CN107036522A - A kind of Middle Or Small Span bridge boat structure vertical displacement measuring device and method - Google Patents
A kind of Middle Or Small Span bridge boat structure vertical displacement measuring device and method Download PDFInfo
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- CN107036522A CN107036522A CN201611085795.6A CN201611085795A CN107036522A CN 107036522 A CN107036522 A CN 107036522A CN 201611085795 A CN201611085795 A CN 201611085795A CN 107036522 A CN107036522 A CN 107036522A
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- China
- Prior art keywords
- displacement
- displacement meter
- crossbeam
- vertical displacement
- telescope support
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
-
- 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
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention discloses a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device and method, it is adaptable to the deflection of bridge structure measurement of the detection field of bridge, particularly cross a river.The present invention includes telescope support and displacement acquisition device, and the telescope support can stretch, fold；The measurement of bridge vertical displacement effectively can be passed through the remote oblique measurement structure vertical displacement information of oblique pull lead realization by the displacement acquisition device；The measuring method is to realize premeasuring by the flexible of telescope support and provide displacement meter correction factor, and actual measurement vertical displacement is accurately calculated according to displacement meter correction factor.The present invention is easy to engineering truck carrying and survey crew are live to install and use, and adapts to complicated, dangerous environment measurement, greatly improves the measuring environment of survey crew and measuring apparatus.
Description
Technical field
The present invention relates to the detection field of Middle Or Small Span bridge, more particularly to a kind of Middle Or Small Span bridge boat structure vertical displacement
Measurement apparatus and method.
Background technology
With the development of society, bridge plays more and more important effect as the important component of present traffic.
But in recent years, many bridge structures built in the past are required for carrying out complete detection, wherein important one is exactly to carry energy
Power is evaluated, and the direct method that ensure that Bearing Capacity Evaluation reliable results is exactly loading test.In loading test, amount of deflection is (perpendicular
To displacement) be bridge structure operation state concentrated expression, be bridge structure most directly and intuitively one of safety index, but bridge
Environment, topography-geomorphology below girder construction is often sufficiently complex, and displacement meter and testing staff can not work immediately below it.In order to
Deflection of bridge span is measured, generally requires to dispose scaffold immediately below it, wastes time and energy, the dilutional hyponatremia if bridge is gone to river, scaffold is steady
It is qualitative to be difficult to be protected, threaten personal security.
The content of the invention
Present invention aims at provide a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device and method, the invention
So that displacement meter be not in contact with bridge and not immediately below measurement position in the case of there is provided accurate reliable displacement measurement.
The present invention concrete scheme be：A kind of Middle Or Small Span bridge boat structure vertical displacement measuring device, including flexible branch
Frame and displacement acquisition device；Described telescope support includes fixed suspension column, fixed column, telescopic arm, crossbeam, pulley and rigid bottom
Plate；It is bolted between the fixation suspension column and fixed column of the telescope support；The telescopic arm of the telescope support passes through solid
Locking cap on fixed column is fixed；The crossbeam and telescopic arm of the telescope support connect through circular shaft connection, crossbeam lower surface and stretch
There are 5mm spaces between contracting arm；There is thimble groove at two ends on the crossbeam of the telescope support；Described displacement acquisition device includes position
Move meter, amendment displacement meter, signal sampler, weight, Magnetic gauge stand and indium steel wire；One end of described weight connects with indium steel wire
Connect, the displacement meter of the other end withstands on the lower section of weight；Two amendment displacement meters are withstood in the thimble groove on crossbeam respectively, three
Magnetic gauge stand is arranged on stiff baseplate, and two amendment displacement meters and a displacement meter are hold respectively；Displacement meter and amendment position
Meter is moved to be connected on signal sampler by water conservancy project cable.
Further, pulley, the axis of pulley and the centerline collineation of crossbeam are provided between described crossbeam.
Further, steel bushing is provided with the outside of described weight, the both sides of steel bushing are fixed on crossbeam by sleeve suspension rod.
Further, the displacement meter and amendment displacement meter are resistance-type displacement meter.
Further, the signal sampler is resistance-type deformeter.
A kind of Middle Or Small Span bridge boat structure vertical displacement measuring method that the present invention is provided, what the measuring method was implemented
Step is as follows：
Step 1：Locking cap is unclamped manually, telescopic arm is lifted up according to by the displacement of estimating of geodesic structure, is then tightened solid
Determine cap to be fixed；
Step 2：Reading change S1, S2 of displacement meter are corrected in collection two, and the reading of displacement meter changes △ H；
Step 3：Calculate displacement meter correction factorWherein △ S=(S1+S2)/2, η>1；
Step 4：Locking cap is unclamped manually, and retraction telescopic arm is basic to original state and fixation, reduces systematic error；
Step 5：Scene loading, the reading change △ H of collection displacement meter；
Step 6：Calculate structure actual displacement S=η * △ H.
The beneficial effect comprise that：It can use manpower and material resources sparingly, subtract under the premise of ensureing measurement accurately reliably
Under hazards during few Test on Bridge Loading in the difficulty and detection process of detection displacement, convenient complexity landform, ambient conditions
Detection.
Brief description of the drawings
Fig. 1 is the structural representation that the present invention is implemented；
Fig. 2 is the measurement apparatus figure of the present invention；
Fig. 3 is the partial enlarged drawing of key position A in Fig. 2；
Fig. 4 is the partial enlarged drawing of key position B in Fig. 2；
Fig. 5 is the partial enlarged drawing of key position C in Fig. 2；
Fig. 6 is that schematic diagram is implemented in premeasuring；
Fig. 7 is displacement meter checkout coefficient schematic diagram calculation.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
Implementation of the present invention is that measurement apparatus is placed in the measured lower section of structure 19 arbitrarily it can be seen from Fig. 1 and Fig. 2
Position, by being the oblique pull of indium steel wire 13 on pulley 5 being glued on geodesic structure 19, bypasses the hanging weight 12 of pulley 5.
As shown in Fig. 2-Fig. 5, measurement apparatus of the invention is made up of telescope support and displacement acquisition device, wherein flexible branch
Frame is hung by stiff baseplate 17, fixed suspension column 1, fixed column 2, the telescopic arm 3 that can be lifted, crossbeam 4, pulley 5, steel bushing 6, sleeve
Bar 7 and locking cap 8 are constituted.Wherein the internal diameter of fixed column 2, which is slightly larger than in the overall diameter of telescopic arm 3, fixed column 2, screw, and rotation is fixed
Cap 8 can extrude telescopic arm to facilitate fixed telescopic arm 3, it is ensured that telescopic arm 3 can stretch；Telescopic arm 3 and crossbeam 4 pass through circular shaft
16 connections, the lower surface of crossbeam 4 has 5mm distances with telescopic arm so that be to be hinged between telescopic arm 3 and crossbeam 4, it is ensured that in telescopic arm
3 freely stretch in the case of crossbeam 4 it is indeformable；Fixed column 2 and fixed suspension column 1 are connected by bolt 15, and rotary nut can make
Fixed suspension column 1 is fixedly clamped post 2, and the fixed width of suspension column 1 is slightly larger than the width of fixed column 2, it is ensured that telescope support can be folded；Crossbeam
The thimble groove 18 of displacement meter is arranged at 4 bottoms two ends, for the thimble of fixed amendment displacement meter 10, prevents thimble from conjugating；Close to horizontal
The middle part of beam 4 is welded with sleeve suspension rod 7, and sleeve suspension rod 7 is welded on the both sides of steel bushing 6, and steel bushing 6 is used for stablizing weight 12.
Displacement acquisition device is by displacement meter 9, amendment displacement meter 10, signal sampler 11, weight 12, indium steel wire 13 and magnetic
Gauge stand 14 is constituted.Magnetic gauge stand 14 clamps displacement meter 9 and two amendment displacement meters 10, the amendment displacement meter 10 at the two ends of crossbeam 4
Thimble is put into the thimble groove 18 of the crossbeam shown in Fig. 4, and middle displacement meter 9 withstands on the bottom surface of weight 12, and weight 12 passes through indium
Steel wire 13 is suspended in steel bushing 6.Displacement meter 9 and amendment displacement meter 10 are connected on signal sampler by water conservancy project cable,
Connection method connects for full-bridge method.Signal sampler 11 gathers each displacement and counted, and is transferred to computer by USB conversion lines
On, preserve data using computer.
As shown in fig. 6, formally needing the amount of being predicted before measurement displacement, displacement meter correction factor is obtained.
Before measurement, the vertical displacement (amount of deflection) of structure is pre-estimated, telescopic arm 3 is then adjusted and by correcting displacement meter 10
Measure the two ends of crossbeam 4 and rise (reduction) height S1, S2, and the weight that 12 times resistance-type displacement meters 9 of weight are measured respectively
Hammer displacement difference Δ H (close to amount of deflection discreet value), wherein △ S=(S1+S2)/2 into shape.
As seen from Figure 7, when the middle part climb of crossbeam 4 is Δ S, the wire length of weight 12 increase Δ L, weight 12
When ascending amount displacement structure is vertical displacement, displacement meter correction factorη>1.Wherein Δ S-phase is to measurement
Point height, oblique wire length can be ignored substantially.Displacement meter correction factor is calculated after the amount of being predicted, is bounced back (rise)
Telescopic arm 3 reduces systematic error to original state.Then On-site Loading Test of Rc is started, the reading of collection displacement meter 9 changes △ H,
According to correction factor η, practical structures displacement is calculated, wherein calculation formula is：S=η * △ H.
Claims (6)
1. a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device, it is characterised in that：Adopted including telescope support and displacement
Acquisition means；Described telescope support includes fixed suspension column (1), fixed column (2), telescopic arm (3), crossbeam (4), pulley (5) and firm
Property bottom plate (17)；Connected between the fixation suspension column (1) and fixed column (2) of the telescope support by bolt (15)；It is described flexible
The telescopic arm (3) of support is fixed by the locking cap (8) in fixed column (2)；The crossbeam (4) and telescopic arm of the telescope support
(3) circular shaft (16) connection is connected through, there are 5mm spaces between crossbeam (4) lower surface and telescopic arm (3)；The telescope support
There is thimble groove (18) at two ends on crossbeam (4)；Described displacement acquisition device includes displacement meter (9), amendment displacement meter (10), letter
Number Acquisition Instrument (11), weight (12), Magnetic gauge stand (14) and indium steel wire (13)；One end of described weight connects with indium steel wire (13)
Connect, the displacement meter (9) of the other end withstands on the lower section of weight (12)；Two amendment displacement meters (10) withstand on crossbeam (4) respectively
In thimble groove (18), three Magnetic gauge stands are arranged on stiff baseplate (17), and two amendment displacement meters (10) are hold respectively
With a displacement meter (9)；Displacement meter (9) and amendment displacement meter (10) are connected on signal sampler by water conservancy project cable.
2. a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device according to claim 1, it is characterised in that：Institute
Pulley (5), the axis of pulley (5) and the centerline collineation of crossbeam (4) are provided between the crossbeam (4) stated.
3. a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device according to claim 1, it is characterised in that：Institute
Steel bushing (6) is provided with the outside of the weight (12) stated, the both sides of steel bushing (6) are fixed on crossbeam by sleeve suspension rod (7).
4. a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device according to claim 1, it is characterised in that：Institute
It is resistance-type displacement meter to state displacement meter (9) and amendment displacement meter (10).
5. a kind of Middle Or Small Span bridge boat structure vertical displacement measuring device according to claim 1, it is characterised in that：Institute
Signal sampler (11) is stated for resistance-type deformeter.
6. a kind of Middle Or Small Span bridge boat structure vertical displacement measuring method, the step of measuring method is implemented is as follows：
Step 1：Locking cap (8) is unclamped manually, is lifted up telescopic arm (3) according to by the displacement of estimating of geodesic structure (19), then
Locking cap (8) is tightened to be fixed；
Step 2：Reading change S1, S2 of displacement meter (10) are corrected in collection two, and the reading of displacement meter (9) changes △ H；
Step 3：Calculate displacement meter correction factorWherein △ S=(S1+S2)/2, η>1；
Step 4：Locking cap (8) is unclamped manually, and retraction telescopic arm (3) is basic to original state and fixation, reduces systematic error；
Step 5：Scene loading, the reading change △ H of collection displacement meter (9)；
Step 6：Calculate structure actual displacement S=η * △ H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611085795.6A CN107036522B (en) | 2016-11-30 | 2016-11-30 | Device and method for measuring vertical displacement of water structure of middle-span and small-span bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611085795.6A CN107036522B (en) | 2016-11-30 | 2016-11-30 | Device and method for measuring vertical displacement of water structure of middle-span and small-span bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107036522A true CN107036522A (en) | 2017-08-11 |
| CN107036522B CN107036522B (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611085795.6A Active CN107036522B (en) | 2016-11-30 | 2016-11-30 | Device and method for measuring vertical displacement of water structure of middle-span and small-span bridge |
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| Country | Link |
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| CN (1) | CN107036522B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405794A (en) * | 2018-11-30 | 2019-03-01 | 南昌大学 | A kind of displacement meter bracket and its setting method suitable for beam body amount of deflection on-site test |
| CN111174662A (en) * | 2020-03-13 | 2020-05-19 | 尹恒 | Displacement sensing device and application thereof |
| CN117387463A (en) * | 2023-12-12 | 2024-01-12 | 云南正浩建设工程有限公司 | Device and method for measuring vertical displacement of water structure of middle-span and small-span bridge |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0460093A (en) * | 1990-06-29 | 1992-02-26 | Kajima Corp | Displacement detecting method for underground continuous wall excavator |
| CN204881498U (en) * | 2015-08-19 | 2015-12-16 | 湖南科技大学 | Vertical measuring device that scratches of bridge |
| CN205373678U (en) * | 2015-10-15 | 2016-07-06 | 郑州大学 | Vertical displacement's testing arrangement at bottom of bridge |
| CN206291845U (en) * | 2016-11-30 | 2017-06-30 | 郑州大学 | A kind of Middle Or Small Span bridge boat structure vertical displacement measuring device |
-
2016
- 2016-11-30 CN CN201611085795.6A patent/CN107036522B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0460093A (en) * | 1990-06-29 | 1992-02-26 | Kajima Corp | Displacement detecting method for underground continuous wall excavator |
| CN204881498U (en) * | 2015-08-19 | 2015-12-16 | 湖南科技大学 | Vertical measuring device that scratches of bridge |
| CN205373678U (en) * | 2015-10-15 | 2016-07-06 | 郑州大学 | Vertical displacement's testing arrangement at bottom of bridge |
| CN206291845U (en) * | 2016-11-30 | 2017-06-30 | 郑州大学 | A kind of Middle Or Small Span bridge boat structure vertical displacement measuring device |
Non-Patent Citations (1)
| Title |
|---|
| 蓝章礼;杨小帆;: "非接触式张力线桥梁挠度测量系统" * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405794A (en) * | 2018-11-30 | 2019-03-01 | 南昌大学 | A kind of displacement meter bracket and its setting method suitable for beam body amount of deflection on-site test |
| CN111174662A (en) * | 2020-03-13 | 2020-05-19 | 尹恒 | Displacement sensing device and application thereof |
| CN111174662B (en) * | 2020-03-13 | 2021-12-14 | 尹恒 | Displacement sensing device and application thereof |
| CN117387463A (en) * | 2023-12-12 | 2024-01-12 | 云南正浩建设工程有限公司 | Device and method for measuring vertical displacement of water structure of middle-span and small-span bridge |
| CN117387463B (en) * | 2023-12-12 | 2024-02-13 | 云南正浩建设工程有限公司 | Device and method for measuring vertical displacement of water structure of middle-span and small-span bridge |
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| Publication number | Publication date |
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| CN107036522B (en) | 2023-05-26 |
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