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| Experimental study on dynamic characteristics of artificial ruins under
drying-wetting cycles |
| HU Zaiqiang，HUANG Shuai，ZHOU Hengli，SHE Jianwei，QIN Qiuxiang |
| (Institute of Geotechnical Engineering，Xi?an University of Technology，Xi?an，Shaanxi 710048，China) |
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Abstract In order to research the applicability of glutinous rice slurry for ancient ruins restoration under drying-wetting cycles，the ancient ruin samples with different contents of glutinous rice slurry were prepared by static pressing，the dynamic triaxial test was carried out after different times of drying and wetting cycles to obtain the dynamic characteristics and structural evolution law of the artificially prepared ruins. The results show that the dynamic strength of soil can be improved significantly and the dynamic deformation can be controlled effectively，When the mass ratio of soil to glutinous rice slurry is 90∶10，the backbone curve and dynamic shear modulus of the sample are the largest，and the damping ratio is the smallest. The drying-wetting cycles reduce the backbone curve and dynamic shear modulus of the artificially prepared site soil，and increases the damping ratio. With the increase of the content of glutinous rice slurry，the influence of drying-wetting cycles on the dynamic characteristics of soil gradually weakened. Dynamic shear modulus ratio and damping ratio tend to be stable after 5 cycles of wetting and drying，nonlinear regression analysis is performed on them respectively，and the corresponding normalized fitting model was established. The dynamic structural parameters defined by the comprehensive structural potential theory can well quantify the deterioration degree of soil structure in the drying-wetting cycles and shear process，The structural parameters decrease with the increase of drying-wetting cycles and confining pressure. When the content of glutinous rice slurry increases，the structural parameters first increase and then decrease.
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2022, Vol. 41 
