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混凝土和岩石
相关语句
  concrete and rock
    The research result is successful in reflection of the physical mechanism of instability of the gravity dam induced by damage and softening of concrete and rock materials.
    研究结果反映了因混凝土和岩石材料的损伤及软化导致重力坝系统失稳的物理机制.
短句来源
    This paper presents nonlinear finite element analyses for the interaction of an arch dam and its foundation by using an elastic-plastic-fracture model describing the behaviors and three types of failures of concrete and rock.
    本文采用弹塑性——断裂模型描述混凝土和岩石类材料的性态以及开裂、压毁和混合型三种破坏模式。 用弹塑性增量有限元法进行拱坝和地基的相互作用分析。
短句来源
    This analytical method is able to reflect the physical mechanism of concrete gravity dam system if unstable state is occurred due to damage or softening of concrete and rock.
    这种方法能反映因混凝土和岩石材料损伤和软化导致重力坝系统失稳的物理机制 ,使分析建立在一个严谨的力学基础之上 .
短句来源
  “混凝土和岩石”译为未确定词的双语例句
    Based upon the artificial neural networks ,the elastic moduli of the concrete dam and the rock foundation are identified according to the horizontal displacements of the concrete dam in the Yunfeng projects.
    基于人工神经网络方法 ,根据云峰大坝坝顶水平位移观测资料识别大坝混凝土和岩石基础的弹性模量 .
短句来源
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  concrete and rock
Then, the analytical expression for volumetric strain was verified by comparison with two earlier experimental results for concrete and rock.
      
This is necessary for porous media such as concrete and rock which show at high pressure a significant deviation of the real effective stresses from those calculated with von Terzaghi's concept due to the compressibility of the true material.
      
Scaling phenomena due to fractal contact in concrete and rock fractures
      
The machine opens new horizons in testing the constitutive and fracture properties of concrete and rock.
      
An apparatus specifically designed for static and cyclic testing of concrete and rock cylindrical samples is described.
      
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This paper presents nonlinear finite element analyses for the interaction of an arch dam and its foundation by using an elastic-plastic-fracture model describing the behaviors and three types of failures of concrete and rock. The loading criterion in strain space is adopted, and an incremental changeable Kp method is proposed for the nonlinear iteration. The NAFA program compiled by the authors is introduced.

本文采用弹塑性——断裂模型描述混凝土和岩石类材料的性态以及开裂、压毁和混合型三种破坏模式。用弹塑性增量有限元法进行拱坝和地基的相互作用分析。加载准则在应变空间中构造。非线性迭代采用本文提出的子增量变K_p法。所编制的NAFA程序,能够进行拱坝的热弹塑性分析和一般材料非线性结构的有限元分析。

Based upon the artificial neural networks ,the elastic moduli of the concrete dam and the rock foundation are identified according to the horizontal displacements of the concrete dam in the Yunfeng projects. The precision of the estimated parameters and convergence are enhanced by the optimum of the iteration step size and handling in advance for the observed data. The practical application to the concrete dam in the Yunfeng projects indicates that the parameter identification algorithm proposed by this paper...

Based upon the artificial neural networks ,the elastic moduli of the concrete dam and the rock foundation are identified according to the horizontal displacements of the concrete dam in the Yunfeng projects. The precision of the estimated parameters and convergence are enhanced by the optimum of the iteration step size and handling in advance for the observed data. The practical application to the concrete dam in the Yunfeng projects indicates that the parameter identification algorithm proposed by this paper possesses higher identification accuracy, faster convergence, and the fitting error is less than 0.15 mm.

基于人工神经网络方法 ,根据云峰大坝坝顶水平位移观测资料识别大坝混凝土和岩石基础的弹性模量 .采用修正的BP学习算法 ,并通过对迭代步长的优化计算及对观测数据的归一化处理 ,提高了参数识别的速度和精度 .云峰大坝的工程实际应用表明 ,用神经网络方法识别材料参数具有识别精度高和收敛速度快等特性 ,拟合误差小于 0 .15mm .

Based on the elastic\|plastic increment theory the bearing capacity of concrete gravity dam is studied using stability and analytic method expressed in strain space. Criterion for stability of concrete gravity dam and foundation rock system is proposed. Two kinds of material strength margin are considered in the study. This analytical method is able to reflect the physical mechanism of concrete gravity dam system if unstable state is occurred due to damage or softening of concrete and rock. The calculation result...

Based on the elastic\|plastic increment theory the bearing capacity of concrete gravity dam is studied using stability and analytic method expressed in strain space. Criterion for stability of concrete gravity dam and foundation rock system is proposed. Two kinds of material strength margin are considered in the study. This analytical method is able to reflect the physical mechanism of concrete gravity dam system if unstable state is occurred due to damage or softening of concrete and rock. The calculation result indicates that the method is rational and feasible.

混凝土重力坝的承载能力是高坝设计中重要的研究课题 .本文根据应变空间表述的弹塑性增量理论 ,采用稳定性分析方法研究重力坝的承载能力 ,给出混凝土重力坝与坝基岩石系统失稳的判别准则 ,同时按两种不同的材料强度储备方式 ,研究重力坝的承载能力 .这种方法能反映因混凝土和岩石材料损伤和软化导致重力坝系统失稳的物理机制 ,使分析建立在一个严谨的力学基础之上 .计算实例表明 ,本方法可作为一个合理和可行的分析方法

 
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