顶铰
Its upper end is hinge connected to a trestle on top of the tower head.
它的上端与塔端上的支架成铰接.
And exemplifies the relation main section of front door, top of side wall and top cover, and exemplifies the relation main section design of front door, rear door, middle pillar and rear door hinge.
并例举了前门、侧围上部、顶盖关系主断面,以及前门、后门、中支柱、后门铰链关系主断面的设计。
This paper discusses mobile communication steel towers analysis and design method by an example of mobile communication steel tower with 33 meters high on the top of Chengde telecommunication hinge building.
本文以承德电信枢纽楼上33m移动通信铁塔为例,详细分析了铁塔在风载及自重作用下的受力情况及设计方法。
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