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土体流变对工程长期性能的影响是一个不容忽视的因素,应力松弛作为一种典型的流变现象目前已经引起研究者的重视。从应力松弛试验的试验方法、影响因素及本构模型三个方面对土体应力松弛研究近况进行了分析讨论。现有文献表明,目前土体应力松弛理论发展尚未完善;模型理论参数较多,求解困难;经验模型,缺乏理论依据。因此,优化应力松弛分析方法,找到实用有效的分析方式;各类挡住结构上侧向应力的应力松弛规律研究,均为未来的重要研究方向。
The influence of soil rheology on the long-term performance of the project is a factor that can not be ignored. As a typical rheological phenomenon, stress relaxation has drawn the attention of researchers. From the stress relaxation test test methods, influencing factors and constitutive models of the three aspects of soil stress relaxation research and analysis of the status quo. The existing literature shows that the current theory of soil stress relaxation has not yet been developed; more theoretical models and difficult to solve; empirical model, lack of theoretical basis. Therefore, the optimization of stress relaxation analysis method to find a practical and effective analysis; various types of structures to block the lateral stress stress relaxation study, are important future research directions.