Study of the strength characteristics of dredger fill under the combined action of impact load and drainage

doi:10.1080/19648189.2021.1927196

	Study of the strength characteristics of dredger fill under the combined action of impact load and drainage
	Yang, Aiwu 1,2; Liang, Zhenzhen 2; Xu, Guofang 3; Wu, Lei 1
刊名	EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
	2021-05-07
页码	15
关键词	Dredger fill impact load pore complexity microstructure SEM
ISSN号	1964-8189
DOI	10.1080/19648189.2021.1927196
英文摘要	This paper studied the strength growth characteristics of Tianjin Binhai dredger fill, considering the impact load, drainage condition, and loading way of the impact. Based on UU and scanning electron microscope tests, the strength growth mechanism of the dredger fill was studied from both macroscopic and microscopic perspectives. The results showed that there an optimal impact load under the combined action of impact load and drainage, which can enhance the strength of the dredger fill to the maximum extent, its value is close to the structural yield stress. Furthermore, the methods of 'more impact rounds and fewer impact counts' and 'first light then heavy' can obtain the best effect of foundation reinforcement. Microstructural analysis showed that, with the increase in impact loads, the pore complexity and the number of pores increased, while the porosity, the number of soil particles, the pore circumference, and the total pore area decreased. This research also showed that the increase in the strength of dredger fill was mainly reflected by the increase in the internal friction angle under the combined actions of impact load and drainage, while the change of cohesion was rather small. The mathematical relationship between the internal friction angle and the pore characteristic can be expressed by a unary function, which increases with increasing pore complexity.
资助项目	National Natural Science Foundation of China[51978440] ; CAS Pioneer Hundred Talents Program[2018-040] ; Natural Science Foundation of Tianjin[19JCZDJC39700] ; Fundamental Research Funds for the Central Universities[2232021A-07]
WOS研究方向	Engineering
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000652130500001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/27163]
专题	中科院武汉岩土力学所
通讯作者	Xu, Guofang
作者单位	1.Tianjin Chengjian Univ, Key Lab Soft Soil Characterist & Engn Environm Ti, Tianjin, Peoples R China 2.Donghua Univ, Sch Environm Sci & Engn, Shanghai, Peoples R China 3.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	Yang, Aiwu,Liang, Zhenzhen,Xu, Guofang,et al. Study of the strength characteristics of dredger fill under the combined action of impact load and drainage[J]. EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,2021:15.
APA	Yang, Aiwu,Liang, Zhenzhen,Xu, Guofang,&Wu, Lei.(2021).Study of the strength characteristics of dredger fill under the combined action of impact load and drainage.EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,15.
MLA	Yang, Aiwu,et al."Study of the strength characteristics of dredger fill under the combined action of impact load and drainage".EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING (2021):15.