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frictional resistant coefficient
相关语句
  沿程阻力系数
     It is suggested through analysis that when the cross section of plastic hose appears to be circular in shape, empirical equations of frictional head loss and frictional resistant coefficient are established.
     分析提出了薄塑软管断面呈全圆形时,管首工作压力一定和变动下的沿程水头损失及沿程阻力系数的经验公式。
短句来源
  相似匹配句对
     STUDY ON NON-ASBESTOS FRICTIONAL RESISTANT MATERIALS
     非石棉摩阻材料的研究
短句来源
     FRICTIONAL RESISTANT COMPOSITE-STUDY OF MODIFIED PHENOLICS
     摩擦材料基体——酚醛树脂改性研究
短句来源
     Frictional Vibration
     摩擦振动(一)
短句来源
     It is resistant to radiotherapy.
     放射治疗不敏感。
短句来源
     multiflrondis were resistant;
     multiflrondis为较抗病品种;
短句来源
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Experiments indicate that the flow state in polyvinyl plastic hose belongs to the turbulent flow in the smooth tube, whose differences from the general plastic rigid hose in water delivery capability are that the corss section of water flow changes with the service pressure. Therefore, the frictional head loss and frictional resistant coefficients not only depend on Reynold's nubers but also relate to discharge and diameter, being affected by pipe service pressure. It is suggested through analysis...

Experiments indicate that the flow state in polyvinyl plastic hose belongs to the turbulent flow in the smooth tube, whose differences from the general plastic rigid hose in water delivery capability are that the corss section of water flow changes with the service pressure. Therefore, the frictional head loss and frictional resistant coefficients not only depend on Reynold's nubers but also relate to discharge and diameter, being affected by pipe service pressure. It is suggested through analysis that when the cross section of plastic hose appears to be circular in shape, empirical equations of frictional head loss and frictional resistant coefficient are established. Through the tests, these equations can well meet the requirements of practical application.

试验表明,薄塑软管中的水流流态属光滑管紊流,它与一般塑料硬管在输水性能上的差别是:水流断面可随工作压力变化,因此其沿程水头损失和沿程阻力系数不仅取决于雷诺数,与其流量和直径有关,同时还受管首工作压力的影响。分析提出了薄塑软管断面呈全圆形时,管首工作压力一定和变动下的沿程水头损失及沿程阻力系数的经验公式。经验证,符合应用要求。

>=Basing on the Boussinesq theory and Mindlin theory of Elastic Theory, the additional stresses and deformations of a point in composite ground caused by the loads of foundation board, the loads of pile cap, the drag forces of pile end and the frictional resistances of soil around pile are presented in this paper. Under the condition of giving a series of initial frictional resistant coefficients of soil around the pile, the loads of pile cap, the drag forces of pile end and the frictional...

>=Basing on the Boussinesq theory and Mindlin theory of Elastic Theory, the additional stresses and deformations of a point in composite ground caused by the loads of foundation board, the loads of pile cap, the drag forces of pile end and the frictional resistances of soil around pile are presented in this paper. Under the condition of giving a series of initial frictional resistant coefficients of soil around the pile, the loads of pile cap, the drag forces of pile end and the frictional resistances of soil around the pile are calculated by using the method of iteration. Applied stress impose theory, the stress field of composite foundation can be calculated . The comparison of the settlements between calculated using the model given in this paper and measured on a composite foundation shows two results tally well.

由Boussinesq解和Mindlin解积分得到板底荷载、桩项荷载、桩底阻力和桩侧摩阻力在土体内任一点产生的附加应力。将桩体复合地基划分为若干土单元和桩身单元,在桩土接触面设置双曲线弹簧, 在给定一组初始桩侧摩阻力系数的条件下,运用迭代运算,计算得到刚性基础下桩体复合地基中板底荷载、桩顶荷载、桩底阻力和桩侧摩阻力。再运用应力叠加原理,得到复合地基中应力分布。运用该模型计算了某桥头引道复合地基沉降,计算结果与监测结果吻合良好。

 
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