DEMONSTRATION EXPERIMENT ON HORIZONTAL REINFORCEMENT OF SOFT GROUND USING CROSS-LAMINATED TIMBER

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  • CLTの軟弱地盤水平補強の実証実験

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<p> Efforts are being made to use cross-laminated timber (CLT) in the civil engineering field, where there have been almost no previous examples. Against this backdrop, we considered the use of CLT as a countermeasure against soft ground. To investigate its feasibility, a demonstration experiment was conducted in which CLT was laid horizontally on actual soft ground to reinforce the soft ground and a full-scale embankment was constructed on top of the CLT. In this experiment, we investigated the workability and economic efficiency of the construction, differential settlement and stability, and soundness of the CLT after approximately 650 days. The effect of this countermeasure on differential settlement and stability was not clear, but the results showed that the CLT at least did not have a negative mechanical effect, and it had good trafficability, with no biodeterioration or mechanical deterioration. Therefore, this application of CLT was feasible, although verification of its cost and mechanics is an issue to be addressed in the next phase of this research.</p>

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