CN104075829A - Novel vibrating wire type concrete pressure stress meter - Google Patents
Novel vibrating wire type concrete pressure stress meter Download PDFInfo
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- CN104075829A CN104075829A CN201410308398.5A CN201410308398A CN104075829A CN 104075829 A CN104075829 A CN 104075829A CN 201410308398 A CN201410308398 A CN 201410308398A CN 104075829 A CN104075829 A CN 104075829A
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Abstract
The invention discloses a novel vibrating wire type concrete pressure stress meter. The novel vibrating wire type concrete pressure stress meter is characterized by comprising a round pressure transmitting body and a wire type pressure sensor connected with the round pressure transmitting body, and the ratio of the thickness of the round pressure transmitting body to the diameter of the round pressure transmitting body is 1/15; the pressure sensor comprises a shell, a steel wire fixing part and a steel wire installed on the steel wire fixing part; the round pressure transmitting body comprises an upper pressure transmitting plate, a lower pressure transmitting plate and a pressure transmitting liquid cavity located between the upper pressure transmitting plate and the lower pressure transmitting plate, and the ratio of the thickness of the pressure transmitting liquid cavity to that of the round pressure transmitting body is 3/100. The novel vibrating wire type concrete pressure stress meter has the advantages that the round pressure transmitting body is adopted, the ratio of the thickness of the round pressure transmitting body to the diameter of the round pressure transmitting body is 1/15, and measured concrete pressure stress error is small due to the structure; meanwhile, the ratio of the thickness of the pressure transmitting liquid cavity to that of the round pressure transmitting body is 3/100, and therefore it is guaranteed that the temperature compensation coefficient of the instrument is small; the pressure stress meter of the structure can accurately measure the concrete pressure stress in concrete large in temperature change and size.
Description
Technical field
The present invention relates to a kind of novel type vibration wire concrete pressure cell, belong to mechanical technology field.
Background technology
The type vibration wire concrete pressure cell of producing is at present mainly used in the measurement of lining concrete in tunnel concrete compressive stress.Instrument is that two rectangular thin plate surroundings are welded, and between two plates, gap is minimum, and fills accommodating pressure-transmitting liquid, and taseometer upper plate is connected with vibrating wire pressure sensor with a pressure tube, and sensor afterbody stretches out a very long forcing pipe (as shown in Figure 1) simultaneously.Taseometer is embedded in concrete lining, or is embedded between concrete and tunnel wall.General sprayed concrete is built complete, treats because of hydration heat of concrete, and temperature declines, and between concrete and instrument pressure transmission plate, produces space.Now plus-pressure on forcing pipe, after contacting completely, starts to survey concrete compressive stress to pressure transmission plate with concrete space.Although this instrument physical dimension is very thin, because pressure transmission liquid temp coefficient is large, caused instrument temperature penalty coefficient large, thereby can not be accurately directly in concrete, particularly in mass concrete, measure concrete compressive stress.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of precision high, apply wide concrete pressure cell.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
A kind of novel type vibration wire concrete pressure cell, is characterized in that, comprise circular pressure transmission body and the string formula pressure transducer being connected with described circular pressure transmission body, thickness and the diameter ratio of described circular pressure transmission body are less than 1/15; Described pressure transducer comprises shell, is positioned at the fixation with steel wire part of described enclosure and is arranged on the steel wire on described fixation with steel wire part; Described circular pressure transmission body comprises uploads pressing plate, lower pressure transmission plate and in described accommodating pressure-transmitting liquid chamber of uploading between pressing plate and lower pressure transmission plate, the thickness in described accommodating pressure-transmitting liquid chamber is less than 3/100 with the ratio of circular pressure transmission body thickness; Described accommodating pressure-transmitting liquid is provided with pressure transmission liquid in chamber; Described in being arranged on, uploads on pressing plate by described pressure transducer.
The novel type vibration wire concrete of aforesaid one pressure cell, is characterized in that, described in upload and on pressing plate, be provided with pressure transmission film.
The novel type vibration wire concrete of aforesaid one pressure cell, is characterized in that, described steel wire is connected with described pressure transmission film.
The novel type vibration wire concrete of aforesaid one pressure cell, is characterized in that, described pressure transmission film adopts flexible sheet.
The novel type vibration wire concrete of aforesaid one pressure cell, is characterized in that, between described pressure transducer and circular pressure transmission body, adopts Sealing Technology.
The novel type vibration wire concrete of aforesaid one pressure cell, is characterized in that, described pressure transducer is vertically mounted on the middle part of described circular pressure transmission body.
The beneficial effect that the present invention reaches: the present invention adopts circular pressure transmission body, and its thickness and diameter ratio are less than 1/15, from mechanical analysis, the measurement concrete compressive stress error of this structure is less.Meanwhile, accommodating pressure-transmitting liquid chamber thickness is less than 3/100 with the ratio of pressure transmission body thickness, ensures that like this instrument temperature penalty coefficient is less.This structure pressure cell can be large in temperature variation, the concrete compressive stress of Measurement accuracy in mass concrete.This device is installed string formula pressure transducer, can take two kinds of mounting meanss according to actual conditions, and one is a pressure transmission film to be set uploading on pressing plate, and steel wire one end of string formula pressure transducer is connected on pressure transmission film.Another kind is directly string formula pressure transducer to be arranged on pressure transmission body, flexible and changeable, simple in structure.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the present of invention;
Fig. 2 is the structural representation of an alternative embodiment of the invention;
Fig. 3 is the structural representation of existing product.
The implication of Reference numeral in figure:
1-shell, 2-fixation with steel wire part, 3-steel wire, 4-uploads pressing plate, 5-accommodating pressure-transmitting liquid chamber, pressure transmission plate under 6-, 7-pressure tube, 8-forcing pipe.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.Following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.
A kind of novel type vibration wire concrete pressure cell, comprises circular pressure transmission body chord type pressure transducer.
As shown in Figure 1, thickness and the diameter ratio of circular pressure transmission body are less than 1/15, and from mechanics measurement of angle, the measurement concrete compressive stress error of this physical dimension is less.
Circular pressure transmission body comprises uploads pressing plate 4, lower pressure transmission plate 6 and accommodating pressure-transmitting liquid chamber 5..Is uploading between pressing plate 4 and lower pressure transmission plate 6 in accommodating pressure-transmitting liquid chamber 5, and pressure transmission liquid is equipped with in the inside.The thickness in accommodating pressure-transmitting liquid chamber 5 is less than 3/100 with the ratio of circular pressure transmission body thickness, and such ratio can ensure that instrument temperature penalty coefficient is less, can make measured value more accurate, is not subject to the interference of extraneous factor.Between pressure transducer and circular pressure transmission body, adopt Sealing Technology, thereby ensure that pressure transmission liquid is non-leakage.
Pressure transducer comprises shell 1, fixation with steel wire part 2 and steel wire 3.Fixation with steel wire part 2 is positioned at shell 1 inside, and steel wire 3 is arranged on fixation with steel wire part 2.Pressure transducer is vertically mounted on the middle part of circular pressure transmission body.
Pressure transducer in this device and circular pressure transmission body have two kinds of mounting meanss.Be illustrated in figure 1 the first mounting means: be provided with a pressure transmission film uploading on pressing plate 4, steel wire 3 one end of string formula pressure transducer are connected on pressure transmission film, pressure transmission film adopts flexible sheet.Can avoid like this steel wire 3 to contact with uploading the direct of pressing plate 4, can further reduce measuring error, simultaneously steel wire 3 need not contact the serviceable life that has also increased steel wire 3 self with the comparatively hard pressing plate 4 of uploading.If Fig. 2 is another kind of mounting means: directly string formula pressure transducer is arranged on pressure transmission body, the manner cost is lower, and install very fast, time saving and energy saving.
In the time that tested works internal stress changes, the lower pressure transmission plate 6 of circular pressure transmission body is synchronously experienced the variation of stress, and lower pressure transmission plate 6 will produce distortion, and distortion passes to steel wire 3 and is transformed into the variation of steel wire 3 stress, thereby changes the vibration frequency of steel wire 3.By measuring vibrations frequency, can measure the value of compressive stress of tested works, can synchronously measure the temperature value of burying underground a little simultaneously.
Existing type vibration wire concrete pressure cell is mainly used in the measurement of lining concrete in tunnel concrete compressive stress.As shown in Figure 3, instrument is that two rectangular thin plate surroundings are welded, and between two plates, gap is minimum, and fills accommodating pressure-transmitting liquid, and taseometer upper plate is connected with vibrating wire pressure sensor with a pressure tube 8, and sensor afterbody stretches out a very long forcing pipe 7 simultaneously.Taseometer is embedded in concrete lining, or is embedded between concrete and tunnel wall.General sprayed concrete is built complete, treats because of hydration heat of concrete, and temperature declines, and between concrete and instrument pressure transmission plate, produces space.Now plus-pressure on forcing pipe 7, after contacting completely, starts to survey concrete compressive stress to pressure transmission plate with concrete space.Although this instrument physical dimension is very thin, because pressure transmission liquid temp coefficient is large, caused instrument temperature penalty coefficient large, thereby can not be accurately directly in concrete, particularly in mass concrete, measure concrete compressive stress.
This device has the following advantages compared with existing device:
1) temperature compensation coefficient is little, is more conducive to the accuracy of measured value;
2) be applicable to the measurement of compressive stress in mass concrete.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvement and distortion, these improvement and distortion also should be considered as protection scope of the present invention.
Claims (6)
1. a novel type vibration wire concrete pressure cell, is characterized in that, comprises circular pressure transmission body and the string formula pressure transducer being connected with described circular pressure transmission body, and thickness and the diameter ratio of described circular pressure transmission body are less than 1/15;
Described pressure transducer comprises shell, is positioned at the fixation with steel wire part of described enclosure and is arranged on the steel wire on described fixation with steel wire part;
Described circular pressure transmission body comprises uploads pressing plate, lower pressure transmission plate and in described accommodating pressure-transmitting liquid chamber of uploading between pressing plate and lower pressure transmission plate, the thickness in described accommodating pressure-transmitting liquid chamber is less than 3/100 with the ratio of circular pressure transmission body thickness; Described accommodating pressure-transmitting liquid is provided with pressure transmission liquid in chamber;
Described in being arranged on, uploads on pressing plate by described pressure transducer.
2. the novel type vibration wire concrete of one according to claim 1 pressure cell, is characterized in that, described in upload and on pressing plate, be provided with pressure transmission film.
3. the novel type vibration wire concrete of one according to claim 2 pressure cell, is characterized in that, described steel wire is connected with described pressure transmission film.
4. the novel type vibration wire concrete of one according to claim 3 pressure cell, is characterized in that, described pressure transmission film adopts flexible sheet.
5. the novel type vibration wire concrete of one according to claim 1 pressure cell, is characterized in that, between described pressure transducer and circular pressure transmission body, adopts Sealing Technology.
6. the novel type vibration wire concrete of one according to claim 1 pressure cell, is characterized in that, described pressure transducer is vertically mounted on the middle part of described circular pressure transmission body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410308398.5A CN104075829B (en) | 2014-07-01 | 2014-07-01 | A kind of new type vibration wire concrete pressure cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410308398.5A CN104075829B (en) | 2014-07-01 | 2014-07-01 | A kind of new type vibration wire concrete pressure cell |
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| Publication Number | Publication Date |
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| CN104075829A true CN104075829A (en) | 2014-10-01 |
| CN104075829B CN104075829B (en) | 2017-03-08 |
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| CN201410308398.5A Active CN104075829B (en) | 2014-07-01 | 2014-07-01 | A kind of new type vibration wire concrete pressure cell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748895A (en) * | 2014-08-18 | 2015-07-01 | 吴华林 | Vibration string type concrete stress meter |
| CN114563113A (en) * | 2022-03-03 | 2022-05-31 | 中国工程物理研究院总体工程研究所 | Hollow resonant stress assembly and stress meter |
| KR102557886B1 (en) * | 2022-11-03 | 2023-07-24 | 미래이엔씨 주식회사 | Performance test device of shotcrete stress meter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5113707A (en) * | 1991-05-02 | 1992-05-19 | Her Majesty The Queen In Right Of Canada | Three-dimensional strain monitor for rock boreholes |
| CN1172951A (en) * | 1996-08-06 | 1998-02-11 | 中国科学院武汉岩土力学研究所 | Sealed break type transmission box |
| CN2700831Y (en) * | 2004-03-10 | 2005-05-18 | 国电自动化研究院 | Vibratory string type instrument with highly fastened vibratory string |
| CN103307963A (en) * | 2013-06-28 | 2013-09-18 | 国家电网公司 | Wide-range high pressure resistant wire type strain gauge |
-
2014
- 2014-07-01 CN CN201410308398.5A patent/CN104075829B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5113707A (en) * | 1991-05-02 | 1992-05-19 | Her Majesty The Queen In Right Of Canada | Three-dimensional strain monitor for rock boreholes |
| CN1172951A (en) * | 1996-08-06 | 1998-02-11 | 中国科学院武汉岩土力学研究所 | Sealed break type transmission box |
| CN2700831Y (en) * | 2004-03-10 | 2005-05-18 | 国电自动化研究院 | Vibratory string type instrument with highly fastened vibratory string |
| CN103307963A (en) * | 2013-06-28 | 2013-09-18 | 国家电网公司 | Wide-range high pressure resistant wire type strain gauge |
Non-Patent Citations (2)
| Title |
|---|
| 储海宁,等: "关于混凝土应力测量问题的探讨", 《2012年中国水力发电工程学会大坝安全监测专委会年会暨学术交流会论文集》 * |
| 王维廉，等: "钢弦式双膜土压力盒", 《冶金建筑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748895A (en) * | 2014-08-18 | 2015-07-01 | 吴华林 | Vibration string type concrete stress meter |
| CN114563113A (en) * | 2022-03-03 | 2022-05-31 | 中国工程物理研究院总体工程研究所 | Hollow resonant stress assembly and stress meter |
| CN114563113B (en) * | 2022-03-03 | 2023-11-21 | 中国工程物理研究院总体工程研究所 | Hollow resonance type stress assembly and stress meter |
| KR102557886B1 (en) * | 2022-11-03 | 2023-07-24 | 미래이엔씨 주식회사 | Performance test device of shotcrete stress meter |
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| Publication number | Publication date |
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| CN104075829B (en) | 2017-03-08 |
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Effective date of registration: 20171124 Address after: High road high tech Development Zone Nanjing city Jiangsu province 210032 No. 20 Co-patentee after: State Grid Electric Power Research Insititute Patentee after: NARI Technology Development Co., Ltd. Address before: Nan Shui Road Gulou District of Nanjing city of Jiangsu Province, No. 8 210000 Co-patentee before: State Grid Electric Power Research Insititute Patentee before: Nanjing Nari Co., Ltd. |
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