| 1. | The smaller the curvature and the larger the crack length the smaller will be the fracture stress .
曲线半径越小，裂纹长度越大，断裂应力也就越低。 |
| 2. | The model developed previously is used in calibrating the threshold value of both comfort level and convenience index of roadway alignment , and in developing safety analysis model for some existing black spots
本文在大量行车实验数据的基础上,分析得到如下成果: 1 )在平曲线半径上定性、定量的分析了加速度、速度与心率增长率的变化关系和模型。 |
| 3. | There are not definite code provision of evaluation of effective width about steel box - girder in many countries , especially curved bridge because its evaluation of effective width vary with the radius of the curve
目前许多国家对于钢结构箱形梁上翼缘有效宽度的取值都没有明确规定,尤其是曲线梁桥由于其有效宽度的取值受曲线半径的影响,其结构更趋复杂。 |
| 4. | In this paper , wheel - rail rolling contact creepages and creeps of independently rotating wheel are analyzed , the effects of lateral and yaw motions of independently rotating wheel , and the curve radius to creepages of wheel - rail rolling contact are emphasisatically researched . 4
论文对独立旋转车轮的轮轨滚动接触蠕滑率/力进行了分析，研究了轮对横移和摇头运动以及曲线半径对独立旋转车轮轮轨蠕滑率的影响情况。 |
| 5. | Based on geometry alignment data and speed difference , by stat . formula are established about the relation between downgrade , curve radius and deflection and speed change . then method to establish speed characteristic curve is present
依据样本路段的几何线形数据和速度变化特征，利用统计手段得出了纵坡坡度、平曲线半径和偏角等线形指标与速度变化之间的关系公式，根据这些公式，给出了一定线形组合求解速度特征曲线的方法。 |
| 6. | In our country , many railway lines which were built in mountainous area have heavy gradient and curves with small radius . so it is difficult to improve them and a great amount of cost is needed in the modification of them
由于我国幅员辽阔，有相当多的铁路处于山区，线路坡度大、曲线半径小、建设标准低，如果按照三大干线标准改造线路使之适应提速要求，铁路的改建很困难，所需人力物力不亚于修建新铁路，不适合我国目前的国情。 |
| 7. | By the calibration method , reliability index of current maintenance standard for mainline railway cwr in china is analyzed . an important conclusion that reliability index for different curved radius is different and reliability index of small radius curve is lower than big radius curve is reached
对我国干线铁路无缝线路稳定性的可靠指标进行了校准分析，结果是不同曲线半径的稳定性可靠指标不均衡，小半径曲线的可靠指标偏低。 |
| 8. | Based on the analysis and comparison of influences of various intermediate support bearing types on the internal forces of the curved girder bridges , the applicable conditions of the different hearing types for design of the curved girder bridges with fairly narrow decks and sharp radii have been obtained
摘要通过中支点不同的支承形式对曲线梁桥内力影响的分析和比较，得出不同的支承形式在较窄和曲线半径较小曲线梁桥设计中的适用条件。 |
| 9. | This paper discusses the minimum plane curve radius of medium - and low - speed maglev lines based on the influence factors such as trawler ' s easiness and technical demands of trains , etc . , and proposes the values of the minimum plane curve radii that can be taken for reference in determining the correlative route parameters on the medium - and low - speed maglev lines
摘要从乘客舒适度、磁浮列车自身技术要求等角度，对中低速磁浮交通线路规划中的最小平曲线半径进行探讨并得到建议值，为中低速磁浮交通线路相关参数的制定提供参考。 |
| 10. | Among railway line ' s plane design parameter , the minimum radius of curve , transition curve ' s type and length , straight line between two curves , centre - to - centre distance of track are key factors which confine railway to bringing up speed , moreover these factors among maglev railway request even more strict
由于高速磁悬浮铁路采用了非接触式的行车技术，舒适性将得到很好的改善。铁路线路平面设计参数中，最小曲线半径、缓和曲线长度、夹直线长度、线间距离是限制列车速度的关键因素，高速磁浮铁路同样如此。 |
