自振周期 的英文怎麼說

中文拼音 [zìzhènzhōuqī]
自振周期 英文
natural period of vibration
  • 自 : Ⅰ代詞（自己） self; oneself; one s own Ⅱ副詞（自然;當然） certainly; of course; naturally; willin...
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 周 : Ⅰ名詞1 （圈子; 周圍） circumference; periphery; circuit 2 （星期） week 3 [電學] （周波的簡稱） c...
  • 期 : 期名詞[書面語]1. （一周年） a full year; anniversary 2. （一整月） a full month
  1. Based on extensive investigation of construction technique history of chinese ancient buildings, the structure method, structure developing history and seismic behavior of chinese ancient timber structure buildings are analyzed in several respects of the structural system and form. through a series of experiments on constituent parts of chinese ancient timber building structure, including the tests on the corbels and brackets called dougong subjected to low cyclic reversed loadings, the tests on the wooden frame using the tenon - mortise joints as connections of column and beam subjected to low cyclic reversed loadings, the tests on vibration isolation effect of friction and slippage between column footing and their socle base, and a series of shaking table tests on a chinese ancient timber structure palace building mode under artificial earthquake at serving conditions, destroyed conditions and reinforced conditions, many valuable results of structures such as moment - curvature hysteretic loops of dougong structure and tenon - mortise joints under low cyckc reversed loadings, the static function, the seismic performance, energy dissipation, vibration reduction, energy - loss mechanism, nechanicalmode and failure mode were studied. aplenty of valuable parameters of the structure system were obtained, such as the natural period of structure, vibration modes, damping ratio, factor of vibration isolation, oscillate amplitude of ineitial accebration, velocity and displacement, magnitude of slippage, and the mechanism of structure failure and collapse etc. based on these research, the complete analysis of ancient timber structure under earthquake were carried out in which including mechanism analysis method, calculating mode, strength analysis of members and joints, strengthening methods for serving damaged ancient timber structure buildings were also taken into account

    依照宋代《營造法式》建造了抬梁式殿堂木結構構件及結構模型，對中國古代木結構中的典型構造如：柱腳在礎石頂面平擱簡支、柱架榫卯連接、柱高不越間之廣、側腳、生起、斗拱等的構造機理及結構功能進行了量化分析和實驗研究： （一）通過木柱石礎靜摩擦試驗，測定了柱腳與石礎古鏡面間的摩擦系數及摩擦力隨上部結構荷載變化的規律； （二）通過單柱承載力試驗，測定了古建築中木柱的受力變形特徵、破壞模式、及模型材料的變形模量、極限承載力、極限變形等參量； （三）通過柱架低周反復荷載試驗，測定了柱架的抗側移剛度、柱架恢復力特性及滯回曲線、榫卯張角剛度及其變化規律、柱架及榫卯的極限承載力和極限變形、及榫卯減振參數； （四）通過斗?低周反復荷載試驗和受壓試驗，測定了古建築木構件與木構件間摩擦系數，斗?抗側移剛度，斗?恢復力特性及滯回曲線，斗?抗壓極限承載力及受力變形規律； （五）通過抬梁式殿堂間架模型振動臺試驗，測定了殿堂木構架結構自振周期，地震反應振形、阻尼特性及阻尼比；按結構分層特點對柱腳、柱頭和斗?層上的屋蓋的地震反應採用多點同步測量，對柱根滑移、榫卯變形、斗?的變形、復位、耗能減振參數等進行了定量分析。
  2. 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。
  3. According to theory of bent structure, the paper applies the moment balance and potential energy theory, and works out the modified modulus 1 and 2 for the depth of burying foundation and toft transmutation, which effect buildings dynamic period

    根據排架結構分析理論，應用力矩平衡及勢能原理分別推導出地基變形及基礎埋深對結構自振周期的修正系數_ 1和_ 2 。
  4. The essay combines " code for seismic design of buildings " ( gb50011 - 2001 ), analyzing and discussing bent structure of one - story industry buildings tinder the interaction of the seismic, ground - structure, and works out calculation model for bent structure ' s dynamic period about the depth of burying foundation and toft transmutation ; the model is employed expediently, adapts to actual engineer construction design at present

    本文結合我國《建築抗震設計規范》 （ gb50011 - 2001 ） ，對單層工業廠房排架結構在地震作用下土?結構共同作用問題進行了分析討論，給出了考慮基礎埋深與地基變形影響時排架結構自振周期的計算模型；這?模型應用方便，適合目前實際工程結構設計使用。
  5. To reproduce the narrow - band response, based on the thought of kanamori etc., the damping ratio and natural period are modified. through this adjustment, the narrow - band response can be reproduced, but for some natural periods the adjustive damping ratio has become negative. the negative damping is strange and can not be explained by the equation of motion for sdof system

    為了生成窄頻帶反應，本文根據kanamori等人的方法調整了計算時的阻尼比及自振周期，調整后的單邊差分方法能在共振區域生成很好的窄頻帶反應，但是對一些周期點的阻尼比調整成為了負值，這從系統的動力平衡方程是難以解釋的。
  6. Through researching practical engineering on anti - earthquake analysis between the concrete structure and storey - between truss, this paper compared dynamic period and seismic behavior of this two kinds of structures, calculated force and deflection, put forward into the storey - between truss is an economic, reasonable, practical structure, it can conveniently construct and save space

    比較了這兩種結構的自振周期、振型，並對其內力（主要梁）的內力、變形進行驗算，說明在地震地區，選用層間桁架結構比混凝土框架梁具有更好的抗震性，同時具有經濟合理、方案可行、方便施工、節約空間的特點。
  7. Secondly, to analyze seismic response of the concrete gravity dam, subspace iterative method was applied to compute free vibration period of the dam, time integration method was built up for the seismic time history analysis and formulation of coupled vibration of reservoir water and dam were also deduced

    其次，針對混凝土重力壩的地震響應分析問題，採用子空間迭代法計算了大壩的自振周期，建立了地震時程分析的逐步積分方法，並且推導了庫水和壩體耦合振動的理論公式。
  8. Based on the unified recursive formula, the four algorithms included in this study are the central difference method, the newrnark ' s method, z - transform method, and duhamel ' s step integral method. the accuracy, the phase and other existent problem are studied in this paper. it is proved in this paper that the recursive parameters b1and b2are relate to the poles of theoretical transfer function

    分析中可以發現，中心差分方法， newmark中點加速度方法、 z變換方法及duhamel逐步積分法在精度范圍內其計算相位是沒有畸變的，中國地震局工程力學研究所頃土學位論文一但是中心差分方法， newmark中點加速度方法隨著采樣間隔及系統自振頻率的增大，系統的固有自振周期被改變，其傳遞函數的共振區域與理論傳遞函數的共振區域會發生分離。
  9. The analysis on unilateral, bilateral and lateral - torsional coupled seismic response of base - isolated structures with combined isolation systems is carried out, and the control of lateral - torsional coupled seismic response of structures is discussed. the energy analysis on base - isolated structures is conducted by energy method. the influence on the total input earthquake energy owing to the frequency, intensity and lasting - time of earthquake and so on is studied

    採用能量方法，建立基礎隔震結構能量反應方程，對基礎隔震結構地震反應進行能量分析，研究地震動的頻譜特性、幅值、持時、上部結構自振周期及隔震系統動力性能等因素對結構總輸入能量的影響;並對基礎隔震結構進行耗能分析，研究結構總輸入能量在結構中的分配，為基礎隔震結構能量設計提供依據。
  10. Shear wall will bear mostly part of horizontal force. in this case, it can satisfy the limitation of displacement, and can be insure that the bottom shear force, natural vibration period of structure and the displacement curve can be novel. furthermore, it can supply good base for proceeding design

    在合理的布置下，剪力墻承擔大部分水平力，使結構滿足側移限值，並使結構的底部剪力，自振周期及側移曲線不發生異常，並為以後的工作打下良好的基礎。
  11. Using this method not only the necessary condition of existence and the approximate analytic expressions of the periodic solutions for primary - harmonic, super - harmonic and sub - harmonic resonances can be obtained, but the criteria of stability for these solutions can also be gained

    該方法給出了二階強非線性非自治系統主諧波共振和超諧波、次諧波共振周期解存在的必要條件，求得了這些周期解的近似解析表達式，並且得出了解的穩定性判據。
  12. The change of natural frequency and lateral forces of the structure due to plasticity of the structure are taken into account

    文中考慮了結構進入塑性後由于剛度改變造成的自振周期和側向力的變化。
  13. ( 3 ) furthermore, the stiffness effect induced by the infill walls makes the natural period of the frames decrease, which makes the earthquake forces put on the structures increase

    3 .另外，填充墻剛度效應的存在使得結構自振周期減小，從而使作用於整個建築上的水平地震作用增大。
  14. The 1st to 12th vibration modes and periods which influence greatly on the truss are listed to investigate the distributions of the truss mass and stiffness

    在對該結構體系進行模態分析后，提取對結構有影響的前12階模態，列出每一階模態的自振周期及主振型，用於考察結構的質量分佈和結構剛度。
  15. It is well known that end - plate connections have definite flexibility, which can increase damp, prolong period, and decease swing of structure. so it can reduce the damage, and is one of the best choices for resisting earthquake

    端板連接是一種具有一定柔性的連接形式，當框架結構採用這種節點時，可以增加結構的阻尼，延長結構自振周期，減小震幅，從而降低震害，是抗震的理想選擇之一。
  16. Finally, the cqc ( t ) algorithm which used to calculate the non - stationary under earthquake random excitation was derived, the exemplary analysis show that the improvement of accuracy of cqc ( t ) algorithm is limited for the normal structures which have low period

    最後本文提出了計算地震動隨機激勵作用下非平穩響應的cqc （ t ）方法，通過算例比較發現對於一般的自振周期較小的結構， cqc （ t ）方法的精度提高並不明顯。
  17. The meaning of cqc ( t ) algorithm is the difference in time domain between the peak value location in time axis of input earthquake and model response of structure, which is called delay time. through the delay time calculating of a series of oscillators with different damp ratio and natural vibration frequency, it is found that it will bring biggish error if the cqc algorithm applied on the structure which has long period, and the time dependent cqc ( t ) algorithm could solve the problem easily

    Cqc （ t ）方法的意義在於輸入地震動峰值與結構模態響應峰值在時間軸上的時間差，我們稱之為延遲時間，通過計算具有不同周期和阻尼比結構的延遲時間，發現對于自振周期比較長的結構， cqc方法會帶來比較大的誤差，而基於時程的cqc （ t ）方法能夠解決這個問題。
  18. Thirdly, subspace iterative method is adopted in the paper, and natural periods and modes of preceding fifteen steps of zhongshan no. one bridge are solved, dynamic characteristics of this kind of structural system are obtained, inherent link between dynamic characteristics and structural rigidity is discussed deep, the viewpoint is provided that dynamic characteristics of a structure are considered as important basis whether structural scheme is rational ; in addition, the author brings out some own views and opinions about calculational methods of prestress value of different sorts of tie rods, simulation of local rigidity region, foundation of a local finite element model of a node

    另外，提出在施工階段中某些構件的應力有可能比成橋狀態的應力還大，需防止在施工狀態中構件因強度不足而破壞；再次，採用于空間迭代法，求解了拱式組合體系橋梁的自振周期和振型，得出該種結構體系的動力特性，深入探討了動力特性和結構剛度之間的內在聯系，提出了把結構的動力特性作為判斷結構方案是否合理的重要依據。此外，本文還就系桿預應力值的確定方法、局部剛度區域的模擬、節點局部有限元分析提出了作者的見解和看法，對解決類似問題得出了一些有參考意義的結論。
  19. The study indicates that the base - isolated structure has reduced the horizontal stiffness and enlarges the self - vibration period. thus, makes its frequency far away from occur with the place earthquaking. therefore, these will reduce the horizontal earthquake effect

    理論分析研究表明：基礎隔震結構由於在房屋的基礎頂面設置柔性的橡膠墊，從而降低了隔震結構的水平剛度，增大了結構的自振周期，使其遠離與場地發生共振的頻率段，因此也就降低了結構的水平地震作用。
  20. Based on the general design of bent structure. aiming at multi - complexion bent structure, the essay calculates the dynamic period and domino effect of earthquake, 66 groups in all about shearing force ( q ) and crooked ( m ) of control section. the essay chooses appropriate regress parameter through repeating attempt, and makes use of origin regress analysis program protract dot chart of multi - structure, through multinomial regress analyse, finally works out the simplified formulas for single - stride bent with different stride shearing force ( q ) and crooked road ( m ) of control section

    以排架結構常規設計為基礎，針對多種工況下的排架結構，計算了自振周期、地震作用及其效應，共有66組控制截面的剪力q和彎矩m 。然後經過反復嘗試選定合適的回歸參數，利用origin回歸分析程序繪出各類結構的散點圖，經過多項式回歸分析，得到單跨排架不同跨度時控制截面剪力和彎矩的簡化計算公式。
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