eigenperiod 中文意思是什麼
eigenperiod
解釋
本徵周期-
Some conclusions are drawn : 1 ) effect of inertial force from superstructures on the lateral seismic response of single pile can not be ignored ; 2 ) the lateral seismic response of single pile induced by far - field earthquake are mainly affected by acceleration mass of superstructure > site eigenperiod. it increases with the increment of accele ration and mass of superstructure. as the site characteristic frequency approaches the self - oscillation frequency of the pile, sympathetic vibration occurs and the value of lateral seismic response reaches maximum ; 3 ) as the stiffness ratio of pile to soil increase, the relative displacement of pile to soil increases ; 4 ) the lateral seismic response of fixed - head pile is much smaller than that of free - head pile
將其解析解與具體的的抗震設防烈度和場地特徵周期結合起來，計算分析了成層地基中單樁的橫向地震響應，得到了以下結論： 1 ）上部結構慣性力對樁的橫向地震響應的影響不可忽略； 2 ）成層地基中的單樁的橫向地震響應主要受地震基本加速度、場地特徵周期、上部結構質量的影響，隨地震基本加速度、上部結構質量的增大而增大；場地特徵頻率越接近樁基自振頻率，樁基地震響應越大，等於自振頻率時，由於發生共振現象，樁基響應幅值最大； 3 ）樁土剛度比越大，樁土之間的相對位移的幅值越大； 4 ）樁頂固接的連接方式，可以有效地降低地震時單樁的橫向地震響應。 -
4. the tidal gravity observations, recorded with a scg at wuhan, are employed to investigate the influences of the ocean tide loading on the fitted fcn parameters and the local characteristics of the nearly diurnal resonance on the tidal gravity observations. it is found that the influence of different co - tides on the fitted eigenperiod and the real part of the resonance strength of the fcn is very small
結果表明，不同海潮模型對擬合的fcn周期和共振強度實部影響甚微，差異主要表現在品質因子和共振強度虛部的擬合，通過不同海潮模型改正後重力潮汐觀測資料的迭積，可減小海潮模型不確定性的影響，獲得fcn共振參數。 -
The discrepancies are less than 1. 5 % for the eigenperiod and 7. 7 % for the real part of the resonance strength
採用國際ggp觀測網中14臺超導重力儀21個長期、穩定、連續的高質量重！ -
Combining these formulas with some earthquake intensity and site - eigenperiod, the lateral seismic responses of free - head and fixed - head pile groups were calculated
結合具體的抗震設防烈度和場地特徵周期，計算了成層地基中群樁的橫向地震響應。
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