CN2071337U - Steel pipe type triaxial strain gauge - Google Patents
Steel pipe type triaxial strain gauge Download PDFInfo
- Publication number
- CN2071337U CN2071337U CN 90209850 CN90209850U CN2071337U CN 2071337 U CN2071337 U CN 2071337U CN 90209850 CN90209850 CN 90209850 CN 90209850 U CN90209850 U CN 90209850U CN 2071337 U CN2071337 U CN 2071337U
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- top cover
- pipe type
- cylinder
- type triaxial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 15
- 239000010959 steel Substances 0.000 title claims abstract description 15
- 238000005259 measurement Methods 0.000 claims description 7
- 239000011888 foil Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 239000000565 sealant Substances 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract description 2
- 230000008014 freezing Effects 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 3
- 235000020004 porter Nutrition 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A steel tube type triaxial strain gauge capable of measuring the magnitude of true three-dimensional stress in a structure body is used for measuring the three-dimensional stress in a concrete structure body, and is more suitable for measuring the three-dimensional stress in a soft rock and soil body solidified by freezing or grouting in underground engineering.
Description
The utility model is a steel pipe type triaxial strain meter, belong to the stress measurement technical field, be used for triaxiality measurement in the concrete body, more be applicable to the interior triaxiality measurement of soft rock soil mass that clean or grouting reinforcement are frozen in the footpath in the underground works, in order to solve concrete pit shaft break accident or other xoncrete structure, grouting reinforcement Rock-soil Mass Structure engineering problem.
The purpose of construction structure body is to bear external force, meanwhile produce different stress distribution in the structure, the size of structure internal stress and the foundation that distributes as structure stability and strength check, if utilize theoretical analysis, numerical evaluation is difficulty truly in the reflect structure body still, the stress intensity in key position or the labyrinth body particularly, and the flat jack of the common use of stress measurement at present can only be measured-Wei stress, measure two-dimensional stress at the most with the concrete internal strain-ga(u)ge unit, measure absolute stress with epoxy resin triaxial strain meter with stress relief method in lithosome, these are the triaxiality size of certain point in the reflect structure body truly all.
The purpose of this utility model is the triaxial strain meter of true triaxiality size in a kind of energy measurement structure of design, several right angles that give on the steel pipe internal face that is embedded in tested point in the structure by stickup add 45 strain rosettes of spending, through the secondary instrument image data, the theoretical formula that proposes according to the present utility model people calculates, concrete Theoretical Calculation is referring to Wu Zhenye and Li Shiping, The Generaliged Plane Strain Problem and its APPlicati in Three Dimensional Stress Measurem ent, Int, J.Rock Mech. Min. Sci Uol 27(1) PP.43-49,1990.
This steel pipe type triaxial strain meter is mainly by garden tube, sloped footing, Gu shallow device, top cover and foil gauge are formed, the garden tube selects for use the metal seamless tubing of linear elasticity, creep resistant excellence to be processed into, the strain rosette that several right angles add 45 degree is pasted on the internal face of garden tube, its payment to a porter is corresponding continuous with the heart yearn of polycore cable, and polycore cable is fixedly clamped by the solidus device inside and outside the tube of garden, and the two ends of garden tube are by sloped footing and top seal.
Compared with prior art, the utility model is the true triaxiality size of interior certain point of reflect structure body truly, can reduce measure dot number more than 2/3, save a large amount of man power and materials, its hermetically-sealed construction has ensured moisture resistant seal of the present utility model, is applicable to implement in the rugged surroundings that contain water under high pressure to measure, and the utility model once placed and contains in the saturation water sand, freeze pressure-bearing 5MP through-30 ℃
Under detect its built-in electrical insulation degree and reach more than 200 megaohms.
Description of drawings:
Fig. 1 is the structural drawing of steel pipe type triaxial strain meter.
Fig. 2 is the A-A sectional view of steel pipe type triaxial strain meter;
Below in conjunction with accompanying drawing, embodiment provided by the utility model done describe in further detail, structure such as Fig. 1 of steel pipe type triaxial strain meter are shown in Figure 2, comprise solidus device 1,7, rubber seal 2, top cover 3, top cover connecting 4, O RunddichtringO 5,9,11,12, garden tube 6, sloped footing 8 and foil gauge 10, garden tube 6 is selected linear elasticity for use, the metal seamless tubing of creep resistant excellence is processed into, several right angles add 45 degree strain rosettes 10, be pasted on the internal face of garden tube 6 by theory requirement orientation, the payment to a porter of strain rosette 10 is joined with the polycore cable heart yearn is corresponding, solidus device 1,7 use bolt and the spacers outside and the inboard at top cover 3 respectively, be used for clamping polycore cable, top cover 3 again with bolted on the top cover connecting 4 of ring-type, top cover connecting 4 and garden tube 6 are by being weldingly connected, in all parts junctions the O RunddichtringO is set, guarantees the sealing effectiveness of tube inside, garden.O RunddichtringO 5,12,11,9 plays cable respectively and cable passes part solidus device 1, top cover 3, the sealing that 4 of top cover web members and top cover 3 and top cover web member are 4, sloped footing 8 links to each other with the other end sealing of garden tube 6, and surface of contact cooperates with fluid sealant, and strengthens sealing by O-ring seal.
When construction structure, in the time of placing concrete, steel pipe type triaxial strain meter given be embedded in tested point, make the telltale mark on it consistent with the change in coordinate axis direction that users select, cable is from appropriate location deriving structure thing, the detected part works is fixed fully, and by the timely image data of secondary instrument, the theoretical formula that proposes by the present utility model people is calculated the triaxiality size that can learn this measuring point in the works then.
Claims (4)
1, a kind of can the measurement structure body in true triaxiality steel pipe type triaxial strain meter, it is characterized in that this steel pipe type triaxial strain meter, comprise solidus device 1,7, top cover 3, top cover connecting 4, cylinder 6, sloped footing 8 and foil gauge 10, several foil gauges 10 are pasted on the internal face of cylinder 6, solidus device 1,7 is separately fixed at the outside and the inboard of top cover 3, be used for clamping polycore cable, top cover 3 again with bolted on top cover connecting 4, top cover connecting 4 and cylinder 6 are by being weldingly connected, and sloped footing 8 is connected with the other end sealing of cylinder 6.
2, steel pipe type triaxial strain meter according to claim 1 is characterized in that cylinder 6 adopts the metal seamless tubing of linear elasticity, creep resistant excellence to be processed into.
3, steel pipe type triaxial strain meter according to claim 1, it is characterized in that foil gauge 10 select for use the right angle add 45 the degree strain rosettes.
4, steel pipe type triaxial strain meter according to claim 1 is characterized in that the junction of passing part at all cables is provided with O-ring seal, cooperates with fluid sealant between the surface of contact of sloped footing 8 and cylinder 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90209850 CN2071337U (en) | 1990-07-05 | 1990-07-05 | Steel pipe type triaxial strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90209850 CN2071337U (en) | 1990-07-05 | 1990-07-05 | Steel pipe type triaxial strain gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2071337U true CN2071337U (en) | 1991-02-13 |
Family
ID=4889830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90209850 Withdrawn CN2071337U (en) | 1990-07-05 | 1990-07-05 | Steel pipe type triaxial strain gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2071337U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532899B (en) * | 2009-04-07 | 2011-05-11 | 奇瑞汽车股份有限公司 | Measuring device for rotary inertia of steering wheel and measuring method thereof |
| CN102661869A (en) * | 2012-04-18 | 2012-09-12 | 清华大学 | Method for measuring rotational inertia and damping parameter of steering control mechanism of automobile |
| CN102661868A (en) * | 2012-04-18 | 2012-09-12 | 清华大学 | Measuring method of rotating inertia and damping parameter of automobile steering control mechanism |
| CN104991043A (en) * | 2015-08-10 | 2015-10-21 | 河南理工大学 | Water-flowing fractured zone height observing device and method used in three-dimensional similar material simulation experiment |
| CN106996841A (en) * | 2017-05-27 | 2017-08-01 | 吉林大学 | With being in harmony the hole drilling type optical fiber three-dimensional ground stress observation device of function certainly |
-
1990
- 1990-07-05 CN CN 90209850 patent/CN2071337U/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532899B (en) * | 2009-04-07 | 2011-05-11 | 奇瑞汽车股份有限公司 | Measuring device for rotary inertia of steering wheel and measuring method thereof |
| CN102661869A (en) * | 2012-04-18 | 2012-09-12 | 清华大学 | Method for measuring rotational inertia and damping parameter of steering control mechanism of automobile |
| CN102661868A (en) * | 2012-04-18 | 2012-09-12 | 清华大学 | Measuring method of rotating inertia and damping parameter of automobile steering control mechanism |
| CN102661869B (en) * | 2012-04-18 | 2013-06-12 | 清华大学 | Method for measuring rotational inertia and damping parameter of steering control mechanism of automobile |
| CN102661868B (en) * | 2012-04-18 | 2013-08-07 | 清华大学 | Measuring method of rotating inertia and damping parameter of automobile steering control mechanism |
| CN104991043A (en) * | 2015-08-10 | 2015-10-21 | 河南理工大学 | Water-flowing fractured zone height observing device and method used in three-dimensional similar material simulation experiment |
| CN106996841A (en) * | 2017-05-27 | 2017-08-01 | 吉林大学 | With being in harmony the hole drilling type optical fiber three-dimensional ground stress observation device of function certainly |
| CN106996841B (en) * | 2017-05-27 | 2022-11-22 | 吉林大学 | Drilling type optical fiber three-dimensional ground stress observation device with self-consistent function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |