阅读说明：本技术 一种基于建筑信息化模型的输电塔自动建模方法及系统 (Automatic power transmission tower modeling method and system based on building informatization model ) 是由 汪长智 李清华 韩军科 黄耀 苏志钢 朱彬荣 胡晓光 王飞 曹晔晖 于 2018-06-26 设计创作，主要内容包括：一种基于建筑信息化模型的输电塔自动建模方法及系统,包括：根据输电塔的杆塔荷载计算结果识别输电塔的杆件；基于建筑信息化模型获取杆件的连接关系和朝向规则；基于杆件、杆件连接关系和朝向规则识别每个杆件对应的节点和节点对应的面；基于识别的杆件、杆件对应的节点以及节点对应的面自动生成输电塔三维模型。本发明的技术方案性能稳定、功能满足交付要求,相比于传统的三维放样,可有效减轻约工作量,具有十分显著地经济效益和社会效益。(A power transmission tower automatic modeling method and system based on a building informatization model comprises the following steps: identifying a rod piece of the power transmission tower according to a tower load calculation result of the power transmission tower; acquiring the connection relation and the orientation rule of the rod pieces based on the building informatization model; identifying nodes corresponding to each rod piece and a surface corresponding to the nodes based on the rod pieces, the rod piece connection relation and the orientation rule; and automatically generating a three-dimensional model of the power transmission tower based on the identified rod piece, the node corresponding to the rod piece and the surface corresponding to the node. The technical scheme of the invention has stable performance, meets the delivery requirement in function, can effectively reduce the workload compared with the traditional three-dimensional lofting, and has very remarkable economic and social benefits.)

1. A power transmission tower automatic modeling method based on a building informatization model is characterized by comprising the following steps:

identifying a rod piece of the power transmission tower according to a tower load calculation result of the power transmission tower;

acquiring the connection relation and the orientation rule of the rod piece based on a building informatization model;

identifying nodes corresponding to each rod piece and a surface corresponding to the nodes based on the rod pieces, the rod piece connection relation and the orientation rule;

and automatically generating a three-dimensional model of the power transmission tower based on the identified rod piece, the node corresponding to the rod piece and the surface corresponding to the node.

2. The method for automatically modeling a transmission tower according to claim 1, wherein the identifying the poles of the transmission tower according to the tower load calculation result of the transmission tower comprises:

obtaining all rod piece information of the power transmission tower based on the tower load calculation result of the power transmission tower;

recognizing the front outer contour line of the power transmission tower through a front contour recognition algorithm preset in the building information model based on all the rod piece information;

identifying a preset type of bar member from the bar members included in the outer contour line;

wherein the preset type of the rod member comprises: the tower body main material, the cross arm main material and the cross partition surface.

3. The building informatization model-based transmission tower automatic modeling method according to claim 2, wherein the identifying of the transmission tower front outer contour line by a front contour identification algorithm in the building informatization model based on all the pole information comprises:

screening at least two rod pieces from the rod piece information to be used as projection rod pieces, and projecting on an XOZ plane;

rejecting overlapped rods in the projection rods through an overlapping algorithm;

and finding out the outer contour line through a maximum loop algorithm based on the projection rod piece after the overlapped rod piece is removed.

4. The method for automatically modeling a transmission tower according to claim 2, wherein the identifying a predetermined type of bar member from the bar members included in the outer contour line comprises:

identifying a tower body main material according to a preset tower body main material identification algorithm in a building information model based on the front outer contour line;

identifying a cross arm main material according to a cross arm main material identification algorithm preset in a building information model based on the front outer contour line;

and identifying the transverse partition surface based on the front outer contour line according to a preset transverse partition surface identification algorithm in the building information model.

5. The building informatization model-based power transmission tower automatic modeling method according to claim 4, wherein the identification of the tower body main material based on the front outer contour line according to a tower body main material identification algorithm preset in the building informatization model comprises:

traversing the rod pieces in the front outer contour line, and marking the rod pieces as tower body main materials when preset conditions are met;

wherein the preset conditions include:

4 quadrants are symmetrical;

an included angle between the Z axis and the Z axis does not exceed a first preset angle;

must be on the outer contour line;

the node coordinate X, Y values of the two end points cannot be smaller than the preset length;

at least one of the node main materials of the two end points is a rod piece which is currently traversed in the front outer contour line.

6. The building informatization model-based power transmission tower automatic modeling method according to claim 4, wherein the identifying of the cross arm principal material based on the front side outer contour line according to a pre-set cross arm principal material identification algorithm in the building informatization model comprises:

traversing the front outer contour line, and marking the front outer contour line as a cross arm main material when a first condition is met;

otherwise, continuously traversing the front outer contour line which does not meet the first condition, and marking as the cross arm main timber when meeting the second condition;

wherein the first condition comprises:

one end point is positioned on the cross arm main material;

the included angle of the X axis is not more than a second preset angle;

the second condition includes:

one end of the rod piece is connected to the existing cross arm main material;

the included angle between the X axis and the X axis is not more than a third preset angle.

7. The building informatization model-based power transmission tower automatic modeling method according to claim 4, wherein the identifying of the transverse planes based on the front side outer contour lines according to a preset transverse plane identification algorithm in the building informatization model comprises:

traversing all the rod piece information, and marking the rod piece information as a transverse partition surface when a third condition is met;

wherein the third condition comprises:

the Z coordinate height difference of two end points of the rod piece is a preset value;

the rod piece is positioned in the surrounding frame of the tower body main material with the same height as the Z value.

8. The method for automatically modeling a transmission tower according to claim 1, wherein the identifying nodes and faces corresponding to the nodes corresponding to each of the bars based on the bars, the bar connection relationships and the orientation rules comprises:

and identifying nodes corresponding to the rod piece and a surface corresponding to the nodes through a preset node automatic processing algorithm based on the rod piece, the rod piece connection relation and the orientation setting.

9. The building informatization model-based power transmission tower automatic modeling method according to claim 8, wherein the node automatic processing algorithm comprises:

identifying nodes corresponding to the rod pieces based on the rod pieces, the connection relation of the rod pieces and the orientation setting;

and determining a surface corresponding to the node and a reinforcing panel for fixing the surface based on the preset type of rod piece.

10. The method for automatically modeling a transmission tower according to claim 9, wherein the identifying nodes corresponding to the bar members based on the bar members, the connection relationship of the bar members, and the orientation setting comprises:

processing K nodes on the tower body through a tower body middle K-type node processing algorithm based on the rod pieces, the rod piece connection relation and the orientation setting;

processing the connecting nodes of the cross arm main material tower body through a cross arm main material tower body connecting node processing algorithm;

processing the connecting nodes of the double main material tower bodies through a double main material tower body connecting node processing algorithm;

processing the single-double transition nodes through a single-double transition node processing algorithm;

processing the node of the cat-head angle steel crank arm through a cat-head angle steel crank arm node processing algorithm;

processing the wine glass angle steel crank arm node by a wine glass angle steel crank arm node processing algorithm;

and processing the single-panel connecting nodes of the other trusses of the cat head through a processing algorithm of the single-panel connecting nodes of the other trusses of the cat head.

11. The method for automatically modeling a transmission tower according to claim 9, wherein said determining the faces corresponding to said nodes and the reinforcement panels fixing said faces based on said predetermined type of rods comprises:

when the type of the rod piece is a tower body main material, obtaining a surface which is connected with the rod piece or corresponds to a node and a node of the rod piece through a tower body main material K node processing algorithm and a double main material tower body connecting node processing algorithm, and reinforcing the rod piece on the surface by a panel;

when the type of the rod piece is a cross arm main material, obtaining a surface connected with the rod piece or corresponding to a node and a node of the rod piece through a cross arm main material tower body connection point processing algorithm, and reinforcing a panel for the rod piece on the surface;

when the type of the rod piece is a diaphragm, obtaining a surface connected with the rod piece or corresponding to a node and a node of the rod piece through a single-double transition point processing algorithm, and reinforcing the rod piece on the surface by a panel;

when the rod piece is of a cat-head angle steel crank arm type, obtaining a surface connected with the rod piece or corresponding to a node and a node of the rod piece through a cat-head angle steel crank arm node processing algorithm, and reinforcing a panel on the rod piece on the surface;

and when the rod piece is of a wine cup angle steel crank arm type, obtaining a surface which is connected with the rod piece or passes through the node of the rod piece and the node through a wine cup angle steel crank arm node processing algorithm, and reinforcing the rod piece on the surface by a panel.

12. The building informatization model-based power transmission tower automatic modeling method according to claim 1, wherein the tower load calculation result comprises:

the tower height and the number of the connecting legs, the node distribution table, the number of the nodes, the detailed information of the nodes, the number of main material sections, the detailed information of the sections, the number of rows of the member material code table, the member material code, the number of the stressed members and the number of the auxiliary members.

13. An automatic modeling system for a power transmission tower based on a building informatization model is characterized by comprising: the system comprises a rod piece identification module, a position acquisition module, a data identification module and a model generation module;

the rod piece identification module is used for identifying the rod piece of the power transmission tower according to the tower load calculation result of the power transmission tower;

the position acquisition module is used for acquiring the connection relation and the orientation rule of the rod piece based on a building informatization model;

the data identification module is used for identifying nodes corresponding to the rod pieces and surfaces corresponding to the nodes based on the rod pieces, the rod piece connection relation and the orientation rule;

and the model generation module is used for automatically generating a three-dimensional model of the power transmission tower based on the identified rod piece, the node corresponding to the rod piece and the surface corresponding to the node.

14. The building informatization model-based power transmission tower automatic modeling system of claim 13, wherein the pole identification module comprises: the system comprises an information acquisition sub-module, an outer contour line identification sub-module and a rod piece type identification sub-module;

the information acquisition submodule is used for acquiring information of all the pole pieces of the power transmission tower based on the pole and tower load calculation result of the power transmission tower;

the outer contour line identification submodule is used for identifying the front outer contour line of the power transmission tower through a front contour identification algorithm preset in the building information model based on all the rod piece information;

the rod type identification submodule is used for identifying a preset type of rod from the rods included in the outer contour line;

wherein the preset type of the rod member comprises: the tower body main material, the cross arm main material and the cross partition surface.

15. The building informatization model-based power transmission tower automated modeling system of claim 14, wherein the outer contour line recognition sub-module comprises: the device comprises a projection unit, a rejection unit and a searching unit;

the projection unit is used for screening at least two rod pieces from the rod piece information to be used as projection rod pieces and projecting on an XOZ plane;

the removing unit is used for removing the overlapped rods in the projection rods through an overlapping algorithm;

and the searching unit is used for finding out the outer contour line through a maximum ring algorithm based on the projection rod piece after the overlapped rod piece is removed.

16. The building informatization model-based transmission tower automated modeling system of claim 14, wherein the outer contour line identification submodule, the bar type identification submodule, comprises: the device comprises a tower body main material identification unit, a cross arm main material identification unit and a cross partition identification unit;

the tower body main material identification unit is used for identifying the tower body main material based on the front outer contour line according to a preset tower body main material identification algorithm in a building information model;

the cross arm main material identification unit is used for identifying a cross arm main material according to a cross arm main material identification algorithm preset in a building information model based on the front outer contour line;

and the transverse partition surface identification unit is used for identifying the transverse partition surface based on the front outer contour line according to a preset transverse partition surface identification algorithm in the building information model.

17. The building informatization model-based power transmission tower automatic modeling system of claim 13, wherein the data identification module comprises: a node automatic processing submodule;

and the node automatic processing submodule is used for identifying nodes corresponding to the rod piece and a surface corresponding to the nodes through a preset node automatic processing algorithm based on the rod piece, the rod piece connection relation and the orientation setting.

18. The building informatization model-based transmission tower automatic modeling system of claim 17, wherein the node automatic processing sub-module comprises: a node identification unit and a node processing unit;

the node identification unit is used for identifying nodes corresponding to the rod pieces based on the rod pieces, the connection relation of the rod pieces and the orientation setting;

and the node processing unit is used for determining a surface corresponding to the node and a reinforcing panel for fixing the surface based on the preset type of rod piece.

19. The building informatization model-based transmission tower automatic modeling system of claim 18, wherein the node processing unit comprises: the device comprises a first processing subunit, a second processing subunit, a third processing subunit, a fourth processing subunit and a fifth processing subunit;

the first processing subunit is used for obtaining a surface connected with the rod piece or corresponding to the node and the node of the rod piece through a tower body main material K node processing algorithm and a double-main-material tower body connecting node processing algorithm when the type of the rod piece is a tower body main material, and reinforcing the rod piece on the surface by a panel;

the second processing subunit is used for obtaining a surface connected with the rod piece or corresponding to a node and a node of the rod piece through a crosspiece main material tower body connection point processing algorithm when the rod piece is of the type of the cross arm main material, and reinforcing the rod piece on the surface by a panel;

the third processing subunit is configured to, when the type of the rod is a diaphragm, obtain a surface connected to the rod or corresponding to a node and a node of the rod through a single-double transition point processing algorithm, and reinforce a panel of the rod on the surface;

the fourth processing subunit is configured to, when the type of the rod is a cat-head angle steel crank, obtain, through a cat-head angle steel crank node processing algorithm, a surface corresponding to a node and a node connected to the rod or passing through the rod, and reinforce the rod on the surface by a panel;

and the fifth processing subunit is used for obtaining a surface which is connected with the rod piece or corresponds to the node and the node of the rod piece through a node processing algorithm of the wine cup angle steel crank arm when the type of the rod piece is the wine cup angle steel crank arm, and reinforcing the rod piece on the surface by the panel.

Technical Field

The invention belongs to the technical field of power transmission and transformation, and particularly relates to a power transmission tower automatic modeling method and system based on a building informatization model.

Background

On the basis of researching the technical development current situation of a Building Information Modeling (BIM for short) and the current situation of the transmission tower industry, the fact that automatic Modeling of a transmission angle steel tower is realized in the structural design stage of the transmission tower is determined through deep analysis to be a core link of integrated development of three-dimensional digital flower delivery, design and processing of a line.

The transmission tower is an important component of the transmission line, and the tower industry is different in division of labor: the design institute is responsible for tower load calculation, commander drawing and blueprint drawing, and the iron tower factory is responsible for tower three-dimensional lofting, component processing, trial assembly, has the problem such as information sharing is not enough, modeling is repeated. Moreover, under the prior art conditions, because a design institute is not provided with three-dimensional modeling force of the transmission tower, the three-dimensional digital delivery of the transmission line is difficult to carry out, the workload is high, and the automatic modeling of the transmission tower is urgently needed to be realized in the tower design stage (in a certain sense, the automatic modeling in the design stage is the inherent requirement of the BIM technology), so that the three-dimensional model of the tower meets the digital delivery requirement, can be completed in a tower factory by a flow, and then is converted into an NC code to be directly processed and produced by a numerical control machine.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides an automatic power transmission tower modeling method and system based on a building informatization model.

The technical scheme provided by the invention is as follows:

a power transmission tower automatic modeling method based on a building informatization model comprises the following steps:

identifying a rod piece of the power transmission tower according to a tower load calculation result of the power transmission tower;

acquiring the connection relation and the orientation rule of the rod piece based on a BIM model;

identifying nodes corresponding to each rod piece and a surface corresponding to the nodes based on the rod pieces, the rod piece connection relation and the orientation rule;

and automatically generating a three-dimensional model of the power transmission tower based on the identified rod piece, the node corresponding to the rod piece and the surface corresponding to the node.

Preferably, the identifying the pole piece of the transmission tower according to the pole tower load calculation result of the transmission tower includes:

obtaining all rod piece information of the power transmission tower based on the tower load calculation result of the power transmission tower;

identifying the front outer contour line of the power transmission tower through a front contour identification algorithm preset in the BIM based on all the rod piece information;

identifying a preset type of bar member from the bar members included in the outer contour line;

wherein the preset type of the rod member comprises: the tower body main material, the cross arm main material and the cross partition surface.

Preferably, the identifying the front outer contour line of the transmission tower through a front contour identification algorithm in the BIM model based on all the bar information includes:

screening at least two rod pieces from the rod piece information to be used as projection rod pieces, and projecting on an XOZ plane;

rejecting overlapped rods in the projection rods through an overlapping algorithm;

and finding out the outer contour line through a maximum loop algorithm based on the projection rod piece after the overlapped rod piece is removed.

Preferably, the identifying of the preset type of the bar member from the bar members included in the outer contour line includes:

recognizing a tower body main material according to a preset tower body main material recognition algorithm in a BIM (building information modeling) model based on the front outer contour line;

identifying a cross arm main material according to a cross arm main material identification algorithm preset in a BIM (building information modeling) model on the basis of the front outer contour line;

and identifying the transverse partition surface based on the front outer contour line according to a preset transverse partition surface identification algorithm in the BIM model.

Preferably, the identifying of the tower body main material based on the front outer contour line according to a preset tower body main material identification algorithm in the BIM model includes:

traversing the rod pieces in the front outer contour line, and marking the rod pieces as tower body main materials when preset conditions are met;

wherein the preset conditions include:

4 quadrants are symmetrical;

an included angle between the Z axis and the Z axis does not exceed a first preset angle;

must be on the outer contour line;

the node coordinate X, Y values of the two end points cannot be smaller than the preset length;

at least one of the node main materials of the two end points is a rod piece which is currently traversed in the front outer contour line.

Preferably, the identifying a cross arm main material according to a cross arm main material identification algorithm preset in a BIM model based on the front outer contour line includes:

traversing the front outer contour line, and marking the front outer contour line as a cross arm main material when a first condition is met;

otherwise, continuously traversing the front outer contour line which does not meet the first condition, and marking as the cross arm main timber when meeting the second condition;

wherein the first condition comprises:

one end point is positioned on the cross arm main material;

the included angle of the X axis is not more than a second preset angle;

the second condition includes:

one end of the rod piece is connected to the existing cross arm main material;

the included angle between the X axis and the X axis is not more than a third preset angle.

Preferably, the identifying the transverse partition surface based on the front outer contour line according to a preset transverse partition surface identification algorithm in the BIM model includes:

traversing all the rod piece information, and marking the rod piece information as a transverse partition surface when a third condition is met;

wherein the third condition comprises:

the Z coordinate height difference of two end points of the rod piece is a preset value;

the rod piece is positioned in the surrounding frame of the tower body main material with the same height as the Z value.

Preferably, the identifying nodes and surfaces corresponding to the nodes corresponding to each rod based on the rods, the rod connection relationship and the orientation rule includes:

and identifying nodes corresponding to the rod piece and a surface corresponding to the nodes through a preset node automatic processing algorithm based on the rod piece, the rod piece connection relation and the orientation setting.

Preferably, the node automatic processing algorithm includes:

identifying nodes corresponding to the rod pieces based on the rod pieces, the connection relation of the rod pieces and the orientation setting;

and determining a surface corresponding to the node and a reinforcing panel for fixing the surface based on the preset type of rod piece.

Preferably, the identifying the node corresponding to the rod based on the rod, the connection relationship of the rod, and the orientation setting includes:

processing K nodes on the tower body through a tower body middle K-type node processing algorithm based on the rod pieces, the rod piece connection relation and the orientation setting;

processing the connecting nodes of the cross arm main material tower body through a cross arm main material tower body connecting node processing algorithm;

processing the connecting nodes of the double main material tower bodies through a double main material tower body connecting node processing algorithm;

processing the single-double transition nodes through a single-double transition node processing algorithm;

processing the node of the cat-head angle steel crank arm through a cat-head angle steel crank arm node processing algorithm;

processing the wine glass angle steel crank arm node by a wine glass angle steel crank arm node processing algorithm;

processing the connection of the single-face plates of the cat head and other trusses through the processing algorithm of the single-face plate connection node of the cat head and other trusses

And (4) nodes.

Preferably, the determining of the surface corresponding to the node and the reinforcing panel fixing the surface based on the rod of the preset type includes:

when the type of the rod piece is a tower body main material, obtaining a surface which is connected with the rod piece or corresponds to a node and a node of the rod piece through a tower body main material K node processing algorithm and a double main material tower body connecting node processing algorithm, and reinforcing the rod piece on the surface by a panel;

when the type of the rod piece is a cross arm main material, obtaining a surface connected with the rod piece or corresponding to a node and a node of the rod piece through a cross arm main material tower body connection point processing algorithm, and reinforcing a panel for the rod piece on the surface;

when the type of the rod piece is a diaphragm, obtaining a surface connected with the rod piece or corresponding to a node and a node of the rod piece through a single-double transition point processing algorithm, and reinforcing the rod piece on the surface by a panel;

when the rod piece is of a cat-head angle steel crank arm type, obtaining a surface connected with the rod piece or corresponding to a node and a node of the rod piece through a cat-head angle steel crank arm node processing algorithm, and reinforcing a panel on the rod piece on the surface;

and when the rod piece is of a wine cup angle steel crank arm type, obtaining a surface which is connected with the rod piece or passes through the node of the rod piece and the node through a wine cup angle steel crank arm node processing algorithm, and reinforcing the rod piece on the surface by a panel.

Preferably, the tower load calculation result includes:

the tower height and the number of the connecting legs, the node distribution table, the number of the nodes, the detailed information of the nodes, the number of main material sections, the detailed information of the sections, the number of rows of the member material code table, the member material code, the number of the stressed members and the number of the auxiliary members.

Another object of the present invention is to propose an automatic modeling system for a power transmission tower based on a building informatization model, comprising: the system comprises a rod piece identification module, a position acquisition module, a data identification module and a model generation module;

the rod piece identification module is used for identifying the rod piece of the power transmission tower according to the tower load calculation result of the power transmission tower;

the position acquisition module is used for acquiring the connection relation and the orientation rule of the rod piece based on a BIM model;

the data identification module is used for identifying nodes corresponding to the rod pieces and surfaces corresponding to the nodes based on the rod pieces, the rod piece connection relation and the orientation rule;

and the model generation module is used for automatically generating a three-dimensional model of the power transmission tower based on the identified rod piece, the node corresponding to the rod piece and the surface corresponding to the node.

Preferably, the rod identification module includes: the system comprises an information acquisition sub-module, an outer contour line identification sub-module and a rod piece type identification sub-module;

the information acquisition submodule is used for acquiring information of all the pole pieces of the power transmission tower based on the pole and tower load calculation result of the power transmission tower;

the outer contour line identification submodule is used for identifying the front outer contour line of the power transmission tower through a front contour identification algorithm preset in the BIM model based on all the rod piece information;

the rod type identification submodule is used for identifying a preset type of rod from the rods included in the outer contour line;

wherein the preset type of the rod member comprises: the tower body main material, the cross arm main material and the cross partition surface.

Preferably, the outer contour line identification submodule includes: the device comprises a projection unit, a rejection unit and a searching unit;

the projection unit is used for screening at least two rod pieces from the rod piece information to be used as projection rod pieces and projecting on an XOZ plane;

the removing unit is used for removing the overlapped rods in the projection rods through an overlapping algorithm;

and the searching unit is used for finding out the outer contour line through a maximum ring algorithm based on the projection rod piece after the overlapped rod piece is removed.

Preferably, the outer contour line identification submodule and the rod type identification submodule include: the device comprises a tower body main material identification unit, a cross arm main material identification unit and a cross partition identification unit;

the tower body main material identification unit is used for identifying the tower body main material according to a preset tower body main material identification algorithm in a BIM (building information modeling) model based on the front outer contour line;

the cross arm main material identification unit is used for identifying a cross arm main material according to a cross arm main material identification algorithm preset in a BIM (building information modeling) model on the basis of the front outer contour line;

and the transverse partition surface identification unit is used for identifying the transverse partition surface based on the front outer contour line according to a preset transverse partition surface identification algorithm in the BIM model.

Preferably, the data identification module includes: a node automatic processing submodule;

and the node automatic processing submodule is used for identifying nodes corresponding to the rod piece and a surface corresponding to the nodes through a preset node automatic processing algorithm based on the rod piece, the rod piece connection relation and the orientation setting.

Preferably, the node automatic processing submodule includes: a node identification unit and a node processing unit;

the node identification unit is used for identifying nodes corresponding to the rod pieces based on the rod pieces, the connection relation of the rod pieces and the orientation setting;

and the node processing unit is used for determining a surface corresponding to the node and a reinforcing panel for fixing the surface based on the preset type of rod piece.

Preferably, the node processing unit includes: the device comprises a first processing subunit, a second processing subunit, a third processing subunit, a fourth processing subunit and a fifth processing subunit;

the first processing subunit is used for obtaining a surface connected with the rod piece or corresponding to the node and the node of the rod piece through a tower body main material K node processing algorithm and a double-main-material tower body connecting node processing algorithm when the type of the rod piece is a tower body main material, and reinforcing the rod piece on the surface by a panel;

the second processing subunit is used for obtaining a surface connected with the rod piece or corresponding to a node and a node of the rod piece through a crosspiece main material tower body connection point processing algorithm when the rod piece is of the type of the cross arm main material, and reinforcing the rod piece on the surface by a panel;

the third processing subunit is configured to, when the type of the rod is a diaphragm, obtain a surface connected to the rod or corresponding to a node and a node of the rod through a single-double transition point processing algorithm, and reinforce a panel of the rod on the surface;

the fourth processing subunit is configured to, when the type of the rod is a cat-head angle steel crank, obtain, through a cat-head angle steel crank node processing algorithm, a surface corresponding to a node and a node connected to the rod or passing through the rod, and reinforce the rod on the surface by a panel;

and the fifth processing subunit is used for obtaining a surface which is connected with the rod piece or corresponds to the node and the node of the rod piece through a node processing algorithm of the wine cup angle steel crank arm when the type of the rod piece is the wine cup angle steel crank arm, and reinforcing the rod piece on the surface by the panel.

Compared with the closest prior art, the technical scheme provided by the invention has the following beneficial effects:

the technical scheme of the invention identifies the rod piece of the power transmission tower according to the pole tower load calculation result of the power transmission tower; acquiring the connection relation and the orientation rule of the rod piece based on the BIM; identifying nodes corresponding to each rod piece and a surface corresponding to the nodes based on the rod pieces, the rod piece connection relation and the orientation rule; the three-dimensional model of the power transmission tower is automatically generated based on the identified rod pieces, the nodes corresponding to the rod pieces and the surfaces corresponding to the nodes, the scheme is stable in performance, the function meets the delivery requirement, compared with the traditional three-dimensional lofting, the workload can be effectively reduced by about 30%, and the method has very remarkable economic and social benefits.

According to the technical scheme, the outer contour characteristics of the power transmission angle steel tower are fully analyzed through the researched and developed outer contour recognition algorithm of the front side of the power transmission tower, and the outer contour of the angle steel tower is effectively recognized.

The technical scheme of the invention develops an identification algorithm for main materials, cross arms, cross partition surfaces and other special rod pieces of a power transmission tower body. Through analyzing the geometrical characteristics and the load characteristics of the main materials, the cross arms and the cross partitions of the tower body, combining a load calculation result interface, the typical rod piece characteristics are effectively identified.

According to the technical scheme, the geometric construction characteristics of the nodes are analyzed by researching and developing an automatic processing algorithm of the nodes of the power transmission tower, and the typical nodes are effectively identified to carry out panel reinforcement processing on the typical nodes, so that the three-dimensional model of the power transmission tower is automatically built.

Drawings

FIG. 1 is a flow chart of a method of the present invention;

FIG. 2 is interface tower height and node related information of the present invention;

FIG. 3 illustrates interface segmentation, component materials and component and connection information in accordance with the present invention;

FIG. 4 is a schematic view of line 2 required by the present invention;

FIG. 5 is a schematic end point view of the present invention;

FIG. 6 is a dry front outer contour of the present invention;

FIG. 7 is a schematic view of the tower body main material identification of the present invention;

FIG. 8 is a cross arm main material of the present invention not directly connected to a tower body main material;

FIG. 9 is a cross-sectional view of the identification of the present invention;

FIG. 10 is a cross diagonal profile orientation of the front side of the tower of the present invention;

FIG. 11 is a flow chart of an automatic modeling of a power transmission angle steel tower of the present invention;

wherein, 4-1 represents the starting point of the line segment, 4-2 represents the end point of the line segment, 4-3 represents the line segment 1, and 4-4 represents the line segment 2; 5-1 represents the outline segment 1,5-2 represents the maximum included angle, 5-3 represents the start point, 5-4 represents the end point, and 5-5 represents the outline segment 2.

Detailed Description

For better understanding of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

On the basis of researching the technical development current situation of Building Information Modeling (BIM for short) and the current situation of the transmission tower industry at home and abroad, the core link for the integrated development of three-dimensional digital delivery, design and processing of the line is determined to realize the automatic Modeling of the transmission angle steel tower at the structural design stage of the transmission tower through deep analysis. Therefore, an automatic modeling function of the power transmission angle steel tower is developed based on geometric characteristics of the power transmission angle steel tower and load calculation results, the function can effectively identify key parts such as main materials, inclined materials, cross partition surfaces, cross arms and hanging points of the angle steel tower such as a cat-head tower, a wine glass tower and a Chinese character 'gan', the automatic modeling of the power transmission angle steel tower is realized through functions such as angle steel limb direction adjustment, positive and negative head arrangement, single-double-sided connecting plate arrangement and tower foot specification selection on the basis of identifying the key parts, an automatic modeling platform based on OSG is developed according to the method, verification is carried out in a plurality of projects, tests show that the method is stable in performance and meets delivery requirements, the work load can be effectively reduced by about 30% compared with traditional three-dimensional lofting, and the method has very remarkable economic benefit and social benefit.