CN110968904B - BIM technology-based method for calculating shape and earth volume of earth excavation side slope - Google Patents
BIM technology-based method for calculating shape and earth volume of earth excavation side slope Download PDFInfo
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Abstract
The invention relates to a BIM (building information modeling) technology-based method for calculating the shape of an earth excavation side slope and the amount of earth, which belongs to the application of computer technology and comprises the steps of applying three-dimensional modeling and analyzing the shape of the side slope and the amount of earth based on BIM software.
Description
Technical Field
The invention relates to the technical field of computer technology application, in particular to a BIM technology-based method for calculating the shape and the earth volume of an earth excavation slope.
Background
The existing earthwork excavation is completely carried out with slope range determination and square quantity calculation according to CAD two-dimensional drawings and excavation experience. When complicated-shape earthwork excavation is met or layered excavation is needed, the calculation cannot accurately reflect the shape of the excavated foundation pit, and the accurate earthwork amount cannot be calculated in time to guide subsequent construction.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a method for calculating the shape and the volume of the earthwork excavation slope based on the BIM technology, which can find problems in the process of simulating the excavation of a foundation pit based on the BIM, timely adjust the range and the shape of the excavation slope and acquire more appropriate relevant data for construction, so that the construction can be rapidly and accurately carried out, and the accuracy and the efficiency of calculating the volume of the complicated-shaped or layered excavation foundation pit can be improved.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the method for calculating the shape and the earth volume of the earth excavation side slope based on the BIM technology comprises the following operation steps:
(1) Based on a construction drawing, carrying out layer classification on excavation surfaces with different areas/layering depths on a CAD (computer-aided design), recording depth information, and forming a CAD excavation line file;
(2) Guiding the CAD excavation line file into a BIM system, roughly simulating excavation construction and unearthed lines, and if regional excavation calculation is carried out, processing the excavation range line of the foundation pit at the adjacent or overlapped part; if the excavation is layered, performing overlapping area side line integration treatment layer by layer from the bottommost layer; optimizing the excavation sideline with the depth information to form a BIM excavation sideline information file;
(3) Carrying out preliminary foundation pit modeling on the BIM excavation line file, simulating excavation construction and unearthing routes again, locally adjusting a slope coefficient, carrying out three-dimensional layering on the excavation foundation pits according to the slope coefficient, and establishing three-dimensional models of a plurality of excavation surfaces and a plurality of construction interface layers to form a BIM side slope model file;
(4) Releasing each region/layer of side slope by using a BIM modeling technology, integrating the side slopes which are mutually covered again in the process, and simulating the range change of the side slope of the foundation pit and the layered excavation construction; adjusting the side slope position of the partitioned/layered excavation construction interface to obtain the optimal slope surface jointed with the complex excavation plane, and forming a BIM side slope optimization file;
(5) Establishing an earthwork materialization model according to the optimized side slope by using a BIM modeling technology;
(6) The map layer information is arranged in a partitioned mode/layered mode, the model volume of each region/layer is the actual earthwork excavation volume, and the model volume is used as a construction scheme compiling basis;
(7) And (5) carrying out slope-releasing excavation according to the construction scheme and the construction drawing obtained in the step (6).
Further, in the step (6), the area of each region and the overexcavation portion are intuitively grasped by performing area layering projection on the model of each region/layer.
Further, the method carries out three-dimensional modeling on the shape of the foundation pit in the earth excavation process, and carries out dynamic simulation on the three-dimensional model used in the earth layered excavation process based on the BIM.
Furthermore, the method is suitable for the integration of the slopes of the complex foundation pits.
The invention has the following advantages: the invention aims to provide an earthwork calculation method based on BIM, which carries out three-dimensional modeling on the shape of a foundation pit in the earthwork excavation process, carries out dynamic simulation on three-dimensional models for the earthwork layered excavation process based on BIM, and provides data support for construction by continuously adjusting the side slope position, the earthwork quantity relation and the like of the three-dimensional models of the excavated foundation pit, so that the construction meets the requirement, no great difference exists in technical effect, and the construction requirement is met.
The invention can find problems in the process of simulating foundation pit excavation based on BIM, adjust the range and the shape of the excavated side slope in time, and acquire more appropriate relevant data for construction, so that the construction can be carried out quickly and accurately. The method comprises the steps of applying three-dimensional modeling and analyzing the shape of the side slope and the earth volume based on BIM software, belongs to the application of computer technology, and can improve the accuracy and efficiency of calculating the volume of complex-shaped or layered excavation foundation pits.
Drawings
FIG. 1 is a pictorial depiction of a field edge on a CAD drawing of the present invention.
Fig. 2 is a schematic perspective layered view of the present invention.
Fig. 3 is a schematic view of the integrated mutual coverage highwall of the present invention.
FIG. 4 is a schematic diagram of establishing an earthwork materialization model according to the present invention.
Fig. 5 is a schematic diagram of hierarchical arrangement layer information according to the present invention.
FIG. 6 is a schematic view of a layered projection of the contaminated soil area of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
According to the project of field investigation result display in the early stage, the pollutant range side line of each layer is complex, the projection side lines are staggered, and the slope placing range and the layered earth volume of each layer are conveniently counted by using the BIM-based earth excavation side slope shape and earth volume calculation method.
The method for calculating the layered earth volume is described in parts:
the method comprises the following steps: dividing each layer of field boundary into drawing layers on the CAD drawing (figure 1);
step two: performing sideline processing layer by layer from the bottommost layer, and performing three-dimensional layering (fig. 2);
step three: releasing each layer of side slope by using a BIM modeling technology according to the processed line, and integrating the mutually covered side slopes again in the process to ensure that the shallow excavation range is larger than the deep excavation range (figure 3);
step four: establishing an earthwork materialized model according to the side slope by using a BIM modeling tool (figure 4);
step five: layer information is arranged in layers, and the model volume of each layer is the actual earthwork excavation volume (figure 5);
step six: making a layered projection (green part) of the area of the polluted soil on each layer, and visually grasping the polluted area and the overexcavation part of each layer (figure 6);
step seven: list earth volume calculation table
| Soil layer | Area of pollution (, square meter) | Contaminated earthwork (m) | Excavation earthwork (m) | Super-excavated earthwork (m) |
| 0.0-0.5 | 2663.3609 | 1331.68045 | 3899.6156 | 2567.93515 |
| 0.5-1.0 | 6839.9776 | 3419.9888 | 3813.3679 | 393.3791 |
| 1.0-1.5 | 6475.1122 | 3237.5561 | 3404.9675 | 167.4114 |
| 1.5-2.0 | 3920.0967 | 1960.04835 | 2133.1797 | 173.13135 |
| 2.0-2.5 | 2982.6943 | 1491.34715 | 1635.2316 | 143.88445 |
| 2.5-3.0 | 2518.4317 | 1259.21585 | 1349.3176 | 90.10175 |
| 3.0-3.5 | 1006.6888 | 503.3444 | 532.6185 | 29.2741 |
| 3.5-4.0 | 646.9221 | 323.46105 | 333.2603 | 9.79925 |
| Is totaled | 13526.64215 | 17101.5587 | 3574.91655 |
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, it is intended that all such modifications and alterations be included within the scope of this invention as defined in the appended claims.
Claims (4)
1. The method for calculating the shape and the earth volume of the earth excavation side slope based on the BIM technology is characterized by comprising the following operation steps of:
(1) Based on a construction drawing, carrying out layer classification on excavation surfaces with different areas/layering depths on a CAD (computer-aided design), recording depth information, and forming a CAD excavation line file;
(2) Guiding the CAD excavation line file into a BIM system, roughly simulating excavation construction and unearthed lines, and if regional excavation calculation is carried out, processing the excavation range line of the foundation pit at the adjacent or overlapped part; if the excavation is layered, performing overlapping area side line integration treatment layer by layer from the bottommost layer; optimizing the excavation sideline with the depth information to form a BIM excavation line information file;
(3) Carrying out preliminary foundation pit modeling on the BIM excavation line file, simulating excavation construction and unearthing routes again, locally adjusting a slope coefficient, carrying out three-dimensional layering on the excavation foundation pits according to the slope coefficient, and establishing three-dimensional models of a plurality of excavation surfaces and a plurality of construction interface layers to form a BIM side slope model file;
(4) Releasing each region/layer of side slope by using a BIM modeling technology, integrating the side slopes which are mutually covered again in the process, and simulating the range change of the side slope of the foundation pit and the layered excavation construction; adjusting the side slope position of the partitioned/layered excavation construction interface to obtain the optimal slope surface jointed with the complex excavation plane, and forming a BIM side slope optimization file;
(5) Establishing an earthwork materialization model according to the optimized side slope by using a BIM modeling technology;
(6) The map layer information is arranged in a partitioned mode/layered mode, the model volume of each region/layer is the actual earthwork excavation volume, and the model volume is used as a construction scheme compiling basis;
(7) And (5) carrying out slope-releasing excavation according to the construction scheme and the construction drawing obtained in the step (6).
2. The BIM technology-based method for calculating the shape and the earth volume of the earth excavation slope according to claim 1, wherein the BIM technology-based method comprises the following steps: in the step (6), the area of each layer and the overbreak part are intuitively grasped aiming at the area layering projection on the model of each area/each layer.
3. The BIM technology-based earth excavation slope shape and earth volume calculation method according to claim 1, characterized in that: the method is characterized in that the three-dimensional modeling is carried out on the shape of a foundation pit in the earth excavation process, and the three-dimensional model for the earth layered excavation process is dynamically simulated based on the BIM.
4. The BIM technology-based earth excavation slope shape and earth volume calculation method according to claim 1, characterized in that: the method is suitable for the integration of the complex foundation pit slope.
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| CN111460565A (en) * | 2020-04-15 | 2020-07-28 | 中国十七冶集团有限公司 | BIM technology-based foundation construction optimization method |
| CN111651823A (en) * | 2020-06-05 | 2020-09-11 | 中建八局轨道交通建设有限公司 | BIM technology-based foundation pit earth excavation amount calculation method |
| CN112699442B (en) * | 2021-01-04 | 2024-04-30 | 中国建筑第八工程局有限公司 | Soil and stone excavation efficiency calculation method based on three-dimensional modeling |
| CN113609543A (en) * | 2021-07-27 | 2021-11-05 | 上海建工一建集团有限公司 | Multi-connected water collecting well map building method based on BIM technology |
| CN113832978B (en) * | 2021-10-09 | 2023-03-17 | 中交三航局第三工程有限公司 | Tuff slope anti-weathering excavation method |
| CN115787380A (en) * | 2022-12-07 | 2023-03-14 | 中国十七冶集团有限公司 | Municipal road earthwork balance system based on BIM |
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