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本文根据Singh和Mitchell等学者的研究结果,采用适用范围广的Singh_Mitchell蠕变速率方程描述常州地区第一弱透水层粉质粘土的蠕变特性。利用自制改装的三轴应力式流变仪,通过三轴排水蠕变试验,分析得出常州地区粉质粘土的蠕变模型形式,较不排水蠕变试验更加客观地反映了常州地区第一弱透水层长期蠕变的实际情况,从而为该区地面沉降模型中考虑粘性土体的蠕变特性提供了力学基础,并提供相应的参考数据。该模型具有参数少、适用性强的特点。
Based on the results of Singh and Mitchell et al., This paper describes the creep behavior of the first weak aquitard silty clay in Changzhou using a wide range of Singh_Mitchell creep rate equations. The creep model of silty clay in Changzhou area was obtained through triaxial displacement creep test by self-made triaxial stress rheometer. Compared with the undrained creep test, the creep model in Changzhou area is more objectively reflecting the first weakness in Changzhou So as to provide a mechanics basis for considering the creep characteristics of cohesive soils in the land subsidence model of this area and to provide corresponding reference data. The model has the characteristics of less parameters and strong applicability.