CN106326504A - Tower material location method for power transmission tower spatial model - Google Patents
Tower material location method for power transmission tower spatial model Download PDFInfo
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- CN106326504A CN106326504A CN201510333940.7A CN201510333940A CN106326504A CN 106326504 A CN106326504 A CN 106326504A CN 201510333940 A CN201510333940 A CN 201510333940A CN 106326504 A CN106326504 A CN 106326504A
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Abstract
The invention relates to a tower material location method for a power transmission tower spatial model. The method comprises the steps of establishing a tower material section of a power transmission tower in a local coordinate system; selecting a location vector according to an actual placing direction of a tower material of the power transmission tower; and locating the tower material of the power transmission tower in a global coordinate system according to the tower material section, the location vector and a vector location method. According to the technical scheme provided by the method, the tower material location problem of a power transmission tower structure is solved.
Description
Technical field:
The present invention relates to power transmission engineering field, be specifically related to a kind of transmission tower spatial model tower material location side
Method.
Background technology:
Transmission tower tower material quantity is many, and there are the various ways such as angle steel, steel pipe, the cross section of tower material in tower material cross section
Placing direction is more complicated, is difficult to quickly set up and actual transmission line tower structure tower material placing direction
Consistent spatial model, transmission tower tower material is positioned to for the main skill of transmission tower spatial model modeling
Art bottleneck.
The problem solving transmission tower structural tower material location, it is possible to achieve transmission tower beam element models, defeated
The FEM (finite element) model of electric pole tower generally uses bar unit model modeling, and bar unit model has can only tension
Pressure, it is impossible to by the feature of moment of flexure, and this feature and true type shaft tower differ, true type shaft tower also can be subject to
To the impact of moment of flexure, beam element modeling is therefore used to need to consider the placing direction in cross section, only tower material
Position basically identical with practical situation, just can be simulated effect accurately.
Summary of the invention:
It is an object of the invention to provide a kind of transmission tower spatial model tower material localization method, solve transmission of electricity
The problem of tower structure tower material location.
For achieving the above object, the present invention is by the following technical solutions: a kind of transmission tower spatial model tower
Material localization method, including:
The tower material cross section of electric power pylon is set up in local coordinate system；
The actual placing direction of tower material according to electric power pylon selects location vector；
In global coordinate system, transmission of electricity ferrum is positioned according to described tower material cross section, location vector and vector positioning mode
The tower material of tower.
In described local coordinate system, the centroidal principal axis direction in described tower material cross section is respectively y-axis and z-axis；
Two end points in described tower material cross section are i-node and j node, from described i-node to the side of described j node
To the x-axis direction being described local coordinate system.
Any one discord x-axis direction that described location vector is chosen in coordinate system in x-axis and z-axis cross section
Parallel vector is location vector vecxz.
Described vector positioning mode is for determine described local coordinate system and world coordinates by described location vector
The relation of system, so that it is determined that the putting position that tower material is in the global coordinate system of space.
Under global coordinate system, described tower material cross section from i-node to the link vector of j node be vector
vecx；The centroidal principal axis y-axis in described tower material cross section vector v ecy under global coordinate system is by described location
Vector v ecxz obtains with described vector v ecx multiplication cross；Described tower material cross-section centroid main shaft z-axis is sat in the overall situation
Vector v ecz under mark system is obtained with described vector v ecx multiplication cross by described vector v ecy.
In described step: also include before setting up the tower material cross section of electric power pylon in local coordinate system:
Set up local coordinate system and global coordinate system；
The node coordinate of the electric power pylon in definition coordinate system；
Annexation according to described node coordinate and electric power pylon sets up rod member.
Described local coordinate system is with the rod member direction of electric power pylon as x-axis, with an end points of described rod member
Rectangular coordinate system in space as zero.
The node coordinate process of the electric power pylon in described definition coordinate system is: under global coordinate system, build
Vertical transmission tower model, defines node coordinate under global coordinate system on the rod member of all electric power pylons,
The most uniquely determine the positional information of all nodes.
According to described annexation, node is connected to become rod member；Two end points of described rod member determine.
With immediate prior art ratio, the present invention provides technical scheme to have a following excellent effect:
1, technical scheme uses vector localization method, utilizes location vector, orients tower material
Placing direction；
2, to have step simple for technical scheme, it is achieved readily feature；
3, technical scheme utilizes less vector location transmission tower tower material, it is achieved that transmission of electricity
Shaft tower spatial modeling；
4, technical scheme is ensureing spatial model and actual transmission line tower structure tower material side
While consistent, substantially increase modeling efficiency；
5, technical scheme can realize the rapid modeling of angle steel tower spatial model, to power transmission rod
Tower structure construction has certain reference.
Accompanying drawing explanation
The method flow diagram that Fig. 1 provides for technical solution of the present invention；
The node coordinate schematic diagram of the definition electric power pylon that Fig. 2 provides for the embodiment of the present invention；
The annexation according to electric power pylon that Fig. 3 provides for the embodiment of the present invention sets up rod schematic representation；
Angle steel schematic cross-section under the local coordinate system that Fig. 4 provides for the embodiment of the present invention；
The vectorial multiplication cross schematic diagram that Fig. 5 provides for the embodiment of the present invention；
The vector location schematic diagram that Fig. 6 provides for the embodiment of the present invention；
Angle steel schematic cross-section under the local coordinate system that Fig. 7 provides for the embodiment of the present invention；
The transmission tower spatial model schematic diagram that Fig. 8 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be described in further detail.
Embodiment 1:
The invention of this example provides a kind of transmission tower spatial model tower material localization method, as shown in Figure 1:
The coordinate of all nodes defined in global coordinate system, then sets up tower material according to the annexation of node,
Rear consideration tower material putting in space, it is achieved transmission tower tower material is in the location in space.General power transmission tower
Use bar unit models, and does not consider the tower material problem of putting in space, can not but use bar unit to model
The impact of consideration moment of flexure suffered by electric power pylon, in order to consider the Moment Influence received of electric power pylon,
Need to utilize beam element to model, and consider the placing direction of tower material.
For the problem solving transmission tower structural tower material location, it is achieved transmission tower spatial model quick
Modeling, present invention uses the placing direction of the tower material of vector positioning mode location transmission tower, it is achieved that tower
Material cross section is tied to the conversion of global coordinate system from local coordinate.
In transmission tower structure, steel tube tower and angle steel tower can be divided into according to the difference of tower material.Steel pipe cuts
Face is centrosymmetry cross section, is also zhou duicheng tuxing, steel tube section planar any rotation and former
The shape in cross section is the same.Angle cross section is mono-symmetry figure, and angle cross section planar rotates one
Determine angle, and the shape in former cross section is different.
In space, after two end points of transmission tower tower material determine, owing to angle cross section is mono-symmetry
Cross section, angle steel towards can not uniquely determine, in space be flapped toward possibilities much more very,
Extremely complex.
The localization method of the present invention includes herein below:
One, global coordinate system and local coordinate system are established
Global coordinate system and local coordinate system are all rectangular coordinate system in space.Rectangular coordinate system in space is with sky
Between 1 O be initial point, set up three number axis perpendicular to each other；X-axis, y-axis, z-axis, at this moment set up
Rectangular coordinate system in space Oxyz, its midpoint O are referred to as zero, and three axles are referred to as coordinate axes, by
The plane that coordinate axes determines is referred to as coordinate plane.
Global coordinate system is with Z axis as vertical direction, and straight up, X-Y plane is horizontal plane to+Z,
Coordinate (0,0,0) point is zero.
Local coordinate system is with rod member direction as x-axis, using an end points of rod member as the sky of zero
Between rectangular coordinate system.
Two, the node coordinate of electric power pylon is defined
As in figure 2 it is shown, under global coordinate system, set up transmission tower model, need to define all rod members
Upper node coordinate under global coordinate system, the most uniquely determines the positional information of all nodes.
Annexation according to electric power pylon sets up rod member
After the coordinate definition of all nodes completes, according to annexation, node is connected to become rod member, at this moment
Two end points of rod member determine, but tower material cross section the most uniquely determines putting of space, such as Fig. 3
Shown in.
Three, under local coordinate system, tower material cross section is set up
As illustrated in figures 4 and 7, the cross section of tower material defines in the y-z plane of local coordinate system.With angle steel
As a example by tower material, as shown in Figure 1, it is respectively y-axis and z-axis, in office with the centroidal principal axis in tower material cross section
Tower material cross section is set up under portion's coordinate system.
Four, vector positioning mode positioning tower material
Two vectorial multiplication crosses are vectors, and two vectorial multiplication cross vectors hang down with the two vector
Directly.As shown in Figure 5, VxU is a vector, and U is perpendicular with vector V, vector.
The cross section of transmission tower pole stock, after local coordinate system has been given a definition, needs by location vector true
Determine the relation of local coordinate system and global coordinate system, determine tower material putting position in space.
As shown in Figure 6, local spatial coordinate system is xyz, and global coordinate system is XYZ, sits in local
In mark system, the centroidal principal axis direction of tower material is respectively y-axis and z-axis, and two end points of tower material are i-node
With j node, the direction from i-node to j node is the x-axis direction of local coordinate system.Local coordinate system
The cross section at x-axis direction and place, z-axis direction is xz cross section, and that can choose on xz cross section here is any
One parallel vector in discord x-axis direction is location vector vecxz, and location vector vecxz is sat in entirety
Vector value under mark system is (vecxzX, vecxzY, vecxzZ).
Definition location vector vecxz can positioning tower material in global coordinate system, tower material is from i-node to j
The link vector of node vector v ecx under global coordinate system, the centroidal principal axis y-axis of tower material is sat in the overall situation
Vector v ecy under mark system, can be obtained with vector v ecx multiplication cross by space orientation vector v ecxz, tower material
Centroidal principal axis z-axis vector v ecz under global coordinate system can be by vector v ecy and vector v ecx multiplication cross
Obtain.
Five, the selection of location vector
Location vector need to be according to actual the putting to selection of transmission tower tower material.Because location vector can be selected
Take the vector that any one the discord x-axis direction on xz cross section is parallel, it is possible to use less vector is fixed
Position tower material, such as: vector v ecxz1=(0,0,1) definition non-vertical can be utilized to put rod member, utilize
Vecxz2=(1,0,0) defines vertical display rod member.Ultimately form electric power pylon spatial model, such as Fig. 8
Shown in.
Finally should be noted that: above example is only in order to illustrate technical scheme rather than to it
Limit, although those of ordinary skill in the field with reference to above-described embodiment it is understood that still can be right
The detailed description of the invention of the present invention is modified or equivalent, and these are without departing from present invention spirit and model
Any amendment enclosed or equivalent, the claims of the present invention all awaited the reply in application it
In.
Claims (9)
1. a transmission tower spatial model tower material localization method, it is characterised in that: including:
The tower material cross section of electric power pylon is set up in local coordinate system；
The actual placing direction of tower material according to electric power pylon selects location vector；
In global coordinate system, electric power pylon is positioned according to described tower material cross section, location vector and vector positioning mode
Tower material.
2. a kind of transmission tower spatial model tower material localization method as claimed in claim 1, it is characterised in that:
In described local coordinate system, the centroidal principal axis direction in described tower material cross section is respectively y-axis and z-axis；Described
Two end points in tower material cross section are i-node and j node, and the direction from described i-node to described j node is institute
State the x-axis direction of local coordinate system.
3. a kind of transmission tower spatial model tower material localization method as claimed in claim 2, it is characterised in that:
It is parallel with any one the discord x-axis direction on z-axis cross section that described location vector chooses x-axis in coordinate system
Vector is location vector vecxz.
4. a kind of transmission tower spatial model tower material localization method as claimed in claim 3, it is characterised in that:
Described vector positioning mode is to be determined the pass of described local coordinate system and global coordinate system by described location vector
System, so that it is determined that the putting position that tower material is in the global coordinate system of space.
5. a kind of transmission tower spatial model tower material localization method as claimed in claim 4, it is characterised in that:
Under global coordinate system, described tower material cross section from i-node to the link vector of j node be vector v ecx；Described
The centroidal principal axis y-axis in tower material cross section vector v ecy under global coordinate system by described location vector vecxz with
Described vector v ecx multiplication cross obtains；Described tower material cross-section centroid main shaft z-axis vector v ecz under global coordinate system
Obtained with described vector v ecx multiplication cross by described vector v ecy.
6. a kind of transmission tower spatial model tower material localization method as claimed in claim 1, it is characterised in that:
In described step: also include before setting up the tower material cross section of electric power pylon in local coordinate system:
Set up local coordinate system and global coordinate system；
The node coordinate of the electric power pylon in definition coordinate system；
Annexation according to described node coordinate and electric power pylon sets up rod member.
7. a kind of transmission tower spatial model tower material localization method as claimed in claim 6, it is characterised in that:
Described local coordinate system is with the rod member direction of electric power pylon as x-axis, using an end points of described rod member as seat
The rectangular coordinate system in space of mark initial point.
8. a kind of transmission tower spatial model tower material localization method as claimed in claim 6, it is characterised in that:
The node coordinate process of the electric power pylon in described definition coordinate system is: under global coordinate system, sets up transmission of electricity
Iron tower model, defines node coordinate under global coordinate system on the rod member of all electric power pylons, in space
Uniquely determine the positional information of all nodes.
9. a kind of transmission tower spatial model tower material localization method as claimed in claim 6, it is characterised in that:
According to described annexation, node is connected to become rod member；Two end points of described rod member determine.
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| CN201510333940.7A CN106326504B (en) | 2015-06-16 | 2015-06-16 | transmission tower space model tower material positioning method |
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Cited By (1)
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| CN116625219A (en) * | 2023-07-25 | 2023-08-22 | 北京华力方元科技有限公司 | Distance monitoring method and system for insulator string of electric power iron tower |
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| CN103268379A (en) * | 2013-05-21 | 2013-08-28 | 甘肃省电力公司检修公司 | Method for accurately calculating spacing distance between any position spaces of overhead power transmission wires |
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| CN116625219A (en) * | 2023-07-25 | 2023-08-22 | 北京华力方元科技有限公司 | Distance monitoring method and system for insulator string of electric power iron tower |
| CN116625219B (en) * | 2023-07-25 | 2023-10-03 | 北京华力方元科技有限公司 | Distance monitoring method and system for insulator string of electric power iron tower |
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