CN104596471A - Plate strain meter for monitoring structural deformation and monitoring device for structural deformation of gate of frozen area - Google Patents
Plate strain meter for monitoring structural deformation and monitoring device for structural deformation of gate of frozen area Download PDFInfo
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- CN104596471A CN104596471A CN201410691324.4A CN201410691324A CN104596471A CN 104596471 A CN104596471 A CN 104596471A CN 201410691324 A CN201410691324 A CN 201410691324A CN 104596471 A CN104596471 A CN 104596471A
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- mounting pipe
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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 invention provides a plate strain meter for monitoring structural deformation and a monitoring device for the structural deformation of a gate of a frozen area. The plate strain meter comprises two bases, a first bracket, a second bracket and a sensor mounting pipe; the first bracket and the second bracket are respectively mounted on the two bases; the sensor mounting pipe is mounted on the first bracket; a displacement sensor is mounted at one end of the sensor mounting pipe; a sensor rod is arranged in the middle of the displacement sensor; one end of the sensor rod is connected with a steel pipe and while the other end of the sensor rod is connected with one end of a connecting rod; the other end of the connecting rod is connected with one end of an operating rod, and while the other end of the operating rod passes through the sensor mounting plate to be fixedly connected with the second bracket; a protecting sleeve sleeves the operating rod at the outer part of the sensor mounting pipe; binding belts are arranged at two ends of the protecting sleeve. The plate strain meter has the advantages of being simple in structure, convenient to mount, free of calibration, accurate to measure, and free of temperature excursion; the plate strain meter is suitable for being used for monitoring the deformation and stress state of a hydraulic gate of the frozen area in north for a long term.
Description
Technical field
The present invention relates to iced areas hydraulic gate structural safety monitoring technical field, particularly relate to the plate strain meter of a kind of monitoring of structures distortion and the monitoring device of iced areas gate structure distortion.
Background technology
Along with developing rapidly of navigation power key project on seasonal freezing river, China northeast and water conservancy, the water conservancy project floodgate safety of structure in ice conditions as one of key equipment in navigation power key project more and more comes into one's own.The very long cold of China's the Northeast's winter climate, refrigerated environment not only can affect flood discharge normal operation, the expansion produced during frozen in ice also can produce extruding force to gate, and then can cause gate generation moderate finite deformation, can affect structural safety and the serviceable life of gate time serious.Therefore, the floodgate malformation of seasonality freezing river navigation power key project, stress and ice load size are monitored there is very important construction value and realistic meaning.And invention is in the past out of shape the gate in the freezing river of Out of season often and stress is monitored, do not consider the gate deformation under Ice Load, and the resistance-strain chip technology that adopts is monitored the malformation of gate, stress more, this kind of method exists that measuring point is many, wire is many, easily lost efficacy in location for paste, drift large, therefore there is the shortcoming being not suitable for the distortion of long term monitoring steel construction and strain.Whether Chinese patent (CN1039004614A) provides a kind of apparatus and method detecting gate distortion, is provided with electromagnet in a device, uses eddy current monitoring technology, detect door surfaces deform by the distance between measuring sonde and steel plate.
Summary of the invention
The object of the invention is the plate strain meter of the monitoring of structures distortion of the monitoring iced areas in order to propose a kind of applicable northern navigation power key project and the monitoring device of iced areas gate structure distortion.
The object of the present invention is achieved like this: a kind of plate strain meter of monitoring the distortion of iced areas gate structure, comprise two bases, the sensor mounting pipe being arranged on the first support on two bases and the second support respectively and being arranged on the first support, displacement transducer is arranged on one end of sensor mounting pipe, in the middle of displacement transducer, rodmeter is set, one end of rodmeter is connected with copper pipe, the other end of rodmeter is connected with one end of extension bar, the other end of extension bar is connected with one end of control lever, the other end of control lever passes sensor mounting pipe and is connected with the second support, the control lever of sensor mounting pipe outside is set with protective jacket, the two ends of protective jacket are respectively arranged with band.
A kind of monitoring device of iced areas gate structure distortion, corresponding temperature sensor taken into account by steel plate main beam on the non-obstructing surface of gate, secondary crossbeam, dividing plate, panel and support arm being installed monitoring of structures distortion, the plate strain meter of monitoring iced areas gate structure distortion is fixedly connected with gate by two bases, gate is arranged a sealing thermal insulation casing, installation data collecting unit in sealing thermal insulation casing, data acquisition unit, plate strain meter are connected with the data processing display unit in Control Room and alarm unit respectively by cable with temperature sensor, the plate strain meter of described monitoring of structures distortion comprises two bases, the sensor mounting pipe being arranged on the first support on two bases and the second support respectively and being arranged on the first support, displacement transducer is arranged on one end of sensor mounting pipe, in the middle of displacement transducer, rodmeter is set, one end of rodmeter is connected with copper pipe, the other end of rodmeter is connected with one end of extension bar, the other end of extension bar is connected with one end of control lever, the other end of control lever passes sensor mounting pipe and is connected with the second support, the control lever of sensor mounting pipe outside is set with protective jacket, the two ends of protective jacket are respectively arranged with band.
The present invention also comprises some architectural features like this:
Institute's displacement sensors is LVDT displacement transducer.
Compared with prior art, the invention has the beneficial effects as follows: plate strain meter provided by the invention can solve well and utilize general measuring method cannot the difficult problem of Real-Time Monitoring iced areas gate structure distortion for a long time, the precision overcoming measuring method in multiple similar inventions before this compared with low, drift large, be not suitable for the defects such as long term monitoring.Plate strain meter provided by the present invention have structure simple, measure accurate, easy to use, cost is low, be applicable to the features such as long term monitoring, gate is installed this plate strain meter and is combined with temperature sensor can realize without temperature drift.
Accompanying drawing explanation
Fig. 1 is the front view of the plate strain meter of monitoring of structures of the present invention distortion;
Fig. 2 is the vertical view of the plate strain meter of monitoring of structures of the present invention distortion;
Fig. 3 is the side view of the plate strain meter of monitoring of structures of the present invention distortion;
Fig. 4 is the A-A partial sectional view of the plate strain meter of monitoring of structures of the present invention distortion;
Fig. 5 is the installation site schematic diagram of support arm upper steel plate meter;
Fig. 6 is the installation site schematic diagram of gate non-obstructing surface upper steel plate meter;
The composition schematic diagram of the monitoring device of Fig. 7 iced areas gate structure distortion of the present invention;
Fig. 8 is the process flow diagram of ice formation gate structure technology for deformation monitoring scheme.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
Case study on implementation one: composition graphs 1, Fig. 2, Fig. 3 and Fig. 4, the plate strain meter of a kind of monitoring of structures distortion provided by the invention, comprise two bases 21 and 26, the sensor mounting pipe 8 being arranged on the first support 13 on two bases 21 and the second support 22 respectively and being arranged on the first support 13, displacement transducer 2 is arranged on one end of sensor mounting pipe 8, in the middle of displacement transducer 2, rodmeter 7 is set, one end of rodmeter 7 is connected with copper pipe 1, the other end of rodmeter 7 is connected with one end of extension bar 9, the other end of extension bar 9 is connected with one end of control lever 12, the other end of control lever 12 passes sensor mounting pipe 8 and is connected with the second support 22, the control lever 12 of sensor mounting pipe 8 outside is set with protective jacket 18, the two ends of protective jacket 18 are respectively arranged with band 17 and 20, institute's displacement sensors 2 is LVDT displacement transducers.
First use in the mounting seat such as packing ring and nut 26 by the first support 13, the second support 22 adopts the mounting means identical with the first support to be arranged on base 21; Distance between first support 13 and the second support 22 pilot hole can be selected according to practical measurement requirement, can select in 50mm ~ 500mm scope.Secondly sensor mounting pipe 8 is connected with the first support 13 by bolt and nut pad combination 14,15,16; One end of control lever 12 is through protective jacket 18, linked together by extension bar 9 and rodmeter 7, control lever 12 and sensor arrange O type rubber seal 11 between installing 8, and the other end of control lever 12 is linked together by lining 23, bolt 24 and internal teeth serrated lock washer 25 and the second support 22; Connect with internal thread between extension bar 9 and control lever 12, and fix relative position with nut 10; The two ends of protective jacket are tightened with band 17,20 respectively, and arrange rubber tube 19 between band 20 and control lever 12, band can prevent external dust from sucking.The outer cover of displacement transducer 2 has clamp ring 3, by screw 4, packing ring 5, packing ring 6 fixed displacement sensor 2.After displacement transducer 2 installs, the left side of copper pipe 1 from displacement transducer 2 is inserted, and with rodmeter 7, to ensure the gap uniformity between rodmeter 7 and sensor outer housing.
LVDT displacement transducer 2 type selecting in the present invention is the form that sensor body is separated with amplifier, amplifier has gain-adjusted and zero point adjusting knob, the measurement range of LVDT sensor can be set flexibly by regulating two knobs, can realize selecting flexibly to measure structure length within the scope of 50mm ~ 500mm.
Case study on implementation two: composition graphs 5, Fig. 6 and Fig. 7, the non-obstructing surface of general iced areas gate comprises main beam 28, secondary crossbeam 29, back timber 30, dividing plate 31, panel 32 and limit case 33 form, support arm 26 is connected with frame by ball pivot 27, the monitoring device of a kind of iced areas gate structure distortion provided by the present invention, it is the main beam 28 on the non-obstructing surface of gate, secondary crossbeam 29, dividing plate 31, corresponding temperature sensor taken into account by steel plate panel 32 and support arm 26 being installed monitoring of structures distortion, the plate strain meter of monitoring iced areas gate structure distortion is fixedly connected with gate with 26 by two bases 21, gate is arranged a sealing thermal insulation casing, installation data collecting unit in sealing thermal insulation casing, data acquisition unit, plate strain meter is connected with the data processing display unit in Control Room and alarm unit respectively by cable with temperature sensor, the plate strain meter of described monitoring of structures distortion comprises two bases 21 and 26, the sensor mounting pipe 8 being arranged on the first support 13 on two bases 21 and the second support 22 respectively and being arranged on the first support 13, displacement transducer 2 is arranged on one end of sensor mounting pipe 8, in the middle of displacement transducer 2, rodmeter 7 is set, one end of rodmeter 7 is connected with copper pipe 1, the other end of rodmeter 7 is connected with one end of extension bar 9, the other end of extension bar 9 is connected with one end of control lever 12, the other end of control lever 12 passes sensor mounting pipe 8 and is connected with the second support 22, the control lever 12 of sensor mounting pipe 8 outside is set with protective jacket 18, the two ends of protective jacket 18 are respectively arranged with band 17 and 20.
The monitoring device of iced areas gate structure distortion of the present invention is specific works process is such:
First the positions such as the main beam on the non-obstructing surface of monitored gate, secondary crossbeam, dividing plate, panel and support arm installed by the plate strain meter be out of shape by monitoring of structures provided by the invention and corresponding temperature sensor, and installation site and quantity can obtain according to the deformation simulation analysis result of gate structure under Ice Load.Secondly data acquisition unit is arranged in the sealing thermal insulation casing that monitored gate is arranged, and data processing display unit and alarm unit are all arranged on are installed on navigation power key project Control Room, connect with cable between each unit.As shown in Figure 7: when gate DEFORMATION MONITORING SYSTEM uses, displacement signal is transferred to data acquisition unit by high frequency ac signal form, the displacement signal after process is transferred to process data processing display unit with RS-485 serial port form.The displacement signal of collection is carried out temperature compensation according to certain method by data processing display unit, to eliminate the impact of temperature drift; Then according to the gate structure distortion stored in database, relation between ice load and stress, the Stress Map of whole gate structure is obtained by linear difference, and early warning is carried out to gate severe stress state, thus achieve the monitoring of gate structure distortion, stress and ice load.
As shown in Figure 8: first according to version, material, the data such as dimensional parameters and mounting means of the gate that will monitor, set up gate structure finite element model; Secondly investigation Heilongjiang river ice load historical data information, by the Ice Load in various situation on gate finite element model, carry out gate structure warped digital simulation analysis, provide the selection scheme of gate structure distortion, numerical relationship model between stress and ice load and gate structure distortion monitoring points.Plate strain meter in the present invention is installed in tested floodgate structure according to the selection scheme of structural deformation monitoring point, concrete mount scheme following steps: first two pedestals are welded on gate steel construction, the distance between two pedestals is selected according to the requirement of simulation result; Secondly by the first support and the second support installing on two pedestals; Then sensor mounting pipe, control lever, extension bar, rodmeter, sensor are installed on support respectively; The gap uniformity between rodmeter and sensor inwall is ensured by calibration copper pipe.Finally by the relative position tightened between lock-screw fixed L VDT sensor and mounting pipe.
And the present invention is achieved in that first according to gate distortion, mathematical relation between stress and ice load to gate structure distortion and the long-term Real-Time Monitoring of stress, set up the relational database of the distortion of various Ice Load tail gates, stress; In gate structure deformation monitoring process, according to the gate structure deformation data that plate strain meter real-time monitors, draw and act on ice load status information on gate, and then obtain whole gate structure stress state information by data base querying, gate is about to occur that severe stress state carries out early warning, impels supvr to take corresponding measure to ensure the structural safety of gate.
Claims (3)
1. the plate strain meter of a monitoring of structures distortion, it is characterized in that: comprise two bases, the sensor mounting pipe being arranged on the first support on two bases and the second support respectively and being arranged on the first support, displacement transducer is arranged on one end of sensor mounting pipe, in the middle of displacement transducer, rodmeter is set, one end of rodmeter is connected with copper pipe, the other end of rodmeter is connected with one end of extension bar, the other end of extension bar is connected with one end of control lever, the other end of control lever passes sensor mounting pipe and is connected with the second support, the control lever of sensor mounting pipe outside is set with protective jacket, the two ends of protective jacket are respectively arranged with band.
2. the plate strain meter of a kind of monitoring of structures distortion according to claim 1, is characterized in that: institute's displacement sensors is LVDT displacement transducer.
3. the monitoring device of an iced areas gate structure distortion, it is characterized in that: the main beam on the non-obstructing surface of gate, secondary crossbeam, dividing plate, corresponding temperature sensor taken into account by steel plate panel and support arm being installed monitoring of structures distortion, the plate strain meter of monitoring iced areas gate structure distortion is fixedly connected with gate by two bases, gate is arranged a sealing thermal insulation casing, installation data collecting unit in sealing thermal insulation casing, data acquisition unit, plate strain meter is connected with the data processing display unit in Control Room and alarm unit respectively by cable with temperature sensor, the plate strain meter of described monitoring of structures distortion comprises two bases, the sensor mounting pipe being arranged on the first support on two bases and the second support respectively and being arranged on the first support, displacement transducer is arranged on one end of sensor mounting pipe, in the middle of displacement transducer, rodmeter is set, one end of rodmeter is connected with copper pipe, the other end of rodmeter is connected with one end of extension bar, the other end of extension bar is connected with one end of control lever, the other end of control lever passes sensor mounting pipe and is connected with the second support, the control lever of sensor mounting pipe outside is set with protective jacket, the two 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 |
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| 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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| CN104596471A true CN104596471A (en) | 2015-05-06 |
| CN104596471B CN104596471B (en) | 2018-04-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| Publication number | Publication date |
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| CN104596471B (en) | 2018-04-24 |
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