Dynamic Properties of Carbon-Fiber-Reinforced Clay Soil
Dynamic Properties of Carbon-Fiber-Reinforced Clay Soil
复制标题
碳纤维增强粘土的动力特性
DOI：
10.1007/s11204-018-9543-z
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发表时间：
2018-10
影响因子：
0.8
通讯作者：
Yu Xiangjuan
中科院分区：
文献类型：
--
作者：
Gao Lei;Hu Guohui;Chen Jiaru;Ren Keyi;Zhou Qiuyue;Yu Xiangjuan
为了研究碳纤维增强土的动力特性，将碳纤维均匀分散到粘土中。在等土干密度条件下，进行了一系列的共振柱试验。研究了纤维含量为0%、0.05%、0.10%和0.15%，含水量为12%、16%和20%的样品。采用扫描电子显微镜对碳纤维增强粘土进行了微观观察。结果表明：随着土壤含水量的降低，最大动剪切模量增大，阻尼比减小；随着纤维掺量的增加，最大动剪切模量先增大后减小；碳纤维的最佳掺量为0.10%。阻尼比随土壤纤维含量的增加而增大。扫描电镜分析显示两种强化机制：摩擦效应和限制侧向变形。研究结果表明，碳纤维有利于振动能量的耗散。
To study the dynamic characteristics of carbon-fiber-reinforced soil, carbon fiber was uniformly dispersed into clay soil. A series of resonant column tests was carried out at constant soil dry density. Samples prepared with fiber contents of 0%, 0.05%, 0.10% and 0.15% and water contents of 12%, 16% and 20% were studied. Scanning electron microscopy was used to examine the carbon-fiber-reinforced clay soil at the microscopic level. The results show that the maximum dynamic shear modulus increases and the damping ratio decreases with decreasing soil water content. With increasing fiber content, the maximum dynamic shear modulus increases at first and then decreases; the optimal carbon fiber content was 0.10%. The damping ratio increases with increasing soil fiber content. Scanning electron microscopy analysis indicated two reinforcement mechanisms: friction effect and limiting lateral deformation. Results of this study indicate that carbon fiber is conducive to the dissipation of vibration energy.
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