Spatial force design method for angle steel bolt group of transmission tower hanging line
A design method and technology of transmission towers, applied in design optimization/simulation, electrical digital data processing, instruments, etc.
Active Publication Date: 2022-06-24
SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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Problems solved by technology
[0005] The purpose of the present invention is to provide a method for designing the spatial force of the angle steel bolt group of the transmission tower hanging line, so as to solve the aforementioned problems
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Embodiment
[0050] see Figure 1-Figure 3 , this embodiment proposes a method for designing the space force of a power transmission tower hanging angle steel bolt group. The first surface 11 of the line hanging angle steel 10 is provided with a line hanging hole 13, and the second surface 12 is provided with a matrix distributed along the XY plane. For the bolt hole group used to connect the bolt group 14, the XY plane and the second plane 13 coincide; the X direction is parallel to the extension direction of the wire hanging angle steel, the Y direction is perpendicular to the extension direction of the wire hanging angle steel; the Z direction is perpendicular to the XY plane.
[0051] The second surface of the wire-hanging angle shown in this embodiment is connected with bolt groups of 3 rows and 4 columns, 3 rows in the X direction and 4 rows in the Y direction. The arrangement of the connecting bolts is not limited to the arrangement shown in the figure, and other regular arrangements...
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The invention relates to the field of power transmission tower design, aims to solve the problem that the force mode of the hanging point is complicated, and the structural design and verification are difficult to realize in engineering design, and provides a force design method for the space force design of the angle steel bolt group of the power transmission tower, one side of the angle steel hanging on the line There are hanging wire holes on the upper surface and bolt hole groups on the other side; when calculating the spatial tension-bending coupling effect of the bolt group, the neutral axis I of the bolt group bending around the Y axis Y‑Y is the center position of the bolt group, and the neutral axis I bent around the X axis X‑X It is the center line of the outermost row of bolts and limbs in the X direction; for the calculation of the space tension bending effect, the external force F is converted to the X and Y directions, and then the internal force is calculated; the bending moment in the X and Y directions is calculated according to the neutral axis. The resulting shaft pull internal force, which in turn is related to F Z The resulting bolt axial tension is superimposed to obtain the axial tension of the bolt; the calculation of the torsional effect of the bolt group is calculated with the intersection of the neutral axes in the X and Y directions as the torsion center. The beneficial effect of the invention is that the design checking calculation is reasonable and reliable, and the design method is proposed for the first time.
Description
technical field [0001] The invention relates to the field of power transmission tower design, in particular to a method for designing the space stress of a connection node of a power transmission tower hanging line angle steel bolt group. Background technique [0002] With the continuous increase of the transmission line tower load, the structural design of the transmission tower is very important, and the hanging angle steel node is the core connection for transmitting the wire load, and its importance is more and more prominent. In order to facilitate the installation and removal of wire fittings in the project, the wire hanging points are usually connected by short angle steel head bolts (ie, the hanging wire angle steel connection nodes). [0003] In the engineering design, there is a lack of relevant research on the force of the bolt group connecting the wire hanging point, and the design code for the tower design does not give the design method of the hanging point bol...
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IPC IPC(8): G06F30/20G06F119/14
CPCG06F30/20G06F2119/14
Inventor 何松洋马海云蒋锐韩大刚王劲李力黄兴刘翔云冯勇鄢秀庆辜良雨刘洪昌李林廖邢军周建军董碧霞余斌罗海力蒲凡汤欢高见刘进通
Owner SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP