CN204479570U - A kind of device for fast detecting being applicable to saliferous clay frost heave and molten sunken property - Google Patents
A kind of device for fast detecting being applicable to saliferous clay frost heave and molten sunken property Download PDFInfo
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- CN204479570U CN204479570U CN201520032690.9U CN201520032690U CN204479570U CN 204479570 U CN204479570 U CN 204479570U CN 201520032690 U CN201520032690 U CN 201520032690U CN 204479570 U CN204479570 U CN 204479570U
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Abstract
The utility model belongs to civil engineering plant field, relates to the device for fast detecting of a kind of frost heave to natural salt dirting soil and molten sunken property.Primarily of Di temperature Xi Tong ﹑ test device systematic and measurement system composition, measure natural salt dirting soil frost heave and molten fall into etc. engineering properties.Described cryogenic system provides low-temperature receiver primarily of cryostat, constantly reduces the temperature of pilot system; Described test device systematic is the freezing and thawing test case be made by stainless steel material and polythene material; Test specimen tube is embedded in sample upper box part, and fixed amount measuring staff is arranged at sample top, and scale measures bar and is fixed on the edge of chamber, by testing the fixed amount measuring staff at top and the contrast measuring scale bar, determines the characteristics such as the frost heave of natural salt dirting soil and molten sunken property; The utility model apparatus structure is simple, solves the difficult problem in the past measuring saliferous clay frost heave and molten sunken property, for the engineering construction of extremely frigid zones saliferous clay provides Reasonable Parameters.
Description
Technical field
The utility model belongs to civil engineering plant field, and particularly a kind of frost heave to natural salt dirting soil and molten sunken property carry out the device of detection fast.
Background technology
Saliferous clay is widely distributed in China, and along with the construction on a large scale of foundation works, the engineering characteristic of further investigation natural salt dirting soil progressively becomes a hot issue.Natural salt dirting soil causes wprks to be owing to having the molten sunken property of stronger frost heave ﹑ etc., in order to understand the engineering properties of saliferous clay better, solve in all kinds of construction work the destructive problem suffering from saliferous clay, need to carry out Integrated Analysis of Multi-Factors Involved research regulation to the disease problem of saliferous clay, but in engineering properties test, also there is no special instrument and equipment at present.So development one under indoor freezing and thawing cycling condition to the frost heave of natural salt dirting soil and molten sunken property device for fast detecting necessary.
Disclose according to document: 1. to open army gorgeous etc. for the flat ﹑ in Chang An University's height river Li Zhi agriculture ﹑, application number be 200620079389.4 " lever-loading low temperature Large-scale Salt is swollen test instrument " utility model patent be the deficiency existed for current existing measuring technology, there is provided the mono-﹑ of a kind of Jie structure Jian easy to operate, the swollen test instrument of lever-loading low temperature Large-scale Salt that consolidation and saliferous clay multifactor impact law study can carry out simultaneously; 2. square Liu ﹑ in Shanghai University of Science and Technology Wang Peng ﹑ gold side becomes clear, application number is the measurement mechanism that " the Frost heave of frozen soil thaw collapse device " of 201120315253.X provides a kind of Frost heave of frozen soil thaw collapse, the blank that frozen swell and melt settlement is measured can be filled up, engineering construction for Frozen Ground Area provides geologic information specifically, reduces freeze injury to the impact of structure foundation; 3. the application number of Zhang Kun ﹑ week shore is " many degree of depth Frost heave of frozen soil thaw collapse measuring instrument " utility model patent of 2012220438574.3, effectively can not carry out data acquisition to the frozen soil layer of difference different depth for current Frost heave of frozen soil thaw collapse measurement mechanism simultaneously, the problem of practical effect difference, and then a kind of Frost heave of frozen soil thaw collapse measuring instrument is provided.
The related equipment of the comprehensive analysis domestic and international frost heave about speciality soil such as saliferous clay and molten sunken property detection at present, comparatively backwardness in general, but the frost heave of saliferous clay and molten sunken property endanger very large to the ground of construction work, so how correctly to differentiate that frost heave and the molten sunken infringement to structure foundation and the molten sunken amount of Measurement accuracy frost heave are of great immediate significance, therefore the device developing a kind of frost heave and molten sunken property that can measure saliferous clay seems particularly important, can preferably for the engineering construction of saline soil area provides brute force technique support.
Summary of the invention
The purpose of this utility model is to provide a kind of device for fast detecting being applicable to saliferous clay frost heave and molten sunken property, the blank of high severe cold area saliferous clay frost heave and molten sunken property measurement can be filled up, engineering construction construction for saline soil area provides engineering data specifically, reduces the molten impact fallen into structure foundation of Dong Zhang ﹑.
For solving above-mentioned technical matters, the utility model have employed following technical scheme.
Be applicable to a device for fast detecting for saliferous clay frost heave and molten sunken property, described measurement mechanism mainly comprises: freezing and thawing test Xiang ﹑ cryostat and between associated line composition; Be set to Sample devices in described freezing and thawing test upper box part, be screwed in top; Described cryostat is connected with freezing and thawing test case by pipeline, and realizing provides stationary temperature to freezing and thawing test case.
Described freezing and thawing test case is for by after carrying out Frozen-thawed cycled to test specimen, test specimen will occur frost heave or molten fall into etc. character, test piece upper part push rod will there is height change, contrasting by measuring bar with fixing scale on Frozen-thawed cycled, the variable quantity of height of specimen can be judged.
Described freezing and thawing test case is rectangular shape, is made by stainless steel material, and inner laying one deck polystyrene thermal insulation plate, realizes carrying out heat insulation process to casing.
The push rod of described test piece upper part is formed by plastic production, can reach the effect of thermal insulation on the one hand; On the other hand due to lighter weight, the precision that test specimen frost heave and molten sunken property are measured can be improved.
Described cryostat is the ready-made Cryo Equipment purchased, and requirements meets the basic demand of country.
This device can carry out the detection of 4 samples simultaneously, can raise the efficiency on the one hand; On the other hand can economize energy, simple to operate, test is convenient.
The utility model has the advantage of: the frost heave of saliferous clay and the mechanics parameter of molten sunken property can be measured by simulating natural environment rapidly, fill up the problem that high severe cold area natural salt dirting soil measures frost heave and molten sunken property difficult parameters, for saline soil area engineering construction provides engineering data specifically, reduce salt frost heave and molten destruction of falling into buildings.
Accompanying drawing explanation
Fig. 1 is saliferous clay frost heave and molten sunken property pick-up unit connection diagram.
Fig. 2 is saliferous clay freezing and thawing test case cut-away view.
Fig. 3 is saliferous clay test piece fixing device vertical view.
Fig. 4 is saliferous clay test specimen top fixation measuring bar schematic diagram.
Wherein: 1. scale measures bar, 2. test specimen top fixation measuring bar, 3. freezing and thawing test case, 4. specimen appliance test specimen tube, 5. pipeline on chamber recyclegas, 6. chamber recyclegas underground pipelines, 7. cryostat.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
As illustrated in the accompanying drawings from 1 to 3, be applicable to a device for fast detecting for saliferous clay frost heave and molten sunken property, mainly comprise: (pipeline (5) and underground pipelines (6) composition on recyclegas are carried out in 3) ﹑ cryostats (7) and connection between the two to freezing and thawing test case; Described cryostat (7) directly connects power supply, provides cryogenic gas to chamber (3).
Described cryostat (7) cryogenic gas input freezing and thawing test case (3) by underground pipelines (6), is then got back to cryostat (7) by upper pipeline (5), is realized controlling the temperature of freezing and thawing test case (3).
After test specimen charging apparatus test specimen tube (4), inner due to freezing and thawing test case (3) by screw build-in, confirm to keep sealing between test specimen tube (4) and casing.
Carrying out in freezing and thawing test process, to the change of height be there is in sample, the sounding rod (2) that sample top is fixed also will along with changing, measure bar (1) by the scale fixing with freezing and thawing test case (3) top to contrast, the relative variation of sample in each Frozen-thawed cycled process can be judged.
The utility model saliferous clay frost heave and molten sunken property pick-up unit can carry out according to the following step:
(1) before the test, cryostat connects power supply, and carry out the trial run tested, can check test equipment normally work;
(2) after determining that test unit can carry out work, studied saliferous clay is loaded in test specimen tube by the relative density required by test, then sample put into freezing and thawing test case inside and be screwed, between guaranteeing, keeping sealing;
(3) height of sample top sounding rod when record starts, opens cryostat, carries out thawing cyclic test to sample;
(4) record the height of push rod after each Frozen-thawed cycled, calculate relative variation respectively, analyze the relation of frost heave and molten sunken property and number of freezing and thawing.
In sum, the device for fast detecting of the saliferous clay frost heave that the utility model proposes and molten sunken property, there is stronger applicability, the frost heave of saliferous clay and the blank of molten sunken property measurement aspect are filled up, engineering construction for saline soil area provides geologic information specifically, reduces saliferous clay to the destruction of engineering foundation facility.
Claims (2)
1. be applicable to a device for fast detecting for saliferous clay frost heave and molten sunken property, it is characterized in that mainly comprising: freezing and thawing test case (3) ﹑ cryostat (7) and between associated line composition;
Be set to Sample devices (4) in described freezing and thawing test case (3) top, be screwed in top; Described cryostat (7) is connected with freezing and thawing test case (3) by pipeline, and realizing provides stationary temperature to freezing and thawing test case (3);
Described freezing and thawing test case (3) is rectangular shape, is made by stainless steel material, and inner laying one deck polystyrene thermal insulation plate, realizes carrying out heat insulation process to casing;
The push rod (2) of test piece upper part is formed by plastic production, can reach the effect of thermal insulation on the one hand, on the other hand due to lighter weight, can improve the precision measured test specimen frost heave and molten sunken property.
2. device for fast detecting according to claim 1, is characterized by the ready-made Cryo Equipment of cryostat (7) for purchasing, and requirements meets the basic demand of country.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520032690.9U CN204479570U (en) | 2015-01-17 | 2015-01-17 | A kind of device for fast detecting being applicable to saliferous clay frost heave and molten sunken property |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520032690.9U CN204479570U (en) | 2015-01-17 | 2015-01-17 | A kind of device for fast detecting being applicable to saliferous clay frost heave and molten sunken property |
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| CN204479570U true CN204479570U (en) | 2015-07-15 |
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| CN201520032690.9U Expired - Fee Related CN204479570U (en) | 2015-01-17 | 2015-01-17 | A kind of device for fast detecting being applicable to saliferous clay frost heave and molten sunken property |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107840168A (en) * | 2016-09-19 | 2018-03-27 | 新疆维吾尔自治区农牧区水利规划总站 | A kind of shallow embedding formula drip irrigation hose storing machine |
| CN109490353A (en) * | 2018-11-09 | 2019-03-19 | 中铁二院工程集团有限责任公司 | A kind of salt marsh earth salt-frost-heave force with high salt determines method |
| CN109865538A (en) * | 2019-03-13 | 2019-06-11 | 四川农业大学 | A kind of soil freezed expansion Rule experimental box convenient for measuring volume |
| CN109884268A (en) * | 2019-01-16 | 2019-06-14 | 东北农业大学 | The non-disturbance seasonal frozen ground freeze thawing depth monitor of one kind and method |
| CN110618254A (en) * | 2019-10-22 | 2019-12-27 | 中铁七局集团第三工程有限公司 | Test device for measuring saline soil collapsibility |
-
2015
- 2015-01-17 CN CN201520032690.9U patent/CN204479570U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107840168A (en) * | 2016-09-19 | 2018-03-27 | 新疆维吾尔自治区农牧区水利规划总站 | A kind of shallow embedding formula drip irrigation hose storing machine |
| CN109490353A (en) * | 2018-11-09 | 2019-03-19 | 中铁二院工程集团有限责任公司 | A kind of salt marsh earth salt-frost-heave force with high salt determines method |
| CN109490353B (en) * | 2018-11-09 | 2021-02-02 | 中铁二院工程集团有限责任公司 | Determination method for salt-frost heaving force of high-salinity saline soil |
| CN109884268A (en) * | 2019-01-16 | 2019-06-14 | 东北农业大学 | The non-disturbance seasonal frozen ground freeze thawing depth monitor of one kind and method |
| CN109884268B (en) * | 2019-01-16 | 2021-09-21 | 东北农业大学 | Non-disturbance device and method for monitoring freezing and thawing depth of frozen soil in seasons |
| CN109865538A (en) * | 2019-03-13 | 2019-06-11 | 四川农业大学 | A kind of soil freezed expansion Rule experimental box convenient for measuring volume |
| CN110618254A (en) * | 2019-10-22 | 2019-12-27 | 中铁七局集团第三工程有限公司 | Test device for measuring saline soil collapsibility |
| CN110618254B (en) * | 2019-10-22 | 2021-11-23 | 中铁七局集团第三工程有限公司 | Test device for measuring saline soil collapsibility |
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| 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: 20150715 Termination date: 20160117 |
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| EXPY | Termination of patent right or utility model |