摘要
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。
Based on the lower bound theorem of shakedown analysis, a procedure for shakedown analysis of structures has been established by using plastic strain energy as the shakedown criteria via a special loading path. The proposed procedure can solve effectively the problems in mathematical programming method. This paper presents an application of the proposed procedure of shakedown analysis on pavements. In the analysis, the equivalent circle yield criterion was used to denote the properties of pavement material. The influence of material properties, structural form, temperature change of pavements on shakedown behavior were investigated. The numerical results show that the proposed procedure is reliable. Therefore, energy principle provides an application approach for shakedown theorem in the field of pavement engineering.
出处
《工程力学》
EI
CSCD
北大核心
2010年第11期88-93,共6页
Engineering Mechanics
基金
国家高新技术863课题项目(2006AA09A103)
上海市重点学科建设项目(B208)
关键词
路面
能量原理
安定分析
下限定理
加载路径
pavements
energy principle
shakedown analysis
lower bound
loading path
