旧路改造工程中线形变形和修复研究

Research on Linear Deformation&Restoration in Old Road Reconstruction Project

针对国内旧路改扩建、大中修和养护巨大需求,从总结旧路改造工程线形特征入手,对线形变形的地质条件和突出节点路桥结合段进行分析,并对路线变形分阶段形成过程和对行车舒适性影响进行分析。针对工程线形特点,从4个方面展开工作:补充并细化测量控制要点;梳理旧路改造工程设计标准,从旧路改造工程特征提出线形修复设计控制要素,总结线形设计方法后,完善三次样条曲线相关设计方法;分类总结旧路改造工程效果和存在问题;对工程设计标准不适的突出问题原因进行分析,提出旧路改造工程中线形研究方向。

In response to the huge demand for the renovation,expansion,large&medium-sized repairs,and maintenance of old roads in China,starting from summarizing the linear characteristics of old road renovation projects,it analyzes the geological conditions of linear deformation&the prominent nodes of road bridge junction sections,and analyzes the phased formation process of line deformation and its impact on driving comfort.Based on the characteristics of engineering alignment,work will be carried out from four aspects:supplementing&refining measurement control points;sort out the design standards for old road renovation projects,propose control elements for linear restoration design based on the characteristics of old road renovation projects,summarize the linear design methods,and improve the relevant design methods for cubic spline curves;classify and summarize the effectiveness and existing problems of old road renovation projects;analyze the reasons for the prominent issues of unsuitable engineering design standards,and propose the direction of linear research in old road renovation projects.