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针对高速铁路特点,结合地基承载力计算公式,应用数理统计原理,对两个典型工程试验段软弱地基的土工试验和螺旋板载荷试验资料进行统计分析,推导出松软土室内试验天然抗剪强度指标判别标准关系式;经对不同地区大量土工试验数据的统计分析,界定了松软土室内试验天然含水量、天然孔隙比判别标准;系统归纳提出了松软土室内试验与原位测试物理力学指标综合判别标准体系推荐表,并通过两个不同沉积环境大量松软土测试资料的实例判别,验证了软松土判别标准的可行性。
According to the characteristics of high-speed railway, combined with the calculation formula of the bearing capacity of foundation, the statistic analysis of the geotechnical test and the spiral plate load test data of the weak foundation in the two typical engineering test sections is made, and the natural shear strength index Discriminant standard relationship; After a large number of geotechnical test data in different regions of the statistical analysis, define the soft soil indoor test of natural water content, natural porosity ratio criteria; systemically put forward the soft soil indoor test and in situ test of physical and mechanical indicators comprehensive discrimination Standard system recommended table, and through two different sedimentary environment a large number of loose soil test data to determine the feasibility of the test case to verify the criteria.