CN1425126A - Differential bending and/or subsidence detector and method for monitoring structure - Google Patents

Differential bending and/or subsidence detector and method for monitoring structure Download PDF

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Publication number
CN1425126A
CN1425126A CN 01808254 CN01808254A CN1425126A CN 1425126 A CN1425126 A CN 1425126A CN 01808254 CN01808254 CN 01808254 CN 01808254 A CN01808254 A CN 01808254A CN 1425126 A CN1425126 A CN 1425126A
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China
Prior art keywords
parts
detecting device
group
coupling arrangement
angular displacement
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CN 01808254
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Chinese (zh)
Inventor
伯纳德·胡达克
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Individual
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0025—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of elongated objects, e.g. pipes, masts, towers or railways
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention concerns a deflecting method whereby a succession of elements (1) designed to be placed against the structure to be monitored by pressing the baseplate (4) of each element against a surface of the structure. The elements (1) are linked by articulations (2) and the mutual angular deflection of the elements (1) is read by sensing devices (19). The signal from the sensors is processed by a processing unit (29). The invention is useful for very simple installation of an essentially prefabricated and pre-cabled detector.

Description

The detection method of inhomogeneous deflection and/or depression detecting device and structure
Technical field
The present invention relates to a kind of inhomogeneous deflection and/or depression detecting device.
The invention still further relates to the inhomogeneous deflection of detection architecture and/or the method for depression.
Certain nonaffine deformation that the present invention is specifically related to detect on geotechnics and is run into and the change of shape of tunnel internal, the geometrical stability of tracking structure.
" inhomogeneous depression " speech is meant strain or the distortion of sinking and so on unevenly with respect to other point in certain some place on the ground for example, and example is not limited only to this fully certainly.
Background technology
WO9742463A discloses a kind of detection method, comprising: treating that geodesic structure tightens close elongate spare (promptly so-called " model "), this model is embedded at least one optical fiber, when treating the side structure distortion, invests its surperficial model and is out of shape thereupon.Utilize the attenuation change of the optical signalling of optical fiber propagation to come the measurement model distortion.
This method provides a kind of so-called " total elongation detection method (long-base detection) ", promptly this method measured is not the local deformation at certain some place but total deflection: along the total deformation on the model length, or utilize that extrapolation method tries to achieve treat geodesic structure patrix type the total deformation on the total length that can not directly measure, this total deformation influences structure.
More relatively to the on-the-spot preliminary installation steps that the enforcement of this known method is required, in many cases, installing need be very accurate, particularly fibre-optic installation in the model.
Summary of the invention
The object of the present invention is to provide a kind of installation simple, and the apparatus and method of more local results can be provided.
According to the present invention, inhomogeneous deflection and depression detecting device are characterised in that and comprise:
(1), one group (at least two) by the interconnective parts of coupling arrangement, this group component-assembled becomes and treats that the surface configuration of geodesic structure matches, with deflection and/or the depression that detects this structure;
(2), be used to detect the pick-up unit of relative angular displacement between two adjacent components.
Owing to only need detecting device is fixed on the surface for the treatment of geodesic structure, detecting device of the present invention is installed simple.For example: in many cases, only utilize clamper just can finish the installation of detecting device.Under opposite extreme situations, for example when under fixed mode, or personal structure clamper finishes when installing, and only detecting device need be placed on the surface for the treatment of geodesic structure, and this process can be finished in tens seconds.This is very important at some special occasions, for example might use this detecting device under radioactive situation.
Detecting device of the present invention sends the corresponding signal of angle with the adjacent component junction, can obtain treating after local deformation amount and the distortion shape of geodesic structure according to this signal.It can also calculate the total deformation for the treatment of on the geodesic structure certain-length with known total elongation detection method.The principle of total elongation detection method is: on civil engineering construction, more can represent the danger of the structure under the strained situation that is in such or such local measurement with the overall strain integration on the mathematical meaning.
According to a second aspect of the invention, provide a kind of method that detects inhomogeneous deflection or depression.The method is characterized in that: several along installing at least a portion of body structure surface to be measured by the interconnective parts of coupling arrangement, detect the angular displacement between the adjacent component.
Other superior parts of the present invention will be discussed in more detail below, and embodiment is not limited thereto.
Description of drawings
Below be to brief description of drawings:
Fig. 1 is the skeleton view of inhomogeneous deflection of the present invention or depression detecting device;
Fig. 2 is the Fast Installation pattern that is installed on the detecting device below the beam to be measured;
Fig. 3 is the front elevation that is positioned at the detecting device below the beam to be measured;
Fig. 4 is the detailed view of the crossbeam after the middle distortion embodiment illustrated in fig. 3;
Fig. 5 is the view similar to Fig. 4, and just detecting device is installed on the beam to be measured;
Fig. 6 is the sectional view that the tunnel of detecting device of the present invention is installed; With
Fig. 7 is positioned over the ground detecting device view for the treatment of the side geometric configuration.
Embodiment
Inhomogeneous deflection of the present invention and/or depression detecting device 10 comprise that one group interconnects the parts 1 that form by hinge 2, and the hinge axis 3 of each hinge 2 is parallel to each other, and the direction of extending perpendicular to parts 1 sequence.
Each parts 1 comprises the substrate 4 with flat shape respectively, and hinge axis 3 is basic on the surface of substrate 4 and substrate 4 is aimed at mutually, and substrate 4 thereby can common application makes its lower support surface 6 contact with the body structure surface of easy deflection.
Each parts 1 is all L-shaped, and a L shaped side flange is made up of substrate 4, L shaped opposite side flange 7 vertical protrusion from the carrying plane 6 of substrate 4, and all flanges 7 are coplanes.Each flange 7 is provided with the end face 8 that the plane squint with respect to separately substrate 4 is provided with, so that two adjacent parts 1 opposing end faces 8 form a groove 9, this groove is V-shaped when all substrates 4 coplanes, and the parts 1 that are arranged so that of this groove 9 produce when relatively moving under the situation of original substrate 4 coplanes and can rotate each other around hinge axis 3 at end face 8.
Each substrate 4 comprises the device that parts 1 is fixed on body structure surface, in an embodiment, each substrate 4 comprises two holes 11 that are arranged on centre position on each parts 1 length direction, distance between two holes 11 parallels with the length direction of parts 1, in the preferred embodiment, each parts two hole 11 be arranged on equidistant centre position, parts 1 two ends on, thereby the distance in 11 in two holes is compared relative less with the length of whole parts.
As shown in Figure 4, the detecting device that is arranged so that in hole 11 can be fixed on structure (being crossbeam 12) herein, the supporting surface 6 that makes substrate 4 and structure convex surfaces or under the deflection situation easily raised surface 13 contact.
For this reason, adopted fixed part 14 (not being shown specifically among the figure) among the embodiment, optional bolt or screw rod.
Because two fixed parts 14 are corresponding with the hole 11 of each parts 1 respectively, thereby the supporting surface 6 of substrate 4 is tangent at the place, centre position of each parts 1 with beam surface 13, and this will make substrate 4 reflect the curved profile on surface 13 more realistically along dotted line.Therefore, parts 1 should be arranged to be not easy to crooked along with the bending of structure, and the L shaped parts 1 that make of parts 1 are not easy to bending.
In some cases, detecting device need be installed on nonplanar surface, or to be installed in the surface be not on the very smooth plane.Therefore, as shown in Figure 1, substrate 4 can also comprise one or more adjustable support components 16 (only showing on parts).Each support component 16 can comprise bolt 17, and in the threaded hole of the screw-in substrate 4 that bolt can be more or less, therefore, supporting surface 18 stretches out the length on surface 6 can be regulated.Support component 16 can be adjusted and make each parts all be maintained fixed state on body structure surface in actual installation.
The main body 21 that detects the pick-up unit 19 of the angular displacement between two adjacent components 1 is fixed on the flange 7 of parts 1, and its movable terminal 22 is fixed on the flange 7 of adjacent parts 1.The main body 21 of the Angular Displacement Detecting device 19 on two adjacent flanges 7 and the line 23 of movable terminal 22 extend a segment distance from the hinge axis 3 of hinge 2.In other words, line 23 and axle 3 and non-intersect.
Detecting angular displacement carries out along line 23.Therefore, just can detect angular displacement by detecting to change along the distance on along the line 23 between adjacent two parts 1.
Disclosed sensor among disclosed sensor or the Jap.P. JP6291249 in the pick-up unit 19 preferred DE3902997 patents according to above-mentioned patent, is equipped with two groups of optical fibers that form the loop in the foundry goods 21.Wherein fix with respect to foundry goods for one group; One group is slidably, in the slidably end 22 of sensor is housed.A fibre-optic end 24 is from light source 26, and the other end 27 links to each other with the device 28 of detector institute receiving light power degree.When the angle between the adjacent parts 1 changes, sensor movable terminal 22 produces displacement corresponding to main body 21, this will cause the variation of the curvature of fibre-optic sweep in 21, thereby cause the variation of optical attenuation in the optical fiber, and this variation will be detected by device 28.
The variation of installing 28 detected light intensities is sent to processing unit 29 with digital form, processing unit after 13 distortion of display structure surface on the display screen 31 profile 32 or further with the form output result of parameter.For example: body structure surface 13 is alongst gone up the stress value at the displacement measurement at difference place or also further respective point place.
Fig. 2 shows detecting device of the present invention and can only utilize clamper 33 to be installed in apace on the structure 12, and for example, the parts 1 of each detecting device have used a clamper 33.This installation can be finished within tens seconds.
Fig. 3 shows the length of parts 1 can be different, and very short parts are installed in the high stress areas of expectation, or the stress zone of concentrating, for example, and near the pillar of the crossbeam 12 or zone that applies external force of crossbeam 12.Fig. 3 also shows on the part that can only be installed in other structures that a part on the beam 12 or band survey of detecting device 10, for example: the zone that detecting device 10 can be installed in the stress maximum.The stress of crossbeam 12 other parts can utilize extrapolation method to release from the distortion of detecting device institute surveyed area.
Fig. 5 show that detecting device 10 also can be installed in concave surface or the face 34 that under stress, is easy to become recessed on.In this case, preferably select for use device 36 (not being shown specifically among the figure) to fix parts 1, device 36 and hinge 2 coupling, this mode make on the parts 1 on the substrate particularly away from the zone of hinge 2, because the effect of concavity and body structure surface 34 are from until required distance.
No matter be under which kind of mounting means, hinge axis 3 parallels with the axle center of the curve that the strain or the distortion of expection produce.
Embodiment as shown in Figure 6, detecting device 10 are installed on the inside surface of sidewall 41 in tunnel 42 and on the inside surface 43 of tunnel vault, and detecting device is along the xsect setting.
Embodiment as shown in Figure 7, detecting device 10 is installed on the ground 44.Detecting device 10 relies on the effect of gravity to be fixed on the ground 44, and what parts will be made is enough heavy so that parts 1 fully contact with ground 44, and in this embodiment, detecting device 10 does not need to adopt stationary installation.
Certainly, the invention is not restricted to the described content of the foregoing description.
Although preferred fiber is come the displacement between the detection part owing to the consideration of reliability and stability, the detection mode of other angular displacement also can be considered.
Hinge also can be replaced with flexibly connecting, and for example elasticity connects.

Claims (15)

1, a kind of inhomogeneous deflection and/or depression detecting device is characterized in that comprising:
One group at least two are passed through the interconnective parts of coupling arrangement (2) (1), and the shape on structure (12) surface (13,34) of this group parts group and inhomogeneous deflection to be measured and/or depression matches; With
Be used to detect the pick-up unit (19) of relative angular displacement between two adjacent components (1).
2, detecting device as claimed in claim 1 is characterized in that:
The pick-up unit of angular displacement (19) comprises the device that detects distance between two points on above-mentioned two parts, and above-mentioned 2 place on the line (23), and this line (23) extends a segment distance from the axle (3) of coupling arrangement (2).
3, detecting device as claimed in claim 2 is characterized in that:
Described distance detection device (19) comprises that at least one effectively is installed between the described optical fiber (24,27) at 2.
4, as the described detecting device of one of claim 1-3, it is characterized in that:
The flange (7) that each parts (1) comprise fixing base (4) and hold up from aforesaid substrate; Wherein coupling arrangement (2) connects adjacent two parts (1) near substrate plate (4); The pick-up unit of angular displacement (19) is connected on the parts flange (7).
5, as the described detecting device of one of claim 1-4, it is characterized in that:
Described detecting device also comprises each parts is fixed on structural stationary installation to be measured (11), and this stationary installation is arranged on the centre position between the parts two ends.
6, detecting device as claimed in claim 5 is characterized in that:
Described stationary installation (11) is arranged so that parts (1) and treats that the surface (13) of geodesic structure (12) is tangent.
7, as claim 5 or 6 described detecting devices, it is characterized in that:
Described stationary installation (11) comprises two independent parts, and it is provided with from a distance along parts order direction substantially.
8, as the described detecting device of one of claim 1-7, it is characterized in that:
In the part of the coupling arrangement (2) of adjacent two parts (1), this detecting device also comprises the stationary installation (36) that is used for fixing one group of parts (1).
9, as the described detecting device of one of claim 1-8, it is characterized in that:
Described detecting device is on parts (1) order direction, and parts have two kinds of different length at least.
10, as the described detecting device of one of claim 1-9, it is characterized in that:
Adjustable support unit (16) is set on parts (1) at least, is used for the stable supporting of geodesic structure (12) for the treatment of.
11, the method for inhomogeneous deflection of a kind of detection architecture and/or depression is characterized in that:
Several along installing at least a portion for the treatment of geodesic structure (12) surface (13,34) by the interconnective continuous member of coupling arrangement (2) (1);
Detect the angular displacement between two continuous members.
12, method as claimed in claim 11 is characterized in that:
Detecting device is installed in the step that is easy on the raised surface (13), comprises that the center section that makes parts (1) is tangent with surface (13).
13, method as claimed in claim 12 is characterized in that:
The step of utilizing two stationary installations (14) to fix each parts (1) is wherein arranged fixed part substantially along parts (1) order direction.
14, method as claimed in claim 11 is characterized in that:
Near the coupling arrangement (2) one group of parts (1) are being fixed on the structure (12).
15, as the described method of one of claim 11-14, it is characterized in that:
Utilize fast fixture, for example clamper (33) is fixed on one group of parts (1) on the surface (13,34,44); Perhaps only utilize the effect of gravity that one group of parts (1) are pressed on the surface (44).
CN 01808254 2000-04-17 2001-04-17 Differential bending and/or subsidence detector and method for monitoring structure Pending CN1425126A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0004950A FR2807829B1 (en) 2000-04-17 2000-04-17 BENDING DETECTOR AND / OR DIFFERENTIAL SETTLEMENT (S) AND METHOD FOR MONITORING A STRUCTURE
FR00/04950 2000-04-17

Publications (1)

Publication Number Publication Date
CN1425126A true CN1425126A (en) 2003-06-18

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CN 01808254 Pending CN1425126A (en) 2000-04-17 2001-04-17 Differential bending and/or subsidence detector and method for monitoring structure

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EP (1) EP1295082A1 (en)
JP (1) JP2004501345A (en)
CN (1) CN1425126A (en)
AU (1) AU2001254859A1 (en)
FR (1) FR2807829B1 (en)
TW (1) TW505780B (en)
WO (1) WO2001079783A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108943205A (en) * 2018-04-25 2018-12-07 江山显进机电科技服务有限公司 Double-deck double upper overturning timber panel point pressure type pressing detection aligning gears
CN108982236A (en) * 2018-07-17 2018-12-11 张淼淼 A kind of quality inspection technique of quantum secret communication transmission fiber

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Publication number Priority date Publication date Assignee Title
DE3036950A1 (en) * 1980-09-30 1982-05-13 Siemens AG, 1000 Berlin und 8000 München FIBER OPTICAL BRIDGE SWITCH
JPS6173020A (en) * 1984-09-18 1986-04-15 Takenaka Doboku Co Ltd Automatic measuring device for underground displacement
JPS63221213A (en) * 1987-03-10 1988-09-14 Hokkaido Kaihatsukiyoku Kensetsu Kikai Kousakushiyochiyou Measuring instrument for inclinometer type block installation finish shape
DE3902997C1 (en) * 1989-02-02 1990-04-19 Felten & Guilleaume Energietechnik Ag, 5000 Koeln, De
US5208995A (en) * 1992-03-27 1993-05-11 Mckendrick Blair T Fixture gauge and method of manufacturing same
WO1994001042A1 (en) * 1992-07-06 1994-01-20 Kramer James F Determination of kinematically constrained multi-articulated structures
US5323541A (en) * 1993-02-24 1994-06-28 Burnham Dwayne L Template for laying out a one-piece cover for a stair step
FR2748325B1 (en) * 1996-05-03 1998-08-07 Deha Com FLEXION DETECTION METHOD AND DEVICES, AND STRUCTURE SUCH AS GEOTECHNICAL OR BUILDING, EQUIPPED WITH SUCH A DEVICE
JPH10186165A (en) * 1996-12-24 1998-07-14 Kyocera Corp Optical demultiplexing unit or optical branching unit
JP3949731B2 (en) * 1997-03-17 2007-07-25 カナディアン・スペース・エージェンシー Tools for measuring position and movement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108943205A (en) * 2018-04-25 2018-12-07 江山显进机电科技服务有限公司 Double-deck double upper overturning timber panel point pressure type pressing detection aligning gears
CN108982236A (en) * 2018-07-17 2018-12-11 张淼淼 A kind of quality inspection technique of quantum secret communication transmission fiber
CN108982236B (en) * 2018-07-17 2020-11-27 杭州翔毅科技有限公司 Quality inspection process for quantum secret communication transmission optical fiber

Also Published As

Publication number Publication date
EP1295082A1 (en) 2003-03-26
FR2807829A1 (en) 2001-10-19
JP2004501345A (en) 2004-01-15
WO2001079783A1 (en) 2001-10-25
TW505780B (en) 2002-10-11
AU2001254859A1 (en) 2001-10-30
FR2807829B1 (en) 2002-07-12

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