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对463组饱和黏性土原状土样室内试验的最大动剪切模量和同一位置现场原位试验确定的最大动剪切模量进行了对比研究。结果表明:原状土样室内试验和同一位置的现场原位试验所确定的动剪切模量相差很大,室内试验结果基本上小于现场试验结果,埋藏深的土样相差更大;室内试验的最大动剪切模量与深度符合指数规律,并得到了室内试验最大动剪切模量与现场剪切波速的统计经验关系式。通过工程实例比较了两种试验最大动剪切模量对地震反应分析的影响,室内试验最大动剪切模量与现场剪切波速的关系统计式在工程场地地震反应分析中具有一定的参考应用价值。
The maximum dynamic shear modulus of 463 saturated clayey soil samples in laboratory and the maximum dynamic shear modulus determined by the in situ test at the same location were compared. The results show that there is a great difference between the dynamic shear modulus determined by the in-situ test of the original soil sample and the in-situ test of the same location. The indoor test results are basically smaller than the field test results, The maximum dynamic shear modulus and depth are in accordance with the exponential law and the statistical empirical relationship between the maximum dynamic shear modulus and the field shear wave velocity in laboratory tests is obtained. The influence of the maximum dynamic shear modulus of the two tests on the seismic response analysis was compared by engineering example. The relationship between the maximum dynamic shear modulus and the shear wave velocity in laboratory tests is of statistical significance in the seismic response analysis of engineering sites value.