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    题名 作者 年代 出处 被引量
1基于状态参数的筑坝粗粒土本构模型显示文摘粗粒土的应力应变关系与其密实度有着密切的关系。当前常用的粗粒土本构模型无法考虑密实度对其力学行为的影响,在粗粒土三轴试验基础上建议了一个基于状态参数的粗粒土双屈服面模型,推导了其应力应变表达式。该模型能够反映不同初始孔隙比条件下粗粒土的峰值强度、剪胀性、应变硬化或软化规律。通过与多组粗粒土三轴试验结果比较,验证了模型的适应性。魏匡民 陈生水 李国英 傅中志 2016岩土工程学报2016,38,4:15
2A generalized plasticity model for the stress-strain and creep behavior of rockfill materials显示文摘The generalized plasticity constitutive equations that simulate, in a unified manner, the stress-strain response and the creep behavior of rockfill materials are derived using the concept of elastoplasticity. A single yield surface is assumed to capture the onset of plastic strains with, however, two separate potential functions for the stress-induced plastic strains and the creep strains,respectively. The involved tensors and scalars are then specified directly, following the generalized plasticity method, to substantiate the constitutive equations. The model thus obtained is verified using triaxial compression experiments, true triaxial experiments and triaxial creep experiments. The effectiveness of the model is also demonstrated by a successful application in studying the behavior of a high concrete face rockfill dam(CFRD). It is found that for a high CFRD with a long construction period, neglecting the creep of rockfill materials during construction results in an underestimation of the deformation of the dam.The deformation and stress of the concrete slabs may also be considerably underestimated.FU ZhongZhi CHEN ShengShui WEI KuangMin 2019Science China(Technological Sciences)2019,62,4:5
3Editorial显示文摘Jianguo Wang 2012Frontiers of Architectural Research2012,1,1:2
4Development of a constitutive model for rockfills and similar granular materials based on the disturbed state concept显示文摘Behavior of rockfills was investigated experimentally and theoretically.A series of standard triaxial compression tests were carried out on a quarried rockfill material at different stress levels.It was found that both the stress level and the shear stress ratio,like most of granular materials,controls the behavior of rockfill materials.At lower shear stress ratios the behavior is much more similar to a nonlinear elastic solid.When the shear stress goes further,the stressstrain curve shows an elasto-plastic behavior which suggests using the disturbed state concept to develop a constitutive model to predict the stress-strain behavior.The presented constitutive model complies reasonably with the experimental data.Mehdi VEISKARAMI Ali GHORBANI Mohammadreza ALAVIPOUR 2012Frontiers of Structural and Civil Engineering2012,6,4:1
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