平面应变条件下结构性黄土本构模型试验研究

doi:10.13722/j.cnki.jrme.2017.0595

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Abstract 黄土在我国分布广泛，且大多都具有显著的结构性，黄土工程中又有许多平面应变问题，深入研究平面应变条件下结构性黄土的本构关系在理论研究及黄土工程应用中显得尤为重要。为了更合理地描述平面应变条件下结构性黄土的应力–应变关系，基于临界状态土力学理论，提出一个能够反映平面应变条件的结构性黄土本构模型。在模型建立过程中，引入结构屈服压力，依据平面应变试验结果直接确定固定屈服面和加载屈服面，并验证选取塑性体应变为硬化参量的合理性，使本构模型更符合工程中土体的实际受力过程。模型中各参数物理意义明确，可由等向压缩试验和平面应变剪切试验求得，通过试验曲线与模型计算曲线的对比可知，所建立的本构模型可以较合理地描述平面应变条件下结构性黄土加载条件下的强度、变形特性，具有很好的应用前景。

Key words：土力学黄土平面应变试验临界状态理论屈服面本构模型

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	Articles by authors
	ZHANG Yu1
	SHAO Shengjun2
	ZHAO Min1
	DING Xiao1
	LIAGN Xinyu1
	ZHANG Shaojun1

Cite this article:

ZHANG Yu1,SHAO Shengjun2,ZHAO Min1, et al. Experimental study on constitutive models of structural loess under plane strain conditions[J]. , 2018, 37(2): 485-496.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.0595 OR https://rockmech.whrsm.ac.cn/EN/Y2018/V37/I2/485

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