elastic arch 中文意思是什麼
elastic arch
解釋
彈性拱-
The calculation modes of the coefficient of shrinkage and creep of the bulgy core concrete in steel tube are discussed. based on a few reasonable hypotheses and the stress - strain relation of concrete acquired by the " adjusting valid modulus depending on load time " method, a compact formula is reasoned out, which is applied to calculate the equivalent elastic modulus of the bulgy core concrete considering the affection of shrinkage and creep. so, the analysis of the affection on cfst arch bridge by shrinkage and creep can be progressed by pole - girder fem, further more, the analysis precision is quite high
本文還對核心膨脹混凝土特殊的收縮、徐變系數計算模式展開了探討，在合理的假設前提下，採用「齡期調整的有效模量法」得到的混凝土的本構關系，推導出鋼管內核心混凝土在考慮徐變影響后的等效彈性模量計算公式，並以此為基礎採用桿系有限元方法來對鋼管混凝土拱橋進行較高精度的收縮徐變分析。 -
In this article, according to heat conduction theory, elastic creep theory and finite element theory, the temperature field and creep stress field in the arch dam during construction and operation are simulated and analyzed by means of three dimensional finite element relocating mesh method, and the distribution law of the temperature field and creep stress field in the arch dam during construction and operation are systematically studied, and according to the construction process of concrete arch dam, the effect of lamination placement, construction interval, elastic modulus change, thermal insulation change, surrounding temperature change, concrete creep and autogenous volume change on thermal stress in the arch dam are also considered
論文根據熱傳導理論、彈性徐變理論及有限元理論，用三維有限元浮動網格法對拱壩施工期和運行期溫度場、徐變應力場進行了全過程模擬分析，較為系統的研究了混凝土拱壩施工期和運行期溫度場、徐變應力場的分佈規律，在分析中按照混凝土拱壩施工過程，考慮了混凝土分層澆築、施工間隙時間、彈模變化、絕熱溫升過程、環境溫度的變化、混凝土徐變、自生體積變形等因素對壩體溫度應力的影響。 -
In this method, the arch roof with corrugations is equivalent to orthotropic shells, and the equivalent elastic coefficients are determined by simplified calculating formula
在該方法中，將帶波紋的拱板等效成正交各向異性殼，板殼的等效彈性常數由簡化計算公式確定。 -
Based on the arch - cantilever method, the stability of arch ring and cantilever beam against elastic buckling in arch dams are analyzed with the theory of elastic stability, and the conclusion is drawn that the stability of arch dam against elastic buckling is governed by the top arch ring
按照拱梁分載法的思想，用彈性穩定理論分別對拱壩的拱圈和懸臂梁的抗屈曲穩定性進行了分析，得出拱壩的抗屈曲穩定性由壩頂拱圈控制的結論。 -
With the increase of lateral pressure modulus, the magnitude of principal stress decreases and the direction of it is hardly changeable ; with the increase of the angle between the direction of the maximal horizontal principal stress on magnitude and the fault bearing, the magnitude of principal stress increase and its direction can hardly change ; with the increase of the elastic modulus of rocks, the magnitude of principal stress increases and the direction changes more ; with the increase of pr, the magnitude of principal stress decreases and the direction changes more ; with the increase of lateral pressure modulus, the principal stress at hance, the tress at topmost arch, bottom arch and principal stress at lateral arch decreases, with the increase of the depth of tunnel, the stress of surrounding rock also increases, and the poorer the quality of surrounding rock is, the little its principle stress is
分析得出，隨著側壓力系數的增大，主應力量值減小，主應力方位難改變；隨著與斷層走向的夾角增大，主應力量值增大，應力方向難改變：隨著巖石的彈性模量的增大，主應力量值增大，方向變化越大；隨著泊松比的增大，主應力量值減小，方位變化越大。隨著側壓力系數的增大，頂、底拱處的各應力值增大，拱腰處的主應力減小，剪應力增大，側拱處的各主應力減小，同一側壓力系數的條件下圍巖質量越差，各應力值也越小；隨著洞室埋深的增加，圍巖壓力也增大，圍巖質量越差，其應力值也減小。 -
Abstract : this paper introduces the global stiffness, strength and stability of bracing structure with long span, pointing out that the control of bracing structure ' s deflection and elastic module can make the arch ring fit the line of pressure and arch axis and can guarantee the stability of bridge structure
文摘:本文介紹了大跨度支撐結構的整體剛度、強度和穩定性，控制支撐的撓度和彈性變量可使拱圈符合設計壓力線與拱軸線，保證橋梁結構的穩定性。 -
Research on elastic slab vibration of inverted arch plunge pool under high water head and large discharge
高水頭大流量作用下反拱水墊塘彈性單底板塊振動規律研究 -
Secondary bifurcation buckling behavior of elastic - plastic arch
拱結構的彈塑性二次分岔屈曲性能 -
Elastic stability behavior of a new type of pre - stress cable - arch structure
拱結構的彈性穩定性能研究 -
The results are important for dam base excavation and engineering disposal. ( 2 ) arch dam can be regarded as an elastic ground cantilever system composed of vertical cantilever, horizontal arch, and torsion structures. the dissertation takes the arch dam as load diversion system of arch - cantilevers system located on the ground composed of elastic cantilever
（ 2 ）將拱壩虛擬為由座落在壩基塊體有限元上的一系列懸臂梁與水平拱組成，將懸臂梁視作由水平拱所支承的彈性地基梁，考慮徑向和切向調整，比以往的彈性地基梁只考慮徑向調整有所發展；而且用塊體元模擬壩基，也能較精確地模擬壩基多種斷裂構造等對壩體結構行為的影響。 -
4 ) the lateral elastic stability of the arch rib with 3 - dimention fem program is analyzed, some influence factors such as suspender, arch rib and wind brace etc. are comprehended. the results may ensure the construction and be useful to designers
採用空間有限元程序分析拱肋的彈性穩定性，了解拱肋、風撐、吊桿等因素對穩定性的影響程度，以指導設計並確保施工安全可靠。 -
Thus, two 2d elastic finite - element models of tunnel are respectively established, both of which go through i wall - rock sector and wall - rock sector by means of large - scale finite element software ansys. thereby, the magnitude of wall stress, displacement, submergence of arch roof and terrestrial sedimentation in tunnels will be attained via numerical simulation of the whole construction process
通過運用大型通用有限元軟體ansys ，分別建立隧道穿越類圍巖地段和類圍巖地段的兩個二維彈塑性有限元模型，進行施工全過程的數值模擬，得到隧道中墻應力和位移以及拱頂下沉和地表沉降值。 -
3. this thesis analyses and contrasts the coefficient of creep of concrete filled steel tubes, develops the calculation formulas of equivalent elastic modulus, adopts common structure analyses procedure ansys to calculate the redistribution of section stress in the concrete filled steel tubes arch bridge
同時根據鋼管混凝土組合結構的受力特點，應用「齡期調整的有效彈性摸量法」推導出核心混凝土考慮徐變影響后的徐變等效彈性模量計算公式，從而利用通用有限元ansys進行鋼管混凝土拱橋的應力重分佈計算。 -
By adopting the calculating analysis method of elastic - plastic three - dimensional fem numeric simulation, this paper makes a simulation analysis on the structure stability of the shallow cover and unsymmetrically loaded parts in tongyoushan tunnel, mainly simulates the effects caused by different construction orders on surroundings and supporting structure stability, and it centers on the analysis on the weak part, the midwall in the lining of the connecting - arch tunnel
摘要採用彈塑性三維有限元數值模擬計算分析的方法，對桐油山隧道淺埋、偏壓地段結構穩定性進行了模擬分析，主要模擬了不同施工順序對圍巖及支護結構穩定性的影響，重點對連拱隧道整體襯砌中的薄弱環節中墻進行了分析。 -
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 -
With the support of the study above, this dissertation shows us the second - order analysis method of the elastic - plastic stability of steel arch gate
在此研究的基礎上給出弧形鋼閘門主框架彈塑性穩定性實用二階分析方法。 -
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 -
Stability coefficient of large span cfst arch bridge is less than that of considering the geometrical nonlinearity, its numerical value decreases approximate 12 % ; stability coefficient of large span cfst arch bridge taking into account geometrical nonlinearity and material nonlinearity is smallest, and the numerical value is about 45 % of elastic stability coefficient
拱肋的最大橫向位移為1 . 126米，說明對在該橋型運營實行監控檢測時，可以把雙重非線性分析所得的最大位移作為參考依據。幾何非線性對大跨度鋼管混凝土拱橋的穩定性影響較小。考慮幾何非線性后，穩定系數僅下降了12 。 -
The stability of arch dam against elastic buckling has always been ignored
摘要拱壩的抗屈曲穩定性一直是未被重視的問題。 -
Rib vertical displacement of nanpu cfst arch bridge is biggish, considering the geometrical nonlinearity and material nonlinearity, and the value is about 105 % of elastic result ; the horizontal displacement is biggish also, with the value is approximate 113 % of elastic result. if considering the double nonlinearity, the rib vertical displacement will increase approximate 10 % and horizontal displacement will increases approximate 22 %
幾何非線性和材料非線性對大跨度鋼管混凝土拱橋的拱肋跨中豎向位移的影響較小，對各拱肋跨中水平位移影響較大，約為13 ，考慮雙重非線性后，拱肋跨中豎向撓度增加10左右，水平位移增加約22 。
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