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摘要: 基于大型非线性动力有限元软件LS-DYNA,通过改变墙体的约束情况、砌体材料的强度等级、纵 向配筋率、高宽比、荷载峰值、墙体距爆心点距离、墙体开洞以及粘贴玻璃纤维复合材料等,得到配筋砌体墙在 爆炸荷载作用下的变形规律、破坏情况以及结构墙体中砌体材料、钢筋的应力和位移随时间的变化规律。同 时对各种不同工况下配筋砌体墙的防爆性能进行比较,找出了影响结构响应最为重要的因素,给配筋砌体墙 防爆设计提供参考。Abstract: BasedonthenumericalanalysiswithLS-DYNA,thedeformationanddamageofthereinforcedmasonrywallswereinvestigatedbyconsideringthefollowingfactors: wall-borneconstraint, masonrymaterialstrengthgrade,verticalreinforcementratio,height-to-spanratio,loadpeak,distancefromexplosivecentertowall, aholeinthewallandGFRPonthewall.Andthedistance-time curvesofthewallswereobtainedaswellasthestress-timecurvesofthemasonrymaterialsandsteel bars.Meanwhile,theanti-explosionperformancesofthereinforcedmasonrywallswerecomparedin thedifferentcasesandtheimportantfactorsinfluencingthestructureresponseweredetermined.Itis helpfulfortheanti-explosiondesignaboutthereinforcedmasonrystructure.
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Key words:
- mechanicsofexplosion /
- dynamicresponse /
- LS-DYNA /
- reinforcedmasonrywall
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