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该文依托西安市洪庆河洪积扇某自重湿陷性黄土场地现场试坑浸水试验成果,对洪庆河洪积扇的黄土场地湿陷性变形特征及各主要地层的修正系数β0进行了分析,认为在有条件的情况下,不同沉积年代的黄土地层中应根据地区土质差异而采用不同的修正系数,而不是规范规定的统一的修正系数,才能更符合黄土自重湿陷变形的实际情况。
This paper relies on the test results of in-situ pit immersion test in Hongqinghe alluvial fan in Xi’an, and analyzes the collapsible deformation characteristics of loess ground and the correction coefficient β0 of the main strata in Hongqinghe alluvial fan. When conditions are right, different correction factors should be adopted in loess strata of different deposition ages according to the difference of soil quality in different sedimentation age, instead of the unified correction coefficient stipulated in the code, so as to be more in line with the actual situation of loosening and deformation of loess self weight.