某超长工业建筑结构温度变形研究

对某超长工业厂房进行温度变形分析,温度荷载选取时考虑气温变化引起结构构件产生的季节温差、骤变温差和日照温差,并计入混凝土收缩影响,采用正常使用极限状态下荷载标准组合工况,利用有限元软件ETABS进行模拟分析,探求结构温度变形规律。同时利用结构II对比分析伸缩缝设置位置的不同对结构温度变形的影响。结合简化单榀框架模型,揭露多高层超长框架结构在温度荷载作用下的楼层内力和变形分布规律,提出伸缩缝设置位置的合理性建议,节约结构建造成本,提高使用效能,供工程建设中参考。

THE TEMPERATURE DEFORMATION RESEARCH OF AN INDUSTRIAL BUILDING STRUCTURE WITH LARGE LONGITUDINAL LENGTH

The temperature deformation analysis of a long industrial plant structure was carried out.The temperature loads included the weather changes,such as seasonal temperature changes,sudden temperature changes and sunshine temperature changes,and the effect of concrete shrinkage.The normal limit state load standard combination was adopted.The finite element software ETABS was used for simulation to study the structural temperature deformation.Furthermore,structure II was set up for research of the influence of the situation of the expansion joints on the temperature deformation of the structure.Finally,a simplified frame model was built to expose the distribution law of the structure's internal force and deformation in multi-stories or high-rise structures with large longitudinal length.Some reasonable suggestions on the position of expansion joints were presented,which could save the construction cost,improve the using effectiveness,and could be referenced for engineering construction.