同济大学学报（自然科学版）2026，Vol.54Issue(2)：171-181,11.DOI:10.11908/j.issn.0253-374x.24324
爆炸荷载作用下钢筋混凝土构件的缩尺效应
Scaling Effects of Reinforced Concrete Members Under Blast Loads
摘要
Abstract
To investigate the scaling effect on reinforced concrete(RC)members under blast loads,numerical models were established based on existing explosion test data from RC members with various scaling factors.The research primarily focused on the scaling effect of the concrete material strain rate and demonstrated the feasibility of using scaled finite element models to predict the dynamic response of prototype structures.The results show that if the scaling effect of strain rate is not considered,the smaller the scaling factor,the less the damage and dynamic response of the scaled numerical model match the similarity criteria.For a scaling factor of 0.1,the mid-span displacement errors of RC beams at scaled blast distances of 0.50 m·kg-1/3 and 0.44 m·kg-1/3 are 32.5%and 75.1%,respectively.The mid-span displacement errors of RC slabs at scaled distances of 0.591 m·kg-1/3 and 0.518 m·kg-1/3 are 45.08%and 46.93%,respectively.After scaling the dynamic increase factor(DIF)curve,the results of numerical model calculations align more closely with similarity ratios,with errors generally less than 10%.Finally,a process was proposed for predicting the dynamic response of prototype structures using scaled test results.关键词
缩尺效应/应变率效应/爆炸/数值模拟/钢筋混凝土(RC)梁/钢筋混凝土板Key words
scaling effect/strain rate effect/blast/numerical simulation/reinforced concrete(RC)beam/reinforced concrete slab分类
数理科学引用本文复制引用
潘昊瑾,潘钻峰,黄正,张海鹏,司豆豆..爆炸荷载作用下钢筋混凝土构件的缩尺效应[J].同济大学学报（自然科学版）,2026,54(2):171-181,11.基金项目
国家自然科学基金(52078368) （52078368）
