CN111444564A - Spatial information modeling (BIM) -based grid structure synchronous lifting construction method - Google Patents
Spatial information modeling (BIM) -based grid structure synchronous lifting construction method Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 40
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 37
- 238000004088 simulation Methods 0.000 claims abstract description 7
- 238000005192 partition Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 14
- 241001139947 Mida Species 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 230000010365 information processing Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
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Abstract
The invention discloses a spatial information modeling (BIM) -based grid structure synchronous lifting construction method, and belongs to the technical field of grid structure construction. The method comprises the following steps: step 1, optimizing a grid structure model, and establishing a node space coordinate database; step 2, analyzing and comparing the mechanical properties of the structure at multiple angles, comparing and selecting a lifting scheme, and determining the position of a lifting point; step 3, positioning the nodes, setting a laser emitting and receiving device, and assembling the rod pieces; step 4, simulation of a lifting process and arrangement of lifting equipment; step 5, synchronously lifting the grid structure in a partition manner; and 6, improving process data acquisition, precision checking and synchronous speed adjustment. According to the invention, the entrance stress analysis and the structure comparison of the whole grid structure lifting process are carried out by using various finite element software, so that the stress characteristic of the structure can be reflected most truly, the optimal construction scheme is determined, and the accuracy and the safety of the grid structure lifting process can be effectively improved.
Description
Technical Field
The invention relates to the technical field of grid structure construction, in particular to a BIM-based grid structure synchronous lifting construction method.
Background
With the improvement of the technological level of modern science, spatial structure systems with various forms are more and more applied to real life, and especially, the use of spatial grid structures is becoming wide. But along with the continuous increase of space grid structure span, the precision and the degree of accuracy requirement that grid structure was assembled, was installed are also higher and higher, and how to improve grid structure under the prerequisite of guaranteeing safety and promote the efficiency of overall process is the important factor that grid structure can whether rapid development.
Disclosure of Invention
1. Problems to be solved
Aiming at the defects and shortcomings in the prior art, the invention provides a spatial information modeling (BIM) -based grid structure synchronous lifting construction method, which realizes the synchronization of the whole grid lifting process, ensures the integral installation precision of the grid structure, ensures the safety of the construction process and improves the grid construction efficiency.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a spatial information modeling (BIM) -based grid structure synchronous lifting construction method comprises the following steps:
step 1, optimizing a grid structure model, and establishing a node space coordinate database;
step 2, analyzing and comparing the mechanical properties of the structure at multiple angles, comparing and selecting a lifting scheme, and determining the position of a lifting point;
step 3, positioning the nodes, setting a laser emitting and receiving device, and assembling the rod pieces;
step 4, simulation of a lifting process and arrangement of lifting equipment;
step 5, synchronously lifting the grid structure in a partition manner;
step 6, improving process data acquisition, precision checking and synchronous speed adjustment;
the step 1 specifically comprises the following steps: (1) adopting Tekla software to carry out three-dimensional modeling of a grid structure, designing according to different ball node elevations and the types and shapes of balls on a project grid, firstly, introducing an original CAD design drawing into the Tekla software, creating a shaft network and an elevation in the Tekla software, drawing members such as a lower chord, an upper chord and a web member, three-dimensional geometric models such as a welding ball and a bolt ball in sequence, and adding material building information; (2) then sequentially establishing all structural models in the Tekla, wherein the models comprise structural beams, structural columns, upper chords, lower chords, welding balls, bolt balls, roof purlins and the like, defining the spatial attributes (x, y and z) of the structural beams, the structural columns, the upper chords, the lower chords, the welding balls, the bolt balls and the roof purlins, and finally splicing and establishing the modules to obtain three-dimensional spatial views of the steel truss at different angles; (3) the method comprises the steps that collision check is carried out on three-dimensional space views of net racks at different angles, rod size and a spherical node connection mode are optimized, and an optimized net rack model structure is generated;
the step 2 specifically operates as follows: according to a proposed construction scheme, according to different construction stages, respectively applying two finite element analysis software, namely Midas/Gen and ANSYS to perform stress analysis on each stage of the optimized grid model lifting process in the first step, comparing Midas and ANSYS to analyze the stress deformation results of the lifted structure, synchronously analyzing the stability of each construction stage of the structure, comparing the obtained data, finding out weak positions and weak points of the structure, selecting the positions of support columns, determining whether temporary supports need to be arranged or not, optimizing lifting slings, determining the positions of lifting points and selecting the best feasible implementation scheme;
the step 3 specifically operates as follows: (1) sequentially converting the spatial attributes of the nodes such as the bolt balls, the welding balls and the like of the three-dimensional model of the grid structure after optimization in the first step into readable three-dimensional coordinates by means of computer information processing software, and uploading the readable three-dimensional coordinates to a cloud end to generate a cloud end database; (2) importing the generated cloud database into the pad, sequentially scanning and lofting according to coordinate points in the database by means of a BIM lofting machine, and determining the positions of the nodes to be installed; (3) ground assembly of each rod piece of the grid structure is carried out according to the determined node positions, coordinates of a group of nodes are retested once after each group of nodes are installed, the coordinates are compared with corresponding point coordinates in a cloud database, coordinate deviation values are analyzed, and manual adjustment is carried out, so that the accuracy of the node positions is guaranteed;
the step 4 specifically comprises the following operations: putting the net rack three-dimensional model in the step one into Navisthroks software according to the content of the selected construction scheme, creating construction animations of lifting processes in each stage in Navisthroks, loading the construction animations into software of Microsoft Hololens wearable equipment, performing MR animation demonstration, performing simulation demonstration on the lifting processes in each stage in glasses by using the created animations in a gesture or button mode, so as to assist field construction and technical background crossing, and meanwhile arranging lifting equipment and lifting points by combining actual field conditions;
the step 5 specifically comprises the following operations: according to a proposed lifting scheme, a whole set of lifting systems such as hydraulic lifters, a computer control system and sensors are arranged at the periphery of each lifting point, a lifting platform is arranged on a supporting column or a temporary support, a lifting sling is installed, then the speed and stroke displacement values of each hydraulic lifter are set to be the same value, a set of sensors with the same performance parameters are arranged on each hydraulic lifter, and the hydraulic lifters are controlled by a computer to carry out staged simultaneous lifting according to a lifting area;
the step 6 specifically comprises the following operations: and in the lifting process of each stage, simultaneously starting the small laser transmitters at the nodes, acquiring the receiving time of the laser receivers at the nodes on the ground by the computer, converting the acquired data into corresponding space three-dimensional coordinates by developing computer software, comparing the obtained three-dimensional coordinates with the coordinates of the corresponding nodes in the step three, and adjusting the lifting rate and the frequency according to the deviation values obtained by comparison.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
according to the BIM-based grid structure synchronous lifting construction method, the entrance stress analysis and the structure comparison of the whole grid structure lifting process are carried out by using various finite element software, the stress characteristic of the structure can be truly reflected, the optimal construction scheme is determined, meanwhile, the data of the lifting process are collected and compared in real time according to the real stress characteristic, and the accuracy and the safety of the grid structure lifting process can be effectively improved.
Drawings
FIG. 1 is a construction flow chart of the present invention.
Detailed Description
The invention will be further described with reference to specific embodiments and the accompanying drawings in which:
example 1
The BIM-based grid structure synchronous lifting construction method comprises the following steps:
step 1, optimizing a grid structure model, and establishing a node space coordinate database;
step 2, analyzing and comparing the mechanical properties of the structure at multiple angles, comparing and selecting a lifting scheme, and determining the position of a lifting point;
step 3, positioning the nodes, setting a laser emitting and receiving device, and assembling the rod pieces;
step 4, simulation of a lifting process and arrangement of lifting equipment;
step 5, synchronously lifting the grid structure in a partition manner;
step 6, improving process data acquisition, precision checking and synchronous speed adjustment;
the step 1 specifically comprises the following steps: (1) adopting Tekla software to carry out three-dimensional modeling of a grid structure, designing according to different ball node elevations and the types and shapes of balls on a project grid, firstly, introducing an original CAD design drawing into the Tekla software, creating a shaft network and an elevation in the Tekla software, drawing members such as a lower chord, an upper chord and a web member, three-dimensional geometric models such as a welding ball and a bolt ball in sequence, and adding material building information; (2) then sequentially establishing all structural models in the Tekla, wherein the models comprise structural beams, structural columns, upper chords, lower chords, welding balls, bolt balls, roof purlins and the like, defining the spatial attributes (x, y and z) of the structural beams, the structural columns, the upper chords, the lower chords, the welding balls, the bolt balls and the roof purlins, and finally splicing and establishing the modules to obtain three-dimensional spatial views of the steel truss at different angles; (3) the method comprises the steps that collision check is carried out on three-dimensional space views of net racks at different angles, rod size and a spherical node connection mode are optimized, and an optimized net rack model structure is generated;
the step 2 specifically operates as follows: according to a proposed construction scheme, according to different construction stages, respectively applying two finite element analysis software, namely Midas/Gen and ANSYS to perform stress analysis on each stage of the optimized grid model lifting process in the first step, comparing Midas and ANSYS to analyze the stress deformation results of the lifted structure, synchronously analyzing the stability of each construction stage of the structure, comparing the obtained data, finding out weak positions and weak points of the structure, selecting the positions of support columns, determining whether temporary supports need to be arranged or not, optimizing lifting slings, determining the positions of lifting points and selecting the best feasible implementation scheme;
the step 3 specifically operates as follows: (1) sequentially converting the spatial attributes of the nodes such as the bolt balls, the welding balls and the like of the three-dimensional model of the grid structure after optimization in the first step into readable three-dimensional coordinates by means of computer information processing software, and uploading the readable three-dimensional coordinates to a cloud end to generate a cloud end database; (2) importing the generated cloud database into the pad, sequentially scanning and lofting according to coordinate points in the database by means of a BIM lofting machine, and determining the positions of the nodes to be installed; (3) ground assembly of each rod piece of the grid structure is carried out according to the determined node positions, coordinates of a group of nodes are retested once after each group of nodes are installed, the coordinates are compared with corresponding point coordinates in a cloud database, coordinate deviation values are analyzed, and manual adjustment is carried out, so that the accuracy of the node positions is guaranteed;
the step 4 specifically comprises the following operations: putting the net rack three-dimensional model in the step one into Navisthroks software according to the content of the selected construction scheme, creating construction animations of lifting processes in each stage in Navisthroks, loading the construction animations into software of Microsoft Hololens wearable equipment, performing MR animation demonstration, performing simulation demonstration on the lifting processes in each stage in glasses by using the created animations in a gesture or button mode, so as to assist field construction and technical background crossing, and meanwhile arranging lifting equipment and lifting points by combining actual field conditions;
the step 5 specifically comprises the following operations: according to a proposed lifting scheme, a whole set of lifting systems such as hydraulic lifters, a computer control system and sensors are arranged at the periphery of each lifting point, a lifting platform is arranged on a supporting column or a temporary support, a lifting sling is installed, then the speed and stroke displacement values of each hydraulic lifter are set to be the same value, a set of sensors with the same performance parameters are arranged on each hydraulic lifter, and the hydraulic lifters are controlled by a computer to carry out staged simultaneous lifting according to a lifting area;
the step 6 specifically comprises the following operations: and in the lifting process of each stage, simultaneously starting the small laser transmitters at the nodes, acquiring the receiving time of the laser receivers at the nodes on the ground by the computer, converting the acquired data into corresponding space three-dimensional coordinates by developing computer software, comparing the obtained three-dimensional coordinates with the coordinates of the corresponding nodes in the step three, and adjusting the lifting rate and the frequency according to the deviation values obtained by comparison.
Furthermore, small laser emitters are arranged at the nodes of the bolt ball, the welding ball and the like, a laser receiver is arranged below the small laser emitters, and the receiver is connected with a computer for data acquisition.
Further, the deviation value in the step 6 is not more than 15 mm.
According to the invention, the entrance stress analysis and the structure comparison of the whole grid structure lifting process are carried out by using various finite element software, the stress characteristic of the structure can be truly reflected, the optimal construction scheme is determined, meanwhile, the data of the lifting process is collected and compared in real time according to the real stress characteristic, and the accuracy and the safety of the grid lifting process can be effectively improved.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, to which the actual method is not limited. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (3)
1. A spatial information modeling (BIM) -based grid structure synchronous lifting construction method is characterized in that: the method comprises the following steps:
step 1, optimizing a grid structure model, and establishing a node space coordinate database;
step 2, analyzing and comparing the mechanical properties of the structure at multiple angles, comparing and selecting a lifting scheme, and determining the position of a lifting point;
step 3, positioning the nodes, setting a laser emitting and receiving device, and assembling the rod pieces;
step 4, simulation of a lifting process and arrangement of lifting equipment;
step 5, synchronously lifting the grid structure in a partition manner;
step 6, improving process data acquisition, precision checking and synchronous speed adjustment;
the step 1 specifically comprises the following steps: (1) adopting Tekla software to carry out three-dimensional modeling of a grid structure, designing according to different ball node elevations and the types and shapes of balls on a project grid, firstly, introducing an original CAD design drawing into the Tekla software, creating a shaft network and an elevation in the Tekla software, drawing members such as a lower chord, an upper chord and a web member, three-dimensional geometric models such as a welding ball and a bolt ball in sequence, and adding material building information; (2) then sequentially establishing all structural models in the Tekla, wherein the models comprise structural beams, structural columns, upper chords, lower chords, welding balls, bolt balls, roof purlins and the like, defining the spatial attributes (x, y and z) of the structural beams, the structural columns, the upper chords, the lower chords, the welding balls, the bolt balls and the roof purlins, and finally splicing and establishing the modules to obtain three-dimensional spatial views of the steel truss at different angles; (3) the method comprises the steps that collision check is carried out on three-dimensional space views of net racks at different angles, rod size and a spherical node connection mode are optimized, and an optimized net rack model structure is generated;
the step 2 specifically operates as follows: according to a proposed construction scheme, according to different construction stages, respectively applying two finite element analysis software, namely Midas/Gen and ANSYS to perform stress analysis on each stage of the optimized grid model lifting process in the first step, comparing Midas and ANSYS to analyze the stress deformation results of the lifted structure, synchronously analyzing the stability of each construction stage of the structure, comparing the obtained data, finding out weak positions and weak points of the structure, selecting the positions of support columns, determining whether temporary supports need to be arranged or not, optimizing lifting slings, determining the positions of lifting points and selecting the best feasible implementation scheme;
the step 3 specifically operates as follows: (1) sequentially converting the spatial attributes of the nodes such as the bolt balls, the welding balls and the like of the three-dimensional model of the grid structure after optimization in the first step into readable three-dimensional coordinates by means of computer information processing software, and uploading the readable three-dimensional coordinates to a cloud end to generate a cloud end database; (2) importing the generated cloud database into the pad, sequentially scanning and lofting according to coordinate points in the database by means of a BIM lofting machine, and determining the positions of the nodes to be installed; (3) ground assembly of each rod piece of the grid structure is carried out according to the determined node positions, coordinates of a group of nodes are retested once after each group of nodes are installed, the coordinates are compared with corresponding point coordinates in a cloud database, coordinate deviation values are analyzed, and manual adjustment is carried out, so that the accuracy of the node positions is guaranteed;
the step 4 specifically comprises the following operations: putting the net rack three-dimensional model in the step one into Navisthroks software according to the content of the selected construction scheme, creating construction animations of lifting processes in each stage in Navisthroks, loading the construction animations into software of Microsoft Hololens wearable equipment, performing MR animation demonstration, performing simulation demonstration on the lifting processes in each stage in glasses by using the created animations in a gesture or button mode, so as to assist field construction and technical background crossing, and meanwhile arranging lifting equipment and lifting points by combining actual field conditions;
the step 5 specifically comprises the following operations: according to a proposed lifting scheme, a whole set of lifting systems such as hydraulic lifters, a computer control system and sensors are arranged at the periphery of each lifting point, a lifting platform is arranged on a supporting column or a temporary support, a lifting sling is installed, then the speed and stroke displacement values of each hydraulic lifter are set to be the same value, a set of sensors with the same performance parameters are arranged on each hydraulic lifter, and the hydraulic lifters are controlled by a computer to carry out staged simultaneous lifting according to a lifting area;
the step 6 specifically comprises the following operations: and in the lifting process of each stage, simultaneously starting the small laser transmitters at the nodes, acquiring the receiving time of the laser receivers at the nodes on the ground by the computer, converting the acquired data into corresponding space three-dimensional coordinates by developing computer software, comparing the obtained three-dimensional coordinates with the coordinates of the corresponding nodes in the step three, and adjusting the lifting rate and the frequency according to the deviation values obtained by comparison.
2. The BIM-based grid structure synchronous lifting construction method according to claim 1, characterized in that: and small laser emitters are arranged at the joints of the bolt ball, the welding ball and the like, a laser receiver is arranged below the small laser emitters, and the receiver is connected with a computer for data acquisition.
3. The BIM-based grid structure synchronous lifting construction method according to claim 1, characterized in that: the deviation value in the step 6 is not more than 15 mm.
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| CN116044175A (en) * | 2022-12-21 | 2023-05-02 | 中交建筑集团有限公司 | Intelligent multipoint lifting construction scheme determining method and system |
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