CN111597608A - Bridge BIM model crack belt parameter visualization creation method based on crack contour family - Google Patents
Bridge BIM model crack belt parameter visualization creation method based on crack contour family Download PDFInfo
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Abstract
The invention discloses a bridge BIM model crack belt parameter visualization establishing method based on a crack contour group, which comprises the following steps: (1) collecting crack information on site, and classifying the cracks according to the occurrence positions and the shape trends of the cracks; (2) creating a fracture contour family according to the actual fracture form; (3) and (3) creating a BIM (building information modeling) model of the main beam, loading a crack outline family file, realizing the fusion of the crack outline family and the BIM component, and reflecting the actual occurrence position and form of the crack. Compared with the prior art, the method can effectively realize visualization and positioning of the bridge crack diseases. In addition, the crack group contains characteristic parameter information such as crack length, width, depth and the like, so that the method can realize efficient and accurate visual management of the crack diseases with parameters.
Description
Technical Field
The invention belongs to the field of structure detection and BIM visualization, and relates to a BIM crack classification visualization creation method for a bridge, in particular to a BIM model crack zone parameter classification visualization creation method for a bridge based on a crack contour family.
Background
Cracks are the most common diseases in concrete bridge structures, the reasons for the occurrence of the cracks are complex, and the damage caused by the cracks is serious. The cause of the occurrence of cracks includes shrinkage and expansion caused by ambient temperature in addition to live load. The occurrence of cracks not only directly reduces the structural rigidity, but also aggravates the corrosion of stressed steel bars and the degradation of materials, thereby remarkably reducing the durability of the structure. The influence of cracks on the performance of the bridge is manifold, firstly, the influence on the service performance of the bridge further influences the normal use of the bridge, and the bearing capacity of the bridge is reduced due to the serious cracking problem, so that the safety performance of the bridge is influenced; secondly, the influence on the durability and the service life of the bridge. The significance of bridge crack information monitoring mainly lies in: and (3) timely mastering the health state of the bridge structure: the safety and the durability of the bridge structure are directly reduced by cracking, the whole process of the change of the bridge structure can be tracked by monitoring the bridge crack information, and timely response is made accordingly. In addition, special requirements of certain operation stages can be met: in actual engineering, due to the structural characteristics (such as a container structure) of a concrete bridge and the environmental characteristics (such as a water environment and a corrosion environment) of the concrete bridge, the structure is required not to be permitted to crack, and the bridge crack information monitoring can effectively prevent the collapse influence of the crack on the structure.
Due to the particularity and the important traffic throat status of the bridge structure, frequent inspection needs to be carried out on key bearing components of the bridge structure, huge cost is undoubtedly needed for large-range high-frequency inspection, meanwhile, the massive crack information of a large number of components generated by multiple inspection only needs to be written, and an effective visualization method is urgently needed to improve the visualization display and the rapid parameterization query function of crack diseases.
Disclosure of Invention
The invention aims to solve the technical problem of providing a bridge BIM model crack zone parameter visualization establishing method based on a crack contour family aiming at the defects of the prior art, and the method can realize the crack image generated according to the real crack form and faithfully reflect the position of the crack, thereby realizing the rapid visualization display and query. In addition, the method can perform high-precision simulation on the width of the crack, which is not provided by the conventional method.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a bridge BIM model crack belt parameter visualization creating method based on a crack contour family comprises the following steps:
(1) the method comprises the following steps of (1) carrying out on-site collection and classification on cracks, and classifying the cracks according to the positions of the cracks and the shapes of the cracks;
(2) creating a fracture contour family according to the actual fracture form; the fracture profile family comprises information such as fracture shape, fracture length, fracture width, fracture depth and the like;
(3) and (3) creating a BIM (building information modeling) model of the main beam, loading a crack outline family file, realizing the fusion of the crack outline family and the BIM component, and reflecting the actual occurrence position and form of the crack.
Preferably, step (1) includes:
(1.1) dividing the crack into a bottom plate crack, a web plate crack and a diaphragm plate crack according to the crack position information acquired and recorded on site; dividing the crack into a transverse crack, a vertical crack, a longitudinal crack and an oblique crack according to the trend and the shape of the crack, and simultaneously recording the length parameter and the width parameter information of the crack.
Preferably, step (2) comprises:
(2.1) newly building a contour family file in BIM software, selecting a metric contour in a family template file rft, then introducing a crack image, then selecting a straight line command in a creation module, and drawing the shape of the crack by using a spline curve;
(2.2) adjusting the spline curve to enable the length of the line segment connected from the head to the tail of the crack shape curve to be in accordance with the length of the crack, and enabling the shape curve to be consistent with the actual crack through scaling;
(2.3) copying a spline curve, wherein the copied distance is the actual width of the crack, realizing visualization realization of the crack width, connecting two crack shape lines by using the spline curve, and connecting geometric shapes to form a closed crack outline so as to obtain a crack outline group containing the width;
and (2.4) marking the length and width parameters of the crack.
Preferably, step (3) includes:
(3.1) changing the family type of the main beam, namely changing a metric structure frame-beam and support-rft into a metric structure foundation-rft, numbering each main beam in the BIM model project of the original bridge, and managing the crack information by taking the main beam as a unit;
(3.2) selecting a corresponding main beam in the BIM model project of the original bridge according to the actual position of the crack, editing the main beam member, and then loading the main beam member into a crack contour group;
(3.3) selecting a working plane, selecting a floor plane for the web cracks and the diaphragm cracks, and selecting a vertical plane for the bottom plate cracks; and selecting a hollow shape-hollow lofting fusion command in the creation module, drawing a path on the girder member along the width direction of the crack, wherein the path length is the crack depth, and finally obtaining the girder family with the crack.
Compared with the prior art, the invention has the following beneficial effects:
(1) the operation is simple, and the thought is clear: the invention discloses a bridge BIM model crack classification visualization establishing method of a crack contour group. The method mainly comprises the steps of generating a multi-segment line fracture profile family file according to actual fracture morphology features, and then accurately simulating the fracture morphology by methods of scaling, positioning, copying and the like. The method has strong reproducibility and is convenient for wide popularization and application.
(2) The reaction characteristics are comprehensive: the method is used for carrying out visual modeling on the bridge cracks based on the crack contour group, and can realize accurate positioning of the position and high-precision simulation of morphological characteristics due to fine positioning and scaling of the crack contour group. In addition, a multi-segment line copying method based on the maximum width of the crack is introduced for the first time, and the visual simulation of the crack width is realized. Therefore, comprehensive simulation and visual display of multi-parameter and multi-feature such as crack width, length, shape, position and the like can be realized.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Fig. 2(a) is a photograph of an in-situ crack.
Fig. 2(b) is a graph of a multi-step profile corresponding to an in-situ crack photograph.
Fig. 3(a) is a visualization and labeling diagram of the fracture length contour family.
Fig. 3(b) is a visualization and labeling diagram of the crack width contour family.
FIG. 4 is a schematic view of a profile family embedded BIM bridge member.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the embodiment of the invention discloses a bridge BIM model crack zone parameter visualization creating method based on a crack contour family, which mainly comprises the following steps:
step 10): and (4) acquiring crack information on site, and classifying according to the occurrence position and the shape trend of the crack so as to facilitate the subsequent crack positioning work.
Step 20): a family of contours is newly created in the BIM software, a "metric contour" in the family template file is selected rft ", then the fracture image is imported, and then a" straight line "command in the" create "module is selected to trace out the fracture shape with a" spline curve ". And adjusting the spline curve, wherein the length of the line segment connected from the head to the tail of the crack shape curve conforms to the length of the crack. And selecting a crack shape curve, and selecting a scaling command in a modification module to enable the length of the head-tail line segment of the crack shape curve to accord with the actual length of the crack. Then, a spline curve is copied, the copied distance is the actual width of the crack, the visualization realization of the crack width is realized, the spline curve is used for connecting two crack shape lines, and the connecting geometric shapes form a closed crack outline to obtain a crack outline group. And then marking the length and width parameter information to complete the creation of the contour family.
Step 30): the family type of the main beam is changed from a metric structure frame, namely a beam and a support, rft, to a metric structure foundation, rft, and each main beam in the BIM model project of the original bridge is numbered, and the crack information is managed by taking the main beam as a unit. And selecting a corresponding main beam in the BIM project of the original bridge according to the actual position of the crack, editing the main beam, and loading the main beam into a crack contour family. And selecting a working plane, wherein the working plane selects a floor plane for the web cracks and the diaphragm cracks, and selects a vertical plane for the bottom plate cracks. And selecting a hollow shape-hollow lofting fusion command in the 'creating' module, drawing a path along the width direction of the crack, wherein the path length is the crack depth, and finally obtaining the girder family with the crack.
Example 1:
the concrete implementation process of the invention is described by the BIM model crack visualization implementation process of the appearance inspection result of the crack of the prestressed concrete combined main girder bridge of the Shashi river in Jiangsu province.
(1) And classifying the cracks according to the appearance inspection result, wherein the box girder web oblique cracks are shown in figure 2 (a).
(2) A family of contours is newly built in BIM Revit software, a ' metric contour ' in a family template file is selected rft ', then a crack image is imported, and then a ' straight line ' command in a ' creation ' module is selected to draw the shape of the crack by a ' spline curve '. Then, adjusting a spline curve, wherein the length of a line segment connected with the first position of the crack shape curve conforms to the length of the crack, the shape curve is consistent with the actual crack through scaling, and the shape of the adjusted crack is as shown in a figure 2 (b);
(3) and copying a spline curve, wherein the copied distance is the actual maximum width of the crack, realizing the visual simulation of the crack width, connecting two crack shape lines by using the spline curve, and connecting the geometric shapes to form a closed crack outline so as to obtain a complete crack outline group. Finally, the crack parameter information is marked, including length parameter information and width parameter information, as shown in fig. 3(a) and 3 (b).
(4) Changing the family type of the box girder, changing 'metric structure frame-girder and support' rft 'into' metric structure foundation 'rft', numbering each box girder in the original bridge BIM model project, and managing the crack information by taking the box girder as a unit; and selecting a corresponding box girder in the original bridge BIM model project according to the actual position of the crack, and editing the box girder. Loading a crack profile family file, selecting a working plane, selecting a floor plane for a web crack and a diaphragm crack, and selecting a vertical plane for a bottom plate crack. And selecting a hollow shape-hollow lofting fusion command in the 'creating' module, drawing a path along the width direction of the crack, wherein the path length is the crack depth, and finally obtaining the BIM model of the box girder family with the crack, as shown in FIG. 4.
The above embodiments are merely further illustrative of the present invention, and various modifications and substitutions of equivalent forms to those skilled in the art after reading the embodiments of the present invention are within the scope of the present invention as defined in the appended claims.
Claims (5)
1. A bridge BIM model crack belt parameter visualization creating method based on a crack contour family is characterized by comprising the following steps:
(1) collecting crack information on site, and classifying the cracks according to the occurrence positions and the shape trends of the cracks;
(2) creating a fracture contour family according to the actual fracture form;
(3) and (3) creating a BIM (building information modeling) model of the main beam, loading a crack outline family file, realizing the fusion of the crack outline family and the BIM component, and reflecting the actual occurrence position and form of the crack.
2. The crack contour family-based bridge BIM model crack zone parameter visualization creation method according to claim 1, characterized in that the step (1) comprises:
(1.1) dividing the crack into a bottom plate crack, a web plate crack and a diaphragm plate crack according to the crack position information acquired and recorded on site; dividing the crack into a transverse crack, a vertical crack, a longitudinal crack and an oblique crack according to the trend and the shape of the crack, and simultaneously recording the length parameter and the width parameter information of the crack.
3. The crack contour family-based bridge BIM model crack zone parameter visualization creation method of claim 1, wherein the crack contour family in the step (2) contains crack shape information, crack length information, crack width information and crack depth information.
4. The crack contour family-based bridge BIM model crack zone parameter visualization creation method according to claim 1, characterized in that the step (2) comprises:
(2.1) newly building a contour group file in BIM software, selecting a metric contour in a group template file rft, introducing a crack image, selecting a straight line command in a creation module, and drawing a crack shape by using a spline curve;
(2.2) adjusting the spline curve to enable the length of the line segment connected from the head to the tail of the crack shape curve to be in accordance with the length of the crack, and enabling the shape curve to be consistent with the actual crack through scaling;
(2.3) copying a spline curve, wherein the copied distance is the actual width of the crack, realizing visualization realization of the crack width, connecting two crack shape lines by using the spline curve, and connecting geometric shapes to form a closed crack outline so as to obtain a crack outline group containing the width; and simultaneously adding crack length and width parameter labels.
5. The crack contour family-based bridge BIM model crack zone parameter visualization creation method according to claim 1, characterized in that: the step (3) comprises the following steps:
(3.1) changing the family type of the main beams in the BIM model project of the original bridge, numbering each main beam in the BIM model project of the original bridge, and managing the crack information by taking the main beam as a unit;
(3.2) selecting a corresponding main beam in the BIM model project of the original bridge according to the actual position of the crack, editing the main beam member, and then loading the main beam member into a crack contour group;
(3.3) selecting a working plane, selecting a floor plane for the web cracks and the diaphragm cracks, and selecting a vertical plane for the bottom plate cracks; and drawing a path on the girder member along the width direction of the crack, wherein the path length is the depth of the crack, and finally obtaining the girder family with the crack.
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| CN116380935A (en) * | 2023-06-02 | 2023-07-04 | 中南大学 | High-speed railway box girder damage detection robot car and damage detection method |
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