气候变化领域集成服务门户(CCPortal): An investigation on the constitutive response of frozen saline coarse sandy soil based on particle breakage and plastic shear mechanisms

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DOI	10.1016/j.coldregions.2018.12.011
	An investigation on the constitutive response of frozen saline coarse sandy soil based on particle breakage and plastic shear mechanisms
	Chang, Dan; Lai, Yuanming; Gao, Jianqiang
发表日期	2019
ISSN	0165-232X
EISSN	1872-7441
起始页码	94
结束页码	105
卷号	159
英文摘要	The particle breakage has significant influence on the mechanical properties of geomaterials during loading process. Considerable particle breakage commonly occurs for frozen sandy soils under relatively high pressure and large shear strain. A constitutive model for frozen saline coarse sandy soils was developed based on the breakage and plastic shear mechanisms. The particle breakage mechanism is derived from the breakage mechanics theory, which is based on thermodynamics principles. The plastic shear mechanism considers both strain hardening and softening properties. A non-associated flow rule is adopted to calculate the increments of relative breakage and plastic strains. The established model can reflect the influence of salt content on the constitutive response of frozen sandy soils. Parametric studies were further conducted to investigate the effects of model parameters on relative breakage and deformation behaviors. On the other hand, a series of triaxial tests under different stress paths were performed on frozen coarse sandy samples with different salt contents to calibrate the model parameters and to examine the performance of the proposed model. Comparisons between the calculated data and experimental results indicate that the established model can describe the particle breakage and deformation characteristics for frozen coarse sandy soils with various salt contents. The strain hardening/softening, high dilation and pressure melting features can be well captured.
英文关键词	Particle breakage; Frozen saline coarse sandy soil; Plastic shear mechanism; Incremental constitutive model
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
WOS关键词	CEMENTED GRANULAR-MATERIALS ; ELASTOPLASTIC MODEL ; SILTY SAND ; STRENGTH ; BEHAVIOR ; DEFORMATION ; FRAMEWORK ; ENERGY ; LOCALIZATION ; TEMPERATURE
WOS记录号	WOS:000458369700010
来源期刊	COLD REGIONS SCIENCE AND TECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239457
作者单位	[Chang, Dan; Lai, Yuanming; Gao, Jianqiang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Chang, Dan] Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China; [Lai, Yuanming; Gao, Jianqiang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chang, Dan,Lai, Yuanming,Gao, Jianqiang. An investigation on the constitutive response of frozen saline coarse sandy soil based on particle breakage and plastic shear mechanisms[J],2019,159.
APA	Chang, Dan,Lai, Yuanming,&Gao, Jianqiang.(2019).An investigation on the constitutive response of frozen saline coarse sandy soil based on particle breakage and plastic shear mechanisms.COLD REGIONS SCIENCE AND TECHNOLOGY,159.
MLA	Chang, Dan,et al."An investigation on the constitutive response of frozen saline coarse sandy soil based on particle breakage and plastic shear mechanisms".COLD REGIONS SCIENCE AND TECHNOLOGY 159(2019).