CN110263359A - A kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method and device - Google Patents
A kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method and device Download PDFInfo
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Abstract
The invention discloses a kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method and devices.This method is for dynamic characteristics of the submerged floating tunnel tube body under vehicle-fluid matasomatism of analyzing and researching.Specific step includes: that overall structure is divided into physics minor structure and numerical value minor structure；Based on finite element algorithm or related software, logarithm minor structure establishes numerical simulation model；Physics minor structure is subjected to prefabricated processing and installation according to prototype or scaled model；By control system, data interaction system and data collection system, complete to control the load of physics minor structure by the calculating information of numerical value minor structure, and the model modification of the metrical information logarithm minor structure by physics minor structure；Eventually by visualization interface monitoring, extract information needed.The present invention solves the problems, such as that cardinar number value-based algorithm is difficult to simulate dynamic characteristics of the submerged floating tunnel under complicated loads, also reduces the requirement such as cost and place equipment of experimental technique.
Description
Technical field
The present invention relates to civil engineering structure emulation and experimental technique fields, and in particular to a kind of submerged floating tunnel tube performance
Hybrid analog-digital simulation test method and device.
Background technique
Submerged floating tunnel is as in recent years and the research emphasis of future transportation engineering, with the continuous deepening of research, increasingly
More factors is in view of in the response analysis of structure.Important component of the tunnel tube body as submerged floating tunnel system, is being runed
Not only for a long time by fluid matasomatism under state, tube body is also influenced by vehicular load, and tube body vibration can excite the ginseng of anchor cable
Number vibration.Accordingly, it is considered to which the tube body system performance research under fluid and vehicle effect is very necessary.
Since cardinar number value-based algorithm is difficult to simulate complicated submerged floating tunnel structure problem, traditional experiment technology because place limits,
The factors such as maintenance cost is high are difficult to carry out, and therefore, the hybrid analog-digital simulation experimental technique based on Substructure Techniques proposed can
Effectively avoid the above problem, capturing structure dynamic property.
Summary of the invention
It is a primary object of the present invention to provide a kind of submerged floating tunnel tube performance in place of overcome the deficiencies in the prior art
Hybrid analog-digital simulation test method and device solve cardinar number value-based algorithm and are difficult to simulate power of the submerged floating tunnel under complicated loads
Characteristic issues also reduce the requirement such as cost and place equipment of test.
To achieve the above object, the invention adopts the following technical scheme: a kind of submerged floating tunnel tube performance hybrid analog-digital simulation is surveyed
Method for testing and device, for dynamic characteristics of the submerged floating tunnel tube body under vehicle-fluid matasomatism of analyzing and researching.It is characterized in that should
Method comprises the concrete steps that:
(a) overall structure is divided into physics minor structure and numerical value minor structure；
(b) it is based on finite element algorithm or related software, logarithm minor structure establishes numerical simulation model；
(c) physics minor structure is subjected to prefabricated processing and installation；
(d) by control system, data interaction system and data collection system, the calculating information by numerical value minor structure is completed
Load control to physics minor structure, and the model modification of the metrical information logarithm minor structure by physics minor structure；
(e) pass through visualization interface monitoring, extraction information needed.
A kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method as described above and device, wherein by submerged floating tunnel
Tube body and anchor cable carry out analogue simulation using vehicle and fluid environment as numerical value minor structure as physics minor structure.
A kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method as described above and device, wherein establish numerical value
The specific method is as follows for structural model:
(i) according to the essential information of structure, the numerical value minor structure based on all kinds of finite element theories or finite element software is established
Model；
(ii) integration method and integration step are chosen, the equation of motion of structure is solved.
Submerged floating tunnel tube performance hybrid analog-digital simulation test method as described above and device, wherein processing physics minor structure
The specific method is as follows:
According to physics sub-structure model scale and complexity, by physics minor structure with prototype or scaled model into
The processing of row prefabrication and installation.
A kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method as described above and device, wherein control is to physics
The specific method is as follows for minor structure load:
(i) completed in control system displacement prediction of the logarithm sub-structure model in each numerical integration step-length,
Prediction of speed, acceleration prediction and internal force solve, and are modified using control algolithm；
(ii) by data interaction system and control system, after the amendment of reading numerical values minor structure and physics minor structure junction
Calculating is displaced or calculates force value and as displacement of targets or target force, is loaded into physics knot by loading system and device
In the corresponding freedom degree of structure.
Further, the specific method is as follows for update numerical value sub-structure model:
Feedback quantity after displacement sensor and force snesor measure physics minor structure actual loaded, by data collection system
Pass to numerical value sub-structure model again with data interaction system, the calculation basis as next integration step.
Submerged floating tunnel tube performance hybrid analog-digital simulation test method as described above and device, wherein extract information needed
The specific method is as follows:
(i) communication interface with controller is established on main control computer, regulates and controls initial each parameter in communication interface；
(ii) it is checked a little needed for being inputted on main control computer, via memory, directly reads the dynamic response.
Further, the numerical value sub-structure model of establishing uses variable store to store the variable under each integration step
Parameter is completed information transmitting and is updated.
Further, the specific method that control loads physics minor structure is:
If (i) physics minor structure is prototype, directly displacement of targets or target force are added using loading system and device
It is downloaded in physics minor structure, loading device can be divided into actuator, shake table, actuator-shake table coupling dress according to the actual situation
It sets；
(ii) if physics minor structure is scaled model, reduced scale mould is converted according to condition of similarity by displacement of targets or target force
The displacement or power of physics minor structure, are loaded into physics minor structure by loading system and device under type.
Further, the specific method for updating numerical value sub-structure model is:
If (i) physics minor structure is prototype, the displacement or power of extracts physical sub-structure model are directly fed back to count
It is worth in minor structure；
(ii) if physics minor structure is scaled model, the displacement or power of extracts physical sub-structure model, according to similar item
Part is converted into the displacement or power of numerical value minor structure under prototype, feeds back into numerical value minor structure.
Compared with prior art, the beneficial effects of the present invention are embodied in:
1. the present invention uses the bulk testing method based on Substructure Techniques, effectively prevents cardinar number value-based algorithm and complexity is tied
The modeling of structure object is difficult, calculates the problems such as pressure is big, and saves experimentation cost.
It is calculated 2. numerical simulation part of the present invention can be limited using a certain algorithm or software, for large scale structure
Object can be used and be capable of the algorithm of parallel computation and carry out acceleration operation, effectively improves computational efficiency.
To sum up, proposition of the invention, is further research submerged floating tunnel tube body in more load actions such as vehicle, fluid
Under structural response provide a strong means.
Detailed description of the invention
Fig. 1 is the overall flow schematic diagram of the embodiment of the present invention.
Fig. 2 is the submerged floating tunnel tube body of the embodiment of the present invention in more load action schematic diagrames such as vehicle, fluid.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is explicitly described, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
The present invention provides a kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method and device, and overall flow schematic diagram is such as
Shown in Fig. 1, mainly include the following steps: that overall structure is divided into physics minor structure and numerical value minor structure by (a)；(b) it is based on having
Limit Meta algorithm or related software, logarithm minor structure establish numerical simulation model；(c) by physics minor structure according to prototype or
Scaled model carries out prefabricated processing and installation；(d) according to stress condition, numerical model solution is carried out, numerical value minor structure is solved
With the calculating information of the boundary point of physics minor structure junction；(e) by control system and data interaction system, numerical value is tied
After the calculating Information revision of structure, the load of physics minor structure is controlled；(f) pass through data interaction system and data collection system,
The physics minor structure metrical information acquired after load is fed back into numerical value minor structure, the model of next time step is completed more
Newly；(g) pass through visualization interface monitoring, extraction information needed.As shown in Fig. 2, will carefully describe whole flow process below.
The first step, using submerged floating tunnel tube body and anchor cable as physics minor structure, using vehicle and fluid environment as numerical value
Structure；
Main control computer is connect by second step with controller, carries out the modeling of numerical value minor structure.Vehicle in the present embodiment
For train model.Train in tunnel tube body is separated into series of points, one group of spring resistance will be simplified between wheel shaft and car body
Buddhist nun's element, the power that vehicle acts on tunnel reach car body by the spring damping element between wheel shaft and car body.Fluid matasomatism is used
By Morison equation simulation；
Third step is completed pre- to displacement of the vehicle-fluid model in each numerical integration step-length in the controls
Survey, prediction of speed, acceleration are predicted and make every effort to solve, and carry out displacement correction using feed-forward and feedback comprehensive controling algorithm；
4th step by original model parameter and is calculated power and displacement storage, is deposited using variable store in the controls
The variable parameter under each integration step is stored up, information transmitting is completed and is updated；
One group of wheel shaft is replaced with actuator, is mounted on tunnel tube body corresponding position, fluid matasomatism is by one group by the 5th step
Actuator simplification acts on tube wall, by revised calculating displacement xVehicle i+1And xFluid i+1It is loaded respectively as displacement of targets
Onto the intracorporal driving road surface of tunnel tube body and tunneltron；
6th step reads the force sensor data F being mounted in tunnel tube body and tunneltron body on driving road surfaceTube body i+1,
FRoad surface i+1, it is fed back to auto model and fluid model, respectively to carry out the update of next time step；
7th step establishes the communication interface with controller on main control computer, regulates and controls initial each parameter in communication interface；
8th step checks a little needed for inputting on main control computer, via memory, directly reads the dynamic response.
The attached drawing of this specification is schematic diagram, aids in illustrating design of the invention, it is schematically indicated the shape of each section
And its correlation.Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the present invention not office
It is limited to above-mentioned specific embodiment, the above mentioned embodiment is only schematical, is not restrictive, this field
Those of ordinary skill under the inspiration of the present invention, do not departing from present inventive concept and scope of the claimed protection situation
Under, various modifications and deformation can also be made, within these are all belonged to the scope of protection of the present invention.
Claims (10)
1. a kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method and device, for submerged floating tunnel tube body of analyzing and researching in vehicle
- fluid matasomatism under dynamic characteristics.It is characterized in that this method comprises the concrete steps that:
(a) overall structure is divided into physics minor structure and numerical value minor structure；
(b) it is based on finite element algorithm or related software, logarithm minor structure establishes numerical simulation model；
(c) physics minor structure is subjected to prefabricated processing and installation；
(d) it by control system, data interaction system and data collection system, completes by the calculating information of numerical value minor structure to object
Manage the load control of minor structure, and the model modification of the metrical information logarithm minor structure by physics minor structure；
(e) pass through visualization interface monitoring, extraction information needed.
2. a kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method according to claim 1 and device, feature exist
Physics minor structure and numerical value minor structure are divided in step (a) method particularly includes: using submerged floating tunnel tube body and anchor cable as physics
Minor structure carries out analogue simulation using vehicle and fluid environment as numerical value minor structure.
3. a kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method according to claim 1 and device, feature exist
Establishing numerical value sub-structure model in step (b), the specific method is as follows:
(i) according to the essential information of structure, the numerical value sub-structure model based on all kinds of finite element theories or finite element software is established；
(ii) integration method and integration step are chosen, the equation of motion of structure is solved.
4. a kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method according to claim 1 and device, feature exist
In step (c) processing physics minor structure method particularly includes:
According to physics sub-structure model scale and complexity, physics minor structure is subjected to work with prototype or scaled model
The prefabricated processing of factory and installation.
5. a kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method according to claim 1 and device, feature exist
In step (d) control, to the load of physics minor structure, the specific method is as follows:
(i) displacement prediction of the logarithm sub-structure model in each numerical integration step-length, speed are completed in control system
Prediction, acceleration prediction and internal force solve, and are modified using control algolithm；
(ii) it by data interaction system and control system, is calculated after reading numerical values minor structure and the amendment of physics minor structure junction
Displacement calculates force value, and as displacement of targets or target force, is loaded into physics minor structure by loading system and device
In corresponding freedom degree.
6. a kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method according to claim 1 and device, feature exist
Updating numerical value sub-structure model in step (d), the specific method is as follows:
Feedback quantity after force snesor and displacement sensor measure physics minor structure actual loaded, by data collection system sum number
Pass to numerical value sub-structure model again according to interactive system, the calculation basis as next integration step.
7. a kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method according to claim 1 and device, feature exist
Extracting information needed in step (e), the specific method is as follows:
(i) communication interface with controller is established on main control computer, regulates and controls each initial parameter at main control computer interface；
(ii) it is checked a little needed for being inputted on main control computer, stored device directly reads the dynamic response of the point.
8. a kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method according to claim 3 and device, feature exist
In storing the variable parameter under each integration step using variable store, completes information transmitting and update.
9. a kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method according to claim 5 and device, feature exist
In:
If (i) physics minor structure is prototype, displacement of targets or target force are directly loaded by physics using loading device
In structure, loading device can be divided into actuator, shake table, actuator-shake table coupling according to the actual situation；
(ii) it if physics minor structure is scaled model, converts displacement of targets or target force under scaled model according to condition of similarity
The displacement or power of physics minor structure, are loaded into physics minor structure by loading device.
10. a kind of submerged floating tunnel tube performance hybrid analog-digital simulation test method according to claim 6 and device, feature exist
In:
If (i) physics minor structure is prototype, the displacement or power of extracts physical sub-structure model are directly fed back to numerical value
In structure；
(ii) if physics minor structure is scaled model, the displacement or power of extracts physical sub-structure model turn according to condition of similarity
The displacement or power of numerical value minor structure under prototype are turned to, is fed back into numerical value minor structure.
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| CN201910293820.7A CN110263359B (en) | 2019-04-12 | 2019-04-12 | Hybrid simulation test method and device for suspended tunnel pipeline performance |
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