linear arch 中文意思是什麼
linear arch
解釋
抗力線拱-
Abstract : the mechanical analysis for arch bridge with flat hinge joints is a mechanical problem with non - linear boundary. mechanical analysis of methods at present is not clear, which can not calculate the arch bridge with changeable section and section with complicate shape. in this paper, the new method used to get the section resistance coefficient k is presented, the iterative procedure is established to calculate the internal forces of arch bridge with flat hinge joints, and the computational example is given. the method can apply to the arch bridge with any numbers of flat hinge joints and any shape section
文摘:平鉸拱橋結構的受力分析屬于邊界非線性力學問題，目前的一些方法受力分析不太明確，對變截面、復雜形狀截面等平鉸拱橋無法進行計算.針對這種情況，提出了確定平鉸截面抗力系數k的新方法，建立了計算平鉸拱橋內力的迭代演算法，並進行了實例計算，研究結果表明，這一方法對具有任意個平鉸、任意形狀截面的拱橋結構是適用的 -
The software ansys6. 0 is used to analysis the stability of the state after construction of tongwamen bridge, linear method is used in analyzing the finite element model of the bridge, the coeffient of stability of different state after construction is given. on the basis, the effect of different factors such as the arrangement of lateral brace, the sloping angle of arch ribs, the stiffness of bridge deck system, the effect of non - orientedly conservative loadings of the hanger and tie bar etc is discussed. the different coefficients of stability of changing these factors are given, so the factors that are vital to the lateral stability of x - type arches are found, and the rationality of the methods taken to enhance the lateral stability of tongwamen bridge is evaluated
本文應用有限元分析商業軟體ansys6 . 0 ，採用線彈性方法，通過對該橋的空間有限元模型進行穩定性分析，得出其成橋運營階段各種工況下的穩定安全系數。在此基礎上，本文還通過有限元模型分析，就拱的矢跨比、吊桿（立柱）的非保向力效應、橋面系的剛度、橫撐布置形式、拱肋側傾角等因素對該橋整體穩定性的影響展開探討與研究。文中給出了各因素變化情況下的穩定安全系數，指出了對鋼管混凝土提籃拱橫向穩定性有顯著影響的因素及其合理變化范圍，並對銅瓦門大橋提高橫向穩定性的措施的經濟合理性進行了分析。 -
Then the probably factors which affect the arch in the wall are analyzed through the linear program in which the ratio of the height to the span of the beam is the most
然後用線彈性程序對可能影響墻梁拱效應的各個因素進行了詳細的分析，得出托梁的高跨比是影響墻梁拱效應高度的最主要因素。 -
Moreover, based on routine research method on abutment stability, non - linear finite element shear strengthes reducing by step iteration method is put forward in this paper, which is also applied in the analysis of abutment stability of tengzigou arch dam successfully
在此基礎上，介紹了非線性有限元強度折減迭代解法，探討了復雜地基上拱壩整體穩定安全度的評價方法，並應用於藤子溝拱壩穩定安全度評價。 -
The linear complementarity method ( lcm ) for 3d elasto - plastic contact problem and the non - entirety analysis of arch dam were studied in this dissertation. the main contents are as follows : 1
本文對三維彈塑性接觸問題的線性互補方法以及拱壩結構的非整體性分析進行了研究，主要內容如下： 1 -
According to the finite element method result, the parametric vibration of cables in cable - stayed arch bridge becomes prone to be exhibited. then a model of non - linear parametric excitation vibration coupling the stayed cable and the girder, namely, the mode of cable - stayed beam, is proposed in the thesis. and the nonlinear dynamical
3 、首先利用有限元分析方法，得出了斜拉索發生參數共振的可能，然後建立了斜拉拱橋拉索-橋面耦合參數振動模型，即索-梁組合結構模型，推導了索-梁組合結構非線性運動方程，利用多尺度方法研究斜拉索的參數共振和亞諧波共振，並對穩態解的穩定性進行了分析。 -
Based on the previous research results, the author takes nonlinear temperature load equivalent to linear temperature load and calculates temperature stress by fem. it analyses the whole and the part temperature effect on rigid - framed arch bridge and compares different thermal stress of different bridge structure by the simplified methods. the research offer advices for this new style bridge
本文在總結前人工作的基礎上，分析探討將非線性溫度荷載等效為線性溫度荷載，同時採用有限元計算溫度應力的簡化方法；並利用這種計算方法對剛架拱橋的整體和局部的溫度效應以及不同橋型溫度效應的不同進行了分析比較，為這種新橋型的工程設計提供參考，還通過實測結果驗證上述方法的正確性，並進行了修正。 -
This paper uses arch model method in econometrics to set up an auto - regression model with different variance characteristic, which catches to the signal of herd behavior that can be comparatively sensitive. basing on the sample stocks of the index 180 of sse for studying sample, author conduct empirical tests on the non - linear relations between csad ( cross - sectional absolute deviation of returns ) and the market returns to judge whether the herd behavior in the stock market of china is remarkable. according to the empirical analysis, author finds, both in the up - market and down - market, certain herd behavior exist on the stock market of our country
本文運用計量經濟學中的arch模型方法，建立了一個能較為敏感的捕捉到羊群行為信號的具有異方差特性的自回歸模型，以上證180指數樣本股為研究樣本，通過檢驗個股截面收益的絕對偏差（ csad ）與市場組合收益的非線性關系，來判斷我國股市羊群行為是否顯著，通過實證分析，我們發現，無論是市場上漲階段還是下跌階段，我國股市都存在一定的羊群行為，同時，本文通過比較分析，對實證結果進行深入的剖析，對羊群行為的形成原因進行簡要的分析，並對如何控制羊群行為提出了一些政策性建議。 -
A linear programming model for the shape optimization of arch dams is established to minimize the maximal tensile stress of the arch dam
摘要以最大主拉應力最小作為目標函數，建立了拱壩體型優化設計的線性規劃模型。 -
Abstract : in this paper, a new simple method is put forward to on - line survey and analyse the real - time response of bridges loaded under random vehicles and people. based on linear elastic hypothesis and finite element method, the dynamic whole displacement state and load of the bridge can be obtained through surveying partial displacements, so the problem that load is unknown and difficult to determine when calculating is solved in a sense. this method is adap ted to girder bridge, arch bridge, cable - stayed bridge and suspension bridge. through the instrumentality of ways and means in this treatise, a real - time system to survey and analyse a working bridge can be established
文摘:在線彈性假設基礎上，根據有限元理論和橋梁隨機車輛（行人）荷載的特點，討論並提出了一種通過監測部分位移，計算橋梁其餘位移和橋面荷載的簡化分析方法，解決了橋梁在隨機車輛（行人）荷載作用下的荷載確定問題，建立了動位移和等效節點荷載的有限元列式.該方法為橋梁結構的在線監測和實時分析提供了理論基礎，適用於連續梁橋、拱橋、斜拉橋和懸索橋等橋梁結構形式，具有實際應用價值 -
A multiobjective non _ linear programming method is used to study the optimization of joint closure temperature field for xiaowan arch da m, and the optimum joint closure temperature field of xiaowan arch dam is present ed
採用多目標非線性規劃方法對小灣拱壩最優封拱溫度場進行了初步的研究，給出了小灣拱壩最優的封拱溫度場 -
Accounting for the effects of imperfection and large displacement of arch, an approach for the stability analysis of arch bridge is presented ， and a program is developed to predict the nonlinear buckling of arch the elastic lateral stability of the jiefang arch bridge in guangzhou during the construction phases and operating periods after its completion is analyzed the results show that the effects of initial deflection and large displacements on the critical load of lateral stability are significant, and that once the initial deflection and large displacement are taken into account, the values of the safety factor are smaller than those obtained by linear buckling analysis
考慮拱肋初始撓度等缺陷的影響，採用桿系結構大位移分析的有限元方法，建立了拱橋非線性穩定的計算方法，並編制了相應的計算程序文中計算了解放大橋鋼管混凝土拱橋在施工階段及成橋后運營期間的彈性側傾穩定結果表明：考慮拱肋初始撓度和結構大位移影響后，拱橋的非線性側傾穩定安全系數比按線性穩定計算值低 -
This paper shows the linear model of time sequence and the arch model and finds that the garch model could describe the fluctuation of price in some degrees
文章給出了股票時間序列的線性模型和股票價格的自回歸條件異方差模型（ arch ） ，發現garch族模型在一定程度上能夠描述股價的波動情況。 -
And under the three load cases, the critical load of the cable - stayed arch bridge taking into account double nonlinearity is much smaller than taking into account linear elasticity or geometrical nonlinearity. therefore if we want to estimate the limit bearing capacity exactly, the double nonlinearity must be considered
在三種加載工況作用下，考慮雙重非線性的臨界荷載遠小於線彈性和僅考慮幾何非線性臨界荷載。因此，採用線彈性和僅考慮幾何非線性方法均會過高地估計結構的極限承載力，要準確評估出結構的極限承載力必須考慮雙重非線性。 -
To investigate the function of concrete slabs and the effect of concrete construction on narrow composite space truss flat arch bridges, and to compare the results of linear analysis with the results of nonlinear analysis, finite element analysis of a typical engineering is undertaken
摘要為研究混凝土面板的作用以及混凝土施工對窄扁拱形組合網架橋的影響，比較線性與非線性分析結果之間的差別，對一典型工程進行有限元分析。 -
At last, on the basis of the linear finite element model, the effect of different factors such as the stiffness of the arch rib, the arrangement form and the arrangement position of the lateral brace, the sloping angle of arch ribs, ratio of the width to the span, the form of the hangers, the stiffness of bridge decks, cables etc is discussed
最後，本文還通過有限元模型的分析，就拱肋自身剛度、橫撐的布置形式和布置位置、拱肋內傾角、寬跨比、吊桿形式、橋面剛度、斜拉索等方面對該橋的整體穩定性的影響展開討論和研究。
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