基于连续压实控制技术的路基压实质量评价方法

发布时间：2018-01-14 08:29

本文关键词：基于连续压实控制技术的路基压实质量评价方法　出处：《公路》2017年04期 　论文类型：期刊论文

【摘要】：现有的基于连续压实控制技术的压实质量评价方法里,缺少对薄弱碾压区域特征的考虑。文中通过花岗岩残积土路基的现场连续压实试验,建立了连续压实指标值CMV与灌砂法得到的压实度之间的相关关系。在此基础上,基于相对判别、加权平均和随机分布等数理统计理论,针对性地提出了区域压实程度、压实均匀性的评价方法。研究结果得到:对于花岗岩残积土路基,93、94和96区对应的CMV连续压实目标值分别为15.0、15.8和17.6;与现行铁路路基连续压实规范中的压实质量评价方法相比,文中提出的以标准偏移率q反映区域压实程度、最近邻点指数R反映压实均匀性的压实质量评价方法更具合理性。
[Abstract]:Based on the compaction quality evaluation technology of continuous compaction control method of existing, the lack of regional characteristics of weak rolling consideration. In this paper through the field of granite residual soil subgrade continuous compaction test, established the value relationship between CMV and obtained the degree of compaction of sand filling method and continuous compaction index. On this basis, based on relative discrimination the weighted average, and random distribution of mathematical statistics theory, puts forward the evaluation method of regional compaction, compaction uniformity. The research results are: for the granite residual soil subgrade, the corresponding 93,94 and CMV area 96 continuous compaction target values were 15.0,15.8 and 17.6 respectively; compared with the current compaction quality evaluation methods of railway subgrade continuous compaction in the specification, the standard deviation rate of Q to reflect the regional compactness, nearest neighbor index R to reflect the uniformity of compaction compaction quality evaluation method more Rationality.

【作者单位】：江西省高速公路投资集团有限责任公司;同济大学道路与交通工程教育部重点实验室;
【分类号】：U416.1
【正文快照】： 连续压实控制技术可以实现对路基压实质量的95%;压实均匀性应按不小于压实值的80%进行控全面、实时检测,避免了以灌砂法、环刀法等为代表制,且连续压实不合格区域面积上限值为6 m2[7]。的传统“点”检测方法的不足。连续压实控制技术在聂红志等提出压实体积的概念,定义薄弱区

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