改扩建公路不中断交通水泥稳定碎石基层双层连铺施工工法
2018-07-18唐佐忠
唐佐忠
摘要: 本文从工程实践出发,介绍了改扩建公路不中断交通且施工任务重、工程量大、工期短的水泥稳定碎石基层两层连续铺筑的施工方法。该工法与传统施工方法相比较(先铺筑下基层,养生达到强度后再铺筑上基层),无需待下基层达到要求的强度后铺筑上基层,在施工周期、工效等方面都更具优势,保证了工程质量,大大节约了工期和劳务成本,为今后类似工程的施工提供了参考。
Abstract: This article starts from the engineering practice and introduces the construction method of double-layer continuous paving of cement stabilized macadam base that reconstructs and expands roads without interruption of traffic, with heavy construction tasks, large quantities of works, and short construction periods. Compared with the traditional construction method(the first floor is paved and the foundation is built after the strength is reached), this method has more advantages in construction cycle, work efficiency and other aspects, such as without having to wait for the base to reach the required strength, and then to lay the base after it has reached the required strength.The quality of the project is guaranteed, and the time limit and labor cost are greatly saved, which provides a reference for the construction of similar projects in the future.
关键词: 稳定碎石;双层;连铺;公路
Key words: stabilized gravel;double-layer;continuous paving;highway
中图分类号:U215.7 文献标识码:A 文章编号:1006-4311(2018)16-0173-04
0 引言
近年来我国国民经济有了飞速的发展,公路基础设施建设日新月异,伴随着公路网技术水平的提高、汽车工业的不断进步,公路货物运输在综合运输体系中占有越来越重要的地位。随着公路货运能力的提升,对公路路面等级要求越来越高,原有公路路面无法满足公路货运的需要,需进行提质改造。水泥稳定粒料半刚性基层具有早期强度高,水稳定性好等优点,在高等级公路路面中应用越来越广泛,但其在刚施工完,水泥还没有完全水化反应,强度较低,无法在短时间内开放交通,需至少养生七天,而养生七天势必会造成施工时间的延误。基于此,当前公路工程技术人员研究的一个重要课题便是如何提高水泥稳定粒料施工进度。为解决上述问题,我单位依照国家、行业相关标准规范,并结合过往施工经验,在充分准备和试验的基础上,总结出来一套水泥稳定粒料基层双层连铺施工方法,具有较强的实用性。……
