Abstract
Based on the vacuum preloading combined electro-osmotic consolidation method, a site comparison trial of vacuum preloading and vacuum preloading in combination with electro-osmotic consolidation was performed on Li Island, Hubei Province. The performance and drainage effects of electric vertical drains were evaluated. The problems were analyzed by monitoring test results. Test results from the field showed that the water content of the dredger fill was greatly reduced and the physico-mechanical properties and bearing capacity were improved significantly after 28 days of treatment by vacuum preloading in combination with electro-osmotic consolidation. Compared with the vacuum preloading method, vacuum preloading in combination with the electro-osmotic consolidation method using electric vertical drains reduced the construction time, saved energy, and achieved an ideal reinforcement effect.
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