湖南科技大学本科生毕业设计（论文）二级公路初步设计摘要本设计为广水至曾都二级公路K0+000～K1+273.868段的初步设计。主要内容包括：平面设计、纵断面设计、横断面设计、路基设计、挡土墙设计、公路排水及防护工程、路面结构设计。在设计过程中结合已知资料和文献，并严格按照规范标准设计。线形设计阶段，遵循选线原则对路线方案做深入、细致的研究，做到少占农田，并与周围环境相协调；纵断面设计根据道路等级，综合考虑了路线填挖平衡；在横断面设计中考虑公路等级、行车要求、自然地质条件，保证路基的稳定和排水。在挡土墙设计部分采用了重力式挡土墙，在公路排水及防护工程部分充分考虑到当地地质状况,环境景观以及驾驶员的舒适性等因素。在路面结构设计部分，对沥青路面和水泥混凝土路面进行了详尽的比较，最终采用沥青路面。关键词：二级公路；平纵横设计；路基设计；挡土墙设计；路面设计ABSTRACTThisdesignstudiesthegradeIIhighwayfromGuangshuitoZengduwhichcoversK0+000~K1+273.868.Themaincontentsinclude:graphicdesign,alignmentdesign,cross-sectionaldesign,roadbeddesign,retainingwalldesign,roaddrainageaswellasprotectiveengineeringandpavementstrcturedesign.Thedesignisinstrictaccordancewiththecodestandardandconsultsrelatedreferences.Atthestagesofalignmentdesign,theauthorfollowedthemodelinchoosingthelineandtriestotakeuplittleland,andinharmonywiththesurroundingenvironment;longitudinaldesignaccordingtotheroadgrade,consideringthebalanceofexcavation;inthepartofcross-sectionaldesign,thedesignconsidershighwaygrade,drivingrequirements,andnaturalgeologicalconditioninordertoguaranteethestabilityofroadbedanddrainage.Inthepartofretainingwalldesign,thedesignerusesagravityretainingwall;inthedesignofhighwaydrainageandprotectiveengineering,inviewofthefactorsoflocalgeologycondition,environmentallandscape,andthecomfortofdrivers.Inthepartofpavementstructuredesign,afterthecomprehensiveselection,thecementbituminouspavementwasadoptedinthedesign.KeyWords：ThegradeIIhighway;Flatfreelydesign;Roadbeddesign;Retainingwalldesign;Pavementdesign目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc326173038"第一章工程概况及设计标准PAGEREF_Toc326173038\h1HYPERLINK\l"_Toc326173039"1.1公路沿线工程地质概况PAGEREF_Toc326173039\h1HYPERLINK\l"_Toc326173040"1.1.1路线走向PAGEREF_Toc326173040\h1HYPERLINK\l"_Toc326173041"1.1.2沿线地形、地质、气候、水文特征PAGEREF_Toc326173041\h1HYPERLINK\l"_Toc326173042"1.1.3沿线施工条件PAGEREF_Toc326173042\h1HYPERLINK\l"_Toc326173043"1.2设计标准PAGERE