Undrained dynamic behaviour of peaty organic soil under long-term cyclic loading, Part II: Constitutive model and simulation

doi:10.1016/j.soildyn.2019.01.039

	Undrained dynamic behaviour of peaty organic soil under long-term cyclic loading, Part II: Constitutive model and simulation
	Chen, Cheng 2; Xua, Guofang 2; Zhou, Zhengming 2; Kong, Lingwei 2; Zhang, Xianwei 2; Yin, Song 1
刊名	SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
	2020-02-01
卷号	129 页码:10
关键词	Peaty organic soil Long-term cyclic loading Constitutive model Empirical equation Simulation
ISSN号	0267-7261
DOI	10.1016/j.soildyn.2019.01.039
英文摘要	Based on the experimental evidences presented in Part I, an empirical equation for the peaty organic soil is derived for calculating the accumulated plastic strain, in which the influencing factors such as the amplitude and number of cyclic loading, the cyclic static deviator stress and the static strength are considered. By regarding the accumulated plastic deformation under long-term cyclic loading as static creep, a constitutive model is presented. The modified Cam Clay model is incorporated in the proposed model to determine the initial stress condition which is necessary for subsequent calculation of accumulated plastic strain. Then, the proposed model is implemented in a finite-element formulation by using an implicit stress integration algorithm. Finally, this model is evaluated and validated through the applications to specific boundary value problems including element tests presented in Part I, a flexible shallow foundation subjected to long-term cyclic load and a road with a low embankment subjected to traffic load. The proposed methodology can be used to calibrate the design of dynamic machine foundation, road and others that involve long-term repetitive loading.
资助项目	National Natural Science Foundation of China[41402277] ; National Natural Science Foundation of China[11702304] ; State Key Development Program for Basic Research of China[2010BC732101]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000514014100044
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/23600]
专题	中科院武汉岩土力学所
通讯作者	Chen, Cheng
作者单位	1.Zhongyuan Univ Technol, Coll Architecture & Civil Engn, Zhengzhou 450007, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Chen, Cheng,Xua, Guofang,Zhou, Zhengming,et al. Undrained dynamic behaviour of peaty organic soil under long-term cyclic loading, Part II: Constitutive model and simulation[J]. SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,2020,129:10.
APA	Chen, Cheng,Xua, Guofang,Zhou, Zhengming,Kong, Lingwei,Zhang, Xianwei,&Yin, Song.(2020).Undrained dynamic behaviour of peaty organic soil under long-term cyclic loading, Part II: Constitutive model and simulation.SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,129,10.
MLA	Chen, Cheng,et al."Undrained dynamic behaviour of peaty organic soil under long-term cyclic loading, Part II: Constitutive model and simulation".SOIL DYNAMICS AND EARTHQUAKE ENGINEERING 129(2020):10.