芳纶纤维增强复合材料约束混凝土的动态压缩韧性试验研究

基金项目:

军队科研项目(KJYZ0920);空军工程大学研究生创新基金(KGCX11003)

STUDY ON DYNAMIC COMPRESSIVE TOUGHNESS OF AFRP CONFINED CONCRETE

1.
1. The Engineering Institute,Air Force Engineering University,Xi'an 710038,China;
2.
2. No.6 Project Office,Air Force Defense,Guangzhou 510000,China;
3.
3. Engieering Quality Surveillance Station,Air Force of Lanzhou Military Area,Xi'an 710000,China

摘要: 采用100分离式霍普金森压杆(SHPB)试验装置对芳纶纤维增强复合材料(AFRP)约束混凝土动态压缩韧性进行试验研究,选用峰值应变法与特征点法相结合的综合评价体系进行分析。结果表明,不同基体强度的AFRP约束混凝土动态压缩韧度随着应变率的增加而增大;AFRP的约束作用可以提高混凝土的动态峰值应变,明显改善混凝土的动态压缩韧性,提高混凝土的抗冲击性能。
- 动态压缩韧性 /
- AFRP约束混凝土 /
- SHPB /
- 峰值应变
Abstract: 100 mm Split Hopkinson pressure bar (SHPB) apparatus was applied to study the dynamic mechanical properties of AFRP(aramid fiber-reinforced plastic) confined concrete.The comprehensive evaluation system consisted of peak strain method and characteristics point method was selected to analyse the dynamic compressive toughness of AFRP concrete.It was found out that the dynamic compressive toughness of AFRP confined concrete made by different strength of concrete would increase with the increased strain rate; AFRP confined concrete could increase the dynamic peak strain; the confined effect could improve the dynamic compressive toughness of concrete obviously as well as to increase the antiimpact mechanical properties．
- dynamic compressive toughness /
- AFRP confined concrete /
- SHPB /
- peak strain