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基于莫尔–库仑强度理论且考虑应力叠加原理,并引入2个基本力学概念——平均正应力、偏应力,研究并建立了能够同时考虑地震动正应力、动剪应力和土的自重静正应力、静剪应力联合作用的冻土路基地震破坏判别的应力强度准则。由青藏铁路典型冻土路基剖面的算例判别结果表明,所建立的应力强度准则具有一定的置信度。
Based on the theory of Mohr-Coulomb strength and considering the principle of stress superposition, and introducing two basic mechanics concepts of average normal stress and deviatoric stress, we have studied and established a set of equations that can consider both positive normal stress, dynamic shear stress, Stress Intensity Criteria for Judgment of Earthquake Damage of Frozen Soil Embankment in Combination with Stress and Static Shear Stress. The results of numerical examples from the typical subgrade of Qinghai-Tibet Railway indicate that the established stress intensity criterion has a certain degree of confidence.