为了保证汽车行使的安全与舒适，应把道路平、纵、横三面结合作为主体线形来

为了保证汽车行使的安全与舒适，应把道路平、纵、横三面结合作为主体线形来分析研究，平面与纵面线形的协调组合将能在视觉上自然地诱导司机的视线，并保持视觉的连续性，平原地区地势平坦，纵断面以平坡为主，上、下坡多集中中在大、中桥头，由于有通航要求，桥面标高相对两侧路面标高要求高出许多，因此在桥头，桥面通常设置竖曲线，竖曲线半径要适当，既要符合一级公路技术指标要求，又不宜使竖曲线长度太长而使桥头填土过高而增加造价，而平曲线在选线时一般要考虑大桥桥位与河流正交，以减少构造物的工程量及设计施工难度，节约经费，减少造价。

結果 (英文) 1:

To guarantee car exercise of security and comfortable, should put road flat, and longitudinal, and cross three surface combined as subject linear to analysis research, plane and longitudinal surface linear of coordination combination will can in Visual Shang natural to induced driver of sight, and keep Visual of continuity, plain area terrain flat, longitudinal section to flat slope mainly, Shang, and downhill more concentrated in the in big, and in the bridgehead, due to has navigation requirements, deck elevation relative sides road elevation requirements high out many, so in bridgehead, deck usually set vertical curve, vertical curve radius to appropriate, Both highway specifications, and should not be made vertical curve lengths are too long and the bridgehead filled too high and increase the cost, generally considered in the selection of horizontal curve bridge orthogonal to the River in order to reduce the overall structure engineering and design and construction difficulties, save money and reduce cost.

結果 (英文) 2:

In order to ensure the car exercise safety and comfort, should the road flat, vertical and horizontal three incorporated body alignment to the analysis, horizontal alignment coordinated combination of vertical surface will be able to naturally induce the driver's line of sight in the visual and maintain visual continuity, flat plains, flat profile to the main slope, on the downhill more concentrated in large, medium and bridge, due to navigation requirements, on opposite sides of the road deck elevation elevation requirements much higher, so the bridge deck usually set vertical curve, vertical curve radius should be appropriate, necessary to meet the technical requirements of a highway, but not too long so that the length of the vertical curve leaving the filling is too high and increased the cost of the bridge, and the flat curve line selection time general to consider the bridge from the river orthogonal to reduce the amount of engineering structures and the design and construction difficulty, save money and reduce cost.

結果 (英文) 3:

In order to ensure the vehicle safety and comfort, should take the road of vertical and horizontal surface with three as the main line to study coordinated combination of plane and vertical alignment will naturally induce drivers in the visual sight, and maintain visual continuity, plain area, flat, vertical section with flat slope mainly concentrated in the downhill, and the bridge, because the navigation requirements, the relative height of both sides of the road deck elevation requirements is much higher, so the bridge deck, usually set the vertical curve radius of vertical curve should be appropriate, both to meet the technical requirements of a highway, and not the vertical curve length is too long the bridge fill too high and increase the cost, and the flat curve in line selection in general to consider the bridge and the river to reduce the orthogonal structure design and engineering construction difficulty, save money Reduce cost.