Dynamic behaviour of weathered red mudstone in Sichuan (China) under triaxial cyclic loading
文献类型：期刊论文
| 作者 | Zhang Chong-lei1,2 ; Jiang Guan-lu2; Su Li-jun1,3,4; Liu Wei-ming1
|
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2018-08-01 |
| 卷号 | 15期号:8页码:1789-1806 |
| ISSN号 | 1672-6316 |
| 关键词 | Cyclic triaxial tests Cyclic stress ratio Red mudstone Critical dynamic stress Cumulative strain Railway subgrade |
| DOI | 10.1007/s11629-017-4756-6 |
| 英文摘要 | The construction of a high-speed railway (HSR) in Southwest China is being hindered by a severe shortage of high-quality subgrade materials. However, red mudstone is widely distributed in the Sichuan Basin of China. The ability to use weathered red mudstone (WRM) to fill subgrade beds by controlling its critical stress and cumulative strain would enable substantial savings in project investments and mitigate damage to the ecological environment. To better understand the dynamic behaviour of WRM, both monotonic and cyclic triaxial tests were performed. The evolution of the cumulative strain vs. increased loading cycles was measured. The influences of confining pressure and loading cycles on the dynamic modulus, damping ratio, critical cyclic stress ratio (CSR), and dynamic stress level (DSL) were investigated. The relationship between the CSR and loading cycles under different failure strain criteria (0.1%-1.0%) was analysed. The prediction model of cumulative strain was also evaluated. The results indicated that the shear strength of WRM sufficiently meets the static strength requirements of subgrade. The critical dynamic stress of WRM can thus satisfy the dynamic stress-bearing requirement of the HSR subgrade. The critical CSR decreases and displays a power function with increasing confining pressure. As the confining pressure increases, the DSL remains relatively stable, ranging between 0.153 and 0.163. Furthermore, the relationship between the dynamic strength and loading cycles required to cause failure was established. Finally, a newly developed model for determining cumulative strain was established. A prediction exercise showed that the model is in good agreement with the experimental data. |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000442239600013 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/23753]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 通讯作者 | Su Li-jun |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 2.Southwest Jiaotong Univ, Sch Civil Engn, Key Lab High Speed Railway Engn, Minist Educ, Chengdu 610031, Sichuan, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Chong-lei,Jiang Guan-lu,Su Li-jun,et al. Dynamic behaviour of weathered red mudstone in Sichuan (China) under triaxial cyclic loading[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(8):1789-1806. |
| APA | Zhang Chong-lei,Jiang Guan-lu,Su Li-jun,&Liu Wei-ming.(2018).Dynamic behaviour of weathered red mudstone in Sichuan (China) under triaxial cyclic loading.JOURNAL OF MOUNTAIN SCIENCE,15(8),1789-1806. |
| MLA | Zhang Chong-lei,et al."Dynamic behaviour of weathered red mudstone in Sichuan (China) under triaxial cyclic loading".JOURNAL OF MOUNTAIN SCIENCE 15.8(2018):1789-1806. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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