Two, rotary tooling, in order to prevent the torsional deformation of tower crane type standard section, between the two supporting plate should be added to the diagonal rod.
翻转式工装，为了防止塔机片式标准节的扭转变形，在两支板之间应加上斜杆。
Engineers tried to adopt the anchor rod static pressure pile technology in design of tower crane foundations and this technology can improve synthetical benefit of projects.
针对这一情况，尝试在塔式起重机基础中应用锚杆静压桩，这对提高工程综合效益具有较大的意义。
There are many long and elastic round cross-section rod structures in quayside container crane, whose frequency are so low that it is easy to arouse crosswind resonance.
岸边起重机结构中有许多长的弹性圆截面杆件，自振频率比较低，很容易发生横风共振。
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