中文簡介

機(jī)械基礎(chǔ)的設(shè)計(jì)需要在感興趣的頻率下預(yù)測地基系統(tǒng)的動力響應(yīng)。響應(yīng)通常根據(jù)一些參數(shù)進(jìn)行量化，這些參數(shù)包括位移、動態(tài)剛度、共振頻率、共振頻率和固有頻率下的振幅。本研究的目的是調(diào)查垂直動態(tài)響應(yīng)的嵌入式基礎(chǔ)實(shí)驗(yàn)。結(jié)果表明，埋置增加了地基系統(tǒng)的剛度、阻尼和固有頻率，減小了位移和共振幅值，但埋置對共振頻率影響不大。

英文簡介

Design of machine foundations requires the prediction of the dynamic response of the foundation system at the frequencies of interest. The response is typically quantified in terms of a number of parameters that include the displacement, the dynamic stiffness, the resonant frequency, the amplitude at the resonant frequency and the natural frequency. The objective of this study was to investigate the vertical dynamic response of an embedded foundation experimentally. It was found that embedment increases the stiffness, damping and natural frequency of a foundation system, reduces the displacement and resonant amplitude, but that embedment has very little effect on the resonant frequency.