CN201653600U - Isolated strain-free meter - Google Patents
Isolated strain-free meter Download PDFInfo
- Publication number
- CN201653600U CN201653600U CN2010201409713U CN201020140971U CN201653600U CN 201653600 U CN201653600 U CN 201653600U CN 2010201409713 U CN2010201409713 U CN 2010201409713U CN 201020140971 U CN201020140971 U CN 201020140971U CN 201653600 U CN201653600 U CN 201653600U
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- CN
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- Prior art keywords
- concrete
- outer cylinder
- concrete column
- urceolus
- meter
- Prior art date
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- Expired - Lifetime
Links
- 239000004567 concrete Substances 0.000 claims abstract description 59
- 239000011178 precast concrete Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000010426 asphalt Substances 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The utility model discloses an isolated strain-free meter which comprises a strain meter, an internal concrete column and an outer cylinder. A certain gap is formed between the internal concrete column and the outer cylinder; and the strain meter is arranged in the middle position of the internal concrete column. The internal concrete column adopts an in-situ concrete cylinder, an asphalt layer is paved between the bottom part of the outer wall of the internal concrete column and the inner wall of the outer cylinder; an osmometer can be embedded between the internal concrete column and the inner wall of the outer cylinder; the outer cylinder adopts a prefabricated concrete cylinder, a prefabricated concrete outer cylinder cover is arranged at the upper part of the outer cylinder, and an opening is formed on the lateral surface of the outer cylinder; and a cable of the strain meter extends from the opening on the lateral surface of the outer cylinder. The isolated strain-free meter has the advantages of simple structure and convenient operation, is identical with surrounding concrete in temperature and humidity and can contrast and analyze strain caused by the pressure of possibly permeating high water, thereby accurately measuring the free volume deformation of concrete, so as to provide the most accurate basic data for the judgment of basic conditions of the concrete and the calculation of structural stress.
Description
Technical field
The utility model relates to the structure of unstressed meter in a kind of monitoring concrete dam (or large volume concrete structural), belongs to dam and project security monitoring technical field.
Background technology
At present, in concrete dam and the part large volume concrete structural in order to monitor concrete ess-strain, near corresponding Strain Meter Set, all be provided with unstressed meter, be out of shape with own vols such as temperature, humidity and hydration heat with the monitoring concrete, thereby further calculate real structural stress.
Fig. 1 is traditional unstressed meter structural representation, as shown in Figure 1: the unstressed meter in current " DLT5178-2003 concrete dam safety monitoring technology standard " comprise urceolus 5 ', inner core 4 ', urceolus 5 ' and inner core 4 ' between have a fixed gap 6 ', space 6 ' in can filled with wood chips or rubber, inner core 4 ' internal face on also be coated with the thick brea bed 3 of 5mm ', big or small strain meter 1 ' bucket 4 ' interior centre position in being arranged on, its cable 2 ' from inner core 4 ' top stretch out, and also be horizontally arranged with in inner core 4 ' inside galvanized wire backguy 7 ', in addition, inner core 4 ' and urceolus 5 ' between weld on circumferentially, form welding edge 8 '.
There is following problem in above structure: not exclusively be unstress state in the former unstressed meter tube, influenced less at middle weir stress than the measured value of hour unstressed meter, but in the heavily stressed particularly near dam foundation position of high dam stress complexity, the strain that suffered stress produces in the bucket can not be ignored than with real unstressed strain facies; In addition, high dam often means high water head, makes nearly upstream side, nearly foundation plane inside concrete all might have higher hydraulic pressure, can change the stress state in the unstressed bucket under high hydraulic action, thereby make unstressed instrumentation value produce deviation.
The utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of concrete of putting into wherein that makes not to be subjected to the surrounding structure stress influence, guarantees the isolated unstressed meter that its residing temperature and humidity is consistent with surrounding concrete simultaneously;
Another purpose of the present utility model provides a kind of when the utility model bears high hydraulic pressure, the strain that hydraulic pressure can be caused is deducted when calculating, thereby guarantee that final measured value is that the real overstocked strain that causes of concrete free body is deducted when calculating, thereby guarantee that final measured value is the isolated unstressed meter that real concrete free volume is out of shape.
The utility model is achieved through the following technical solutions:
A kind of isolated unstressed meter, comprise a strainometer, inner concrete column and urceolus, has a fixed gap between inner concrete column and the urceolus, strainometer is arranged on the centre position in the inner concrete column, it is characterized in that, described inner concrete column and urceolus all are cylindrical structure, wherein, inner concrete column is the cast-in-place concrete post, be equipped with brea bed between its outer wall bottom and the outer tube inner wall, urceolus then is a precast concrete tube, and its top is provided with the outer cover of a precast concrete, and its side has an opening, and the cable of described strainometer stretches out from the opening part of urceolus side.
In addition, the gap between inner concrete column and urceolus also is provided with an osmometer, and the osmometer cable stretches out from the opening part of above-mentioned urceolus side.
The beneficial effects of the utility model are: the utility model is simple in structure, easy to operate, it has created a unstressed environment that is not subjected to the surrounding concrete stress influence, guaranteed that simultaneously temperature and humidity of the present utility model is identical with surrounding concrete, and the strain that can cause the high hydraulic pressure that may infiltrate is analyzed, thereby accurately measure concrete free volume distortion, provide basic data the most accurately for judging that concrete basic condition and structural stress calculate.
Description of drawings
Fig. 1 is traditional unstressed meter structural representation;
Fig. 2 is the structural representation of the utility model one embodiment.
Main Reference numeral implication is among the figure:
1, strainometer 2, cable 3, brea bed 4, inner concrete column
5, urceolus 6, space 7, galvanized wire backguy 8, welding edge
9, the outer cover 11 of precast concrete, osmometer 12, osmometer cable
Embodiment
Below in conjunction with accompanying drawing, describe embodiment of the present utility model in detail:
Fig. 2 is the structural representation of the utility model one embodiment.
As shown in Figure 2: isolated unstressed meter, comprise a strainometer 1, inner concrete column 4 and urceolus 5, has a fixed gap 6 between inner concrete column 4 and the urceolus 5, strainometer 1 is arranged on the centre position in the inner concrete column 4, described inner concrete column 4 and urceolus 5 all are cylindrical structure, wherein, inner concrete column 4 is the cast-in-place concrete post, be equipped with brea bed 3 between its outer wall bottom and urceolus 5 inwalls, urceolus 5 then is a precast concrete tube, its top is provided with the outer cover 9 of a precast concrete, and its side has an opening, the cable 2 of described strainometer 1 stretches out from the opening part of urceolus 5 sides, and 6 places, space between inner concrete column 4 and urceolus 5 also are provided with an osmometer 10, and osmometer cable 11 stretches out from the opening part of above-mentioned urceolus 5 sides.
Moulding process of the present utility model is:
(1) first at first at the scene prefabricated urceolus 5, promptly the precast concrete tube comprises at the bottom of the urceolus and the outer cover 9 of precast concrete;
(2) when arriving instrument installation elevation, prefabricated urceolus 5 is imbedded the design and installation position;
(3) use concrete depositing right cylinder with the same storehouse of surrounding concrete again, promptly cast-in-place inside concrete column 4 is imbedded strainometer 1 in the inner concrete column 4 then;
(4) lay the thick brea bed 3 of about 5mm on the inwall of urceolus 5 bottom surfaces, then inner concrete column 4 is put into urceolus 5, the space 6 between inner concrete column 4 and the urceolus 5 is 50mm probably;
(5) near the upstream side and foundation plane at high dam, can be at the osmometer 10 of the sincere corresponding maximum head of inner concrete column 4 sidepieces, the cable of osmometer 10 and strainometer 1 side exit from urceolus 5 is stretched out, cover the outer cover 9 of precast concrete again, promptly finish on-the-spot the installation.
The utility model can accurately be measured concrete free volume distortion in the course of the work, provides basic data the most accurately for judging that concrete basic condition and structural stress calculate.
Below disclose the utility model with preferred embodiment, so it is not in order to restriction the utility model, and all employings are equal to replaces or technical scheme that the equivalent transformation mode is obtained, all drops within the protection domain of the present utility model.
Claims (2)
1. isolated unstressed meter, comprise a strainometer (1), inner concrete column (4) and urceolus (5), has a fixed gap (6) between inner concrete column (4) and the urceolus (5), strainometer (1) is arranged on the centre position in the inner concrete column (4), it is characterized in that, described inner concrete column (4) and urceolus (5) all are cylindrical structure, wherein, inner concrete column (4) is the cast-in-place concrete post, be equipped with brea bed (3) between its outer wall bottom and urceolus (5) inwall, urceolus (5) then is a precast concrete tube, its top is provided with the outer cover (9) of a precast concrete, and its side has an opening, and the cable (2) of described strainometer (1) stretches out from the opening part of urceolus (5) side.
2. isolated unstressed meter according to claim 1, it is characterized in that, an osmometer (10) is located also to be provided with in space (6) between inner concrete column (4) and urceolus (5), and osmometer cable (11) stretches out from the opening part of above-mentioned urceolus (5) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201409713U CN201653600U (en) | 2010-03-24 | 2010-03-24 | Isolated strain-free meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201409713U CN201653600U (en) | 2010-03-24 | 2010-03-24 | Isolated strain-free meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201653600U true CN201653600U (en) | 2010-11-24 |
Family
ID=43118842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201409713U Expired - Lifetime CN201653600U (en) | 2010-03-24 | 2010-03-24 | Isolated strain-free meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201653600U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183540A (en) * | 2011-01-24 | 2011-09-14 | 国网电力科学研究院 | Stress-free strain related analysis method in concrete stress strain monitoring |
| CN102619240A (en) * | 2012-04-19 | 2012-08-01 | 河海大学 | Device for testing counterforce of sunk well foundation subsealing concrete |
| CN103940534A (en) * | 2014-04-02 | 2014-07-23 | 西安近代化学研究所 | Strain gauge assembly for testing curing stress of thermosetting pouring PBX and testing method thereof |
| CN105334315A (en) * | 2015-10-19 | 2016-02-17 | 中冶建筑研究总院有限公司 | Measuring method of temperature shrinkage stress of mass concrete structures |
| CN107607412A (en) * | 2017-07-19 | 2018-01-19 | 华南理工大学 | A kind of concrete structure combined type strain monitoring unit and its state evaluating method |
| CN108593896A (en) * | 2018-05-04 | 2018-09-28 | 中国水利水电科学研究院 | Fully graded concrete is unstressed strain gauge means and measurement method |
| CN108844514A (en) * | 2018-05-04 | 2018-11-20 | 中国水利水电科学研究院 | Strain gauge and the unstressed strain gauge means of fully graded concrete |
| CN109682511A (en) * | 2019-01-15 | 2019-04-26 | 河海大学 | A kind of device and method using steel fiber reinforced concrete aggregate measurement extruding force |
| CN110006329A (en) * | 2019-04-17 | 2019-07-12 | 长江空间信息技术工程有限公司(武汉) | The unstressed meter test device of waterproof and installation method inside large volume low-heat concrete |
-
2010
- 2010-03-24 CN CN2010201409713U patent/CN201653600U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183540A (en) * | 2011-01-24 | 2011-09-14 | 国网电力科学研究院 | Stress-free strain related analysis method in concrete stress strain monitoring |
| CN102183540B (en) * | 2011-01-24 | 2012-08-01 | 国网电力科学研究院 | Stress-free strain related analysis method in concrete stress strain monitoring |
| CN102619240A (en) * | 2012-04-19 | 2012-08-01 | 河海大学 | Device for testing counterforce of sunk well foundation subsealing concrete |
| CN102619240B (en) * | 2012-04-19 | 2014-06-11 | 河海大学 | Device for testing counterforce of sunk well foundation subsealing concrete |
| CN103940534B (en) * | 2014-04-02 | 2016-08-17 | 西安近代化学研究所 | For testing foil gauge assembly and the method for testing of thermosetting cast PBX solidification internal stress |
| CN103940534A (en) * | 2014-04-02 | 2014-07-23 | 西安近代化学研究所 | Strain gauge assembly for testing curing stress of thermosetting pouring PBX and testing method thereof |
| CN105334315A (en) * | 2015-10-19 | 2016-02-17 | 中冶建筑研究总院有限公司 | Measuring method of temperature shrinkage stress of mass concrete structures |
| CN107607412A (en) * | 2017-07-19 | 2018-01-19 | 华南理工大学 | A kind of concrete structure combined type strain monitoring unit and its state evaluating method |
| CN107607412B (en) * | 2017-07-19 | 2019-10-18 | 华南理工大学 | A kind of concrete structure combined type strain monitoring unit and its state evaluating method |
| CN108593896A (en) * | 2018-05-04 | 2018-09-28 | 中国水利水电科学研究院 | Fully graded concrete is unstressed strain gauge means and measurement method |
| CN108844514A (en) * | 2018-05-04 | 2018-11-20 | 中国水利水电科学研究院 | Strain gauge and the unstressed strain gauge means of fully graded concrete |
| CN109682511A (en) * | 2019-01-15 | 2019-04-26 | 河海大学 | A kind of device and method using steel fiber reinforced concrete aggregate measurement extruding force |
| CN110006329A (en) * | 2019-04-17 | 2019-07-12 | 长江空间信息技术工程有限公司(武汉) | The unstressed meter test device of waterproof and installation method inside large volume low-heat concrete |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID ELECTRIC POWER RESEARCH INSITITUTE NANJ Free format text: FORMER OWNER: NANJING NARI CO., LTD. Effective date: 20130708 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: STATE GRID ELECTRIC POWER RESEARCH INSITITUTE Effective date: 20130708 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 210003 NANJING, JIANGSU PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130708 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: State Grid Electric Power Research Insititute Patentee after: Nanjing Nari Co., Ltd. Address before: Nan Shui Road Gulou District of Nanjing city of Jiangsu Province, No. 8 210003 Patentee before: State Grid Electric Power Research Insititute Patentee before: Nanjing Nari Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171117 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: State Grid Electric Power Research Insititute Patentee after: State Grid Corporation of China Co-patentee after: NARI Technology Development Co., Ltd. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: State Grid Electric Power Research Insititute Patentee before: State Grid Corporation of China Co-patentee before: Nanjing Nari Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |