superstructure vibration 中文意思是什麼

superstructure vibration 解釋
上層建築振動
  • superstructure : n （對下層基礎而言的）上部建築 （opp substructure） （船舶的）上部構造，（對經濟基礎而言的）上層...
  • vibration : n. 1. 振動，顫動；擺動；【物理學】振動。2. （心的）震顫。3. （思想情緒的）激動。4. 猶豫。adj. -al
  1. 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。
  2. The noise of ship superstructure cabin has becoming a more and more important problem because of many negative factors caused by ship vibration and noise, such as the fatigue and breakage of ship structure, failure performance of the instrument and device and the uncomfortable feeling, even the health weakening of passengers and crew

    船上噪聲不僅會導致某些結構聲振疲勞破壞，還會影響艙內各種儀器、設備作用的正常發揮，對居住在艙室的人來說輕則影響到其居住環境的舒適性，重則對人體健康有危害。因此，船舶上層建築的艙室噪聲問題已日益引起船舶設計工作者的關注。
  3. Secondly, this paper described two analytical methods for calculating superstructure ' s local vibration of container ships and, calculated and compared the natural frequencies of local structure for 5618teu container ship ' s superstructure by these two methods

    其次，本文介紹了船舶上層建築局部振動的兩種解析法計算方法，並用這兩種方法對5618teu集裝箱船上層建築的局部結構進行了固有頻率的計算和對比。
  4. This paper analyzed the superstructure ' s vibration of large scale container ships and includes : 1 ) forecasting for superstructure ' s global vibration of container ships ; 2 ) analytical method calculation for superstructure ' s local vibration of container ships ; 3 ) fem method calculation for. superstructure ' s global vibration of 1714teu container ship ; 4 ) vibration test on board the 1714teu container ship

    本文主要對大型集裝箱船上層建築振動進行了研究，分為幾個方面： 1 ）集裝箱船上層建築整體振動的預報； 2 ）集裝箱船上層建築局部振動的解析法計算分析； 3 ） 1714teu集裝箱船上層建築振動的有限元計算； 4 ）集裝箱船上層建築振動的實船測試。
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