振冲技术在洋山港区地基处理工程中的试验与应用

The Application of the Vibration Technology in the Foundation Engineering of the Yangshan Port Area

洋山一期陆域工程深厚吹填砂区为粉细砂陆域,一般工程性质较差,必须采用适当的加固措施进行处理。介绍了对几种地基处理方案的比选,提出采用振冲法。较详细阐述了振冲法在洋山港区地基处理工程中的试验和应用,并通过表层沉降观测数据表明,效果很好。最后得出洋山港大面积深厚粉细砂无填料振冲法地基处理成功的结论,可为同类工程借鉴。

The refilling land engineering of the Yangshan Port Area （ Phase 1 ） are the thick fine sand with silt layer, the characteristic of which is worse, so it has to be consolidated with suitable measures. This paper compares several plans of foundation treat and has chosen the application of the vibration method in the foundation treat of the Yangshan Port Area, which has got good results according to the observation data of the surface sedimentation. It has got a conclusion that the vibration method without filling material for the foundation treat of large thick silt layer is successful, which could be referenced by the same engineering.