毕业设计一级公路设计

1、毕 业 设 计 论 文题目：河南省S231线鲁山段K8+700 至K10+700段施工图设计系 别： 交通工程系专 业： 交通工程姓 名： 王金辉学 号： 022408238指导教师： 吴近勇河南城建学院2012年 5 月 25日摘 要本设计方案定为山岭重丘区一级公路设计，设计时速100Km/h，双向六车道。设计部分路段全长2000米，路基宽度为33.5米，其中中央分隔带2.0米、左侧路缘带0.75米、行车道宽度22.5米、硬路基3.0米、右侧路缘带0.75米、土路肩0.75米。本设计共设3个平曲线，平曲线均设置缓和曲线。三个平曲线处均设置超高，超高过渡方式为绕中央分隔带边线旋转,分别为2%、2.5%、2.5%。根据地形条件全线在K8+960.76处设一个竖曲线，变坡前纵坡度为0.5%，坡长1860米，其中在本设计段内的有200米；变坡后纵坡度为1.5%，坡长1740。变坡点前后均无坡长限制。全线设涵洞三处，第一处位于K8+765处，第二处位于K8+900处,第三处位于K8+950处。全线设桥梁四座，分别是K9+156、K9+314、K9+850三处位于挖方路段设置的为方便原旧路而架设

2、的桥梁和K10+100K10+450处为跨越河滩而设的高架桥。本设计对挡土墙进行了设计包括路堤挡土墙和路堑挡土墙，并分别进行挡土墙验算。本设计路基防护，路基填土高度H小于3m时，采用草坪网布防护，路基填土高度H大于3m时，采用浆砌片石衬砌拱防护。含有深挖路基时，当高度超过6m，需设置护面墙。本设计路拱采用双向坡面，坡面坡度为2%，路肩坡度为3%。本设计的排水分为路基排水和路面排水两部分。其中路基排水设施包括边沟、截水沟、排水沟及相应的涵洞组成，路面排水包括路面表面排水、中央分隔带排水、路面内部排水和边缘排水系统组成。边沟、截水沟、排水沟尺寸深及底宽均取为60cm。路面设计内容包括路面类型的确定和结构厚度设计，本设计路面采用沥青混凝土路面，设计路面结构为5层依次是4cm细粒式沥青混凝土、6cm中粒式沥青混凝土、8cm粗粒式沥青混凝土、25cm水泥稳定碎石、25cm水泥石灰砂砾土，经验证各项指标满足设计要求。 关键字：一级公路，设计，山岭重丘区，沥青路面，挡土墙 Abstract This design as a highway design of mountainous areas, t

3、he design speed of 100Km / h and two-way six lanes. This design of sections of length 2000 m, the roadbed width of 33.5 m, 2.0 m central reserve and curb zone on the left with 0.75 meters, the width of the carriageway of 22.5 meters, 3.0 meters of hard roadbed, the right side of the curb zone with 0.75 meters, the earth shoulder 0.75 meters. This design, a total of three horizontal curve horizontal curve are set to ease the curve. Three flat curve at each equipped with ultra-high.The way of the

4、ultra-high transition edges rotate around the central reserve ,respectively, 2%, 2.5%, 2.5%. Across the board according to the terrain conditions in the K8 +960.76 set up a vertical curve, variable slope of the anterior longitudinal gradient of 0.5%, slope length of 1860 meters and which in this design have200 meters, variable slope of the posterior longitudinal gradient of 1.5%, slope length 1740. No matter how the before and the after the point of gradient change slope the length of the road h

5、as no limit. Across the board to set culverts three first place is located in the K8 +760, located in the K8 +900 and located in the K8 +950. Across the board to set up a bridge four, respectively K9 +156, K9 +314, K9 +850 three sections set in the excavation for the convenience of the old road and erection of bridges and K10 +100- +450 at the K10 across the floodplain and the viaduct . This design of retaining walls design includes a retaining wall of the embankment retaining walls and cutting

6、retaining walls, and retaining walls checking. The design of embankment protection, embankment height H is less than 3m, lawn mesh protection, embankment height H greater than 3m, the protective lining arch mortar rubble containing ferret out the roadbed, when the height of more than 6m need to set the retaining wall. Road humps of this design using two-way slope, slope gradient of 2%, the shoulder slope of 3%. The drainage of this design is divided into two parts of the subgrade drainage and ro

7、ad drainage. Subgrade drainage facilities including ditches, drainage ditches, drains and culverts, road drainage of the road surface drainage, central reserve drainage, pavement, drainage and edge of the drainage system. Ditches, drainage ditches, drains size, depth and bottom width are taken as 60cm. Pavement design including pavement type determination and structural thickness design, the design of the road with asphalt concrete pavement design pavement structure layer followed by a the 4cm f

8、ine asphalt concrete, 6cm in grain-type asphalt concrete, the 8cm coarse asphalt concrete, 25cm of cement stabilized crushed stone, cement and lime gravel soil 25cm indicators to meet the design requirements. Keywords: a road design, mountainous areas, asphalt pavement, retaining walls 目 录前 言1第1章 绪论21.1 设计的目的21.2设计原始资料及依据21.2.1某山岭重丘区地形图1份，比例1:200021.2.2道路所在地区的气象资料21.2.3沿线的工程地质及水文地质情况21.2.4沿线的植被及土壤分布情况21.2.5道路建筑材料及分布情况21.2.6交通量资料21.3技术标准31.4设计依据3第2章 路线平面设计52.1道路选线52.1.1道路选线的原则52.1.2道路选线的方法62.2平面设

9、计技术指标的确定62.2.1直线的最大长度62.2.2 直线最小长度62.2.3圆曲线72.2.4 缓和曲线的最小长度及参数82.2.5平曲线最小长度102.2.6 行车视距102.3平面线形设计102.3.1平曲线计算11第3章 路线纵断面设计14 3.1 道路纵断面设计概述143.1.1 纵断面设计的一般要求143.1.2纵断面设计的方法和步骤15 3.2 纵断面设计技术指标的确定153.2.1 最大纵坡153.2.2 最小纵坡、平均纵坡、合成坡度163.2.3 最大坡长173.2.4 最小坡长173.2.5 竖曲线183.3 道路平、纵线形组合203.3.1 道路平纵组合的设计原则203.3.2 平曲线与竖曲线的组合203.3.3平、竖曲线应避免的组合20第4章 路线横断面设计22 4.1 横断面设计技术指标的确定224.1.1 路基宽度224.1.2 路肩224.1.3 路拱横坡234.1.4 护坡道与碎落台234.1.5边沟234.1.6 截水沟244.2 平曲线超高与加宽设计254.2.1 超高的计算264.2.2 加宽的计算28第5章 路基设计295.1 路基路面设计的一般规定295.2 路基设计内容295.2.1 路基横断面布置及宽度设计295.2.2 路基压实305.2.3 路基边坡设计315.2.4路基边坡稳定性验算325.3 路基施工一般规定325.3.1 填方路基的施工335.3.2 挖方路基的施工335.4路基排水设计345.4.1路基排水设计一般原则3

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