高压物理学报2025，Vol.39Issue(4)：16-27,12.DOI:10.11858/gywlxb.20240873
爆炸作用下全户内变电站装配式墙板的动力响应实验研究
Dynamic Response Experiment of Prefabricated Wall Panels for a Whole-Indoor Substation under Blast Loading
摘要
Abstract
A novel prefabricated wall panel structure for substations was developed by integrating fiber cement board,aluminum honeycomb plate,and aluminum alloy plate.The dynamic response characteristics of the structure under explosive loads were investigated through experimental studies.The effects of overpressure loads at different explosive mass and loading distances were examined,and the impact of varying honeycomb cell sizes on structural deformation failure mode,back face deflection and strain,core compression,and fiber cement board crack distribution was analyzed.The results indicate that within a confined space,the time characteristics of explosion overpressure are similar to those in an unconfined space.The peak overpressure measured independently at the center is between 2.4 and 10.0 times that measured directly at the edge.The positive pressure duration measured independently at the center is between 0.44 and 0.71 times that measured directly at the edge.The predominant deformation mode of the structure involves front panel depression and rear panel bulging.Horizontal cracks in the front face of the fiber cement board are predominantly located near its long side boundary,while cracks in the back face are mainly distributed near its center and diagonal areas.Compared with structures featuring smaller honeycomb cell sizes,those with larger honeycomb cell sizes exhibit greater residual deflection on their back faces and longer total crack lengths in their fiber cement boards.关键词
装配式墙板/蜂窝夹芯板/纤维水泥板/爆炸/动力响应Key words
prefabricated wall panel/honeycomb sandwich panels/fiber reinforced cement board/blast/dynamic response分类
力学引用本文复制引用
李林,刘勇,魏珍中,马小敏,雷建银,李世强..爆炸作用下全户内变电站装配式墙板的动力响应实验研究[J].高压物理学报,2025,39(4):16-27,12.基金项目
国家自然科学基金(12202303,12072219,12372363) （12202303,12072219,12372363）
