Study on the Construction Technology of SMW Method Piles Combined with Anchors for Deep Foundation Pit Support in Soft Soil Areas
Support construction is an essential part of deep foundation pit engineering,and its quality directly affects the safety and stability of the foundation pit.In soft soil areas,the complexity of deep foundation pit support construction is significantly higher.Based on these challenges,a construction technology combining SMW(Soil Mixing Wall)method piles with anchors was proposed for deep foundation pits in soft soil areas.SMW method piles were designed according to the actual conditions of the foundation pit,and enclosure construction based on SMW method piles was carried out.Support construction was completed through anchor grouting,finalizing the combined support method.Results indicate that,after construction,the safety factors for anti-overturning stability of support components exceeded 1.6,and those for anti-uplift stability of surrounding rock exceeded 2.0,both higher than the minimum specified values and meeting relevant code requirements.The support effectiveness was satisfactory.