stiffness of cable 中文意思是什麼
stiffness of cable
解釋
鋼纜抗撓性-
Some key issues in the modeling of a long span composite cable - stayed bridge are discussed such as cable tension, dead load, large deflection, concrete deck stiffness, concrete deck - steel girder connection, and boundary condition. some conclusion can drawn from the thesis : 1. the initial equilibrium configuration of the bridge is clarified in the thesis
本文深入討論大跨度結合梁斜拉橋"基準"有限元模型建立過程中的幾個關鍵問題並得到一些有意義的結論： 1 .明確斜拉橋在索初應力和恆載作用下的初始平衡構型? ?處于初始平衡狀態時的幾何位置，給出了其計算方法。 -
The static analysis of the long span plate - truss composite cable - stayed bridges. first, the cr formation on the geometric non - linear structural analysis is introduced. next, the structural discretization of cable - stayed bridge, the stiffness matrix the formation of nodal force and the simulated construction system are introduced
首先介紹了本文採用的桿系結構幾何非線性問題的分析方法? cr列式法，其次介紹了板桁結合斜拉橋的結構離散及桿單元、梁單元的剛度矩陣以及節點力的形成方法，然後介紹了斜拉橋施工模擬體系的形成。 -
Secondly, calculation theory of construction for suspension bridge is presented under the ideal condition of dead load design. linetype change stiffness of cable and slip stiffness of supporting points are deduced based on segmental catenary theory. then numerical analysis method through sgkz2000 software are introduced in detail about calculating design linetype for suspension bridge, unstressed length of cable, erection linetype of cable and pre - displacement of saddle without loads, erection linetype of wire strands, the fixed position for erecting cable band and linetype of lifting stiffening girders
其次，根據懸索橋恆載設計理想狀態建立了懸索橋施工計算原理；以分段懸鏈線索理論為基礎，推導了懸索的線形變化剛度和懸索支點的滑移剛度；介紹了懸索橋成橋設計線形計算、吊索無應力長度計算、空纜線形與預偏量計算、絲股架設線形計算、索夾安裝位置計算和加勁梁吊裝線形計算的具體方法、數值演算法及軟體sgkz2000的計算模塊的實現。 -
The cable sag and bending stiffness effects are studied on the higher natural frequencies of cable vibration. it is found that the differences of the higher adjacent frequencies go to the fundamental frequency of the taut string theory even though the cable sag or bending stiffness is included. this unique characteristic of cable vibration is used to determine the cable tension with the well - known taut string theory
2 .考慮垂度和抗彎剛度對高階自振頻率的影響，探討了索相鄰頻率之差，發現索的高階頻差就是弦振動理論的基頻，利用這一特性，分析了頻差法測索力的精度和適用范圍。 -
A new bridge structure cooperated by the single - towered cable - stayed structure and the rigid frame structure was presented. many aspects of jinma bridge are researched and analyzed, such as the design method, configuration of the superstructure, section choice of the tower, design and construction methods of the deep - water bases, the stiffness of the cooperated rigid frames, strengthening way in the tower. it is concluded that this new structure is the economical, aesthetic and suitable project for the large - span situation
主要內容和結論如下： 1 、提出了獨塔斜拉橋與兩側剛構相連接的新型協作體系斜拉橋結構形式，並對該橋的方案比選、設計思路、橋面系結構形式、塔柱截面設計、深水基礎的設計及施工方法、協作剛構的剛度選取、塔柱的直束加固等方面作了詳細地計算分析和比較。 -
On the basis of large - displacement virtual principle, the finite element equations of stable type suspension bridge containing towers are driven. the stiffness matrixes of the cable element, the bar element and the beam element using node coordinates are given, too. such method has not been found in reference books
論文從有限位移彈性理論的虛功方程出發，推導出穩定橋全橋結構的非線性有限元運動方程，還推導了用節點坐標表示的索單元、桿單元和梁單元的單元剛度矩陣，這一點在參考文獻較少見。 -
Taking the bending stiffness, cable sag and cable inclination into consideration, the space vibration control of the cables using the visco - elastic dampers in cable - stayed bridges is investigated by joining the center difference method and the state space strategy. both the maximum modal damping ration and the optimal damper size are obtained, then the practical suggestions are proposed for the design of the dampers. the space nonlinear vibration equations of the cable - damper system are derived, and a new hybrid method for solving the cable - damper system is presented by combing the newmark method and pseudo - force technology
綜合考慮了拉索抗彎剛度、垂度的影響，研究了粘彈性阻尼器對斜拉橋拉索的空間振動控制，聯合中心差分方法及狀態空間法，得出了拉索麵內、外振動各階模態可能達到的最大阻尼比及相應的最優阻尼器系數，並對斜拉橋拉索的阻尼器設計提出了參考建議：考慮拉索抗彎剛度、垂度及幾何非線性，導出了索-阻尼器系統的空間振動非線性方程組，結合newmark方法及偽力（ pseudo - force ）方法，創新地提出了求解非線性方程組的雜交方法，根據拉索-阻尼器系統的阻尼特性，在各種荷載作用下，對索-阻尼器系統的非線性瞬態振動響應進行了研究，從系統響應的角度更加直接地驗證了阻尼器的控制效果。 -
Base on review of existed study and application in suppressing cable vibration in the world, technique of mitigating cable vibration with viscous damper and mr damper has been investigated in this dissertation, and the main contents and progresses in form of summary are as following : 1 the motion differential equations of the cable - damper system are formatted, which take into account these factors, such as the inclined angle, sag, stiffness etc. coupling motion between cable and deck is studied with analytical and numerical method. numerical results show that large amplitude vibration of cable with beat rhythm will occur when exciting frequency of deck equals two times modal frequency of cable
本文在對國內外斜拉索振動控制研究與應用現狀進行綜合評述、分析的基礎上，針對上述問題進行了深入研究，具體的研究內容和取得的成果包括： 1 、建立了斜拉索-阻尼器系統運動方程，對拉索與橋面的耦合振動作了分析和研究，數值結果顯示當橋面激振頻率等於某階拉索模態頻率的兩倍時，很小的初始擾動將引起拉索的大幅振動，並呈現拍振的特徵，與實測的拍振信號一致。 -
In view of the defects of the available bridge girder models ， this paper proposes a new double - girder model adapted to composite bridge sections for the dynamic analysis of long - span cable - stayed bridges in the proposed model ， the equivalence of the stiffness and mass systems of the bridge girders can be satisfied and the nodes and elements can be maintained in lower numbers the dynamic behavior of a cable - stayed bridge is analyzed by the new double - girder model and the conventional triple - girder model respectively the numerical results show the accuracy and efficiency of the proposed model
針對大跨度斜拉橋動力分析的現有橋面系模型的不足，提出了一種適用於疊合梁橋面系的新型雙主梁模型該模型既保證了橋面系剛度系統和質量系統的等效性，也使模型的節點數和單元數維持在一個較少的水平，提高了計算效率採用文中提出的雙主梁模型和傳統的三主梁模型對廣州鶴洞大橋進行了動力特性分析，結果顯示了本文模型的正確性和實用性 -
In the article there is also an analysis about the influence to the complete status of the prestressed concrete cable stayed bridge of such factors as the stiffness change of the girder and the deflection of cables and the concrete creep and the temperature change. this must be useful to engineer to take a reasonable stress limitation in determining the reasonable completed status
本文還採取對比分析計算的方法，對主梁剛度變化、拉索垂度、混凝土徐變及溫度變化等因素的影響進行了分析，並指出了它們的影響程度，有助於工程師們在確定成橋狀態時合理地選取控制條件。 -
At last, some conclusion has been obtained. at present the effect of cable and its pre - stress is not very clear. based on the rule of conversation of energy, it is proved to be right in theory that the stiffness of the linear elastic structure is larger with the increase of its pre - stress
針對目前關于索在結構中的作用以及索中預應力的增加對結構剛度的影響到底如何等討論，本文從能量守恆原理出發，從理論上推導證明了在線彈性范圍內，結構的剛度隨預應力的加大而提高這一重要結論。 -
By the test of anchor cable pull - out intensity, research is carried on anchor capability, stiffness coefficient and prestress losses of anchor cable in reinforcing similar soil slopes. the mechanisms of reinforcing similar soil slopes by prestressed anchor cable sash ( beam ) are studied by the method of combination of field test, theory analysis and numerical simulation, as a result, the calculational pattern of internal force of anchor cable sash ( beam ) is put forward
本文通過大量野外調查，提出類土質邊坡的概念，並分析了它不同於一般粘性土邊坡的特性；通過錨索抗拔試驗研究了類土質邊坡的錨固力大小、錨索剛度系數和錨索預應力損失情況；通過現場試驗、理論分析和數值計算相結合的方法，研究預應力錨索框架（地梁）加固類土質邊坡的機理，提出預應力錨索框架（地梁）的內力計算模式。 -
Abstract : with the increasing of suspension bridge ? s span, the gravity stiffness of suspension cable itself is more important than vertical deflection resistance stiffness of stiffening girder which is serviced for the whole structure. in order to provide more knowledge of gravity stiffness of suspension cable, in this paper, gravity stiffness of suspension cable is formulated briefly and theoretically in case of ignoring the existing of the stiffening girder. the deformation and internal force of suspension cable can be calculated approximately in this way
文摘:隨著懸索橋跨度的增大，加勁梁的豎向抗彎剛度提供給整個橋跨結構的剛度僅佔次要地位，而懸索自身的重力剛度卻佔有重要的作用.為加深對重力剛度的進一步認識，筆者對特大跨度的懸索橋的重力剛度進行簡要的理論推導，在忽略加勁梁存在的情況下，可近似地計算懸索橋的變形和內力 -
Based on the virtual work increment equation of updated lagrangian formulation, tangent stiffness matrix of spatial beam / truss element is obtained. according to base assumptions and catenary equation of cable, the iterative formulations of tangent stiffness matrix and nodal force of the spatial two - node catenary cable element are put forward. therefore the entire geometrical non - linear finite element theory for the analysis of suspension bridges is established
本文的研究工作和取得的主要成果有: 1 .將大旋轉小應變空間梁（桿）單元與兩節點空間懸鏈線索單元結合起來，形成了一套完整的適合於懸索橋結構分析的幾何非線性有限元計算方法。 -
In order to discuss the similarities and differences of the interaction in different terms, adopt single factor alteration method to analyze it more in the paper. discuss the influence each factor alteration makes the horizontal displacement and stress of stabilizing pile from three aspects, earth parameter of sliding plane ( c 、 ), anchor cable parameter ( pres - tress 、 stiffness ), pile parameter ( burying deep 、 space between ), ascertaining the main factors that influence stabilizing pile with anchor cable
論文中主要從滑裂面土體的抗剪強度參數（ c 、值） 、錨索的參數（錨索預應力大小和錨索的剛度）和樁參數（樁的埋深和樁間距）三個方面來討論每個因素變動對樁身水平位移和兩側結點應力的影響，從而確定影響錨索抗滑樁的主要因素。 -
The main work of this thesis includes : 1. using energy theory, the cable sag and bending stiffness effects are investigated on the determination of cable tension forces through cable ' s fundamental frequency. based on the curve fitting, the practical formulas are proposed where the cable tension can be easily estimated using measured fundamental frequency
本文的主要工作包括： 1 .考慮拉索的垂度和抗彎剛度對基頻的影響，用能量的方法，並輔以曲線擬合，提出了由基頻計算索力的實用公式，公式與理論解的誤差在以內，並對公式的適用范圍進行了討論。 -
Then the effect of cable arrangements to the structure dynamic behaviors was studied. the free vibration frequencies and dynamic internal forces of seven types of cable arrangements were calculated, and the conclusion that diagonal cables are sensitive to structure stiffness are obtained
通過對七種不同布索方式下結構的基頻和動內力的比較，得到了斜向索對結構的剛度影響比較大，若需提高結構剛度，應首先考慮布置斜向預應力索的結論。 -
The cable shape under bridge - finished condition was obtained by taking the empty - cable condition as the initial condition and calculating the cable shape under dead load. 4. the initial strain under bridge - finished condition is an important parameter, which defines the initial balanced position and gravity stiffness of suspension bridge
懸索橋成橋主纜的索形需要從空纜狀態出發，以空纜狀態為初始狀態，在主纜索上施加成橋恆載，並通過計算得到最終成橋時主纜的形狀及位置； 4 -
Stiffness formula of cable element under general situations and its application
一般情況下小垂度索的剛度方程及其應用 -
In order to enhance the stiffness of cable and cabin system, two downward cables are added. the following eight chapters are divided in the dissertation
全文共分8章進行論述，各章所討論的主要內容如下：第一章緒論。
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