随着数值计算的发展，越来越多的研究学者青睐于采用 FLAC3D软件。表征土体性质的参数体积模量和剪切模量是必不可少的，一般都是由弹性模量和泊松比计算而得，然而勘察报告中提供的往往是土体压缩模量，因此如何正确区分并获得所需的土体模量进而提高数值模拟的准确性，变成了不容忽视的问题所在。对现今常用方法进行了优缺分析，分别从三个角度出发对该问题的解决进行了阐述，并结合一工程实例进行验证。通过以上提出的三种方法的计算结果以及现场试验结果之间的对比分析，验证了所提方法的合理性，并针对不同情况下土体的模量取值提出相对较为合理的方法及建议。%With the development of numerical calculation ,more and more researchers and scholars show great interest in FLAC3D software ,in which the parameters are essential such as the bulk modulus and shear modulus that represent soil property ,they are generally calculated by the elastic modulus and Poisson’s ratio ,while the soil compression modulus is usually offered in survey report ,so how to distinguish and obtain the appropriate soil modulus and further improve the ac-curacy of the numerical simulation have become the problem that cannot be ignored .Firstly ,the advantages and disad-vantages of the commonly used methods are analysed here ,and then three solutions to the problem are proposed .Then , an engineering example is introduced for validation .Through the comparison and analysis between the calculation results of three kinds of the methods mentioned above as well as the actual observation results ,the rationality of the proposed methods is verified ,and the suggestion for the obtained way is put forward according to the reasonable soil modulus value under different conditions .
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