Creep properties of geopolymer cemented coal gangue-fly ash backfill under dynamic disturbance
Creep properties of geopolymer cemented coal gangue-fly ash backfill under dynamic disturbance
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动态扰动下地质聚合物胶结煤矸石粉煤灰充填材料的蠕变特性
DOI：
10.1016/j.conbuildmat.2018.10.055
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发表时间：
2018-12
影响因子：
7.4
通讯作者：
夏亚杰
中科院分区：
文献类型：
--
作者：
孙琦;李兵;田硕;蔡畅;夏亚杰
为了测试地聚合物胶结煤矸石-粉煤灰充填体的蠕变扰动效应，探索地聚合物胶结煤矸石-粉煤灰充填体的蠕变扰动规律，研制了地聚合物胶结煤矸石-粉煤灰充填体蠕变扰动试验机。通过引入扰动单元，将改进的分数阶Burger模型和非线性粘性阻尼器与应变触发器连接起来，建立了GCGFB的蠕变扰动本构模型。实验结果表明，动态扰动对GCGFB的蠕变过程有显著影响。增加扰动冲击能量会增加变形量，缩短达到破坏应变的时间。GCGFB产生的扰动变形在低扰动能量下与静载应力呈负相关，在高扰动能量下与静载应力呈正相关。扰动本构模型的计算结果与实验数据吻合较好。
A testing machine was developed to test the creep disturbance effect and explore the creep disturbance law of geopolymer cemented coal gangue-fly ash backfill (GCGFB). A creep disturbance constitutive model of GCGFB was established by introducing a disturbance element that connects an improved fractional Burger’s model and nonlinear viscous dashpot with a strain trigger. Experimental results indicated that dynamic disturbances significantly influence the creep process of GCGFB. Increasing the disturbance impact energy increases the deformation and shortens the time to reach the failure strain. The disturbance deformation generated by GCGFB is negatively correlated with the static load stress at a low disturbance energy and positively correlated at a high disturbance energy. The calculated results of the disturbance constitutive model showed good agreement with the experimental data.
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影响因子：
7.4
作者：
Di Wu;T. Deng;Runkang Zhao
通讯作者：
Di Wu;T. Deng;Runkang Zhao
DOI：
--
发表时间：
2008
期刊：
Chinese journal of rock mechanics and engineering
影响因子：
--
作者：
Zhang Yan-ping
通讯作者：
Zhang Yan-ping
影响因子：
7.4
作者：
Ouattara, Drissa;Belem, Tikou;Yahia, Ammar
通讯作者：
Yahia, Ammar
DOI：
--
发表时间：
2011
期刊：
Chinese journal of rock mechanics and engineering
影响因子：
--
作者：
Cui Xihai
通讯作者：
Cui Xihai
胶结膏体充填体孔隙特征与无侧限抗压强度关系试验研究
影响因子：
7.4
作者：
Liu, Lang;Fang, Zhiyu;Song, Ki-Il
通讯作者：
Song, Ki-Il