damping of soil 中文意思是什麼

damping of soil 解釋
土的動力性質阻尼
  • damping : n. 【物理學】阻尼，減幅，衰減。 damping resistance 阻尼電阻。
  • of : OF ＝Old French 古法語。
  • soil : n 1 泥土，土壤；土質。2 土地，國土。3 滋生地，溫床。4 農業生活，務農。n 1 臟東西，污物，污穢，污...
  1. Considering the similitude law for shaking table test, we study the test results and obtain some conclusions which are a ) generally, the silty soil in test box liquefies and the liquefied time has relation with the amplitude of acceleration, b ) when the intensity is on and above eight degree, the silty soil deposit will be liquefied dramatically, c ) the relationship of the pore water pressure is relevant to the cycle loading which represents when the cycle loading ranges from little to great, the relationship is represent as a concave curve, or else as a protruding curve and tends to stability. ( 3 ) based on the triaxial compression test and the resonant column test, some studies are made such as a ) the duncan - chang parameters of constitutive model, b ) the dynamic shear modulus ratio and c ) the damping ratio of the site soil deposits. in order to deal with the test data, a computer program is compiled

    （ 2 ）利用小型振動臺進行了k _ 0固結狀態下粉土的振動液化模擬研究，通過分析正弦荷載作用下的試驗資料，驗證了粉土的孔隙水壓力增長模式的合理性；從微分方程推導了基於土體振動臺模型試驗的相似律，並從模型實體、孔壓時程曲線和相似律等方面做出了分析，得出了如下結論：在小型振動臺試驗中，模型箱中的粉土都發生了液化，液化的時刻和輸入加速度幅值有關，而對頻率的變化不太敏感；粉土在相當於8 9度地震烈度的加速度幅值作用下可能產生嚴重的液化；孔壓的增長曲線形狀與施加的荷載有關：當施加荷載為由小到大的形式時，曲線形狀為上凹的曲線；當施加荷載為等幅的正弦荷載或荷載幅值由大到小時，曲線形狀為上凸的曲線，且逐漸趨于穩定。
  2. The pile is assumed to be vertical, elastic and of variable impedance, and the soil is layered and with viscous damping

    假定樁為豎直彈性變阻抗體，土為成層線性粘彈性體，其材料阻尼為粘性阻尼。
  3. The pile is assumed to be vertical, elastic and of uniform cross - section, and the soil is regarded as a linear visco - elastic layer with hysteretic damping

    假定樁為豎直彈性等截面體，土為線性粘彈性體，其材料阻尼為滯回阻尼。
  4. It indicates that viscous damping of soil layer shows a clear different effect on dynamic response at pile head comparing to hysteretic damping

    研究表明，對于樁頂響應，樁側土的粘性材料阻尼呈現出與滯回阻尼明顯不同的影響特點。
  5. Based on these solutions, a parametric study is conducted to determine the main features of the soil - pile system vibration, and the special influence of viscous damping of soil layer around pile is discussed

    基於所得解對樁土動力耦合作用的內在機理、粘彈性土層動力反應特性進行了分析，並重點討論了樁側土不同形式材料阻尼對樁頂動力響應的影響。
  6. Hysteretic damping application in time domain analysis of soil layer

    滯后阻尼在土層時域分析中的應用
  7. Time domain torsional response of dynamically loaded pile in hysteretic type damping soil layer

    層狀地基中群樁水平振動
  8. Time domain axial response of dynamically loaded pile in viscous damping soil layer

    樁與粘性阻尼土耦合縱向振動時樁頂時域響應研究
  9. The influences of soil structure, confining pressure and strain amplitude on dynamic properties of recently deposited soils of nanjing and its surrounding areas are discussed. furthermore, based on test results and theoretical analysis, the averaging curves, recommended values and envelopes of dynamic shear modulus ratio ggmax and damping ratio versus dynamic strain for recently deposited soils of nanjing and its surrounding areas are presented. by use of vibration triaxial apparatus, nanjing silty clay and fine sand interbedded strata and nanjing fine sand were tested and their test results are discussed

    通過自振柱試驗，探討了土的結構性、有效圍壓和應變幅值大小對動荷載作用下南京及其鄰近地區新近沉積土的動剪切模量、阻尼比和應力?應變關系的影響；通過試驗和理論分析，給出了南京及其鄰近地區的粘土、淤泥質粉質粘土、粉質粘土、粉質粘土與粉砂互層土、粉土以及砂土等六類新近沉積土中典型土類的動剪切模量比和阻尼比隨剪應變幅值變化的平均曲線、包絡線和推薦值。
  10. Time domain torsional response of dynamically loaded pile in viscous damping soil layer

    樁與粘性阻尼土耦合扭轉振動時域響應研究
  11. The main original work includes : 1. the interaction between an integral pile and a uniform visco - elastic soil layer with viscous damping or hysteretic damping is theoretically studied, and the pile response to a harmonic load is obtained in a closed form and used to define complex stiffness at the pile head. semi - analytical solution of the velocity response in time domain subjected to a semi - sine wave exciting force is also given

    主要工作包括： 1 、在考慮樁周土三維波動條件下，對滯回阻尼、粘性阻尼單層均質土中樁土縱向耦合振動問題進行了解析研究，分別得到樁頂位移、速度頻域響應以及復剛度的嚴格解析表達，以及半正弦脈沖激振力作用下樁頂時域響應半解析解。
  12. Through caculation example, the factors that will influece the results of seismic soil response including element meshing, intergration step, damping, boundary were studied and the regularity was generalized. in the third part, the pile - soil - superstructure model was constructed and solved

    通過算例考察了影響土體地震反應的單元網格劃分、積分時間步長、阻尼取值、邊界等因素，並對土體地震反應的規律性現象做了總結。
  13. Then the dynamic model of saturated soil layer caused by pile longitudinal vibration is founded. incorporated wave propagations into saturated soil layer, the characteristics of soil resistance factor and the mechanism of the radial damping are analyzed, as well as distributions of shear stress and pore pressure in saturated soil caused by pile vibration

    然後利用上述解析解分析了飽和土層復阻抗，並從飽和土波動理論出發，建立了樁縱向振動引起的飽和土層振動模式，剖析了輻射阻尼產生機理，研究了樁縱向振動引起的飽和土層中剪應力及孔隙水壓力分佈。
  14. For the purpose of determining the basic problems such as the computed field and the mesh sizes in the finite element method, the paper first deals with the problems of a semi - infinite soil domain with radiation damping and material damping through the transient response of a single pile, which are used in the finite element method

    本文首先利用單樁的瞬態響應來考察有限元計算中處理半無限土體的輻射阻尼和材料阻尼問題，以便確定有限元計算區域大小，網格尺寸等基本問題。
  15. The deformation characteristics of pavement section and soft soil subgrade under traffic load are analyzed, considering the effects of load ( including type, amplitude and frequency ) and parameters of soft soil ( including resilient modulus, cohesion, internal friction angle, poisson ratio, damping ratio et al )

    分析了荷載因素（包括荷載類型、荷載幅值、荷載頻率）和地基土體參數（包括回彈模量、內聚力、內摩擦角、泊松比、阻尼比）對變形的影響。
  16. Experimental study on dynamic damping ratio of frozen soil under cyclic loading

    循環荷載下凍土的動阻尼比試驗研究
  17. The framework and results of this study is thus summarized as follows : 1. analyzing the effect of the nonlinear parameters on seismic response. so far the g / g _ max - ( transient dynamical shear modulus over the maximum shear modulus vs. shear strain ) and the - ( equivalent shear hysteretic damping ration vs. shear strain ) curves are widely employed in the experimental method in studying soil dynamic property, supposing under equiamplitude cyclic load

    目前，人們利用實驗手段分析土體動力特性時給出的最基本的描述量是g g _ （ max ） ?曲線（等效動剪切模量與最大動剪切模量的比值隨應變幅值變化的曲線）及?曲線（等效剪切滯回阻尼比值隨應變幅值變化的曲線） 。
  18. Soil - pile interaction in torsional vibrations of a pile in viscious damping soil layer

    考慮樁土耦合作用時樁基扭轉振動特性研究
  19. During several decade passed, many experimental studies and theoretical analysis have been done on the ground stiffness, the damping and the vibrating mass of soil by adopting various model system. however, for the reason of different experiment situation and different analytic emphasis, the conclusions are different too

    在過去的幾十年中，許多中外學者採用不同的模型體系對地基剛度、阻尼和參振土質量等進行過不少的實驗研究和理論分析，但因實驗條件和分析側重點不同，所得結果也各異。
  20. So a new method is presented ( equivalent damping of pile lateral damping ) to realize the analysis of integrity pile in soil. in this method, the coefficient of the damping is calculated by the length ratio of each pile in a soil layer to the whole pile in the heterogeneous soil. and through much calculation by use of matlab program, the equivalent damping in the heterogeneous soil is proved to be correct

    提出了採用加權的方法對成層土中樁側土阻尼系數進行等效簡化的概念，即把各層土阻尼系數乘以該層土中樁段長度占樁身總長的比值（即為加權系數） ，然後相加即得到一個等效阻尼系數。
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