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地震荷载作用下软土的变形特性及震陷量的估算问题,是目前国内外十分关注的课题。本文在对厦门石湖山和筼筜港地区淤泥土进行动强度和变形特性研究的基础上,对淤泥土的震陷量估计问题作了简化计算的探讨。我们在前人工作的基础上,对缺乏地震记录资料和经济条件不允许的地区和工程项目,利用类似H.B.Seed简化计算动剪应力的方法,结合地震荷载作用下变形特性规律和试验参数,提出了预估软土震陷量的简化计算方法。研究结果表明,这种简化计算法与谢君斐、石兆吉等专家提出的“软化模型法”的计算结果很接近,这对工程地质工作者如何能经济而又简便地预估地震可能引起的危害,将起到一定地积极作用。
The problem of deformation characteristics and seismic trapping of soft clay under seismic loading is a topic of great concern at home and abroad. Based on the study of dynamic strength and deformation characteristics of silt in Shihushan and Lugang areas of Xiamen, this paper discusses the simplified calculation of the problem of seismic settlement of silt. On the basis of previous work, we used a method similar to HBSeed to simplify calculation of dynamic shear stress in areas and projects where seismic records and economic conditions are not allowed, combined with deformation characteristics and test parameters under seismic load. A simplified calculation method for estimating the amount of seismic collapse in soft soils. The results of the study indicate that this simplified calculation method is very close to the calculation results of the “softening model method” proposed by experts such as Xie Junfei and Shi Zhaoji. This is how the engineering geologists can economically and easily estimate the possible harm caused by the earthquake. Play a positive role.