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云南瓦贡线线公路设计+CAD图纸

时间:2021-07-17 22:50来源:毕业论文
云南瓦贡线线公路设计位于云南省怒江。地处亚热带季风气候,一年四季分明,雨量充沛。年平均气温:17℃;最高温度:38℃;最低温度:-3℃。年平均降水量:1400mm。最大风力:5—

设计总说明书云南瓦贡线线公路设计位于云南省怒江。地处亚热带季风气候,一年四季分明,雨量充沛。年平均气温:17℃;最高温度:38℃;最低温度:-3℃。年平均降水量:1400mm。最大风力:5—6级。地震潜在可能性:不处于地震带。69400

路段所处的地形平坦,地质优良。设计段起点A的桩号为K0+000。获得设计路段的土层的基本分布情况为:表土层(1-2m),灰白色粘土(2-3m),灰黑色粘土(4m以下),再往下是灰色泥岩。

设计的最初,在定线时选择了三条路线,由于设计范围的地势较陡,选择了较为平坦的路线,但由于转角度数过大,转折点过多,不利于施工和经济效益,最终经反复思考,定出了较合适的路线。

公路总长设计为2662.141米,设为一级公路,速度为80km/h,年均日交通量预测为7890辆,年增长率5.1%。

平面设计中设有6个特殊点,4个转角,4段圆曲线段,半径为638m,400m,492m,841m。缓和曲线为171m,162m,155m,209m。曲线间直线最小长度的要求同向曲线间的直线最小长度以不小于360 km,反向曲线之间的直线段最小长度不可小于120 km。

在竖曲线设计阶段采用“平包竖”原则,各方面考虑平、纵、横三个方面试定坡度线,确定纵坡值,确定竖曲线半径,接下去计算设计标高,完成纵断面图。

在横断面设计阶段,根据交通量,行车速度、结合地形来确定道路行车道、中央分隔带、人行道和路肩等的布置,确定其横向几何尺寸。在标准横断面的基础上对各桩的横断面进行加宽和超高设计,以提高驾车的舒适和安全。

土石方调配,分横向调配和纵向调配。并计算借方,弃方和总运量。通过土石方调配来解决设计道路的土石方数量的平衡与利用,在国家政策和技术经济的条件下,尽可能移挖作填,避免不必要的借方和弃土。

路基设计重点考虑路基的设计和利用圆弧法来计算土体稳定性。修筑挡土墙是为了阻止土体坍滑,主要受侧向土压力。用于路堤的支撑,路堑边坡、隧道洞口、桥梁两端等等。挡土墙的设计和排水设施布置,挡土墙采用8m的重力式挡土墙。重力式挡土墙结构简单,施工简便,故采用重力式挡土墙。

毕业论文关键词:道路设计;路基路面设计;

The total design specification

Yunnan wagon line highway design in Yunnan province is located in the Nu River. Wagon line road is located in the subtropical monsoon climate, four seasons, abundant rainfall. Annual average temperature:17℃; maximum temperature:38℃; minimum temperature:-3℃. Annual average precipitation:1400mm. Maximum wind: 5 - 6.Earthquake potential: not in the earthquake belt.

The topography of the section is small and the geological condition is good. The number of A at the beginning of the design is K0+000. According to the analysis of drilling site identification, static cone penetration test, standard penetration test and laboratory soil test data, obtained the basic distribution of road soil for soil layer (1 - 2m), gray clay (2 - 3M), gray clay (4m), and then down the grey mudstone. The gray white clay and black clay layer weathered gray clay rock slope.

  The design of the original, chose three routes in the line, because the design range of steep terrain, a relatively flat line, but because the angle is too large, the turning point is too much, is not conducive to the construction and economic benefits, finally after repeated thinking, set up a suitable route.

  The total length of the highway is designed as 2662.141 meters, and it is a first class highway. The speed is 80km/h, and the average daily traffic volume is 7890, with an annual growth rate of 5.1%.

云南瓦贡线线公路设计+CAD图纸:http://www.youerw.com/gongcheng/lunwen_78435.html
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