Application system and operation method of BIM (Building Information Modeling) technology on mountainous area highway sloping

Abstract

The invention relates to the field of engineering construction, and discloses an application system and an operation method of a BIM technology on mountainous area highway sloping, the application system comprises a data acquisition and processing module, the data acquisition and processing module is responsible for acquiring and processing original data, and provides a basis for subsequent modeling and analysis; the data acquisition and processing module is connected with a three-dimensional terrain modeling module, the three-dimensional terrain modeling module creates a three-dimensional terrain curved surface according to the processed point cloud data, and a terrain basis is provided for road design and sloping analysis; the three-dimensional terrain modeling module is connected with a road cross section design module. According to the method, the terrain curved surface is accurately generated by using the point cloud technology, and the parameterized sloping three-dimensional model is generated according to the original curved surface model and the road design model, so that compared with a traditional terrain measurement mode, the method is more convenient, meanwhile, the accuracy of data precision is higher, and the situation of large errors of manual operation is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering construction, and in particular to an application system and an operation method of BIM technology in sloping of mountain roads. Background Art

[0002] In mountain highway construction, slope reduction is a crucial task. Traditional slope reduction methods mainly rely on engineers' experience and manual calculations. Engineers need to conduct a lot of survey work on the spot, measure terrain data, and then analyze it through paper topographic maps. The landforms in mountainous areas are complex, with mountains, hills, river slopes, etc., and the plains are relatively small and scattered. This landform feature increases the difficulty of road construction, survey and design: 1. The terrain is undulating: Fujian's terrain is undulating, with steep slopes in mountainous and hilly areas and relatively low slopes in plain areas. This terrain increases the difficulty of original ground simulation and slope design, and also has a great impact on the calculation of earthwork volume and transportation planning after slope reduction. 2. Complex geological structure: The terrain in mountainous areas is complex. After more than 2 billion years of vicissitudes of crustal movement, the strata are relatively complete, and the geological structure is very complex and changeable. 4. High environmental protection requirements: According to the current environmental construction requirements, the original environment needs to be maintained as much as possible during the renovation and construction process, which requires full consideration of the overall terrain and geology for construction at the initial design and planning nodes. In summary, the landform characteristics of mountainous areas have a significant impact on the slope design and later earthwork calculation and deployment difficulties during the construction of mountainous roads. Therefore, this paper develops new technologies and methods based on BIM and point cloud on the basis of considering many factors. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides an application system and operation method of BIM technology in the grading of mountain roads, which solves the problem that the topographic characteristics of mountainous areas have a significant impact on the grading design of mountainous highway construction and the difficulty of later earthwork calculation and allocation.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an application system of BIM technology in mountain highway sloping, including a data acquisition and processing module, which is responsible for acquiring and processing raw data to provide a basis for subsequent modeling and analysis; a three-dimensional terrain modeling module is connected to the data acquisition and processing module, and the three-dimensional terrain modeling module creates a three-dimensional terrain surface based on the processed point cloud data to provide a terrain basis for road design and sloping analysis; a road cross-section design module is connected to the three-dimensional terrain modeling module, and the road cross-section design module draws the road cross-section, Prepare for generating road entities and grading systems; the road cross-section design module is connected to an automatic grading system design module, which creates an automatic grading system according to terrain conditions to achieve automatic generation of single-level or multi-level slopes; the automatic grading system design module is connected to a road and grading surface generation module, which combines the designed road and grading components to generate roads and grading surfaces, and performs relevant analysis; the road and grading surface generation module is connected to an earthwork allocation module, which partitions the construction area and calculates the earthwork allocation situation.

[0005] The operation method of the application system of BIM technology in mountainous highway grading includes the following steps: S1.Autodesk ReCap point cloud processing; S2.Civil3d creates a surface; S3. Autodesk Subassembly Composer creates road sections and uses the visual editor (Autodesk Subassembly Composer) to draw road cross sections in order to generate road entities in civil3d; S4.Autodesk Subassembly Composer creates automatic grading systems; S5.Civil3D creates roads and grading surfaces; S6. Earthwork allocation.

[0006] Preferably, step S1 includes: S101. importing the point cloud data acquired by the drone into Autodesk ReCap; S102. processing the point cloud data, deleting unnecessary points and areas; S103. exporting in rcp format to prepare for importing into cicil3d.

[0007] Preferably, the point cloud data format acquired by the drone in step S101 is in LAS format.

[0008] Preferably, step S2 includes: S201. Importing the model exported from Autodesk ReCap into civil3d; S202. Adjusting the detail level and the point cloud size, and selecting the project area; S203. Adjusting the detail level and the point cloud size, and selecting the project area; S204. Creating a surface from the point cloud; S205. Generating a surface and adding a boundary to meet the size of the project area; S206. Simplifying the original surface and generating a three-dimensional original terrain surface.

[0009] Preferably, step S3 includes: S301. Define points P1 and P2 as the centerline and edgeline control points of the road, and set the initial slope of P2; S302. Pull the Link definition line L1 in Geomentry to connect P1 and P2, and design L; S303. Similarly, define P4 and P5, and define L3, L4, and L5 to generate a road cross-section model.

[0010] Preferably, step S4 includes: S401. Define P1 as the slope origin; S402. And define double-precision variables s1, hv, smv; wherein s1 is defined as IF; hv is defined as IF(P1.DISTANCETOSURFACE; smv is defined as IF; S403. Pull out the Decision module as the judgment of multi-level slope and single-level slope, and the judgment condition is math.abs

[0011] ​Preferably, step S5 includes: S501. Create plane linear and longitudinal linear according to the designed road; S502. Load the road and grading components compiled in Part 4; S503. Generate the road; S504. Generate left / right grading and set the step size; S505. Generate road surface and slope surface model; S506. Merge the road surface and the grading surface to generate a complete surface, and perform cut and fill analysis; S507. Perform cut and fill analysis on the road + grading surface and the original terrain surface; S508. Cut and fill analysis, red represents cut, blue represents fill, the darker the color, the larger the cut and fill; S509. When adjusting the grading parameters, call out the feature bar, modify the corresponding parameters, and the model will be modified in conjunction, and the same is true for adjusting the road cross slope / longitudinal slope / plane linear.

[0012] Preferably, step S6 includes: S601. Dividing the construction area into zones; S602. Performing calculations according to different construction areas.

[0013] The application of BIM technology in the application system of mountain highway sloping, the application system of BIM technology in mountain highway sloping as claimed in claim 1, is applied to the field of engineering construction, especially the field of virtual engineering design and construction.

[0014] The present invention provides an application system and operation method of BIM technology in mountain highway grading, which has the following beneficial effects: 1. The present invention uses point cloud technology to accurately generate terrain surfaces, and generates a parametric grading three-dimensional model based on the original surface model and the road design model, which makes it more convenient than traditional terrain measurement methods, and at the same time, the data accuracy is higher, avoiding the occurrence of large errors caused by human operation.

[0015] 2. The present invention forms a new technical route compared to the traditional working method through a visual programming workflow of road components and multi-level slopes, and uses different software for interaction. It not only provides new ideas for the field of virtual construction, but also improves the accuracy and work efficiency of surveying and modeling design. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a flow chart of the steps of the present invention; Figure 2 This is a schematic diagram of importing LAS point cloud data in S101 of the present invention; Figure 3 This is a schematic diagram of point cloud processing before deletion in S102 of the present invention; Figure 4 This is a schematic diagram of point cloud processing after deletion in S102 of the present invention; Figure 5 This is a schematic diagram of importing rcp point cloud data in S201 of the present invention; Figure 6 A schematic diagram of importing RCP point cloud data in S202 of the present invention; Figure 7 It is a schematic diagram of importing rcp point cloud data in S203 of the present invention; Figure 8 It is a schematic diagram of importing RCP point cloud data in S204 of the present invention; Fig. 9 It is a schematic diagram of the original terrain surface in S205 of the present invention; Fig.10 A schematic diagram of the original three-dimensional terrain in S206 of the present invention; Fig.11 It is a schematic diagram of defining points P1 and P2 in S301 of the present invention; Fig.12 It is a schematic diagram of the slope of P2 in S301 of the present invention; Fig.13 It is a schematic diagram of defining points P1 and P2 in S302 of the present invention; Fig.14 A schematic diagram of points P1 and P2 defined in S303 of the present invention; Fig.15 A schematic diagram of variables defined in S402 of the present invention; Fig.16 A schematic diagram of a single-stage / multi-stage slope in S403 of the present invention; Fig.17 A schematic diagram of a single-stage / multi-stage slope in S404 of the present invention; Fig.18 It is a schematic diagram of the multi-level slope in S405 of the present invention; Fig.19 It is a plane linear schematic diagram of S501 of the present invention; Fig. 20 It is a linear schematic diagram of the longitudinal section in S501 of the present invention; Fig.21 It is a schematic diagram of components in S502 of the present invention; Fig. 22 It is a schematic diagram of the road model in S503 of the present invention; Fig.23 It is a plane linear schematic diagram of S504 of the present invention; Fig.24 It is a linear schematic diagram of the longitudinal section in S504 of the present invention; Fig.25 It is a schematic diagram of a three-dimensional model of the road / slope in S505 of the present invention; Fig.26 It is a schematic diagram of surface merging in S506 of the present invention; Fig. 27It is a schematic diagram of the cut-and-fill analysis surface in S507 of the present invention; Fig.28 It is a schematic diagram of earthwork excavation and filling analysis in S508 of the present invention; Fig.29 This is a schematic diagram of adjusting component parameters in S509 of the present invention; Fig.30 It is a schematic diagram of the construction area division in s6 of the present invention; Fig.31 It is a system flow chart of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions 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. Example

[0018] Please refer to the attached Figure 1 -Attached Fig.31 , an embodiment of the present invention provides an application system of BIM technology in mountain highway grading, including a data acquisition and processing module, which is responsible for acquiring and processing raw data to provide a basis for subsequent modeling and analysis; The data acquisition and processing module is connected to a three-dimensional terrain modeling module, which creates a three-dimensional terrain surface based on the processed point cloud data to provide a terrain basis for road design and slope analysis; The three-dimensional terrain modeling module is connected to a road cross-section design module, and the road cross-section design module draws a road cross-section to prepare for generating a road entity and a grading system; The road cross-section design module is connected to an automatic slope reduction system design module, and the automatic slope reduction system design module creates an automatic slope reduction system according to terrain conditions to realize automatic generation of single-level or multi-level slopes; The automatic grading system design module is connected to a road and grading surface generation module, which generates roads and grading surfaces by combining the designed roads and grading components, and performs relevant analysis; The road and slope surface generation module is connected to an earthwork allocation module, which partitions the construction area and calculates the earthwork allocation situation.

[0019] The operation method of the application system of BIM technology in mountainous highway grading includes the following steps: S1.Autodesk ReCap point cloud processing; S101. Import the point cloud data (LAS format) acquired by the drone into Autodesk ReCap; S102. Process the point cloud data and delete unnecessary points and areas; S103. Export the RCP format to prepare for importing into cicil3d; S2.Civil3d creates a surface; S201. Import the model exported from Autodesk ReCap into civil3d; S202. Adjust the detail level and point cloud size, and select the project area; S203. Adjust the detail level and point cloud size, and select the project area; S204. Create a surface from a point cloud; S205. Generate a surface and add boundaries to meet the size of the project area; S206. Simplify the original surface and generate a three-dimensional original terrain surface as shown in the attached figure. Fig.10 As shown; S3. Autodesk Subassembly Composer creates road sections and uses the visual editor (Autodesk Subassembly Composer) to draw road cross sections in order to generate road entities in civil3d; S301. Define points P1 and P2 as the road centerline and sideline control points, and set the initial slope of P2 to 2%; S302. Pull the Link definition line L1 in Geomentry to connect P1 and P2, and design L; S303. Similarly, define P4, P5, and define L3, L4, L5 to generate a road cross-section model; S4.Autodesk Subassembly Composer creates automatic grading systems; S401. Define P1 as the grading origin; S402. And define double precision (double) variables s1, hv, smv; where s1 is defined as IF(P1.DISTANCETOSURFACE(target surface)>0,0-st,0+sw); hv is defined as IF(P1.DISTANCETOSURFACE(target surface)>0,-h1,h1); smv is defined as IF(P1.DISTANCETOSURFACE(target surface)>0,0-sm,0+sm); S403. Pull out the Decision module as the judgment of multi-level slope and single-level slope. The judgment condition is math.abs(p1.y-ap1.Y) S404. If the terrain does not satisfy the single-level slope, the program enters the multi-level slope, re-determines, and sets the bridleway L9 at the first-level slope and determines whether it is a full-width bridleway. The determination condition is set to P2.DISTANCETOSURFACE (target surface) * AP2.DISTANCETOSURFACE (target surface) < 0, and then AP2 is used as the starting point as shown in the following figure; S405. Same as S403 and S404, take P3 as the starting point and pull the Decision module again to determine whether it is a multi-level slope, and generate a bridleway, and repeat this process to make a three-level slope system, as shown in the attached figure. Fig.18 As shown; S406. End the visual programming export component; S5.Civil3D creates roads and grading surfaces; S501. Create plane linearity and longitudinal section linearity according to the designed road; S502. Load the road and grading components compiled in Part 4; S503. Generate roads; S504. Generate left / right side grading, and set the step length to 5m; S505. Generate road surface and slope surface models; S506. Merge the road surface and the slope surface to generate a complete surface, and perform cut-and-fill analysis; S507. Perform cut-and-fill analysis on the road + slope surface and the original terrain surface; S508. Cut and fill analysis, red represents cut, blue represents fill, the darker the color, the greater the amount of cut (fill); S509. When adjusting the slope parameters, call out the feature bar, modify the corresponding parameters, and the model will be modified in conjunction. The same is true for adjusting the road's cross slope / longitudinal slope / plane linearity; S6. Earthwork deployment: S601. Divide the construction area into zones; S602. And calculate according to different construction areas.

[0020] ​Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The application system of BIM technology in mountain highway slope reduction is characterized by: The system comprises a data acquisition and processing module, which is responsible for acquiring and processing raw data to provide a basis for subsequent modeling and analysis; the data acquisition and processing module is connected to a three-dimensional terrain modeling module, which creates a three-dimensional terrain surface based on the processed point cloud data to provide a terrain basis for road design and slope analysis; the three-dimensional terrain modeling module is connected to a road cross-section design module, which draws a road cross-section to prepare for generating a road entity and a slope system; the road cross-section design module is connected to an automatic slope system design module, which creates an automatic slope system according to terrain conditions to achieve automatic generation of single-level or multi-level slopes; the automatic slope system design module is connected to a road and slope surface generation module, which generates a road and slope surface in combination with the designed road and slope components, and performs relevant analysis; the road and slope surface generation module is connected to an earthwork allocation module, which partitions the construction area and calculates the earthwork allocation situation.

2. The method for operating the application system of BIM technology in mountainous highway grading according to claim 1 comprises the following steps: S1.Autodesk ReCap point cloud processing; S2.Civil3d creates a surface; S3. Autodesk Subassembly Composer creates road sections and uses the visual editor (Autodesk Subassembly Composer) to draw road cross sections in order to generate road entities in civil3d; S4.Autodesk Subassembly Composer creates automatic grading systems; S5.Civil3D creates roads and grading surfaces; S6. Earthwork allocation.

3. The operating method of the application system of BIM technology in mountainous highway grading according to claim 2 is characterized in that: Step S1 includes: S101. Importing the point cloud data acquired by the drone into Autodesk ReCap; S102. Processing the point cloud data, deleting unnecessary points and areas; S103. Exporting the RCP format to prepare for importing into Cicil3D.

4. The operating method of the application system of BIM technology in mountainous highway grading according to claim 3 is characterized in that: The point cloud data format acquired by the drone in step S101 is in LAS format.

5. The application system and operation method of BIM technology in mountain highway grading according to claim 2 is characterized in that: Step S2 includes: S201. Import the model exported from Autodesk ReCap into civil3d; S202. Adjust the detail level and point cloud size, and select the project area; S203. Adjust the detail level and point cloud size, and select the project area; S204. Create a surface from the point cloud; S205. Generate a surface and add a boundary to meet the size of the project area; S206. Simplify the original surface and generate a three-dimensional original terrain surface.

6. The operating method of the application system of BIM technology in mountainous highway grading according to claim 2 is characterized in that: Step S3 includes: S301. Define points P1 and P2 as the control points of the road center line and the side line, and set the initial slope of P2; S302. Pull the Link definition line L1 in Geomentry to connect P1 and P2, and design L; S303. Similarly, define P4 and P5, and define L3, L4, and L5 to generate the road cross-section model.

7. The operating method of the application system of BIM technology in mountainous highway grading according to claim 2 is characterized in that: Step S4 includes: S401. Define P1 as the origin of slope release; S402. And define double-precision variables s1, hv, and smv; where s1 is defined as IF; hv is defined as IF(P1.DISTANCETOSURFACE; smv is defined as IF; S403. Pull the Decision module as the determination of multi-level slopes and single-level slopes, and the determination condition is math.abs<H1 or math.abs=H1; when the terrain meets the single-level slope, it will be automatically sloped according to the regulations, otherwise the program enters the multi-level slope on the right; S404. If the terrain does not meet the single-level slope, the program enters the multi-level slope, re-determines, and sets a berm L9 at the first-level slope and judges whether it is a full-width berm, and the determination condition is set to P2.DISTANCETOSURFACE*AP2.DISTANCETOSURFACE<0, and then starts from AP2 as shown in the following figure; S405. Similar to S403 and S404, pull the Decision module again starting from P3 to determine whether it is a multi-level slope and generate a berm, and repeat this process to create a three-level slope system; S406. End the visual programming and export the component.

8. The operating method of the application system of BIM technology in mountainous highway grading according to claim 2 is characterized in that: Step S5 includes: S501. Create a horizontal linear and a vertical linear according to the designed road; S502. Load the road and slope components compiled in Part 4; S503. Generate the road; S504. Generate the left / right slope and set the step size; S505. Generate the road surface and slope surface models; S506. Merge the road surface and the slope surface to generate a complete surface, and perform cut and fill analysis; S507. Perform cut and fill analysis on the road + slope surface and the original terrain surface; S508. Cut and fill analysis, where red represents cut and blue represents fill, and the deeper the color, the greater the cut and fill volume; S509. When adjusting the slope parameters, call out the property bar and modify the corresponding parameters, and the model will be modified联动, and the same is true for adjusting the road cross slope / longitudinal slope / horizontal linear.

9. The operating method of the application system of BIM technology in mountainous highway grading according to claim 2 is characterized in that: Step S6 includes: S601. Divide the construction area; S602. And calculate according to different construction areas.

10. The application of BIM technology in the slope reduction of mountainous roads is characterized by: The application system of BIM technology in the slope release of mountain highways as described in claim 1 is applied to the field of engineering construction, especially in the field of virtual engineering design and construction.

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