Study on the Application of Weathering and Cold-Formed Steel in Transmission Tower

Yang, Fengli; Yang, Jingbo; Li, Zheng

doi:10.1109/appeec.2009.4918837

Cited by 1 publication

(1 citation statement)

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“…With the continuous development of the power grid system, the electrical transmission tower focuses on the development of large-scale and steel structure. The needed bearing capacity of a single component increases, therefore, the requirements for material's performance become higher [1,2]. Transmission line tower with a single large-scale angle steel can improve bearing capacity, decrease tower weighting, realize simple processing and installation and reduce the cost.…”

Section: Introductionmentioning

confidence: 99%

Low Temperature Mechanical Properties of Power Transmission Tower Steel

Wang

Guo

et al. 2017

MSF

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The tensile and impact tests were used to study the mechanical properties under different temperatures of 300 mm large-scale angle steel at different positions, especially the tensile strength, yield strength, total elongation and impact toughness in the range of-40 oC to 20 oC. The results showed that different regions had great differences in the microstructures and impact toughness, in which the size of edge region was the smallest and the impact toughness was the best. However, the coarsened grain of heat affected zone at weld region had deteriorated to the low temperature impact toughness. When the impact energy was 34 J, the ductile-brittle transition temperature of weld, center, vertex and edge were-7.2 oC, -33.0 oC, -31.5 oC and far less than-40 oC, respectively. Meanwhile, because the banded structure was detrimental to the ductility, the elongation of rolling direction was lower than vertical direction. The strength of weld region was higher than other locations, but the elongation was obviously decreased.

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Section: Introductionmentioning

confidence: 99%