CN115130170A - Steel truss bridge construction monitoring method and system based on three-dimensional laser scanning and BIM - Google Patents
Steel truss bridge construction monitoring method and system based on three-dimensional laser scanning and BIM Download PDFInfo
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Abstract
The invention provides a steel truss bridge construction monitoring method and a system based on three-dimensional laser scanning and BIM, relating to the technical field of bridge engineering, and the method comprises the following steps: s1: obtaining a preset BIM model by adopting Revit modeling according to a design drawing, and carrying out an actual component manufacturing stage of the drawing; s2: carrying out first preset three-dimensional laser scanning on an actual component to obtain corresponding point cloud data; processing the point cloud data to obtain a point cloud BIM model; s3: and comparing and analyzing the preset BIM model and the point cloud BIM model, and calculating the difference value of the control point coordinates of the components in the two models. The method can overcome the defect that monitoring points are arranged at key positions for monitoring the deformation of the steel truss bridge steel structure by the traditional measurement technology, only single data can be acquired, and the dynamic monitoring can not be carried out on the whole bridge construction process.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a steel truss bridge construction monitoring method and system based on three-dimensional laser scanning and BIM.
Background
With the rapid development of the economy and the great improvement of the steel yield in China and the advantages of the steel bridge, the steel bridge develops rapidly in China, but the proportion of the steel structure bridge is still low.
As one of typical steel bridges, a steel truss bridge has a complex node structure, most steel structures are exposed, and the steel truss bridge needs to be designed in consideration of meeting aesthetic requirements. In recent years, the design of the steel truss bridge has the characteristics of complexity and diversity, and higher requirements are provided for the design means, the expression form and the accuracy degree. However, due to the shortcomings of the traditional information technology application means for monitoring the construction of the steel truss bridge, the ideal monitoring level cannot be achieved. How to rapidly, efficiently and accurately implement the dynamic monitoring of the whole bridge construction process is still a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention solves the problem of how to overcome the defect that the traditional measurement technology can only acquire single data and can not dynamically monitor the whole process of bridge construction when monitoring the deformation of the steel truss bridge by arranging monitoring points at key positions.
In order to solve the problems, the invention provides a steel truss bridge construction monitoring method based on three-dimensional laser scanning and BIM, which comprises the following steps:
s1: obtaining a preset BIM model by adopting Revit modeling according to a design drawing, and carrying out an actual component manufacturing stage of the drawing;
s2: carrying out first preset three-dimensional laser scanning on an actual component to obtain corresponding point cloud data; processing the point cloud data to obtain a point cloud BIM model;
s3: comparing and analyzing a preset BIM model and a point cloud BIM model, calculating a difference value of control point coordinates of components in the two models, and performing a virtual pre-assembly stage if the allowable error of the components is met; if the error is larger than the allowable error range of the component, modifying the component, and re-measuring the modified component for quality detection until the allowable error of the component is met;
s4: performing second preset three-dimensional laser scanning on the components meeting the quality detection to obtain corresponding point cloud data and performing a virtual pre-assembly stage;
s5: performing field construction based on a splicing report obtained in the virtual pre-splicing stage;
s6: and marking the parts or processes with quality problems, packaging and storing the parts or processes to the background server.
The method comprises four stages of component manufacturing, virtual pre-assembly, site construction and engineering delivery, wherein two technologies of three-dimensional laser scanning and BIM are applied, point cloud data obtained by scanning of three-dimensional laser is processed through specific professional software, a corresponding point cloud BIM model is further obtained, and dynamic monitoring on the whole process of bridge construction is realized by combining the BIM technology and the characteristics of steel truss construction nodes.
Further, the step S4 includes:
s41: carrying out three-dimensional laser scanning on the component again on the component transportation site to obtain point cloud data of the component splicing unit;
s42: aligning the point cloud data of the assembly units and performing virtual assembly; obtaining splicing errors and adjustment information required to be modified; if the error is within the allowable range, forming a corresponding splicing report according to engineering requirements; if the error is larger than the allowable range, repeating the modification and the simulated assembly of the components until the error meets the allowable range.
Further, the step S5 includes:
s51: carrying out three-dimensional laser scanning on the axis and the height difference of the steel truss bridge in the construction process, and modifying the BIM in real time according to the construction requirement;
s52: and comparing the obtained point cloud BIM model with a preset BIM model in real time, monitoring the deviation of the height difference of the steel truss and the axis, and repeatedly modifying the BIM model and scanning the three-dimensional laser to meet the requirement that the error of the height difference and the axis is within an allowable range.
Further, the step S6 includes:
s61: carrying out quality inspection and acceptance on the bridge; analyzing and remedying the quality problems, and collecting and arranging relevant data of the quality problems;
s62: marking the part or process with quality problem in the BIM model; and packaging the judgment of the quality problem and the corresponding processing method to obtain data information for preventing the bridge quality problem and storing the data information to a background server.
Steel truss bridge construction monitored control system based on three-dimensional laser scanning and BIM includes:
a component manufacturing module: the method comprises the steps of obtaining a preset BIM model by adopting Revit modeling according to a design drawing, and carrying out an actual component manufacturing stage of the drawing;
a scanning module: the system comprises a first laser scanning module, a second laser scanning module, a third laser scanning module, a fourth laser scanning module and a fourth laser scanning module, wherein the first laser scanning module is used for carrying out first preset three-dimensional laser scanning on an actual component to obtain corresponding point cloud data; processing the point cloud data to obtain a point cloud BIM model;
an adjusting module: the point cloud BIM virtual pre-assembly stage is used for carrying out comparative analysis on a preset BIM model and the point cloud BIM model, calculating the difference value of control point coordinates of components in the preset BIM model and the point cloud BIM model, and carrying out virtual pre-assembly if the allowable error of the components is met; if the error is larger than the allowable error range of the component, modifying the component, and re-measuring the modified component for quality detection until the allowable error of the component is met;
virtual pre-assembly module: a second preset three-dimensional laser scanning is carried out on the components meeting the quality detection to obtain corresponding point cloud data, and a virtual pre-assembly stage is carried out;
the field construction adjusting module: the system is used for carrying out on-site construction according to the splicing report obtained in the virtual pre-splicing stage;
an engineering delivery module: and the system is used for labeling, packaging and storing the parts or the working procedures with quality problems to a background server.
Further, the virtual pre-assembly module comprises:
a first scanning unit: the system is used for carrying out three-dimensional laser scanning on the component again on the component transportation site to obtain point cloud data of the component splicing unit;
a first judgment unit: the system is used for aligning the point cloud data of the assembly units and performing virtual assembly; obtaining splicing errors and adjustment information required to be modified; if the error is within the allowable range, forming a corresponding splicing report according to engineering requirements; if the error is larger than the allowable range, repeating the modification and the simulated assembly of the components until the error meets the allowable range.
Further, the on-site construction adjustment module includes:
a second scanning unit: the device is used for carrying out three-dimensional laser scanning on the axis and the height difference of the steel truss bridge in the construction process and modifying the BIM in real time according to the construction requirement;
a second judgment unit: the device is used for comparing the obtained point cloud BIM model with a preset BIM model in real time, monitoring the deviation of the height difference of the steel truss and the axis, and repeatedly modifying the BIM model and scanning the three-dimensional laser to meet the condition that the error of the height difference and the axis is within an allowable range.
Further, the engineering delivery module comprises:
an acceptance unit: the quality inspection and acceptance are carried out on the bridge; analyzing and remedying the quality problems, and collecting and arranging relevant data of the quality problems;
a packaging storage unit: a part or process for marking the BIM model with quality problems; and packaging the judgment of the quality problem and the corresponding processing method to obtain data information of the data for preventing the bridge quality problem and storing the data information to a background server.
The technical scheme adopted by the invention at least comprises the following beneficial effects:
the invention combines the BIM technology and the three-dimensional laser scanning technology, realizes the integration of component processing quality detection, virtual assembly, real-time monitoring and quality inspection through four stages of component manufacturing, virtual pre-assembly, site construction and engineering delivery, provides a basis for construction adjustment and decision, and provides guarantees for construction quality, construction safety, construction progress, closure precision and the like. The defect of structural deformation is reflected on the whole, and the dynamic monitoring of the whole bridge construction process is implemented quickly, efficiently and accurately.
Drawings
Fig. 1 is a first flowchart of a method for monitoring construction of a steel truss bridge based on three-dimensional laser scanning and BIM according to a first embodiment of the present invention;
fig. 2 is a flowchart of a second method for monitoring construction of a steel truss bridge based on three-dimensional laser scanning and BIM according to a first embodiment of the present invention;
fig. 3 is a flow chart of a steel truss bridge construction monitoring method based on three-dimensional laser scanning and BIM according to an embodiment of the present invention;
fig. 4 is a first structural diagram of a steel truss bridge construction monitoring system based on three-dimensional laser scanning and BIM according to a second embodiment of the present invention;
fig. 5 is a second structural diagram of a bridge construction monitoring system based on three-dimensional laser scanning and BIM according to a second embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
The embodiment provides a steel truss bridge construction monitoring method based on three-dimensional laser scanning and BIM, as shown in fig. 1 to 3, the method includes the steps of:
s1: obtaining a preset BIM model by adopting Revit modeling according to a design drawing, and carrying out an actual component manufacturing stage of the drawing;
s2: carrying out first preset three-dimensional laser scanning on an actual component to obtain corresponding point cloud data; processing the point cloud data to obtain a point cloud BIM model;
s3: comparing and analyzing a preset BIM model and a point cloud BIM model, calculating a difference value of control point coordinates of components in the two models, and performing a virtual pre-assembly stage if the allowable error of the components is met; if the error is larger than the allowable error range of the component, modifying the component, and re-measuring the modified component for quality detection until the allowable error of the component is met;
s4: a second preset three-dimensional laser scanning is carried out on the components meeting the quality detection to obtain corresponding point cloud data, and a virtual pre-assembly stage is carried out;
s5: performing field construction based on a splicing report obtained in the virtual pre-splicing stage;
s6: and marking the parts or processes with quality problems, packaging and storing the parts or processes to the background server.
The method comprises four stages of component manufacturing, virtual pre-assembly, site construction and engineering delivery, wherein two technologies of three-dimensional laser scanning and BIM are applied, point cloud data obtained by scanning of three-dimensional laser is processed through specific professional software, a corresponding point cloud BIM model is obtained, and dynamic monitoring on the whole process of bridge construction is realized by combining the BIM technology and the characteristics of steel truss construction nodes.
Specifically, in the component manufacturing stage: firstly, a BIM model is obtained by modeling according to the existing design drawing by using Revit software, and a theoretical design model is provided for subsequent comparison. And secondly, manufacturing a component according to a designed drawing, and performing three-dimensional laser scanning and measurement on the component by using a three-dimensional laser scanner to realize the virtualization of a real object, namely converting the real object component into point cloud data. And then, introducing the acquired point cloud data by using SCENE software as a point cloud data preprocessing platform to generate a point cloud model file which accords with the later BIM application, and further introducing the point cloud model file into Revit software to form a point cloud BIM. Comparing and analyzing a theoretically designed BIM model (namely a preset BIM model) and a point cloud BIM model, calculating the difference value of the coordinates of the control points of the components in the two models, and performing error analysis by referring to 4.6 in the railway industry Standard TB 10212-. If the allowable error of the component is met, the next stage of virtual assembly is carried out, if the error is larger than the allowable range of the component, data is collected to analyze the problem and correct the component, and the repaired component is measured again to carry out quality detection until the requirement is met.
Referring to fig. 2 and 3, step S4 includes:
s41: carrying out three-dimensional laser scanning on the component again on the component transportation site to obtain point cloud data of the component splicing unit;
s42: aligning the point cloud data of the assembly units and performing virtual assembly; obtaining splicing errors and adjustment information required to be modified; if the error is within the allowable range, forming a corresponding splicing report according to engineering requirements; if the error is larger than the allowable range, repeating the component modification and the simulated assembly until the error meets the allowable range.
Specifically, in the virtual pre-assembly stage: on the basis of the completion of the component manufacturing stage. And (3) transporting the component on the site, wherein the component generates errors between defects and the component due to factors such as collision, extrusion and the like in the transportation process, and then performing three-dimensional laser scanning on the component again to obtain point cloud data of the splicing point of the component. And aligning the point cloud models of the assembly units by using Geomagic Qualify software to carry out virtual assembly to obtain assembly errors and adjustment information required to be modified, and carrying out assembly error analysis by referring to 9.3 in Steel Structure engineering construction quality inspection Standard GB50205-2020, wherein for example, the allowable deviation of the dislocation of the axes of the rod pieces at the nodes of the beams and the trusses is 4.0 mm. And if the splicing error is met, obtaining a corresponding splicing report according to engineering requirements to guide subsequent construction, and if the error is large and within an allowable range, modifying and simulating the splicing through necessary repeated components until the precision requirement is met.
Wherein, step S5 includes:
s51: carrying out three-dimensional laser scanning on the axis and the height difference of the steel truss bridge in the construction process, and modifying the BIM in real time according to the construction requirement;
s52: and comparing the obtained point cloud BIM model with a preset BIM model in real time, monitoring the deviation of the height difference of the steel truss and the axis, and repeatedly modifying the BIM model and scanning the three-dimensional laser to meet the requirement that the error of the height difference and the axis is within an allowable range.
Specifically, in the field construction stage: the method is carried out on the basis of finishing the component manufacturing stage and the virtual pre-assembly stage. And performing field construction based on a splicing report obtained in the virtual pre-splicing stage, performing three-dimensional laser scanning on the axis and the height difference of the steel truss bridge in the construction process, processing the point cloud data obtained by scanning by using SCENE software to generate a point cloud model file applied by BIM in the later period, and then further importing the point cloud model file into Revit software to form a point cloud BIM. And comparing the obtained point cloud BIM model with the original BIM model in real time, monitoring the deviation of the height difference and the axis of the steel truss, and performing necessary repeated BIM model modification and three-dimensional laser scanning according to the requirements of 10.4 and 10.5 in the Steel Structure engineering construction quality acceptance Standard GB50205-2020 to ensure that the error between the height difference and the axis is within an allowable range, for example, the allowable deviation of the height difference of the top surfaces of two ends of the same beam is L/1000mm and not more than 10.0mm, when the steel truss is installed on a concrete column, the deviation of the support center to the positioning axis is not more than 10mm, and finally guiding the construction to close up a bridge.
Wherein, step S6 includes:
s61: carrying out quality inspection and acceptance on the bridge; analyzing and remedying the quality problems, and collecting and arranging relevant data of the quality problems;
s62: marking the part or the process with the quality problem in the BIM model; and packaging the judgment of the quality problem and the corresponding processing method to obtain data information for preventing the bridge quality problem and storing the data information to a background server.
Specifically, in the project delivery stage: based on the completion of the three stages, the quality of the bridge is checked and accepted, then the reasons of the quality problems are analyzed, remedial measures are taken, relevant data of the quality problems are collected and sorted, the parts or procedures of the quality problems are marked in the BIM model, and finally, similar judgment and processing methods and experiences of the quality problems are accumulated, so that data and methods are provided for the construction and quality management of the steel truss bridge in the future.
The three-dimensional laser scanning technology comprises the following steps: the three-dimensional laser scanning technology is also called as live-action replication technology, and is a technical revolution following the GPS technology in the mapping field. The method breaks through the traditional single-point measurement method, has the unique advantages of high efficiency and high precision, and saves time, labor and cost. The three-dimensional laser scanner emits a large number of laser beams to an object to be measured by utilizing a laser ranging principle, receives a reflected signal, calculates three-dimensional coordinates of surface points of the object to be measured, and records information such as reflectivity, texture and the like, so that point cloud data is obtained, and therefore the three-dimensional laser scanner can be used for obtaining a high-precision high-resolution digital model.
Wherein, BIM technique: the core of BIM is to provide a complete building engineering information base consistent with the actual situation for a virtual building engineering three-dimensional model by establishing the model and utilizing the digital technology. The information base not only contains geometrical information, professional attributes and state information describing building components, but also contains state information of non-component objects (such as space and motion behaviors). By means of the three-dimensional model containing the construction engineering information, the information integration degree of the construction engineering is greatly improved, and therefore a platform for engineering information exchange and sharing is provided for related interest parties of the construction engineering project.
Wherein, Geomagic Qualify software: the software may enable discrepancy detection between a computer-aided design (CAD) model of a product and a manufactured part of the product. And the difference between the two is displayed as an intuitive and easily understood graphical comparison result. The Geomagic Qualify can be used for first-part inspection of products, inspection on a production line or in a workshop, trend analysis, two-dimensional and three-dimensional geometric shape dimension marking and can automatically generate formatted reports.
The SCENE software is three-dimensional scanning data processing software which can well process, simplify, splice and the like three-dimensional SCENEs acquired by the FARO scanner.
Wherein, Revit software: name of a suite of software by Autodesk corporation. The Revit series software is constructed for a Building Information Model (BIM) and can help architects to design, build and maintain buildings with better quality and higher energy efficiency.
The data bases of the three-dimensional laser scanning technology and the BIM technology are real point cloud data and a BIM model respectively. The conventional BIM model is a theoretical model based on a drawing, cannot truly reflect the actual state of a building like three-dimensional point cloud, and in the construction of a bridge, the development and the change of related work need basic data of the actual situation on site as a basis, so that the requirements can be met just by the occurrence of the three-dimensional point cloud data, and the defects of the BIM model are greatly overcome. The method combines three-dimensional laser and BIM technology, realizes the visual comparison of the construction deviation of the bridge member by the synchronous characteristic comparison of an actual point cloud BIM and a theoretical BIM point cloud model (namely a preset BIM model), namely realizes the multi-use of the BIM model, avoids the problem of abstraction of the deviation detection result, and solves the problem of the detection and construction deviation of the member by the traditional method.
The method combines the BIM technology and the three-dimensional laser scanning technology, realizes the integration of component processing quality detection, virtual assembly, real-time monitoring and quality inspection through four stages of component manufacturing, virtual pre-assembly, site construction and engineering delivery, provides a basis for construction adjustment and decision, and provides guarantees for construction quality, construction safety, construction progress, closure precision and the like. The defect of structural deformation is reflected on the whole, and the dynamic monitoring of the whole bridge construction process is rapidly, efficiently and accurately implemented.
Example two
This embodiment provides steel truss bridge construction monitored control system based on three-dimensional laser scanning and BIM, as shown in fig. 4 and 5, this system includes:
a component manufacturing module: the method comprises the steps of obtaining a preset BIM model by Revit modeling according to a design drawing, and carrying out actual component manufacturing stage of the drawing;
a scanning module: the system comprises a first laser scanning module, a second laser scanning module, a third laser scanning module, a fourth laser scanning module and a fourth laser scanning module, wherein the first laser scanning module is used for carrying out first preset three-dimensional laser scanning on an actual component to obtain corresponding point cloud data; processing the point cloud data to obtain a point cloud BIM model;
an adjusting module: the system comprises a point cloud BIM model, a virtual pre-assembly stage and a virtual pre-assembly stage, wherein the point cloud BIM model is used for carrying out comparison analysis on a preset BIM model and the point cloud BIM model, calculating the difference value of control point coordinates of components in the preset BIM model and the point cloud BIM model, and carrying out virtual pre-assembly if the difference value meets the allowable error of the components; if the error is larger than the allowable error range of the component, modifying the component, and re-measuring the modified component for quality detection until the allowable error of the component is met;
virtual pre-assembly module: a second preset three-dimensional laser scanning is carried out on the components meeting the quality detection to obtain corresponding point cloud data, and a virtual pre-assembly stage is carried out;
the field construction adjusting module: the system is used for carrying out on-site construction according to the splicing report obtained in the virtual pre-splicing stage;
an engineering delivery module: and the system is used for labeling, packaging and storing the parts or the working procedures with quality problems to a background server.
Referring to fig. 5, the virtual pre-assembly module includes:
a first scanning unit: the system is used for carrying out three-dimensional laser scanning on the component again on the component transportation site to obtain point cloud data of the component splicing unit;
a first judgment unit: the system is used for aligning point cloud data of the assembly units and performing virtual assembly; obtaining splicing errors and adjustment information required to be modified; if the error is within the allowable range, forming a corresponding splicing report according to engineering requirements; if the error is larger than the allowable range, repeating the component modification and the simulated assembly until the error meets the allowable range.
Wherein, site operation adjustment module includes:
a second scanning unit: the device is used for carrying out three-dimensional laser scanning on the axis and the height difference of the steel truss bridge in the construction process and modifying the BIM in real time according to the construction requirement;
a second judgment unit: the device is used for comparing the obtained point cloud BIM model with a preset BIM model in real time, monitoring the deviation of the height difference of the steel truss and the axis, and repeatedly modifying the BIM model and scanning the three-dimensional laser to meet the condition that the error of the height difference and the axis is within an allowable range.
Wherein, the engineering delivery module includes:
an acceptance unit: the quality inspection and acceptance are carried out on the bridge; analyzing and remedying the quality problems, and collecting and arranging relevant data of the quality problems;
a packaging storage unit: a part or process for marking the BIM model with quality problems; and packaging the judgment of the quality problem and the corresponding processing method to obtain data information of the data for preventing the bridge quality problem and storing the data information to a background server.
The system combines the BIM technology and the three-dimensional laser scanning technology through the component manufacturing module, the virtual pre-assembly module, the field construction adjusting module and the engineering delivery module, realizes the integration of component processing quality detection, virtual assembly, real-time monitoring and quality inspection through four stages of component manufacturing, virtual pre-assembly, field construction and engineering delivery, provides basis for construction adjustment and decision, and provides guarantee for construction quality, construction safety, construction progress, closure precision and the like. The defect of structural deformation is reflected on the whole, and the dynamic monitoring of the whole bridge construction process is rapidly, efficiently and accurately implemented.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.
Claims (8)
1. The steel truss bridge construction monitoring method based on three-dimensional laser scanning and BIM is characterized by comprising the following steps of:
s1: obtaining a preset BIM model by adopting Revit modeling according to a design drawing, and carrying out an actual component manufacturing stage of the drawing;
s2: carrying out first preset three-dimensional laser scanning on an actual component to obtain corresponding point cloud data; processing the point cloud data to obtain a point cloud BIM model;
s3: comparing and analyzing a preset BIM model and a point cloud BIM model, calculating a difference value of control point coordinates of components in the two models, and performing a virtual pre-assembly stage if the allowable error of the components is met; if the component tolerance is larger than the component tolerance range, modifying the component, and re-measuring the modified component for quality detection until the component tolerance is met;
s4: a second preset three-dimensional laser scanning is carried out on the components meeting the quality detection to obtain corresponding point cloud data, and a virtual pre-assembly stage is carried out;
s5: performing field construction based on a splicing report obtained in the virtual pre-splicing stage;
s6: and marking the parts or processes with quality problems, packaging and storing the parts or processes to the background server.
2. The method for monitoring construction of steel truss bridge based on three-dimensional laser scanning and BIM as claimed in claim 1, wherein the step S4 comprises:
s41: carrying out three-dimensional laser scanning on the component again on the component transportation site to obtain point cloud data of the component splicing unit;
s42: aligning the point cloud data of the assembly units and performing virtual assembly; obtaining splicing errors and adjustment information required to be modified; if the error is within the allowable range, forming a corresponding splicing report according to engineering requirements; if the error is larger than the allowable range, repeating the component modification and the simulated assembly until the error meets the allowable range.
3. The method for monitoring construction of steel truss bridge based on three-dimensional laser scanning and BIM as claimed in claim 1, wherein the step S5 comprises:
s51: carrying out three-dimensional laser scanning on the axis and the height difference of the steel truss bridge in the construction process, and modifying the BIM in real time according to the construction requirement;
s52: and comparing the obtained point cloud BIM model with a preset BIM model in real time, monitoring the deviation of the steel truss height difference and the axis, and repeatedly modifying the BIM model and scanning the three-dimensional laser to meet the condition that the error of the height difference and the axis is within an allowable range.
4. The method for monitoring construction of the steel truss bridge based on three-dimensional laser scanning and BIM as claimed in claim 1, wherein the step S6 includes:
s61: carrying out quality inspection and acceptance on the bridge; analyzing and remedying the quality problems, and collecting and arranging relevant data of the quality problems;
s62: marking the part or the process with the quality problem in the BIM model; and packaging the judgment of the quality problem and the corresponding processing method to obtain data information of the data for preventing the bridge quality problem and storing the data information to a background server.
5. Steel truss bridge construction monitored control system based on three-dimensional laser scanning and BIM, its characterized in that includes:
a component manufacturing module: the method comprises the steps of obtaining a preset BIM model by adopting Revit modeling according to a design drawing, and carrying out an actual component manufacturing stage of the drawing;
a scanning module: the system comprises a first laser scanning module, a second laser scanning module, a third laser scanning module, a fourth laser scanning module and a fourth laser scanning module, wherein the first laser scanning module is used for carrying out first preset three-dimensional laser scanning on an actual component to obtain corresponding point cloud data; processing the point cloud data to obtain a point cloud BIM model;
an adjusting module: the point cloud BIM virtual pre-assembly stage is used for carrying out comparative analysis on a preset BIM model and the point cloud BIM model, calculating the difference value of control point coordinates of components in the preset BIM model and the point cloud BIM model, and carrying out virtual pre-assembly if the allowable error of the components is met; if the error is larger than the allowable error range of the component, modifying the component, and re-measuring the modified component for quality detection until the allowable error of the component is met;
virtual pre-assembly module: the virtual pre-assembly stage is used for carrying out second preset three-dimensional laser scanning on the components meeting the quality detection to obtain corresponding point cloud data;
the field construction adjusting module: the system is used for carrying out on-site construction according to the splicing report obtained in the virtual pre-splicing stage;
an engineering delivery module: and the system is used for labeling, packaging and storing the parts or the working procedures with quality problems to a background server.
6. The steel truss bridge construction monitoring system based on three-dimensional laser scanning and BIM of claim 5, wherein the virtual pre-assembly module comprises:
a first scanning unit: the system is used for carrying out three-dimensional laser scanning on the component again on the component transportation site to obtain point cloud data of the component splicing unit;
a first judgment unit: the system is used for aligning the point cloud data of the assembly units and performing virtual assembly; obtaining splicing errors and adjustment information required to be modified; if the error is within the allowable range, forming a corresponding splicing report according to engineering requirements; if the error is larger than the allowable range, repeating the component modification and the simulated assembly until the error meets the allowable range.
7. The steel truss bridge construction monitoring system based on three-dimensional laser scanning and BIM of claim 5, wherein the on-site construction adjustment module comprises:
a second scanning unit: the device is used for carrying out three-dimensional laser scanning on the axis and the height difference of the steel truss bridge in the construction process and modifying the BIM in real time according to the construction requirement;
a second judgment unit: the device is used for comparing the obtained point cloud BIM model with a preset BIM model in real time, monitoring the deviation of the height difference of the steel truss and the axis, and repeatedly modifying the BIM model and scanning the three-dimensional laser to meet the condition that the error of the height difference and the axis is within an allowable range.
8. The steel truss bridge construction monitoring system based on three-dimensional laser scanning and BIM of claim 5, wherein the engineering delivery module comprises:
an acceptance unit: the quality inspection and acceptance are carried out on the bridge; analyzing and remedying the quality problems, and collecting and arranging relevant data of the quality problems;
a packaging storage unit: a part or process for marking the BIM model with quality problems; and packaging the judgment of the quality problem and the corresponding processing method to obtain data information of the data for preventing the bridge quality problem and storing the data information to a background server.
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| CN115618472A (en) * | 2022-10-27 | 2023-01-17 | 中交一公局第七工程有限公司 | Engineering structure digital pre-assembly method and system based on BIM model and application |
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