摘要
合理的横断面形式、平纵线形指标、路基路面设计是城市道路改建中的关键。结合苏州老城区道路改建项目,针对现状建设条件、交通量预测结果,推荐采用三块板断面布置形式。通过拆除原侧分带、压缩非机动车道形式,使现状双向四车道实现双向六车道,同时新建侧分带保留了四排绿化,充分考虑了老城区道路绿化景观需求。拓宽新建段一般路基设计采用20 cm C20混凝土处理,路面设计根据现状弯沉值推荐了两种方案,为城市道路改建工程提供经验参考。
Reasonable cross-section form,horizontal and vertical linear index,subgrade and pavement design are the key to urban road reconstruction.Combined with Suzhou Old Urban Road Reconstruction Project,and aiming at the current construction conditions and traffic volume prediction results,the three-plate cross-section layout is recommended.By removing the original side zoning and compressing the form of non-motorized lane,the current two-way four lanes can be realized two-way six lanes.Meanwhile,the new side zoning is built and four-row greening is retained.The road greening landscape needs of the old urban area are fully considered.The 20-cm C20 concrete is used in the general subgrade design of the new widening section.Two schemes are recommended in the pavement design according to the current deflection value,which provides experience and reference for the urban road reconstruction projects.
出处
《城市道桥与防洪》
2020年第5期24-26,38,M0006,共5页
Urban Roads Bridges & Flood Control
关键词
横断面形式
路基路面设计
交通量预测
双向六车道
弯沉值
cross-section form
subgrade and pavement design
traffic volume prediction
two-way six lanes
deflection value
