自由振动法自由振动法突然卸载法（初位移法）突然卸载法（初位移法）突然加载法（初速度法）突然加载法（初速度法）dKjdyy动态电阻应变仪动态电阻应变仪记录仪记录仪jydyjydytNf NN00StNsSNtNfln1nnaan kaknknnnnnnnknnaaaaaaaaaa 132211kaaaaaaaaaaknknnnnnnnknn 132211lnlnlnlnlnknnaakln1)cos()(tAetantTTttnneeeaann)(1Taann1lnrT212 . 0r22rTr2r12122224)1(d00dmax21dd)21(21d222224112121）（）（222428421081242224）（）（2)814244222222（）（122122121221212122nxxn11 111201021220122dFA11F11dFA11drm1122/Admr112/AtBLIFmsin
