基于ABAQUS预测某深基坑支护结构变形及其加固措施

Deformation Forecast of Supporting Structure in Deep Foundation Pit Based on ABAQUS and Control Measures

结合某深基坑工程实例,采用ABAQUS对基坑变形进行模拟分析及预测。对开挖后基坑局部出现位移超过了报警值、水平位移持续增加的险情,通过分析基坑围护结构变形监测信息和工程条件动态变化特征,不断修正有限元模拟条件,分步对变形进行模拟分析及预测。将其结果与实际监测数据进行分析比较,用以指导该基坑的动态施工,针对险情采取相应加固措施,取得了较好效果。

Based on the example of deep foundation pit engineering, the deformation forecast of supporting structure based on ABAQUS is introduced. The regional deformation exceeds the waming value after excavation, and horizontal deformation continues to increase. The condition of finite element simulation is adjusted by analyzing the monitoring information and engineering condition. The deformation of foundation pit for different work conditions is simulated, analyzed and forecasted, and contrastive analysis between analogue results and monitoring data of foundation pit is made, then relevant treatments are suggested to guide engineering practice.