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反摩擦
相关语句
  anti-friction
    Simplified calculation of the friction loss and anti-friction loss of the prestressing tendon in concrete structures
    混凝土结构中预应力筋摩擦损失与反摩擦损失简化计算
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  “反摩擦”译为未确定词的双语例句
    And calculation of the antifriction loss by the China Code method is the same intricate as a result of assuming that the magnitude of the friction curve slope of each section equals to that of the antifriction curve and the direction is reverse.
    由于目前反摩擦损失计算的规范方法假定预应力筋各区段的反摩擦损失曲线斜率与正摩擦损失曲线斜率数值相等、方向相反,致使预应力筋反摩擦影响区长度lf及反摩擦损失的计算同样也十分繁复。
短句来源
    To solve these problems, after briefly reviewing the code method, a simple method (method Ⅰ) is developed on the basis of the linear expression of the friction loss. The magnitude of the friction curve slope equal to those of the antifriction curve of the prestressing tendon from stressing point to dead end and the direction is reverse.
    针对这一突出问题,在对现行规范方法进行简要回顾之后,基于预应力筋摩擦损失的线性计算公式,提出了将预应力筋在张拉端至锚固端全长范围内的摩擦损失曲线与反摩擦损失曲线均分别统一取为单一斜率直线,且仍沿用正反摩擦损失曲线斜率大小相等、方向相反假定的简化计算方法(法Ⅰ);
短句来源
    Moreover, method Ⅲ is presented in which the exponent expression of the friction loss between the stressing end and dead end is substiuted by a straight line between them.
    最后给出了将张拉端至锚固端预应力筋摩擦损失的指数曲线用连接二点的直线去替代,且仍沿用正反摩擦损失曲线的斜率大小相等、方向相反假定的简化计算方法(法Ⅲ)。
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  reverse friction
Investigation of exoelectron emission in reverse friction
      


The modern prestressed concrete construction enjoys prestige and many merits such as (1) saving of steel consumption, (2) enlarging the span of a structure member, (3)reducing the section size of a structure member and (4) promoting the serviceability of employ et al. Thus, it has been widely adopted in the building construction circles.As an inference from these facts and practices, in the 《Building Construction Handbook》, 3d ed., there are some supplementary compilations of prestressed concrete such as (1)...

The modern prestressed concrete construction enjoys prestige and many merits such as (1) saving of steel consumption, (2) enlarging the span of a structure member, (3)reducing the section size of a structure member and (4) promoting the serviceability of employ et al. Thus, it has been widely adopted in the building construction circles.As an inference from these facts and practices, in the 《Building Construction Handbook》, 3d ed., there are some supplementary compilations of prestressed concrete such as (1) prestressed steel strand, (2) tensioning and anchorage system of single strand,(3) special structure prestressed technology.

现代预应力混凝土由于可节约钢材 ,增大构件跨度 ,减少构件截面尺寸 ,提高使用功能而受到广泛应用。《建筑施工手册》第三版增补了超高强低松驰钢绞线、单根钢绞线张拉锚固体系、预应力筋孔道反摩擦理论、现浇预应力结构施工顺序、特种结构预应力技术等内容。

This article explains a simplified method of calculation for loss of prestress of a tendon due to draw in of anchorage counting counter friction of a sheath in various tensioning situation.

在各种张拉力场合下 ,考虑管道反摩擦的预应力钢筋回缩损失的简化计算。

As the summary of indications of the tangents of neighboring characteristic points (strssing point, inflection point and aim point) needs to be calculated in obtaining the friction loss and section slopes of the prestressing tendon are different, the calculation of friction is complicated. And calculation of the antifriction loss by the China Code method is the same intricate as a result of assuming that the magnitude of the friction curve slope of each section equals to that of the antifriction curve and...

As the summary of indications of the tangents of neighboring characteristic points (strssing point, inflection point and aim point) needs to be calculated in obtaining the friction loss and section slopes of the prestressing tendon are different, the calculation of friction is complicated. And calculation of the antifriction loss by the China Code method is the same intricate as a result of assuming that the magnitude of the friction curve slope of each section equals to that of the antifriction curve and the direction is reverse. To solve these problems, after briefly reviewing the code method, a simple method (method Ⅰ) is developed on the basis of the linear expression of the friction loss. The magnitude of the friction curve slope equal to those of the antifriction curve of the prestressing tendon from stressing point to dead end and the direction is reverse. Analyzing the phenomena that the result errors of method I are big in critical sections far from the stressing end, a modified method (method Ⅱ) is discussed for simplifying calculation. Moreover, method Ⅲ is presented in which the exponent expression of the friction loss between the stressing end and dead end is substiuted by a straight line between them. The analysis of the calculation results of these three methods are introduced, and calculation examples are included.

由于计算摩擦损失须确定从张拉端到所考察截面预应力筋各相邻特征点(如张拉端、反弯点、计算截面等)的切线夹角之和,同时由于预应力筋不同区段摩擦损失曲线的斜率不同,使得预应力筋摩擦损失计算较为繁复。由于目前反摩擦损失计算的规范方法假定预应力筋各区段的反摩擦损失曲线斜率与正摩擦损失曲线斜率数值相等、方向相反,致使预应力筋反摩擦影响区长度lf及反摩擦损失的计算同样也十分繁复。针对这一突出问题,在对现行规范方法进行简要回顾之后,基于预应力筋摩擦损失的线性计算公式,提出了将预应力筋在张拉端至锚固端全长范围内的摩擦损失曲线与反摩擦损失曲线均分别统一取为单一斜率直线,且仍沿用正反摩擦损失曲线斜率大小相等、方向相反假定的简化计算方法(法Ⅰ);在对应用法I计算远离张拉端控制截面预应力筋摩擦损失量值偏大这一现象进行分析之后,提出对法I的修正方法(法Ⅱ);最后给出了将张拉端至锚固端预应力筋摩擦损失的指数曲线用连接二点的直线去替代,且仍沿用正反摩擦损失曲线的斜率大小相等、方向相反假定的简化计算方法(法Ⅲ)。介绍了三种简化方法的计算分析结果,并附算例。

 
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