Abstract
A series of tests and studies were carried out on the parameters and effects of dynamic compaction (DC) for the deep and thick collapsible loess foundation under superhigh fill in the Lishi area, Shanxi Province, China. The test results indicate that a deep collapsible loess foundation can be effectively improved utilizing DC; moreover, loess collapse is significantly eliminated within the improvement range, and the effective improvement depth can be well estimated exploiting the modified Menard formula. Additionally, after the energy level of DC exceeds 2000 kN ∙ m, the characteristic value of bearing capacity of collapsible loess foundations can surpass 300 kPa, and the deformation modulus is beyond 25 MPa. The numerical model established by ABAQUS is reliable and can provide some guidance on the design and construction of similar engineering projects.
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Funding
This study was financially supported by the National Natural Science Foundation of China (No. 51408463) and the Key Research and Development Project in Shaanxi Province (No. 2020SF-373; No. 2021SF-523).
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Mei, Y., Zhang, S., Hu, C. et al. Field test study on dynamic compaction in treatment of a deep collapsible loess foundation. Bull Eng Geol Environ 80, 8059–8073 (2021). https://doi.org/10.1007/s10064-021-02343-x
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DOI: https://doi.org/10.1007/s10064-021-02343-x