土-结构物接触面统计损伤本构模型

Research on Statistical Damage Model for Soil-structure Interface

结合连续强度理论和统计理论,从接触面内部缺陷分布的随机性出发,首次建立了土与结构物接触面的统计损伤本构模型。该模型能反映接触面的应力应变特性,具有参数少、概念明确及应用简便的特点。对接触面厚度的分析表明,指出存在临界厚度,而且接触面厚度的大小与应力峰值点无关。与试验结果的比较表明,文中建议模型合理,具有工程实用价值。

Based on random distribution of interior defeet, a damage constitutive model for soft-structure interface is developed by using the continuous intension and statistical theory herein. The model can aimulate the stress-strain behavior of soft-structure interface .The presented damage model, requiring limited number of parameters, has a clarified physical meaning and can be adopted conveniently. Analysis of the interface＇s thickness indicates that there exists a critical thickness and the magnitudes of the interface＇s thickness are independent of the peak stress. The well agreement between the test results and the proposed model shows that the model is reasonable and practical.