Undrained Responses of Partially Saturated Sand Induced by Biogas under Dynamic Cyclic Loading

doi:10.1520/JTE20190841

	Undrained Responses of Partially Saturated Sand Induced by Biogas under Dynamic Cyclic Loading
	Peng, Erxing 1; Sheng, Yu 1; Hu, Xiaoying 2; Zhang, Dingwen 3
	2021-01
发表期刊	JOURNAL OF TESTING AND EVALUATION
ISSN	0090-3973
卷号	49 期号:1 页码:15-27
摘要	Desaturation denotes a methodology used to mitigate sand liquefaction. Signifying a new form of material, biogas is deemed more feasible for the purpose of desaturation. The present study entailed the adoption of a microbial denitrification process for generating nitrogen gas to induce specimens that are partially saturated. These specimens were utilized for the consolidated undrained triaxial tests performed isotropically. Based on a simplified process concerning the evaluation of liquefaction, the study provided the crucial degree of saturation for determining its minimum degree for averting liquefaction under varying intensities of earthquake. According to test findings, the soils' liquification resistance grows with an increase in the saturation degree. The number of loading cycles used for initializing liquefaction increases to 34 cycles from 18 cycles under undrained asymmetricity as the extent of saturation reduces to 95.9 % from 100 % when the similarity of stress ratio is observed. Furthermore, the ratio of liquification resistance goes up in a linear pattern initially as the degree of saturation decreases. Meanwhile the ratio declines as the relationship becomes increasingly nonlinear. As a result, there is a gradual reduction in liquefaction resistance as the magnitude of earthquake rises, with a decline in the critical saturation degree. Notably, the extent of this decline is predicated on the relative density.
关键词	LIQUEFACTION RESPONSE EARTHQUAKE MITIGATION CARBONATE STRENGTH MODEL Biogas Earthquakes Supersaturation Consolidated-undrained triaxial test Critical saturation Degree of saturations Dynamic cyclic loading Evaluation of liquefactions Liquefaction resistance Microbial denitrification Partially saturated sands
DOI	10.1520/JTE20190841
收录类别	EI ; SCOPUS ; SCIE ; SCI
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Characterization & Testing
WOS记录号	WOS:000599154100002
出版者	AMER SOC TESTING MATERIALS
EI入藏号	20204009301825
EI主题词	Soil liquefaction
EI分类号	483.1 Soils and Soil Mechanics - 484 Seismology - 522 Gas Fuels - 801.4 Physical Chemistry
来源库	WOS
分类代码	483.1 Soils and Soil Mechanics - 484 Seismology - 522 Gas Fuels - 801.4 Physical Chemistry
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/147372
专题	兰州理工大学
通讯作者	Peng, Erxing
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Donggang W Rd 320, Lanzhou 730000, Gansu, Peoples R China; 2.Lanzhou Univ Technol, Sch Civil Egineering, 36 Pengjiaping Rd, Lanzhou 730050, Gansu, Peoples R China; 3.Southeast Univ, Sch Transportat, Nanjing 210096, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Peng, Erxing,Sheng, Yu,Hu, Xiaoying,et al. Undrained Responses of Partially Saturated Sand Induced by Biogas under Dynamic Cyclic Loading[J]. JOURNAL OF TESTING AND EVALUATION,2021,49(1):15-27.
APA	Peng, Erxing,Sheng, Yu,Hu, Xiaoying,&Zhang, Dingwen.(2021).Undrained Responses of Partially Saturated Sand Induced by Biogas under Dynamic Cyclic Loading.JOURNAL OF TESTING AND EVALUATION,49(1),15-27.
MLA	Peng, Erxing,et al."Undrained Responses of Partially Saturated Sand Induced by Biogas under Dynamic Cyclic Loading".JOURNAL OF TESTING AND EVALUATION 49.1(2021):15-27.