高填方路基钢波纹管涵洞分层土压力分析

发布时间：2018-01-17 20:07

本文关键词：高填方路基钢波纹管涵洞分层土压力分析　出处：《中外公路》2014年01期 　论文类型：期刊论文

【摘要】：柔性、高强度的钢波纹管涵洞,不仅具有优良的适应地基与基础变形的能力,而且具有自重轻、运输方便、施工简单、造价低、对地基扰动小等优点,故其具有较为广泛的应用前景。该文通过对高填方钢波纹管涵洞进行野外现场试验,分析钢波纹管涵洞管周和管外各点所受力的大小及变化规律,为今后高填方路基中钢波纹管涵洞施工提供参考资料。通过研究取得以下结论:钢波纹管各点所受土压力随着填土高度升高而增加;在填土高度一样时,管周各点的土压力值不同,其中管周60°处的土压力最大,管中90°处土压力最小;与管顶水平的管外土压力大于管周各测点的土压力,这对于减小钢波纹管在高填方路基回填时的变形有指导作用。
[Abstract]:Flexible and high strength steel corrugated pipe culvert not only has the excellent ability to adapt to the deformation of foundation and foundation but also has the advantages of light weight convenient transportation simple construction low cost and small disturbance to the foundation. Therefore, it has a broad application prospect. Through field test of high filled square steel corrugated pipe culvert, this paper analyzes the force size and variation law of steel corrugated pipe culvert circumference and each point outside the pipe. This paper provides reference materials for the construction of steel bellows culvert in high embankment roadbed. The following conclusions are obtained: the earth pressure at each point of steel bellows increases with the increase of filling height; When the filling height is the same, the earth pressure is different at each point around the pipe, in which the earth pressure at 60 掳is the largest, and the earth pressure at 90 掳in the pipe is the smallest. The soil pressure outside the pipe at the level of the top of the pipe is greater than the earth pressure at the measured points around the pipe, which can be used to reduce the deformation of the steel bellows in the backfill of the high filling subgrade.
【作者单位】：中交第一公路勘察设计研究院有限公司;重庆交通大学;河南卢阳高速公路有限公司;
【分类号】：U449
【正文快照】： 钢波纹管涵洞具有自重轻、强度高、造价低等优点,在高填方路基上应用具有一定的优势,在软土、膨胀土和湿限性较强、地基承载力较低的地区应用得比较多,且其效果相对较好。通过研究及施工现场分析发现,高填方钢波纹管涵部分出现变形,因此该文通过现场试验,分析了钢波纹管涵管

【参考文献】