结构工程师2023，Vol.39Issue(6)：44-53,10.
内爆炸下扁平大空间中柱表面荷载的确定
Determination of Surface Blast Loading of Middle Column in a Flat Large Space under Internal Explosion
刘中辉 1匡志平2
作者信息
- 1. 同济大学建筑工程系,上海 200092||浙江工业职业技术学院,绍兴 312000
- 2. 同济大学建筑工程系,上海 200092
- 折叠
摘要
Abstract
In order to study the blast load on the middle column when the explosion occurred in the flat large space structure such as underground parking lot,AUTODYN software was used to analyze the influence of scaled distance,section size and column height on the blast load on the front and back of the middle column.The blast load is characterized by the reflected overpressure peak and the reflected specific impulse at the bottom center of the front,as well as the normalized reflected overpressure peak and the normalized reflected specific impulse at any height of the front and back.The research shows that the section width has a great influence on the reflected overpressure peak value and the reflected specific impulse at the center of the bottom of the front of the column,which decreases with the increase of the scaled distance,and the column height has little influence on it.The section width and column height have little influence on the normalized reflected overpressure peak and normalized reflected specific impulse of the front and back of the middle column.The influence of scaled distance on the normalized reflected overpressure of the front is greater when the relative column height is greater than 0.8,and the influence on the normalized reflected overpressure peak of the back and the normalized reflected specific impulse of the front and back is smaller.Finally,the calculation formula of the characteristic parameters of the blast load of middle column in a flat large space under internal explosion is given and verified.关键词
内部爆炸荷载/扁平大空间/中柱表面/超压峰值/比冲量Key words
internal blast loading/flat large space/middle column surface/overpressure peak/specific impulse引用本文复制引用
刘中辉,匡志平..内爆炸下扁平大空间中柱表面荷载的确定[J].结构工程师,2023,39(6):44-53,10.
