风荷载作用下高速公路广告牌的力学分析

Mechanics Analysis of Billboard of Expressway Under Wind Load

以风荷载为主要控制荷载,对高速公路两侧单立柱钢结构广告牌进行了力学分析。静力计算表明,无论是承受风荷载还是结构自重作用,广告牌结构对地基的要求都很高,因此在设计和施工时应加以重视;模态分析表明,该类广告牌结构在承受低频荷载时,主要是面板在振动,立柱基本不会发生振动,且具有足够的低频稳定性,因此在设计和施工时需对广告牌的地基和面板加以重视。

Mechanics analysis of single-column steel billboard on both sides of expressway by wind load as the main load control was given. Static calculations show that whether it is under wind load or the structure of self respect, the requirement of billboard foundation is very high, so the design and construction must be taken seriously; modal analyses show that the panel of this billboard vibrates obviously, and the column of this billboard structure does not vibrate and the column has enough low-order stabilities under low-order loads. Therefore, the foundation and panel must be taken seriously on the design and construction.