【摘要】 在平面应变条件下,对土钉支护的基坑进行了有限元数值模拟,在此基础上采用有限元稳定分析方法评价基坑的稳定性。研究了土钉拉力及基坑变形的变化规律,土钉长度及布置方式变化对基坑变形和稳定性的影响。结果表明,当土钉足够长时,基坑的潜在滑动面与最大拉力作用点连线位置通常是一致的。更多还原

【Abstract】 Under the condition of plane strain,a 2D elastoplastic FEM is used to analyze the behavior of a soil nailing support for deep foundation pit;and stability method based on slip surface FE stress is applied to evaluate the stability of the soil-nailed wall.The variations of tensile force of soil nails and deformation of foundation pit are studied.The influence of different lengths and layouts of soil nails on stability and deformation of foundation pit is also analyzed.The result indicates that the potential slip surface of foundation pit is consistent with the position of maximal tensile force when the soil nails are long enough.更多还原