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Strain-Dependent Settlement Analyses of Heavily-Loaded Structures

机译:重载结构的应变相关沉降分析

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This paper describes the rationale behind using strain-dependent stiffness values for settlement analysis. Normalized elastic stiffness versus axial strain curves are presented for several soil types. Comparisons are made between the predicted settlement using (1) strain-dependent soil stiffness; and (2) single value high-strain soil stiffness for each layer beneath a major soil-supported structure using different soil profiles. Although the predicted settlement using strain-dependent soil stiffness is smaller in each case, the differences vary depending on various factors, including the level of loading (and hence strain) in the soil, and the ratio of low-strain to high-strain elastic modulus.
机译:本文介绍了使用应变相关的刚度值进行沉降分析的基本原理。给出了几种土壤类型的归一化弹性刚度与轴向应变的关系曲线。使用以下公式对预测沉降进行比较:(1)应变相关的土壤刚度; (2)使用不同土壤剖面的主要土壤支撑结构下每一层的单值高应变土壤刚度。尽管在每种情况下使用应变相关的土壤刚度预测沉降较小,但差异取决于各种因素,包括土壤中的荷载水平(以及应变),以及低应变与高应变弹性之比。模量。

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