CN107808414B - Method for excavating virtual foundation pit with three-dimensional integration of ground and underground - Google Patents
Method for excavating virtual foundation pit with three-dimensional integration of ground and underground Download PDFInfo
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Abstract
The invention discloses an underground and aboveground three-dimensional integrated virtual foundation pit excavation method, which belongs to the field of geographic spatial information.
Description
Technical Field
The invention belongs to the field of geographic spatial information, and particularly relates to an underground and overground three-dimensional integrated virtual foundation pit excavation method.
Background
A geographic information system is a particular spatial information system of great importance. The system is a technical system for collecting, storing, managing, operating, analyzing, displaying and describing the relevant geographic distribution data of the whole or partial earth surface space under the support of a computer hardware and software system. The three-dimensional geographic information system combines the traditional two-dimensional geographic information system by a three-dimensional visualization technology, and provides a more visual visualization effect and a space query analysis function for a user in a three-dimensional visualization scene.
The ground and underground three-dimensional integration is to integrate ground and underground three-dimensional model data such as ground buildings, ground surface roads, ground surface fields, underground pipelines, underground spaces, engineering geology and the like in a three-dimensional geographic information system, and to express the spatial position and the spatial relationship of various data by using a three-dimensional scene.
The existing virtual foundation pit excavation method can only excavate one type of three-dimensional model data, but cannot integrate and overlay the relevant environment around the construction project for virtual excavation analysis, so that an overground and underground integrated virtual excavation method capable of comprehensively integrating and virtually excavating three-dimensional data models such as buildings, terrain, roads, underground pipelines, underground spaces and the like around a construction project site is needed, and better provides analysis service for preliminary design of the construction project.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a method for simulating excavation of a foundation pit in a three-dimensional visualization environment.
In order to achieve the aim, the invention provides an underground and aboveground three-dimensional integrated virtual foundation pit excavation method, which is characterized by comprising the following steps of:
step one, constructing a foundation pit excavation surface;
step two, executing virtual excavation;
step three, integrating virtual excavation results;
the foundation pit excavation surface construction in the first step is carried out according to the following steps:
a1, determining a range line of a foundation pit excavation plane;
a2, determining the excavation depth of the foundation pit, and determining the excavation depth through the elevation of the bottom surface of the foundation pit;
a3, constructing a foundation pit excavation surface; and constructing a top surface range side line and a bottom surface range side line by using the foundation pit excavation plane range line and the foundation pit excavation depth. For the side line of the range of the bottom surface, a triangular net is constructed by clockwise connecting points on the side line, and the construction of the foundation pit excavation surface of the bottom surface is completed; connecting points on the top surface side line and the bottom surface side line clockwise at intervals to construct a triangular net, and completing construction of a foundation pit excavation surface of the side wall;
in the second step, the virtual excavation is performed according to the following steps:
b1, according to whether the three-dimensional data are in the top surface range line, performing no excavation on the three-dimensional data which are not in the top surface range line, and keeping the original state of the three-dimensional data; performing excavation on the three-dimensional data in the top surface range line, directly performing intersection analysis on the excavation surface of the foundation pit and the original triangular surface forming the data, performing intersection processing on the three-dimensional data through the excavation surface of the foundation pit, cutting the triangular surface of the three-dimensional original data through the excavation side wall surface of the foundation pit, dividing the three-dimensional original data into an inner surface and an outer surface of the excavation range of the foundation pit along the side wall, deleting the inner surface, and keeping the outer surface;
and B2, visually and integrally displaying the outer surface of the retained three-dimensional data and the side wall foundation pit excavation surface and the bottom surface foundation pit excavation surface generated in the step one, so that the three-dimensional foundation pit effect after excavation is obtained.
Preferably, the virtual excavation achievement in the third step integrates the following steps:
and C1, combining the existing three-dimensional data resources, sequentially arranging the vertical relations of the three-dimensional building model, the three-dimensional field model, the three-dimensional road model, the three-dimensional underground pipeline model, the three-dimensional engineering geological model and the three-dimensional underground space model from the ground to the ground, executing virtual excavation by using the method in the step two, and superposing and displaying the excavation effect of the foundation pit according to the original vertical relations of the three-dimensional building model, the three-dimensional field model, the three-dimensional road model, the three-dimensional underground pipeline model, the three-dimensional engineering geological model and the three-dimensional underground space model sequentially from the ground to the ground, namely finishing the integration of the integrated virtual excavation results of the ground and the underground.
The invention has the beneficial effects that: the invention can realize an integrated underground and overground virtual excavation method which can comprehensively integrate and perform virtual excavation on three-dimensional data models such as buildings, terrain, roads, underground pipelines, underground spaces and the like around a constructed engineering site according to the requirements of users on understanding the current situation of the site and the underground such as the site and the roads for municipal facility management, engineering construction survey and the like.
Drawings
FIG. 1 is a schematic flow diagram of an embodiment of the present invention.
Fig. 2 is a schematic diagram of constructing an excavation surface of a foundation pit.
FIG. 3 is a schematic diagram of virtual pit excavation performed by three-dimensional data of buildings, terrain and roads.
FIG. 4 is a schematic diagram of virtual pit excavation executed by the engineering geological three-dimensional data.
Fig. 5 is a schematic diagram of a virtual foundation pit excavation effect under a three-dimensional visual environment.
Fig. 6 is a schematic diagram of a virtual foundation pit excavation effect under a three-dimensional visual environment.
Fig. 7 is a schematic diagram of the excavation effect of the virtual foundation pit under the three-dimensional visual environment.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1, in order to achieve the above object, the present invention provides an excavation method of an underground and aboveground three-dimensional integrated virtual foundation pit, which is characterized by comprising the following steps:
step one, constructing a foundation pit excavation surface;
step two, executing virtual excavation;
step three, integrating virtual excavation results;
the foundation pit excavation surface construction in the first step is carried out according to the following steps:
a1, determining a range line of a foundation pit excavation plane;
a2, determining the excavation depth of the foundation pit, and determining the excavation depth through the elevation of the bottom surface of the foundation pit;
a3, constructing a foundation pit excavation surface; and constructing a top surface range side line and a bottom surface range side line by using the foundation pit excavation plane range line and the foundation pit excavation depth. For the side line of the range of the bottom surface, a triangular net is constructed by clockwise connecting points on the side line, and the construction of the foundation pit excavation surface of the bottom surface is completed; connecting points on the top surface side line and the bottom surface side line clockwise at intervals to construct a triangular net, and completing construction of a foundation pit excavation surface of the side wall; in the second step, the virtual excavation is performed according to the following steps:
b1, according to whether the three-dimensional data are in the top surface range line, performing no excavation on the three-dimensional data which are not in the top surface range line, and keeping the original state of the three-dimensional data; performing excavation on the three-dimensional data in the top surface range line, directly performing intersection analysis on the excavation surface of the foundation pit and the original triangular surface forming the data, performing intersection processing on the three-dimensional data through the excavation surface of the foundation pit, cutting the triangular surface of the three-dimensional original data through the excavation side wall surface of the foundation pit, dividing the three-dimensional original data into an inner surface and an outer surface of the excavation range of the foundation pit along the side wall, deleting the inner surface, and keeping the outer surface;
and B2, visually and integrally displaying the outer surface of the retained three-dimensional data and the side wall foundation pit excavation surface and the bottom surface foundation pit excavation surface generated in the step one, so that the three-dimensional foundation pit effect after excavation is obtained.
Preferably, the virtual excavation achievement in the third step integrates the following steps:
and C1, combining the existing three-dimensional data resources, sequentially arranging the vertical relations of the three-dimensional building model, the three-dimensional field model, the three-dimensional road model, the three-dimensional underground pipeline model, the three-dimensional engineering geological model and the three-dimensional underground space model from the ground to the ground, executing virtual excavation by using the method in the step two, and superposing and displaying the excavation effect of the foundation pit according to the original vertical relations of the three-dimensional building model, the three-dimensional field model, the three-dimensional road model, the three-dimensional underground pipeline model, the three-dimensional engineering geological model and the three-dimensional underground space model sequentially from the ground to the ground, namely finishing the integration of the integrated virtual excavation results of the ground and the underground.
As shown in fig. 2, a schematic view of constructing an excavation surface of a foundation pit is shown.
As shown in fig. 3, a schematic diagram of performing virtual pit excavation on three-dimensional data of buildings, terrains and roads is shown.
As shown in fig. 4, a schematic diagram of performing virtual pit excavation on the engineering geological three-dimensional data is shown.
As shown in fig. 5, a schematic diagram of the excavation effect of the virtual foundation pit in the three-dimensional visual environment is shown, and the geological condition in the foundation pit can be seen after the virtual excavation of the engineering construction site.
As shown in fig. 6, a schematic diagram of the excavation effect of the virtual foundation pit in the three-dimensional visual environment is shown, and the spatial position relations of geology, underground pipelines, underground garages, ground buildings and the like in the foundation pit can be seen after the virtual excavation of the engineering construction site.
As shown in fig. 7, a schematic diagram of the excavation effect of the virtual foundation pit in the three-dimensional visual environment is shown, and the spatial position relationship and the trend of various underground pipelines in the foundation pit can be seen after the virtual excavation of the engineering construction site.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (1)
1. The excavation method of the underground and aboveground three-dimensional integrated virtual foundation pit is characterized by comprising the following steps of:
step one, constructing a foundation pit excavation surface;
step two, executing virtual excavation;
step three, integrating virtual excavation results;
the foundation pit excavation surface construction in the first step is carried out according to the following steps:
a1, determining a range line of a foundation pit excavation plane;
a2, determining the excavation depth of the foundation pit, and determining the excavation depth through the elevation of the bottom surface of the foundation pit;
a3, constructing a foundation pit excavation surface; constructing a top surface range side line and a bottom surface range side line by using the excavation plane range line of the foundation pit and the excavation depth of the foundation pit; for the side line of the range of the bottom surface, a triangular net is constructed by clockwise connecting points on the side line, and the construction of the foundation pit excavation surface of the bottom surface is completed; connecting points on the top surface side line and the bottom surface side line clockwise at intervals to construct a triangular net, and completing construction of a foundation pit excavation surface of the side wall;
in the second step, the virtual excavation is performed according to the following steps:
b1, according to whether the three-dimensional data are in the top surface range line, performing no excavation on the three-dimensional data which are not in the top surface range line, and keeping the original state of the three-dimensional data; performing excavation on the three-dimensional data in the top surface range line, directly performing intersection analysis on the excavation surface of the foundation pit and the original triangular surface forming the data, performing intersection processing on the three-dimensional data through the excavation surface of the foundation pit, cutting the triangular surface of the three-dimensional original data through the excavation side wall surface of the foundation pit, dividing the three-dimensional original data into an inner surface and an outer surface of the excavation range of the foundation pit along the side wall, deleting the inner surface, and keeping the outer surface;
b2, visually and integrally displaying the outer surface of the retained three-dimensional data and the side wall foundation pit excavation surface and the bottom surface foundation pit excavation surface generated in the first step to obtain the effect of the excavated three-dimensional foundation pit;
in the third step, the virtual excavation achievement is integrated and carried out by the following steps:
and C1, combining the existing three-dimensional data resources, sequentially arranging the vertical relations of the three-dimensional building model, the three-dimensional field model, the three-dimensional road model, the three-dimensional underground pipeline model, the three-dimensional engineering geological model and the three-dimensional underground space model from the ground to the ground, executing virtual excavation by using the method in the step two, and superposing and displaying the excavation effect of the foundation pit according to the original vertical relations of the three-dimensional building model, the three-dimensional field model, the three-dimensional road model, the three-dimensional underground pipeline model, the three-dimensional engineering geological model and the three-dimensional underground space model sequentially from the ground to the ground, namely finishing the integration of the integrated virtual excavation results of the ground and the underground.
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CN108597021B (en) * | 2018-04-20 | 2022-03-11 | 武汉地大信息工程股份有限公司 | Integrated display method and system for three-dimensional models above and below ground |
CN111241611B (en) * | 2018-11-27 | 2023-07-28 | 星际空间(天津)科技发展有限公司 | Method for assisting foundation pit implementation |
CN109712233B (en) * | 2018-12-27 | 2023-07-04 | 华自科技股份有限公司 | Pipeline fault display method, system, AR equipment and storage medium |
CN113919035A (en) * | 2021-08-04 | 2022-01-11 | 中铁九局集团第七工程有限公司 | BIM and GIS-based electronic sand table construction method and system |
CN114611190A (en) * | 2022-03-14 | 2022-06-10 | 国核示范电站有限责任公司 | Three-dimensional excavation analysis method, device, equipment and storage medium |
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