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以河南某地灰粘土的室内流变试验的试验结果为例,介绍了利用土体的流变曲线确定其流变本构模型和模型参数的过程;对土体的粘弹塑性流变问题进行了有限元分析;编制了考虑土的流变特性的深基坑支护桩有限元计算程序,进行了实例计算,对计算结果进行了分析,并与实测值进行了对比;结果表明,实测值与考虑流变时的理论计算值比较吻合。
Taking the indoor rheological test of gray clay in a certain place in Henan as an example, the process of using rheological curve of soil to determine its rheological constitutive model and model parameters is introduced. The viscoelasto-plastic rheological problem of soil is carried out The finite element analysis program of the deep foundation pit supporting pile considering the rheological characteristics of soil was developed and the calculation examples were given. The calculation results were analyzed and compared with the measured values. The results showed that the measured values It is in good agreement with the theoretical calculation when considering rheology.