ABSTRACT
The Hybridnamic testing is a kind of falling-mass type rapid load test (RLT), by which several blows on a pile can be conducted easily and quickly. Hence, static load-displacement curve is constructed by connecting UnLoading Point (ULP) loads. This procedure is called UnLoading Point Connection (ULPC) method. ULP method or ULPC method is employed for cases of the relative loading duration T r = t L/(2L/c) greater than 5, where t L is loading duration, L is pile length and c is bar wave velocity. ULPC with Case method (ULPC_CM) is proposed in this paper so that RLT can be employed even in cases of T r less than 5. A case study was carried out to demonstrate the applicability of ULPC_CM. Load-displacement curves from the ULPC_CM interpretation of RLT signals having smaller T r less than 5 were comparable to the conventional static load test result.
