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Method of determining power transmission line iron tower cross-arm wind load

A transmission line iron tower, wind load technology, applied in the direction of towers, data processing applications, building types, etc., can solve the problems of poor applicability of the formula, not covering design angles, etc., and achieve the effect of wide application range

Inactive Publication Date: 2016-07-06
STATE GRID CORP OF CHINA +2
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  • Claims
  • Application Information

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Problems solved by technology

The code only gives the cross-arm wind load calculation method for 4 wind directions. For the special tower design, it does not cover the special design angle wind, and the applicability of the formula is not strong. Therefore, it is necessary to further accurately calculate the cross-arm wind load calculation method

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  • Method of determining power transmission line iron tower cross-arm wind load
  • Method of determining power transmission line iron tower cross-arm wind load
  • Method of determining power transmission line iron tower cross-arm wind load

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Embodiment 1

[0037] Such as Figure 1-3 As shown, the invention of this example provides a method for determining the crossarm wind load of the transmission line iron tower. This method considers the influence of wind at different angles, and is not limited to the four commonly used ones in the "Technical Regulations for the Design of Tower Structures for Overhead Power Transmission Lines". Angle wind, with better applicability and higher precision.

[0038] In order to achieve the above-mentioned purpose, the present invention derives a full-angle wind load calculation method suitable for transmission line iron tower cross arms according to the wind tunnel test results and the current specification form, taking into account the influence of different angle winds.

[0039] W θ =K θ W sc (1)

[0040] K θ =asinθ+bcosθ(2)

[0041] W θ ——under the action of wind θ at any angle, the standard value of wind load along the wind direction of the cross arm;

[0042] θ—the included angle betw...

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Abstract

The invention relates to a method of determining a power transmission line iron tower cross-arm wind load, which is realized through a wind tunnel test and comprises the steps of: (1) obtaining parameters; (2) determining a cross-arm wind load partition coefficient K theta in the wind of different angles; (3) determining a cross-arm wind load standard value Wsc when wind blows in a mode of being perpendicular to the front face of a cross-arm; and (4) determining a wind load standard value W theta of the cross-arm along a wind direction. The method considers the influence of wind in different angles, is not limited to four common angles of wind in the Technical Regulation of design for tower and pole structures of overhead transmission line, and has the characteristics of better applicability and higher precision.

Description

Technical field: [0001] The invention relates to a method for determining the wind load, and more particularly relates to a method for determining the wind load for the iron tower of the transmission line. Background technique: [0002] With the rapid development of industries all over the world, the demand for power is becoming more and more urgent. Transmission towers are an important engineering structure for transporting power. It is very important to calculate the ultimate bearing capacity and analyze the reliability. [0003] For tower design, wind load is one of the main external loads, so the calculation of wind load is very important. At present, the calculation of cross-arm wind load in the iron tower mainly refers to the "Technical Regulations for the Design of Tower Structures for Overhead Power Transmission Lines" (DL / T5154-2002). The specification provides the wind load distribution methods for four wind directions commonly used in the cross-arm design, as fol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06E04H12/24
Inventor 朱彬荣张宏杰韩军科杨靖波刘海锋
Owner STATE GRID CORP OF CHINA