Abstract
This investigation was conducted on reconstituted clay with prefabricated vertical drains to assess the performance of solar energy-based thermal consolidation. Variations in temperature, excess pore water pressure and surface settlement under ambient temperatures and solar heating conditions were observed by two loading methods, multistage loading and vacuum preloading. A theoretical calculation of the coupling impact of multistage loading and solar heating was performed. And the economic cost was analyzed for practical engineering application. It was found that solar heating contributes to sinusoidal variations in soil pore water pressure and settlement rate, with the former rising during the day and dissipating at night and the latter increasing at night and decreasing during the day. The cost of foundation treatment increases by 5.66% when using solar heating method, but it will be close to the cost of traditional vacuum preloading as time costs rise.
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