CN108225164A - It is a kind of for hinged plate girder bridge beam bottom is opposite or absolute displacement measures device - Google Patents
It is a kind of for hinged plate girder bridge beam bottom is opposite or absolute displacement measures device Download PDFInfo
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- CN108225164A CN108225164A CN201711420784.3A CN201711420784A CN108225164A CN 108225164 A CN108225164 A CN 108225164A CN 201711420784 A CN201711420784 A CN 201711420784A CN 108225164 A CN108225164 A CN 108225164A
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- resistance
- girder
- plate
- displacement meter
- hinged plate
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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
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Bridges Or Land Bridges (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The present invention relates to a kind of for hinged plate girder bridge beam bottom is opposite or absolute displacement measures device, including a rotatable Magnetic gauge stand, the resistance-type displacement meter, wireless transmitter and the bottom bracket that are fastened on the universal support arm of Magnetic gauge stand, the resistance-type displacement meter is arranged on the lower section of hinge seam side plate-girder, the bottom bracket setting is on the ground, when the hinged plate girder bridge beam bottom relative displacement of detection, the pedestal absorption of the Magnetic gauge stand is in the bottom of hinge seam opposite side plate-girder；When the hinged plate girder bridge beam bottom absolute displacement of detection, universal support arm is rotated, making pedestal absorption, the wireless transmitter is fixed on resistance-type displacement meter, and is connect by connecting line with resistance-type displacement meter in the top surface of bottom bracket.Compared with prior art, the present invention without wiring, be not take up bridge downward driving space on bridge, installation is convenient, precision is higher and can continuously measure, can be used to measuring the relative displacement of beam bottom and absolute displacement simultaneously, Mid and minor spans is suitble to be hinged plate girder bridge detects.
Description
Technical field
The present invention relates to bridge technology fields, and in particular to plate girder bridge beam bottom is opposite or absolute displacement is surveyed for being hinged for one kind
The device of amount.
Background technology
Hinged plate girder bridge is relatively conventional in highway and Urban Bridge, have stress clearly, convenient construction, simple structure,
The advantages that building height is small, cost is relatively low.The polylith plate-girder of hinged plate girder bridge stitches lateral connection by hinge.Hinge seam is intact
When, the useful load part that can be will act on some beam is reached in its adjacent beams, is made the common stress of each plate-girder, is improved bridge
Integrated carrying ability；When different degrees of damage occurs in hinge seam, transmission force property declines, and the lateral ties between each plate-girder are cut
Weak, certain piece beam load can not be effectively transferred in adjacent beams, and then weakens each plate-girder and the carrying of hinged plate girder bridge entirety
Ability.Therefore, accurate evaluation hinge seam degree of injury is to judge hinged plate girder bridge power transmission situation and superstructure integral working
An important factor for.In the prior art, testing staff mostly carries out visual examination using naked eyes, it is difficult to comprehensively, accurately identify hinge seam
Damage position and degree.Judge hinge seam damage in this regard, there is scholar to propose both at home and abroad to cut with scissors the relative displacement size of seam both sides plate-girder
Hinder degree.Other certain methods are then related to the measurement of plate-girder bottom absolute displacement, wherein, hinged plate girder bridge is in normal state
With the structure under distress condition as shown in Figure 1 and Figure 2.
In addition, the integrated carrying ability of hinged plate girder bridge is also often evaluated by static loading experiment.In static loading experiment, loaded vehicle is successively
Each controlling sections on bridge are crossed, the absolute displacement of these positions is measured, analyzes, handled, and in some way compared with limit value.
Whether transfinited by absolute displacement and the degree more than limit value, the integrated carrying capability state of hinged plate girder bridge can be judged.
In terms of relative displacement measurement, patent of invention CN203069116U discloses a kind of concrete hollow slab girder hinge joint damage
Detection device.The device can record hinge seam relative displacement maximin, but applied to by hinge stitch relative displacement with
Judge that precision is insufficient, and can not obtain continuous measured value during the method for hinge seam damage.In addition, patent of invention CN202734754U is disclosed
A kind of hinge that measures stitches shear-deformable sensor, to obtain hinge seam relative displacement to push away by collecting the strain of test beam.The device
The shortcomings that have two, one is device install in itself it is relatively complicated；The second is displacement meter and Acquisition Instrument wired connection, connect to avoid
Line occupies space under bridge, it would be desirable to connecting line are close to bottom plane of main girder with certain means and laid, increase the whole peace of device
ETL estimated time of loading.The shortcomings that above-mentioned two patent is common is to be not used to measure absolute displacement.
In terms of absolute displacement measurement, current common method is to set target spot at beam bottom, with total powerstation or laser radar etc.
Device record target position variation, and then obtain the absolute displacement of measuring point.Equipment needed for the method is expensive, and installation procedure is complicated,
It is not appropriate for using to measure the unit that based on middle-small span or qualification is relatively low.In addition, by such equipment application in opposite position
During shift measurement, the accuracy requirement that hinge seam injury tolerance is judged with relative displacement can not be met.
Therefore, inventing one kind, convenient, precision is higher and can continuously measure, can be used to measure simultaneously without connecting up, installing
The device that relative displacement and absolute displacement, suitable Mid and minor spans are hinged plate girder bridge detection is highly important.
Invention content
Phase can be measured simultaneously it is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of
To the measuring device of displacement and absolute displacement.
The purpose of the present invention can be achieved through the following technical solutions：One kind is opposite or exhausted for hinged plate girder bridge beam bottom
To the device of displacement measurement, which includes a rotatable Magnetic gauge stand, the electricity being fastened on the universal support arm of Magnetic gauge stand
Resistive displacement meter, wireless transmitter and bottom bracket, the resistance-type displacement meter are arranged on the lower section of hinge seam side plate-girder, institute
State bottom bracket setting on the ground, when the hinged plate girder bridge beam bottom relative displacement of detection, the pedestal absorption of the Magnetic gauge stand
On the second affixed tablet of the bottom of hinge seam opposite side plate-girder；When the hinged plate girder bridge beam bottom absolute displacement of detection, rotation
Universal support arm makes pedestal adsorb in the top surface of bottom bracket, and the wireless transmitter is fixed on resistance-type displacement meter, and is passed through
Connecting line is connect with resistance-type displacement meter.
The Magnetic gauge stand includes universal support arm and the pedestal being connect with universal support arm one end, the universal support arm
The other end is equipped with anchor ear, and the resistance-type displacement meter is fastened in anchor ear.Universal support arm is alternately connected by flexural pivot and more straight-bars
It forms.
The second tablet is fixed in the bottom of one block of plate-girder by expansion bolt, which is not located at resistance-type displacement meter
Top plate-girder.Since plate-girder is reinforced concrete structure, so can not fixation mutually directly be adsorbed with magnetic base, so in plate
The bottom of beam sets the second tablet, and magnetic by pedestal adsorbs pedestal on the second tablet.
Second tablet is steel plate, and material cheaply easily takes.
The resistance-type displacement meter is set there are one vertical telescopic probe, under original state, the probe and hinge seam one
The bottom of side plate beam abuts.
The bottom of plate-girder above resistance-type displacement meter, which is pasted, is equipped with the first tablet, the bottom of first tablet with
Probe abuts.After the damage of hinge seam or destruction, under load action, the plate-girder of hinge seam both sides is existing may to generate vertical displacement,
It is also possible to that lateral displacement can be generated.Plate-girder bottom surface is often relatively rough, and there are the surface defects such as pit or protrusion sometimes.Cause
This, even if probe is made to be located at smooth plate-girder bottom surface in installation displacement timing, but when the plate-girder of hinge seam both sides generates lateral phase
During to displacement, probe is possible to move the position to pit or protrusion.At this point, contact surface vertical height generates non-board Liang Sicheng
Caused variation, and then cause the output of displacement meter exception as a result, the first tablet is therefore set to avoid the problem.
First tablet is glass plate, can be to avoid the first tablet of plate surface of itself because glass plate is very smooth
Defect can influence measurement accuracy.
Described device includes a wireless transmitter connected by connecting line with resistance-type displacement meter, using wireless transmission
Device and wireless base station are wirelessly transferred displacement meter measured data, avoid the disadvantage of sensor and acquisition instrument wired connection
End.In addition, wireless transmitter can be anchored on resistance-type displacement meter with displacement meter with fastener, doing so can make wirelessly as possible
Transmitter is kept at a distance with magnetic Magnetic gauge stand pedestal, reduces interference of the magnetic field to circuit and wireless signal.All nothings
The information that line transmitter is emitted can be received by same wireless base station, therefore can't increase the quantity of wireless collection equipment,
Cause additional operation complexity.
The specific work process of the present apparatus is as follows：
When needing to measure relative displacement, the second tablet is fixedly connected on to the bottom of hinge seam side plate-girder, makes resistance-type
The probe of displacement meter is contacted with the first tablet, and after starting measurement, the relative displacement of hinge seam both sides plate-girder causes resistance-type displacement meter
Probe positions variation, and then make resistance-type displacement meter output valve change；The variation of these resistance-type displacement meter output valves via
Wireless transmitter is transferred in the form of wireless signal positioned at the wireless base station on ground；Wireless base station is connect with compunlcation, will
Resistance-type displacement meter output valve after acquisition sends computer to and is handled.
When needing to measure absolute displacement, Magnetic gauge stand pedestal is fixed on the top of bottom bracket, by adjusting magnetic table
The universal support arm of seat makes the probe of resistance-type displacement meter contact with the first tablet, after starting measurement, plate-girder relative to bottom
The absolute displacement of stent causes displacement meter probe positions to change, and then changes resistance-type displacement meter output valve；These resistance-types
The variation of displacement meter output valve is transferred in the form of wireless signal via wireless transmitter positioned at the wireless base station on ground；Nothing
Line base station is connect with compunlcation, and sending the resistance-type displacement meter output valve after acquisition to computer is handled.
When needing while measuring relative displacement and absolute displacement, in the plate-girder bottom of hinge seam both sides using with measuring absolutely
Align phase shift with arrangement, after starting measurement, the hinge seam respective absolute displacement of both sides plate-girder causes two resistance-type displacement meters
The position of probe generates different variations, and then makes the respective output valve variation of two resistance-type displacement meters；And pass through respective
Wireless transmitter is transferred in the form of wireless signal positioned at the wireless base station on ground；Wireless base station is connect with compunlcation, will
Resistance-type displacement meter output valve after acquisition sends computer to and carries out data processing, two respective output valves of resistance-type displacement meter
Difference be cut with scissors seam both sides plate-girder bottom relative displacement.
Compared with prior art, beneficial effects of the present invention are embodied in：Without wiring, it is not take up bridge downward driving sky on bridge
Between, installation is convenient, precision is higher and can continuously measure, can be used to measuring the relative displacement of beam bottom and absolute displacement simultaneously, is suitble to
Small across footpath is hinged plate girder bridge detection.
Description of the drawings
Fig. 1 is the hinged structure diagram of plate girder bridge in normal state；
Fig. 2 is hinged structure diagram of the plate girder bridge under distress condition；
Fig. 3 is structure diagram of the present apparatus when measuring relative displacement；
Fig. 4 is structure diagram of the present apparatus when measuring absolute displacement；
Fig. 5 is the structure diagram when present apparatus measures relative displacement and absolute displacement at the same time.
Wherein, 1 is plate-girder, and 2 be hinge seam, and 3 be bottom bracket, and 4 be universal support arm, and 41 be anchor ear, and 5 be pedestal, and 6 be steel
Plate, 7 be expansion bolt, and 8 be resistance-type displacement meter, and 81 be probe, and 9 be glass plate, and 10 be wireless transmitter, and 11 be connecting line.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
It is a kind of for the device that hinged plate-girder Bridge 1 beam bottom is opposite or absolute displacement measures, structure as shown in Fig. 3~Fig. 5,
Including a rotatable Magnetic gauge stand, the resistance-type displacement meter 8 that is arranged on Magnetic gauge stand one end, it is fixedly connected on resistance-type position
The wireless transmitter 10 and bottom bracket 3 on meter 8 are moved, resistance-type displacement meter 8 is arranged on the lower section of hinge 2 side plate-girders 1 of seam,
Bottom bracket 3 is set on the ground, when the hinged plate-girder Bridge 1 beam bottom relative displacement of detection, pedestal 5 and the hinge seam 2 of Magnetic gauge stand
The bottom absorption connection of opposite side plate-girder 1；When the hinged plate-girder Bridge 1 beam bottom absolute displacement of detection, spin magnetization gauge stand makes pedestal
5 abut with the top surface of bottom bracket 3.
Magnetic gauge stand includes universal support arm 4 and the pedestal 5 for being arranged on universal 4 one end of support arm, the other end of universal support arm 5
Equipped with for clamping the anchor ear 41 of resistance-type displacement meter 8.
The bottom of one block of plate-girder is equipped with steel plate 6, and steel plate 6 is fixedly connected on hinge 2 opposite side plate-girders 1 of seam by expansion bolt 7
Bottom.
Resistance-type displacement meter 8 is set there are one vertical telescopic probe 81, under original state, the probe 81 and hinge seam 2
The glass plate 9 of side plate-girder 1 abuts.
Device includes a wireless transmitter 10 connected by connecting line 11 and resistance-type displacement meter 8, using wireless hair
Emitter 10 and wireless base station are wirelessly transferred displacement meter measured data, avoid sensor and acquisition instrument wired connection
Drawback.
The specific work process of the present apparatus is as follows：
When needing to measure relative displacement, pedestal 5 is adsorbed in the bottom of steel plate 6, resistance-type displacement meter 8 is fixed on card
On hoop 41, the length of probe 81 is then adjusted, is allowed to contact with glass plate 9, after starting measurement, hinge stitches the opposite of 2 both sides plate-girders 1
Displacement causes 81 change in location of probe of resistance-type displacement meter 8, and then changes 8 output valve of resistance-type displacement meter；These resistance
The variation of 8 output valve of formula displacement meter is transferred to the wireless base positioned at ground via wireless transmitter 10 in the form of wireless signal
It stands；Wireless base station is connect with compunlcation, and sending 8 output valve of resistance-type displacement meter after acquisition to computer is handled, such as
Shown in Fig. 3.
When needing to measure absolute displacement, pedestal 5 is adsorbed in the upper surface of bottom bracket 3, resistance-type displacement meter 8 is consolidated
Be scheduled on clip 41, then adjust probe 81 length, be allowed to contact with glass plate 9, after starting measurement, plate-girder 1 relative to
The absolute displacement of bottom bracket 3 causes displacement meter 81 change in location of probe, and then changes 8 output valve of resistance-type displacement meter；This
The variation of a little 8 output valves of resistance-type displacement meter is transferred in the form of wireless signal positioned at ground via wireless transmitter 10
Wireless base station；Wireless base station is connect with compunlcation, and 8 output valve of resistance-type displacement meter after acquisition is sent at computer
Reason, as shown in Figure 4.
When needing to measure relative displacement and absolute displacement simultaneously, used and measurement in 1 bottom of plate-girder of 2 both sides of hinge seam
The identical arrangement of absolute displacement, after starting measurement, hinge seam 2 both sides plate-girder, 1 respective absolute displacement causes two resistance-type displacements
The position of the probe 81 of meter 8 generates different variations, and then makes two 8 respective output valve of resistance-type displacement meter variations；And lead to
Respective wireless transmitter 10 is crossed, is transferred in the form of wireless signal positioned at the wireless base station on ground；Wireless base station and computer
Communication connection, by two resistance-type displacement meters 8 after acquisition, respectively output valve sends computer progress data processing to, such as Fig. 5 institutes
Show.
Claims (7)
- It is 1. a kind of for hinged plate girder bridge beam bottom is opposite or absolute displacement measures device, which is characterized in that the device includes one A rotatable Magnetic gauge stand, resistance-type displacement meter, wireless transmitter and the bottom being fastened on the universal support arm of Magnetic gauge stand Stent, the resistance-type displacement meter are arranged on the lower section of hinge seam side plate-girder, and the bottom bracket setting on the ground, works as detection During hinged plate girder bridge beam bottom relative displacement, the pedestal absorption of the Magnetic gauge stand is affixed in the bottom of hinge seam opposite side plate-girder On second tablet；When the hinged plate girder bridge beam bottom absolute displacement of detection, universal support arm is rotated, makes pedestal absorption in bottom bracket Top surface, the wireless transmitter are fixed on resistance-type displacement meter, and are connect by connecting line with resistance-type displacement meter.
- 2. it is according to claim 1 a kind of for the device that hinged plate girder bridge beam bottom is opposite or absolute displacement measures, it is special Sign is that the Magnetic gauge stand includes universal support arm and the pedestal being connect with universal support arm one end, the universal support arm The other end is equipped with anchor ear, and the resistance-type displacement meter is fastened in anchor ear.
- 3. it is according to claim 1 a kind of for the device that hinged plate girder bridge beam bottom is opposite or absolute displacement measures, it is special Sign is that the second tablet is fixed in the bottom of one block of plate-girder by expansion bolt, which is not located at resistance-type displacement meter Top plate-girder.
- 4. it is according to claim 3 a kind of for the device that hinged plate girder bridge beam bottom is opposite or absolute displacement measures, it is special Sign is that second tablet is steel plate.
- 5. it is according to claim 1 a kind of for the device that hinged plate girder bridge beam bottom is opposite or absolute displacement measures, it is special Sign is, the resistance-type displacement meter is set there are one vertical telescopic probe, under original state, the probe and hinge seam side The bottom of plate-girder abuts.
- 6. it is according to claim 5 a kind of for the device that hinged plate girder bridge beam bottom is opposite or absolute displacement measures, it is special Sign is, the bottom of the plate-girder above resistance-type displacement meter, which is pasted, is equipped with the first tablet, the bottom of first tablet with Probe abuts.
- 7. it is according to claim 6 a kind of for the device that hinged plate girder bridge beam bottom is opposite or absolute displacement measures, it is special Sign is that first tablet is glass plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711420784.3A CN108225164A (en) | 2017-12-25 | 2017-12-25 | It is a kind of for hinged plate girder bridge beam bottom is opposite or absolute displacement measures device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711420784.3A CN108225164A (en) | 2017-12-25 | 2017-12-25 | It is a kind of for hinged plate girder bridge beam bottom is opposite or absolute displacement measures device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459384A (en) * | 2018-12-11 | 2019-03-12 | 扬州大学 | A kind of packaged type bridges hinge seam damage classifying classification evaluation method and evaluation system |
| CN109737897A (en) * | 2019-03-07 | 2019-05-10 | 王子琛 | A kind of hydraulic detection device of the plate-girder hinge seam vertical relative displacement in two sides |
| CN112857993A (en) * | 2021-01-05 | 2021-05-28 | 浙江省建筑科学设计研究院有限公司 | Method and device for evaluating damage of large hinge joint between precast slab beams |
| CN112945117A (en) * | 2021-01-26 | 2021-06-11 | 广西建宏工程科技有限公司 | Movable bridge deflection detector for bridge engineering detection |
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|---|---|---|---|---|
| DE3618663A1 (en) * | 1985-06-05 | 1986-12-11 | Sartorius GmbH, 3400 Göttingen | Cross-hinge joint for an electronic balance |
| CN102507667A (en) * | 2011-10-24 | 2012-06-20 | 上海浦公建设工程质量检测有限公司 | Detection method and detection device for hinged gap of plate-girder-hinged bridge |
| CN206523146U (en) * | 2017-02-08 | 2017-09-26 | 江西赣粤高速公路股份有限公司 | A kind of Hollow Slab Beam Bridge hinge seam lateral displacement monitoring device |
| CN107490334A (en) * | 2016-06-12 | 2017-12-19 | 上海中测行工程检测咨询有限公司 | Assembled plate-girder hinge seam damage evaluation method |
-
2017
- 2017-12-25 CN CN201711420784.3A patent/CN108225164A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3618663A1 (en) * | 1985-06-05 | 1986-12-11 | Sartorius GmbH, 3400 Göttingen | Cross-hinge joint for an electronic balance |
| CN102507667A (en) * | 2011-10-24 | 2012-06-20 | 上海浦公建设工程质量检测有限公司 | Detection method and detection device for hinged gap of plate-girder-hinged bridge |
| CN107490334A (en) * | 2016-06-12 | 2017-12-19 | 上海中测行工程检测咨询有限公司 | Assembled plate-girder hinge seam damage evaluation method |
| CN206523146U (en) * | 2017-02-08 | 2017-09-26 | 江西赣粤高速公路股份有限公司 | A kind of Hollow Slab Beam Bridge hinge seam lateral displacement monitoring device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459384A (en) * | 2018-12-11 | 2019-03-12 | 扬州大学 | A kind of packaged type bridges hinge seam damage classifying classification evaluation method and evaluation system |
| CN109737897A (en) * | 2019-03-07 | 2019-05-10 | 王子琛 | A kind of hydraulic detection device of the plate-girder hinge seam vertical relative displacement in two sides |
| CN112857993A (en) * | 2021-01-05 | 2021-05-28 | 浙江省建筑科学设计研究院有限公司 | Method and device for evaluating damage of large hinge joint between precast slab beams |
| CN112857993B (en) * | 2021-01-05 | 2024-03-19 | 浙江省建筑科学设计研究院有限公司 | Method and device for evaluating damage of large hinge joints between prefabricated plate beams |
| CN112945117A (en) * | 2021-01-26 | 2021-06-11 | 广西建宏工程科技有限公司 | Movable bridge deflection detector for bridge engineering detection |
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Application publication date: 20180629 |