根据容许应力设计理论，对天线撑杆的风荷载和承载能力进行结构计算，并对天线撑杆进行内力分析。
According with the allowable stress design theory, the wind loads and load-carrying capacity of antenna struts are calculated, and their inter forces are analyzed.
以钢结构设计原理中的极限状态设计法或容许应力法为基础，阐述了预应力加固钢结构的分阶段加固设计计算原理和方法。
Based on limit-state design method in steel structure design principle, the principle and method of phased strengthening design of steel structures strengthened by prestressing is represented here.
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