地震作用下软粘土地基的变形计算

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摘要:: 本文探讨了软粘土的振动弱化特性以及动模量、累积偏应变、阻尼比与振动弱化参数之间的关系，并将累积偏应变、动模量的振动弱化关系用于软粘土地基的动变形（震陷）计算。用该方法对一实际工程的软粘土地基在地震作用下的动变形进行了计算，计算结果与实测的震陷值基本吻合。
This paper inquires into the softening properties of soft clay and into the relationship between the dynamic modulus, the accumulated deviation strain, the damping ratio and the softening parameters. The relationship between the accumulated deviation strain and the vibration of dynamic modulus is used to calculate the dynamic deformation (sinking caused by earthquake) of soft clay foundation. This method is used to calculate the dynamic deformation of soft clay foundation of a practical project under the effect of earthquake. The calculated result is quite close to the practical test value of the sink caused by earthquake.

1995,4(4): 36-39 收稿日期：1995-3-16

分类号：TU433

基金项目：国家自然科学基金

参考文献：
1 王建华, 要明伦.饱和软粘土抗弱化特性的研究.水利学报,1993:(12)
2 石兆吉, 丰万玲.砖房震陷计算分析.地震工程与工程振动,1991(1)