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concrete
混凝土
Study on Basic Problems in Quality Evaluation of Concrete Structure with Aging Disease and in Bonding Reinforcement 老化病害混凝土结构质量评估及粘结加固中的基础问题研究 短句来源 Study of damage for concrete under temperature 混凝土温度损伤模型研究 短句来源 A New Type of Grouting Liquid of Stable Grout And Hydraulic Concrete with Compound Admixture 稳定灌浆新型浆液与复合掺合料水工混凝土 短句来源 Study on Low-hot High Performance High Belite Cement Large Dam Concrete 低热高性能高贝利特水泥大坝混凝土的研究 短句来源 The Structural Design of Overflow Concrete Face Rockfill Dam 溢流混凝土面板堆石坝结构设计研究 短句来源 更多 砼
A FINITE ELEMENT METHOD IN INVERSE ANALYSIS OF E_(cr) AND α_(cr) OF CONCRETE DAMS 有限元法反演坝体砼平均弹性模量E_(cr)和热膨胀系数α_(cr) 短句来源 ANALYSIS OF NONELASTIC DEFORMATION AND AVERAGE ELASTIC MODULUS OF DAM CONCRETE 非弹性位移量及坝体砼的平均弹模值分析 短句来源 THE NUMERICAL ANALYSIS OF THE WHOLE COURSE EMULATION OF THE TEMPERATURE FIELD AND STRESS FIELD OF CONCRETE DAMS 砼坝温度场与应力场全过程仿真数值分析 短句来源 The Application of Roller Compacted Concrete in Geheyan and Wan' an Projects 碾压砼在隔河岩和万安工程上的应用 短句来源 Analysis of the Operating Behavior of Concrete Dam of the Danjiangkou Hydro-junction 丹江口水利枢纽砼大坝工作性态分析 短句来源 更多 钢筋混凝土
Program Development and Application for Hydraulic Reinforced Concrete Structures Based on Commercial Software 基于通用软件的水工钢筋混凝土结构程序开发与应用 短句来源 Study on the Explosive Damage and Emergency Repair Technique of the Pile Wharf with Reinforced Concrete Plate and Beam 钢筋混凝土桩基梁板码头爆炸毁伤及抢修技术研究 短句来源 FIELD EXPOSURE TEST OF TEN YEARS FOR THE DURABILITY OF REINFORCED CONCRETE IN HARBOR ENGINEERING 港工钢筋混凝土耐久性现场暴露十年试验 短句来源 A STUDY ON COMPUTATION METHOD FOR TEMPERATURE STRESSES IN OPEN REINFORCED CONCRETE 外露式钢筋混凝土压力管道温度应力计算方法探讨 短句来源 The 3-dimensional Dynamic Analysis of Concrete Facing Rockfill Dam by Nonlinear FEM Including Water-dam Interaction 钢筋混凝土面板堆石坝三维非线性有限元动力分析 短句来源 更多 混凝土的
Study on Low-hot High Performance High Belite Cement Large Dam Concrete 低热高性能高贝利特水泥大坝混凝土的研究 短句来源 Research on Preparation, Structure and Performance of Ultra High Strength High Performance Concrete 特超强高性能混凝土的制备及其结构与性能研究 短句来源 The Parameters of Vibratory Compaction for Roll Compacted Concrete 碾压混凝土的振动压实参数 短句来源 Dsformation characteristics of hydraulic concrete 水工混凝土的变形特性 短句来源 Cooling of Concrete Filled in the Broad Slot Joint 宽缝回填混凝土的散热计算 短句来源 更多 
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We give some concrete examples of MRA wavelet sets in the plane.
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The main result provides a concrete method of connecting certain pairs of wavelet sets.
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For the S1 we exhibit concrete examples of admissible Gabor atoms which are very closely related to uncertainty minimizing states.
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And some concrete fuzzy functions demonstrate our conclusions.
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Using the general model and a two-stage fusion strategy presented in this paper, a concrete multimodal VAD system is built.
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In this Paper,the important problems of temperature stresses in arch dams are analyzed. Firstly,we consider the transient elastic three dimensional temperature stresses.It is pro- posed to cut the dam into horizontal and vertical systems,compute the stresses and dis- placements arisen therein by the nonlinear temperature distribution on the assumption of Plane section of Bernoulli-Navier,then adjust the displacements of the horizontal and ve- rtical systems by the so called trial load method.Some tables are... 本文对拱坝温度应力的几个主要问题进行了研究。全文分为三部分,第一部分研究拱坝瞬时弹性温度应力的计算问题,建议把伯努里-纳维埃关于断面在变形后保持为平面的假定与试荷载法相结合来解决拱坝温度应力的空间问题,并提供了计算公式和图表,以便利计算。对厚拱坝的应力分析提出了一个简捷的近似处理方法。对温度折算成静水压力计算的方法进行了评述,指出了它的缺点。第二部分研究混凝土徐变对拱坝温度应力的影响,我们引用马斯洛夫教授关于混凝土徐变的积分方程来分析外界温度按简谐变化时的温度应力问题,得到了一个方便的计算公式。第三部分研究拱坝灌缝时的过度冷却对降低温度应力的效果问题,也建议了一个计算方法。 文摘来源 In recennt years field tests have shown that the moduli of elasticity of rock foundation E_(OC) are generally not greater than those of concrete E_σ.When E_(OC)=E_σ, the coefficients of foundation restraint R are given in the following table,as shown by photoelasticity experiment. Coefficient of Foundation Restraint R (When E_σ=E_(OC)) y=height of the point in consideration. L=length of the block. When E_B≠E_(OC),R may be computed hy the following semi-empirical formula: R'=(1.82R)/(1+0.82(E_σ)/(E_(OC... 大体积混凝土坝的散热问题是如何解决大型水利枢纽建设速度的关键问题之一。本文从温度应力的观点说明考虑到基础变形、早期压应力、徐变及塑性变形等因素,注块的允许温差可以较目前采用的数值适当提高。再加上充分利用低温季节,大量埋入块石,沿主应力做斜缝及人工冷却等技术措施,便有可能大大加快混凝土坝的建筑,使我国水利水电建设的速度发生一个飞跃。 文摘来源 It is an efficient way to study arch dams by structural model tests, especially when the valley is unsymmetrical or is surrounded with a complicated boundary. This paper describes the course of the studies of a high, double-curvature, thin-concrete arch dam by structural model tests. The dam is located on an unsymmetrical valley with steep canyon walls. Through several stages of studies and repeated modifications the dam is presented to be five-curvature. arches in the horizontal planes in order to d... 结构模型试验为研究拱坝应力的有效途径。本文所述乃利用结构模型试验方法进行国内其拱坝的应力研究，藉以改善该拱坝的设计。根据计算及试验结果对拱坝进行了四次修改，按合力线与中轴线重合以减少梁拱断面弯矩的原理将拱圈布置成多心圆，并采用砼垫座的方法将坝体修改成为左右对称，有效地改善了坝体应力。根据试验所得应力成果用壳体理论反算出中间梁断面处之外荷载以兹校核，结果与上水荷载甚为吻合。 文摘来源 << 更多相关文摘 
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