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필댐 제체 재료의 동적 물성치 평가 : Ⅰ. 현장 전단파 속도 주상도
김종태(Kim, Jong-Tae),김동수(Dongsoo Kim),박헌준(Park, Heon-Joon),권혁기(Kwon Hyek-Kee) 한국지반공학회 2009 한국지반공학회논문집 Vol.25 No.12
It is very important to measure reliable dynamic properties of each zone in dam for seismic design. However, the Vs values of core and rock-fill zone are seldom determined by field test. Consequently, seismic design in dam is performed using Vs values assumed or empirically determined. So, it is required that reliable Vs has to be evaluated by in-situ test. In this study, surface wave method, which is nondestructive, was applied to dam to evaluate Vs profiles of core and rock-fill zone in dam. In 6 dams, using SASW and HWAW methods, Vs profiles were evaluated reliably. D/B of Vs profiles of each zone with depth and relationship between confining pressure and Vs profiles of rock-fill zone were constructed including existing results of other dams. The evaluated D/B and proposed relationship were compared with the frequently used empirical method by Sawada and Takahashi.