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对南方山区含碎石黏土地基采用900、1 200、1 500、1 800kN·m 4个不同能级强夯工艺进行加固,并对强夯前后含碎石黏土地基进行瑞利波和标准贯入试验,根据试验结果得到合适的强夯工艺,同时分析瑞利波波速和标准贯入击数之间的相关性。结果表明,选用1 200kN·m低能级强夯工艺对含碎石黏土地基进行处理能达到较好的加固效果;瑞利波波速和标准贯入击数之间存在一定相关性,服从幂函数分布,实际工程中可考虑根据二者的相关性对原位试验进行简化处理。
In the mountainous area of southern China, the gravelly clay-containing ground was reinforced with four different levels of dynamic compaction technology of 900, 1 200, 1 500 and 1 800 kN · m, and the Rayleigh wave and standard penetration of gravel clay foundation before and after dynamic compaction According to the test results, the suitable dynamic compaction technology is obtained, and the correlation between the Rayleigh wave velocity and the standard penetration number is analyzed. The results show that the treatment of crushed clay foundation with 1 200 kN · m low energy dynamic compaction process can achieve better reinforcement effect. There is a certain correlation between the Rayleigh wave velocity and the standard penetration number, obeying the power function distribution , The actual project can be considered according to the relevance of the two in situ experiments to simplify processing.