Research on Wind-Induced Reliability of Double Column Suspended Guyed Tower in Strong Wind Area

Abstract

The ultra-high voltage transmission line is long, which needs to pass through the various complex terrains. In order to ensure the safe structural system, understanding and grasping the wind-induced response and reliability of double column suspended guyed tower (DCSGT) in strong wind area of Gobi Desert are basic requirements. Through combining the conditional probability density of wind speed and frequency function of wind direction, the successive-type joint distribution model of wind speed and direction is obtained by multiplication theorem. In accordance with the principle of equivalent extreme value event, through utilizing the statistical moment point estimation method, the first four-order statistical moment information of equivalent extreme value variables is solved. The probability density function (PDF) of DCSGT response is calculated in accordance with these statistical moments. The dynamic reliability index and failure probability of DCSGT are solved by the moment method.

Wind-Induced Vibrations and Gust Response Factors of the Cabin–Cable–Tower System

“…Simultaneously, the feed cabin has specific displacement requirements during operation because excessive wind-induced vibrations may affect its normal functioning [4]. From the aforementioned points, it can be concluded that a large-scale radio astronomical telescope belongs to the category of flexible spatial structures, and wind loads constitute the controlling load that impacts their normal operation and structural safety [5,6]. Moreover, the construction cost of such structures is typically significant, and any wind-induced damage would result in unacceptable catastrophic losses, underscoring the necessity to study the wind-induced vibration characteristics of the CCT system.…”