风荷载作用下核心筒对整体钢平台的影响分析

Interaction of Core Tube on Integral Steel Platform System Under the Wind Load

核心筒与整体钢平台之间的共同作用使得整体钢平台的计算分析变得复杂化。以随机振动理论为基础,分析了脉动风荷载作用下核心筒对于整体钢平台风振力的影响。结果表明,当核心筒高度比较低时,核心筒由于刚度很大,对于钢平台的风振力几乎没有影响;当核心筒高度较高时,核心筒的存在减小了钢平台顶部的风振力,对整体钢平台是有利的。因此,整体钢平台的计算过程可以不考虑核心筒的影响。

Coupling between core tube and the integral steel platform system makes the calculation and analysis of integral steel platform system become complicated. Based on the random vibration theory, this paper analyzed the influence of the core tube on integral steel platform system under fluctuating wind. The results show that the core tube has almost no impact on wind vibration force of the integral steel platform system because of its large rigidity when the height of the core tube is low. When the core tube is higher, the core tube can reduce the wind-induced force of the integral steel platform system which is advantageous for the integral steel platform system. Therefore, the calculation process of integral steel platform ean not consider the impact of core tube.