蒸压加气混凝土动态力学性能与损伤模型

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关键词：蒸压加气混凝土；应变速率；力学性能；损伤本构模型；Weibull分布中图分类号：X773 文献标志码：A 文章编号：1005-8249（2026）02-0048-07DOI：10.19860/j.cnki.issn1005-8249.2026.02.008

Dynamic Mechanical Properties and Damage Model of Autoclaved Aerated Concrete

WANG Xiaobing¹， ZHANG Chuanda'，GAO Jian'， GAN Yuannan²， JI Yunfeng（1. Henan Luoning Pumped Storage Co.，Ltd.，Luoyang 4710OO，China;

2. China Anneng Group Second Engineering Bureau Co.， Ltd.， Nanchang 330096，China）

Abstract：Toinvestigatethedynamic mechanicalpropertiesanddamageconstitutivemodelofflyash-basedautoclavedaerated concrete（AAC），cylindrical specimens withvarying strength gradesanddrydensitieswere prepared.Axialcompresiontests wereconductedusingauniaxialcompresion testing machine atdiferentstrainrates.Theresults indicatethatthefailure modes of AC under various strainrates primarilyinvolvelongitudinal splitingandshearfailure.The mechanicalpropertiesofAACare closelyrelated tostrainrates：athigher strainrates，the peak stressincreases whilethepeak strain decreases，indicating enhanced material briteness.Additionally，theenergy dissipationcapacityofAAC improveswith increasing strainrates， demonstrating good energyabsorption characteristicsunder dynamic loading.Among the testedsamples，A5.OBO6 exhibited the highestenergydisipationcapacity，whileA3.5BO5showedthelowest.Thedamageconstitutivemodel basedon Weibul distributionefectively predictsthestress-trainrelationshipofAAC，withparticularlyhighagreement with experimentaldataat high strain rates.

Keywords：autoclavedaeratedconcrete；strainrate；mechanical properties；damageconstitutivemodel；Weibulldisribution

0 引言

随着建筑技术的不断发展，对建筑材料的综合性能要求越来越高，尤其是在抗震、节能和环保方面[1]。（剩余8544字）