CN117235872A

CN117235872A - Forward design method for municipal traffic engineering

Info

Publication number: CN117235872A
Application number: CN202311499652.XA
Authority: CN
Inventors: 陈伟; 邓广辉; 霍文斌; 陈海斌; 魏文鼎; 陈程; 顾庆福; 王杰聪; 陆拍坚; 林俊勇; 陈丽甜
Original assignee: Architectural Design and Research Institute of Guangdong Province
Current assignee: Architectural Design and Research Institute of Guangdong Province
Priority date: 2023-11-13
Filing date: 2023-11-13
Publication date: 2023-12-15
Anticipated expiration: 2043-11-13
Also published as: CN117235872B

Abstract

The invention provides a forward design method of municipal traffic engineering, which comprises the following steps: acquiring the current municipal traffic engineering design processing requirements; based on preset conditions, carrying out design type splitting on the current design processing requirements to form a plurality of design type processing requirements, and determining design data processing platforms corresponding to different design type processing requirements; the design data processing platforms comprise a plurality of design data processing platforms, and each design data processing platform is used for processing different design type processing requirements; and carrying out format unification processing on the data subjected to the design processing so as to ensure that the data format exported by each design data processing platform is the same. According to the invention, a proper design data processing platform is selected according to design processing requirements, so that the targeted processing of different design processing requirements is realized, and the forward design of various software cooperation of complex municipal traffic engineering is solved.

Description

Forward design method for municipal traffic engineering

Technical Field

The invention belongs to the field of design, and relates to a forward design method of municipal traffic engineering.

Background

Municipal traffic engineering, especially matched with large traffic junction, is designed by cooperation of multiple departments in the traditional design process due to cooperation of multiple fields such as roads, bridge-tunnel structures, traffic, water supply and drainage, strong and weak electricity and the like. In addition, no system has developed forward design application in municipal traffic engineering in China, and the matched municipal traffic engineering of the hub airport is more complex than the traditional municipal traffic engineering, and has the characteristics of complex linear and differential multi-plate roads, multi-curve variable-cross-section bridge tunnels and integration of various outdoor pipelines. Because of the complexity of the model and the requirement of auxiliary measurement of the engineering quantity of the model, any BIM software platform such as Autodesk (revit/Civil 3D), bentley, catia, guangda, midas and the like cannot be independently realized, and engineering examples are not available, so that a method for realizing collaborative design is needed to be provided.

Disclosure of Invention

The invention provides a forward design method for municipal traffic engineering, which can realize the collaborative design of various software.

The invention provides a forward design method of municipal traffic engineering in a complex environment of a large traffic hub, which comprises the following steps:

acquiring the current municipal traffic engineering design processing requirements;

based on preset conditions, carrying out design type splitting on the current design processing requirements to form a plurality of design type processing requirements, and determining design data processing platforms corresponding to different design type processing requirements; the design data processing platforms comprise a plurality of design data processing platforms, and each design data processing platform is used for processing different design type processing requirements;

and carrying out format unification processing on the data subjected to the design processing so as to ensure that the data format exported by each design data processing platform is the same.

Further, the processing procedure of the design data processing platform comprises:

classifying and identifying the current design processing requirements;

extracting design elements based on the design type processing requirements after classification and identification;

forming a design plan based on the design elements and the design processing requirements;

workload estimation is performed based on design planning;

Packaging the design elements, the design processing requirements and the workload prediction to form a design scheme, and obtaining the data after the design processing.

Further, the plurality of design data processing platforms are respectively:

the first design data processing platform is used for processing road engineering, traffic engineering and lighting engineering;

the second design data processing platform is used for processing water supply engineering, drainage engineering, lighting pipelines, traffic pipelines, electric power engineering, communication engineering and pipeline synthesis;

and the third design data processing platform is used for processing bridge engineering and tunnel engineering.

Further, the performing format unification processing on the data after the design processing to ensure that the data format exported by each design data processing platform is the same includes:

extracting the data after design processing, and importing the data into a format unification processing platform;

the format unification processing platform enables the data after design processing to form a preset data format based on preset conditions.

Further, the preset data format is IFC.

Further, the combining the data after the unifying processing of each format to form combined data includes:

Extracting characteristic information of municipal traffic engineering design processing requirements to obtain one or more characteristic position base point information;

establishing 2D and/or 3D virtual images for the data subjected to the unified processing of each format;

identifying characteristic position base points corresponding to the characteristic position base point information in the virtual image;

overlapping the same characteristic position base points in the virtual images to form a virtual image combination diagram;

and carrying out format conversion on the virtual image combination graph to form combination data.

Further, the overlapping the same feature position base points in each virtual image to form a virtual image combined graph includes:

overlapping the same characteristic position base points in the virtual images;

identifying a display level corresponding to the data subjected to unified processing of each format;

and setting the display priority order of each virtual image according to the display hierarchy to form a virtual image combination diagram.

Still further, the method further comprises:

the combined data is subjected to a light weight process to reduce the data amount of the combined data.

Furthermore, the feature information extraction is performed on the municipal traffic engineering design processing requirement to obtain one or more feature position base point information, including:

Feature extraction is carried out on municipal traffic engineering design processing requirements, and a preliminary virtual image is established;

selecting a plurality of preliminary feature position base points in the preliminary virtual image;

and identifying the position information of the plurality of preliminary feature position base points in the processing requirements of different design types, wherein the position information is the feature position base point information in the processing requirements of different design types.

Still further, the preliminary feature location basis points are not less than 3.

Compared with the prior art, the method and the device have the advantages that the proper design data processing platform is selected according to the design processing requirements, so that the targeted processing of different design processing requirements is realized, and the problem of the collaborative design of various software of complex municipal traffic engineering is solved.

Drawings

FIG. 1 is a system block diagram of an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution of the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments.

The embodiment of the invention discloses a forward design method of municipal traffic engineering in a complex environment of a hub airport, which comprises the following steps:

the method comprises the steps of carrying out information analysis on current design operation and determining a corresponding design processing requirement type;

the method comprises the steps of determining a corresponding design processing requirement type, calling a matched design data processing platform, and performing corresponding processing by using different design data processing platforms so as to meet design processing operation;

The data after design processing is subjected to format unification processing to form a unified format, so that the data with different design types and processing requirements can be conveniently combined later to form a unified big data packet.

According to the embodiment of the invention, the proper design data processing platform is selected according to the design processing requirements, so that the targeted processing of different design processing requirements is realized, and the problem of the collaborative design of various software of complex municipal traffic engineering is solved.

Optionally, the performing format unification processing on the data after the design processing to ensure that the data format exported by each design data processing platform is the same includes:

In particular, the preset data format is IFC.

The format unification processing platform is used for performing format arrangement on the data after design processing to form a unified data format.

Optionally, as shown in fig. 1, the plurality of design data processing platforms are respectively:

the first design data processing platform is a multi-dimensional road software, and can realize BIM forward design and engineering quantity auxiliary measurement of complex road engineering, traffic engineering (without traffic pipelines) and lighting engineering (without lighting pipelines);

the second design data processing platform is used for processing water supply engineering, drainage engineering, lighting pipelines, traffic pipelines, electric power engineering, communication engineering and pipeline comprehensive engineering;

The second design data processing platform is pipe standing software, and can realize BIM forward design and engineering quantity auxiliary measurement of various pipeline projects such as water supply and drainage projects, electric power projects, communication projects, traffic engineering pipelines, illumination engineering pipelines and the like;

The third design data processing platform is Midas CIM, and BIM forward design and engineering quantity auxiliary measurement of complex bridge tunnel engineering can be realized.

Optionally, the processing procedure of the design data processing platform includes:

classifying and identifying the current design processing requirements;

taking the design of municipal engineering matched with an airport as an example, in the airport design process, various professional designs such as urban road design, traffic engineering design, bridge-tunnel engineering design, water supply and drainage engineering design, strong and weak engineering design and the like are required, so in the design method of the embodiment of the invention, the design processing requirements are required to be classified and identified, the specific corresponding processing types are determined, and then the corresponding software is called;

Extracting design elements from the design processing requirements, and further determining the design content to be processed by the current design processing requirements;

the method comprises the steps of carrying out content identification and planning on design elements and design processing requirements, so as to form a design plan capable of meeting the design processing requirements;

workload estimation is performed based on design planning;

the method comprises the steps of carrying out workload prediction on a design plan to form specific workload capable of realizing the design plan, and facilitating the reality assessment of staff;

And packaging the design elements, the design processing requirements and the workload prediction to form a complete data packet, so that the subsequent format unified processing and integration are convenient.

The processing procedure of the embodiment of the invention when processing the processing requirements of different design types is as follows:

1. road engineering type design processing requirements

1.1 Creation of models

The embodiment of the invention starts the multidimensional road software to carry out BIM forward design of the road model, the basic flow is similar to the traditional road design, the rapid construction of the road foundation model can be realized through flat, longitudinal and transverse designs, and the complex special-shaped plate can be created through the function of a free plate. And carrying out high Cheng Dian and contour line identification based on a two-dimensional topographic map, generating three-digit digital-analog topography through triangle network construction, and then carrying out road slope releasing and other designs. And finally, the component design function is used for supplementing road accessory facilities such as a vehicle stopping column, a tree pool, guardrails, an anti-collision wall and the like, so that the BIM forward fine design is realized. The BIM forward design of the road engineering in the embodiment of the invention is specifically as follows:

(1) Planar design

The planar wiring is consistent with the traditional road design software (EiCAD, hongjingjingjingjingjingjingji) and can be designed by free wiring through a wire method, and CAD drawings or project files of EICAD and Hongjingjingjingjingjingjingjingjingjingjing can be directly imported for identification.

(2) Longitudinal section design

a. Extracting natural elevation from digital-analog of topography

And opening a topographic map in a CAD corresponding format in the topographic map functional module, identifying Gao Chengdian and contour lines to generate a three-dimensional digital model, removing the elevation points of partial abnormal elevations to obtain an accurate topographic digital model, and automatically extracting natural elevations according to the line positions by software.

b. Longitudinal section slope

The vertical curve design is consistent with the traditional design software, a longitudinal slope adjustment mode of various modes such as elevation, pile number, gradient, pile number and the like is provided, parameters such as road surface elevation, vertical curve radius, gradient slope length and the like can be displayed in real time and can be modified at any time, meanwhile, a circular curve (light blue area) and a buffer curve (pink area) of a flat curve are distinguished by colors, and the flat-pack vertical and other linear combined designs are convenient to carry out.

(3) Design of cross section scheme

The scheme of the cross section plate is designed in a segmented mode according to road width requirements, the center line position is well defined, the widths and the gradients of the sidewalk, the non-motor vehicle lane, the motor vehicle lane and the like are reasonably arranged, proper kerbstone and curb heights are selected, proper materials are selected, and the final section is determined by checking in a preview image.

(4) Road segment drawing inspection

And selecting the established plate scheme in the route to draw the road section to obtain an actual three-dimensional model of the road section, and performing elevation inspection on the rotary model to intuitively modify the unreasonable horizontal and vertical design.

(5) Ultra-high widening design

And (3) carrying out ultra-high widening design according to the design linear index, selecting a proper ultra-high widening mode, a proper numerical value and a proper start-stop pile number, and updating the road model in real time to check the rotation condition of the road surface plate.

(6) Special-shaped plate design

The special-shaped plate is designed by using free plate functions aiming at non-standard sections such as widening of a roadway or narrowing of a green belt, the special-shaped plate is firstly drawn in a two-dimensional view port, the special-shaped plate can be drawn in CAD for a particularly complex shape and then led in again, then road plates with corresponding structure thickness are generated by using the free plate functions, elevation of corner points is modified to connect adjacent plates, and finally the internal overlapped part is dug by using a hole digging function to obtain the final special-shaped plate result.

(7) Vertical design of intersection

The method comprises the steps that a simple intersection creation and modification function is provided in the multi-dimensional software, parameters such as a contour line and a lowest point cannot be conveniently adjusted, a hole digging function cannot be achieved in the generated intersection, the vertical design of the intersection in the forward design is performed by adopting traditional municipal road design software in consideration of the complexity of a T3 project, the generated contour line is imported in a form of a topographic map, and the topographic map is converted into a road free plate to achieve accurate modeling of the intersection.

(8) Slope design

The design of the side slope is similar to the cross section design, the design of the side slope scheme is needed to be firstly made, various parameters such as the gradient of the side slope and the dimension of the side ditch are set, the modularized design mode is supported by the multi-dimensional software, and the components can be conveniently and freely deleted and added. After the design of the component scheme is completed, various slope releasing modes such as free slope releasing, fixed-height slope releasing, fixed-distance slope releasing and the like can be selected, and finally, unreasonable modification places are checked according to the generated slope model.

(9) Component design

For independent components attached to roads, such as a tree pool, a vehicle stop column, a pedestrian guardrail, a waveform beam guardrail and the like, a component library function is built in the digital-dimensional software, some general components such as the tree pool can be directly called and simply modified, and complex components such as the waveform beam guardrail can be freely designed through a component design module. The component free design function is similar to the component design in the Revit software and can be realized through six steps:

a. selecting a template setting category

The component is set by selecting an appropriate template according to the component to be created.

b. Creating a shape

And drawing and rotating the drawn plane base diagram to generate a body according to the principle of moving surface forming.

c. Adding constraints

Distance constraint, parallel constraint, alignment constraint and the like are added to different shapes and planes to keep the model stable, so that the previously generated shape is not affected when the complex component is drawn.

d. Creating and binding parameters

And establishing relevant parameters such as length, width, height and the like according to the components and binding.

e. Drive parameters

The complex components may be formed by combining several sub-components, for example, the guardrail is divided into two components of a column and a rail, and connection positions, introduction base points and the like are required to be set for the separately created components to drive related parameters.

f. Achievement loading

The generated components can be used only by loading and defining component categories in the multidimensional software, the single-body components such as tree pools, vehicle stop columns and the like can be directly called, and the complex components such as guardrails which are divided into sub-components such as upright columns, transverse columns and the like can be used only by creating component schemes. The software supports various component arrangement modes such as free arrangement, equidistant arrangement along the line and the like, and can carry out operations such as elevation modification, movement, rotation and the like on the components.

1.2. Engineering quantity statistics

(1) Road engineering quantity

In the 'multi-dimensional road-graph-road engineering quantity' module, the calculation and the derivation of the road engineering quantity can be realized, the function can respectively count according to different road routes, and the engineering quantity table of each road can be derived.

(2) Engineering quantity of component

The user can select the statistical area through the frame to derive the engineering quantity of all road components in the range.

(3) Input of a component information table:

different components (including pavement structure layers and the like) are classified, grouped and encoded, a construction information table is built into the multidimensional software, and each component attribute of the finally generated model is provided with a corresponding component code.

2. Traffic engineering type design processing requirements

2.1. Creation of models

The design content of the traffic engineering of the embodiment of the invention comprises traffic sign marking design, signal control design, water rain condition system design and other traffic safety facility design. In the digital road design software, traffic engineering design contents such as traffic sign boards, traffic sign lines, traffic sign bars, traffic signal lamps, water and rain condition LED information boards and the like can be created through the sign lines and the component library modules.

(1) Traffic sign modeling

In the module of 'the multi-dimensional road design software-the mark marking-the mark layout', the mark can be custom designed in a parameterized definition mode.

Taking the road indicating sign as an example, a sign can be newly built in the sign layout-road indicating sign- (road 1) intersection forecast, and the attributes such as name, width, height and the like of the newly built sign are edited and designed.

Editing and designing the shape and the size of the mark layout, the lining, the frame, the mark layout, the direction indication and other attributes through a bottom plate and frame module; and editing and designing contents such as Chinese text, english text, arrow pointing and the like of the mark layout through a graphic and reference module.

Thus, the self-defining design of a road indication mark layout can be completed. The other mark layout operation modes such as warning marks, forbidden marks, indication marks, auxiliary marks and the like which need to be customized are similar to the operation modes.

(2) Traffic marking modeling

In view of the fact that the marking function of the current multi-dimensional road design software is mainly oriented to the conventional municipal road, and compared with the conventional municipal traffic engineering, the airport municipal traffic engineering is more complex in road route design, traffic organization and the like, so that the marking design module of the software is difficult to apply. In the module of the 'multi-dimensional road design software-marking-marking tool', marking modeling can be realized through the 'two-dimensional marking introduction' function. The specific modeling flow is (taking the field in-out loop as an example):

1) Dividing the road modeling plate into plates in CAD to finish drawing the marked line according to the division of the road modeling plate;

2) Clicking the 'imported two-dimensional mark', selecting a mark CAD file to be imported, and entering an imported two-dimensional mark setting interface;

3) And (3) importing the two-dimensional marking interface, selecting a road on which the marking is positioned, selecting a marking layer needing to be imported into the model, and clicking for confirmation after finishing the selection setting, so that the two-dimensional marking can be imported into the model.

The marking modeling of one road plate block can be completed through the operation, and the marking modeling of the rest road plates is the same as the operation.

(3) Traffic sign bar modeling

The traffic sign bar belongs to a component in the multi-dimensional software, and modeling is needed in the multi-dimensional component design software. The following describes the modeling process of the traffic sign bar by taking an L-shaped cantilever bar as an example:

and creating corresponding shape modules (upright posts, cantilever rods and foundations) according to the external dimensions and functional requirements of actual equipment, and setting corresponding constraint parameters through tools to obtain corresponding component models.

After the component design is completed, the component model actually required can be obtained by editing the attribute values such as the geometric dimension of the component through the constructed attribute editing interface in the multi-dimensional road design software.

The modeling and application of the L-shaped cantilever marker link can be completed through the operation, and the modeling and application of the rest traffic marker links are similar to the operation.

(4) Modeling of traffic equipment on rod piece

The traffic equipment arranged on the traffic rod comprises traffic signal lamps, traffic monitoring equipment, water and rain condition LED information boards and the like. The modeling process of the traffic equipment on the rod piece is described below by taking a water rain condition LED information board as an example:

The traffic devices arranged on the traffic bars belong to components in the multidimensional software and need to be modeled in the multidimensional component design software. And creating a corresponding shape module according to the external dimension and the functional requirement of the actual equipment, and setting corresponding constraint parameters through a tool to obtain a corresponding component model.

Through the operation, modeling and application of the traffic equipment arranged on the traffic rod can be completed, and modeling and application of the traffic equipment arranged on the traffic rod are similar to the operation.

2.2. Engineering quantity statistics

In the module of 'digital road design software-marking line-engineering quantity', the functions of marking line area statistics and marking quantity statistics are utilized to realize the engineering quantity statistics of marking lines. The function is respectively counted according to road blocks, namely the statistics of road mark lines is counted according to road blocks, and the following is the engineering quantity which takes a field in-out loop as an example and is counted through software.

In the 'digital road design software-component library-component statistics' module, the engineering quantity of all components in the range can be derived by selecting statistical areas through frames.

3. Lighting engineering type design processing requirements

3.1. Creation of models

According to the embodiment of the invention, the street lamp is established on the road model through the multi-dimensional road product, and because the main road and the auxiliary road are arranged and are influenced by the widening of the inlet and the outlet, the street lamp is arranged in a non-strict central line alignment mode, and the street lamp cannot be arranged in shortcut modes such as along the road, along the separation belt, along the inner side of the sidewalk, along the line and the like in the multi-dimensional software; and the street lamps arranged in the parking lot and the east-west side entry and exit lot are high-pole lamps, and are not greatly related to the road side lines, so that the street lamps are arranged at will in the street lamp arrangement mode in the digital software so as to meet specific requirements.

The street lamp is in a customized mode, and software is required to be used for creating street lamp components: for components that are not in the component library, the components are created by means of "component library-design component-generic component-point component" in software. The main components of the components to be created need to be known before the components are created, for example, the main components of the street lamp are a lamp, a lamp post and a foundation. The street lamp component is created by taking care of selecting the insertion point of the component, and the insertion point of the street lamp is selected at the ground. The components are then created by the order of "set component parameters-assign component parameters-draw parameter planes" and finally used by the "component library-load component" in the software.

For components present in the component library, the street lamp parameters required for the project can be set by editing the "type attribute". After the street lamps are randomly arranged in the plane, clicking the attribute panel after selecting the street lamps, and creating street lamp components required by the project by editing component types and attribute lists.

3.2. Engineering quantity statistics

The engineering quantity of the arranged components can be counted in a one-key way through component library-component statistics in software.

4 pipeline engineering type design processing requirements

4.1 Creation of models

The pipeline engineering part establishes a water supply and drainage pipeline model, an electric pipeline model, a communication pipeline model and a traffic pipeline model through pipes. The pipe setting software is internally provided with design specifications and templates of related professional pipelines, a designer can newly establish a pipe or quickly identify an old pipe and then modify the old pipe, and a pipeline model and a two-dimensional drawing are synchronously drawn in the pipe setting process to obtain the pipe setting software. The creation mode supports the functions of quick pipe drawing such as interactive pipe arrangement (direct pipe drawing), automatic pipe arrangement (software self-animation pipeline according to conditions), pipeline copying, multi-pipe arrangement along the road and the like, and the full-automatic joint number of a pipe drawing process system can automatically modify the number of the existing node according to requirements when the nodes are increased or decreased. If the simple CAD design is used, a designer spends a large amount of time drawing two-dimensional drawings, secondary modeling is also needed, and the forward design requirement is not met. The tube establishment process comprises the following steps: basic parameter setting (pipe well attribute), pipe well plane position setting, vertical data input, three-dimensional model generation, pipeline comprehensive collision analysis and collision pipeline modification.

The main contents established by adopting the tube stand software in the embodiment of the invention are as follows: rainwater pipelines, sewage pipelines, water supply pipelines, reclaimed water pipelines, rainwater and sewage lifting pump stations, drainage outlets of drainage ditches (established by adopting surface drainage channels), auxiliary facilities of outdoor water supply and drainage pipelines, electric pipelines and wiring wells, communication and traffic pipelines and wiring wells and the like. And assigning values to all pipeline values, such as the gradient, the interface form and the pipeline base form. And assigning values to the natural ground elevation, the design ground elevation, the node specification and the fire hydrant specification of all the nodes. The assigned pipeline and node can be directly converted into two-dimensional to three-dimensional and three-dimensional checked and edited by the software on the pipe.

4.2. Pipeline integration and collision

After the preliminary layout of the pipelines is completed, software prompts whether the spatial distance of the pipelines between different two professions or among a plurality of professions accords with the regulation of related specifications or whether the pipelines collide or not through the collision detection analysis function and the pipeline comprehensive detection function of the pipe. If the space distance is smaller than the standard shortest distance or the direct collision occurs between pipelines, software prompts a designer to carry out modification and adjustment through the color highlighting of the position, so that the model meets the standard requirements. And the cross elevation of the visual pipeline is interactively determined. The pipeline cross elevation interactive determination, cross marking and cross point vertical distance meter can also visually display the pipeline cross collision condition. After adjustment and optimization, the vertical distance table also supports automatic updating.

4.3. Engineering quantity statistics

Because the pipeline engineering model is established to assign parameters such as pipeline, connection mode, foundation, node information and the like, engineering materials can be counted by one key by drawing a result table of pipe standing software, and the material table can be drawn on a drawing plane or established to an EXCEL table. The statistical principle can be provided with requirements, the statistical material mode is set, and the nodes and the pipeline lengths which do not need to be counted are eliminated.

5. Bridge tunnel engineering type design processing requirements

5.1. Creation of bridge model

The embodiment of the invention takes Guangzhou white cloud international airport second station land side municipal traffic system engineering as an example, and the engineering comprises two city bridges which are respectively: the embodiment of the invention provides a departure viaduct and a return ramp bridge, which are described in detail in view of the complex creation of a departure viaduct model.

5.1.1. Bridge profile

The combination of the overpass of the departure port is as follows: the first tie 25.2+30.3+36.9+25.2=117.6 m prestressed concrete continuous beam+the second tie 28.51+48.796+55.436+34.944= 167.686m steel box girder+the third tie 32.033+46.65= 78.683m prestressed concrete continuous beam+fourth tie 48.3+50.85+48.3= 147.45m prestressed concrete continuous beam+fifth tie 46.65+32.095= 78.745m prestressed concrete continuous beam+sixth tie 45.887+56.471+44.465+28.525= 175.348m steel box girder+seventh tie 25.2+36.9+30.3+25.2=117.6 m prestressed concrete continuous beam= 883.112m.

The viaduct adopts a head expanding pier, the column section takes a hexagonal section as a basic section form, and the length of the variable section transition section is 2.6m.

5.1.2. Overall modeling thought

Based on point groups and line groups, the assembly groups are formed, the assembly groups are matched with independent components to form a structural foundation modeling unit, and the special bridge design functions (height-changing, width-widening and the like) and the special bridge detail component design functions (reinforcing steel bars, steel bundles, reinforcing ribs, transverse partition plates and the like) are realized in a structural self-adaptive road line data (flat curves, vertical curves, superelevation and the like) mode to realize the forward bridge design.

5.1.3. Route creation

The Midas/CIM software is provided with a basic route creation-editing function, and data such as a flat curve, a vertical curve, section division, a transverse slope and the like are input to generate a route, and the input of Midas/CIM about route data can be realized by introducing weft, EICAD data and the like. After the route in Midas/CIM is established, the point family, the line family and the assembly family can adapt to the route, and the structural form is correspondingly adjusted along with the curve change and the transverse slope change of the route.

5.1.4. Concrete box girder creation

(1) Equal width box girder creation

Creation-entry of line family patterns by basic > line family > in Midas/CIM software, creation of constraint faces, constraint paths, and path components in line families from default paths, start reference faces, and end reference faces. The created constraint surface is positioned at the change of the cross section of the box girder, such as the change of the thickness of the cross beam and the web plate of the box girder. The created constraint path is used for positioning the box girder anti-collision wall. When the path component is created, the cross sections of the box girder cross beams, the thickened parts of the web plates and the standard cross sections are defined first, and the path component can be generated after the cross sections are distributed to different paths.

(2) Creation of heightened and widened box girder

The height-variable and width-variable box girder is realized by functions such as cross section parameterization, parameter linkage, constructors, variable cross section groups and the like in Midas/CIM software. The section parameterization needs to create a reference line, basic parameters and constraint parameters, matches the parameters and dimension labels, sets a change rule of the beam height according to the constraint surface control on the beam height in a construction function, and finally creates a path component through a variable section group to realize the creation of a variable height and wide beam model.

5.1.5. Steel box girder creation

Creation-entry of line family patterns by basic > line family > in Midas/CIM software, creation of constraint faces, constraint paths, and path components in line families from default paths, start reference faces, and end reference faces. The created constraint surface is positioned at the change of the section of the steel box girder, such as the thickness change of the top plate and the bottom plate. When the path member is created, the standard section, the top plate thickened section and the bottom plate thickened section of the steel box girder are defined first, and the path member can be generated after the steel box girder is distributed to different paths.

The steel box girder top-bottom plate and web stiffeners are created in Midas/CIM software through a basic > line family > model > stiffener > drawing mode, and the top plate U ribs, bottom plate and web I ribs are created by defining the attributes of the stiffeners.

The steel box girder diaphragm plates and the girders are established in a point family mode, and the diagonal girders are arranged in the embodiment of the invention, so that standard girders cannot be established in a self-adaptive route mode and are realized through functions of curved surface cutting, expansion and the like.

5.1.6. Box approach and cantilever retaining wall creation

The variable-height box-shaped guide way in Midas/CIM software is realized through functions such as cross section parameterization, parameter linking, constructors, variable cross section groups and the like. The section parameterization needs to create a reference line, basic parameters and constraint parameters, matches the parameters and dimension labels, controls the change rule of the height according to the constraint surface by the height of the box-shaped guide way in a construction function, and finally creates a path component through a variable section group to realize the creation of the variable-height box-shaped guide way. The cantilever type retaining wall has simpler section form and change rule, and can directly adjust the height parameter of the retaining wall without setting a construction function to realize the modeling of the parameterized cantilever retaining wall.

5.1.7. Bridge pier, bearing platform and pile foundation creation

In Midas/CIM software, a point group mode is created and entered through basic > point group >, a pile foundation and a bearing platform can both build a geometric body in a cross section expanding mode and convert the geometric body into a component, and the geometric body is generated through cross section lofting and converted into the component due to the variable cross section of the pier top section.

5.1.8. Creation of auxiliary structures such as bridge deck pavement (laminated layer), anti-collision guard rail and the like

Creation-entry of line family patterns by basic > line family > in Midas/CIM software, creation of pavement layers (superimposed layers) and crash barrier path members in line families according to default paths, start reference planes and end reference planes.

5.2. Engineering quantity statistics

The engineering quantity statistics were performed with reference to the above examples.

6, tunnel engineering type design processing requirements

6.1. Engineering overview

The tunnel engineering of the embodiment of the invention is divided into 7 tunnels by combining structural plate subdivision, and the tunnels are respectively a main approach tunnel, an east side auxiliary approach tunnel, a building front underpass tunnel, a west-to-north ramp tunnel, a north-to-west ramp tunnel, a business district loop tunnel and a business access loop tunnel.

6.2. Modeling process

(1) Defining a route

The route function gives the structure the capability of adapting to the road route change, and the change of a flat curve, a vertical curve, a transverse slope and the like can be automatically considered. In addition to the input parameters, CIM software also supports methods such as importing weft-ground data, EICAD data and the like to import routes. Taking a business area loop small mileage tunnel as an example, a route parameter definition process is shown.

(2) Defining a flat curve

The business district loop is connected with the main approach path straight line section in front, and the tunnel section comprises two circular arc sections which are connected by three relaxation curves. And after the parameters such as the type, the length and the like of the flat curve are defined in the parameter table, the definition of the flat curve can be completed.

(3) Definition of vertical curves

The vertical curve of the loop tunnel section in the business area has longitudinal slope change, the longitudinal slope change section changes in a parabolic mode, and the definition of the vertical curve can be completed by inputting parameters.

(4) Definition of transverse slope

The line grade is changed twice to adapt to the flat curve. Filling the software with the pile numbers of the variation points of the transverse slopes and corresponding numerical values of the transverse slopes to finish definition of the transverse slopes.

(5) Definition of segments

The pile numbers of the loop small mileage side tunnels in the airport environment business area are 228.500 and 280.000 respectively, and the structure is orthogonal to the route. The loop pile number 116.021 of the business district is the initial section of the main entrance tunnel irregular plate. A segment segmentation point is defined herein for the modeling of the profiled plate segments.

And thus, the route definition of the business area loop small mileage tunnel section is completed.

6.3. Definition of a Point family

The point families of CIM software are arranged in the model in a point positioning mode, and for a tunnel structure, the components such as a pump station, a pile foundation, a side wall cross brace and the like are suitable for being arranged in the point family mode. In addition, some models imported from other software are also suitable for being distributed into the models in the form of point families, so that editing and management are convenient.

(1) Establishing a point family in a model

Taking a D100cm uplift pile point group as an example, a process of constructing the point group in the model is introduced.

There are several ways to build the desired cross-sectional layout, respectively, insert template cross-section, insert CAD cross-section, multi-section line drawing cross-section, etc. A template cross section is used here.

And drawing an auxiliary line by the distribution section, and distributing the section of the bearing platform and the section of the pile foundation along the auxiliary line.

After the binding constraint point component is established, constraint points are generated and bound, and the point family construction is completed. The multi-point constraint is selected to realize the parameterization adjustment of the pile length.

(2) External model introduction forming point family

CIM software supports the introduction of various format models, and takes a tunnel pump house penetrating down in front of a building as an example, the function of forming a point group by introducing an external model is introduced.

The tunnel pump room is drawn by AutoCAD software, and CIM software can support direct importing of dwg format files. After the definition of the point family is completed by binding the component with the constraint point after the definition is imported.

6.4. Definition of line groups

The trend of most tunnel structures is based on routes, and after the tunnel structures are distributed into the routes through a model established by a line family, the tunnel structures can adapt to the parameter changes such as a flat curve, a vertical curve, a transverse slope and the like of the routes. The family of lines is therefore important in the establishment of the tunnel BIM model. The lining structure, pavement structure, drainage structure, anti-collision wall, sidewalk and other structures of the tunnel are suitable for being built by line families. 52 different groups of lines are defined and applied in the tunnel model in the embodiment of the invention. Taking a tunnel passing down before a building as an example, the establishment process of a tunnel line group is introduced.

The front underpass tunnel consists of two open sections and one closed section, and the open sections are cantilever retaining wall structures. The thickness of the retaining wall structure, the height of the wall, the slope of the outer wall of the wall and the like all change along the route. The parameterized section modeling is adopted, and the change rule of the tunnel retaining wall structure is controlled through parameters.

(1) Establishing a cross section

The basic section of the retaining wall is formed by introducing dwg files.

(2) Defining vertex groups

The cross section of the attached line family can enable the defined vertex to change the vertical height along with the transverse slope parameter of the route by defining a fixed point group. For the section of the cantilever retaining wall of the tunnel, all nodes of the bottom plate are changed along with the transverse slope of the route.

(3) Defining parameters

Before the section parameters are defined, the regular side lines of the section are required to be constrained, and the section is required to be constrained by the horizontal side, the vertical side, the section fixing point, the inclined line and the overlapping line thereof. Taking horizontal constraint as an example, a line segment after the horizontal constraint is defined, and the endpoints of the line segment are all kept at the same height.

After defining the constraints, the structure size needs to be annotated. CIM software provides vertical dimension, horizontal dimension, etc. labels.

After the dimension marking is completed, the section parameters are defined. The section needs to define parameters such as the height of the left wall and the right wall, the width of the toe, the plate thickness, the inclination angle of the left wall and the right wall, and the like. And connecting the defined parameters with the labels, and after the labels are linked, the cross section size can be changed by modifying the parameters, and the parameters do not need to be defined and connected if part of the label size does not need to be changed.

The definition of the parameterized cross section is completed.

(4) Distribution cross section

The line groups can change the length along with the distribution path, thereby achieving the aim of recycling. Since this tunnel line family is distributed only on one route and the segment division is more. The line length is thus modified to the actual length prior to dispensing to match the post-dispensing dimensions.

According to the change rule of the section, the line group is divided into 9 sections.

The constructors in the family of lines may link several parameters of one or more different parameterized cross sections, and the variation of the cross section parameters may be controlled by defining the law of variation of the constructors. Parameters in the line family are defined in a constructor mode before the cross section is allocated. Wall height, total tunnel width, toe, thickness, etc. dimensions are defined herein. And inputting function change forms such as construction function values, straight lines, parabolas and the like at different control points.

After the constructors are defined, parameterized sections are assigned. Since the constructors are defined in advance, the linked cross-section parameters will automatically change with the constructors.

The definition of the parameterized section line groups is thus completed.

For a general family of wires, a single cross-section may be used directly, or the family of wires may be defined in multiple variable cross-sections. The auxiliary structures such as the drainage ditch, the anti-collision wall, the pavement structure and the like of the section of tunnel are defined in the form of a uniform cross-section line group.

6.5. Definition of Assembly families

The operating logic of the assembly family is similar to that of the wire family. Unlike the family, the family can integrate the family, and other types of components and set parameters for the distribution route. The definition process of the assembly group is introduced by taking a small mileage open section of a tunnel penetrating down before a building as an example.

(1) Distribution line group

When modeling the tunnel structure line group, the center line and the structure center are opposite to each other. The allocation of the assembly families is based on the road design line due to the 0.95m deviation between the front-building underpass tunnel road design line and the structural center line. Therefore, before the group of distribution lines is assembled, the offset between the road design line and the central line of the structure is found out.

The fitting group length is first set to the segment actual length 131.7m.

And (3) respectively shifting (-0.95, 0) and (-0.95, -0.6) by taking a default constraint line as a reference, generating two main constraint paths, and respectively distributing a tunnel auxiliary structure line group and a tunnel main structure line group.

The sections in the tunnel appendage line groups and the body structure line groups each define a vertex group. In the case of the line group distribution assembly group, the line group section variable form is set, and the deformation is selected. After the setting, when the line group distributes routes along with the assembly group, the vertex group can deform along with the transverse slope of the routes.

(2) Distribution point family

The tunnel segments are provided with 4 rows of uplift piles adjacent to the closed segments, the uplift pile point families having been previously defined. The point families need to be assigned to the assembly families at this time.

The distance between the left and right groups of anti-pulling piles is 14.0m, and the positions of the head and tail anti-pulling piles are taken as endpoints, and a main restraint path is created by respectively decentering (6.1, -1.4) and (-7.9, -1.4). And 4 array constraint points are respectively arranged in the newly-built main constraint path at equal intervals. And distributing the uplift pile point family to the array constraint points to complete the creation of the uplift pile model.

(3) Distribution Assembly family

After the creation of the assembly family is completed, the next step is to assign the assembly family to a route. The tunnel is divided into three sections. The small mileage open section created above corresponds to the first section.

The line-to-assembly family modeling process is all modeled along a straight line. After the route is distributed, the structure bends along with the route, and adapts to the flat curve and the vertical curve. Since the route defines a lateral slope, the family of line sections are provided with a set of vertices. The vertex group deforms along with the lateral slope of the route. If the route of the structure is adjusted, only the route parameters need to be modified, and the structure is deformed along with the route adjustment.

6.6. Modeling of special-shaped structure

The tunnel has several diverging segments, which cannot be directly modeled by existing software. According to the tunnel bifurcation section provided by the embodiment of the invention, the route function of the software is utilized, the basic model is exported and then processed by utilizing AutoCAD software, and finally CIM software is imported and component information is given to complete modeling of the bifurcation section.

Taking the branching section of the main approach tunnel as an example, the modeling process of the special component is introduced. The main approach path branching section comprises 5 sections of routes, including a main approach path line, a large mileage side of a business district loop line and a large mileage side of an entrance and exit loop.

And analyzing the bifurcation section of the main approach path, wherein the tunnel bottom plate is controlled by 4 groups of paths, the intersections of the bottom plates of different areas have height differences, and the width of the intersection area is 1.0m. Because all tunnel routes are established in the model, the bottom plates and the side walls on the left side and the right side are controlled by the in-out loop route, and the middle two bottom plates are controlled by the business thing loop route. And 4 line families of the routes are established in software, the side walls are changed in a variable cross section mode according to the change rule of the wall heights, and the bottom plate is formed by equal-thickness plates. The length of the base plate member extends a distance to ensure that the intersection width of adjacent base plates is greater than 1.0m.

The two groups of line groups are provided with vertex groups, and the nodes adapt to the transverse slopes of the routes. The auxiliary line families are allocated into the bifurcation segment routes.

After the dispensing is completed, the component is exported. CIM software supports direct export of dwg format files.

After the dwg file is exported, the model editing of the bifurcation segment is completed by utilizing the three-dimensional editing function of the AutoCAD.

After the editing of the bifurcation segment entity model is completed, the component is imported into CIM software. In order to facilitate classification management, a main approach bifurcation point family is newly built in the CIM. The entity model is imported in the point family, and the editing of the component information is completed, so that the entity model can be distributed into the whole model. The appendable construction of the bifurcated segment may also utilize route functions to accomplish solid modeling and editing.

6.7 Input of bridge-tunnel engineering component information

The CIM software can give information to the components, and after the BIM common format ifc is exported, other software supporting the file format can import model components and component information thereof through importing the ifc format model. The component information includes hierarchical information, specification information, component names, component textures, and the like.

(1) Defining hierarchical trees

CIM software supports the assignment of hierarchical information to components, which can be managed within the software by hierarchical trees. After the model is exported, other software can read the component grading information, and the management and metering requirements of multi-specialty die closing are met.

Before BIM modeling is carried out, each specialty unifies a component numbering method. And the bridge and tunnel profession refines according to a unified numbering method to finish the information classification and numbering of the bridge and tunnel components. CIM software supports manual compiling of the hierarchical tree, and Excel tables with corresponding specifications can be imported to complete definition of the hierarchical tree.

(2) Assigning ranking information

After the definition of the hierarchical tree is completed, hierarchical information needs to be given to the building blocks. The allocation function of CIM software supports batch allocation of hierarchical information.

After selecting the "assign" tab, select "common" - "rank", and then select specific ranking information and corresponding components. Such as the east side auxiliary approach tunnel body structure, this hierarchical item is located in level 7, with the number automatically corresponding to 14-83.01.15.01.0001.0003. After the click is determined, grading information can be given to the corresponding component.

(2) Inputting specification information

The CIM software can endow the components with specification information, and meet the requirement of component quantity statistics while perfecting model information. CIM software mainly provides two material specification types of concrete and steel bars. Default support member name and material name of concrete material specification; the steel default support member name, material name, plate thickness, and other information. In addition, the member is provided with customizable specification information such as the content of the concrete material.

For the same specification information, after specification information of each component is defined, the component classification information may be given in batch by referring to the component of which specification has been defined by the "distribution" function.

6.8. Bridge tunneling engineering quantity statistics

After the grading and specification information of the components are defined, the software supports directly exporting the engineering quantity. The "apply-apply" tab is selected and the post-construction treatment mode is entered.

Selecting a template button and editing the engineering quantity templates. The quantity meter can output three specification information, and for concrete components, three information of component names, component materials and reinforcing steel bar content are defined.

Next, an engineering quantity table is created, where the components are selected to be classified according to the component classification information. And finally, exporting an engineering quantity table.

After the engineering quantity table format is set, the derived quantity table is already distinguished according to the grading information.

Specifically, the combining the data after the unified processing of each format to form the combined data includes:

processing the data subjected to the unified processing of each format to form a 2D and/or 3D virtual image; for example, road engineering, traffic engineering, lighting engineering, water supply engineering, drainage engineering, lighting pipelines, traffic pipelines, power engineering, communication engineering, pipeline comprehensive engineering, bridge engineering, tunnel engineering, etc. may be 3D-converted to form a 3D virtual image;

the method comprises the steps of extracting characteristic information of municipal traffic engineering design processing requirements, determining main processing requirements of the current municipal traffic engineering design, such as position, size, depth and the like, wherein before actual design, specific field area and functional requirements are basically determined, and a designer is required to perform more specific design based on the requirements; based on the characteristic information, the corresponding building area, functional area planning and the like of municipal traffic engineering design processing requirements can be preliminarily determined by the method provided by the embodiment of the invention, so that one or more characteristic position base point information can be obtained;

the method comprises the steps of identifying characteristic position base point information, and finding common position information among all design types, so that the relative positions of virtual images of all design types are determined; for example, road engineering includes a sidewalk area, a roadway area, bridge engineering includes information such as pedestrian overpasses; however, in order to facilitate the use of people, the pedestrian overpass of the bridge engineering is overlapped with the pavement area, and at the moment, a common characteristic position base point between the road engineering and the bridge engineering is generated at the pedestrian overpass, so that the positioning of virtual images of the road engineering and the bridge engineering can be realized through the characteristic position base point;

the same characteristic position base points of all design types are overlapped to form a virtual image combination diagram, so that fusion of the schemes is realized;

The virtual image combined graph is subjected to integral format conversion to form unified combined data, and the data is not simply packaged, so that a user can intuitively identify the corresponding position of the corresponding data.

In particular, the overlapping the same feature position base points in each virtual image to form a virtual image combined graph includes:

overlapping the same characteristic position base points in the virtual images;

the embodiments of the present invention default to use the corresponding size of the specific design type project as the default display hierarchy ranking (when multiple designs are superimposed at the same position, the display of the high display hierarchy, the hiding of the low display hierarchy), for example, the road project and the traffic project are large in size as the high display hierarchy, while the lighting pipeline, the traffic pipeline and the power project are small in size and are in the building at multiple positions, and are in the low display hierarchy; the person skilled in the art can select the display level according to the actual demand of the person;

The 3D virtual image is fitted and displayed on the data subjected to unified processing of each format according to the display hierarchy, so that a user can conveniently select and display according to different display hierarchies, for example, when the user needs to acquire surface hierarchy information, the user can acquire related designs such as a designed road and the like through selection, and when deep information is acquired, the user can acquire pipeline related information such as power engineering and the like through selection.

In particular, the feature information extraction is performed on the municipal traffic engineering design processing requirements to obtain one or more feature position base point information, including:

the method comprises the steps of extracting characteristic information of municipal traffic engineering design processing requirements, determining main processing requirements of the current municipal traffic engineering design, such as position, size, depth and the like, wherein before actual design, specific field area and functional requirements are basically determined, and a designer is required to perform more specific design based on the requirements; based on the characteristic information, the corresponding building area, functional area planning and the like of municipal traffic engineering design processing requirements can be preliminarily determined by the method of the embodiment of the invention, so as to form a preliminary virtual image;

taking an airport as an example, determining a doorway of a waiting room in a preliminary virtual image, wherein the position of the doorway is the junction of a road engineering, a traffic engineering and a lighting engineering, and the position can be used as a preliminary characteristic position base point; the position of the airport reservoir is the junction of the water supply project and the water discharge project, and can be used as a primary characteristic position base point; the person skilled in the art can also design the preliminary feature position points by himself at the beginning of the design;

And determining the position information of the preliminary feature position base point in different design type processing requirements, wherein the position information is the feature position base point information.

carrying out feature extraction on the municipal traffic engineering design processing requirements and the data after each design processing, and establishing a preliminary virtual image;

The method comprises the steps of establishing virtual images for municipal traffic engineering design processing requirements and data after each design processing;

the municipal traffic engineering design processing requirements can determine preliminary characteristic position base points under large scenes (such as road engineering, traffic engineering, tunnel engineering and the like) and realize data combination after partial design processing; processing each preliminary virtual image, determining preliminary feature position base points among related design types (for example, a plurality of intersections exist between the power engineering and the lighting engineering and the communication engineering, so that a plurality of preliminary feature position base points respectively shared with the lighting engineering and the ventilation engineering can be determined based on the power engineering);

In particular, the number of the preliminary feature position base points is not less than 3.

The municipal engineering system is characterized in that due to the large volume and the complex characteristics of municipal engineering, common primary characteristic position base points possibly do not exist in various design type processing requirements, a plurality of primary characteristic position base points can be determined at the moment according to different design types, each primary characteristic position base point can be ensured to correspond to the various design type processing requirements, so that position correlation is formed between the various design type processing requirements, and further subsequent positioning is facilitated.

In particular, it further comprises:

The embodiment of the invention relates to a plurality of professions, has the characteristics of complex linear and differential multi-plate roads, multi-curve variable-cross-section bridge tunnels, integration of various outdoor pipelines and the like, has complex models, has large data result files of all professional models, is not beneficial to delivering and displaying the results, and needs further light weight treatment. E.g. total 9.1G of full-professional IFC format file results; bridge tunneling professional Midas CIM (cimz) file achievements total 2.7G; the total of the results of the multi-dimensional road file is 10G.

Therefore, a certain mode is needed to carry out light-weight processing on the data file so as to meet the requirements of delivery, data integration, display and the like. The data is subjected to light weight processing by adopting a software additional module, a plug-in and other modes, so that models and data integration are carried out in a great-city platform, collision detection between pipelines and between the pipelines and structures is carried out later, model achievement display and the like are carried out, and further light weight delivery of the models is realized. By utilizing the powerful data integration function of the Hongcheng platform, about 13G data files are integrated and light-weighted, midas CIM, a digital road and a model result created by Confucius are respectively converted and light-weighted by adopting plug-ins, and 2G Hongcheng data result is formed after light-weighted, so that the method has the functions of off-line result display, collision simulation inspection, video roaming and the like.

Particularly, the embodiment of the invention can set two forms of achievements for platform data integration according to the requirements of users, and simultaneously satisfies the deepening of the follow-up model and the model data management in the operation period.

First, a model result in a general IFC format. So as to facilitate integration and data integration exchange with other models around the project. The IFC standard has the characteristics of integrity, openness, expansibility and authority, and is an international standard suitable for information expression and exchange in all aspects of the whole life cycle of engineering. Therefore, the IFC format is selected to be beneficial to data exchange and full period management of the data and the model and other engineering around the present invention.

And secondly, reserving the data format corresponding to each professional platform. So that in the design process, the subsequent deepened model design is performed by utilizing each professional software based on the change of the design. The method comprises the following steps: road engineering, traffic engineering (without traffic lines), lighting engineering (without lighting lines) provide a multi-dimensional road data result; providing a pipe standing data result by a water supply and drainage project, an electric power project, a communication project, a traffic project pipeline and an illumination project pipeline; bridge engineering and tunnel engineering provide Midas CIM (cimz) data results.

In particular, the embodiment of the application also facilitates the integrated management of design, construction and subsequent operation, and meanwhile, the application assists in establishing and compiling bidding inventory data according to the engineering quantity of the model. The component information table is subdivided according to the category of each professional engineering component, the component codes are assigned, and the assignment of the materials, attributes, units and the like of the model quantity is correspondingly carried out by combining with the engineering quantity list.

Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the specific embodiments of the present application after reading the present specification, and these modifications and variations do not depart from the scope of the application as claimed in the pending claims.

Claims

1. The forward design method for the municipal traffic engineering is characterized by comprising the following steps of:

2. The forward design method of municipal traffic engineering according to claim 1, wherein the processing procedure of the design data processing platform comprises:

classifying and identifying the current design processing requirements;

workload estimation is performed based on design planning;

3. The forward design method of municipal traffic engineering according to claim 1, wherein the plurality of design data processing platforms are respectively:

4. The forward design method of municipal traffic engineering according to claim 1, wherein the performing format unification processing on the data after the design processing to ensure that the data format derived by each design data processing platform is the same comprises:

5. The forward design method of municipal traffic engineering according to claim 1, further comprising:

and combining the data subjected to the unified processing of each format to form combined data.

6. The forward design method of municipal traffic engineering according to claim 5, wherein the combining the data after unifying the formats to form combined data comprises:

7. The forward design method of municipal traffic engineering according to claim 6, wherein the overlapping the same feature position base points in each virtual image to form a virtual image combination diagram comprises:

overlapping the same characteristic position base points in the virtual images;

8. The forward design method of municipal traffic engineering according to claim 6, further comprising:

9. The forward design method of municipal traffic engineering according to claim 6, wherein the feature information extraction of the municipal traffic engineering design processing requirement is performed to obtain one or more feature position base point information, and the method comprises the following steps:

10. The forward design method of municipal traffic engineering according to claim 9, wherein the number of the preliminary feature position base points is not less than 3.