土石混合填料工程力学性能试验研究.

The mechanical properties of soil rock mixture are important parameters affecting the design and construction ofembankment. Therefore, the related research has always been a hot topic. To analyze the mechanical properties of soil rockmixture under different moisture content, soil rock mixing ratio, compaction work and soil material thickness conditions,compaction tests and large -scale direct shear tests were conducted on soil rock mixture under different combinations. Theinfluence of the above factors on the optimal water content and mechanical index of the mixture was revealed, andacalculationmethod for the mechanical indicators of soil rock mixture was established. The research shows that the total compaction work,moisture content, and stone content have a significant impact on the dry density of the sample. As the stone content increases,the maximum dry density of the soil rock mixture gradually increases but the optimal moisture content gradually decreases. Thedry density increases with the increase of compaction times per layer. As the normal stress increases, the stress-strain curve ofsoil rock mixture gradually changes from strain hardening type to strain softening type. As the stone content increases, theinternal friction angle decreases but the cohesion increases slightly. The results can provide theoretical reference for theconstruction and design of the embankment with soil rock mixture. [ABSTRACT FROM AUTHOR]