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钢厂大型高炉炉顶结构体量大、外形特殊,在进行新旧炉顶结构置换时采用高位整体拆除、高空滑移与安装可有效缩短施工工期,经济效益明显。结合宝钢1号高炉大修,通过风洞模型测力试验,分别测量出其新旧高炉炉顶结构在模拟大气边界层紊流下的风荷载系数,考虑了炉顶结构在不同滑移位置的影响,根据试验结果以及国内外相关文献,分析讨论了其考虑动力影响的风振系数,分析了其风荷载,进而对其在滑移过程的风致抗倾覆稳定性进行了验算,分析表明,新旧高炉炉顶结构在10年重现期的风压下,抗倾覆稳定性满足要求。
The large-scale blast furnace roof structure of large volume, special shape, the replacement of old and new roof structure with a high overall removal, high-altitude sliding and installation can effectively shorten the construction period, significant economic benefits. Combined with the overhaul of Baosteel Blast furnace No. 1, wind load coefficients of the old and new blast furnace roof structures under simulated atmospheric boundary layer turbulence were respectively measured through the wind tunnel model force test. The influences of the roof structure on different slip positions were considered. Test results and relevant literature at home and abroad, the paper analyzes and discusses the wind-induced vibration coefficient considering its dynamic influence, analyzes its wind load, and then verifies its wind-induced anti-overturning stability during slipping. The analysis shows that the wind- Under the wind pressure of 10-year recurrence period, the stability of anti-overturning meets the requirements.