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通过特殊的加载方式,建立了一种基于下限理论的以结构吸收的塑性能为安定判断准则的求解安定问题的数值方法。此方法避免了传统分析方法中的数学规划运算,具有较高的求解效率。采用等面积圆屈服准则,把该方法应用于路面结构安定分析,给出了路面材料性质、结构组成形式、温度变化对路面安定极限影响的计算结果,分析结果表明所提出的方法对于路面结构性状的分析是有效可靠的。能量原理的运用拓展了安定理论在道路领域的应用途径。
Through a special loading method, a numerical method based on the lower bound theory is established to solve the stability problem that the plastic property absorbed by structure is the criterion of stability. This method avoids the mathematical programming in the traditional analysis method, and has higher solving efficiency. This method is applied to the stability analysis of pavement structure. The calculation results of pavement material properties, structure components and temperature changes on the stability of pavement are given. The analysis results show that the proposed method is effective for pavement structure properties The analysis is effective and reliable. The application of energy principle expands the application of stability theory in the field of roads.