摘要
作用在挡土结构上的土压力会随着土体出现的位移量而发生变化。据此,提出考虑变形影响的挡土结构受力分析方法,如果土体的位移量在极限变形范围内,采用考虑位移的土压力计算公式;如果土体的位移量超出了极限状态,则采用考虑滑动面的土压力计算公式,并将该方法的计算结果与前人的离心模型试验实测结果以及数值模拟结果进行对比分析,验证该分析方法的合理性,最后应用到实际工程,为工程的合理施工提供了正确指导。
The displacement of soil influences soil pressure acting on retaining structure greatly. Therefore, the mechanical analysis considering deformation is put forward. The soil pressure expressions considering displacement are adopted if displacement ranging between 0 and ultimate magnitude, while the soil pressure expressions considering sliding surface are adopted for outside the ultimate displacement. The displacement making soil achieve to ultimate state can be obtained ＂by former researchers. The results of soil pressure expressions are identical with the results of centrifugal model experiment and finite element method. The consistency attests to the rationality of expressions. In addition, the soil pressure calculation formula can be applied to practical case and guided for construction perfectly.
出处
《工业建筑》
CSCD
北大核心
2007年第7期53-57,共5页
Industrial Construction
基金
江苏省建筑业科研资助项目(JG2005-19)
教育部科学技术研究重点资助项目(205058)
关键词
挡土结构
土压力
位移
滑动面
极限状态
retaining structure earth pressure displacement sliding surface ultimate state
