塔楼
输电塔
升级
结构工程
可靠性(半导体)
可靠性工程
工程类
传输(电信)
动力传输
失效模式及影响分析
接头(建筑物)
非线性系统
功率(物理)
计算机科学
物理
电气工程
操作系统
量子力学
作者
Faris Albermani,S. Kitipornchai
标识
DOI:10.1016/s0263-8231(02)00085-x
摘要
Transmission towers are a vital component and management needs to assess the reliability and safety of these towers to minimise the risk of disruption to power supply that may result from in-service tower failure. Latticed transmission towers are constructed using angle section members which are eccentrically connected. Factors such as fabrication errors, inadequate joint details and variation of material properties are difficult to quantify. Consequently, proof-loading or full-scale testing of towers has traditionally formed an integral part of the tower design. The paper describes a nonlinear analytical technique to simulate and assess the ultimate structural response of latticed transmission towers. The technique may be used to verify new tower design and reduce or eliminate the need for full-scale tower testing. The method can also be used to assess the strength of existing towers, or to upgrade old and aging towers. The method has been calibrated with results from full-scale tower tests with good accuracy both in terms of the failure load and the failure mode. The method has been employed by electricity utilities in Australia and other countries to: (a) verify new tower design; (b) strengthen existing towers, and (c) upgrade old and aging towers.
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