Method for determining wind load body form coefficient of rod piece of power transmission tower structure
A technology of shape coefficient and determination method, which is applied in the testing of machine/structural components, elastic testing, measuring devices, etc., can solve the problem of inability to reflect the characteristics of wind load, the difficulty of reasonably reflecting the real wind load characteristics of main members, and the inability to meet Requirements for wind resistance design of power transmission structures, etc.
Active Publication Date: 2021-07-23
NINGBO ELECTRIC POWER DESIGN INST +1
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Problems solved by technology
This rough determination method is difficult to reasonably reflect the real wind load characteristics of the main members
In addition, the wind load of the rod in the transmission tower structure is not only affected by its own shape and position, but also by the interference of the surrounding rods. The interference effect cannot reflect its real wind load characteristics
[0004] At present, there are few researches in this area at home and abroad, which cannot meet the wind resistance design requirements of refined transmission structures.
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[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is developed on the basis of the technical solution of the present invention, but the protection scope of the present invention is not limited to the following embodiments.
[0032] In this embodiment: the transmission tower is a T-shaped angle steel ultra-high voltage linear tower, and its basic dimensions are as follows: the height of the tower is about 70m, and the total length of the cross arm is 60m. The target test member is located at the cross arm of the tower head.
[0033] According to the method provided by the present invention, the determination method of the wind load shape coefficient of the target test member at the cross-arm position of the transmission tower is as follows:
[0034] Step 1): According to the position of the target test member 1, select the entire tower head truncated model 2 for the tes...
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The invention belongs to the field of wind resistance of engineering structures, and relates to a method for determining a wind load body form coefficient of a rod piece of a power transmission tower structure. According to the method for determining the wind load body type coefficient of the rod piece of the power transmission tower structure, the interference effect of actual surrounding rod pieces can be actually considered, and the pneumatic interference effect of other rod pieces on the tested rod piece in the power transmission tower structure can be effectively reflected. The method is suitable for wind load testing of rod pieces of different types, positions and installation angles of power transmission tower structures. Through the method provided by the invention, the real wind load body type coefficients of different rod pieces in different wind directions under the condition that the rod pieces are interfered by surrounding rod pieces can be accurately obtained, and a valuing basis is provided for carrying out refined power transmission project wind resistance design.
Description
technical field [0001] The invention belongs to the field of wind resistance of engineering structures, and in particular relates to a method for determining the wind load shape coefficient of structural rods of transmission towers. Background technique [0002] In recent years, the high-voltage transmission line project has been vigorously developed. As the main supporting structure of the transmission network, the high-voltage transmission tower has the characteristics of tall and soft structure, complex and interlaced rods and so on. Wind load is one of the control loads in the structural design of transmission towers. [0003] In the past, the design research often focused on the overall wind load on the transmission tower and paid little attention to the actual wind conditions of the main members of the structure. The instability or damage of the main members may cause the damage of the transmission line under the action of strong winds. one of the reasons. As for the...
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IPC IPC(8): G01M9/08G01M5/00
CPCG01M9/08G01M5/0058
Inventor 钟维军徐海巍姚剑锋姚艳
Owner NINGBO ELECTRIC POWER DESIGN INST