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跨径比
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  span ratio
     Numerical results show that the ideal span ratio is related to the support conditions. The ideal span ratios are given in five different cases.
     数值结果表明,多跨连续梁的最佳跨径比与支承条件密切相关,文中给出了5种跨径比限制条件下的最佳跨径比.
短句来源
     For the three-span continuous beam with two ends simply supported,there are slight differences between the bending moment in the case with equal spans and that in the case with ideal span ratio. 
     对于两端简支的三跨连续梁,等跨时梁的内力与最佳跨径比时梁的内力相差不大.
短句来源
  “跨径比”译为未确定词的双语例句
     (4) The ratio of spans is 0.5-0.7 commonly.
     (4) 三跨连续空腹式刚架拱桥的边中跨径比一般为0.5~0.7。
短句来源
     The results of experimental study and computer simulation demonstrate that the coupling degree of local denting and global deformation relates to ratios of diameter ( D ) to thick ( h ) and span (2 L ) to diameter ( D ).
     实验研究和计算机仿真结果表明 ,局部变形和整体变形的耦合与径厚比 (D/h)和跨径比 (2L/D)等因素有关。
短句来源
     The Effects of Spans on the Static Behavior of Indeterminate Multi-span Beams
     跨径比对超静定连续梁静力特性的影响
短句来源
     After changing the ratio of spans and the thickness of the walls of the double thin-wall pier, parameter analysis is processed under dead load and annual temperature change and sunshine temperature differential.
     然后,通过改变跨径比与墩梁刚度比设计基本参数,进行结构在自重荷载、年温度变化和日照温差三种荷载工况下的受力分析。
短句来源
     Increasing the ratio of side span to second middle span does good to the static behavior of the whole bridge. It is highly recommended that the ratio of side span to second middle span had better be chosen as 0.7 or so.
     (3) 增大边跨与次中跨跨径比,对全桥受力比较有利,本文建议取边跨与次中跨跨径比为0.7左右。
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  相似匹配句对
     In this paper,the writer proves the existence theorem of Nash-Mequilibrium points under the weaker conditions than D.
     本文在 D.
短句来源
     V. C higher than families G.
     V.C家系G.
短句来源
     The Optimization of Arch Shape with the Ratio of Short Width to Long Span
     小宽跨跨径拱的优化造型
短句来源
     The change of span length and ratio of side to main span influencing seismic resisting is advantage and drawback running concurrently;
     跨径和边中跨的变化,对桥梁抗震利弊兼半;
短句来源
     Disquisition on Limitation Span of Arch Dridge
     拱桥极限跨径研究
短句来源
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  span ratio
It was shown that the effect of the tensional cable is more evident at small rise-span ratio.
      
The results show that bending rigidity, vehicle speed, span ratio and primary frequency all have important influences on the dynamic characteristics of the guideway and there is no distinct trend towards resonance vibration when f1/(v/l) equals 1.0.
      
In the numerical study, where hundreds of cases were analyzed, the parameters considered included rise-span ratio, length-span ratio, surface load and member section size.
      
This paper also presents two single equations to estimate the minimum angle between the humerus and the body as well as the minimum span ratio of a bird in gliding flight.
      
(2) When the specimen had a high depth/span ratio, the bending strength increased with the increase in the radius of the loading nose.
      
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While the ratio between the width and the span of the girder bridge is less than 0.5

在桥宽与跨径之比小于0.5的桥跨结构中,一般认为桥梁横向挠曲线呈直线关系,则偏心受压法(或称刚性横梁法)得到广泛的应用。如果再考虑到主梁的弯扭藉合,则可推导出不同的偏心受压修正公式。理论与试验均证阴,横隔梁抗弯刚度远非绝对刚性,既使B/l≤0.5横向挠度也呈曲线(这里基本假定按两次抛物线变化规律)。而且在一般钢筋混凝土或预应力混凝土粱式桥中多采用T型或不对称I字型截面,梁自身抗扭能力不大相对于弯曲而言可以忽略不计,故可以不去考虑由于扭矩的修正。本文假定横向挠曲线,无论荷载作用位置如何均假定按二次抛物线变化规律,利用能量法及虚位移原理推导出偏心受压的修正公式(这里修正非直线的横向挠曲线的影响)。这将不仅适用于B/l≤0.5而且对于B/l≤1也可以采用,这样就扩大了修正式的适用范围,而代替计算较繁复的GM法及刚性梁法,而达到简单而实用的目的。

The concept of fractals has caught the imagination of scientists in many fields.It is adopted in the field of earthquake engineering in this paper.The transverse responses of cable stayed bridges and the fractal properties are analyzed,with two examples,considering the ratio of side span and main span,the rigidity ratio of beam and pier,the bearings,etc.It offers a reference for conceptional design of a bridge.

由于分形论深刻的理论意义和巨大的实用价值 ,分形论已被引入众多学科领域 .为此将分形的思想引入工程抗震领域 ,结合南京长江第二大桥南汊桥和杨浦大桥两个桥例 ,建立了有限元模型 ,考虑边跨主跨跨径比、梁墩刚度、支座单元等影响因素 ,分析结构横桥向地震反应及其分形特征 ,为概念设计阶段总体结构抗震性能的考虑提供参考

With two examples of Nanjing No.2 Bridge and Shanghai Nanpu Bridge, the transverse seismic response of cable-stayed bridges is analyzed in this paper, considering the ratio of side span and main span, the rigidity ratio of beam and pier, the bearings, etc. We hope the paper will work as a reference for consideration of the anti-seismic performance of the overall structure in the stage of conceptual design.

本文结合南京长江第二大桥南汊桥和上海市杨浦大桥两个桥例 ,建立了有限元模型 ,在考虑边跨主跨跨径比、梁墩刚度、支座单元等影响因素的情况下 ,分析了结构的横桥向地震反应及其变化特征 ,以便为桥梁概念设计阶段结构总体抗震性能的考虑提供参考。

 
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