom, the floor height of the first shear layer is the twice of other shear layer floor height.
The one or both sides of described pressurised airbag are provided with sensor terminal box.
Described pressure-bearing steel plate is provided with several sensor wire holes.
Described pressure-bearing steel plate is also provided with the osculum can closed with screw.
After the application adopts said structure, there is following beneficial effect:
1. in shaketalle test, by the control to gas boosting load in pressurised airbag, thus effective confining pressure can be applied to soil layer, to simulate the stress state of Deep Soil Layers.
2, in process of the test, laminar shear model clay case body can not limit the motion of soil layer on direction of vibration, effectively can simulate the response of Deep Soil Layers under oscillatory load effect.
3, the setting of above-mentioned osculum, in sample making course, by controlling the shutoff of osculum, strictly can control draining, thus can control the saturation degree of soil sample preferably.
Accompanying drawing explanation
Fig. 1 shows the front view of a kind of laminar shear model clay case that can load of the application;
Fig. 2 shows the side view of a kind of laminar shear model clay case that can load of the application;
Fig. 3 shows the structural representation of pressure-bearing steel plate;
Fig. 4 shows the process of the test schematic diagram of a kind of laminar shear model clay case that can load of the application.
Wherein have: 1. base plate; 2. laminar shear model clay case body; 3. pressurised airbag; 4. sensor outlet box; 5. pressure-bearing steel plate; 6. counter-force steel plate; 7. reaction frame; 8. rolling pulley; 9. pulley groove; 10. sensor wire hole; 11. location backing plates.
Embodiment
Below in conjunction with accompanying drawing and concrete better embodiment, the application is described in further detail.
As depicted in figs. 1 and 2, a kind of laminar shear model clay case that can load, comprises base plate 1, laminar shear model clay case body 2, pressurised airbag 3 and a counter force system.
The bottom of above-mentioned base plate 1 can directly be connected with large-scale vibrating testing table, and vibrates along with large-scale vibrating testing table.
Above-mentioned laminar shear model clay case body 2 is fixedly installed on base plate 1, can simulate soil layer detrusion.The structure of laminar shear model clay case body 2 has the following two kinds preferred embodiment.
Embodiment 1
Laminar shear model clay case body 2 is stratiform framework, is provided with rolling bearing between adjacent two layers framework.The setting of rolling bearing, limits vertical and sideway movement on the one hand; On the other hand, to make between framework can on direction of vibration relative sliding, thus the detrusion of soil layer can be simulated.
Embodiment 2
Laminar shear model clay case body 2 folds ring composition primarily of friction free each other.Folded interannular can on direction of vibration relative sliding, thus the detrusion of soil layer can be simulated.
In above-mentioned two kinds of embodiments, the number of plies of laminar shear model clay case body 2 is all preferably 10 layers, number from top to bottom, and the floor height of the first shear layer (also namely most top layer) is the twice of other shear layer floor height.Floor height as the first shear layer is 20cm, then all the other floor heights of 9 layers are respectively 10cm.The benefit of such setting is: enter other shear layer after can preventing pressurised airbag 3 from inflating and destroy, play the effect of protection pressurised airbag 3.
In process of the test, each shear layer of laminar shear model clay case body 2, allows soil layer to produce tangential movement under effect of vibration, reduces the boundary effect of model.
Above-mentioned pressurised airbag 3 is arranged on the top of laminar shear model clay case body 2, also can be arranged in the first shear layer.Pressurised airbag 3 is circumscribed with high pressure and adds gas cylinder, as required, adds pressure valve, can apply the air pressure load of setting in advance, to simulate the effective confining pressure that soil layer covers to pressurised airbag 3 by what control that high pressure adds gas cylinder.
The one or both sides of pressurised airbag 3 are provided with sensor terminal box 4.
The top of pressurised airbag 3 is provided with a counter force system, and the air pressure of pressurised airbag 3 effectively evenly can be passed to soil layer by this counter force system, makes soil layer consolidation under specific confined pressure.
Counter force system preferably includes one block of pressure-bearing steel plate, 5, one block of counter-force steel plate 6, is arranged at the some groups of rolling pulleies 8 between pressure-bearing steel plate 5 and counter-force steel plate 6 and is arranged on the reaction frame 7 of laminar shear model clay case body 2 both sides.
As shown in Figure 3, pressure-bearing steel plate 5 is arranged on the top of pressurised airbag 3, and the top of pressure-bearing steel plate 5 has been horizontally disposed with some pulley grooves 9, and rolling pulley 8 can horizontally slip along pulley groove 9 level on pressure-bearing steel plate 5.In process of the test, pressure-bearing steel plate 5 with soil layer motion, reduces the boundary effect of model because of the rolling of rolling pulley 8.
Above-mentioned pressure-bearing steel plate 5 is also provided with several sensor wiring holes 10 and several osculums can closed with screw.Osculum is preferably 12, in sample making course, according to the speed tested the need of draining and draining, selects to close all or part of osculum.By controlling the shutoff of osculum, strictly can control draining, thus the saturation degree of soil sample can be controlled preferably.
Above-mentioned counter-force steel plate 6 is arranged on the top of pressure-bearing steel plate 5, and the both sides of counter-force steel plate 5 are fixedly connected with the top of reaction frame 7.The bottom of reaction frame 7 is fixed on base plate 1.Reaction frame 7 is also provided with and can carries out spacing location backing plate 11 to rolling pulley 8.
In shaketalle test, be first seated in by the soil body in laminar shear model clay case body 2, after filling, add gas cylinder by external high pressure and apply air pressure to pressurised airbag 3, the air pressure of pressurised airbag 3 is passed to soil layer by counter force system.In process of the test, each shear layer and the firm plate 5 of pressure-bearing with soil layer at direction of vibration forms of motion, as shown in Figure 4.
By the control to gas boosting load in pressurised airbag 3, thus effective confining pressure can be applied to soil layer, to simulate the stress state of Deep Soil Layers.In process of the test, laminar shear model clay case body can not limit the motion of soil layer on direction of vibration, effectively can simulate the response of Deep Soil Layers under oscillatory load effect.
More than describe the preferred implementation of the application in detail; but the application is not limited to the detail in above-mentioned embodiment, within the scope of the technical conceive of the application; can carry out multiple equivalents to the technical scheme of the application, these equivalents all belong to the protection domain of the application.

Claims (10)

1. the laminar shear model clay case that can load, it is characterized in that: comprise base plate, be fixedly installed on base plate and can simulate the laminar shear model clay case body of soil layer detrusion and be arranged at the pressurised airbag of laminar shear model clay case bodies top, this pressurised airbag is circumscribed with high pressure and adds gas cylinder; The top of pressurised airbag is provided with a counter force system.
2. the laminar shear model clay case that can load according to claim 1, it is characterized in that: described counter force system comprises the pressure-bearing steel plate that a piece is arranged at pressurised airbag top, the top of this pressure-bearing steel plate is provided with one block of counter-force steel plate; Some groups of rolling pulleies are provided with between described pressure-bearing steel plate and counter-force steel plate.
3. the laminar shear model clay case that can load according to claim 2, it is characterized in that: described counter force system also comprises the reaction frame being arranged at laminar shear model clay case body both sides, the top of this reaction frame is connected with counter-force Interal fixation.
4. the laminar shear model clay case that can load according to claim 3, is characterized in that: described reaction frame is also provided with and can carries out spacing location backing plate to rolling pulley.
5. the laminar shear model clay case that can load according to claim 1, is characterized in that: layered shear model soil case body is stratiform framework, is provided with rolling bearing between adjacent two layers framework.
6. the laminar shear model clay case that can load according to claim 1, is characterized in that: layered shear model soil case body folds ring composition primarily of friction free each other.
7. the laminar shear model clay case that can load according to claim 1 or 5 or 6, is characterized in that: the number of plies of layered shear model soil case body is 10 layers, and number from top to bottom, the floor height of the first shear layer is the twice of other shear layer floor height.
8. the laminar shear model clay case that can load according to claim 2, is characterized in that: the one or both sides of described pressurised airbag are provided with sensor terminal box.
9. the laminar shear model clay case that can load according to claim 8, is characterized in that: described pressure-bearing steel plate is provided with several sensor wire holes.
10. the laminar shear model clay case that can load according to claim 9, is characterized in that: described pressure-bearing steel plate is also provided with the osculum can closed with screw.
CN201520099008.8U 2015-02-12 2015-02-12 A kind of laminar shear model clay case that can load Expired - Fee Related CN204405424U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104614231A (en) * 2015-02-12 2015-05-13 南京工业大学 Loadable stratiform shearing model soil box
CN105115687A (en) * 2015-09-06 2015-12-02 中国石油天然气集团公司 Laminated shearing box
CN106522286A (en) * 2016-10-11 2017-03-22 黑龙江省地震局 Large soil-structure interaction test box
CN107727681A (en) * 2017-09-05 2018-02-23 中国矿业大学 A kind of inclined armoured concrete slab anti-fire test device
CN108005669A (en) * 2018-02-02 2018-05-08 中铁隧道局集团有限公司 A kind of balancing earth-pressure shielding machine analogue experiment installation
CN108316933A (en) * 2018-02-02 2018-07-24 中铁隧道局集团有限公司 A kind of method that native case bankets in balancing earth-pressure shielding machine simulated experiment
CN108374666A (en) * 2018-03-13 2018-08-07 中铁隧道局集团有限公司 The method that native case bankets in earth pressure balanced shield, EPBS identification of formation research experiment

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104614231A (en) * 2015-02-12 2015-05-13 南京工业大学 Loadable stratiform shearing model soil box
CN105115687A (en) * 2015-09-06 2015-12-02 中国石油天然气集团公司 Laminated shearing box
CN106522286A (en) * 2016-10-11 2017-03-22 黑龙江省地震局 Large soil-structure interaction test box
CN107727681A (en) * 2017-09-05 2018-02-23 中国矿业大学 A kind of inclined armoured concrete slab anti-fire test device
CN107727681B (en) * 2017-09-05 2020-12-25 中国矿业大学 Reinforced concrete slab fire resistance test device of slope
CN108005669A (en) * 2018-02-02 2018-05-08 中铁隧道局集团有限公司 A kind of balancing earth-pressure shielding machine analogue experiment installation
CN108316933A (en) * 2018-02-02 2018-07-24 中铁隧道局集团有限公司 A kind of method that native case bankets in balancing earth-pressure shielding machine simulated experiment
CN108374666A (en) * 2018-03-13 2018-08-07 中铁隧道局集团有限公司 The method that native case bankets in earth pressure balanced shield, EPBS identification of formation research experiment

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Granted publication date: 20150617

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