摘 要
本设计是南宁至百色高速公路路基路面综合设计K141+850～K144+450段，全长2.6km，双向四车道，路基宽28m，行车道宽3.75m，硬路肩宽3.5m，土路肩宽0.75m，中央分隔带宽4.5m，设计行车速度为120km/h。
本设计进行了路基设计、挡土墙、涵洞设计、路面结构及路基路面排水设施设计。路面设计中，从经济实用的角度，对刚性路面和柔性路面进行了了比较，最终选择了沥青混凝土路面。其路面结构面层采用沥青混凝土15cm、基层采用水泥碎石25cm、底基层采用石灰土15cm。
本次设计中基本使用计算机辅助设计与成图，其中路线设计采用纬地软件，路面设计采用HPDS2003,挡土墙采用理正挡土墙（5.0）设计软件。同时本设计体现环保意识，强调环保。
关键词：高速公路 路基 路面 涵洞设计 挡土墙
Abstract
This is design of high way pavement subgrade from Nanning to Baise , the namber of pile is from K144+450～K47+050 .The whole length is 2.6km , four-lane two-way . The width of subgrade is 28m , the carriage way is 3.75m the hardware hard shoulder is 3.5m , the soil hard shoulder is 0.75m and the median is 4.5m. The design of the trafil speed is 120km/h.
The design contains subgrade , retaining wall , culvert ,pavement structure and subgrade surface drainage facilities .For road design ,from an economic point of view of practicality ,I compared the rigid pavement and flexible pavement and chose the ordinary concrete pavement ultimately .The structure includes the upper layer of ordinary concrete 27cm,the middle layer of stabilized gravel mixed by lime and coal powder 18cm,the low layer of natural gravel 15cm .
The main tool of calculating and mapping is aided with computer,a mong which, the design oj alignment highway is the software of HintCAD.pavement design use the HPDS2003 and the retaining wall is designed by rationale design software 5.0.The design principle is environment fridenly.
Key words: highway subgrade pavement culvert design retaining wall
南宁至百色高速公路路基路面综合设计.pdf
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