Dynamic Numerical Analysis of Large Block Bases on Different Pile Foundations
In order to reasonably predict the dynamic characteristics of the large block base on pile foundation,a pile foundation simulation model is established and verified by the pile-soil dynamic test.The composite pile foundation model and the large block base model are used for finite element numerical analysis with the use of spring element to simulate the pile foundation.The model is analyzed and the impact of different pile foundation simulation methods on the dynamic characteristics of the large block base is discussed.The results show that the method of using spring element to simulate pile foundation neglects the effect of pile and soil mass and damping,which will make the vibration mode of the large block base missing,the overall natural frequency larger,and the forced vibration response be amplified;While the pile foundation simulation model can reasonably reflect the dynamic characteristics of the large block base,but the calculation cost increases.The above conclusions may provide a reference for the study of dynamic characteristics of large block bases on pile foundations.
vibration and wavelarge block basepile foundation simulation modelfinite element analysisforced vibration responsespring element
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