拱形壩 的英文怎麼說
中文拼音 [gǒngxíngbà]
拱形壩
英文
arch dam-
According to this, the temperature field stress field and autogeny body - expand - deformation field of yangchun arch dam during construction arid operation period are analyzed, thus many significant conclusions are got for reference
由此,模擬分析了陽春拱壩施工期和運行期溫度場、自生體積膨脹變形場及應力場,得到了一些有參考意義的結論。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。Because of limit that invisibility and discommodious in anciently program, based on the method of limited rigid body equilibrium, using visual program language vb and connect autocad, realize plane and solid programme of abutment analysis of arch dam, provide alternation interface for designer. presently, our country constructing and will construct high 300m arch dam, it is important to judge security based on nonlinear fem analysis. basic theory of nonlinear fem analysis and its realization in ansys were studied
針對傳統程序的存在問題,非直觀、不易操作特點,以剛體極限平衡法為基本分析方法, visualbasic作為操作平臺,結合autocad圖形軟體,完成了剛體極限平衡法二維、三維壩肩穩定分析程序設計,使之具有直觀性,可視性、易操作性,為設計人員提供了具有友好界面的工程使用軟體目前我國西部在建和將建一批300m級的高拱壩,運用有限元方法計分析拱壩穩定性、評判大壩安全度十分有必要。Combined with practical data of shannxi lin hekou hydropower plant, the temperature filed of m and n schemes during construction and operation are simulated and analyzed. the isoline map of stable temperature field of the arch crest girder section and the vertical section in the center of arch dam, the isoline map of unstable temperature field of the arch crest girder section and the vertical section in the center of arch darn during construction and operation and the maximal and minimal temperature value during construction and operation are provided. the distribution law of temperature in the dam and the form reason of high - temperature zone are analyzed and the effect and feasibility of cooling and the zone of cooling are discussed
結合陜西藺河口水電站工程實際資料,對m方案和n方案溫度場進行了施工期和運行期全過程模擬計算分析,給出了拱冠梁剖面和壩體中心縱剖面準穩定溫度場等值線圖以及施工期、運行期拱冠梁剖面和壩體中心縱剖面非穩定溫度場等值線圖,提供了施工期逐月和運行期每年最高、最低溫度等成果,分析了壩體溫度分佈規律以及高溫區形成的原因,並探討了預埋冷卻水管的效果和可行性以及預埋冷卻水管的區域。Based on the discuss of the geologic environment of the high slope of spandrel groove jinping i hydroelectric power station. and the engineering geological conditions of rock mass are carefully studied in the paper. the modified csmr are adopted to perform the classification of the slope rock mass, the results of which are combined with the macroscopic stability of the high slope. on the basis of these, the methods of geological diagnosis and the finite element analysis are applied to analyze and compute the overall stability of the high slope
本文在闡明錦屏一級水電站壩區巖體的形成和演化特徵的基礎上,詳細研究了拱肩槽高邊坡巖體的結構特徵及岸坡巖體淺表生改造特徵,建立了岸坡巖體淺表生改造與岸坡演化模式,分析研究了巖體的物理力學性質,採用修正的csmr法對拱肩槽高邊坡的巖體質量進行分級研究,在此上基礎之上,採用地質分析判斷和有限元分析等方法,對高邊坡整體穩定性進行了系統分析、計算與評價;應用塊體理論對高邊坡的局部穩定性進行了分析計算,確定局部不穩定塊體的規模、出露范圍,從而對拱肩槽高邊坡的局部穩定性有了系統全面的認識和了解。According to the geometrical characteristic of the arch dam shape, and based on the parameter design language of ansys software ( apdl ), the subp method and the stochastic search method are adopted together to optimize design of hyperbolic arch dam with variable thicknesses of the circle
摘要根據拱壩體形的幾何特徵,基於ansys軟體的參數化設計語言( apdl ) ,將零階近似方法和隨機搜索法結合起來對單圓心變厚度雙曲拱壩進行了優化設計。Because its complex of mechanics characteristic, shape of geometry and boundary condition, safety of the high arch dam under normal load is what engineers are concerned about
因其受力特徵、幾何形狀、邊界條件等均較復雜,所以,高拱壩在正常荷載作用下的安全度,無疑是工程設計人員所關心的主要課題。Because of the difference of shape character and function between arch dam and gravity dam, the effect of loads, such as seepage pressure and gravity in arch dam, is smaller than that in gravity dam, but, the thermal load and dam contraction are turned into main loads
由於拱壩的體形特點和工作原理與重力壩不同,所以在拱壩中滲透壓力與重力等作用荷載的影響要比在重力壩中小,而溫度荷載及壩體混凝土收縮則上升為主要荷載。Abstract : the scour process at the rear apron of shimen dam is studied through review of operation practice and inverse operation experiments. the cause of scour is explained, the scour pot was not stable after the occurence of extreme flood with the return period of 300 years, and the flood may deepen the scour pot even more severe
文摘:通過長期實踐和反演試驗,研究了石門拱壩投運26年來壩后沖刷坑動態發展的全過程,解釋了其形成的主要原因,並指出重現期300年的特大洪水發生后,石門沖坑並未穩定,小於它的洪水仍舊造成了更深更危險的沖刷。The scour process at the rear apron of shimen dam is studied through review of operation practice and inverse operation experiments. the cause of scour is explained, the scour pot was not stable after the occurence of extreme flood with the return period of 300 years, and the flood may deepen the scour pot even more severe
通過長期實踐和反演試驗,研究了石門拱壩投運26年來壩后沖刷坑動態發展的全過程,解釋了其形成的主要原因,並指出重現期300年的特大洪水發生后,石門沖坑並未穩定,小於它的洪水仍舊造成了更深更危險的沖刷。A bearing surface transmits the interaction between an arch dam and its foundation, the strength of which directly affects the constraint of the bedrock to the dam, and thus affects the stress and deformation of the dam. the influence is studied in this paper with nonlinear finite element method, as an example, for a high arch dam in design. the results show that the influence on stress is only limited within the local area near the bearing surface, larger on the maximum principal tensile stress than on the principal compression stress, and the decrease of the strength does not cause unlimited increase of the maximum stress. the influence on the displacement of the top of the dam is smaller than that of the bottom of the dam, especially the relative downstream displacement. at the lower strength of the bearing surface, the relative downstream displacement at the bottom of the dam increases with the decrease of the strength
建基面是傳遞拱壩和基巖相互作用的紐帶,它的強度直接影響基巖對壩體的約束,從而影響壩體的應力和變形.採用非線性有限單元法,以設計中的某高拱壩為例,分析建基面強度對壩體應力和變形的影響.結果表明建基面強度對壩體應力的影響僅限於建基面附近的局部范圍,對最大主拉應力的影響要大於對最大主壓應力的影響,建基面強度的降低不會無限地增大壩體的應力數值;建基面強度對壩頂位移的影響較小,但對壩底位移(尤其是順河向相對位移)的影響較大,當建基面強度較低時,壩底順河向相對位移隨建基面強度的降低而增大The pilot study of causes of cracks in puding rcc arch dam
高碾壓混凝土拱壩分縫形式及破壞機理研究Auto - measurement method of huge arc - dam poly - distortion observation
大型拱壩多維變形自動觀測方法研究A finite element numerical model for arch dam - gravity pier - foundation system was established to evaluate the effect of high gravity piers on the stress, deformation and anti - sliding stability of sizhai arch dam, taking the following factors into account, such as the possible elastoplastic deformation of foundation rocks and the nonlinear interaction between the interfaces of gravity pier - dam foundation, the joint surfaces beneath the right bank, and the interfaces of arch dam - gravity pier
摘要為評價高重力墩對四寨拱壩的應力變形和抗滑安全的影響,建立了拱壩重力墩地基系統的有限元數值模型,其中考慮重力墩基礎、右岸夾層和拱壩重力墩等交界面的非線性相互作用,以及基巖材料的彈塑性變形行為。The program is applied to solve the optimization design of jiang kou arch dam
編制的程序應用於工程實踐,解決了江口混凝土拱壩體形優化設計的問題。Usually, there are many cracks in dam body during construction period and operating period. how to simulate process of cracks " formation and development reasonably and effectively is a problem
拱壩在施工期和運行期經常會出現裂縫,如何合理、有效地模擬裂縫的形成和發展過程是一大難題。3. based on the topography and geologic character of niutoushan arch dam abutment and base, and the interlayer and internal faults, which control the stability of the project, we build the three - dimensional geomechanical model and carry out the upto failure test by overload method. 4
結合牛頭山拱壩壩肩壩基的地形、地質特徵,以及對穩定起控製作用的層間、層內斷層的分佈狀況,建立了三維地質力學模型,運用超載法對整體模型進行了破壞試驗。The visualization theory and parameterization technique for fem, and secondary developing technique for ansys were studied. the parameterization principle for fem modeling of arch dam and the implementation technique were introduced. by fully using of the powerful graphic functions of autocad and of the secondary developing techniques provided in ansys, such as uidl, apdl etc, a fem simulation analysis system of arch dam based on ansys was developed, by means of which arch dams on complex foundation can be modeled and analyzed conveniently
首先,研究了有限元中的可視化理論、參數化技術和ansys軟體的二次開發技術,介紹了拱壩有限元可視化建模的參數化原理和實施技術,以ansys為平臺,並結合autocad軟體強大的圖形處理功能,利用ansys提供的uidl 、 apdl等二次開發技術,開發了具有水工特色的拱壩模擬分析系統,利用它可較方便地對復雜地基上的拱壩進行有限元建模和模擬分析。One concrete arch dam with mgo admixture in guangdong province was regarded as an example in this paper. the arch dam ' s deformation characteristic was studied
本文以廣東某外摻mgo混凝土拱壩為例,研究分析了外摻mgo混凝土拱壩的變形性態。Using the new numerical model for reinforced joint with consideration of the bond and slip between reinforcing bars and surrounding dam concrete, the 3d fem nonlinear analysis for 292m high xiaowan arch dan under design load working conditions of earthquake was conducted, and the effects of different kinds of reinforcement on stress, slip and transverse joint openings were studied
摘要利用考慮橫縫及跨橫縫鋼筋滑移的拱壩動力非線性模型,對設計地震荷載工況下的小灣拱壩進行了三維動力非線性有限元分析,研究了不同配筋率分佈對跨縫鋼筋的應力、滑移量及其控制橫縫變形的影響。分享友人