吉林地区草炭土物理力学指标相关性试验研究

Experiment and Research on Correlation of Phisical Mechanics Indexes of Turfy Soil in Jilin Area

通过大量土工试验,对鹤(岗)-大(连)公路路基草炭土密度、含水量与天然孔隙比及压缩系数进行相关性研究。发现草炭土密度与天然含水量存在较好的幂函数关系;密度与天然孔隙比及压缩系数存在较好的指数函数关系;含水量与天然孔隙比及压缩系数均存在很好的指数关系。通过对比发现,各参数之间的相关关系与理论公式吻合程度较好。比较吉林省其他地区草炭土物理力学指标的相关关系,均与鹤大草炭土显示出很好的相似性。结果表明:本文所建立的草炭土密度、含水量分别与天然孔隙比、压缩系数的相关关系,可以为吉林地区草炭土地基参数计算及预测提供重要参考。

Through large numbers of geotechnical tests,the correlativity between density, water content,natural void ratio and compressive coefficient on the roadbed of Hegang to Dalian Highway are studied. It is found that,there is a rational power function relation between density and natural water. There are also rational exponential relations not only between density and ignition loss but between density and compressive coefficient. In addition, there are fairly good exponential relations not only between water con- tent and natural void ratio but also between water content and compressive coefficient. It is found by comparing that the result is complete inosculate between the parameters of the correlation and the theoretical formula. There are better comparability between other areas of Jilin Province turfy soil physical and mechanical indexes related to the relationship with the He-Da trufy soil. It is indicated in the result that the relations-desity of Turfy Soil and natural void ratio, desity and compression coefficient, water content and natural void ratio, as well as water content and compresstion coeffient provide significent references for prediction and parameter calculation of Turfy Soil ground base in Jilin area.