Recently, there are few construction works in vacant lot. Many construction works take place after demolishing the existing building. In such case, reuse of the existing piles is reasonable. We need a way to verify the performance of the existing piles for reuse. Therefore, in this paper, we proposed a simple method for estimating the static elastic pile-head spring using the impulse response excited by human power. We also proposed a simple method to simulate the impulse response of the pile-head.
In this study, we proposed a simple method for evaluating static soil springs of footings on the surface of a layered elastic half space, and we verified the applicability of the proposed method. Specifically, we proposed a method of approximating the static soil spring by a combination of soil springs of a spread footing foundation. We compared the results of our proposed method with static solutions of the generalized reflection and transition (R/T) coefficient method. As a result, we concluded that results of the proposed method agreed with the results of the R/T method.
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