道路安定理论的进展及其应用

发布时间：2018-06-28 14:56

本文选题：安定分析 + 交通荷载　；参考：《岩土力学》2014年05期

【摘要】：30多年来,国际上的道路设计原理及方法逐渐从传统经验法向运用理论框架方面转变。但这些理论框架主要基于土和粒状材料的弹性假设,从而限制了材料塑性性能的发挥。安定分析基于弹塑性理论,可以确定结构在循环或变值荷载作用下的最大承载力,因此,能够被运用于道路承受交通荷载的问题。阐述了安定理论的概念以及两种经典安定定理,回顾了道路安定分析方法的创始及发展过程,包括与试验结果的比较,讨论了残余应力在道路中的分布、两种求解道路安定荷载极限的方法,以及与塑性极限分析的比较,并把一种下限安定分析方法应用于多层柔性路面的设计,最后展望了道路安定理论未来的发展方向。
[Abstract]:Over the past 30 years, international road design principles and methods have gradually changed from the traditional empirical method to the application of the theoretical framework. However, these theoretical frameworks are mainly based on elastic assumptions of soil and granular materials, thus limiting the plastic properties of materials. Based on the elastic-plastic theory, the shakedown analysis can determine the maximum bearing capacity of the structure under cyclic or variable load, so it can be applied to the problem of road bearing traffic load. This paper expounds the concept of shakedown theory and two classical shakedown theorems, reviews the founding and development of road shakedown analysis methods, including the comparison with experimental results, and discusses the distribution of residual stresses in roads. Two methods to solve the load limit of road stability and a comparison with plastic limit analysis are presented. A lower bound shakedown analysis method is applied to the design of multi-layer flexible pavement. Finally, the future development direction of road stability theory is prospected.
【作者单位】：宁波诺丁汉大学土木工程系;英国诺丁汉大学岩土力学中心;
【基金】：英国工程及物理科学研究委员会资助项目(No.GR/R83903/01) 国家建设高水平大学公派研究生项目(留金出[2007]3020号)
【分类号】：U416.221

【共引文献】