王鹏
摘要:随着经济的发展,高速公路建设规模也在不断扩大,尤其是路桥工程也在逐渐增加,带动着路桥过渡数量持续上升。在高速公路工程中,路桥过渡段属于薄弱流程,经常会出现问题,比如路基塌陷、裂缝等,因此需要研究有效的解决措施防治过渡段路基病害。本文主要阐述高速公路路桥过渡段出现的路基病害,同时提出有效解决措施,仅供参考。
Abstract: With the development of economy, the scale of highway construction is also expanding, especially the road and bridge project is also gradually increasing, driving the number of road and bridge transitions to continue to rise. In expressway engineering, the road and bridge transition section is a weak process, and problems often occur, such as roadbed collapse and cracks. Therefore, it is necessary to study effective solutions to prevent and control the transition roadbed diseases. This article mainly describes the roadbed diseases that appear in the transition section of rood and bridge on the expressway, and at the same time proposes effective solutions for reference only.
关键词:高速公路;路桥过渡;路基病害
Key words: expressway;transition of road and bridge;roadbed disease
中图分类号:U418.5;U445.7 文献标识码:A 文章编号:1006-4311(2020)17-0171-02
0 引言
高速公路路桥过渡段存在着路基病害特征,比如桥头跳车。桥头跳车指的是在桥台建筑物和引道路堤衔接处出现差异沉降,同时在纵向路面产生错台,进而让行驶车辆路过某一段时会产生颠簸。高速公路的路基病害会让行车安全受到影响,同时也会增加车辆运行车本、养护成本。因此需要实施合理的综合防治策略,维持高速公路路桥过渡段路基的完整性和安全性,保证行车稳定,进而推动经济发展。
1 阐述高速公路路桥过渡段的病害特征
高速公路的基础结构不同,路面的刚度和变形也会发生突变,进而出现过渡段问题。例如桥上与邻近的路基、隧道内外等交接部位,均是出现线路不平顺的区域,尤其是路堤和桥梁连接处最容易产生不平顺。高速公路的路桥过渡段有跳车现象,会让行车安全和稳定性受到影响,高速公路路桥过渡段因跳车而发生路基下沉、变形等线路病害,出现此现象的原因主要有:……p>