Dynamic mechanical properties of tetrahydrofuran hydrate-bearing silty clay sediments

IMECH-IR > 流固耦合系统力学重点实验室

	Dynamic mechanical properties of tetrahydrofuran hydrate-bearing silty clay sediments
	Sun FF(孙芳芳); Wang SY(王淑云); Zhang XH(张旭辉); 鲁晓兵 Lu X
会议录名称	Proceedings of the International Offshore and Polar Engineering Conference
	2019
页码	32-35
会议名称	29th International Ocean and Polar Engineering Conference, ISOPE 2019
会议日期	June 16, 2019 - June 21, 2019
会议地点	Honolulu, HI, United states
摘要	The dynamic mechanical properties of gas hydrate-bearing sediments (GHBS) are of great importance for the safety evaluation of gas hydrate stratum under the earthquake loading and the vibration during engineering activities. Previous research focuses on the static properties of GHBS before and after gas hydrate dissociation. In this paper, the dynamic tri-axial tests on unsaturated tetrahydrofuran hydrate-bearing silty clay sediments (THBS) are conducted under the frequency of 1.0 Hz, the effective confining pressure 1.0 MPa, and relative dynamic load amplitude (dynamic load amplitude/effective confining pressure) of 0– 0.6. When the relative dynamic load amplitude is lower than 0.5, the failure strength of THBS after the dynamic loading is greater than the static failure strength, and dynamic compaction and strengthen effect prevails. While when the relative dynamic load amplitude (DLA) exceeds 0.5, the failure effect dominates, reducing the shear strength of THBS greatly. The pore pressure and deformation develop slowly with the increase of the load time. © 2019 by the International Society of Offshore and Polar Engineers (ISOPE).
关键词	Deformation Dynamic load Failure strength Hydrate-bearing sediment Pore pressure
ISBN号	9781880653852
收录类别	EI
语种	英语
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/85103
专题	流固耦合系统力学重点实验室
作者单位	1.Institute of Mechanics, Chinese Academy of Sciences, Beijing, China 2.College of Engineering, University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Sun FF,Wang SY,Zhang XH,et al. Dynamic mechanical properties of tetrahydrofuran hydrate-bearing silty clay sediments[C]Proceedings of the International Offshore and Polar Engineering Conference,2019:32-35.