CN105158441B - The device of drying and watering cycle is carried out in a kind of model engineering in the case of soil body bearing load - Google Patents
The device of drying and watering cycle is carried out in a kind of model engineering in the case of soil body bearing load Download PDFInfo
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- CN105158441B CN105158441B CN201510597803.4A CN201510597803A CN105158441B CN 105158441 B CN105158441 B CN 105158441B CN 201510597803 A CN201510597803 A CN 201510597803A CN 105158441 B CN105158441 B CN 105158441B
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- vertical rod
- retainer ring
- cover plate
- ring
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Abstract
The invention discloses the device that drying and watering cycle is carried out in the case of soil body bearing load in a kind of model engineering.The device includes nut, retainer ring, vertical rod, lower shoe, lower shoe osculum, cutting ring, right-angled intersection rib, upper cover plate and upper cover plate osculum, and vertical rod total length is fixedly linked with screw thread and with lower shoe；The upper end of right-angled intersection rib is bigger than retainer ring external diameter 1 centimetre on upper cover plate；Retainer ring internal diameter is slightly larger than cutting ring external diameter, is easy to cutting ring to be put into, four vertical slots of diagonal position setting on retainer ring ring wall, and the screw thread of vertical slot internal thread and vertical rod is mutually twisted, and the screw thread of nut inner thread and vertical rod is mutually twisted；Whole device material is the small duroplasts of strength high density.Apparatus of the present invention material cheap and simple, easy to operate, simulation stressing conditions actually, are easily grasped close to engineering, are easy to engineering application.
Description
Technical field
The invention belongs to Geotechnical Engineering experiment and engineering application technical field, the soil body is held in more particularly to a kind of model engineering
By the device that drying and watering cycle is carried out in the case of load.
Background technology
Drying and watering cycle effect has on properties such as intensity, the modulus of the soil body to be significantly affected, and soil body drying and watering cycle is also ground
One of the problem of engineering extensive concern.Currently for soil body drying and watering cycle process research it is main by large volume model experiment and
Laboratory small volumes of sample experiment is carried out.And the earth stress situation that current experimental provision is simulated and engineering it is actual differ compared with
Greatly, it is primarily present following limitation：(1) sample drying and watering cycle process is carried out on direct shear apparatus, after moisture content is by failure by shear
Sample measurement, it is impossible to accurate Control Assay moisture content in real time；Sample parcel is tight, and drying and watering cycle process is slow；(2) sample exists
Without drying and watering cycle process is carried out under restrained condition, first make compared with bulk specimen, make cutting ring sample after the completion of drying and watering cycle again, to examination
Sample forms multiple disturbance, influences experimental result.
The content of the invention
It is an object of the invention to provide the dress that drying and watering cycle is carried out in the case of soil body bearing load in a kind of model engineering
Put, to solve the problems mentioned in the above background technology.
What the present invention was realized in：The dress of drying and watering cycle is carried out in a kind of model engineering in the case of soil body bearing load
Put, including nut, retainer ring, vertical rod, lower shoe, lower shoe osculum, cutting ring, right-angled intersection rib, upper cover plate and upper cover plate row
Water hole, vertical rod total length is fixedly linked with screw thread and with lower shoe；The upper end of right-angled intersection rib is than retainer ring external diameter on upper cover plate
It is big 1 centimetre；Retainer ring internal diameter is slightly larger than cutting ring external diameter, is easy to cutting ring to be put into, and diagonal position sets four to erect on retainer ring ring wall
The screw thread of groove, vertical slot internal thread and vertical rod is mutually twisted, and the screw thread of nut inner thread and vertical rod is mutually twisted；Whole device material
For the small duroplasts of strength high density.
The preferred PEEK plastics of the small duroplasts of above-mentioned strength high density.
Apparatus of the present invention material cheap and simple, easy to operate, simulation stressing conditions actually, are easily grasped close to engineering, are easy to
Engineering application.
Brief description of the drawings
Fig. 1 is retainer ring front view in apparatus of the present invention.
Fig. 2 is retainer ring top view in apparatus of the present invention.
Fig. 3 is upper cover plate and right-angled intersection rib front view in apparatus of the present invention.
Fig. 4 is upper cover plate and right-angled intersection rib top view in apparatus of the present invention.
It is used for the schematic device of vertical strain testing in Fig. 5 embodiment of the present invention.
Marked in figure：1- nuts；2- retainer rings；3- vertical rods；4- lower shoes；5- lower shoe osculums；6- cutting rings；7- crosses
Intersect rib；8- upper cover plates；9- upper cover plate osculums；10- dial gauges；11- Magnetic gauge stands；12- samples.
Embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with accompanying drawing, so that advantages and features of the invention
It can be more easy to be readily appreciated by one skilled in the art, apparent clearly be defined so as to be made to protection scope of the present invention.
Embodiment：
In a kind of model engineering in the case of soil body bearing load carry out drying and watering cycle device, including nut 1, retainer ring 2,
Vertical rod 3, lower shoe 4, lower shoe osculum 5, cutting ring 6, right-angled intersection rib 7, upper cover plate 8 and upper cover plate osculum 9, vertical rod 3 are complete
It is long to have screw thread and be fixedly linked with lower shoe 4；The upper end of right-angled intersection rib 7 is bigger than the external diameter of retainer ring 21 centimetre on upper cover plate 8；
The internal diameter of retainer ring 2 is slightly larger than the external diameter of cutting ring 6, is easy to cutting ring 6 to be put into, and diagonal position sets four vertical slots on the ring wall of retainer ring 2, erects
Groove internal thread and the screw thread of vertical rod 3 are mutually twisted, and the internal thread of nut 1 and the screw thread of vertical rod 3 are mutually twisted；Whole device material is
PEEK plastics.
The specific experiment method of the present embodiment device is according to following steps：
First, make the cutting ring sample 12 of required moisture content according to planning of experiments, the top and bottom of sample 12 respectively put two layers and
The big silk quality gauze of the grade of sample 12, to prevent grogs to be lost in, sample 12 is put on lower shoe 4 together with cutting ring 6.
Second, by the cover alignment of upper cover plate 8 to sample 12, retainer ring 2 is put into the right-angled intersection of upper cover plate 8 through vertical rod 3
On rib 7, nut 1 is screwed to the apical position of vertical rod 3, and the weight for weighing whole device is designated as M0.
3rd, as shown in figure 5, the measuring head of dial gauge 10 is arranged on the right-angled intersection rib 7 of upper cover plate 8, and set
Initial value, the vertical strain of sample 12 is measured with this.
4th, required according to the class of loading of planning of experiments, with counterweight, preloading applies pressure on upper cover plate 8, works as sample
12 are compressed by vertical load, and retainer ring 2 is with the slide downward of upper cover plate 8, and now sample 12 is i.e. by hoop constraint power, and is pressed
Power, simulates engineering actual loading situation.
5th, simulation soil body dehydration process is realized by controlling soil moisture content, allows soil body moisture freely to evaporate, every
The numerical value of certain time record dial gauge 10 simultaneously measures the weight of sample 12 to calculate the moisture content of now sample 12.
6th, when weighing, dial gauge 10 is removed, nut 1 is screwed to along vertical rod 3 and is in close contact with retainer ring 2, to prevent from unloading
Go the resilience of sample 12 after counterweight vertical load；The load on upper cover plate 8 is unloaded, whole device is placed on balance and weighs quality
M1, is soil body moisture variable quantity according to the difference (M0-M1) weighed twice, so as to calculate the water-cut variation feelings of sample 12
Condition；Due to the constraint of retainer ring 2, upper cover plate 8 is unable to resilience, and sample 12 is still in pressured state when weighing, and whole process is not deposited
In unloading.
7th, during simulation soil body water absorption course, in the curing box that device is placed in setting humidity, moisture is fully infiltrated into examination
Sample 12；The numerical value of dial gauge 10 is recorded at regular intervals and is weighed with the 6th step methods described calculates the moisture content of sample 12,
So as to reach soil body dry and wet experiment is carried out in the case of accurately control moisture content.
Claims (2)
1. the device of drying and watering cycle is carried out in a kind of model engineering in the case of soil body bearing load, it is characterised in that the device includes
Nut (1), retainer ring (2), vertical rod (3), lower shoe (4), lower shoe osculum (5), cutting ring (6), right-angled intersection rib (7), on
Cover plate (8) and upper cover plate osculum (9), vertical rod (3) total length are fixedly linked with screw thread and with lower shoe (4)；On upper cover plate (8)
The upper end of right-angled intersection rib (7) is bigger 1 centimetre than retainer ring (2) external diameter；Retainer ring (2) internal diameter is slightly larger than cutting ring (6) external diameter, is easy to
Cutting ring (6) is put into, and diagonal position sets four vertical slots on retainer ring (2) ring wall, and vertical slot internal thread and the screw thread of vertical rod (3) are mutual
Occlusion, nut (1) internal thread and the screw thread of vertical rod (3) are mutually twisted；Whole device material is the small duroplasts of strength high density.
2. the device of drying and watering cycle, its feature are carried out in model engineering as claimed in claim 1 in the case of soil body bearing load
It is PEEK plastics to be the small duroplasts of the strength high density.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510597803.4A CN105158441B (en) | 2015-09-19 | 2015-09-19 | The device of drying and watering cycle is carried out in a kind of model engineering in the case of soil body bearing load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510597803.4A CN105158441B (en) | 2015-09-19 | 2015-09-19 | The device of drying and watering cycle is carried out in a kind of model engineering in the case of soil body bearing load |
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| Publication Number | Publication Date |
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| CN105158441A CN105158441A (en) | 2015-12-16 |
| CN105158441B true CN105158441B (en) | 2017-10-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105716939A (en) * | 2016-04-01 | 2016-06-29 | 桂林理工大学 | Device for performing wetting-drying circulation and direct shear test for simulation of soil bearing load condition |
| CN105865938A (en) * | 2016-04-01 | 2016-08-17 | 桂林理工大学 | Method for conducting dry-wet cycle and direct shear test on simulated load-bearing soil |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104634714A (en) * | 2013-11-13 | 2015-05-20 | 中国石油天然气集团公司 | Impact osmometer and operating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2439559C1 (en) * | 2010-06-07 | 2012-01-10 | Федеральное государственное образовательное учреждение высшего профессионального образования "Новочеркасская государственная мелиоративная академия" ФГОУ ВПО НГМА | Method for determining soil moisture |
| CN201780238U (en) * | 2010-09-03 | 2011-03-30 | 中国水电顾问集团昆明勘测设计研究院 | Creep apparatus for concrete subject to pressure |
| CN102393354B (en) * | 2011-10-20 | 2014-06-25 | 上海交通大学 | Intelligent soil engineering shear rheometer |
| CN202814778U (en) * | 2012-06-29 | 2013-03-20 | 哈尔滨工程大学 | Concrete experiment loading device under coupling effect of load and multiple factors |
| CN103234473A (en) * | 2013-04-12 | 2013-08-07 | 哈尔滨工业大学深圳研究生院 | Test device and test method of seepage force model allowing for observation of inside of soil body |
| CN203232030U (en) * | 2013-05-08 | 2013-10-09 | 山东大学 | Dry-wet cyclic swelling-shrinkage measuring device for non-load swelling soil |
| CN203824882U (en) * | 2014-03-28 | 2014-09-10 | 河海大学 | Accelerated durability testing device for drying and watering cycle in quantitatively simulated natural environment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104634714A (en) * | 2013-11-13 | 2015-05-20 | 中国石油天然气集团公司 | Impact osmometer and operating method |
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Application publication date: 20151216 Assignee: Guilin Yunshui Engineering Consulting Co.,Ltd. Assignor: GUILIN University OF TECHNOLOGY Contract record no.: X2022450000124 Denomination of invention: A device for simulating the drying and wetting cycles of soil under load in engineering Granted publication date: 20171010 License type: Common License Record date: 20221123 |