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high concrete dam     
相关语句
  高混凝土坝
     Calculation Methods and Design Criteria for High Concrete Dam
     高混凝土坝设计计算方法与设计准则
短句来源
     Flood Release and Energy Dissipation study for High Concrete Dam
     高混凝土坝泄洪和消能的研究
短句来源
     Comparison of Two Typical Key Layouts of High Concrete Dam Hydro-Junctions
     高混凝土坝两种典型枢纽布置型式比较
短句来源
     Guanyinyan hydroelectric station as a main point which links up as the Yangtze River middle reaches and the downstream water, will construct on the bedded rocks body which soft and hard rock alternate with, also the layers are multitudinous, gage distortion,has not constructed the high concrete dam in the domestic and foreign hydroelectric station construction on this kind of dam base before.
     观音岩水电站作为金沙江中游与下游河段相衔接的大型水电工程,将修建在一套软硬相间的层状岩体上,且层位众多,厚薄不一,在国内外水电建设当中尚无在此类坝基上修建高混凝土坝的先例。
短句来源
  混凝土高坝
     Stress,Stability,New shape and New Construction of High Concrete Dam
     创新研究群体:朱伯芳 张国新 许平 杨波 董福品 陈重华 陈平 黄淑萍 胡平 杨萍 研究方向:混凝土高坝的应力、稳定和新体形、新结构
短句来源
     Herein, the coupling method of deformable distinct elements with two nonlinear fracture mechanics models-smeared and discrete crack models is presented and applied to analyze the fracture and collapse of high concrete dam. The main contents are summarized as below:
     据此,本文系统研究并初步实现了变形体离散单元法与弥散裂缝模型和分离裂缝模型两种非线性断裂力学模型的耦合,并应用于混凝土高坝的断裂与破坏过程的工程分析中,主要研究内容包括:
短句来源
     Through finite element calculation,the paper analyses and evaluates the conditions of stabili-ty,stress and deformation for building a high concrete dam on low elastic modulus rock strata ofGuxian dam foundation. It also discusses the issues of deep slide,friction coefficient and control-ling index for allowable displacement.
     通过有限元计算,对故县工程坝基低弹模岩层修筑混凝土高坝的稳定、应力、变形条件进行分析评价,并探讨深层滑动、摩擦系数、允许变位控制指标值等问题。
短句来源
     As there are 100-200 layers. in a high concrete dam, it is difficult to compute the stresses in the dam simulating the process of construction.
     混凝土高坝往往有一二百层,仿真应力分析的计算量十分庞大。
短句来源
  高砼坝
     Construction alternatives and general layout for high concrete dam in valley area influence greatlyto construction period and cost for a project.
     峡谷地区高砼坝施工方案及施工总布置问题对工程施工建设工期及造价影响极大。
短句来源
  “high concrete dam”译为未确定词的双语例句
     Probability Evaluation of Cataclastic Rock Mass Used for High Concrete Dam Foundation
     碎裂岩体用作高混凝土重力坝坝基的可能性评价
短句来源
     This article embarks from the dam foundation rock project characteristic, constructed the high concrete dam to the Guanyinyanyan foundation rock to be suitable the nature to conduct the research.
     本文从坝基岩体的工程特性出发,对观音岩坝基岩体修建高混凝土重力坝的适宜性进行了研究。
短句来源
     On the basis of comprehensive analysis on flood release and energy dissipation design experiences of high concrete dam at home and abroad the design principles and energy dissipation methods for ? ? flood release of high concrete dam are discussed.
     在综合分析国内外高混凝士坝泄洪消能设计经验的基础上,全面论述了高混凝士坝泄洪消能的设计原则和消能方式。
短句来源
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  high concrete dam
Further, attention should be paid to the research on the failure modes and criterions of high concrete dam failure analysis and safety evaluation, and the effect of uncertainty and classification of safety should be considered too.
      
This paper involves the main contents and mechanical features of the safety analysis on high concrete dam and shows the current state and progress of the analysis methods.
      
Without any exiting specification or successful experiences of concrete dams up to 300 m at home and abroad for reference, experts feel obliged to figure out how to perform safety analysis on high concrete dam.
      
Research advance in safety analysis methods for high concrete dam
      


For the fact that the growing number of high concrete dams built in valley, the promblems existing in the dissipation of flow energy become more and more significant. Mechanism of energy dissipation of diffusion by sky-jump is discussed in this paper by means of turbulence theory and test. From the discussion such a conclusion can be arrived at that the essential of energy dissipation of diffusion are actions due to turbulence and due to entrained air. In addition, ways in which the effect of energy dissipation...

For the fact that the growing number of high concrete dams built in valley, the promblems existing in the dissipation of flow energy become more and more significant. Mechanism of energy dissipation of diffusion by sky-jump is discussed in this paper by means of turbulence theory and test. From the discussion such a conclusion can be arrived at that the essential of energy dissipation of diffusion are actions due to turbulence and due to entrained air. In addition, ways in which the effect of energy dissipation of diffusion can be improved are proposed.

本文结合实验结果,应用紊流理论对挑流扩散消能机理进行了讨论。认为扩散消能的本质,是由紊动粘性耗散,以及掺气气泡滞后所引起的附加能耗所构成。此外,文中还指出了增强扩散消能效果的途径。

Risk analysis for the hydraulic design of engineering project is a new problem for hydraulic engineers all over the world. A risk computation model is given in the paper. The major concern of the paper is to show how hydrologic and hydraulic uncertainties can be analysed and how flood relief risk of high concrete dams can be computed. The JC method used widely in structural risk computation is introduced into hydraulic risk computation, which is more convennient and practical than other methods which is...

Risk analysis for the hydraulic design of engineering project is a new problem for hydraulic engineers all over the world. A risk computation model is given in the paper. The major concern of the paper is to show how hydrologic and hydraulic uncertainties can be analysed and how flood relief risk of high concrete dams can be computed. The JC method used widely in structural risk computation is introduced into hydraulic risk computation, which is more convennient and practical than other methods which is now being used in hydraulic risk computation. In order to illustrate flood relief risk computation for high concrete dams, some large hydro-power projects are taken as examples. The results show that, the flood relief risk value of high concrete dams in our country is about 10~(-5), it coincides with results by other researchers abroad. The computing method and results provide reference for safety inspection and design of high concrete dams.

本文提出了混凝土高坝泄洪风险的计算模式,系统地分析了影响泄洪风险的不确定性及其随机变量,用JC法计算了国内一些混凝土高坝的泄洪风险,还对泄洪目标风险值进行了讨论.计算结果表明,我国混凝土高坝承担的泄洪风险大约为1O~5数量级,这与国外的研究结果是一致的.本文计算结果和分析方法可供我国高混凝土坝安全检查和工程设计时参考.

The tests on concrete fracture were carried out by using huge compact tension specimens with maximum dimensions 3.6×3.0×0.2m. Itwas found that the measured values of fracture toughness K_(IC) of concrete are independent of the sizes of the specimens when the height of the specimens are larger than 2m. Therefore, linear elastic fracture mechanics can be applied to stability analyses of cracks in mass concrete structures and to improving design methods of hydraulic structures. The results obtained...

The tests on concrete fracture were carried out by using huge compact tension specimens with maximum dimensions 3.6×3.0×0.2m. Itwas found that the measured values of fracture toughness K_(IC) of concrete are independent of the sizes of the specimens when the height of the specimens are larger than 2m. Therefore, linear elastic fracture mechanics can be applied to stability analyses of cracks in mass concrete structures and to improving design methods of hydraulic structures. The results obtained show that the parameter of fracture toughness of concrete K_(IC) can be taken as a fracture criterion for judging the stability of cracks in mass concrete structures, such as the high concrete dams.

本文采用最大尺寸为3.6×3.0×0.2m的巨型紧凑拉伸试件进行了混凝土断裂实验.发现当试件高度达到2m时,所测得的断裂韧度K_(IC)值与试件尺寸无关。因此线弹性断裂力学可以很好地应用于大体积混凝土结构的裂缝稳定性分析和改进水工结构的设计方法。研究结果表明,对于象高混凝土坝那样的大体积混凝土结构的I型裂缝评定问题,可以采用断裂韧度K_(IC)作为断裂准则。

 
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