Review of Dynamic Behaviors and Constitutive Model of Soil Under Long-Term Cyclic Loading
With the rapid development of transport infrastructure,the dynamic properties of soil under long-term cyclic loading and the corresponding constitutive model system are receiving increased attention,which can provide a theoretical basis and technical support for the assessment of the dynamic stability and service performance of foundations or geotechnical structures under such loading.In the past 20 years,Chinese and foreign scholars have carried out a large number of indoor experiments to explore the dynamic behaviors and influencing factors of soil under long-term cyclic loading,established corresponding theoretical models to describe the characteristics of long-term cyclic deformation of soil,and applied them to engineering practice.At present,the research on dynamic performance and the main influencing factors of soil under long-term cyclic loading is sufficient.However,how to reduce the parameters of these constitutive models and enhance their applicability in complex working conditions with variable amplitudes and frequencies needs to be further studied.Through the summary of research development,this paper clarified the development direction of this topic and proposed some possible solutions to the current research limitations,which was beneficial for applying research findings in engineering practice.
long-term cyclic loadingloading modesaccumulative straindynamic modulusconstitutive model