CN209230837U - A kind of arch bridge stiff skeleton external wrapping concrete ess-strain real-time monitoring system - Google Patents
A kind of arch bridge stiff skeleton external wrapping concrete ess-strain real-time monitoring system Download PDFInfo
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- CN209230837U CN209230837U CN201821160177.8U CN201821160177U CN209230837U CN 209230837 U CN209230837 U CN 209230837U CN 201821160177 U CN201821160177 U CN 201821160177U CN 209230837 U CN209230837 U CN 209230837U
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Abstract
The utility model discloses a kind of arch bridge stiff skeleton external wrapping concrete ess-strain real-time monitoring system, which includes that arch bridge stiff skeleton winds up pipe, foil gauge, foil gauge sliding rack, hollow out hard protection pipe, hollow hole, cable and concrete；This system reflects display and the variation of ess-strain of the monitoring and warning arch bridge stiff skeleton external wrapping concrete component after pouring molding in real time, not only solve the stress-strain measurement problem inside arch bridge stiff skeleton external wrapping concrete, when also solving concrete perfusion, the orientation problem of the flow effect strain gauge of concrete, and then accurately measure the stress and stress distribution of external wrapping concrete, save a large amount of human time's cost, without personnel's following of whole journey, and visualization and accuracy are high.
Description
Technical field
The phase that the utility model relates to apply the ess-strain of stiff skeleton external wrapping concrete to monitor in civil engineering arch bridge
Close technical field, and in particular to a kind of arch bridge stiff skeleton external wrapping concrete ess-strain real-time monitoring system.
Background technique
The maximum difficult point of concrete arch bridge construction is arch ring construction, and wherein stiff skeleton method can encircle big weight concrete
Erection be converted into light weight stiffness arch skeleton erection, greatly improve the span ability of concrete arch-type bridge, and reduce construction cost
With becoming the main flow direction of domestic and international large-span concrete arch bridge development.Concrete arch-type bridge stiff skeleton method, refers in arch ring
In (arch rib) forming process, first with no stent Methods construction stiff skeleton arching, arch is then poured using stiff skeleton as bracket
The external wrapping concrete for enclosing (arch rib), forms complete arch ring (arch rib).
Packet concrete casting side amount is big, and surface area is big, in addition, arch bridge is in work progress and Cheng Qiaohou, with stiff skeleton
Line style variation external wrapping concrete stress also changes, and the line style of external wrapping concrete is also changing, and the line style of external wrapping concrete
It should be consistent with skeleton line style.Arch rib sunshine, atmospheric temperature change etc. under such environmental effects the cross-section temperature field of arch rib also with
Variation.Non-uniform Temperature Distribution will make arch rib section generate temperature eigenstress, the equivalent uniform temperature field changed over time
Forces and temperature stress can be generated in indeterminate arch, lead to concrete cracking or destruction.Therefore the stiffness of arch bridge is measured
The Stress distribution of skeleton external wrapping concrete is highly desirable the pouring quality for guaranteeing external wrapping concrete.
Building Information Model (BIM) can be believed based on every relevant information data of engineering project by number
Real information possessed by analogue simulation structures is ceased, by three-dimensional building model, realizes the functions such as digital information management.It
Have the characteristics that information completeness, information relevance, consistency on messaging, visualization, harmony, simulation, optimization property.It can build
If being shared and being transmitted in the lifecycle process of project, make that engineers and technicians correctly to various architecture informations
Understand and efficiently copes with.
207019825 U of patent CN discloses the measuring system of CFST Arch Bridge pipe inner concrete stress distribution, mud
Slurry preparation is completed in Slurry confection agitator, and water and bentonite stirring are added according to the ratio, and importing circulating mud pond etc. is to be output,
Second blender, which is kept it turned on, guarantees that slurries are uniform.Steel pipe and the concrete being poured into steel pipe, the inner wall of steel pipe are equipped with
Multiple retaining rings are connected by connecting line between every two retaining ring, are equipped with stress sensing on connecting line and between two connecting lines
Device, and the axial direction of the strain gauge between two connecting lines is axial parallel with steel pipe.Use is also provided on the tube wall of steel pipe
In the through-hole for the signal wire for drawing strain gauge, the measuring instrument that strain gauge is set to outside the steel pipe with one is electrically connected.Steel
The peripheral region that the inner wall of pipe is located at through-hole is fixedly provided with a tubule, and the signal wire of strain gauge is pierced by through tubule from through-hole, and
It is electrically connected with measuring instrument.Spillage during filling concrete enters in steel pipe in order to prevent is additionally provided with packing material in through-hole.Its
In, the quantity of retaining ring is even number, and every two retaining ring is symmetrically installed on the inner wall of steel pipe in even number retaining ring, the quantity of retaining ring
Preferably four, wherein being symmetrically installed two-by-two on the inner wall of steel pipe, the both ends of each connecting line, which are connected to, to be symmetrically installed
Two retaining rings on.
Strain gauge is also connected with temperature sensor, and temperature sensor is fixed on connecting line, the letter of temperature sensor
Number line is also connect with measuring instrument, measure the strain of steel pipe inner concrete can simultaneously with temperature.Stress on each connecting line passes
Sensor be it is multiple, multiple strain gauges on each connecting line are uniformly arranged and are linked in sequence, the stress on each connecting line
Sensor is all connected with a measuring instrument.It is uniformly arranged multiple strain gauges on each connecting line, answering for steel pipe inner concrete can be made
Power distribution is accurately measured.Multiple strain gauges on each connecting line are fixed on connecting line using strapping, are used for
Measure the radial stress and contraction distortion of steel pipe inner concrete.
The CFST Arch Bridge pipe inner concrete stress-strain test scheme, is to be set up in steel duct to have pipe walls support
Position, can not be applied to directly embedment external wrapping concrete in；
The CFST Arch Bridge pipe inner concrete stress-strain test scheme, erection procedure is more complex, in Large Construction
Multiple spot is laid in structures relatively spends human and material resources cost；
The CFST Arch Bridge pipe inner concrete stress-strain test scheme, needs personnel's all-the-way tracking measurement count,
And it is readable not high, human error is big；
The wireless test transmission plan can only acquire display numerical value by data, and it is lower that man-machine interface interacts degree.
Utility model content
There is presently no the application measured to arch bridge stiff skeleton external wrapping concrete ess-strain, the utility model is mentioned
For a kind of arch bridge stiff skeleton external wrapping concrete ess-strain real-time monitoring system, reflection display in real time and monitoring and warning arch bridge strength
Property ess-strain of the skeleton external wrapping concrete component after pouring molding variation, it is mixed to not only solve arch bridge stiff skeleton outsourcing
Stress-strain measurement problem inside solidifying soil, when also solving concrete perfusion, the flow effect strain gauge of concrete
Orientation problem, and then accurately measure the stress and stress distribution of external wrapping concrete.Save a large amount of human time's cost, nothing
Personnel's following of whole journey is needed, and visualization and accuracy are high.
The technical solution adopted in the utility model is a kind of arch bridge stiff skeleton external wrapping concrete ess-strain real-time monitoring
System, the system include that arch bridge stiff skeleton winds up pipe 1, foil gauge 2, foil gauge sliding rack 3, hollow out hard protection pipe 4, hollow out
Hole 5, cable 6 and concrete seven；Foil gauge 2 is mounted on foil gauge sliding rack 3, foil gauge sliding rack 3 and hollow out hard protection pipe
To be slidably matched between 4, hollow out hard protection pipe 4 is bonded in arch bridge stiff skeleton by adhesive glue and winds up the outer surface of pipe 1；It engraves
The outside of empty hard protection pipe 4 is equipped with hollow hole 5；Foil gauge 2 is equipped with cable 6, cable 6 and external ess-strain reading instruments
Connection；Cable 6 is arranged among hollow out hard protection pipe 4；Concrete seven is filled in arch bridge stiff skeleton and winds up the outside of pipe 1.
The aperture of hollow hole 5 is less than the coarse aggregate size of concrete seven.
Hollow out hard protection pipe 4 is made of polyurethane rigid foam plastic.
Foil gauge 2 be arranged in arch bridge stiff skeleton wind up 1 end of pipe 200mm-800mm at.
The utility model improvement:
1) foil gauge is embedded in concrete by the utility model, directly displays arch bridge strength by ess-strain reading instruments
The ess-strain characteristic value of property skeleton external wrapping concrete corresponding site；
2) the utility model is equipped with foil gauge sliding rack, hollow out hard protection pipe, enable foil gauge sliding rack to exist
It is adjusted on vertical direction, monitoring position is flexible, and hollow out hard protection pipe being capable of effective protection foil gauge therein.
3) the ess-strain reading instruments of the utility model can record and store collected stress characteristics value
Computer end can be effective in computer end by establishing arch bridge stiff skeleton external wrapping concrete ess-strain monitoring and warning module
Monitor arch bridge stiff skeleton external wrapping concrete ess-strain situation；Application prospect is extensive.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model temperature acquisition,
Fig. 2 is the section structure diagram of the utility model.
Fig. 3 is the applicating flow chart of the utility model.
Fig. 4 is the application exemplary diagram of the utility model.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is described in further detail explanation to the utility model.
As shown in Figs. 1-2, a kind of arch bridge stiff skeleton external wrapping concrete ess-strain real-time monitoring system, the system include
Arch bridge stiff skeleton winds up pipe 1, foil gauge 2, foil gauge sliding rack 3, hollow out hard protection pipe 4, hollow hole 5, cable 6 and coagulation
Soil 7；Foil gauge 2 is mounted on foil gauge sliding rack 3, is matched between foil gauge sliding rack 3 and hollow out hard protection pipe 4 for sliding
It closes, hollow out hard protection pipe 4 is bonded in arch bridge stiff skeleton by adhesive glue and winds up the outer surface of pipe 1；Hollow out hard protection pipe 4
Outside be equipped with hollow hole 5；Foil gauge 2 is equipped with cable 6, and cable 6 is connect with external ess-strain reading instruments；Cable 6 is set
It sets among hollow out hard protection pipe 4；Concrete seven is filled in arch bridge stiff skeleton and winds up the outside of pipe 1.
The aperture of hollow hole 5 is less than the coarse aggregate size of concrete seven.
Hollow out hard protection pipe 4 is made of polyurethane rigid foam plastic.
Foil gauge 2 be arranged in arch bridge stiff skeleton wind up 1 end of pipe 200mm-800mm at.
As shown in Figure 3-4, the utility model includes stress-strain test device, data collecting instrument and leads to detection device
Believe the user terminal of connection；
In 10 casting process of external wrapping concrete, the section that main arch ring stress is easy to happen mutation is left arch springing, 1/8 arch, 1/
4 arches, 3/8 arch, vault, 5/8 arch, 3/4 arch, 7/8 arch and right arch springing section, totally 9 sections.Therefore, in the outsourcing to be poured
Along arch ring corresponding position, arrangement vertically and horizontally carries Steel bar rack in concrete 10, and stress-strain test device is that string wire strain gauge is answered
Stress-strain sensor arrangement is connected to acquisition reading instruments on carrying bracket, through cable；User terminal is computer platform
Terminal, test transmission acquisition device are connected to user terminal by data collecting instrument acquisition system etc.；The strain testing portion
Point include data collecting card, the data input pin being connect with each foil gauge or stress meter data output end, data collecting card or adopts
Collect instrument data input pin and connects computer.After signal and work that data collecting instrument part collects foil gauge or stress meter
Continuous processing.After the stress signal that foil gauge or stress meter measure is received by analog to digital conversion circuit by data collecting instrument, warp
It crosses data collecting card and is sent into computer system, analyzed；
The application method of the utility model is as follows: by specification in the arch bridge with Stiffness frame external wrapping concrete that will be poured shortly
Arrange the location point of test stress strain, the position of test stress strain point should select to change place greatly in ess-strain.
Steel bar rack is carried out in the position of arrangement test stress strain, by strain gauge binding on Steel bar rack and stiffness bone
On frame, and adding to do and stop the steel reinforcement cage of coarse aggregate as protection, cable is connected to be extended out along the direction of reinforcing bar and skeleton,
Being connected to data collecting instrument, then data collecting instrument is connected to user terminal, on identical position 2-3 strain gauge of arrangement with
Guarantee that test data is accurate；
The utility model can be docked with BIM system, carried out secondary development using BIM and established outside arch bridge with Stiffness frame
The model of packet concrete establishes arch bridge with Stiffness frame external wrapping concrete shrinkage calculation module and CFST Arch Bridge pipe
Inner concrete ess-strain monitoring and warning module, and established in the position for wherein indicating stress-strain test, and with user terminal
Connection, enables the numerical value of ess-strain corresponding position in BIM model to show；
Arch bridge with Stiffness frame external wrapping concrete match ratio, construction condition etc. are inputted into computer BIM model stiff skeleton
Its ess-strain threshold value of warning is calculated in arch bridge external wrapping concrete stress deformation and line style variation computing module, formulates stress
Strain monitoring scheme；
The test point of arch bridge with Stiffness frame external wrapping concrete mark is laid stress-strain test device and is answered stress at the scene
Become and carry out real-time monitoring, collected ess-strain information is transferred to user terminal by data collecting instrument, and be shown in BIM
In the model of foundation.
1, the utility model is saved compared to traditional arch bridge with Stiffness frame external wrapping concrete stress-strain test mode
Live a large amount of manpower and the expenditure of time expend；
2, the utility model is improved compared to traditional arch bridge with Stiffness frame external wrapping concrete stress-strain test mode
The accuracy and reliability of arch bridge with Stiffness frame external wrapping concrete test stress strain；
3, the utility model can compared to traditional arch bridge with Stiffness frame external wrapping concrete stress-strain test mode
The ess-strain of real-time display arch bridge with Stiffness frame external wrapping concrete specific location and clear to people's simple interface；
4. the utility model is used compared to traditional arch bridge with Stiffness frame external wrapping concrete stress-strain test mode
Real-time display platform forms ess-strain real-time display system；
5. the utility model passes through compared to traditional arch bridge with Stiffness frame external wrapping concrete stress-strain test mode
BIM secondary development is integrated with the real-time interface of monitoring and warning system in BIM model；
6. the utility model passes through compared to traditional arch bridge with Stiffness frame external wrapping concrete stress-strain test mode
BIM secondary development, establishes arch bridge with Stiffness frame external wrapping concrete stress deformation in BIM model and line style variation calculates mould
Block.
Claims (1)
1. a kind of arch bridge stiff skeleton external wrapping concrete ess-strain real-time monitoring system, it is characterised in that: the system includes arch
Bridge stiff skeleton winds up pipe (1), foil gauge (2), foil gauge sliding rack (3), hollow out hard protection pipe (4), hollow hole (5), line
Cable (6) and concrete (7)；Foil gauge (2) is mounted on foil gauge sliding rack (3), and foil gauge sliding rack (3) and hollow out hard are protected
To be slidably matched between pillar (4), hollow out hard protection pipe (4) is bonded in arch bridge stiff skeleton by adhesive glue and winds up pipe (1)
Outer surface；The outside of hollow out hard protection pipe (4) is equipped with hollow hole (5)；Foil gauge (2) be equipped with cable (6), cable (6) with
External ess-strain reading instruments connection；Cable (6) setting is intermediate in hollow out hard protection pipe (4)；Concrete (7) is filled in
Arch bridge stiff skeleton winds up the outside of pipe (1)；
The aperture of hollow hole (5) is less than the coarse aggregate size of concrete (7)；
Hollow out hard protection pipe (4) is made of polyurethane rigid foam plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821160177.8U CN209230837U (en) | 2018-07-21 | 2018-07-21 | A kind of arch bridge stiff skeleton external wrapping concrete ess-strain real-time monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821160177.8U CN209230837U (en) | 2018-07-21 | 2018-07-21 | A kind of arch bridge stiff skeleton external wrapping concrete ess-strain real-time monitoring system |
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| CN209230837U true CN209230837U (en) | 2019-08-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678474A (en) * | 2020-06-04 | 2020-09-18 | 赵德才 | Arch bridge owner encircles continuous displacement monitoring devices |
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2018
- 2018-07-21 CN CN201821160177.8U patent/CN209230837U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678474A (en) * | 2020-06-04 | 2020-09-18 | 赵德才 | Arch bridge owner encircles continuous displacement monitoring devices |
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