毕设基本摘要
摘 要
本设计为天津市西南部地区滨河路K4+850至K7+330路段，设计等级为二级公路，设计时速为60km/h。
论文中对整个设计过程的思路、设计数值、参考依据都做了详细的说明。该论文融合了文字说明和计算说明。主要内容包括：平面线形设计、纵断面线形设计、横断面设计、路面结构设计、交通工程及沿线设施设计、施工组织设计等。平面线形维持原线形基本不变；纵断面设计包括地面高程、设计高程、填挖深度和竖曲线要素；确定标准横断面绘出每桩地面线及横断面图；最后根据交通量资料及路面设计规范，确定路面设计方案。整个设计过程严格按照国家有关规范进行。
通过对二级公路改扩建的设计，掌握纬地道路辅助设计系统的应用，以及运用所学的专业理论，熟悉道路的设计过程，强化我们对基本知识和基本技能的理解，使理论与实践相结合，提高工程设计能力。
关键词：路线设计；纵断面设计；横断面设计；路面设计
ABSTRACT
This thesis intends to design a Second-class road from K4+850 to K7+330 in the southwest area of Tianjin City. The design speed volume is 60 km/h.
In this thesis, it explains the design's thread, design value and the basis of references. The thesis is consisted of two parts: the literal interpretation and calculation specification, which include the design of flat alignment, vertical alignment, cross-sectional, pavement structure, traffic engineering and road facilities, the plan of construction management and so on. Horizontal alignment to maintain the original linear invariant; Vertical section design is comprised of road elevation, design elevation, depth of dig and fill and requisites for vertical curve; Contents of horizontal section design are fixing standard horizontal section, mapping every ground line and horizontal section; At last make a blueprint according to traffic information and road design rules. The whole process of the design is carried out according to the criterion of nation.
Our understanding of fundamentals knowledge and skills is enhanced and improved by designing the second-grade highway extension, grasping the application of Hint(CAD) software and getting familiar with the process of road design with learned professional knowledge. So is our ability in designing engineering projects and combining theory with practice.
KEYWORDS：route design; profile design; ceoss-sectional design; pavement design
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