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为了维护生态环境、保护土地资源、节约建设资金,提供一种合理的泥质软岩土石混合料弃渣路基填筑工艺和有效的路基质量检测方法,以成武(成县—武都)高速公路为工程依托,基于土样的基本工程性质和大型击实试验结果,通过不同含水率和压实度的动力触探检测试验、现场路基填筑试验、路基沉降监测及数值计算分析,采用线性回归法对检测试验数据进行拟合分析。研究结果表明:动力触探锤击数与路基含水率和压实度相关,随着含水率的增加,动力触探锤击数先增大后减小,含水率对锤击数的影响较压实度显著;40cm左右的泥质软岩土石弃渣路基松铺厚度,填料粒径不大于260mm,在现有施工机械条件下8遍碾压的路基填筑工艺是合理的;提出了适用于泥质软岩土石混合料弃渣填筑路基的质量检测方法和检测标准。
In order to maintain the ecological environment, protect the land resources and save the construction capital, a reasonable process of filling the muddy rock-soil mixture waste slag embankment and the effective subgrade quality detection method are provided. Based on the basic engineering properties of the soil samples and the results of large-scale compaction test, the highway is built on the basis of the engineering nature of the soil samples and the results of the large-scale compaction test. Through the dynamic detection test, the embankment filling test, the subsidence monitoring and numerical analysis of the subgrade with different water content and compaction, Regression test data fitting test. The results show that the number of dynamic probe hammering is related to subgrade moisture content and compaction degree. As the moisture content increases, the number of dynamic probe hammer increases first and then decreases, and the influence of moisture content on the number of hammering The degree of solidity is significant; 40cm or so muddy soft rock and soil spoiler thickness of subgrade slab, filler particle size of not more than 260mm, under the existing construction machinery conditions 8 times roller compaction subgrade filling process is reasonable; proposed for Quality testing methods and testing standards for embankment filled with muddy rock - soil - rock mixture.