结构内爆炸荷载作用下钢筋钢纤维混凝土抗爆墙设计探讨

STUDY OF BLAST WALL DESIGN UNDER EXPLOSION LOAD FROM ITS INTERNAL STRUCTURE

基于内爆炸原理,分析了结构内爆炸荷载的组成,提出了内爆炸荷载作用下抗爆墙的解析计算方法,对钢筋混凝土抗爆墙设计进行优化;提出将钢纤维应用于抗爆墙设计,并结合实例对钢筋混凝土与钢筋钢纤维混凝土抗爆墙进行计算对比。结果表明:准静态气体压力使结构内抗爆隔墙所受荷载比建筑外抗爆墙高出25%以上;在相同距离、相同爆炸当量条件下,钢筋钢纤维混凝土比普通钢筋混凝土抗爆墙厚度减少11%。

Based on internal explosion principle, this paper analyzed the component oi explosion loaa and proposed an approximate analytical calculation method of blast wall under the internal explosion load. Steel fibre was advised to be used in the design of blast wall. The paper also calculated comparatively the properties between blast wall out of steel fibre concrete and conventional concrete based on practical example,indicating that the load from quasi-static gas pressure were 25% more than that from outside buildings; and that, within the same distance and under the equivalent explosion load, the thickness of blast wall out of steel fibre concrete was 11% less than that out of conventional concrete.