CN102928336B - Method for measuring slippage of steel plate concrete structure - Google Patents
Method for measuring slippage of steel plate concrete structure Download PDFInfo
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- CN102928336B CN102928336B CN201210410716.XA CN201210410716A CN102928336B CN 102928336 B CN102928336 B CN 102928336B CN 201210410716 A CN201210410716 A CN 201210410716A CN 102928336 B CN102928336 B CN 102928336B
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- steel plate
- concrete structure
- slippage
- plate concrete
- steel
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Abstract
The invention relates to a method for measuring the slippage of a steel plate concrete structure. According to the method, the slippage between a steel plate and concrete can be measured under the condition that the steel plate concrete structure is stressed through acupuncture needles and a steel rule. The measuring method comprises the following steps of: (1) inspecting the quality of the acupuncture needles required by measurement, and wetting the acupuncture needles by a black water color pen; (2) symmetrically fixing the acupuncture needles on a joint between the steel plate and the concrete side by side sequentially according to positions to be measured, and fixing the steel rule beside the steel plate; (3) setting the position of a camera to make needle points of the acupuncture needles and the steel rule within an imaging range of the camera; (4) acquiring the relative positions of two needle points at all the positions to be measured before the steel plate concrete structure is stressed; (5) repeating the step (4) after the slippage generates in the steel plate concrete structure and is stabilized, and acquiring a picture after the slippage; and (6) analyzing the acquired picture, and calculating the slippage before and after the steel plate concrete structure is stressed. Compared with the prior art, the measuring method has the advantages of high measuring accuracy, simple operation and the like.
Description
Technical field
The present invention relates to a kind of Relative sliding measuring method, especially relate to a kind of measuring method of slippage of steel plate concrete structure.
Background technology
Because steel plate concrete unitized construction light plate and concrete cohesive action are less than the cohesive action of reinforced concrete, so the interface sliding of steel plate concrete unitized construction is inevitable.The Relative sliding of interface is mainly not enough due to the shear bolt nail between concrete and steel plate interface, and its compound action is reduced, causes the two distortion inconsistent and generation.Relative interface slippage affects main manifestations both ways to steel plate concrete unitized construction stress performance: 1. reduce the rigidity of structure, and the distortion of unitized construction under working load effect is increased; 2. reduce the combined effect in cross section, compound section anti-bending bearing capacity is reduced.Therefore, slippage is measured analyze the impact of longitudinal slip effect on unitized construction ultimate bearing capacity and distortion by being of value to.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and the measuring method that a kind of measuring accuracy is high, operate easy slippage of steel plate concrete structure is provided.
Object of the present invention can be achieved through the following technical solutions:
A kind of measuring method of slippage of steel plate concrete structure, the concrete that described steel plate concrete structure comprises two steel plates in left and right and is cast between two steel plates, described measuring method measures the slippage between steel plate concrete structure stressing conditions lower steel plate and concrete by acupuncture needle and steel ruler, comprises the following steps:
1) acupuncture needle quality needed for check measurement, is stained with profit acupuncture needle with black watercolor pencil, improves the identification of acupuncture needle needle point in photo;
2) according to position to be measured by acupuncture needle in order symmetry be fixed on steel plate and concrete junction side by side, and fix a steel ruler steel plate is other;
3) camera position is set, makes acupuncture needle needle point and steel ruler all within the areas imaging of camera;
4) before steel plate concrete structure is stressed, the picture of camera shooting steel plate concrete structure, regulates camera to obtain the relative position of two needle points in all positions to be measured, and is saved in computing machine by acupuncture needle order by picture;
5) after steel plate concrete structure produces slippage and be stable, step 4 is repeated), obtain the picture after slippage;
6) computing machine is to step 4) and step 5) picture that obtains analyzes, and converses the slippage of steel plate concrete structure in stressed front and back according to the regular length on steel ruler.
Described acupuncture needle is bonded on steel plate concrete structure by glue.
The tip diameter of described acupuncture needle is less than 0.1mm.
Described steel ruler is provided with two, is separately fixed at the outside of two steel plates in left and right.
Described camera is super clear microspur slr camera.
When obtaining the relative position of two needle points in all positions to be measured, the relative distance of steel plate concrete structure and camera remains unchanged.
Compared with prior art, the present invention has the following advantages:
1) measurement equipment of the present invention is simple and easy to seek, good economy performance, and experimental implementation is very strong;
2) measuring accuracy is high: because the physical size of needle point own is less than 0.1mm, in the photo that microspur list is anti-lower, generally only account for 2-3 pixel, raising measuring accuracy, and the order of magnitude of slippage can be as accurate as 0.01mm;
3) operate simple and easy: after early stage, various preliminary work was shaping, by only regulating tripod to take pictures to adjust camera, experimental procedure is simple and repeatability is high, does not need very strong specialty background;
4) measuring appliance can be reused: the acupuncture needle point used in amount process, black watercolor pencil, pencil etc., if under needle point is not stained with ash or other damaged conditions, can reuses, further increase economic worth.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention when measuring;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is the enlarged drawing of A in Fig. 2.
In figure: 1 is concrete, 2 is steel plate, and 3 is acupuncture needle, and 4 is steel ruler, and F is vertical load.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
A kind of measuring method of slippage of steel plate concrete structure, as shown in Figure 1, the concrete 1 that described steel plate concrete structure comprises two steel plates 2 in left and right and is cast between two steel plates, the measuring method of the present embodiment is needing the place surveying steel plate concrete slippage, be placed on concrete and steel plate by sticky side by side for acupuncture needle symmetry, fix a steel ruler on steel plate side simultaneously, utilize the displacement of acupuncture needle point before and after the slippage of super clear microspur slr camera shooting steel plate concrete, utilize the number of pixels shared by length-specific steel ruler in photo, converse the slippage between steel plate and concrete.This method specifically comprises the following steps:
The quality of acupuncture needle 3 needed for step one, check measurement, avoid needle point to cross thick etc. should not measure phenomenon and occur, profit acupuncture needle is stained with black watercolor pencil, improve the identification of acupuncture needle needle point in photo, in the present embodiment, acupuncture needle is of a size of 0.15mm*25mm, and the tip diameter of acupuncture needle is less than 0.1mm.
Step 2, with pencil mark slippage position to be measured, according to position to be measured by acupuncture needle 3 by the 502 glue symmetrical junction being bonded at steel plate 2 and concrete 1 side by side in order, and fix a steel ruler 4 on steel plate 2 side, as shown in Fig. 2-Fig. 3, described steel ruler 4 is provided with two, is separately fixed at the outside of two steel plates 2 in left and right.
Step 3, camera position is set, camera is fixed on tripod, and adjusts angle and the focal length of camera, make acupuncture needle needle point and steel ruler all within the areas imaging of camera.
Step 4, before steel plate concrete structure is stressed, in Fig. 1, F is vertical load, keep the relative distance of steel plate concrete structure and camera constant, the picture of camera shooting steel plate concrete structure, and the relative position by regulating the tripod of fixed camera to obtain two needle points in all positions to be measured, and by acupuncture needle order, picture is saved in computing machine.
Step 5, after steel plate concrete structure produces slippage and be stable, repeat step 4, obtain the picture after slippage;
Step 6, computing machine are analyzed the picture that step 4 and step 5 obtain, and converse the slippage of steel plate concrete structure in stressed front and back according to the regular length on steel ruler.
Measurement equipment needed for this method comprise a slr camera having a better micro-lens, acupuncture needle, 502, black watercolor pencil and pencil etc., required equipment has been bought on the market very well, and economy can be followed, so experimental implementation is very strong.If experiment equipment allows, multiple stage slr camera can be used to add simultaneously, be convenient to save experimental period, improve conventional efficient.The physical size of the needle point that this method uses own is less than 0.1mm, microspur list instead under photo in generally only account for 2-3 pixel, thus improve measure precision, the order of magnitude of slippage can be as accurate as 0.01mm.
Claims (5)
1. the measuring method of a slippage of steel plate concrete structure, the concrete that described steel plate concrete structure comprises two steel plates in left and right and is cast between two steel plates, it is characterized in that, described measuring method measures the slippage between steel plate concrete structure stressing conditions lower steel plate and concrete by acupuncture needle and steel ruler, specifically comprises the following steps:
1) acupuncture needle quality needed for check measurement, is stained with profit acupuncture needle with black watercolor pencil;
2) according to position to be measured by acupuncture needle in order symmetry be fixed on steel plate and concrete junction side by side, and fix a steel ruler steel plate is other;
3) camera position is set, makes acupuncture needle needle point and steel ruler all within the areas imaging of camera;
4) before steel plate concrete structure is stressed, the picture of camera shooting steel plate concrete structure, camera is regulated to obtain the relative position of two needle points in all positions to be measured, and by acupuncture needle order, picture is saved in computing machine, when obtaining the relative position of two needle points in all positions to be measured, the relative distance of steel plate concrete structure and camera remains unchanged;
5) after steel plate concrete structure produces slippage and be stable, step 4 is repeated), obtain the picture after slippage;
6) computing machine is to step 4) and step 5) picture that obtains analyzes, and converses the slippage of steel plate concrete structure in stressed front and back according to the regular length on steel ruler.
2. the measuring method of a kind of slippage of steel plate concrete structure according to claim 1, is characterized in that, described acupuncture needle is bonded on steel plate concrete structure by glue.
3. the measuring method of a kind of slippage of steel plate concrete structure according to claim 1, is characterized in that, the tip diameter of described acupuncture needle is less than 0.1mm.
4. the measuring method of a kind of slippage of steel plate concrete structure according to claim 1, is characterized in that, described steel ruler is provided with two, is separately fixed at the outside of two steel plates in left and right.
5. the measuring method of a kind of slippage of steel plate concrete structure according to claim 1, is characterized in that, described camera is super clear microspur slr camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410716.XA CN102928336B (en) | 2012-10-24 | 2012-10-24 | Method for measuring slippage of steel plate concrete structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210410716.XA CN102928336B (en) | 2012-10-24 | 2012-10-24 | Method for measuring slippage of steel plate concrete structure |
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| Publication Number | Publication Date |
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| CN102928336A CN102928336A (en) | 2013-02-13 |
| CN102928336B true CN102928336B (en) | 2015-03-04 |
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| CN201210410716.XA Expired - Fee Related CN102928336B (en) | 2012-10-24 | 2012-10-24 | Method for measuring slippage of steel plate concrete structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154839A (en) * | 2014-08-07 | 2014-11-19 | 桂林理工大学 | Relative slippage measuring method |
| CN104848777A (en) * | 2015-05-28 | 2015-08-19 | 中国建筑第八工程局有限公司 | Measuring method of interface slippage and measuring device |
| CN108982183A (en) * | 2018-08-07 | 2018-12-11 | 宁波联城住工科技有限公司 | A kind of preparation method and test method, mold of concrete sample |
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| JPH08105742A (en) * | 1994-10-03 | 1996-04-23 | Seikosha Co Ltd | Distance measuring apparatus |
| CN2771817Y (en) * | 2004-08-17 | 2006-04-12 | 廊坊开发区大地工程检测技术开发有限公司 | Camera-shoft width-measuring instrument for surface crack of building |
| CN202024732U (en) * | 2011-01-27 | 2011-11-02 | 中国矿业大学 | Digital displacement measuring instrument |
| CN102297680B (en) * | 2011-07-21 | 2013-04-03 | 中铁十局集团有限公司 | Support and template subsidence deformation observation method and support subsidence deformation observation apparatus |
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Granted publication date: 20150304 Termination date: 20171024 |