【摘要】 在深基坑开挖时,由于地层参数的不确定性和复杂性以及建立地层本构模型时的种种简化,土层与各种支护结构的实际变形特征与设计阶段的理论变形特征往往有较大差距。鉴于此,把FLAC3D三维数值模拟程序和北京市地铁奥运支线深基坑工程中不断补充的现场实际监测数据结合起来,通过不断修正所建模型,使预测模型更符合后续开挖时的实际情况,使预测结果更趋近于实际监测结果,显示了该方法进行深基坑变形预测的有效性。更多还原

【Abstract】 Due to the uncertainty and Complexity of the stratum parameters and the simplification of mechanical model,the actual deformation of the soil and the supporting structures obviously differs from the theoaretical deformation.So this article brings forward a new method to simulate the project ever and again.The dissertation is carried out against a background of a practical project in Beijing which is simulated with the aid of the large-scale software-FLAC3D combined with actual measured data.Its results indicate that the proposed model is effective for predicting the deformation of supporting structures for deep excavations.更多还原