Influence of static pre-loading on the dynamic bending strength of concrete with particle element modeling

被引：0
作者：
MingXin Wu
ChuHan Zhang
机构：
[1] Tsinghua University,State Key Laboratory of Hydroscience and Engineering
来源：
Science China Technological Sciences | 2015年 / 58卷
关键词：
concrete; static pre-loading; dynamic bending strength; rate effect; particle element modeling;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Experimental tests show that static pre-loading has a significant effect on the dynamic strength of concrete. Based on meso-scale particle element model, numerical simulations of dynamic bending tests with pre-loading are performed. Complete stress-strain relationships are then obtained. Significant increase in dynamic strength is found when the pre-loadings are imposed within the elastic limit of concrete. However, when the imposition of pre-loadings reaches the plastic or softening range, dynamic strengths may gradually decrease along with the increase in pre-loadings. The distribution of energy components and the failure modes are discussed to explain the mechanisms of the phenomena.
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页码：284 / 296
页数：12
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