动载作用下饱和土壤液化的研究述评
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摘要
从土壤液化的机理、影响因素、液化的判别、液化的分析方法以及液化后土壤的性质等方面详述了动载(地震荷载和爆炸荷载)作用下的饱和土壤液化的国内外研究成果(主要是近十年的研究),并对其作出了述评。最后,对今后土壤液化的研究工作作出了展望,认为以下问题需要开展深入研究:⑴液化分析中的土骨架的动力本构模型;⑵Rayle igh波对地震液化的影响;⑶建构物的存在对液化的影响;⑷液化后土的性质和液化引起的建构物破坏;⑸尤其爆炸液化问题。
In this paper,the state-of-the-art of studies on the liquefaction of saturated soils are reviewed,including the mechanism of the soil liquefaction,the influential factors of the seismically induced soil liquefaction,the approach of estimating and analyzing the seismic hazard of the soil liquefaction,and the characters of the post-liquefaction soils.Some works on the soil liquefaction induced by blasting are also introduced.Then,after analyzed these works,some intending research works are proposed,such as the dynamic constitutive relation of the soil skeleton,the effect of the Rayleigh wave to liquefaction,the influence of the structure-soil interaction on liquefaction,the character of the post-liquefaction soils,the building settlements due to liquefaction and blasting-induced liquefaction,and so on.
In this paper,the state-of-the-art of studies on the liquefaction of saturated soils are reviewed,including the mechanism of the soil liquefaction,the influential factors of the seismically induced soil liquefaction,the approach of estimating and analyzing the seismic hazard of the soil liquefaction,and the characters of the post-liquefaction soils.Some works on the soil liquefaction induced by blasting are also introduced.Then,after analyzed these works,some intending research works are proposed,such as the dynamic constitutive relation of the soil skeleton,the effect of the Rayleigh wave to liquefaction,the influence of the structure-soil interaction on liquefaction,the character of the post-liquefaction soils,the building settlements due to liquefaction and blasting-induced liquefaction,and so on.
引文
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