CN201130082Y - Wide span bridge deflection monitoring device - Google Patents
Wide span bridge deflection monitoring device Download PDFInfo
- Publication number
- CN201130082Y CN201130082Y CNU200720300418XU CN200720300418U CN201130082Y CN 201130082 Y CN201130082 Y CN 201130082Y CN U200720300418X U CNU200720300418X U CN U200720300418XU CN 200720300418 U CN200720300418 U CN 200720300418U CN 201130082 Y CN201130082 Y CN 201130082Y
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- pressure
- bridge
- water tank
- monitoring device
- deflection monitoring
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Abstract
The utility model provides a large span bridge deflection monitoring device, wherein water pipe water pressure value which is caused by the variation of the vertical displacement of girder bodies on each monitoring point is conversed into electric analog signals to be adopted through arranging a pressure transmitter on bridge deflection monitoring arrangement points, pressure intensity signals which are conversed and formed are output to an industrial control computer through a 485 signal transmission line after being conversed by an A/D, and then the pressure intensity signals are calculated according to the linear mathematical relationship between pressure intensity and altitude, which are stored into a data base of the industrial control computer through combining the marshalling circumstance of pressure transmitter arrangement of a whole bridge, real-time deflection measurement of the key points of the whole bridge is achieved, thereby achieving long-term health monitoring of the deflection of large span bridges.
Description
Technical field
The utility model relates to a kind of bridge deflection monitoring device that is used for science of bridge building, especially be applicable to the long-term monitoring in real time of amount of deflection of continuous bridge, continuous rigid frame bridge, cable-stayed bridge and the suspension bridge of large span, belong to the science of bridge building building field, specifically relate to a kind of real-time monitoring device that is applicable to Longspan Bridge engineering amount of deflection.
Background technology
In the prior art, deflection metrology in the science of bridge building structure, total powerstation, catoptron method or spirit-leveling instrument are generally adopted in the monitoring of bridge vertical displacement, these methods can't realize the Continuous Observation of deflection of bridge span, also can't realize the robotization processing of deflection of bridge span, can only be as a kind of means of bridge periodic monitoring, and exist in and increase the defective that error produces in the artificial participation link.Less for its amount of deflection of medium and small span bridge, general unattended duty bridge deflection monitoring adopts level gauging to realize, the method of level gauging has a lot, as direct-reading method, buoyancy method, static pressure method, capacitance method, radioisotope method, supercritical ultrasonics technology, microwave method and laser method etc.But bigger because of amount of deflection for Longspan Bridge, the deflection monitoring of unmanned bridge long-term health monitoring is a difficult point always, implements also relatively difficulty.
Summary of the invention
The utility model provides a kind of Longspan Bridge deflection monitoring device, by on the bridge deflection monitoring layout points, pressure unit being set, each place, monitoring point beam body generation vertical displacement is changed the water pipe water pressure value that causes change into electric analoging signal gathered, after the A/D conversion, will change the pressure signal that forms and transfer to industrial control computer by 485 signal transmission lines, calculate according to the linear mathematical relation of pressure and elevation again, the marshalling situation of arranging in conjunction with the pressure unit of full-bridge deposits in the database of industrial control computer, realize the real-time deflection metrology of the key point of full-bridge, and then realize the monitoring of long-span bridge beam deflection long-term health.
The technical solution of the utility model is achieved in that
The bridge deflection monitoring device mainly is made up of water tank a, water pipe b, pressure unit c, 485 transmission line d, A/D transition card e and industrial control computer f.Whole device is divided into water route, circuit and three parts of computing machine, and wherein the water route part mainly is made of water tank a, water pipe b, pressure unit c; Circuit part is made up of A/D card e and 485 transmission line d and some accessory switch circuit; Computing machine part is made up of industrial control computer f and corresponding calculated program and database.At first water tank a is installed on the bridge, the principle that water tank a mounting points is determined is the height that water tank a setting height(from bottom) will be higher than any monitoring layout points pressure unit c, to guarantee that the liquid among the water tank a flows into and water tank a bottom water pipe connecting b and the distributive pipe that is connected with pressure unit c, and the corresponding pipe of generation is pressed, water pipe b and distributive pipe constitute the water route, and a datum pressure transmitter is set in the bottom of water tank a; Liquid employing among the water tank a is antifreeze, listerine has guaranteed that whole device can steady in a long-termly use.The range of pressure unit c is regulated according to actual needs, and precision and range are determined according to the size of the distortion of each bridge; Pressure unit c is installed on the deflection monitoring layout points place that determines according to the optimum mode of FEM (finite element) calculation respectively, and pass through erection support, be bolted on the base plate or ribbed stiffener of bridge, to prevent that pressure unit c from moving, sliding and beating on bridge, dust stratification and artificial damage in order to prevent pressure unit c simultaneously, the specialized apparatus cover is set on pressure unit c, and pressure unit c is connected by distributive pipe with water pipe b; 485 transmission line d adopt Shielded Twisted Pair, guarantee that circuit can transmit enough distances and unattenuated, distortion; For phenomenons such as the signal attenuation that reduces to produce, distortions owing to the circuit transmission range is long, in the line between position signalization repeater, the quantity of repeater is provided with according to the attenuation degree of signal; Because liquid levels among the water tank a and pressure unit c are not in one plane, the distributive pipe at pressure unit c place has certain pressure, pressure unit c is converted to the hydraulic pressure of its corresponding deflection monitoring layout points the current signal of 4～20mA, reach A/D transition card e by 485 transmission line d and carry out mould/number conversion, data-signal after the conversion is as pressure signal, reach among the industrial control computer f linear mathematical relation by 485 transmission lines again and calculate, organize into groups storage, so that to handling the demonstration and the inquiry of back data according to pressure and elevation.Equally, the datum pressure transmitter that is arranged on water tank a bottom is converted to the hydraulic pressure of water tank a bottom the current signal of 4～20mA, also reach A/D transition card e and carry out mould/number conversion by 485 transmission line d, data-signal after the conversion is as the base pressure signal, reaches among the industrial control computer f by 485 transmission lines to be used for as reference value that contrast is calculated and storage again.Under temperature variation or load action during bridge beam body generation amount of deflection, Bridge Beam is known from experience the generation vertical displacement and is changed, pressure unit c is along with the vertical displacement of bridge beam body changes simultaneously, and the liquid level among the water tank a remains unchanged substantially, pressure unit c gets off the pressure record of its corresponding deflection monitoring layout points, calculate its corresponding deflection monitoring layout points bridge floor absolute altitude by the linear relationship of pressure and water colunm height, record data by a period of time, can obtain the deflection of bridge span delta data of corresponding period, realization long-span bridge beam deflection is monitored in real time.
Advantage of the present utility model:
1, the accuracy and the real-time that have height have realized the continuous deflection monitoring of bridge, provide objective reliable data to the trend analysis of bridge;
2, be convenient to make and install;
3, have the reliability of height, can report to the police in advance to the circuit and the instrument that go wrong, convenient for maintaining provides warning function to bridge security;
4, according to design, the construction requirement of different bridges, in conjunction with requirements such as pressure unit range and precision size, serviceable lifes, but the pressure unit of choose reasonable different accuracy and range is measured.
Description of drawings
Fig. 1 is each ingredient connection diagram of the utility model bridge deflection monitoring device.
Fig. 2 is the pressure unit scheme of installation of the utility model novel bridge deflection monitoring device.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is further specified, this embodiment is a main span 1280m steel case beam suspension bridge.Bridge deformation size and bridge deformation form according to designing requirement among this embodiment, optimum mode according to FEM (finite element) calculation is determined, pressure unit c of the present utility model adopts EJA110A among this embodiment, and full-bridge is arranged 21 sections altogether, totally 32 pressure unit c; Water main adopts the PPR250 hot-water line, and distributive pipe adopts the PPR200 hot-water line; Water tank a adopts the manufacturing of 3mm stainless steel, and water tank a highly is 1.2m, and water tank a is arranged on apart from 1.0m place, bridge floor deflection monitoring layout points peak top; The solution of water tank a adopts 10% anti freezing solution, and water tank a liquid level adopts whiteruss to prevent moisture evaporation.
Fig. 1 is each ingredient connection diagram of the utility model bridge deflection monitoring device, and Fig. 2 is the pressure unit scheme of installation of the utility model novel bridge deflection monitoring device.Pressure unit c adopts L shaped angle steel by being bolted on the bridge ribbed stiffener, install for convenient, adopt flexible pipe that water route and pressure unit c are coupled together, water tank a is fixed on the bridge tower by support, water tank a support adopts the Q235B-F shaped steel of ∠ 40 * 5mm, and support adopts welding manner to connect, and can bear the enough weight of water tank a and the displacement of 1mm does not take place to surpass, welding is adopted with support in water tank a bottom, guarantees the stability of water tank a; As the anti freezing solution of the liquid medium employing 10% of transmitting pressure, guarantee that this liquid medium can not freeze under-15 ℃ condition, and water pipe is not produced corrosion yet among the water tank a; Every 100m main valve is set along water pipe, a valve is set, so that the convenience of maintenance in each pressure unit c position; According to the load situation of bridge, be provided with one along bridge every 58m section is installed, adopt quincuncial arrangement, assurance can be measured the side of bridge and be turned round and vertical deflection, and certain fault-tolerance is arranged; The sample frequency of A/D transition card d is greater than 10HZ, and per 4～5 pressure unit c adopt an A/D transition card d, and with A/D transition card d establishment in groups, industrial control computer f calculates conversion with the current value that obtains according to following formula:
h
1--the calculating elevation of----pressure unit c
h
0--the benchmark elevation of----pressure unit c
X--the current value of----A/D transition card d
N, the maximum range of m----pressure unit c, minimum range
Industrial control computer f was according to per 5 seconds record one secondary data and write database.
Although water tank a is provided with the whiteruss of volatilization prevention, liquid medium still can reduce within a certain period of time, therefore be provided with a datum pressure transmitter in water tank a bottom, according to the value of the pressure unit c of each section with the variation of the difference of the value of the datum pressure transmitter of period, can obtain the distortion size of corresponding deflection monitoring layout points bridge, by industrial control computer f the finishing analysis of data database data is in time obtained the trend analysis of bridge then, observe the amount of deflection situation of change of bridge under the long-term work state.
If abnormal conditions appear in certain pressure unit c or certain group circuit, the history value comparative analysis by the database to industrial control computer f provides can provide warning, has made things convenient for inspection and maintenance; The deflection of bridge span that bridge is under the overload condition for a long time also can provide warning function, makes things convenient for the bridge management.
Claims (5)
1, a kind of Longspan Bridge deflection monitoring device, mainly by water tank (a), water pipe (b), pressure unit (c), 485 transmission lines (d), A/D transition card (e) and industrial control computer (f) are formed, it is characterized in that: water tank (a) bottom is connected with water pipe (b) and a datum pressure transmitter is set, corresponding each the deflection monitoring layout points of water pipe (b) is connected to distributive pipe, each distributive pipe is connected to corresponding pressure unit (c), the electric analoging signal output terminal of each pressure unit (c) and datum pressure transmitter is by 485 transmission lines (d), the current signal that produces separately is input to A/D transition card (e), after mould/number conversion, input to industrial control computer (f) as pressure signal and base pressure signal by 485 transmission lines, calculate through the linear mathematical relation of pressure and elevation by industrial control computer (f), and corresponding each pressure unit (c) deposits in the database the real-time deflection monitoring of the key point of realization full-bridge in through marshalling.
2, Longspan Bridge deflection monitoring device according to claim 1, it is characterized in that: water tank (a) setting height(from bottom) will be higher than the height of any monitoring layout points pressure unit (c), with flow of liquid oral siphon (b) and the distributive pipe in the assurance water tank (a), and produce corresponding pipe pressure.
3, Longspan Bridge deflection monitoring device according to claim 1 is characterized in that: the liquid in the water tank (a) adopts antifreeze, listerine, and adopts whiteruss to prevent moisture evaporation.
4, Longspan Bridge deflection monitoring device according to claim 1 is characterized in that: water pipe (b) and distributive pipe are has thermotolerance and corrosion resistant characteristic.
5, Longspan Bridge deflection monitoring device according to claim 1 is characterized in that: 485 transmission lines (d) adopt Shielded Twisted Pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720300418XU CN201130082Y (en) | 2007-12-26 | 2007-12-26 | Wide span bridge deflection monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720300418XU CN201130082Y (en) | 2007-12-26 | 2007-12-26 | Wide span bridge deflection monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201130082Y true CN201130082Y (en) | 2008-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720300418XU Expired - Lifetime CN201130082Y (en) | 2007-12-26 | 2007-12-26 | Wide span bridge deflection monitoring device |
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| CN (1) | CN201130082Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344396A (en) * | 2013-07-16 | 2013-10-09 | 吉林大学 | System and method for measuring bridge deflection based on close-range photographic measurement |
| CN104215413A (en) * | 2014-09-30 | 2014-12-17 | 福州大学 | Long-term monitoring method applicable to deflection deformation of beam of historic building |
| CN107192520A (en) * | 2017-07-13 | 2017-09-22 | 重庆三峡学院 | A kind of deflection of bridge span detection means |
| CN109186531A (en) * | 2018-09-26 | 2019-01-11 | 招商局重工(深圳)有限公司 | A kind of concentration water tank type deflection metrology system |
| CN110319808A (en) * | 2019-06-10 | 2019-10-11 | 华南理工大学 | Obliquity sensor measures long-span arch bridge change of arch costal shape accuracy prediction and appraisal procedure |
| CN114646438A (en) * | 2022-04-01 | 2022-06-21 | 中交三航局第三工程有限公司 | Steel box girder walking pushing deflection monitoring method based on zero displacement datum point |
-
2007
- 2007-12-26 CN CNU200720300418XU patent/CN201130082Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344396A (en) * | 2013-07-16 | 2013-10-09 | 吉林大学 | System and method for measuring bridge deflection based on close-range photographic measurement |
| CN103344396B (en) * | 2013-07-16 | 2016-01-20 | 吉林大学 | Based on the bridge deflection measurement system and method for close-range photogrammetry |
| CN104215413A (en) * | 2014-09-30 | 2014-12-17 | 福州大学 | Long-term monitoring method applicable to deflection deformation of beam of historic building |
| CN104215413B (en) * | 2014-09-30 | 2017-05-10 | 福州大学 | Long-term monitoring method applicable to deflection deformation of beam of historic building |
| CN107192520A (en) * | 2017-07-13 | 2017-09-22 | 重庆三峡学院 | A kind of deflection of bridge span detection means |
| CN107192520B (en) * | 2017-07-13 | 2018-12-11 | 重庆三峡学院 | A kind of deflection of bridge span detection device |
| CN109186531A (en) * | 2018-09-26 | 2019-01-11 | 招商局重工(深圳)有限公司 | A kind of concentration water tank type deflection metrology system |
| CN110319808A (en) * | 2019-06-10 | 2019-10-11 | 华南理工大学 | Obliquity sensor measures long-span arch bridge change of arch costal shape accuracy prediction and appraisal procedure |
| CN114646438A (en) * | 2022-04-01 | 2022-06-21 | 中交三航局第三工程有限公司 | Steel box girder walking pushing deflection monitoring method based on zero displacement datum point |
| CN114646438B (en) * | 2022-04-01 | 2023-08-15 | 中交三航局第三工程有限公司 | Deflection monitoring method for walking pushing of steel box girder based on zero displacement datum point |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GROUP CO., LTD., ZHONGTIE DAQIAO BUREAU Free format text: FORMER OWNER: CHINA ZHONGTIE MAJOR BRIDGE ENGINEERING CO., LTD. Effective date: 20150227 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150227 Address after: 103 No. 430034 Hubei province Wuhan City Qiaokou District Road building bridge Patentee after: China Zhongtie Major Bridge Engineering Group Co., Ltd. Patentee after: Group Co., Ltd., Zhongtie Daqiao Bureau Address before: 103 No. 430034 Hubei Province in Qiaokou District of Wuhan city road construction Patentee before: China Zhongtie Major Bridge Engineering Group Co., Ltd. Patentee before: China Zhongtie Major Bridge Engineering Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: No. 103 430000 Qiaokou District in Hubei province Wuhan city road construction Patentee after: BRIDGE SCIENCE AND TECHNOLOGY INSTITUTE CO., LTD., CHINA RAILWAY ENGINEERING GROUP Patentee after: Group Co., Ltd., Zhongtie Daqiao Bureau Address before: 103 No. 430034 Hubei province Wuhan City Qiaokou District Road building bridge Patentee before: China Zhongtie Major Bridge Engineering Group Co., Ltd. Patentee before: Group Co., Ltd., Zhongtie Daqiao Bureau |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081008 |