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在大量动三轴试验的基础上,深入研究了石灰土填料的动力特性试验结果表明:动应变ε_d是影响土样动弹模量及阻尼比的最主要因素,随着动应变水平的提高,动弹模量E_d成倍减小而阻尼比λ成倍增大.随着掺灰比的增大,石灰土的动弹模量和阻尼比相应增大,动弹模量随围压σ_3增减而增减,阻尼比λ随围压σ_3的增加而减小.最大动弹模量E_(dmax)与围压σ_3呈指数递增关系;最大阻尼比λ_(max)在7%~40%之间,与围压σ_3呈指数递减关系,并建立了相应的经验公式.图10,表4,参14.
On the basis of a large number of dynamic triaxial tests, the dynamic characteristics of the limestone filler are studied in depth. The results show that the dynamic strain ε d is the most important factor affecting the modulus and damping ratio of soil samples. As the level of dynamic strain increases, The modulus E_d decreases multiple and the damping ratio λ multiplies. With the increase of ash mixing ratio, the dynamic modulus and damping ratio of lime soil increase correspondingly, and the dynamic modulus increases or decreases with the increase or decrease of confining pressure σ_3. The damping ratio λ decreases with the increase of confining pressure σ_3. The maximum dynamic modulus E_ (dmax) and the confining pressure σ_3 are exponentially increasing. The maximum damping ratio λ_max is between 7% and 40%, exponentially decreasing with the confining pressure σ_3, and the corresponding empirical formula is established. Figure 10, Table 4, reference 14.