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结合《钢结构设计规范》对于柱间支撑布置的规定,指出了目前关于柱间支撑的相关研究中没有考虑的因素,针对具有特殊工艺的大跨度结构的构成特点,对单榀纯柱间支撑与单柱的刚度性能进行了理论推导和参数化分析,揭示了单柱与纯支撑刚度比值的分布规律.针对柱距、支撑层数和构件截面等参数的变化,对单榀柱间支撑抗侧刚度和温度作用下结构性能的影响进行了参数化分析,提出了能够提高柱间支撑抗侧刚度并减小温度引起的附加内力的支撑布置规律.研究了柱间支撑在结构中的布置位置和柱截面对结构水平荷载和温度作用下性能的影响,得到了一些有益的结论.最后以一大跨度钢结构厂房的设计为例,说明了本文研究结论在工程的应用.
In combination with the provisions of Steel Structure Design Code for the arrangement of supports between columns, the factors that are not considered in the related studies on the support between columns are pointed out. According to the characteristics of large span structure with special process, And the stiffness of single column were theoretically deduced and parametric analysis was carried out to reveal the distribution law of the ratio between single column and pure support stiffness.For the variation of parameters such as column spacing, support layer number and component cross section, Lateral stiffness and temperature of the structure of the performance of the parametric analysis of parameters can be put forward to improve the column stiffness between the column and reduce the temperature caused by the additional internal force of the support arrangement.Study column arrangement of the support structure in the position And column cross-section on the performance of the structure under horizontal load and temperature, some useful conclusions are obtained.Finally, the design of a large-span steel structure workshop is taken as an example to illustrate the application of the conclusions of this paper in engineering.