CN106339820A - Marine structure observed behavior multi-dimensional analysis method based on virtual reality and system - Google Patents
Marine structure observed behavior multi-dimensional analysis method based on virtual reality and system Download PDFInfo
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Abstract
The invention relates to a marine structure observed behavior multi-dimensional analysis method based on virtual reality and a system and belongs to the water power engineering construction management technology field. According to the method, a three-dimensional display and analysis problem of the marine structure observed data in the virtual reality is solved, in combination with related results, multi-dimensional comprehensive evaluation is carried out, space-time evolution of the marine structure observed work behavior along with an environment factor is dynamically simulated, a space monitoring evaluation model is established, a marine structure health status is rapidly diagnosed, limitations of a traditional two-dimensional result are eliminated, and the method is of great importance in improving a water power engineering management level.
Description
Technical Field
The invention belongs to the technical field of hydropower engineering construction management, and particularly relates to a virtual reality-based multi-dimensional analysis method and system for actual measurement performance of a hydraulic structure.
Background
The virtual reality technology is an important direction of the simulation technology, and is a collection of the simulation technology and a plurality of technologies such as computer graphics, multimedia technology, sensing technology, network technology and the like. The virtual reality technology has less application in the water and electricity industry, basically shows the engineering image and the face, and is basically blank in the field of professional analysis application. With the continuous deepening of the application of new technical means such as BIM and 3S technologies in hydroelectric engineering, the beneficial conditions are provided for the deep application of the virtual reality technology in the hydroelectric engineering, and if the advantages of intuition and visibility of the virtual reality technology are utilized, the level of rich professional analysis is realized, the intuition of professional analysis results is improved, and the method has important significance for guiding the safety decision of the hydroelectric engineering.
In recent years, hydropower development in China is particularly rapid, a batch of high dam garages represented by three gorges dam (dam height 181m), Jinsha Jiangxi Luo Du arch dam (dam height 285.5m), and lan Cangjiang Bay arch dam (dam height 294.5m) are continuously built, and with the continuous increase of dam heights and reservoir capacities, engineering safety monitoring is more and more concerned by governments, owners and the like. With the continuous increase of the operation period of many water conservancy and hydropower engineering, engineering safety monitoring and management means also face more and more challenges. In the safety monitoring profession, the engineering safety monitoring automatic system gradually becomes a new development trend of the hydropower engineering monitoring profession, the working state of the dam and other hydraulic buildings is mastered in real time through an automatic acquisition means, and the system is an important basis and guarantee for safety decision of the hydropower engineering. Traditional monitoring data analysis is only limited to a two-dimensional layer, information expression capacity is limited, non-professionals are difficult to quickly understand and acquire effective information, rapid safety judgment of a hydraulic structure based on measured data is not facilitated, and effective support is difficult to carry out on engineering safety decision. The safety monitoring data are displayed in a three-dimensional visual mode by means of a virtual reality technology, multi-dimensional analysis is carried out by combining related achievements such as environmental quantities, space dimension safety analysis and judgment of hydraulic buildings are carried out rapidly, related research contents are blank at home, and the method has important significance for guiding safety decisions of hydropower engineering.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide a hydraulic structure actual measurement performance multidimensional analysis method and system based on virtual reality, which solve the problem of three-dimensional display and analysis of hydraulic structure actual measurement data in virtual reality, perform multidimensional comprehensive evaluation by combining related results, dynamically simulate the spatial and temporal evolution of the hydraulic structure actual measurement working performance along with environmental factors, establish a spatial monitoring evaluation model and quickly diagnose the health condition of the hydraulic structure.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a hydraulic structure actual measurement performance multi-dimensional analysis method based on virtual reality comprises the following steps:
step 1, designing and arranging an automatic monitoring system according to the structural characteristics of a hydraulic structure, and automatically acquiring monitoring data and environmental quantity data of the hydraulic structure; the monitoring data comprises data of four monitoring items of deformation, stress strain, temperature and seepage;
step 2, synchronizing the data collected by the automatic monitoring system to a monitoring professional database in the server, and then calling an integral calculation formula of each monitoring point in the monitoring database to carry out integral editing of monitoring data;
step 3, building a BIM model and a geographic information GIS model, and loading and integrating model information of the building BIM model and the geographic information GIS model in the same platform; integrating a BIM building model and a GIS geographic information model according to longitude and latitude coordinates to construct a virtual reality three-dimensional scene of the hydropower project;
step 4, the monitoring data after being integrated is used as a data source, a three-dimensional distribution result of the building monitoring state is calculated by adopting a spatial interpolation algorithm, and the three-dimensional distribution result is displayed in a BIM (building information modeling) model in an equivalent cloud picture mode;
step 5, loading environmental quantity data in a GIS geographic information model, displaying upstream and downstream water levels in a GIS scene by adopting a water surface with an actual elevation, and displaying rainfall and flow by adopting a particle system model simulation effect to obtain an environmental quantity model;
step 6, loading an environmental quantity model in a GIS scene at the same time and a three-dimensional equivalent cloud picture representing the actually measured performance in a BIM model, and simulating synchronous dynamic display of the environmental quantity model and the BIM model along with the same time axis in a virtual reality three-dimensional scene of the hydroelectric engineering;
step 7, establishing a monitoring statistical model of each single-measuring point by adopting a stepwise regression method, calculating a judgment prediction value of each single-measuring point according to the monitoring statistical model of each single-measuring point, judging an actual measurement value of each single-measuring point according to the judgment prediction value of each single-measuring point, judging whether the actual measurement value is in an allowable range of the monitoring model, and identifying whether the actual measurement value is normal, basically normal or abnormal; and according to the evaluation result and the three-dimensional space coordinate of each single-measuring-point, adopting a space interpolation algorithm to construct a space monitoring prediction evaluation model of each monitoring project of the hydraulic building, and performing three-dimensional display in the BIM model to assist management decisions of power station managers.
Further, preferably, in step 1, the monitoring data automatically acquired by the automatic monitoring system is data measured by a plumb line, an inverted plumb line, an osmometer, an inclinometer, a piezometer, a multidirectional strain gauge group, a thermometer and a water measuring weir; the environment quantity data comprises upstream and downstream water levels, rainfall and flow.
Further, it is preferable that in step 4, the method for calculating the three-dimensional distribution of the building monitoring state includes: deformation, stress strain and temperature monitoring projects take three-dimensional coordinates of monitoring points as interpolation points, actually-measured and completely-compiled data of the monitoring points are taken as data sources, BIM (building information modeling) is taken as boundary constraint, spatial distribution fields of different working conditions of the hydraulic structure are formed by a spatial interpolation method, and visual display is carried out on the BIM; the seepage monitoring item takes the three-dimensional coordinate of the piezometer tube as a datum point, takes the actually measured and compiled data of the monitoring point as a data source, forms a three-dimensional columnar distribution model of the piezometer tube measurement value in the BIM model, and visually knows and grasps the distribution condition of the seepage space.
Further, it is preferable that the method of judging the measured value according to the predicted value of the single-point evaluation comprises:
1) if the predicted value is judgedAnd measured value y0iSatisfy the requirement ofIf so, the measured value is normal;
2) if the measured value satisfiesThen, the measurement is repeated for 2-3 times and still performedIn between, the measured value is basically normal, but the cause of further observation and analysis should be carried out;
3) if it is actually measuredSatisfy the requirement ofIf the measured value is abnormal, early warning is needed;
wherein ,judging and predicting values of the single measuring points; y is0iThe measured value of the single measuring point is taken as the actual measured value; and S is the standard deviation of the single-measuring-point monitoring statistical model.
A hydraulic structure actual measurement performance multidimensional analysis system based on virtual reality comprises a data acquisition layer, a data collection layer, a data service layer, a model rendering layer and an application service layer;
the data acquisition layer, the data collection layer, the data service layer, the model rendering layer and the application service layer are sequentially connected;
the data acquisition layer is used for acquiring original data information of deformation, seepage, stress strain, temperature and environmental quantity of the hydraulic structure;
the data acquisition layer comprises a deformation monitoring instrument, a seepage monitoring instrument, a stress-strain monitoring instrument, a temperature monitoring instrument and an environmental quantity monitoring instrument which are used for monitoring the hydraulic structure;
the data collection layer comprises a monitoring professional database, a geographic space database and a BIM model information database;
the method comprises the following steps that original data obtained by a data acquisition layer enter a data collection layer through a data collection interface, calculation is carried out according to an integral formula of each monitoring point, and an integral calculation result is stored in a monitoring professional database;
the geographic space database is used for storing digital elevation information and orthographic image information in the geographic information model;
the BIM model information database is used for storing BIM models of various monitoring instruments and BIM models of hydraulic buildings;
the data service layer is used for acquiring the whole-compiled data in the professional monitoring database and calculating the three-dimensional distribution of the actually measured form of the building by adopting a spatial interpolation algorithm;
the data service layer comprises a monitoring building deformation space judgment model, a geographic information model construction module and a BIM model construction module;
the building deformation space evaluation model is used for establishing a monitoring statistical model of monitoring single-measuring points by adopting a stepwise regression method, and carrying out space interpolation on the monitoring statistical model of the single-measuring points to construct a space monitoring prediction evaluation model;
the geographic information model building module is used for loading digital elevation information and orthoscopic image information of the hydraulic structure from a geographic space database and then building a geographic information three-dimensional scene model;
the BIM model construction module is used for loading the BIM model of the hydraulic structure and the BIM models of all monitoring instruments from the BIM model information database to form a BIM three-dimensional model;
the model rendering layer is used for loading the BIM three-dimensional model constructed by the BIM model construction module and the geographic information three-dimensional scene model constructed by the geographic information model construction module, establishing a virtual reality scene of the hydropower project and rendering and displaying the virtual reality scene;
the application service layer comprises a data management module, a GIS environment management module, a BIM model management module, a BIM equivalent cloud picture module, a multi-dimensional information display module and a space judgment model module;
the data management module is used for adding, deleting, inquiring and modifying the monitoring professional database;
the GIS environment management module is used for managing a geographic information model of a junction area and a reservoir area range of the hydropower project;
the BIM model management module is used for setting BIM model display mode switching, cutting, transparency, color and visual angle customization, three-dimensional scale display and screenshot operation;
the BIM equivalent cloud picture module is used for calling the space monitoring prediction evaluation model to calculate a three-dimensional interpolation result of the working form of the building, and displaying the three-dimensional interpolation result in the BIM three-dimensional model in an equivalent cloud picture form;
the multi-dimensional information display module is used for loading and displaying the equivalent cloud picture information obtained in the equivalent cloud picture module of the environmental quantity and the BIM in the virtual reality scene of the hydropower project, and controlling the dynamic display of the environmental quantity and the equivalent cloud picture information in the virtual reality environment through time progress;
and the space evaluation model module is used for calling the monitoring statistical model of the single measuring point, calculating the deformation evaluation result of the measuring point, calling the space monitoring prediction evaluation model to calculate the deformation space evaluation result of the building, and displaying the deformation space evaluation result in the BIM three-dimensional model in an equivalent cloud picture form.
Further, it is preferable that the GIS environmental management module is used for acquiring upstream and downstream water level, rainfall and flow data in the monitoring professional database, then displaying upstream and downstream water level elevations of the reservoir area in the virtual reality scene of the water and electricity engineering according to upstream and downstream water level actual elevations, and displaying rainfall and flow according to the particle system parameter simulation effect set by numerical values.
Further, a BIM equivalent cloud picture module is preferred, which comprises a three-dimensional curved surface display unit and a BIM display unit;
and the three-dimensional curved surface display unit reads the measured and integrated data of the monitoring points in the monitoring professional database as a data source, takes the three-dimensional coordinates of the monitoring points as interpolation points, forms a three-dimensional curved surface at the monitoring point positions by a Delaunay triangulation network generation method, and takes the three-dimensional curved surface as a generation range and a boundary of interpolation calculation to obtain a three-dimensional curved surface monitoring cloud picture after the calculation is finished. If the monitoring items are deformation and stress strain, the data is in a vector form, a user can set the deformation proportion of the three-dimensional curved surface in the vector direction, and the change influence of the actually measured performance of the building on the monitoring point is simulated.
And the BIM display unit reads the measured and compiled data of the monitoring points in the monitoring professional database as a data source, takes the three-dimensional coordinates of the monitoring points as interpolation points, takes the node coordinates of the BIM model as the generation range and the boundary of interpolation calculation, and obtains a three-dimensional BIM monitoring cloud picture after the calculation is finished. If the monitoring items are deformation and stress strain, the data is in a vector form, a user can set the deformation proportion of the monitoring BIM in the vector direction, and the change influence of the actual measurement performance of the building on the whole building is simulated.
Further, it is preferable that the model rendering layer is rendered by using a three-dimensional open source engine VTK.
Compared with the prior art, the invention has the beneficial effects that:
1. the BIM model, the geographic information model and the monitored actual measurement data multi-source heterogeneous information are displayed in a centralized mode in the virtual reality environment, and the problem of multi-platform operation is solved.
2. The docking monitoring automatic system creatively realizes the multi-dimensional dynamic real-time analysis and display of the actual measurement performance of the hydraulic structure in the virtual reality, and has the advantages of high reliability, convenient operation, intuition, understandability, real-time performance and high efficiency.
3. The method is characterized by establishing a working state space evaluation model of hydraulic buildings such as dams and the like, performing quick safety evaluation and diagnosis on the hydraulic buildings, assisting engineering decision, guaranteeing engineering safety and making up for the blank of the prior art.
Drawings
FIG. 1 is a flow chart of a virtual reality-based multi-dimensional analysis method for actual measurement performance of a hydraulic structure;
FIG. 2 is a structure diagram of a virtual reality-based multi-dimensional analysis system for measured behavior of a hydraulic structure;
100, a data acquisition layer; 101. a deformation monitoring instrument; 102. a deformation monitoring instrument; 103. a stress-strain monitoring instrument; 104. a temperature monitoring instrument; 105. an environmental quantity monitoring instrument; 110. a data collection interface; 120. three-dimensional modeling software; 200. a data collection layer; 201. monitoring a professional database; 202. a geospatial database; 203. a BIM model information database; 300. a data service layer; 301. monitoring a building deformation space judgment model; 302. a geographic information model construction module; 303. a BIM model building module; 400. a model rendering layer; 401. a three-dimensional open source engine VTK; 500. an application service layer; 501. a data management module; 502. a GIS environment management module; 503. a BIM model management module; 504. a BIM equivalent cloud map module; 505. a multi-dimensional information display module; 506, a space judgment model module; 514. a three-dimensional curved surface display unit; 524. a BIM display unit.
Detailed Description
The present invention will be described in further detail with reference to examples.
It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The materials, instruments or equipment are not indicated by manufacturers, and all the materials, instruments or equipment are conventional products which can be obtained by purchasing.
It will be understood by those skilled in the art that the related modules and the functions implemented by the related modules in the present invention are implemented by carrying a conventional computer software program or related protocol on the modified hardware and the devices, devices or systems formed by the hardware, and are not modified by the computer software program or related protocol in the prior art. For example, the improved computer hardware system can still realize the specific functions of the hardware system by loading the existing software operating system. Therefore, it can be understood that the innovation of the present invention lies in the improvement of the hardware module and the connection combination relationship thereof in the prior art, rather than the improvement of the software or the protocol loaded in the hardware module for realizing the related functions.
Those skilled in the art will appreciate that the modules referred to in this application are hardware devices for performing one or more of the operations, methods, steps in the processes, measures, solutions, and so on described in this application. The hardware devices may be specially designed and constructed for the required purposes, or they may be of the kind well known in the general purpose computers or other hardware devices known. The general purpose computer has a program stored therein that is selectively activated or reconfigured.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As shown in fig. 1, a virtual reality-based multi-dimensional analysis method for measured behavior of a hydraulic structure includes the following steps:
step 1, designing and arranging an automatic monitoring system according to the structural characteristics of the hydraulic structure, automatically acquiring monitoring data and environmental quantity data of the hydraulic structure, and comprehensively monitoring the working performance of the hydraulic structure; the monitoring data comprises data of four monitoring items of deformation, stress strain, temperature and seepage;
the monitoring data automatically acquired by the automatic monitoring system are data measured by a plumb line, an inverted plumb line, an osmometer, an inclinometer, a piezometer pipe, a multi-direction strain gauge group, a thermometer and a water measuring weir; the environment quantity data comprises upstream and downstream water levels, rainfall and flow.
Step 2, synchronizing the data collected by the automatic monitoring system to a monitoring professional database in the server, and then calling an integral calculation formula of each monitoring point in the monitoring database to carry out integral editing of monitoring data;
the automatic monitoring system synchronizes the acquired data to a rear server in a wired or wireless mode, classifies and stores the acquired data in the monitoring professional data according to the type of the monitoring instrument, calls a monitoring instrument compilation calculation formula in a monitoring professional database for calculation, and converts an electric measurement result in an original measurement value into an effect quantity required by analysis, such as displacement, stress, flow and the like.
Step 3, building a BIM model and a geographic information GIS model, and loading and integrating model information of the building BIM model and the geographic information GIS model in the same platform; integrating a BIM building model and a GIS geographic information model according to longitude and latitude coordinates to construct a virtual reality three-dimensional scene of the hydropower project;
building BIM models such as dams and monitoring instruments by adopting three-dimensional modeling software such as Revit, Invertor and 3dmax, building a geographic information model of an arch dam junction region by adopting a reservoir region aerial survey image and a DEM, and integrating the BIM models and the GIS models according to a uniform coordinate system to build a virtual reality three-dimensional scene.
Step 4, the monitoring data after being integrated is used as a data source, a three-dimensional distribution result of the building monitoring state is calculated by adopting a spatial interpolation algorithm, and the three-dimensional distribution result is displayed in a BIM (building information modeling) model in an equivalent cloud picture mode;
the three-dimensional distribution calculation method of the building monitoring state comprises the following steps: deformation, stress strain and temperature monitoring projects take three-dimensional coordinates of monitoring points as interpolation points, the actually-measured and completely-compiled data of the monitoring points are taken as data sources, BIM (building information modeling) is taken as boundary constraint, spatial distribution fields of different working conditions of the hydraulic structure are formed by a spatial interpolation method, and visual display is carried out on the BIM; the seepage monitoring item takes the three-dimensional coordinate of the piezometer tube as a datum point, takes the actually measured and compiled data of the monitoring point as a data source, forms a three-dimensional columnar distribution model of the piezometer tube measurement value in the BIM model, and visually knows and grasps the distribution condition of the seepage space.
Step 5, loading environmental quantity data in a GIS geographic information model, displaying upstream and downstream water levels in a GIS scene by adopting a water surface with an actual elevation, and displaying rainfall and flow by adopting a particle system model simulation effect to obtain an environmental quantity model;
step 6, loading an environmental quantity model in a GIS scene at the same time and a three-dimensional equivalent cloud picture representing the actually measured performance in a BIM model, and simulating synchronous dynamic display of the environmental quantity model and the BIM model along with the same time axis in a virtual reality three-dimensional scene of the hydroelectric engineering;
step 7, establishing a monitoring statistical model of each single-measuring point by adopting a stepwise regression method, calculating a judgment prediction value of each single-measuring point according to the monitoring statistical model of each single-measuring point, judging an actual measurement value of each single-measuring point according to the judgment prediction value of each single-measuring point, judging whether the actual measurement value is in an allowable range of the monitoring model, and identifying whether the actual measurement value is normal, basically normal or abnormal; and according to the evaluation result and the three-dimensional space coordinate of each single-measuring-point, adopting a space interpolation algorithm to construct a space monitoring prediction evaluation model of each monitoring project of the hydraulic building, and performing three-dimensional display in the BIM model to assist management decisions of power station managers.
Firstly, a monitoring model of a dam deformation single-measuring point is established by a stepwise regression analysis method. Dam displacement is mainly affected by water pressure, temperature, aging and other factors. Thus, the displacement consists of a hydraulic component, a temperature component and an aging component, namely:
＝H+T+θ(1)
in the formula: -a displacement;
H-a hydraulic pressure component;
T-a temperature component;
θ-an aging component.
The following briefly introduces the expressions for the above components:
1) water pressure component (H)
For a large dam, any point of the dam section generates a water pressure component under the action of water pressureHIn relation to water depth H, H2, H3, namely:
in the formula: h, water depth in front of a dam;
H0measuring the depth of the water in the day before the dam;
ai-a regression coefficient;
i is the power of i.
2) Temperature component(T)
The temperature basically changes periodically from years of observation, so that the temperature factor can select periodic harmonic as the factor and simulate the temperature periodic change by using the harmonic function to obtain the temperature componentTNamely:
in the formula: b1i、b2i-regression coefficients (i ═ 1-2);
t is the cumulative number of days from the monitoring day to the initial measuring day;
t0-calculating the cumulative number of days from and to the start of the session.
3) Age component (θ)
The reasons for the aging deformation of the dam are very complex, and the aging deformation comprehensively reflects creep and plastic deformation of dam body concrete and a rock foundation, compression deformation of a rock foundation geological structure and the like. Referring to similar engineering experience, the aging component of the displacement change is represented by the following equation:
θ＝c0(θ-θ0)+c1(lnθ-lnθ0) (4)
in the formula: c. C0、c1-fitted regression coefficients;
theta is the cumulative number of days from the monitoring day to the measurement point starting day divided by 100;
θ0-modeling the cumulative number of days from the start date to the start test date divided by 100.
In summary, considering the influence of the initial value, the statistical model of the dam displacement is obtained as follows:
compared with a single-measuring-point model, the spatial monitoring model establishes the connection between different measuring points of the same project, has more general power and can reflect the time-space distribution of deformation. Specifically, the spatial displacement field model is a spatial monitoring model established by using measuring point sequences of a plurality of spatial measuring points and introducing spatial coordinate variables of the measuring points, namely:
＝(H,T,θ,x,y,z) (6)
in the formula: H. t and theta are respectively the water pressure, temperature and time environment influence quantity; x, y and z are the coordinates of the space position of the measuring point in the three-dimensional rectangular coordinate respectively.
The method for judging the measured value according to the judgment predicted value comprises the following steps:
1) if the model judges the predicted valueAnd measured value y0iSatisfy the requirement ofIf so, the measured value is normal;
2) if the measured value satisfiesThen, the measurement is repeated for 2-3 times and still performedIn between, the measured value is basically normal, but the cause of further observation and analysis should be carried out;
3) if the measured value satisfiesIf the measured value is abnormal, early warning is needed;
wherein:judging a predicted value for the monitoring model; y is0iIs an actual measurement value; and S is the standard deviation of the monitoring model.
The standard deviation is calculated as:
in formula (7): y isiThe fitting value of the monitoring model, namely the fitting value calculated by the single-point known data through the monitoring statistical model; y is0iIs an actual measurement value.
In order to reduce the calculation amount of the space model and realize the rapid diagnosis and early warning of the health condition of the hydraulic structure, the specific processing method comprises the following steps: and (3) on the basis of the monitoring statistical model of the single measuring points, according to the three-dimensional space coordinates of the single measuring points, a space monitoring prediction evaluation model is approximately obtained through a space interpolation algorithm. And correspondingly dividing three early warning state intervals of green, yellow and red according to whether the measured value is normal, basically normal and abnormal, and carrying out three-dimensional display on the judgment result in a BIM (building information modeling) model to assist management decisions of power station managers.
Referring to fig. 2, a virtual reality-based multi-dimensional analysis system for measured performance of a hydraulic structure includes a data acquisition layer 100, a data collection layer 200, a data service layer 300, a model rendering layer 400, and an application service layer 500;
the data acquisition layer 100, the data collection layer 200, the data service layer 300, the model rendering layer 400 and the application service layer 500 are sequentially connected;
the data acquisition layer 100 is used for acquiring original data information of deformation, seepage, stress strain, temperature and environmental quantity of a hydraulic structure;
the data acquisition layer 100 comprises a deformation monitoring instrument 101, a seepage monitoring instrument 102, a stress-strain monitoring instrument 103, a temperature monitoring instrument 104 and an environmental quantity monitoring instrument 105 which are used for monitoring a hydraulic structure;
the data collection layer 200 comprises a monitoring professional database 201, a geospatial database 202 and a BIM model information database 203;
the original data obtained by the data acquisition layer 100 enters the data collection layer 200 through the data collection interface 110, is calculated according to the compilation formula of each monitoring point, and stores the compilation calculation result into the monitoring professional database 201;
the geospatial database 202 is used for storing digital elevation information and ortho-image information in the geographic information model;
the BIM model information database 203 is used for storing BIM models of various monitoring instruments and BIM models of hydraulic buildings;
the data service layer 300 is used for acquiring the whole editing data in the monitoring professional database 201 and calculating the three-dimensional distribution of the building actual measurement form by adopting a spatial interpolation algorithm;
the data service layer 300 comprises a monitoring building deformation space judgment model 301, a geographic information model construction module 302 and a BIM model construction module 303;
the building deformation space evaluation model 301 is used for establishing a monitoring statistical model of monitoring single-measuring points by adopting a stepwise regression method, and performing space interpolation on the monitoring statistical model of the single-measuring points to construct a space monitoring prediction evaluation model;
the geographic information model construction module 302 is used for loading digital elevation information and orthographic image information of the hydraulic structure from the geospatial database 202 and then constructing a geographic information three-dimensional scene model;
the BIM model construction module 303 is used for loading the BIM model of the hydraulic structure and the BIM models of the monitoring instruments from the BIM model information database 203 to form a BIM three-dimensional model;
the model rendering layer 400 is used for loading the BIM three-dimensional model constructed by the BIM model construction module 303 and the geographic information three-dimensional scene model constructed by the geographic information model construction module 302, establishing the virtual reality scene of the hydropower project, and rendering and displaying;
the application service layer 500 comprises a data management module 501, a GIS environment management module 502, a BIM model management module 503, a BIM equivalent cloud picture module 504, a multidimensional information display module 505 and a space judgment model module 506;
the data management module 501 is used for adding, deleting, inquiring and modifying the monitoring professional database 201;
a GIS environment management module 502 for managing a geographic information model of a junction area and a reservoir area of the hydropower project;
a BIM model management module 503, configured to set display mode switching, cutting, transparency, color, view angle customization, three-dimensional scale display, and screenshot operation of the BIM model;
a BIM equivalent cloud picture module 504, configured to invoke the spatial monitoring prediction evaluation model to calculate a three-dimensional interpolation result of the building working form, and display the result in the BIM three-dimensional model in the form of an equivalent cloud picture;
the multi-dimensional information display module 505 is used for loading and displaying the equivalent cloud picture information obtained in the equivalent cloud picture module 504 of the environmental quantity and the BIM in the virtual reality scene of the hydropower project, and controlling the dynamic display of the environmental quantity and the equivalent cloud picture information in the virtual reality environment through time schedule;
and the space evaluation model module 506 is used for calling a monitoring statistical model of the single measuring point, calculating a deformation evaluation result of the measuring point, calling a space monitoring prediction evaluation model to calculate a building deformation space evaluation result, and displaying the building deformation space evaluation result in a BIM three-dimensional model in an equivalent cloud picture form.
The GIS environment management module 502 is used for acquiring upstream and downstream water level, rainfall and flow data in the monitoring professional database 201, then displaying upstream and downstream water level heights of a reservoir area in a virtual reality scene of the hydropower project according to upstream and downstream water level actual heights, and displaying rainfall and flow according to a particle system parameter simulation effect set by numerical values.
The BIM equivalent cloud picture module 504 comprises a three-dimensional curved surface display unit 514 and a BIM display unit 524;
the three-dimensional curved surface display unit 514 reads the measured and compiled data of the monitoring points in the monitoring professional database 201 as a data source, takes the three-dimensional coordinates of the monitoring points as interpolation points, forms a three-dimensional curved surface at the monitoring point positions by a Delaunay triangulation network generation method, and takes the three-dimensional curved surface as a generation range and a boundary of interpolation calculation to obtain a three-dimensional curved surface monitoring cloud picture after the calculation is completed.
The BIM display unit 524 reads the measured and compiled data of the monitoring points in the monitoring professional database 201 as a data source, uses the three-dimensional coordinates of the monitoring points as interpolation points, uses the coordinates of the node of the BIM model as the generation range and boundary of interpolation calculation, and obtains a three-dimensional BIM monitoring cloud picture after calculation.
The model rendering layer 400 is rendered by using a three-dimensional open source engine VTK 401.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A hydraulic structure actual measurement performance multi-dimensional analysis method based on virtual reality is characterized by comprising the following steps:
step 1, designing and arranging an automatic monitoring system according to the structural characteristics of a hydraulic structure, and automatically acquiring monitoring data and environmental quantity data of the hydraulic structure; the monitoring data comprises data of four monitoring items of deformation, stress strain, temperature and seepage;
step 2, synchronizing the data collected by the automatic monitoring system to a monitoring professional database in the server, and then calling an integral calculation formula of each monitoring point in the monitoring database to carry out integral editing of monitoring data;
step 3, building a BIM model and a geographic information GIS model, and loading and integrating model information of the building BIM model and the geographic information GIS model in the same platform; integrating a BIM building model and a GIS geographic information model according to longitude and latitude coordinates to construct a virtual reality three-dimensional scene of the hydropower project;
step 4, the monitoring data after being integrated is used as a data source, a three-dimensional distribution result of the building monitoring state is calculated by adopting a spatial interpolation algorithm, and the three-dimensional distribution result is displayed in a BIM (building information modeling) model in an equivalent cloud picture mode;
step 5, loading environmental quantity data in a GIS geographic information model, displaying upstream and downstream water levels in a GIS scene by adopting a water surface with an actual elevation, and displaying rainfall and flow by adopting a particle system model simulation effect to obtain an environmental quantity model;
step 6, loading an environmental quantity model in a GIS scene at the same time and a three-dimensional equivalent cloud picture representing the actually measured performance in a BIM model, and simulating synchronous dynamic display of the environmental quantity model and the BIM model along with the same time axis in a virtual reality three-dimensional scene of the hydroelectric engineering;
step 7, establishing a monitoring statistical model of each single-measuring point by adopting a stepwise regression method, calculating a judgment prediction value of each single-measuring point according to the monitoring statistical model of each single-measuring point, judging an actual measurement value of each single-measuring point according to the judgment prediction value of each single-measuring point, judging whether the actual measurement value is in an allowable range of the monitoring model, and identifying whether the actual measurement value is normal, basically normal or abnormal; and according to the evaluation result and the three-dimensional space coordinate of each single-measuring-point, adopting a space interpolation algorithm to construct a space monitoring prediction evaluation model of each monitoring project of the hydraulic building, and performing three-dimensional display in the BIM model to assist management decisions of power station managers.
2. The multi-dimensional analysis method for the measured performance of the hydraulic structure based on the virtual reality according to claim 1, wherein in the step 1, the monitoring data automatically collected by the automatic monitoring system are data measured by a plumb line, an inverted plumb line, an osmometer, an inclinometer, a piezometer pipe, a multi-direction strain gauge group, a thermometer and a water measuring weir; the environment quantity data comprises upstream and downstream water levels, rainfall and flow.
3. The virtual reality-based multi-dimensional analysis method for the measured performance of the hydraulic structure according to claim 1, wherein in the step 4, the three-dimensional distribution calculation method for the monitoring state of the structure comprises the following steps: deformation, stress strain and temperature monitoring projects take three-dimensional coordinates of monitoring points as interpolation points, the actually-measured and completely-compiled data of the monitoring points are taken as data sources, BIM (building information modeling) is taken as boundary constraint, spatial distribution fields of different working conditions of the hydraulic structure are formed by a spatial interpolation method, and visual display is carried out on the BIM; the seepage monitoring item takes the three-dimensional coordinate of the piezometer tube as a datum point, takes the actually measured and compiled data of the monitoring point as a data source, forms a three-dimensional columnar distribution model of the piezometer tube measurement value in the BIM model, and visually knows and grasps the distribution condition of the seepage space.
4. The multi-dimensional analysis method for the actual measurement performance of the hydraulic building based on the virtual reality as claimed in claim 1, wherein the method for judging the actual measurement value according to the predicted value of the single-point evaluation comprises the following steps:
1) if the predicted value is judgedAnd measured value y0iSatisfy the requirement ofIf so, the measured value is normal;
2) if the measured value satisfiesThen, the measurement is repeated for 2-3 times and still performedIn between, the measured value is basically normal, but the cause of further observation and analysis should be carried out;
3) if the measured value satisfiesIf the measured value is abnormal, early warning is needed;
wherein ,judging and predicting values of the single measuring points; y is0iThe measured value of the single measuring point is taken as the actual measured value; and S is the standard deviation of the single-measuring-point monitoring statistical model.
5. A hydraulic structure actual measurement performance multidimensional analysis system based on virtual reality is characterized by comprising a data acquisition layer (100), a data collection layer (200), a data service layer (300), a model rendering layer (400) and an application service layer (500);
the data collection layer (100), the data collection layer (200), the data service layer (300), the model rendering layer (400) and the application service layer (500) are sequentially connected;
the data acquisition layer (100) is used for acquiring original data information of deformation, seepage, stress strain, temperature and environmental quantity of the hydraulic structure;
the data acquisition layer (100) comprises a deformation monitoring instrument (101), a seepage monitoring instrument (102), a stress-strain monitoring instrument (103), a temperature monitoring instrument (104) and an environmental quantity monitoring instrument (105) which are used for monitoring a hydraulic structure;
the data collection layer (200) comprises a monitoring professional database (201), a geospatial database (202) and a BIM model information database (203);
the method comprises the steps that original data obtained by a data acquisition layer (100) enter a data collection layer (200) through a data collection interface (110), calculation is carried out according to an editing formula of each monitoring point, and an editing calculation result is stored in a monitoring professional database (201);
the geospatial database (202) is used for storing digital elevation information and orthographic image information in the geographic information model;
the BIM model information database (203) is used for storing BIM models of various monitoring instruments and BIM models of hydraulic buildings;
the data service layer (300) is used for acquiring the whole-compiled data in the monitoring professional database (201) and calculating the three-dimensional distribution of the actually measured form of the building by adopting a spatial interpolation algorithm;
the data service layer (300) comprises a monitoring building deformation space judgment model (301), a geographic information model building module (302) and a BIM model building module (303);
the building deformation space evaluation model (301) is used for establishing a monitoring statistical model of monitoring single-measuring points by adopting a stepwise regression method, and carrying out space interpolation on the monitoring statistical model of the single-measuring points to construct a space monitoring prediction evaluation model;
the geographic information model building module (302) is used for loading digital elevation information and orthoscopic image information of the hydraulic structure from the geographic space database (202) and then building a geographic information three-dimensional scene model;
the BIM model construction module (303) is used for loading the BIM model of the hydraulic structure and the BIM models of all monitoring instruments from the BIM model information database (203) to form a BIM three-dimensional model;
the model rendering layer (400) is used for loading the BIM three-dimensional model constructed by the BIM model construction module (303) and the geographic information three-dimensional scene model constructed by the geographic information model construction module (302), establishing the virtual reality scene of the hydropower project, and rendering and displaying the virtual reality scene;
the application service layer (500) comprises a data management module (501), a GIS environment management module (502), a BIM model management module (503), a BIM equivalent cloud picture module (504), a multi-dimensional information display module (505) and a space judgment model module (506);
the data management module (501) is used for adding, deleting, inquiring and modifying the monitoring professional database (201);
the GIS environment management module (502) is used for managing a geographic information model of a hydropower project junction area and a reservoir area range;
the BIM model management module (503) is used for setting display mode switching, cutting, transparency, color, visual angle customization, three-dimensional scale display and screenshot operation of the BIM model;
the BIM equivalent cloud picture module (504) is used for calling the space monitoring prediction evaluation model to calculate a three-dimensional interpolation result of the working form of the building, and the three-dimensional interpolation result is displayed in the BIM three-dimensional model in an equivalent cloud picture form;
the multi-dimensional information display module (505) is used for loading and displaying equivalent cloud picture information obtained in the environment quantity and BIM equivalent cloud picture module (504) in the virtual reality scene of the hydropower project, and controlling dynamic display of the environment quantity and the equivalent cloud picture information in the virtual reality environment through time progress;
and the space evaluation model module (506) is used for calling the monitoring statistical model of the single measuring point, calculating the deformation evaluation result of the measuring point, calling the space monitoring prediction evaluation model to calculate the deformation space evaluation result of the building, and displaying the deformation space evaluation result in the BIM three-dimensional model in an equivalent cloud picture mode.
6. The virtual reality based multi-dimensional analysis system for the measured performance of the hydraulic buildings according to the claim 5, characterized in that the GIS environment management module (502) is used for acquiring data of upstream and downstream water levels, rainfall and flow in the monitoring professional database (201), then displaying the upstream and downstream water levels in the virtual reality scene of the hydropower project according to the actual elevation of the upstream and downstream water levels, and displaying the simulation effect of the rainfall and flow according to the parameter setting particle system.
7. The virtual reality based multi-dimensional analysis system for measured performance of hydraulic buildings according to claim 5, wherein the BIM equivalent cloud picture module (504) comprises a three-dimensional curved surface display unit (514) and a BIM display unit (524);
and the three-dimensional curved surface display unit (514) reads the measured and compiled data of the monitoring points in the monitoring professional database (201) as a data source, takes the three-dimensional coordinates of the monitoring points as interpolation points, forms a three-dimensional curved surface at the monitoring point positions by a Delaunay triangulation network generation method as a generation range and a boundary of interpolation calculation, and obtains a three-dimensional curved surface monitoring cloud picture after the calculation is completed.
And the BIM display unit (524) reads the measured and compiled data of the monitoring points in the monitoring professional database (201) as a data source, takes the three-dimensional coordinates of the monitoring points as interpolation points, takes the node coordinates of the BIM model as the generation range and boundary of interpolation calculation, and obtains the three-dimensional BIM monitoring cloud picture after the calculation is finished.
8. The virtual reality based multi-dimensional analysis system for measured behavior of hydraulic buildings according to claim 5, wherein the model rendering layer (400) is rendered by a three-dimensional open source engine VTK (401).
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