CN113256809A - Engineering earth volume calculation method of seabed immersed tube tunnel foundation trench based on BIM - Google Patents
Engineering earth volume calculation method of seabed immersed tube tunnel foundation trench based on BIM Download PDFInfo
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- 238000012876 topography Methods 0.000 claims description 5
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Abstract
The invention belongs to the technical field of dredging engineering, in particular to a method for calculating engineering earth volume of a submarine immersed tube tunnel foundation trench based on BIM, which comprises the following steps: s1, establishing a submarine terrain surface before dredging; s2, establishing a three-dimensional basic groove central line; s3, establishing a parameterized cross section template library; s4, establishing a base groove model; s5, outputting the engineering earthwork amount of the foundation trench; compared with traditional method for calculating the earthwork of dredging engineering such as a section method, the method utilizes BIM software to calculate the engineering earthwork, obviously improves the calculation efficiency under the condition of ensuring the calculation precision, and is suitable for calculating the earthwork of long-strip-shaped linear engineering such as foundation trench excavation and channel dredging; the calculation efficiency can be obviously improved by designing linear engineering with complex structure, such as dredging engineering for designing channel foundation tanks with complex and large number of construction cross sectional diagrams, irregular central lines and a plurality of slope changing points.
Description
Technical Field
The invention relates to the technical field of dredging engineering, in particular to a BIM-based engineering earth volume calculation method for a submarine immersed tube tunnel foundation trench.
Background
The volume of the dredged and excavated earth is used as an important basis for acceptance check of the dredging project, a multi-beam sounding system is often adopted to measure the submarine topography throughout the whole construction period, a water depth data file containing space three-dimensional coordinate information is output, and the volume of the dredging project earth is calculated by a section method.
The method is visual, easy to understand and simple to calculate, the field is divided into a plurality of square grids, the elevations of four angular points of each grid are actually measured or interpolated in the field, the earthwork of the surface of each grid is calculated (a four-prism method), and the sum of the earthwork amount of each grid is the total earthwork amount; but the integrity of the intermediate data is poor, the workload is large for complex terrain, and the precision is low.
The geometric surface domain method is suitable for projects with higher precision requirements, the method describes the spatial distribution of the landform and the landform of a measuring area from a differential angle, a triangular net is constructed by utilizing actual measuring points, and earthwork is calculated for the calculating area according to a triangular prism method; the calculation accuracy is high, and the field measurement points are required to accurately reflect the topographic detail characteristics and topographic transformation characteristics; but the intermediate data integrity is poor.
The dredging engineering usually adopts a multi-beam sounding system to measure the submarine topography, outputs a water depth data file containing space three-dimensional coordinate information, and calculates the earthwork volume of the dredging engineering by a section method; for dredging projects with different slope ratios and complicated design structures including straight line segments, curve segments and the like on the central line, in order to ensure the calculation precision, a section method is adopted to calculate and draw numerous cross section measuring lines through interpolation to calculate the excavation project amount of foundation trenches, the repeated workload is large, and the calculation time consumption is long.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problems that the section method needs interpolation calculation to draw numerous cross section measuring lines to calculate the excavation engineering quantity of the foundation trench, the repeated workload is large, and the calculation time consumption is long, the invention provides a BIM-based engineering earthwork quantity calculation method of the foundation trench of the submarine immersed tube tunnel.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a BIM-based engineering earth volume calculation method for a foundation trench of a submarine immersed tube tunnel, which adopts the technical scheme that the method comprises the following steps:
s1, establishing a submarine terrain surface before dredging;
s2, establishing a three-dimensional basic groove central line;
s3, establishing a parameterized cross section template library;
s4, establishing a base groove model;
and S5, outputting the engineering earthwork amount of the foundation trench.
Preferably, the S1 includes the following steps:
s11: and establishing a dredging front seabed terrain surface, importing a TXT text format water depth data file, and generating the dredging front seabed terrain surface.
Preferably, the S2 includes the following steps:
and S21, copying the center line of the two-dimensional foundation trench, referring to the design construction plan, and copying the center line of the two-dimensional foundation trench containing the plane coordinate information consistent with the design.
And S22, establishing a three-dimensional basic groove center line, giving elevation information to the two-dimensional basic groove center line, and generating the three-dimensional basic groove center line.
Preferably, the S3 includes the following steps:
and S31, dividing the foundation grooves according to the number of the variable slope points, and dividing the foundation grooves in the pile number interval with the same number of the adjacent variable slope points into the same section according to the design construction plan of the foundation grooves.
And S32, drawing a parameterized cross-sectional template, and drawing the parameterized cross-sectional template of the section by referring to a typical design construction cross-sectional drawing of the foundation trench of each pile number interval.
And S33, drawing the parameterized cross-section templates of other pile number intervals by adopting the method, and establishing a parameterized cross-section template library.
Preferably, the step S4 includes the steps of:
and S41, stretching the parameterized cross-section template, and stretching the selected parameterized cross-section template along the center line of the three-dimensional base groove of the corresponding pile number interval to form a corresponding design interface.
S42, parameterizing to adjust the position of the variable slope point, adjusting the space position of the variable slope point by using a point control function, keeping the space position consistent with the design, and establishing a foundation trench model of the pile number interval based on the work.
And S43, establishing a complete foundation trench model, establishing foundation trench models of other pile number intervals by adopting the method, and establishing the complete foundation trench model.
Preferably, the S5 includes the following steps:
and S51, dividing boundaries according to construction requirements, and creating each region boundary needing to independently output the earth volume on the foundation trench model.
And S52, creating a grid, and converting a closed area formed by the submarine topography curved surface before dredging and the design interface into the grid.
And S53, counting the engineering earth volume according to the divided areas and the report form.
The invention has the advantages that:
1. the method has high calculation efficiency and precision, and the principle of the method is that the cross section template is stretched along the three-dimensional central line of the foundation trench, the spatial position of each slope changing point is adjusted according to the foundation trench design construction plan, a three-dimensional solid model consistent with the design is formed, and the engineering quantity is output; the repeated operation generated by drawing cross section survey lines by adopting a section method to calculate the engineering quantity and needing a large amount of interpolation calculation is greatly reduced, and the calculation precision is improved;
2. the method has strong applicability, and is suitable for the engineering quantity calculation of long-strip-shaped linear engineering such as foundation trench excavation, channel dredging and the like;
3. the method has the advantages of good visualization effect and complete intermediate process data, and the method outputs the engineering quantity based on the three-dimensional model, and has better visualization effect and clear intermediate process data.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a flow chart of a method for calculating engineering quantity of a foundation trench of a submarine immersed tube tunnel based on BIM;
FIG. 2 is a schematic view of a pre-dredging seafloor terrain established in an embodiment of the present invention;
FIG. 3 is a schematic representation of a replicated two-dimensional base groove centerline in an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating information about elevation and pile number assigned to a two-dimensional trench center line in accordance with an embodiment of the present invention;
FIG. 5 is a schematic diagram of dividing the basic grooves according to the number of the variable slope points in the embodiment of the present invention;
FIG. 6 is a schematic diagram of drawing a parameterized cross-sectional template in an embodiment of the invention;
FIG. 7 is a schematic drawing of a stretch parametric cross-sectional template in an embodiment of the invention;
FIG. 8 is a schematic diagram illustrating a position of a variable slope point with parameterization adjustment according to an embodiment of the present invention;
FIG. 9-a is a schematic view of the completion of all the elongated cross section templates and parametric adjustments in an embodiment of the present invention;
FIG. 9-b is a schematic view of a complete base groove model in an embodiment of the present invention;
FIG. 10 is a schematic diagram of a partition boundary according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of creating a grid in an embodiment of the present invention;
FIG. 12 is a schematic diagram of the output foundation trench engineering earth volume in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the engineering earth volume calculation method of the seabed immersed tube tunnel foundation trench based on the BIM according to the present invention includes the following steps:
s1, establishing a submarine terrain surface before dredging;
s2, establishing a three-dimensional basic groove central line;
s3, establishing a parameterized cross section template library;
s4, establishing a base groove model;
and S5, outputting the engineering earthwork amount of the foundation trench.
The specific embodiment is as follows:
the foundation trench of a submarine immersed tube tunnel has 65 design cross sections with different parameters and slopes with different slope ratios of 1:0, 1:0.75, 1:1.5, 1:3, 1:5, 1:7 and the like, the central line of the foundation trench is a three-dimensional space curve comprising a straight line segment and an irregular curve segment, and the foundation trench is divided into 19 segments according to the number of slope changing points according to a foundation trench design construction plan; drawing a corresponding parameterized cross-section template by referring to a typical design construction cross-section diagram selected from each section based on a BIM platform, stretching the cross-section template along a central line, adjusting the spatial position of each side slope point by referring to a design plan diagram, and establishing a foundation trench model of the section; and repeating the method to establish a complete foundation trench model.
As shown in fig. 2, the S1 includes the following steps:
s11: and establishing a dredging front seabed terrain surface, importing a TXT text format water depth data file, and generating the dredging front seabed terrain surface.
As shown in fig. 3 to 4, the S2 includes the following steps:
and S21, copying the center line of the two-dimensional foundation trench, referring to the design construction plan, and copying the center line of the two-dimensional foundation trench containing the plane coordinate information consistent with the design.
And S22, establishing a three-dimensional basic groove center line, giving elevation information to the two-dimensional basic groove center line, and generating the three-dimensional basic groove center line.
As shown in fig. 5 to 6, the step S3 includes the following steps:
and S31, dividing the foundation grooves according to the number of the variable slope points, and dividing the foundation grooves in the pile number interval with the same number of the adjacent variable slope points into the same section according to the design construction plan of the foundation grooves.
S32, drawing a parameterized cross section template, drawing the parameterized cross section template by referring to a typical design cross section of a foundation trench of each pile number interval, setting a variable slope point at the top end of the template as a constraint condition of 'checking interception', 'placing a point at the interception position', 'infinite end condition', namely, the variable slope point at the top end of the template extends upwards and infinitely, and terminates to a ground surface, and identifying a closed area surrounded below the ground surface and above a design interface as an excavated body.
And S33, drawing the parameterized cross-section templates of other pile number intervals by adopting the method, and establishing a parameterized cross-section template library.
As shown in fig. 7-8, 9-a and 9-b, the step S4 includes the following steps:
and S41, stretching the parameterized cross-section template, and stretching the selected parameterized cross-section template along the center line of the bottom of the three-dimensional base groove of the corresponding pile number interval to form a corresponding design interface.
S42, parameterizing to adjust the position of the variable slope point, adjusting the horizontal distance between the variable slope point and the center line of the foundation trench by using a point control function, adjusting the vertical distance of the variable slope point along with the slope ratio, wherein the space position of the variable slope point is consistent with the design, and the enclosure body formed by the part below the surface of the seabed ground before dredging and above the design interface is the foundation trench model of the pile number interval.
And S43, establishing a complete foundation trench model, and establishing foundation trench models of other pile number intervals by adopting the method to form the complete foundation trench model.
As shown in fig. 10 to 12, the S5 includes the following steps:
and S51, dividing boundaries, wherein the immersed tunnel foundation trench comprises 32 pipe sections in total, and creating the boundaries of the pipe sections on the foundation trench model according to the pile numbers of the pipe sections.
S52, creating a grid, adjusting the bottom grid of the design interface to be a displayable mode, converting a closed area formed by the submarine topography curved surface before dredging and the design boundary surface into the grid, wherein the grid has a volume attribute.
And S53, outputting the engineering earth volume. And outputting the engineering earth volume of each pipe joint of the foundation trench in a table form.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (6)
1. A engineering earth volume calculation method of a seabed immersed tube tunnel foundation trench based on BIM is characterized in that: the technical scheme comprises the following steps:
s1, establishing a submarine terrain surface before dredging;
s2, establishing a three-dimensional basic groove central line;
s3, establishing a parameterized cross section template library;
s4, establishing a base groove model;
and S5, outputting the engineering earthwork amount of the foundation trench.
2. The engineering earth volume calculation method of the foundation trench of the seabed immersed tube tunnel based on the BIM as claimed in claim 1, wherein: the S1 includes the steps of:
s11: and establishing a dredging front seabed terrain surface, importing a TXT text format water depth data file, and generating the dredging front seabed terrain surface.
3. The engineering earth volume calculation method of the foundation trench of the seabed immersed tube tunnel based on the BIM as claimed in claim 2, wherein: the S2 includes the steps of:
and S21, copying the center line of the two-dimensional foundation trench, referring to the design construction plan, and copying the center line of the two-dimensional foundation trench containing the plane coordinate information consistent with the design.
And S22, establishing a three-dimensional basic groove center line, giving elevation information to the two-dimensional basic groove center line, and generating the three-dimensional basic groove center line.
4. The engineering earth volume calculation method of the foundation trench of the seabed immersed tube tunnel based on the BIM as claimed in claim 3, wherein: the S3 includes the steps of:
and S31, dividing the foundation grooves according to the number of the variable slope points, and dividing the foundation grooves in the pile number interval with the same number of the adjacent variable slope points into the same section according to the design construction plan of the foundation grooves.
And S32, drawing a parameterized cross-sectional template, and drawing the parameterized cross-sectional template of the section by referring to a typical design construction cross-sectional drawing of the foundation trench of each pile number interval.
And S33, drawing the parameterized cross-section templates of other pile number intervals by adopting the method, and establishing a parameterized cross-section template library.
5. The engineering earth volume calculation method of the foundation trench of the seabed immersed tube tunnel based on the BIM as claimed in claim 4, wherein: the S4 includes the steps of:
and S41, stretching the parameterized cross-section template, and stretching the selected parameterized cross-section template along the center line of the three-dimensional base groove of the corresponding pile number interval to form a corresponding design interface.
S42, parameterizing to adjust the position of the variable slope point, adjusting the space position of the variable slope point by using a point control function, keeping the space position consistent with the design, and establishing a foundation trench model of the pile number interval based on the work.
And S43, establishing a complete foundation trench model, establishing foundation trench models of other pile number intervals by adopting the method, and establishing the complete foundation trench model.
6. The engineering earth volume calculation method of the foundation trench of the seabed immersed tube tunnel based on the BIM as claimed in claim 5, wherein: the S5 includes the steps of:
and S51, dividing boundaries according to construction requirements, and creating each region boundary needing to independently output the earth volume on the foundation trench model.
And S52, creating a grid, and converting a closed area formed by the submarine topography curved surface before dredging and the design interface into the grid.
And S53, counting the engineering earth volume according to the divided areas and the report form.
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| CN114741770A (en) * | 2022-04-28 | 2022-07-12 | 中铁长江交通设计集团有限公司 | Dredging section structure based on Civil3D and template creating method |
| CN114861287A (en) * | 2022-06-30 | 2022-08-05 | 墨斗(天津)科技有限公司 | BIM-based parametric design method for open excavation section of tunnel structure |
| CN115952588A (en) * | 2023-03-13 | 2023-04-11 | 中交第四航务工程勘察设计院有限公司 | BIM model-based variable slope stratum dredging excavation calculation method and system |
| CN116739534A (en) * | 2023-08-14 | 2023-09-12 | 中交广州航道局有限公司 | Navigation channel construction management method and system based on BIM and Beidou high-precision positioning technology |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114741770A (en) * | 2022-04-28 | 2022-07-12 | 中铁长江交通设计集团有限公司 | Dredging section structure based on Civil3D and template creating method |
| CN114741770B (en) * | 2022-04-28 | 2023-04-07 | 中铁长江交通设计集团有限公司 | Dredging section structure based on Civil3D and template establishing method |
| CN114861287A (en) * | 2022-06-30 | 2022-08-05 | 墨斗(天津)科技有限公司 | BIM-based parametric design method for open excavation section of tunnel structure |
| CN114861287B (en) * | 2022-06-30 | 2022-10-28 | 墨斗(天津)科技有限公司 | BIM-based tunnel structure open cut section parametric design method |
| WO2024037121A1 (en) * | 2022-08-19 | 2024-02-22 | 中交广州航道局有限公司 | Complex geological immersed tube tunnel foundation trench soil-distinguished over- and under-excavation analysis method and apparatus |
| CN115952588A (en) * | 2023-03-13 | 2023-04-11 | 中交第四航务工程勘察设计院有限公司 | BIM model-based variable slope stratum dredging excavation calculation method and system |
| CN116739534A (en) * | 2023-08-14 | 2023-09-12 | 中交广州航道局有限公司 | Navigation channel construction management method and system based on BIM and Beidou high-precision positioning technology |
| CN117688791A (en) * | 2024-02-04 | 2024-03-12 | 中铁四局集团有限公司 | Modeling calculation method, modeling calculation device, modeling calculation platform and modeling calculation storage medium for tunnel construction process |
| CN117688791B (en) * | 2024-02-04 | 2024-04-30 | 中铁四局集团有限公司 | Modeling calculation method, modeling calculation device, modeling calculation platform and modeling calculation storage medium for tunnel construction process |
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