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纵向曲线
相关语句
  vertical curve
     Vertical Curve Analysis of Conformal Die Cavity in Special-Shaped Extrusion
     异型挤压模腔纵向曲线共形解析
  longitudinal curves
     To reasonably design the longitudinal curves of cable saddles and improve the control precision in construction, the design of longitudinal curves composed of compound arcs was developed based on the analytical solutions for elastic catenary.
     为更加合理地设计悬索桥的鞍槽纵向曲线,提高悬索桥施工控制的精度,基于弹性悬链线的解析解,建立了具有复合圆弧曲线的鞍槽纵向曲线设计方法.
短句来源
  “纵向曲线”译为未确定词的双语例句
     Longitudinal Curve Design of Cable Saddles in Suspension Bridge
     悬索桥鞍槽纵向曲线设计
短句来源
     The saddle weight can be considered in the proposed elements,and the longitudinal curve of saddle can consist of two arcs with different radii.
     新单元可以考虑鞍座重量的影响,鞍槽纵向曲线可为复合圆曲线。
短句来源
     By numerical complex mapping theory, the mathematical models of three-dimension die cavity sur-face whose vertical curves are convex, linear and streamline are generated respectively for extruding special- shaped products.
     用复变映射效值解析理论,建立纵向曲线分别为凸型、直线型与流线型的挤压异型材模腔三维曲面的数学模型。
  相似匹配句对
     curve
     曲线
短句来源
     Longitudinal Curve Design of Cable Saddles in Suspension Bridge
     悬索桥鞍槽纵向曲线设计
短句来源
     ^^ METHODS TO IMPROVE THE VERTICAL RESOLUTION OF WELL LOGS
     提高测井曲线纵向分辨率的方法
短句来源
     Multiresolutiou Curves
     多分辨率曲线
短句来源
     On the vertical integration in vertical
     纵论纵向一体化
短句来源
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  vertical curve
Accomplish horizontal arid vertical curve alignmerits with bends, bevels, and joint deflections.
      
Each vertical curve is the level-dependent MAE for a particular stage, calculated at all valid synoptic times within the period.
      
Generally, the horizontal curvature should be introduced on the upgrade of the vertical curve.
      
Price is plotted along the vertical curve and the demand for cakes along the horizontal curve.
      
Street standards can also include reduced horizontal and vertical curve standards, and smaller corner radii.
      
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To reasonably design the longitudinal curves of cable saddles and improve the control precision in construction, the design of longitudinal curves composed of compound arcs was developed based on the analytical solutions for elastic catenary. Under the condition of given distances or horizontal distances between the turning point and the two tangential points on main saddle, or given arc radii of anchorage cable saddles, a nonlinear equation corresponding to a main saddle and two nonlinear equations corresponding...

To reasonably design the longitudinal curves of cable saddles and improve the control precision in construction, the design of longitudinal curves composed of compound arcs was developed based on the analytical solutions for elastic catenary. Under the condition of given distances or horizontal distances between the turning point and the two tangential points on main saddle, or given arc radii of anchorage cable saddles, a nonlinear equation corresponding to a main saddle and two nonlinear equations corresponding to anchorage saddle were respectively derived from equilibrium conditions and geometrical relations. The corresponding drawing method was proposed to each case. The result shows that it is easier to design a main saddle if the horizontal distances are given.

为更加合理地设计悬索桥的鞍槽纵向曲线,提高悬索桥施工控制的精度,基于弹性悬链线的解析解,建立了具有复合圆弧曲线的鞍槽纵向曲线设计方法.在拟定主索鞍处转点到两切点的距离或水平距离,或拟定散索鞍弧段半径后,根据索鞍的受力平衡条件及两圆弧段之间的几何关系,建立了求解主索鞍鞍槽纵向曲线的一元非线性方程及散索鞍的二元非线性方程组.对应每种鞍座的设计还建立了相应的高效作图法,指出主索鞍的设计以拟定转点到切点水平距离最简单.最后,为了证明公式的正确性,给出了1个算例.

In order to analyseis the erection of suspension bridge,the longitudinal curve of sliding cable saddle,assembled by arcs is first mathematically characterized.Based on the analytical solutions of elastic catenary,the method to analysis the cable span with two fixed ends is established,and finally the method to analyse cable span between two saddles is developd and is used to find the constructed state determined by controlling geometrical parameters,such as sag at middle span.Corresponding to the construction...

In order to analyseis the erection of suspension bridge,the longitudinal curve of sliding cable saddle,assembled by arcs is first mathematically characterized.Based on the analytical solutions of elastic catenary,the method to analysis the cable span with two fixed ends is established,and finally the method to analyse cable span between two saddles is developd and is used to find the constructed state determined by controlling geometrical parameters,such as sag at middle span.Corresponding to the construction state,by sliding the saddles to the equilibrium state,important parameters such as pre-displacements of saddles,sags of cable spans,tension of wire strands and positions of hanger bands can be valued,and used to guide construction.The weights of anchorage cable saddles,and the elastic displacements of the saddle backstop induced by construction of beam,can be considered in this analytical iterative method.Examples show this method is correct.Engineering example shows saddles with different longitudinal curves have less effect to statics results of the structural analysis,and neglecting the weight of saddles enlarges the tensile forces of wire strands at anchorage span.If it is used to guide the construction,the elevation would be higher than expected in design.

为分析悬索桥的主缆架设,首先建立了滑移式索鞍纵向复合圆曲线的数学描述方法,进而利用弹性悬链线的精确解,建立了两索鞍间索跨的分析方法,并用于确定由成桥几何控制参数确定的悬索桥成桥状态,随后通过移动鞍座寻找平衡位置,可得到空载时索鞍预偏量、各跨垂度、索股张力和索夹位置等重要参数。这种解析迭代法可以考虑散索鞍重量的影响,以及主梁的架设对索鞍支承面的弹性压缩。算例表明本文所建立的方法是正确的。工程算例还表明具有不同纵向曲线的索鞍对悬索桥结构的整体静力分析结果影响甚微,且忽略散索鞍的重量将使架设时锚跨侧索股的张拉力偏大。

To model saddles in finite element analysis of suspension bridges,one class of new finite elements were developed,including two-node left-saddle element and right-saddle element that model a cable segment fixed with saddle at one end respectively,and three-node saddle element that models a cable segment fixed with saddle at one point on the cable.The fixed point was selected to be one node in each element.The proposed elements simplify computations by automatically adjusting the departing points.The derivation...

To model saddles in finite element analysis of suspension bridges,one class of new finite elements were developed,including two-node left-saddle element and right-saddle element that model a cable segment fixed with saddle at one end respectively,and three-node saddle element that models a cable segment fixed with saddle at one point on the cable.The fixed point was selected to be one node in each element.The proposed elements simplify computations by automatically adjusting the departing points.The derivation of element formula is based on the principles of FEM and the analytical solutions of elastic catenary.The relation of the forces between cable and saddle at equilibrium are also used.The saddle weight can be considered in the proposed elements,and the longitudinal curve of saddle can consist of two arcs with different radii.The proposed elements can be incorporated into conventional finite element analysis.Examples demonstrate the accuracies and applications of the proposed elements.

为在悬索桥结构分析中精确模拟索鞍,建立了索段一端固定于鞍座上的两节点“左鞍座单元”和“右鞍座单元”,以及索段中一点固定于鞍座上的三节点“鞍座单元”,此固定点为新单元的一个节点。它们通过自动调整索与鞍座的切点而处于平衡状态,从而简化了计算。单元算法的推导基于有限元分析的基本原理和弹性悬链线的精确解,并利用了处于平衡状态时索与鞍座之间的内力关系。新单元可以考虑鞍座重量的影响,鞍槽纵向曲线可为复合圆曲线。新单元可以同常规单元一样直接用于索结构的有限元分析,设计的算例验证了其正确性,工程算例显示了其在悬索桥结构分析中的应用。

 
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