CN1036829A - The non-damaged resistance to vibration of concrete component detects - Google Patents
The non-damaged resistance to vibration of concrete component detects Download PDFInfo
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- CN1036829A CN1036829A CN 88105054 CN88105054A CN1036829A CN 1036829 A CN1036829 A CN 1036829A CN 88105054 CN88105054 CN 88105054 CN 88105054 A CN88105054 A CN 88105054A CN 1036829 A CN1036829 A CN 1036829A
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Abstract
The invention discloses the method that the non-damaged resistance to vibration of a kind of concrete component detects.This method realizes by computing machine, sensor, vibrator and holder device.Employing the present invention can be to normal temperature, and the cement components under the high temperature maintenance carries out with machine testing, realizes the monitoring to component strength, can adjust curing cycle according to the information with machine testing, guarantees product quality effectively.
Description
The present invention relates to the detection method and the device of the non-damaged resistance to vibration of concrete component, the dynamic random that is suitable for concrete component intensity in curing period at normal temperature or high temperature detects.
At present the detection majority of concrete component intensity is taked carrying out the crumbliness pressure test with member with the test specimen of criticizing model, to determine the label of member actual strength, the problem of this detection method is can't realize high temperature, the detection of dynamic of the concrete component intensity under the closed state, waste of raw materials is bigger simultaneously.Another kind of reisilometer method of testing is a kind of non-damage detection method, equally also can't realize high temperature maintenance lower member is carried out the detection of resistance to vibration, and the error of this detection method is bigger.
In order to address this problem, U.S. engineering index digest 1981,019321 proposes, and according to the experimental data that strobe pulse speed is obtained, by computing, the prediction late strength of concrete carries out the method for non-damaged test.
The objective of the invention is to provide a kind of method of testing that knocks, realize the non-damaged resistance to vibration of concrete component is detected, it can not only carry out with machine testing the concrete component intensity under normal temperature, the high temperature maintenance, and can guarantee product quality.
The objective of the invention is to realize: constantly increase according to concrete component component strength between preserving period with following technical scheme, the elastic modulus of reflection member itself is also constantly changing, according to the elastic modulus principle relevant with the member natural frequency, adopt hammering method, knock test specimen, send the vibration frequency signal of test specimen to computing machine by sensor and carry out data processing, detect the intensity of member.Based on above-mentioned principle, test specimen is placed on the holder device that has fulcrum, sensor installation and vibrator on test specimen, sensor adopts piezoelectric accelerometer.Be affixed on the test specimen surface with bonding agent, sensor is connected the sealing of employing fluid sealant with lead, be provided with the lightweight supporting plate between fulcrum and the test specimen, be used to prevent test piece deformation, be provided with vibration absorber between holder device and immobilizing foundation, adopt materials such as rubber or rigid plastic foam to be filled in the beam between holder device and immobilizing foundation.During detection, provide signal,,, knock test specimen, more detected signal is carried out data processing by computing machine, draw the intensity level of test specimen by sensor with the direct voltage drive vibrator by servo circuit by computing machine.
Because the present invention takes the method for knocking to realize the non-damaged resistance to vibration of concrete component is detected, therefore, can be to normal temperature, member under the high temperature maintenance carries out with machine testing, realization is to the monitoring of component strength, can adjust curing cycle according to information, guarantee product quality effectively with machine testing.
The present invention is described in detail by following embodiment and accompanying drawing thereof.
Fig. 1 is a specific embodiment of the invention block diagram.
Fig. 2 detects partly synoptic diagram among the present invention.
Fig. 3 is an exciter structure synoptic diagram among the present invention.
With reference to accompanying drawing 1,2, the non-damaged resistance to vibration of concrete component detects and adopts hammering method, by computing machine 6, vibrator 3, sensor 4 and holder device are realized, provide signal to drive vibrator 3 by computing machine 6 and knock test specimen 2 by servo circuit 5, again detected signal is sent to computing machine 6 by sensor 4 and carries out the intensity level that data processing draws test specimen 2, wherein test specimen 2 is placed on the holder device that has fulcrum 1, installation vibrator 3 and sensor 4 on test specimen 2, vibrator 3 is fixed on the column 12 by trip bolt 13, sensor 4 adopts piezoelectric accelerometer, and the bright olefin(e) acid fat of sensor 4 usefulness bonding agent is adhered to test specimen 2 surfaces, and sensor 4 adopts the fluid sealant sealing with the lead junction, be provided with supporting plate 7 between fulcrum 1 and the test specimen 2, fulcrum 1 is connected on the backing plate 9 by adjustable supports 8, and backing plate 9 is placed on the beam 10, filling rubber or rigid plastic foam in beam 10, beam 10 is bonded on the base plate 11, base plate 11 by screw retention on the basis.
With reference to accompanying drawing 3, vibrator 3 is by shell 18, coil 19 pillars 16 iron cores 25, spring 24, closed nut 21, rubber cushion 14, closing cover 15 is formed, wherein, closing cover 15 is connected with pillar 16 by screw thread, and rubber cushion 14 is fixed between closing cover 15 and the pillar 16, and pillar 16 is connected with shell 18 by screw thread, it is adjacent with coil 19 that prelocalization packing ring 17 drops on shell 18 inner ends, back space washer 20 is pressed in the other end of coil 19, and volute spring 24 is enclosed within on the movable core 25 and is pressed on the plane of back space washer 20, and tightening closed nut 21 is connected with shell 18 by screw thread and compresses back space washer 20, movable core 25 passes sleeve pipe 26 and cooperates with connecting link 27, and the lead-in wire of coil 19 passes tightening closed nut 21 backs by sealing gasket 22 sealings.Vibrator 3 is subjected to voltage signal and attracts movable core 25 by coil 19, does not have Gu drought 4 by connecting link, knocks test specimen 2 by rubber cushion 14 again.
Claims (1)
1, the non-damaged resistance to vibration of concrete component detects and adopts hammering method, by computing machine 6, and vibrator 3, sensor 4 and holder device are realized, it is characterized in that:
A, provide signal to drive vibrators 3 by servo circuit 5 by computing machine 6 to knock test specimen 2, more detected signal is sent to computing machine 6 by sensor 4 and carries out the intensity level that data processing draws test specimen 2, wherein test specimen 2 is placed on the holder device that has fulcrum 1.Installation vibrator 3 and sensor 4 on test specimen 2, vibrator 3 is fixed on the column 12 by trip bolt 13, sensor 4 adopts piezoelectric accelerometer, the bright olefin(e) acid fat of sensor 4 usefulness bonding agent to be adhered to test specimen 2 surfaces, sensor 4 adopts the fluid sealant sealing with the lead junction, be provided with supporting plate 7 between fulcrum 1 and the test specimen 2, fulcrum 1 is connected on the backing plate 9 by adjustable supports 8, backing plate 9 is placed on the beam 10, filling rubber or rigid plastic foam in beam 10, beam 10 is bonded on the base plate 11, base plate 11 by screw retention on the basis.
B, vibrator 3 is by shell 18, coil 19 pipes 16, iron core 25, spring 24, closed nut 21, rubber cushion 14, closing cover 15 is formed, wherein, closing cover 15 is connected with pillar 16 by screw thread, and rubber cushion 14 is fixed between closing cover 15 and the pillar 16, and pillar 16 is connected with shell 18 by screw thread, it is adjacent with coil 19 that prelocalization packing ring 17 drops on shell 18 inner ends, back space washer 20 is pressed in the other end of coil 19, and volute spring 24 is enclosed within on the movable core 25 and is pressed on the plane of back space washer 20, and tightening closed nut 21 is connected with shell 18 by screw thread and compresses back space washer 20, movable core 25 passes sleeve pipe 26 and cooperates with connecting link 27, and the lead-in wire of coil 19 passes tightening closed nut 21 backs by sealing gasket 22 sealings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105054 CN1036829A (en) | 1988-04-12 | 1988-04-12 | The non-damaged resistance to vibration of concrete component detects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105054 CN1036829A (en) | 1988-04-12 | 1988-04-12 | The non-damaged resistance to vibration of concrete component detects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1036829A true CN1036829A (en) | 1989-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88105054 Pending CN1036829A (en) | 1988-04-12 | 1988-04-12 | The non-damaged resistance to vibration of concrete component detects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1036829A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002031494A1 (en) * | 2000-10-13 | 2002-04-18 | Yiching Lin | Ball impact assembly for inspecting the quality of concrete structure |
| CN106124344A (en) * | 2016-08-02 | 2016-11-16 | 昆明理工大学 | A kind of method of testing of fragility construction material Dynamic Elastic Module |
| CN107436264A (en) * | 2017-08-03 | 2017-12-05 | 河海大学 | A kind of assay method of the concrete damage degree based on Non-Linear Vibration technology |
| CN115015110A (en) * | 2022-06-23 | 2022-09-06 | 中交二航武汉港湾新材料有限公司 | Foam light soil layering detection device and detection method |
-
1988
- 1988-04-12 CN CN 88105054 patent/CN1036829A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002031494A1 (en) * | 2000-10-13 | 2002-04-18 | Yiching Lin | Ball impact assembly for inspecting the quality of concrete structure |
| CN106124344A (en) * | 2016-08-02 | 2016-11-16 | 昆明理工大学 | A kind of method of testing of fragility construction material Dynamic Elastic Module |
| CN107436264A (en) * | 2017-08-03 | 2017-12-05 | 河海大学 | A kind of assay method of the concrete damage degree based on Non-Linear Vibration technology |
| CN115015110A (en) * | 2022-06-23 | 2022-09-06 | 中交二航武汉港湾新材料有限公司 | Foam light soil layering detection device and detection method |
| CN115015110B (en) * | 2022-06-23 | 2023-07-21 | 中交二航武汉港湾新材料有限公司 | Foam light soil layering detection device and detection method |
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