1、京港澳高速公路复线长沙至湘潭段 4 标段初步设计 设计说明书 京港澳高速公路复线长沙至湘潭段第 4 标段初步设计 （K0+000K2+252.133） 摘摘 要要：本设计为京港澳高速公路复线长沙至湘潭段第 4 标段初步设计。根据给定的交通 量、地形图可以确定设计的公路等级为一级公路，设计车速 100km/h，路基宽 26m。 本设计包括路线的平面、纵断面、横断面，路基及排水，路面及排水，涵洞，沥青混凝土 路面设计，水泥混凝土路面设计和施工组织设计与概算。平面线路的设计是根据给定的起点和 终点，确定中间主要控制点，初步确定两个路线方案，通过方案的比选选出最佳方案。纵断面 设计是根据道路等级、沿线
2、自然条件和构造物控制标高等，确定路线合适的标高、各坡段的纵 坡度和坡长，并设计竖曲线。横断面设计是根据设计资料说明，并参照“标准横断面图”，画 出路幅宽度，填或挖的边坡线，并设计支挡构造物。排水系统设计是根据横断面沟底标高确定 流水方向，并设置涵洞。路面设计是根据公路等级、交通量进行路面结构设计。施工组织设计 包括:技术方案设计，施工进度设计，并进行概算。相关的表格、图纸附后。 关键词关键词：公路设计、路基、路面、排水、防护 THE PRELIMINARY DESIGN OF JING GANG AO HIGHWAY RAILWAY CHANGSHA TO XIANGTAN SECTION O
3、F THE FOURTH PARAGRAPH （K0+000K2+252.133） Abstract:Abstract: The design of jing gang ao Expressway and Railway Changsha to Xiangtan section of the fourth section of the preliminary design. The design of the highways speed is 100km/h, the roadbed width is 26m is according to the traffic volume, the t
4、opography had gived. The design includes the line plane, vertical section, cross section, the subgrade and pavement and drainage, drainage, culvert, asphalt concrete pavement design, design and construction design and budget of cement concrete pavement. The plane circuit design is given according to
5、 the starting point and end point, determine the main control point, initially identified two route schemes, the schemes and select the best scheme. Longitudinal section design is according to the grade of road, along the natural conditions and the structure control standard higher, to determine the
6、 appropriate elevation line, the slope of the longitudinal slope and slope length, and the design of vertical curve. Cross section design is illustrated according to the design data, and according to “standard section“, painting outlet width, slope line fill or digging, and design of retaining structures. Drainage system design is based on cross-sectional ditch bottom elevation determine the flow direction, and set the culvert. Pavement design
