Earth-rock cofferdam parametric model construction method, electronic device and storage medium

Abstract

The present invention discloses a method for constructing a parametric model of an earth-rock cofferdam, an electronic device and a storage medium, the method comprising constructing a topographic surface of an earth-rock cofferdam filling area; determining the layout position of the cofferdam centerline, and drawing the cofferdam centerline at the layout position; determining the cofferdam crest design elevation; according to the drawing standard, changing the longitudinal section characteristics and style, customizing the required longitudinal section style set, and then drawing the longitudinal section in combination with the cofferdam crest design elevation, and drawing the cofferdam crest design elevation control line on the longitudinal section; constructing a parametric cross section of the cofferdam; creating a cross section assembly, loading the cofferdam parametric cross section and inserting it into the cross section assembly; when the geometric parameters of the cofferdam parametric cross section meet the requirements, selecting the cofferdam center line, the cofferdam crest design elevation control line and the cofferdam parametric cross section that have been drawn or constructed in the cofferdam creation interface, and generating an earth-rock cofferdam parametric model. The present invention improves the efficiency of engineering design.

Description

Technical Field

[0001] The present invention belongs to the technical field of water conservancy and hydropower parametric design and construction, and in particular relates to a parametric model construction method of an earth-rock cofferdam based on BIM technology, an electronic device and a storage medium. Background Art

[0002] Nowadays, BIM technology is being used more and more widely in the construction industry. Compared with the previous two-dimensional engineering drawing design, as an information integration and management technology based on a visual building information model, it has inherent advantages such as collaboration, visualization, simulation, optimization, cost savings, and co-construction and sharing.

[0003] At present, CAD two-dimensional drawings are often used for earth-rock cofferdam design. This conventional design method makes it difficult to comprehensively consider the cofferdam's diversion standards, anti-seepage types, plane layout, profile preparation, etc.; it is also difficult to make detailed plans for interception construction, cofferdam foundation excavation, anti-seepage structure construction, weir filling, flood prevention and flood season, operation and maintenance during the cofferdam construction. In addition, the efficiency of scheme preparation and engineering quantity calculation during engineering construction is not high, and it is impossible to fully grasp all parts of the project. Summary of the invention

[0004] The purpose of the present invention is to provide a parametric model construction method for earth-rock cofferdam, an electronic device and a storage medium to solve the problems of design optimization, quick drawing, weir filling zoning and quick calculation of related engineering quantities that cannot be met during the design and construction of earth-rock cofferdam.

[0005] The present invention solves the above technical problems through the following technical solutions: A method for constructing a parametric model of an earth-rock cofferdam, comprising the following steps:

[0006] Construct the terrain surface of the earth-rock cofferdam filling area;

[0007] Determine the layout position of the center line of the cofferdam according to the area to be enclosed and protected by the cofferdam, the phased diversion plan, and the topographic surface of the earth-rock cofferdam filling area, and draw the center line of the cofferdam at the layout position;

[0008] The design elevation of the cofferdam crest is determined based on the topographic elevation of the cofferdam base, the maximum water depth in front of the designed weir, the wave run-up height, and the safe superelevation.

[0009] According to the drawing standard, the characteristics and style of the longitudinal section drawing are changed, the required longitudinal section drawing style set is customized, and then the longitudinal section drawing is drawn in combination with the cofferdam crest design elevation and the cofferdam crest design elevation control line is drawn on the longitudinal section drawing;

[0010] Construct parametric cross sections of cofferdams;

[0011] Creating a cross-section assembly, loading the cofferdam parametric cross-section and inserting it into the cross-section assembly;

[0012] When the geometric parameters of the parametric cross section of the cofferdam meet the requirements, the cofferdam center line, the cofferdam crest design elevation control line and the parametric cross section of the cofferdam that have been drawn or constructed are selected in the cofferdam creation interface to generate the parametric model of the earth-rock cofferdam.

[0013] Based on the characteristic section of the earth-rock cofferdam, the present invention combines the parametric design capability of BIM software to quickly draw the section and set the section parameters in a windowed form, so as to quickly complete the establishment of the earth-rock cofferdam model, provide high convenience for the comparison and optimization of design schemes, drawing drawings, preparation of construction schemes, and engineering quantity statistics, and provide guarantee for design optimization and refined construction.

[0014] Furthermore, the specific implementation process of constructing the terrain surface of the earth-rock cofferdam filling area is as follows:

[0015] Map the underwater topography of the earth-rock cofferdam filling area to obtain the measuring points, their coordinates and bottom elevation information;

[0016] The measuring point coordinates and bottom elevation information are imported into Civil 3D software to generate a topographic surface of the earth-rock cofferdam filling area.

[0017] Furthermore, the specific implementation process of constructing the terrain surface of the earth-rock cofferdam filling area is as follows:

[0018] Based on the electronic terrain data, the terrain data of the earth-rock cofferdam filling area is added to the Civil 3D software to generate the terrain surface of the earth-rock cofferdam filling area; wherein the terrain data includes contour lines, elevation points, landforms and characteristic lines.

[0019] Furthermore, the calculation formula for the design elevation of the cofferdam crest is:

[0020] The design elevation of the cofferdam crest = the elevation of the cofferdam base terrain + the designed maximum water depth in front of the cofferdam + wave height + safety overheight.

[0021] Furthermore, the steps of constructing the parametric cross section of the cofferdam include:

[0022] Taking the center of the cofferdam crest as the starting point, use the point and connection functions to draw the contours of the upstream and downstream slopes of the cofferdam;

[0023] Add the target surface, use the "to surface slope" geometric property of the point to draw the slope excavation lines on both sides of the cofferdam base and connect the slope contours;

[0024] Set the design parameters of the filling area, use the point and connection functions to draw the separation lines of each filling area of ​​the cofferdam, and obtain the intersection points of the separation lines and the ground target surface;

[0025] Use the connection function to connect the intersection points of each separation line with the ground target surface to form the base line of each filling area of ​​the cofferdam;

[0026] By drawing the filling area, the parametric cross section of the cofferdam is obtained.

[0027] Furthermore, the construction method also includes a step of generating an excavation surface, and the specific implementation process is as follows:

[0028] In the process of constructing the parametric cross section of the cofferdam, a code is set for the base line of the cofferdam;

[0029] After importing the constructed parametric cross section into Civil3D, edit the cofferdam centerline properties, select the "Surface" column in the property editing interface, add the code corresponding to the cofferdam base line in the column, and Civil3D can automatically generate the excavation surface.

[0030] Furthermore, the construction method also includes a step of calculating the amount of excavation work for the cofferdam base, and the specific implementation process is as follows:

[0031] adding the excavation surface to the sampling source;

[0032] Use the excavation calculation function and specify the calculation type as excavation;

[0033] Add the excavation surface and the terrain surface of the earth-rock cofferdam filling area under the material catalog column, and specify the terrain surface of the earth-rock cofferdam filling area as the upper part and the excavation surface as the lower part, and then you can derive the excavation volume of the cofferdam base.

[0034] Furthermore, the construction method also includes the step of calculating the engineering quantity of each filling area of ​​the cofferdam, and the specific implementation process is as follows:

[0035] The materials of different filling areas are set, and the engineering quantity of each filling area of ​​the cofferdam is calculated in combination with the parametric cross section of the cofferdam and its material.

[0036] The present invention also provides an electronic device, comprising: a memory for storing a computer program; and a processor for implementing the steps of the earth-rock cofferdam parameterized model construction method as described above when executing the computer program.

[0037] The present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method for constructing a parametric model of an earth-rock cofferdam are implemented.

[0038] Beneficial Effects

[0039] Compared with the prior art, the advantages of the present invention are:

[0040] The present invention provides a method for constructing a parametric model of an earth-rock cofferdam, an electronic device and a storage medium. The method can quickly complete the creation of a parametric model of an earth-rock cofferdam by creating a parametric cross-section of the cofferdam, and coordinating the center line of the cofferdam and the design elevation control line of the cofferdam top. After the model is created, the center line of the cofferdam can be adjusted at any time in the plan view, the design elevation control line of the cofferdam top can be adjusted in the longitudinal section view, and various design parameters of the cofferdam can also be adjusted through a visualization window. The model is automatically regenerated according to the design parameter modification, which greatly improves the optimization efficiency of the design scheme. The constructed parametric cross-section of the cofferdam can be reused, and the cross-section can be directly imported into similar projects to complete related work, thereby improving the design efficiency of similar projects. The created parametric model of the earth-rock cofferdam can be used to create an intuitive design model, which is convenient for self-inspection during the design process and engineering quantity statistics during the construction process, greatly improving the efficiency of design optimization and engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 is a flow chart of a method for constructing a parametric model of an earth-rock cofferdam in an embodiment of the present invention;

[0043] Figure 2 is a schematic diagram of size codes and default parameter settings in an embodiment of the present invention;

[0044] Figure 3 is a schematic diagram of adding a target curved surface in an embodiment of the present invention;

[0045] Figure 4 Schematic diagram of the intersection of the slope and the cofferdam base surface in an embodiment of the present invention;

[0046] Figure 5 It is a schematic diagram of the intersection points of each filling boundary line of the cofferdam and the base surface in an embodiment of the present invention;

[0047] Figure 6 is a schematic diagram of color setting of the filling area in an embodiment of the present invention;

[0048] Figure 7 Schematic diagram of the material setting of the cofferdam filling in an embodiment of the present invention;

[0049] Figure 8is a schematic diagram of generating a curved surface for excavation of a cofferdam base in an embodiment of the present invention;

[0050] Fig. 9 This is a quick drawing result of the cofferdam section in the embodiment of the present invention. DETAILED DESCRIPTION

[0051] The following is a clear and complete description of the technical solutions in the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] The technical solution of the present application is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0053] like Figure 1 As shown, a method for constructing a parametric model of an earth-rock cofferdam provided by an embodiment of the present invention includes the following steps:

[0054] 1. Construct the terrain surface of the earth-rock cofferdam filling area

[0055] In this embodiment, there are two ways to construct the terrain surface of the earth-rock cofferdam filling area: one is to construct the terrain surface without electronic terrain data, and the other is to construct the terrain surface with electronic terrain data.

[0056] (1) No electronic terrain data

[0057] In the absence of electronic terrain data, usually during the period of engineering design scheme comparison, unmanned survey ships can be used for underwater terrain mapping. In actual operation, technicians first arrange measurement points and base stations in the earth-rock cofferdam filling area. After the measurement accuracy of the measurement points and base stations meets the requirements, they set up unmanned ship bridges and ground workstations, set up RTK mobile stations (real-time differential positioning equipment) on the unmanned ship, and place the unmanned ship in the water; after launching, use the remote control to control the unmanned ship to sail around the periphery of the survey area to define the range of automatic measurement by the unmanned ship; at the ground workstation, plan the route for automatic measurement of the unmanned ship according to the measurement range. After the automatic aerial survey of the unmanned ship is completed, the measurement results can be exported. The export file format uses the form of "measurement point number, X, Y, bottom elevation", and then the measurement point coordinates and bottom elevation information files are imported into the Civil 3D software to quickly generate terrain surfaces.

[0058] (2) Electronic terrain data

[0059] On the basis of electronic terrain data, the terrain data of the earth-rock cofferdam filling area is added to Civil 3D software to generate the terrain surface of the earth-rock cofferdam filling area; the terrain data includes contour lines, elevation points, landforms and characteristic lines.

[0060] 2. Draw the center line of the cofferdam

[0061] Determine the layout position of the center line of the cofferdam according to the area to be enclosed and protected by the cofferdam, the phased diversion plan, and the terrain surface of the earth-rock cofferdam filling area in step 1. Call out the route creation tool according to the route creation function in the Civil 3D design creation, and use the route creation tool to draw the center line of the cofferdam at the layout position. According to the drawing standard, use Civil 3D to change the characteristics of the terrain surface and route of the earth-rock cofferdam filling area, customize the required drawing style, and thus meet the plane drawing requirements. The drawing standard is the standard of the design or construction unit itself, such as the pile number spacing and dimensioning of the cross-section drawing, which can be changed in the characteristics to meet the requirements.

[0062] 3. Draw the design elevation control line of the cofferdam crest

[0063] The design elevation of the cofferdam crest is determined based on the topographic elevation of the cofferdam base, the maximum water depth in front of the designed weir, the wave run-up and the safe superelevation. The specific calculation formula is:

[0064] The design elevation of the cofferdam crest = the elevation of the cofferdam base terrain + the designed maximum water depth in front of the cofferdam + wave height + safety overheight.

[0065] According to the drawing standards, the characteristics and style of the longitudinal section view are changed through Civil 3D, and the required longitudinal section view style set is customized. Combined with the cofferdam crest design elevation, the longitudinal section view is drawn using the longitudinal section creation tool of Civil 3D, and the cofferdam crest design elevation control line is drawn on the longitudinal section view.

[0066] 4. Construct parametric cross section of cofferdam

[0067] The drawing of each part and the control of cross-section geometric relations are achieved by calling API and functions.

[0068] (1) Parametric control of upstream and downstream slope profiles

[0069] Draw the contour lines of the upstream and downstream slopes of the cofferdam with the midpoint of the cofferdam crest as the origin. Use "Create Parameters" to create dimensional parameters such as the crest width and filter material thickness. Use code to represent the size of a certain part. Set a default value when creating it. You can call and assign values ​​at any time when using the parameter. Figure 2When drawing the contour, the intersection of the upstream and downstream slopes and the "cofferdam base surface" can be obtained by first adding the target surface as the "cofferdam base surface" in the "target parameters", naming it EG, and then adding "points". The added point geometry type should select "to surface slope", select "cofferdam base surface" as the target surface, and enter the design slope parameters in the slope column.

[0070] When drawing the intersection of the upstream and downstream slopes and the "cofferdam base surface", first add target surface 1 in the "target parameters" as the "cofferdam base surface" and name it EG, such as Figure 3 ; Then, in the input / output parameter variable, create variables sy1 and sy2 through "Create Parameters", select the data type as Grade, that is, you can fill in the design slope in a 1:X manner, indicating the slope ratio of the upstream primary slope and the secondary slope; add another "point" P5, select the outer boundary point P4 of the upstream bridleway as the starting point, use EG as the surface target, and fill in -sy2 in the slope column (the negative sign indicates that the slope is downward), that is, connect P4 to the surface EG with a fixed slope, and the intersection point is P4, such as Figure 4 Other contour lines that need to be connected to the surface can be connected using a similar method.

[0071] (2) Excavation line of the slopes on both sides of the cofferdam base

[0072] Add a second target surface through "Target Parameters" as "Terrain Surface" and name it EG2. Set the excavation width on both sides of the weir foundation and the slope excavation ratio in "Input / Output Parameters". The name is defined as i When setting the slope ratio, pay attention to selecting "Grade" as the parameter type and input it in the form of 1:X; then add point P8 (taking the upstream as an example) as the intersection of the excavation slope on the upstream side of the cofferdam and the terrain surface, select the geometry type "Slope to surface", set the starting point to the excavation boundary point P7 on the upstream side of the cofferdam base, and select EG2 (i.e. the terrain surface) as the target surface. Then, you can draw the excavation line of the upstream side slope of the cofferdam base. Repeat the operation to draw the excavation line of the downstream side slope.

[0073] (3) Cofferdam base line connection control

[0074] Before drawing the connection line of the cofferdam base, set the design size of the anti-seepage core wall, use the parameter setting in "Create Parameters" to add the variable "Design Thickness", use the geometry type "Increment X and Increment Y" when adding points, draw the control points of the boundaries of the components of the anti-seepage core wall on the top of the weir, and then use the geometry type "Increment X on Surface" when adding points to obtain the intersection of the boundary lines of the components of the anti-seepage core wall and the base surface of the cofferdam and connect them to draw the boundary line. Repeat this step to complete the drawing of all boundary lines. It should be noted that when drawing the control points of the core wall on the parametric plane, the auxiliary point addition mode should be used.

[0075] For example, use "Create Parameters" to add variables cq (design thickness of the barbed wall) and fll (thickness of the filter material), select the origin (for example, the center line of the barbed wall coincides with the center line of the cofferdam, use the geometry type "Increment X and Increment Y" when adding points, select the starting point as the center point P1 of the cofferdam top as the origin), fill in dk / 2 in the incremental X direction (dk is the variable cofferdam top width), and you can get the intersection point P23 of the left boundary line of the barbed wall and the cofferdam top. The intersection point of the right boundary line and other side lines of the stacking area with the cofferdam top can be obtained by the same setting method; add an auxiliary point in the process sequence, use the geometry type "Increment X on Surface", and Increment X is used to refer to the offset distance on the plane, such as Figure 5 , select the intersection point P23 of the left boundary line of the barbed wall and the top of the weir as the starting point, set the target surface to the cofferdam base surface EG, fill in the increment X according to the design data, and you can get the intersection point of the left boundary line of the barbed wall and the cofferdam base surface. After selecting Connect to the starting point, you can draw the left boundary line of the barbed wall. Repeat this step to complete the drawing of all anti-seepage core wall edges.

[0076] When controlling the connection of the cofferdam base line, use the "surface connection" function. After setting the target parametric plane cofferdam base surface to "EG", fill in the corresponding control point X value code in the starting point and end point X values, such as "ap1.x", to complete the connection of the cofferdam base line. Taking the left rockfill area as an example, set the target surface to the cofferdam base surface as "EG", fill in "ap1.x" in the starting point X, and fill in "ap2.x" in the end point X, and the connection of the cofferdam base line of this part can be completed.

[0077] Repeat the above steps to complete the relevant excavation reference surface connection lines.

[0078] (4) Drawing of each filling area of ​​the cofferdam

[0079] When drawing each filling area, the filling materials in different areas are drawn differently by establishing different surface connections and using different closed figures.

[0080] After completing the surface connection, the generated surface connection line and the contour line are not closed, and the filling area cannot be drawn directly. At this time, the points automatically created when the surface is connected should be connected with the intersection points of the filling boundary lines and the cofferdam base line obtained when drawing the contour line. Take the left rockfill area as an example: the intersection point of the upstream slope and EG is P5, the intersection point of the left anti-filter material boundary line and EG is P24, and the points and lines automatically generated by the surface connection are P25, P26, and L22. At this time, you need to add "Connection", set the starting point to P25, and the end point to P5 that coincides with P25. Similarly, connect P26 and P24. At this time, add the shape and select the drawing area to complete the drawing of the left rockfill area.

[0081] It should be noted that when drawing the filling area, the contour lines of the area to be drawn must be connected and closed. For example, when drawing the left anti-filter material S2, the ground line connection will generate points P27, P28 and line L25. In the view, L25 is the left anti-filter material contour line, but in fact L25 is not connected to the previously drawn left anti-filter material boundary lines L19 and L21. At this time, it is necessary to add another connection to connect P27 with P24 and P28 with P22. Only then can the geometric figure be closed and the filling area can be drawn. The theory of modeling and drawing other areas is the same as above.

[0082] 5. Generate parametric model of cofferdam

[0083] After the parametric cross section of the cofferdam is generated, load the parametric cross section of the cofferdam into the component library of Civil 3D for use. After the center line of the earth-rock cofferdam and the design elevation control line of the weir crest are created, use the assembly creation function to create a cross section assembly, load the parametric cross section of the cofferdam and insert it into the cross section assembly. After the insertion is completed, check whether the geometric parameter settings of the parametric cross section of the cofferdam meet the requirements. If not, fill them directly in the property window; if they meet the requirements, use the "Road" function of Civil 3D to create the cofferdam. In the creation interface, select the results drawn or created in the above steps for the center line of the cofferdam, the design elevation control line of the weir crest, and the cross section. Select EG and EG2 to the terrain surface and excavation surface. After the above work is completed, the parametric model of the earth-rock cofferdam can be generated.

[0084] When the cofferdam parametric model is generated, the color of each part can be set in the road entity extraction interface to facilitate the distinction of different filling areas, such as Figure 6 shown.

[0085] After the parametric model of the cofferdam is generated, the entity model can be viewed and inspected through the object viewer. If some points are not connected in the model, all points and lines can be coded in the process of making parametric cross sections. It should be noted that the code should be filled in with English input quotation marks "", and the corresponding code can be filled in the quotation marks, such as "s1", "p1", "L1".

[0086] 6. Deepen the application of model results

[0087] (1) Cofferdam scheme comparison

[0088] The cofferdam centerline, weir top design elevation control line, and design parameters are directly associated with the cofferdam parametric model generation. After adjusting the control lines and parameters, the model will be automatically updated dynamically. During design optimization, modifications to the cofferdam filling area and various design data can be adjusted and modified directly in the plan view, longitudinal section view, and visualization parameter window without redrawing.

[0089] (2) Calculation of filling quantity

[0090] When drawing the parametric cross section, target parameters EG and EG2 are added as terrain. After the parametric model is generated, the base of the cofferdam parametric model will change automatically according to the terrain surface and excavation surface. You can use material calculation to set materials for different filling partitions, analyze each filling partition, and then use the parametric cross section and the previously set materials to quickly export the engineering volume of each filling area of ​​the cofferdam, such as Figure 7 Civil 3D can automatically obtain the cross-sectional area and automatically calculate the engineering quantity based on the average end area and the distance between the two end faces.

[0091] (3) Excavation surface drawing

[0092] When constructing a parametric cross section, set the code for each surface connection line. In Civil 3D, edit the road characteristics, add a surface in the surface column, and add the specified code to generate the excavation surface. For example, Figure 8 shown.

[0093] (4) Calculation of excavation volume

[0094] After drawing the excavation surface, edit the sampling source, add the newly generated excavation surface to the sampling source, and then use the excavation calculation function of the material calculation, specify the calculation type as excavation, add the excavation surface and the terrain surface generated in step 1 under the material column, specify the terrain surface as the top and the excavation surface as the bottom. After the settings are completed, the cofferdam base excavation volume can be quickly exported, and the excavation volume can be calculated after the relevant surfaces.

[0095] (5) Quick drawing

[0096] Using the Civil 3D drawing function, based on the completed model, according to the drawing party's own standards and requirements, the style and characteristics in Civil 3D can be modified to customize the relevant annotation forms of the horizontal and vertical sections, such as sidebar annotations, chart titles, horizontal grid sizes, etc., for fast drawing, which can quickly complete the automatic drawing of horizontal and vertical sections (such as Fig. 9 As shown), it provides higher efficiency for design drawing.

[0097] During the construction process, according to the actual construction conditions, if there are changes in the cofferdam structure size, cofferdam layout, and filling materials, the cofferdam filling center line can be directly adjusted in the plan view, the weir top design elevation control line can be directly modified in the longitudinal section view, and the size of each filling area can be modified in the cross-section parametric customization window. The drawing style can then be customized and modified according to actual needs, so that drawings can be produced efficiently, greatly improving the communication and coordination efficiency between the design and construction parties.

[0098] (6) Excavation and filling range control and auxiliary on-site layout

[0099] When creating the parametric section of the earth-rock cofferdam, the intersection of the excavation slope and the terrain surface is obtained using the cofferdam slope, excavation slope and target surface. After the parametric model is generated, the overall model outline can be viewed in the Civil 3D plane. At this time, the intersection of the excavation slope line and the terrain surface will be reflected in the plane as an edge line. The edge line coordinates can be read by drawing points or lines. In the actual construction process, the read coordinates can be used to quickly stake out the excavation edge line, greatly improving the efficiency of construction preparation.

[0100] Similarly, the intersection of each filling partition boundary line and the cofferdam base surface can also be displayed in the plane. After extracting the coordinates, the filling boundary line position of each area can be quickly determined to assist on-site construction and excavation and layout. In addition, the characteristics of Civil 3D and the component editor can be used to layer the parametric sections and models. After the layered model is generated, the filling quantity of each layer can be calculated separately, which is convenient for the optimization and allocation of the filling material quantity during the layered filling construction of the cofferdam, greatly improving the construction efficiency.

[0101] When the parameterized cross section is created, the present invention divides the filling areas of the cofferdam and handles the intersection with the terrain surface, so that the cofferdam model can be generated separately according to different filling materials, and the bottom of the model can change with the changes of the terrain surface and the excavation surface; when the parameterized cross section is created, the control of the intersection of the excavation slope and the terrain surface changes with the changes of the terrain surface and the excavation surface, which is convenient for statistics of the excavation project volume.

[0102] After the parametric cross section is built, the material processing method is applied to different partitions. Through setting analysis, the filling quantity of different partitions is calculated separately, and the cumulative quantity can be calculated according to the different pile numbers; after the parametric model is generated, the excavation quantity can be calculated, including the setting generation of the excavation surface and the calculation and analysis of the excavation quantity; after the terrain surface is generated in Civil 3D, the model section changes with the terrain, and the intersection of the upstream and downstream cofferdam slopes and the terrain, and the intersection of the excavation slope line and the terrain will be directly reflected in the plan view. Using the characteristics of the software itself, the excavation range and the filling range can be directly read, and there is no need for repeated calculations and layout during actual construction, which greatly speeds up the construction measurement progress.

[0103] What is disclosed above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or modifications within the technical scope disclosed in the present invention, which should be covered within the protection scope of the present invention.

Claims

1. A method for constructing a parametric model of an earth-rock cofferdam, characterized in that: The following steps are involved: Construct the terrain surface of the earth-rock cofferdam filling area; Determine the layout position of the center line of the cofferdam according to the area to be enclosed and protected by the cofferdam, the phased diversion plan, and the topographic surface of the earth-rock cofferdam filling area, and draw the center line of the cofferdam at the layout position; The design elevation of the cofferdam crest is determined based on the topographic elevation of the cofferdam base, the maximum water depth in front of the designed weir, the wave run-up height, and the safe superelevation. According to the drawing standard, the characteristics and style of the longitudinal section drawing are changed, the required longitudinal section drawing style set is customized, and then the longitudinal section drawing is drawn in combination with the cofferdam crest design elevation and the cofferdam crest design elevation control line is drawn on the longitudinal section drawing; Construct parametric cross sections of cofferdams; Creating a cross-section assembly, loading the cofferdam parametric cross-section and inserting it into the cross-section assembly; When the geometric parameters of the parametric cross section of the cofferdam meet the requirements, the cofferdam center line, the cofferdam crest design elevation control line and the parametric cross section of the cofferdam that have been drawn or constructed are selected in the cofferdam creation interface to generate the parametric model of the earth-rock cofferdam.

2. The method for constructing a parametric model of an earth-rock cofferdam according to claim 1, characterized in that: The specific implementation process of constructing the terrain surface of the earth-rock cofferdam filling area is as follows: Map the underwater topography of the earth-rock cofferdam filling area to obtain the measuring points, their coordinates and bottom elevation information; The measuring point coordinates and bottom elevation information are imported into Civil 3D software to generate a topographic surface of the earth-rock cofferdam filling area.

3. The method for constructing a parametric model of an earth-rock cofferdam according to claim 1, characterized in that: The specific implementation process of constructing the terrain surface of the earth-rock cofferdam filling area is as follows: Based on the electronic terrain data, the terrain data of the earth-rock cofferdam filling area is added to the Civil 3D software to generate the terrain surface of the earth-rock cofferdam filling area; wherein the terrain data includes contour lines, elevation points, landforms and characteristic lines.

4. The method for constructing a parametric model of an earth-rock cofferdam according to claim 1, characterized in that: The calculation formula for the design elevation of the cofferdam crest is: The design elevation of the cofferdam crest = the elevation of the cofferdam base terrain + the designed maximum water depth in front of the cofferdam + wave height + safety overheight.

5. The method for constructing a parametric model of an earth-rock cofferdam according to claim 1, characterized in that: The steps of constructing the parametric cross section of the cofferdam include: Taking the center of the cofferdam crest as the starting point, draw the contours of the upstream and downstream slopes of the cofferdam; Add the target surface, use the "to surface slope" geometric property of the point to draw the slope excavation lines on both sides of the cofferdam base and connect the slope contours; Set the design parameters of the filling area, draw the separation lines of each filling area of ​​the cofferdam, and obtain the intersection points of the separation lines and the ground target surface; Connect the intersection points of each separation line and the ground target surface to form the base line of each filling area of ​​the cofferdam; By drawing the filling area, the parametric cross section of the cofferdam is obtained.

6. The method for constructing a parametric model of an earth-rock cofferdam according to any one of claims 1 to 5, characterized in that: The construction method also includes the step of generating an excavation surface, and the specific implementation process is as follows: In the process of constructing the parametric cross section of the cofferdam, a code is set for the base line of the cofferdam; After importing the constructed parametric cross section into Civil3D, edit the cofferdam centerline properties, select the "Surface" column in the property editing interface, add the code corresponding to the cofferdam base line in the column, and Civil3D can automatically generate the excavation surface.

7. The method for constructing a parametric model of an earth-rock cofferdam according to any one of claims 1 to 5, characterized in that: The construction method also includes a step of calculating the amount of excavation work at the cofferdam base, and the specific implementation process is as follows: adding the excavation surface to the sampling source; Use the excavation calculation function and specify the calculation type as excavation; Add the excavation surface and the terrain surface of the earth-rock cofferdam filling area under the material catalog column, and specify the terrain surface of the earth-rock cofferdam filling area as the upper part and the excavation surface as the lower part, and then you can derive the excavation volume of the cofferdam base.

8. The method for constructing a parametric model of an earth-rock cofferdam according to any one of claims 1 to 5, characterized in that: The construction method also includes the step of calculating the engineering quantity of each filling area of ​​the cofferdam, and the specific implementation process is as follows: The materials of different filling areas are set, and the engineering quantity of each filling area of ​​the cofferdam is calculated in combination with the parametric cross section of the cofferdam and its material.

9. An electronic device, characterized in that: include: Memory for storing computer programs; A processor is used to implement the steps of the method for constructing a parametric model of an earth-rock cofferdam as described in any one of claims 1 to 8 when executing the computer program.

10. A computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method for constructing a parametric model of an earth-rock cofferdam according to any one of claims 1 to 8.

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