高速公路改扩建工程中路基加宽方式及其特点综述

旧路加宽改造工程与新建公路相比具有施工难度大、工艺复杂、质量要求高等特点。由于旧路路基沉降已基本趋于稳定,而新路路基沉降时间短,新旧路基结合处必将产生不均匀沉降,从而产生纵向裂缝,导致水泥混凝土面板在荷载作用下产生断板,沥青混凝土路面产生反射裂缝,对行车质量带来很大影响,不仅无法满足汽车行驶的需要,还会增加汽车的燃油消耗和轮胎磨耗,加大运输成本,增加运输时间,甚至会危及行车安全,同时也加大了道路养护成本。本文针对公路加宽技术研究迫切性,对高速公路改扩建工程中路基加宽方式及其特点进行综述,形成合理的高速公路加宽改造工程理念,为理论研究和工程实践奠定基础。

Expressway Extension Foundation of widening ways and characteristics

Old Road Widening of Highway Engineering and compared with new construction difficult,complicated process,and high quality requirements.Since the old road subgrade settlement has basically stabilized,but the new road subgrade settlement in short time,the combination of old and new roadbed will create uneven settlement,resulting in vertical cracks in the concrete slab of cement produced load of boards,asphalt concrete pavement cracks have brought great reflection on the quality of traffic,not only can not meet the needs of automobile traffic,and increase vehicle fuel consumption and tire wear,increased transportation costs,increased transportation time,and will even endanger traffic safety,but also increased the cost of road maintenance.This paper Highway Widening Technology urgency of the Expressway Extension Foundation of widening ways and characteristics of ways to form a reasonable widening the highway reconstruction project ideas for theoretical research and lay the foundation for engineering practice.