CN103868638A - Frost heaving force measuring device and method - Google Patents
Frost heaving force measuring device and method Download PDFInfo
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- CN103868638A CN103868638A CN201410119083.6A CN201410119083A CN103868638A CN 103868638 A CN103868638 A CN 103868638A CN 201410119083 A CN201410119083 A CN 201410119083A CN 103868638 A CN103868638 A CN 103868638A
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Abstract
Provided are a frost heaving force measuring device and method. The measuring device comprises a base, a connecting shaft, a connecting bolt, a guiding shaft, a transferring rod, a transferring rod protecting pipe, a sensor measuring head, a communication plate, a displacement plate and a limiting plate. The device and method are characterized in that when frost heaving soil generates frost heaving and melting effects and has displacement changing, the displacement plate of the frost heaving force measuring device is driven to have synchronous displacement changing, then the transferring rod is driven to have displacement changing, so that the sensor measuring head of the frost heaving force measuring device is under stress, and the magnitude of force can be measured when the frost heaving soil generates frost heaving and melting effects. The connecting shaft, the guiding shaft and the connecting bolt are added between the base and the transferring rod, the connecting bolt is connected with the connecting shaft and the guiding shaft, a hinge mode is used, the structure is simple, burying mounting is convenient, and the measuring method is quick. Machining is easy, and achieving is easy.
Description
Technical field
The invention belongs to cold district Geotechnical Engineering monitoring technical field; Be specifically related to a kind of frost-heave force measurement mechanism.The invention still further relates to the measuring method of this frost-heave force measurement mechanism.
Background technology
At cold district, the frost heave of frost zone is to cause the main cause of engineering freeze injury.Canal structure, as canal lining body, pumping station forebay etc., is all subject to soil freezed expansion effect in various degree and is damaged.The road of making high class pavement or sand-gravel surface and attached structure thereof, tunnel, retaining wall, walkway and domatic etc., due to the frost heave action producing in soil or rock, usually make these structures suffer larger destruction, cause road breakage, affect the current of vehicle, the serviceable life of also having reduced road simultaneously.
For avoiding frost heaving failure, hydraulic structure General Requirements embedded depth of foundation is below frost line, thereby foundation works amount accounts for the more than 1/3 of whole quantities, but for hydraulic structures such as various lots of canal lining body or river course slope protections, be almost impossible for preventing that frost heave from strengthening embedded depth of foundation from considering economically.For this reason, for reducing quantities and investment, need the correct native frost heave of estimating, be convenient to take the anti-freeze expansion measure of corresponding economical rationality.
Because frozen soil can cause soil expansion, cause that the increase of soil body volume can cause inside soil body pressure to increase, otherwise frozen soil thawing can cause that inside soil body pressure reduces.
No. 201120315253 utility model patents of China, disclose a kind of Frost heave of frozen soil thaw collapse measurement mechanism, and described measurement mechanism comprises: fibre pipe, inductor, data converter, processing unit; In described fibre pipe, be provided with salt solution, inductor is connected with cursory by cursory line, and a cursory part enters in salt solution; Described data converter is connected with inductor, processing unit respectively, the induced signal of inductor is converted to digital signal and sends to processing unit processes.
The Frost heave of frozen soil thaw collapse measurement mechanism of prior art has disturbed the virgin state of frozen soil in the time measuring, and cannot fine prototype measures swelling soil and produces frost heave and melt acting force.Meanwhile, the frost-heave force of frozen soil often can damage the cable of instrument, causes and measures unsuccessfully.
Summary of the invention
The technical matters that will solve required for the present invention is, overcomes existing technological deficiency, and a kind of frost-heave force measurement mechanism is provided, this frost-heave force measurement mechanism can prototype measure swelling soil endure cold and melt after stressed size, and the variation of displacement.The present invention also provides the measuring method of this frost-heave force measurement mechanism.The present invention can prototype measure swelling soil generation frost heave and melt acting force; Can avoid the frost-heave force of frozen soil to damage the cable of instrument simultaneously.
The technical scheme that completes foregoing invention task is, a kind of frost-heave force measurement mechanism, this frost-heave force measurement mechanism is embedded in frozen soil to be measured, it is characterized in that, the base of this frost-heave force measurement mechanism is cast in concrete pier, this base, by transmission lever and sensor connector, connects with a side of transducer probe assembly; The opposite side of described transducer probe assembly, by UNICOM's plate, sensor connector and transmission lever, connects with limited cover and displacement plate.
Structure of the present invention has following prioritization scheme:
1, between base and transmission lever, increase coupling spindle, the axis of guide and an attachment bolt: on base, be fixed with coupling spindle, this coupling spindle connects the axis of guide by attachment bolt, employing be articulated manner, the axis of guide can be by rotated by force direction.
2, be provided with transmission lever protection tube in transmission lever outside.
3, between transmission lever and sensor, connected by UNICOM's plate and sensor connector, the effect that drives displacement plate and transmission lever to produce power when swelling soil generation frost heave and thawing acting force, transmission lever passes to sensor by UNICOM's plate power, so just can measure the frost-heave force that swelling soil produces.
4, sensor of the present invention adopts columniform power sensor.
5, in the middle of UNICOM's plate, be provided with cable aperture; Sensor cable is middle wearing out from the cable aperture in the middle of UNICOM's plate to transmission lever, can well protect instrument cable not damaged.
Swelling soil produces frost heave and thawing effect is subjected to displacement the displacement plate generation synchronous shift variation that drives frost-heave force measurement mechanism while variation, and then drive transmission lever to be subjected to displacement variation, make the transducer probe assembly of frost-heave force measurement mechanism that stressed effect occur, can measure swelling soil and produce frost heave and thawing and do the size of used time power.This measurement mechanism is fixed to transmission lever by base, coupling shaft, the axis of guide and an attachment bolt.Attachment bolt is connecting coupling spindle and the axis of guide, what adopt is articulated manner, the axis of guide can be by rotated by force direction, and connected by UNICOM's plate and sensor connector between transmission lever and sensor, the effect that drives displacement plate and transmission lever to produce power when swelling soil generation frost heave and thawing acting force, transmission lever passes to sensor by UNICOM's plate power, so just can measure the frost-heave force that swelling soil produces.
The technical scheme that completes second goal of the invention of the application is that the measuring method of above-mentioned frost-heave force measurement mechanism, comprises the following steps:
(1). dig a hole in the position that need to carry out swelling soil generation frost heave and the measurement of thawing acting force;
(2). build a concrete pier in the inside, hole of digging, and in the time of casting concrete pier, bury in advance the base of frost-heave force measurement mechanism underground;
(3). wait after concreting initial set, coupling spindle, attachment bolt, the axis of guide, transmission lever, transmission lever protection tube, transducer probe assembly, UNICOM's plate, displacement plate, the limited cover of frost-heave force measurement mechanism is installed successively;
(4). adjusting the axis of guide and attachment bolt, to make transmission lever and swelling soil produce frost heave action power direction of measurement consistent;
(5). backfill swelling soil, the swelling soil the inside that compacting is embedded in the displacement plate of frost-heave force measurement mechanism will to measure.
Repeatedly say, installation method to set up of the present invention is: a hole is dug in the position that need to carry out the measurement of swelling soil generation frost-heave force, in the hole of digging, build a concrete pier, and the base of frost-heave force measurement mechanism is embedded in to concrete pier the inside, complete Deng concreting, after initial set, coupling spindle is installed successively, attachment bolt, the axis of guide, transmission lever, transmission lever protection tube, transducer probe assembly, UNICOM's plate, displacement plate, limited cover, and adjusting on request the axis of guide and attachment bolt, to make transmission lever and swelling soil produce frost heave action power direction of measurement consistent, after installation has been buried underground, hole is filled up, the swelling soil the inside that compacting will measured frost-heave force measurement mechanism displacement plate.
Processing of the present invention is simple, easily realizes.The present invention is mainly: before changing, cannot fine prototype measure the present situation that swelling soil produces frost heave and melts acting force, invent the effective measurement mechanism of a kind of frost-heave force and measuring method thereof, and this measurement mechanism is simple in structure, Embedment and installation is convenient, and measuring method is convenient.The present invention processes simply, also easily realizes.
Accompanying drawing explanation
Fig. 1 is the structural representation of frost-heave force measurement mechanism of the present invention;
Fig. 2 is axis of guide structural representation of the present invention;
Tu3Shi UNICOM of the present invention plate structure schematic diagram.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and concrete case study on implementation, the inventive method is described in further detail.Concrete case study on implementation described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1; frost-heave force measurement mechanism and measuring method thereof; with reference to Fig. 1; need to carry out the position of swelling soil generation frost heave action power measurement and dig a hole; in the hole of digging, build a concrete pier; and the base 1 of frost-heave force measurement mechanism is embedded in to concrete pier the inside, after waiting concreting to complete initial set, coupling spindle 9, attachment bolt 2, the axis of guide 10, transmission lever 4, transmission lever protection tube 3, transducer probe assembly 6, UNICOM's plate 7, displacement plate 8, limited cover 11 are installed successively.Fixed bolt hole 12 by UNICOM's plate 7 between transducer probe assembly 6 and UNICOM's plate 7 closely connects; And adjusting on request the axis of guide 10 and attachment bolt 2, to make transmission lever 4 and swelling soil produce frost heave action power direction of measurement consistent, after installing and having buried underground, hole is filled up to the swelling soil the inside that compacting will measured frost-heave force measurement mechanism displacement plate 8.
With reference to Fig. 2, Fig. 3, between base 1 of the present invention and transmission lever 4, increase a coupling spindle 9, the axis of guide 10 and attachment bolt 2, attachment bolt 2 is connecting coupling spindle 9 and the axis of guide 10, what adopt is articulated manner, the axis of guide 10 can be by rotated by force direction, and connected by UNICOM's plate 7 and sensor connector 5 between transmission lever 4 and sensor 6, the effect that drives displacement plate 8 and transmission lever 4 to produce power when swelling soil generation frost heave and thawing acting force, transmission lever 4 passes to sensor 6 by UNICOM's plate 7 power, so just can measure the frost-heave force that swelling soil produces.The present invention's sensor 6 used adopts columniform power sensor 6, and sensor 6 cables wear out in the middle of transmission lever 4 from the cable aperture 13 in the middle of UNICOM's plate 7, can well protect instrument cable not damaged.
Frost-heave force measurement mechanism processing of the present invention is simple, and Embedment and installation is convenient, and measuring method is convenient.
Claims (7)
1. a frost-heave force measurement mechanism, this frost-heave force measurement mechanism is embedded in frozen soil to be measured, it is characterized in that, and the base of this frost-heave force measurement mechanism is cast in concrete pier, and this base, by transmission lever and sensor connector, connects with a side of transducer probe assembly; The opposite side of described transducer probe assembly, by UNICOM's plate, sensor connector and transmission lever, connects with limited cover and displacement plate.
2. frost-heave force measurement mechanism according to claim 1, it is characterized in that, between base and transmission lever, be provided with coupling spindle, the axis of guide and attachment bolt, its structure is: on base, be fixed with coupling spindle, this coupling spindle connects the axis of guide by attachment bolt, what adopt is articulated manner, and the axis of guide can be by rotated by force direction.
3. frost-heave force measurement mechanism according to claim 1, is characterized in that, is provided with transmission lever protection tube in transmission lever outside.
4. frost-heave force measurement mechanism according to claim 1, is characterized in that, between transmission lever and sensor, is connected by UNICOM's plate and sensor connector.
5. frost-heave force measurement mechanism according to claim 1, is characterized in that, described sensor adopts columniform power sensor.
6. according to the frost-heave force measurement mechanism one of claim 1-5 Suo Shu, it is characterized in that, in the middle of UNICOM's plate, be provided with cable aperture; Sensor cable is middle wearing out from the cable aperture in the middle of UNICOM's plate to transmission lever.
7. the measuring method of frost-heave force measurement mechanism claimed in claim 1, comprises the following steps:
(1). dig a hole in the position that need to carry out swelling soil generation frost heave and the measurement of thawing acting force;
(2). build a concrete pier in the inside, hole of digging, and in the time of casting concrete pier, bury in advance the base of frost-heave force measurement mechanism underground;
(3). wait after concreting initial set, coupling spindle, attachment bolt, the axis of guide, transmission lever, transmission lever protection tube, transducer probe assembly, UNICOM's plate, displacement plate, the limited cover of frost-heave force measurement mechanism is installed successively;
(4). adjusting the axis of guide and attachment bolt, to make transmission lever and swelling soil produce frost heave action power direction of measurement consistent;
(5). backfill swelling soil, the swelling soil the inside that compacting is embedded in the displacement plate of frost-heave force measurement mechanism will to measure.
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| CN201410119083.6A CN103868638B (en) | 2014-03-27 | 2014-03-27 | Frost force measurement device and measuring method thereof |
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| CN201410119083.6A CN103868638B (en) | 2014-03-27 | 2014-03-27 | Frost force measurement device and measuring method thereof |
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| CN103868638A true CN103868638A (en) | 2014-06-18 |
| CN103868638B CN103868638B (en) | 2016-01-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283215A (en) * | 2018-11-26 | 2019-01-29 | 中国地质大学（北京） | The measuring method of tunnel in cold area country rock frost-heave force after multigelation damage |
| CN109868803A (en) * | 2019-03-28 | 2019-06-11 | 哈尔滨工业大学 | A kind of frost heave stress detection device and its detection method |
| CN109931861A (en) * | 2019-03-04 | 2019-06-25 | 中建东设岩土工程有限公司 | A kind of body frost heaving force test method and device |
| CN111562283A (en) * | 2020-06-11 | 2020-08-21 | 水利部交通运输部国家能源局南京水利科学研究院 | Instrument for automatically measuring frost heaving deformation of full section of channel and measuring and mounting method |
| CN113898412A (en) * | 2021-10-13 | 2022-01-07 | 中铁十九局集团有限公司 | Freeze-induced expansion force monitoring method based on subway horizontal freezing |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283215A (en) * | 2018-11-26 | 2019-01-29 | 中国地质大学（北京） | The measuring method of tunnel in cold area country rock frost-heave force after multigelation damage |
| CN109283215B (en) * | 2018-11-26 | 2020-02-07 | 中国地质大学（北京） | Method for measuring and calculating frost heaving force of tunnel surrounding rock in cold region after repeated freeze-thaw damage |
| CN109931861A (en) * | 2019-03-04 | 2019-06-25 | 中建东设岩土工程有限公司 | A kind of body frost heaving force test method and device |
| CN109931861B (en) * | 2019-03-04 | 2024-01-30 | 中建东设岩土工程有限公司 | Soil frost heaving force testing method and device |
| CN109868803A (en) * | 2019-03-28 | 2019-06-11 | 哈尔滨工业大学 | A kind of frost heave stress detection device and its detection method |
| CN109868803B (en) * | 2019-03-28 | 2020-11-24 | 哈尔滨工业大学 | Frost heaving stress detection device and detection method thereof |
| CN111562283A (en) * | 2020-06-11 | 2020-08-21 | 水利部交通运输部国家能源局南京水利科学研究院 | Instrument for automatically measuring frost heaving deformation of full section of channel and measuring and mounting method |
| CN111562283B (en) * | 2020-06-11 | 2022-03-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Instrument for automatically measuring frost heaving deformation of full section of channel and measuring and mounting method |
| CN113898412A (en) * | 2021-10-13 | 2022-01-07 | 中铁十九局集团有限公司 | Freeze-induced expansion force monitoring method based on subway horizontal freezing |
| CN113898412B (en) * | 2021-10-13 | 2023-11-10 | 中铁十九局集团有限公司 | Freeze-swelling force monitoring method based on subway horizontal freezing |
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