CN104596471B - A kind of plate strain meter of monitoring of structures deformation and the monitoring device of iced areas gate structure deformation - Google Patents
A kind of plate strain meter of monitoring of structures deformation and the monitoring device of iced areas gate structure deformation Download PDFInfo
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- CN104596471B CN104596471B CN201410691324.4A CN201410691324A CN104596471B CN 104596471 B CN104596471 B CN 104596471B CN 201410691324 A CN201410691324 A CN 201410691324A CN 104596471 B CN104596471 B CN 104596471B
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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
- 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
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention is to provide a kind of plate strain meter of monitoring of structures deformation and the monitoring device of iced areas gate structure deformation, including two bases, the first support and second support that are separately mounted on two bases and the sensor installing pipe in first support, displacement sensor is installed on one end of sensor installing pipe, rodmeter is set among displacement sensor, one end of rodmeter is connected with copper pipe, the other end of rodmeter and one end of extension bar connect, the other end of extension bar is connected with one end of operation lever, the other end of operation lever is pierced by sensor installing pipe and is connected with second support, protective jacket is set with the operation lever outside sensor installing pipe, the both ends of protective jacket are respectively arranged with band.The present invention have the advantages that it is simple in structure, easy for installation, without calibration, measurement accurately and without temperature drift, deformation and stress state suitable for long term monitoring north iced areas hydraulic gate.
Description
Technical field
The present invention relates to iced areas hydraulic gate structural safety monitoring technical field, more particularly to a kind of monitoring of structures to become
The monitoring device of plate strain meter and iced areas the gate structure deformation of shape.
Background technology
With developing rapidly for navigation power key project on the seasonal frost river in China northeast and water conservancy, as avionics
The safety of structure of the water conservancy project floodgate of one of key equipment in ice conditions is increasingly taken seriously in multi-purpose project.I
The very long cold of state's the Northeast's winter climate, refrigerated environment can not only influence flood discharge normal operation, swollen caused by frozen in ice
It is swollen also to produce extruding force to gate, and then can cause gate that moderate finite deformation occurs, the structure safety of gate can be influenced when serious
And service life.Therefore, to floodgate malformation, stress and the ice load of seasonal frost river navigation power key project
Size is monitored with highly important engineering value and realistic meaning.And conventional invention often freezes Out of season
The gate deformation in river and stress are monitored, and are not accounted for the gate deformation under Ice Load, Er Qieduo
It is monitored using malformation of the resistance-strain chip technology to gate, stress, there are measuring point is more, conducting wire is more, viscous for such a method
It is vulnerable at patch, drift is big, therefore there is the shortcomings that being not suitable for the deformation of long term monitoring steel construction and strain.Chinese patent
(CN1039004614A) a kind of apparatus and method for detecting gate deformation are provided, in a device there is provided electromagnet, with vortex
Whether monitoring technology, deformed by measuring probe and the distance between steel plate detection door surfaces.
The content of the invention
The purpose of the invention is to propose a kind of monitoring knot of the monitoring iced areas of suitable northern navigation power key project
The plate strain meter of structure deformation and the monitoring device of iced areas gate structure deformation.
The object of the present invention is achieved like this：A kind of plate strain meter for monitoring the deformation of iced areas gate structure, including two
A base, the first support being separately mounted on two bases and second support and the sensor peace in first support
Tubulature, displacement sensor are installed on one end of sensor installing pipe, rodmeter are set among displacement sensor, rodmeter
One end is connected with copper pipe, and the other end of rodmeter and one end of extension bar connect, and the other end of extension bar and one end of operation lever connect
Connect, the other end of operation lever is pierced by sensor installing pipe and is connected with second support, the operation lever outside sensor installing pipe
On be set with protective jacket, the both ends of protective jacket are respectively arranged with band.
A kind of monitoring device of iced areas gate structure deformation, main beam, secondary crossbeam on the non-obstructing surface of gate, every
The plate strain meter of monitoring of structures deformation and corresponding temperature sensor are installed on plate, panel and support arm, monitor iced areas gate knot
The plate strain meter of structure deformation is fixedly connected by two bases with gate, and a sealing thermal insulation babinet, seal thermal-insulation box are set on gate
Installation data collecting unit in body, data acquisition unit, plate strain meter and temperature sensor are respectively by cable and monitoring room
Data processing display unit is connected with alarm unit；The plate strain meter of the monitoring of structures deformation includes two bases, installs respectively
First support and second support on two bases and the sensor installing pipe in first support, displacement sensor
Rodmeter is set among one end of sensor installing pipe, displacement sensor, and one end of rodmeter and copper pipe connect
Connect, one end of the other end of rodmeter and extension bar connects, and the other end of extension bar is connected with one end of operation lever, operation lever it is another
One end is pierced by sensor installing pipe and is connected with second support, and protection is set with the operation lever outside sensor installing pipe
Set, the both ends of protective jacket are respectively arranged with band.
Present invention additionally comprises some such architectural features：
Institute's displacement sensors are LVDT displacement sensors.
Compared with prior art, the beneficial effects of the invention are as follows：Plate strain meter provided by the invention can solve profit well
The problem of iced areas gate structure deformation can not be monitored in real time for a long time with general measuring method, overcome similar hairs a variety of before this
The precision of bright middle measuring method is relatively low, drift is big, is not suitable for the defects of long term monitoring.Plate strain meter provided by the present invention has knot
Structure is simple, measurement is accurate, easy to use, cost is low, is adapted to the features such as long term monitoring, and the plate strain meter is installed on gate and is coordinated
No temperature drift can be realized by temperature sensor.
Brief description of the drawings
Fig. 1 is the front view of the plate strain meter of the monitoring of structures deformation of the present invention；
Fig. 2 is the top view of the plate strain meter of the monitoring of structures deformation of the present invention；
Fig. 3 is the side view of the plate strain meter of the monitoring of structures deformation of the present invention；
Fig. 4 is the A-A partial sectional views of the plate strain meter of the monitoring of structures deformation of the present invention；
Fig. 5 is the schematic view of the mounting position of support arm upper steel plate meter；
Fig. 6 is the schematic view of the mounting position of the non-obstructing surface upper steel plate meter of gate；
The composition schematic diagram of the monitoring device of the iced areas gate structure deformation of Fig. 7 present invention；
Fig. 8 is the flow chart of ice formation gate structure technology for deformation monitoring scheme.
Embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.
Case study on implementation one：With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of plate strain meter of monitoring of structures deformation provided by the invention,
Including two bases 21 and 26, the first support 13 being separately mounted on two bases 21 and second support 22 and installed in
Sensor installing pipe 8 on one stent 13, displacement sensor 2 is in one end of sensor installing pipe 8, displacement sensor 2
Between rodmeter 7 is set, one end of rodmeter 7 and copper pipe 1 connect, and the other end of rodmeter 7 connects with one end of extension bar 9
Connect, the other end of extension bar 9 is connected with one end of operation lever 12, and the other end of operation lever 12 is pierced by sensor installing pipe 8 and with
Two stents 22 are connected, and protective jacket 18, the both ends difference of protective jacket 18 are set with the operation lever 12 outside sensor installing pipe 8
Band 17 and 20 is provided with, institute's displacement sensors 2 are LVDT displacement sensors.
First by first support 13 using in the mounting seats 26 such as packing ring and nut, second support 22 uses and first support
Identical mounting means is installed on base 21；The distance between 22 location hole of first support 13 and second support can be according to reality
Border measurement needs, to select, to select in 50mm~500mm scopes.Secondly sensor installing pipe 8 is passed through into bolt and nut gasket
Combination 14,15,16 is connected with first support 13；One end of operation lever 12 passes through protective jacket 18, passes through extension bar 9 and rodmeter 7
Link together, O-shaped rubber seal 11 is set between operation lever 12 and sensor installation 8, the other end of operation lever 12 passes through
Bushing 23, bolt 24 and internal teeth serrated lock washer 25 and second support 22 link together；With interior between extension bar 9 and operation lever 12
It is threadedly coupled, and relative position is fixed with nut 10；The both ends of protective jacket are tightened with band 17,20 respectively, band 20 and operation
Rubber tube 19 is set between bar 12, and band can prevent external dust from sucking.The outside of displacement sensor 2 is cased with clamp ring 3, leads to
Cross screw 4, packing ring 5,6 fixed displacement sensor 2 of packing ring.After displacement sensor 2 installs, by copper pipe 1 from displacement sensing
Device 2 left side insertion, and with rodmeter 7, to ensure the gap uniformity between rodmeter 7 and sensor outer housing.
2 type selecting of LVDT displacement sensors in the present invention is sensor body and the separated form of amplifier, on amplifier
There are gain-adjusted and zero point adjusting knob, the measurement range of LVDT sensors can be flexibly set by adjusting two knobs,
It may be implemented in and measurement structure length is flexibly selected in the range of 50mm~500mm.
Case study on implementation two：With reference to Fig. 5, Fig. 6 and Fig. 7, the non-obstructing surface of general iced areas gate includes main beam 28, secondary
Crossbeam 29, top beam 30, partition plate 31, panel 32 and side case 33 form, and support arm 26 is connected by flexural pivot 27 with rack, institute of the present invention
A kind of monitoring device of the iced areas gate structure deformation provided, is main beam 28, secondary crossbeam on the non-obstructing surface of gate
The 29th, the plate strain meter of monitoring of structures deformation and corresponding temperature sensor, monitoring frost are installed on partition plate 31, panel 32 and support arm 26
The plate strain meter of region gate structure deformation is fixedly connected by two bases 21 and 26 with gate, and a sealing thermal insulation is set on gate
Babinet, installation data collecting unit in sealing thermal insulation babinet, data acquisition unit, plate strain meter and temperature sensor pass through electricity respectively
Cable is connected with the data processing display unit in monitoring room and alarm unit；The plate strain meter of the monitoring of structures deformation includes two
Base 21 and 26, the first support 13 being separately mounted on two bases 21 and second support 22 and installed in first support 13
On sensor installing pipe 8, displacement sensor 2 is installed on one end of sensor installing pipe 8, sets and pass among displacement sensor 2
Sensor bar 7, one end of rodmeter 7 and copper pipe 1 connect, and the other end of rodmeter 7 is connected with one end of extension bar 9, extension bar 9
The other end is connected with one end of operation lever 12, and the other end of operation lever 12 is pierced by sensor installing pipe 8 and consolidates with second support 22
Even, protective jacket 18 is set with the operation lever 12 outside sensor installing pipe 8, the both ends of protective jacket 18 are respectively arranged with band
17 and 20.
The monitoring device of the iced areas gate structure deformation of the present invention is that specific work process is such：
The plate strain meter that monitoring of structures provided by the invention is deformed first and the monitored lock of corresponding temperature sensor installation
The positions such as main beam, secondary crossbeam, partition plate, panel and support arm on the non-obstructing surface of door, installation site and quantity can be according to gates
Deformation simulation analysis result of the structure under Ice Load obtains.Secondly data acquisition unit is installed on monitored gate
In the sealing thermal insulation babinet of setting, and data processing display unit and alarm unit are all installed on navigation power key project
Monitoring room, uses cable connection between each unit.As shown in Figure 7：When gate DEFORMATION MONITORING SYSTEM is in use, displacement signal passes through
High frequency ac signal form is transferred to data acquisition unit, and the displacement signal after processing is transferred to place with RS-485 serial port forms
Manage data processing display unit.Data processing display unit mends the displacement signal of collection according to certain method into trip temperature
Repay, to eliminate the influence of temperature drift；Then according to the pass between gate structure deformation, ice load and the stress stored in database
System, the Stress Map of whole gate structure is obtained by linear difference, and carries out early warning to gate severe stress state, so that real
The monitoring of gate structure deformation, stress and ice load is showed.
As shown in Figure 8：First according to the structure type for the gate to be monitored, material, dimensional parameters and mounting means
Etc. data, gate structure finite element model is established；Secondly investigation Heilongjiang river ice load historical data information, by various situations
Under Ice Load on gate finite element model, carry out gate structure warped digital simulation analysis, provide gate structure
The selection scheme of numerical relationship model and gate structure distortion monitoring points between deformation, stress and ice load.By in the present invention
Plate strain meter be installed to according to the selection scheme of structural deformation monitoring point in tested floodgate structure, specific mount scheme is as follows
Step：Two pedestals are welded on gate steel construction first, the distance between two pedestals according to the requirement of simulation result come
Selection；Secondly first support and second support are installed on two pedestals；Then by sensor installing pipe, operation lever, extension bar,
Rodmeter, sensor etc. are respectively arranged on stent；Ensured by calibrating copper pipe between rodmeter and sensor inner wall
Gap uniformity.Finally by the relative position tightened between lock-screw fixation LVDT sensors and installing pipe.
And what the present invention was realized in gate structure deformation and stress monitoring in real time for a long time：Become first according to gate
Mathematical relationship between shape, stress and ice load, establishes various Ice Load tail gates deformations, the relational database of stress；
During gate structure deformation monitoring, the gate structure deformation data that is real-time monitored according to plate strain meter draws and acts on lock
Ice load status information on door, and then whole gate structure stress state information is obtained by data base querying, it is for gate
It will appear from severe stress state and carry out early warning, promote manager to take corresponding measure to ensure the structure of gate safety.
Claims (1)
- A kind of 1. monitoring device of iced areas gate structure deformation, it is characterised in that：Main beam on the non-obstructing surface of gate, The plate strain meter of monitoring of structures deformation and corresponding temperature sensor are installed on secondary crossbeam, partition plate, panel and support arm, monitor frost zone The plate strain meter of domain gate structure deformation is fixedly connected by two bases with gate, and a sealing thermal insulation babinet is set on gate, close Installation data collecting unit in thermal-insulating body is sealed, data acquisition unit, plate strain meter and temperature sensor pass through cable and prison respectively Data processing display unit in control room is connected with alarm unit；The plate strain meter of monitoring of structures deformation include two bases, The first support and second support that are separately mounted on two bases and the sensor installing pipe in first support, position Displacement sensor is installed on one end of sensor installing pipe, sets rodmeter among displacement sensor, one end of rodmeter and Copper pipe connects, and the other end of rodmeter and one end of extension bar connect, and the other end of extension bar is connected with one end of operation lever, operate The other end of bar is pierced by sensor installing pipe and is connected with second support, is set with the operation lever outside sensor installing pipe Protective jacket, the both ends of protective jacket are respectively arranged with band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410691324.4A CN104596471B (en) | 2014-11-25 | 2014-11-25 | A kind of plate strain meter of monitoring of structures deformation and the monitoring device of iced areas gate structure deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410691324.4A CN104596471B (en) | 2014-11-25 | 2014-11-25 | A kind of plate strain meter of monitoring of structures deformation and the monitoring device of iced areas gate structure deformation |
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| Publication Number | Publication Date |
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| CN104596471A CN104596471A (en) | 2015-05-06 |
| CN104596471B true CN104596471B (en) | 2018-04-24 |
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| CN105716658A (en) * | 2016-03-03 | 2016-06-29 | 华能澜沧江水电股份有限公司小湾水电厂 | Prototype stress strain testing method and system for gate |
| CN106052611A (en) * | 2016-05-24 | 2016-10-26 | 国家电网公司 | Gate opening degree monitor and control method thereof |
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| CN2274757Y (en) * | 1996-12-24 | 1998-02-18 | 北方交通大学 | Apparatus for measuring deformation of rails effected by temperature |
| US8432537B2 (en) * | 2008-06-16 | 2013-04-30 | Duhane Lam | Photoelastic coating for structural monitoring |
| CN103437325B (en) * | 2013-08-16 | 2015-05-27 | 李克华 | Ice expansion resistant device for water conservancy project |
| CN103822573B (en) * | 2014-02-27 | 2016-05-25 | 东北大学 | A kind of rock sample cubic deformation measurement mechanism and measuring method |
| CN103884266A (en) * | 2014-03-27 | 2014-06-25 | 深圳市信为科技发展有限公司 | LVDT type displacement sensor and vehicle load measuring system and method |
| CN203758496U (en) * | 2014-04-23 | 2014-08-06 | 河海大学 | Portable deformation monitoring device of reinforcing rib and top plate connector of steel bridge deck plate |
| CN103994716B (en) * | 2014-05-30 | 2016-06-29 | 东北大学 | A kind of distributed rock deformation measuring method |
| CN204313825U (en) * | 2014-11-25 | 2015-05-06 | 哈尔滨工程大学 | A kind of plate strain meter of monitoring of structures distortion and the monitoring device of iced areas gate structure distortion |
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