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土建工程设计中常常要求有能反映土的动力特性的各种参数(如动压缩模量E_d,动剪切模量G_d,动泊松比μ_d和阻尼比等),以及了解各种因素对这些参数的影响程度。其中振动频率f对动压缩模量E_d的影响至今仍是一个研究不多因而并不十分清楚的问题。本文介绍了有关频率对模量影响的一些资料,并着重从哈尔滨亚粘土的试验结果进一步加以分析讨论。一、E_d-f关系的若干资料简介振动频率f对动压缩模量E_d的影响可用自由振动、共振柱、振幅比值和应力应变等
Civil engineering design often requires various parameters (such as the dynamic compression modulus E_d, dynamic shear modulus G_d, dynamic Poisson’s ratio μ_d, damping ratio, etc.) that can reflect the dynamic characteristics of the soil, as well as understanding various factors for these The degree of influence of the parameter. The influence of the vibration frequency f on the dynamic compression modulus E_d is still a problem that has not been studied so much so that it is not very clear. This paper introduces some data on the effect of frequency on the modulus, and focuses on the analysis and discussion of the test results of Harbin subclay. I. Some data of the E_d-f relationship Introduction Vibration frequency f affects the dynamic modulus of compression E_d Free vibration, resonant column, amplitude ratio, stress strain, etc.