旧路改造纵断面设计研究

利用旧路改扩建提高道路的通行能力已成为区域道路网络升级的重要方式,通常改造后道路平面基本沿着旧路走向,横断面由道路性质和通行能力要求而定,而纵断面具有较大的优化设计空间,但目前国内对改扩建项目并没有专门的规范供设计者参考。该文结合若干道路大修工程经验,针对旧路改造工程纵断面设计进行了总结性研究,提出了主要影响因素和设计原则,并对不同路段提出了纵断面设计的要点。

Study on Longitudinal Section Design of Old Road Reconstruction

To enhance the traffic capacity of road by reconstruction and extension of old road has become the important mode of upgrading the area road network.The road plane basically aligns along the old road after reconstructed.The cross section is defined by the road character and traffic capacity,and the longitudinal section has the larger optimized design space.There are no special standards referred for the designers to reconstruct and extend the projects in China now.Combined with the overhaul engineering experience of several roads and aiming at the longitudinal section design of old road reconstruction,the article sums up and puts forward the main influence factors and the design principle,and gives the gist of longitudinal section design for the different road sections.