在传统的基于集中质量矩阵的剪切质点系法(集中质量法)基础上,发展了基于一致质量矩阵的剪切质点系法(一致质量法),利用剪切质点系法对半空间上水平层状场地自振频率特性进行了分析,主要考虑了土层剪切模量分布、土层层厚分布以及覆盖层总厚度3个因素对场地自振频率的影响,并总结了影响规律,同时考虑了计算厚度选取的问题。分析结果表明:所得结论对于建筑场地地震分析、结构抗震以及剪切质点系法的工程应用均具有一定的实际意义。 Based on the traditional mass-based shear-point method (focused mass method), a shear-mass method (uniform mass method) based on the uniform mass matrix is ​​developed. By using the shear particle method, The frequency characteristics of natural frequencies of layered terrains were analyzed. The influences of three factors including the distribution of shear modulus, the thickness distribution of the soil layers and the total thickness of the terrains on the natural frequencies of the site were considered, and the influence laws were summarized. Meanwhile, Consider the problem of calculating thickness selection. The analysis results show that the conclusions obtained are of practical significance for engineering application of seismic analysis of building site, structure aseismicity and shear particle system.