The results of the analysis show that the highway longitudinal grade had little influence on pavement performance.
分析结果表明，公路纵坡对路面结构受力的影响不明显。
The existing highway design criterion only takes setting pavement longitudinal grade, side ditch and drainage ditch into account in order to eliminate surface water.
现有的公路设计中，考虑较多的仅仅是通过设置道路的纵坡、边沟及排水沟等设施来排除地表水。
By analyzing the relationship between speed loss, speed discount in different gradient and grade length, the paper also brings forward the maximum longitudinal gradient and grade length limit.
通过速度折减量与坡长之间的关系曲线，提出基于运行速度差和满足公路服务水平要求的各级公路最大纵坡坡度与坡长限制值。
So the relationship between longitudinal gradient, grade length limit, vertical curve and safety is analyzed, which can be referred to improve the safety and optimize the profile design.
根据下坡路段事故统计资料，分析纵坡坡度、坡长、竖曲线和下坡衔接平曲线与道路安全的关系，为提高长大下坡路段安全，优化纵面设计提供参考。
The emphasis of montane highway design is vertical alignment's design, there are usually two controls parameters: concessional maximal longitudinal and concessional maximal length of grade.
而山区公路分离式断面路线设计的重点是纵断面设计，在纵断面线形设计中通常使用两项控制参数：容许最大纵坡和最大容许坡长。
Longitudinal reinforcement (reinforcement ratio) and the stirrup strength grade contribute little to the improvement of horizontal bearing capacity. It can be collocated by configuration. For R.
加固用纵筋（配筋率）及箍筋强度等级，对结构水平承载力的提高贡献不大，可按构造配置；
The results of batch manufacture grade X80 spiral and longitudinal submerged arc welded pipe all meet the pipe technical conations required by"Grade X80 Pipeline Steel Pipe Application Project";
X80钢螺旋缝和直缝埋弧焊管的批量试制结果全部符合“X80级管线钢管应用工程”钢管技术条件的要求；
The results of batch manufacture grade X80 spiral and longitudinal submerged arc welded pipe all meet the pipe technical conations required by"Grade X80 Pipeline Steel Pipe Application Project";
X80钢螺旋缝和直缝埋弧焊管的批量试制结果全部符合“X80级管线钢管应用工程”钢管技术条件的要求；
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