Abstract
Due to the wet-dry cycle, the consolidation creep characteristics of the weathered red sandstone coarse-grained soil have a great influence. Firstly, through the one-dimensional consolidation creep test, the strain and consolidation time curves \(\varepsilon { - }t\) were obtained under the wet and dry cycles conditions, and the consolidation creep hyperbolic model of weathered red sandstone coarse-grained soil was established. Then, regression equations between initial consolidation creep rate, limit consolidation creep rate, and consolidation creep rate and the wet-dry cycle times and consolidation pressure were established, and the effect of the dry and wet effect on the consolidation creep behavior of weathered red sandstone coarse-grained soil was analyzed. Finally, the normalization equation was established, and the effects of the number of dry and wet cycles and the consolidation pressure on the consolidation creep characteristics of the rough-grained soil of weathered red sandstone were analyzed. The main conclusions are as follows: (1)The test curve that consolidation creep test curve \(\varepsilon { - }t\) of weathered red sandstone coarse-grained soil is approximately hyperbolic. (2)Under the action of a certain consolidation pressure, when the number of the wet and dry cycles is six as the critical point, the initial consolidation creep rate \(\dot{\varepsilon }_{0}\) changes differently. (3)The critical creep concept is proposed through the \(\varepsilon { - }\lg t\) curve, the regression equation between the consolidation creep rate and the consolidation creep and the consolidation pressure is established, and the limit consolidation creep is used as the normalization factor, and the normalization equation of the consolidation creep of the weathered red sandstone coarse-grained soil under dry and wet cycle conditions is established.
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The work is supported by the National Special Program for International Scientific and Technology Cooperation (Grant Nos.2014DFA53120)
International Science and Technology Cooperation Programme
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Wen, CP., Yuan, XQ. Hyperbolic Consolidation Creep Model of Weathered Red Sandstone Coarse-Grained Soil Under the Wet and Dry Cycles Conditions. Geotech Geol Eng 40, 5103–5113 (2022). https://doi.org/10.1007/s10706-022-02202-w
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DOI: https://doi.org/10.1007/s10706-022-02202-w