CN1948634A - Method and device of measuring deflection settling of engineering structure body - Google Patents
Method and device of measuring deflection settling of engineering structure body Download PDFInfo
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- CN1948634A CN1948634A CN 200610018825 CN200610018825A CN1948634A CN 1948634 A CN1948634 A CN 1948634A CN 200610018825 CN200610018825 CN 200610018825 CN 200610018825 A CN200610018825 A CN 200610018825A CN 1948634 A CN1948634 A CN 1948634A
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- displacement sensor
- deflection
- cotton rope
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- sedimentation
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Abstract
This invention is a device that measures project structure deflection settlement. It adopts a soft like cord that installs to the static object of measured project of structure not moving in a constant tensile strength, as a measurement system stationary reference point. The hang arm coming from angular displacement sensor fixed installation works in the measured deflection of the structure of the measuring point connects to soft cords. It can measures measurement point's bend degree and settlement value through the rotation hang arm and static soft cord the angular variation.
Description
The invention belongs to the major works structure, as the measuring technique of level such as bridge, ground, foundation pile, dam body or vertical (sedimentation) distortion.More particularly, these major works structures are subjected to physical factors such as self gravitation, imposed load, temperature and can cause between each measuring point of engineering structural system and the static Reference producing small relative displacement.Measure the technology of this displacement, we are referred to as amount of deflection or settlement measurement technology.
Usually following several method is mainly adopted in observation amount of deflection or sedimentation, the level gauge of making as optical principle, its adopts laser principle of shooting at the target, see also the patent of invention " laser level (CN03136347.4) " of U.S. Black ﹠ Decker Inc application, optical lens target spot image-forming principle sees also the patent of invention " a kind of digital level (CN200310111409.2) " that Chinese Wuhan University applies for.The deflection monitoring device that utilizes the liquid level law of connected vessels to make is as the patent of invention " The monitoring methods of long-span bridge deflection structure (CN200310108447.2) " of Chinese Tongji University application etc.Optical principle measure the method for amount of deflection or sedimentation or device exist system too complicated, cost an arm and a leg, safeguard inconvenience, be not suitable in the long-term Continuous Observation of the abominable engineering site of environment.Also there is the liquid flow stain that stagnates in the fluid connection device, and the degree of accuracy is not high, repeatability is bad and can not carry out the shortcoming that dynamic deflection, sedimentation detect.The present invention is intended to propose a kind of simple engineering structural system amount of deflection, settlement measurement method and device, it has, and installation is simple, easy to maintenance, with low cost, the degree of accuracy is high, good reproducibility, and suitable long-term Continuous Observation can be carried out advantages such as dynamic deflection, sedimentation detection again.
Fig. 1 is the inventive method and device general illustration.
Fig. 2 is angular displacement sensor spiral arm of the present invention and gentle shape cotton rope contact relation schematic diagram.
Above-mentioned 2 schematic diagrames have all been explained composition mode, operating principle and the installation of each position of most preferred embodiment of the present invention, the correlation that connects, contacts.
Among Fig. 1,1. being tested engineering structural system, 2. is the invariant position stationary object, for gentle shape cotton rope, 4. is angle displacement sensor 3., 5. is spiral arm.
Among Fig. 2, for gentle shape cotton rope, 4. being angle displacement sensor 3., 5. is spiral arm, 6. is cable, 7. is data Collection ﹠ Processing System.
A kind of method that the present invention proposes to measuring deflection settling of engineering structure body, be that 2. 3. a gentle shape cotton rope be fixed on the stationary object of the external two end invariant positions of tested engineering structures with constant tensile, 4. 1. tested engineering structural system be separately installed with some angle displacement sensors on each amount of deflection or the sedimentation measuring point, 3. 5. the spiral arm of drawing in the angle displacement sensor rotating shaft 4. contact with gentle shape cotton rope, when tested engineering structural system 1. during stress deformation, with gentle shape cotton rope as static reference point, with 3. contacted each the angle displacement sensor spiral arm of gentle shape cotton rope 5. with stressed rotation, 4. its rotational orientation value is measured by each angle displacement sensor, can draw the 1. deflection value of each measuring point of tested engineering structural system.
A kind of device that the present invention proposes to measuring deflection settling of engineering structure body, by a gentle shape cotton rope 3., 4. some angle displacement sensors are formed, gentle shape rope 3. with constant tensile be mounted on tested engineering structural system 1. the stationary object of outer two end invariant positions 2. go up, each angle displacement sensor is fixed on respectively on each amount of deflection or sedimentation measuring point of tested engineering structural system, a spiral arm end 5. is fixed in the angle displacement sensor rotating shaft, the other end and the 3. sliding-contact of gentle shape cotton rope, 7. 6. each angle displacement sensor output signal 4. be connected with data Collection ﹠ Processing System by cable.This system contains the function that the sensor die analog signal is converted to data signal.The sliding-contact that realizes spiral arm and gentle shape cotton rope can have multiple mode, so long as sliding-contact all belongs within the protection domain of the present invention.In the measurement amount of deflection sedimentation device that the present invention proposes, spiral arm one end radially connects with the angular displacement sensor output shaft, the other end is 90 ° of bendings, sweep is parallel with the angular displacement sensor output shaft, be " cross " with gentle shape cotton rope and intersect, rely on the spiral arm self gravitation to be placed on sliding-contact on the gentle shape cotton rope.This is best a kind of way of realization.
Said measuring method of the present invention and device constitute very simple, and the long-term continuous operation of abominable engineering site can conform.For example, gentle shape cotton rope can be the higher steel wire of hot strength, selects for use φ 0.3mm～φ 1.0mm better, measures 100 meters bridges of striding the footpath, and steel wire weight is carried easy for installation, with low cost about about 1000 grams.The extension of steel wire draws and can be fixed on the basis of the existing conditions no matter how simple and crude on the resting of invariant position at engineering site, also can on the invariant position resting, draw steel wire according to striding footpath or slope requirement self-support mark post setting fixed point extension, after fixing, can adopt at steel wire one end spring or gravity drop hammer on the fixed point of the other end, steel wire to be realized the traction of stretching constant force, it is substantially parallel with tested engineering structural system test surfaces that its direction position keeps, and level gets final product.Angular displacement sensor can be fixed on each measuring point of tested engineering structural system test surfaces with expansion bolt, but also can on tested engineering structural system measuring point, utilize the Support Position to set up support to install, the spiral arm that will guarantee during installation to be connected in the angular displacement sensor rotating shaft relies on self gravitation and steel wire reliably to contact and slip, this contact force is very slight, generally can not cause the disturbance of gentle shape cotton rope.Gentle shape cotton rope can be installed in a side of any test surfaces of tested engineering structural system, for big tested hollow engineering structural system, gentle shape cotton rope also can pass from its hollow side near test surfaces, and angular displacement sensor then can be fixed on the hollow build-in test face of tested engineering structural system.Angular displacement sensor selects for use precision and resolving power higher, and less the getting final product of driving torque.Spiral arm employing finish is higher, in light weight, rigidity φ 3mm～φ 5mm stainless steel tube or the making of alloy aluminum pipe preferably.During observation, with the static reference point of gentle shape cotton rope as this measuring system, when tested engineering structural system stress deformation, angular displacement sensor together moves with tested engineering structural system, spiral arm and hang between the contact point of the gentle shape cotton rope be pulled in stationary object and produce relative angular displacement, the angular displacement sensor that is fixed on the tested engineering structural system rotates its micro displacement amount of sensing by spiral arm with contacting of gentle shape cotton rope, to reach the purpose of measuring amount of deflection or sedimentation value.Because spiral arm is and the reliable sliding-contact of shape cotton rope that softens that under dynamic load, the moving displacement signal of tested engineering structural system also can be delivered to angular displacement sensor and measure.
In sum, main points of the present invention are to be fixed on gentle shape cotton rope on the invariant position resting as the static reference point of measuring system, to be fixed on the amount of deflection or the sedimentation that contact each measuring point of perception measured object of its spiral arm of angular displacement sensor and gentle shape cotton rope on the tested engineering structural system, the invention advantage is very clear.For the abominable engineering site of environment, the simple metering system of the present invention had both overcome and utilizes laser to shoot at the target and optical lens target spot image-forming principle is measured amount of deflection or the existing installation and maintenance of sedimentation are difficult for, system complex, cost an arm and a leg, be not suitable in the abominable shortcomings such as the long-term Continuous Observation of engineering site of environment, overcome the stagnant stain of liquid flow that the liquid level law of connected vessels exists again, the degree of accuracy is not high, bad and the shortcoming that can not observe and write down dynamic deflection and sedimentation of repeatability has bigger practical value.
Claims (3)
1, a kind of method to engineering structures bulk measurement amount of deflection or sedimentation, it is characterized in that being fixed on a gentle shape cotton rope on the stationary object of the external two end invariant positions of tested engineering structures with constant tensile, be separately installed with some angle displacement sensors on each amount of deflection of tested engineering structural system or the sedimentation measuring point, the spiral arm of drawing in the rotating shaft of angle displacement sensor contacts with gentle shape cotton rope, when tested engineering structural system stress deformation, with gentle shape cotton rope as static reference point, with contacted each the angle displacement sensor spiral arm of gentle shape cotton rope with stressed rotation, its rotational orientation value is measured by each angle displacement sensor, can draw the amount of deflection or the sedimentation value of tested each measuring point of engineering structural system.
2, a kind of device to engineering structures bulk measurement amount of deflection or sedimentation, it is characterized in that this device is by a gentle shape cotton rope, some angle displacement sensors are formed, gentle shape rope is mounted on the stationary object of the external two end invariant positions of tested engineering structures with constant tensile, each angle displacement sensor is fixed on respectively on each amount of deflection sedimentation measuring point of tested engineering structural system, one end of spiral arm is fixed in the angle displacement sensor rotating shaft, the other end and the sliding-contact of gentle shape cotton rope, the output signal of each angle displacement sensor is connected with data Collection ﹠ Processing System by cable.
3, according to the device of said measurement amount of deflection of claim 2 or sedimentation, it is characterized in that spiral arm one end radially connects with the angular displacement sensor output shaft, the other end is 90 ° of bendings, sweep is parallel with the angular displacement sensor output shaft, be " cross " with gentle shape cotton rope and intersect, rely on the spiral arm self gravitation to be placed on sliding-contact on the gentle shape cotton rope.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006100188251A CN1948634B (en) | 2006-04-19 | 2006-04-19 | Method and device of measuring deflection settling of engineering structure body |
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| CN2006100188251A CN1948634B (en) | 2006-04-19 | 2006-04-19 | Method and device of measuring deflection settling of engineering structure body |
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| CN1948634A true CN1948634A (en) | 2007-04-18 |
| CN1948634B CN1948634B (en) | 2010-04-21 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168416A (en) * | 2010-12-31 | 2011-08-31 | 上海市东方海事工程技术有限公司 | Operating method for displacement-sensor-based angle monitoring system |
| CN102749037A (en) * | 2012-05-17 | 2012-10-24 | 合肥工业大学 | Photoelectric type derrick deflection detection device and detection method thereof |
| CN104677252B (en) * | 2015-03-02 | 2017-12-29 | 浙江大学 | Quick measuring strain strengthens the system and method for container axial deflection |
| CN110553809A (en) * | 2019-08-29 | 2019-12-10 | 朔黄铁路发展有限责任公司 | Bridge performance state monitoring system, method and device |
| CN112361178A (en) * | 2020-11-25 | 2021-02-12 | 武汉大学 | Model measurement system of irregular river channel |
| TWI744986B (en) * | 2020-07-16 | 2021-11-01 | 國立暨南國際大學 | Critical equilibrium device for controlling bridge deformation that reduce torsional deformation and method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86209308U (en) * | 1986-11-14 | 1987-11-04 | 四川省地质矿产局成都水文地质工程地质队 | Double purpose slide bodies settlement instrument |
| CN1095537C (en) * | 1999-01-25 | 2002-12-04 | 太原重型机械(集团)有限公司 | Laser detection method and apparatus for lower flexibility of main girder of crane |
| CN2532475Y (en) * | 2001-07-07 | 2003-01-22 | 重庆大学 | Direct projection type photoelectric disturbance displacement measurer |
| CN2662199Y (en) * | 2003-10-31 | 2004-12-08 | 吴晓铭 | Electronic settling monitoring instrument |
| CN100385201C (en) * | 2003-11-06 | 2008-04-30 | 同济大学 | Method for monitoring large span bridge structural deflection |
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2006
- 2006-04-19 CN CN2006100188251A patent/CN1948634B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168416A (en) * | 2010-12-31 | 2011-08-31 | 上海市东方海事工程技术有限公司 | Operating method for displacement-sensor-based angle monitoring system |
| CN102168416B (en) * | 2010-12-31 | 2012-06-20 | 上海市东方海事工程技术有限公司 | Operating method for displacement-sensor-based angle monitoring system |
| CN102749037A (en) * | 2012-05-17 | 2012-10-24 | 合肥工业大学 | Photoelectric type derrick deflection detection device and detection method thereof |
| CN102749037B (en) * | 2012-05-17 | 2014-11-05 | 合肥工业大学 | Photoelectric type derrick deflection detection device and detection method thereof |
| CN104677252B (en) * | 2015-03-02 | 2017-12-29 | 浙江大学 | Quick measuring strain strengthens the system and method for container axial deflection |
| CN110553809A (en) * | 2019-08-29 | 2019-12-10 | 朔黄铁路发展有限责任公司 | Bridge performance state monitoring system, method and device |
| TWI744986B (en) * | 2020-07-16 | 2021-11-01 | 國立暨南國際大學 | Critical equilibrium device for controlling bridge deformation that reduce torsional deformation and method thereof |
| CN112361178A (en) * | 2020-11-25 | 2021-02-12 | 武汉大学 | Model measurement system of irregular river channel |
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| CN1948634B (en) | 2010-04-21 |
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