摘要
在挡土墙绕墙底转动模式下,基于有限元方法建立了有限元计算模型,研究了位移量、填土内摩擦角、变形模量等对塑性区及土压力分布的影响,考虑内摩擦角逐步发挥的基础上,对计算土压力的经验公式进行改进,并将其计算结果与有限元结果进行比较。结果表明,采用改进的经验公式得到的非极限状态的计算结果与有限元结果整体一致,从而验证了改进经验公式的合理性。
Under the retaining wall rotating around the base,this paper establishes the finite element calculation model and studies the influence of displacement,internal friction angle and deformation modulus on the plastic zone and the earth pressure distribution.Considering the gradual development of the internal friction angle,we improved the empirical formula for calculating the earth pressure,and compared the calculation results with the finite element.It shows that the results of the non-limit state obtained by the improved empirical formula are in agreement with the finite element results,which verifies the rationality of the improved empirical formula.
出处
《水电能源科学》
北大核心
2017年第9期93-96,共4页
Water Resources and Power
关键词
挡土墙
有限元法
主动土压力
绕墙底转动模式
非极限状态
塑性区
retaining wall
finite element method
active earth pressure
rotation around the bottom of the wall
non-limit state
plastic zone
